CN103785361A - Method for preparing heavy metal ion absorbent through xanthation of granule sludge - Google Patents
Method for preparing heavy metal ion absorbent through xanthation of granule sludge Download PDFInfo
- Publication number
- CN103785361A CN103785361A CN201410077049.7A CN201410077049A CN103785361A CN 103785361 A CN103785361 A CN 103785361A CN 201410077049 A CN201410077049 A CN 201410077049A CN 103785361 A CN103785361 A CN 103785361A
- Authority
- CN
- China
- Prior art keywords
- sludge
- granule sludge
- heavy metal
- xanthogenation
- mud
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention belongs to the field of the wastewater treatment technology and waste reclamation, and relates to a method for preparing a heavy metal ion absorbent through xanthation of granule sludge, in particular to the method for preparing the absorbent through xanthation of discarded dried granule sludge of aerobic granular sludge, anaerobic granular sludge or sewage treatment plants to treat heavy metal wastewater. The method comprises steps of (1) fetching a certain mass of the granule sludge, and performing dewatering and grinding on the granule sludge; (2) adding 2.0mL-8.0mL of CS2 and 6-22% of NaOH solution into per gram of sludge, and stirring the mixture at the temperature of 10 DEG C- 40 DEG C; (3) performing centrifugation and removing liquid supernatant; (4) repeatedly washing sediment through deionized water until the neutral solution is obtained; (5) performing centrifugation for a second time and washing the sediment through acetone and diethyl ether; (6) drying the sediment at the room temperature for later use. The method is wide in raw material resource, simple in operation and economical and efficient, and serves as useful exploration on reclamation of the discarded sludge. When the prepared xanthation sludge is utilized to treat heavy metal wastewater, the removal rate is higher than 90 percent. Taking Cu2+ as a example, the largest adsorbing capacity of the xanthation sludge is 142.9mg.g-1 at the temperature of 25 DEG C when the pH is five, and therefore, the largest adsorbing capacity of the xanthation sludge is much higher than that of a majority of adsorbents.
Description
Technical field
The present invention relates to a kind of discarded granule sludge of xanthogenation modification sewage treatment plant of using, prepare the method for heavy metal absorbent, belong to wastewater treatment and waste reclamation field.
Background technology
Along with traditional industry popularizations such as mineral products, leather processing, chemical industry, five metals, plating, coals, and the rise of the industry such as electronics, battery, metal smelt, heavy metal pollution is day by day serious.Heavy metal can not decompose in environment, and recovery difficult is large, greatly endangers public health and the ecosystem.Traditional heavy metal pollution removal method has chemical precipitation, redox, electrochemical treatments, evaporation recovery, filtration, ion-exchange and membrane technology etc.But these method efficiency are low, adsorption capacity is limited and uneconomical.Absorption is the effective ways of processing heavy metal, in numerous adsorbents, xanthate class adsorbent is particularly efficient, because the sulfur-containing group in xanthate has very strong affinity to heavy metal, and its preparation is simple, economical, have highly insoluble and high stability, thereby is widely used.Many raw materials can be used for preparing xanthate, as wood chip, waste tobacco stalk, starch, Wheat Straw, waste tobacco, orange peel, shitosan, bentonite etc.Number of patent application 200710018213.7 is prepared adsorbent for heavy metal take sodium-ionized bentonite as raw material, to pb
2+, Cu2
+all there is larger adsorption capacity and higher clearance; 201210445733.7 of number of patent applications disclose a kind of preparation method of xanthogen macropore sephadex adsorbent, and its finished product xanthogen macropore sephadex is to pb
2+adsorption capacity at 302mgg
-1above, to Cd
2+adsorption capacity at 163.56mgg
-1above, to Cu
2+adsorption capacity at 86mgg
-1above; Number of patent application 200510126220.X produces xanthate take wood chip as raw material, to the clearance of heavy metal up to more than 95%.The key reaction of preparing xanthate is that the material of hydroxyl is used to CS in alkaline environment
2process, generate sulfur-containing group, shown in (1):
Activated sludge process is current one of sewage disposal technology the most widely.Gatheringization activated sludge---anaerobic grain sludge and aerobic particle mud due to their good settling properties, compared with strong stability, be widely used in the processing of organic poisonous wastewater, milk product waste, nitrogen phosphorus waste water, heavy metal wastewater thereby, waste water from dyestuff etc. compared with features such as high disposal abilities; In addition, the extensive application of method for biologically treating wastewater has also inevitably produced a large amount of excess sludges, and first these excess sludges all will carry out mummification in disposal, recycling process.Excess sludge water content after mummification is little, is generally graininess or bulk.The research of granule sludge Adsorption of Heavy Metals has report more.The people such as Xu (2011) find that anaerobic grain is to Cr
6+there is good absorption property; Xu Hongying etc. (2009) utilize the Hg in anaerobic grain sludge absorption waste water
2+, adsorbance reaches 64.64mgg
-1; Jiang Meng etc. (2013) have reported that aerobic particle mud is to pb
2+, Cu
2+, Cd
2+single adsorption and competitive Adsorption; Li Shu etc. (2013) are by Ca (OH)
2calcification aerobic particle mud, to pb
2+, Cu
2+, Cd
2+adsorption capacity be respectively 173.3mgg
-1, 58.39mgg
-1and 168.9mgg
-1.But as very limited to the adsorbance of heavy metal in the granule sludge after above-mentioned direct application or simple calcification.The main component of these graininess mud such as the excess sludge after anaerobic grain sludge, aerobic particle mud and mummification is all the organisms such as cell, contain a large amount of protein, fat and cellulose, therefore be rich in hydroxyl, can be used as the substrate of preparing xanthate class adsorbent for heavy metal, but have no at present relevant report.
Summary of the invention
The present invention be directed to current heavy metal polluted waste water difficult treatment, the present situation such as existing adsorbent is expensive, adsorption capacity is low, provides a kind of heavy metal absorbent preparation method of simple, economical and efficient.By xanthogenation by granule sludge modification, make the heavy metal xanthate class adsorbent of high-adsorption-capacity.
By granule sludge modification, make the method for heavy metal absorbent, comprise following processing step:
A, aerobic particle mud or anaerobic grain sludge are taken out from reactor, with deionized water rinse 3 times, the 12～24h that dewaters at 60 ℃～100 ℃ temperature, after dehydration, sludge moisture content is 1%～20%; Or get a certain amount of waste water treatment plant's mummification waste sludge (water content is 1%～15%).Above-mentioned mud is carried out to milling to a certain degree, and after milling, particle diameter is 800～2000 μ m;
B, in the granule sludge described in every gram of a, add 2.0～8.0mL carbon disulfide (CS
2) and the mass concentration NaOH solution that is 6～22%, in 10 ℃～40 ℃, 100～150rmin
-1under mixing speed, react 6～24h;
C, at room temperature 5000～6500rmin of solution that step b is obtained
-1centrifugal 5～20min, removes supernatant, repeatedly rinses precipitation by deionized water, until solution becomes neutrality;
D, the solution centrifugal collection again that above-mentioned steps c is obtained, centrifugal rotational speed is 5000～6500rmin
-1, removing supernatant after centrifugal, gained mud rinses with acetone and ether;
After e, filtration drying, obtain xanthogenation granule sludge.
The xanthogenation granule sludge of preparing in the present invention adopts Fourier transform infrared absorption spectroscopy to characterize, and result shows xanthogenation success.As shown in Fig. 1 in accompanying drawing.
In primary sludge, 3420cm
-1the absworption peak at place is produced by O-H stretching vibration, because macromolecular compound exists in molecule and intermolecular hydrogen bonding, illustrates on primary sludge and has " freedom " hydroxyl.2924cm
-1the absworption peak at place is produced by C-H symmetry and asymmetric stretching vibration, and this may be caused by contained methylene of material such as polysaccharide in primary sludge.In addition, mud is at 1650cm
-1and 1542cm
-1there are absworption peak, 1660～1630cm in place
-1with 1550～1520cm
-1be respectively acid amides I band and acid amides II band.Acid amides I band is carbonyl (C=O) stretching vibration district, the combination that acid amides II band is C-N stretching vibration and N-H deformation vibration, and this may be that the contained proteins and peptides class of mud material itself produces.1455cm
-1the absworption peak at place is the flexural vibrations peak that the contained C-H of methyl and methylene produces.1403cm
-1place is O-H in-plane bending vibration peak.1238cm
-1, 1033cm
-1the absworption peak at place is caused by C-O stretching vibration, has further verified the existence of primary sludge surface hydroxyl, has proved the feasibility of xanthogenation.
In xanthogenation granule sludge, 1455cm
-1and 1403cm
-1locate two peaks and disappear, and at 1421cm
-1occur a new absworption peak, this may be O-H and CS
2and the peak of the interior sex change generation of vibration of the rear C-H face of NaOH reaction.In addition, xanthogenation mud is at 674cm
-1there is weak absworption peak left and right, is to be caused by C-S vibration, shows modification success.1033cm
-1place's absworption peak broadens, and may be C-S-S symmetrical stretching vibration peak and merge herein at the stretching vibration peak of C-O.
With the xanthogenation granule sludge treatment of simulated heavy metal wastewater thereby making, measure the concentration of heavy metal before and after processing, calculate clearance and adsorbance.
Adsorption capacity q
tcalculate and see formula (2), (3) with clearance:
q
t=(c
o-c
t)V/m (2)
Clearance=(c
o-c
t)/c
o(3)
In formula, q
tfor the adsorption capacity in t moment, mgg
-1; c
oand c
tbe respectively heavy metal ion initial concentration and the concentration in t moment, mgL
-1; V is the volume of solution, mL; M is the quality of adsorbent, g.
The present invention has the following advantages than prior art:
A, feed particles mud wide material sources of the present invention, simple to operate, economical quick.
B, using the discarded dewatered sludge in biological wastewater treatment process when preparing the raw material of xanthate, not only make heavy metal absorbent, simultaneously by its resource, solved waste sludge and processed the difficult problem of disposing.
The granule sludge xanthate of preparing in b, the present invention is by effect Adsorption of Heavy Metal Ions such as complexing, ion-exchange, electrostatic attraction and reduction-precipitations, heavy metal ion is had to very strong adsorption capacity, under very little solid-to-liquid ratio, can obtain good clearance and higher adsorption capacity.With Cu
2+for example, must be at 25 ℃ by Langmuir models fitting, when pH=5, the discarded mummification granule sludge of xanthogenation is 142.9mgg to its maximal absorptive capacity
-1(R
2=0.96), far above existing most adsorbents.
Accompanying drawing explanation
Fig. 1 is the Fourier transform infrared absorpting light spectra (FTIR) of mud before and after modification." 1. " represent primary sludge, " 2. " represents xanthogenation granule sludge.
Fig. 2 is the impact of heavy metal initial concentration on xanthogenation granule sludge absorption property." ■-" represents adsorption capacity, " ▲-" expression clearance.
Fig. 3 is the impact of pH value on xanthogenation granule sludge absorption property
The specific embodiment
The specific embodiment one: prepare xanthate with granule sludge and comprise following processing step:
A, aerobic particle mud or anaerobic grain sludge are taken out from reactor, with deionized water rinse 3 times, tiling, is placed in baking oven, the 12～24h that dewaters at 60 ℃～100 ℃ temperature, and after dehydration, sludge moisture content is 1%～20%; Or get a certain amount of waste water treatment plant's mummification waste sludge (water content is 1%～15%).Above-mentioned mud is carried out to milling to a certain degree, and after milling, particle diameter is 800～2000 μ rn;
B, in every gram of granule sludge, add 2.0～8.0mL carbon disulfide (CS
2) and the mass concentration NaOH solution that is 6～22%, at 10 ℃～40 ℃, 100～150rmin
-1lower reaction 6～24h;
C, at room temperature 5000～6500rmin of solution that step b is obtained
-1centrifugal 5～20min, removes supernatant, repeatedly rinses precipitation by deionized water, until solution becomes neutrality;
D, the solution centrifugal collection again that above-mentioned steps c is obtained, centrifugal rotational speed is 5000～6500rmin
-1, removing supernatant after centrifugal, gained mud rinses with acetone and ether;
After e, filtration drying, obtain xanthogenation granule sludge.
The specific embodiment two: the concrete steps of utilizing xanthogenation granule sludge prepared by the present invention to process heavy metal polluted waste water are:
A, get heavy metal polluted waste water and regulated its pH;
B, take solid-to-liquid ratio as 1: 750-1: 150 add xanthogenation granule sludge in waste water;
C, the hybrid reaction of vibrating under 25 ℃～35 ℃ conditions;
E, at specific point in time sampling, water sample is measured its content of beary metal after crossing the filter membrane of 0.22 μ m.
Aerobic particle mud or anaerobic grain sludge are taken out from reactor, with deionized water rinse 3 times, the 20h that dewaters at 80 ℃, mills, original aerobic particle mud (pristine aerobic granular sludge after must dewatering, PAEGS, average grain diameter is 858.2 μ m, water content 5.7%) and original anaerobic grain sludge (pristine anaerobic granular sludge, PANGS, average grain diameter is 862.9 μ m, water content 6.4%); Discarded sewage treatment plant dewatered sludge is milled, obtain original discarded mummification granule sludge (pristine wasted granular sludge, PWGS, average grain diameter 931.4 μ m, water content 2.8%).Get PAEGS, PANGS, the each 10g of PWGS, add respectively 40mLCS
2with the 50mL mass concentration NaOH solution that is 14%, 100rmin at 10 ℃
-1stir 24h; At room temperature 5000rmin of gained solution
-1centrifugal 10min, removes supernatant, repeatedly rinses precipitation by deionized water, until solution becomes neutrality; Under room temperature again with 5000rmin
-1the centrifugal 10min of rotating speed, removes supernatant, and the precipitation obtaining is rinsed with acetone and ether; To precipitate at room temperature dry, obtain respectively xanthogenation aerobic particle mud (xanthated aerobic granular sludge, XAEGS), xanthogenation anaerobic grain sludge (xanthated anaerobic granular sludge, and the discarded mummification granule sludge (xanthated wasted granular sludge, XWGS) of xanthogenation XANGS).With above-mentioned 3 kinds of primary sludges (PAEGS, PANGS, PWGS) and 3 kinds of xanthogenation mud (XAEGS, XANGS, XWGS) processing Cu
2+initial concentration is 25mgL
-1, 50mgL
-1, 100mgL
-1simulated wastewater, solid-to-liquid ratio is 1: 750, pH is adjusted to 5, reaction 3h, Cu before and after assaying reaction
2+concentration, Cu
2+clearance is as shown in table 1.
Granule sludge absorption property comparison before and after table 1 xanthogenation
Visible, after xanthogenation, the Cu that granule sludge is right
2+clearance have the lifting of 22.05%-47.72%.
This embodiment is with embodiment 1 difference: using 3 kinds of xanthogenation mud (XAEGS, XANGS, XWGS) processing initial concentration making is 25mgL
-1zn
2+, Ni
2+, Pb
2+, Cd
2+, Cu
2+simulated wastewater, solid-to-liquid ratio is 1: 750, pH is adjusted to 5～6, reaction 3h, concentration of heavy metal ion before and after assaying reaction, clearance is as shown in table 2
The clearance of table 2 xanthogenation mud to different heavy metal ion
Get the discarded mummification granule sludge of 10g, mill, obtain the granule sludge that average grain diameter is about 1008.9 μ m.Add respectively 20,50,80mL CS
2with the 50mL mass concentration NaOH solution that is 14%, 120rmin at 10 ℃
-1stir 24h; At room temperature 5500rmin of the solution obtaining
-1centrifugal 10min, removes supernatant, repeatedly rinses precipitation by deionized water, until solution becomes neutrality; Under room temperature again with 5500rmin
-1centrifugal 10min, removes supernatant, and the precipitation obtaining is rinsed with acetone and ether; To precipitate at room temperature and be dried, obtain the discarded mummification granule sludge of xanthogenation.With the discarded mummification granule sludge processing of the xanthogenation making Cu
2+initial concentration is 25mgL
-1simulated wastewater, solid-to-liquid ratio is 1: 750, pH is adjusted to 5, reaction 3h, Cu before and after assaying reaction
2+concentration, Cu
2+clearance is 95%-97%.
Get the discarded mummification granule sludge of 10g, mill, obtain the granule sludge that average grain diameter is about 1012.4 μ m.Add respectively 40mL CS
2be respectively 6%, 14%, 22% NaOH solution with 50mL mass concentration, 100rmin at 10 ℃
-1stir 24h; At room temperature 5000rmin of the solution obtaining
-1centrifugal 15min, removes supernatant, repeatedly rinses precipitation by deionized water, until solution becomes neutrality; Under room temperature again with 5000rmin
-1the centrifugal 15min of rotating speed, removes supernatant, and the precipitation obtaining is rinsed with acetone and ether; To precipitate at room temperature and be dried, obtain the discarded mummification granule sludge of xanthogenation.With the discarded mummification granule sludge processing of the xanthogenation making Cu
2+initial concentration is 25mgL
-1simulated wastewater, solid-to-liquid ratio is 1: 650, pH is adjusted to 5, reaction 3h, Cu before and after assaying reaction
2+concentration, Cu
2+clearance is 94%-97%.
Get the discarded mummification granule sludge of 10g, mill, obtain the granule sludge that average grain diameter is about 999.4 μ m.Add 40mLCS
2with the 50mL mass concentration NaOH solution that is 14%, respectively at 150rmin at 10 ℃, 20 ℃, 30 ℃, 40 ℃
-1stir 18h; At room temperature 65000rmin of the solution obtaining
-1centrifugal 5min, removes supernatant, repeatedly rinses precipitation by deionized water, until solution becomes neutrality; Under room temperature again with 6500rmin
-1the centrifugal 5min of rotating speed, removes supernatant, and the precipitation obtaining is rinsed with acetone and ether; To precipitate at room temperature and be dried, obtain the discarded mummification granule sludge of xanthogenation.With the discarded mummification granule sludge processing of the xanthogenation making Cu
2+initial concentration is 25mgL
-1simulated wastewater, solid-to-liquid ratio is 1: 550, pH is adjusted to 5, reaction 3h, Cu before and after assaying reaction
2+concentration, Cu
2+clearance is 92%-98%.
Embodiment 6
Get the discarded mummification granule sludge of 10g, mill, obtain the granule sludge that average grain diameter is about 1007.8 μ m.Add 40mLCS
2with 50mL mass concentration be 14% NaOH solution, 100rmin at 10 ℃
-1stir respectively 6h, 15h, 24h; At room temperature 5800rmin of the solution obtaining
-1centrifugal 10min, removes supernatant, repeatedly rinses precipitation by deionized water, until solution becomes neutrality; Under room temperature again with 5800rmin
-1the centrifugal 10min of rotating speed, removes supernatant, and the precipitation obtaining is rinsed with acetone and ether; To precipitate at room temperature and be dried, obtain the discarded mummification granule sludge of xanthogenation.With the discarded mummification granule sludge processing of the xanthogenation making Cu
2+initial concentration is 25mgL
-1simulated wastewater, solid-to-liquid ratio is 1: 450, pH is adjusted to 5, reaction 3h, Cu before and after assaying reaction
2+concentration, Cu
2+clearance is 95-97%.
Embodiment 7
Get the discarded mummification granule sludge of 10g, mill, obtain the granule sludge that average grain diameter is about 1450.8 μ m.Add 40mLCS
2with the mass concentration NaOH solution that is 50mL14%, 150rmin at 10 ℃
-1stir 24h; At room temperature 5500rmin of the solution obtaining
-1centrifugal 20min, removes supernatant, repeatedly rinses precipitation by deionized water, until solution becomes neutrality; Under room temperature again with 5500rmin
-1the centrifugal 20min of rotating speed, removes supernatant, and the precipitation obtaining is rinsed with acetone and ether; To precipitate at room temperature and be dried, obtain the discarded mummification granule sludge of xanthogenation.With the discarded mummification granule sludge processing of the xanthogenation making Cu
2+initial concentration is 20mgL
-1～250mgL
-1simulated wastewater, solid-to-liquid ratio is 1: 750, pH is adjusted to 5, reaction 1.5h, Cu before and after assaying reaction
2+concentration, clearance and adsorption capacity are with initial concentration variation tendency as shown in Figure 2.Clearance rises and declines with initial concentration, and maximum material removal rate is 95.5%; Adsorbance rises with initial concentration, and maximal absorptive capacity is 103.7mgg
-1.
Embodiment 8
This embodiment is with embodiment 7 differences: with the discarded mummification granule sludge processing of the xanthogenation making Cu
2+initial concentration is 25mgL
-1simulated wastewater, solid-to-liquid ratio is 1: 750, pH is adjusted to 1～5, reaction 1.5h, Cu before and after assaying reaction
2+concentration, clearance with pH variation tendency as shown in Figure 3.PH is larger, and clearance is higher.
Claims (6)
1. a method of being prepared by granule sludge xanthogenation to heavy metal absorbent, comprises the following steps:
(1) get granule sludge, carry out milling to a certain degree;
(2) in the granule sludge every gram of step (1) Suo Shu, add 2.0～8.0mL carbon disulfide (CS
2) and the mass concentration NaOH solution that is 6～22%, in 10 ℃～40 ℃, 100～150rmin
-1under mixing speed, react 6～24h;
(3) centrifugal collection step (2) mud after treatment, and repeatedly rinse by deionized water, make it to neutrality;
(4) centrifugal collection above-mentioned steps (3) mud after treatment again, and it is rinsed with acetone and ether;
(5) dry to step (4) mud solution filter after treatment, obtain xanthogenation granule sludge.
2. a kind of method of being prepared by granule sludge xanthogenation to heavy metal absorbent according to claim 1, is characterized in that forming particle or block mud after described granule sludge comprises anaerobic grain sludge, aerobic particle mud and the dehydration of discarded excess sludge.
3. a kind of method of being prepared by granule sludge xanthogenation to heavy metal absorbent according to claim 1, if it is characterized in that, granule sludge is anaerobic grain sludge or aerobic particle mud, first with washed with de-ionized water for several times, drying and dehydrating 12-24h at then 60 ℃～100 ℃; The moisture percentage in sewage sludge obtaining is 1%～20%.
4. a kind of method of being prepared by granule sludge xanthogenation to heavy metal absorbent according to claim 1, is characterized in that the granularity after step (1) mud is milled is 800～2000 μ m.
5. a kind of method of being prepared by granule sludge xanthogenation to heavy metal absorbent according to claim 1, is characterized in that the centrifugal collection condition of mud in step (2) and step (3) is 5000～6500rmin
-1, centrifugal 5～20min.
6. right to use requires the prepared xanthogenation granule sludge of 1 method to process heavy metal wastewater thereby, comprises the following steps:
(1) get heavy metal polluted waste water and regulate its pH;
(2) take solid-to-liquid ratio as 1: 750-1: 150 add xanthogenation granule sludge in waste water;
(3) hybrid reaction of vibrating under 25 ℃～35 ℃ conditions;
(4), at specific point in time sampling, water sample is measured its content of beary metal after crossing the filter membrane of 0.22 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410077049.7A CN103785361A (en) | 2014-03-05 | 2014-03-05 | Method for preparing heavy metal ion absorbent through xanthation of granule sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410077049.7A CN103785361A (en) | 2014-03-05 | 2014-03-05 | Method for preparing heavy metal ion absorbent through xanthation of granule sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103785361A true CN103785361A (en) | 2014-05-14 |
Family
ID=50661667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410077049.7A Pending CN103785361A (en) | 2014-03-05 | 2014-03-05 | Method for preparing heavy metal ion absorbent through xanthation of granule sludge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103785361A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104528870A (en) * | 2015-01-01 | 2015-04-22 | 北京工业大学 | Method for treating dyeing waste water by utilizing inactive expanded sludge |
| CN109603770A (en) * | 2019-01-08 | 2019-04-12 | 王彩君 | A kind of organic dye adsorbent namely preparation method and system |
| CN111195513A (en) * | 2020-02-14 | 2020-05-26 | 兰州交通大学 | Preparation method of dithio-carboxylated straw, product and application of product as heavy metal adsorbent |
| CN115121218A (en) * | 2022-06-20 | 2022-09-30 | 东莞城市学院 | Preparation of adsorbed pb 2+ Method for modifying ceramsite by sludge base |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3979286A (en) * | 1974-10-16 | 1976-09-07 | The United States Of America As Represented By The Secretary Of Agriculture | Removal of heavy metal ions from aqueous solutions with insoluble cross-linked-starch-xanthates |
| CN101081359A (en) * | 2007-06-21 | 2007-12-05 | 西北师范大学 | Xanthation bentonite absorbingsubstance and method for preparing the same |
| CN102463104A (en) * | 2010-11-19 | 2012-05-23 | 王永斌 | Clay-based xanthogenate, and preparation method and application thereof |
| CN103071461A (en) * | 2013-02-26 | 2013-05-01 | 西北师范大学 | Preparation of xanthated loess adsorbent and application of xanthated loess adsorbent to waste water treatment |
-
2014
- 2014-03-05 CN CN201410077049.7A patent/CN103785361A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3979286A (en) * | 1974-10-16 | 1976-09-07 | The United States Of America As Represented By The Secretary Of Agriculture | Removal of heavy metal ions from aqueous solutions with insoluble cross-linked-starch-xanthates |
| CN101081359A (en) * | 2007-06-21 | 2007-12-05 | 西北师范大学 | Xanthation bentonite absorbingsubstance and method for preparing the same |
| CN102463104A (en) * | 2010-11-19 | 2012-05-23 | 王永斌 | Clay-based xanthogenate, and preparation method and application thereof |
| CN103071461A (en) * | 2013-02-26 | 2013-05-01 | 西北师范大学 | Preparation of xanthated loess adsorbent and application of xanthated loess adsorbent to waste water treatment |
Non-Patent Citations (2)
| Title |
|---|
| SUJOY K. DAS 等: ""Adsorption Behavior of Mercury on Functionalized Aspergillus versicolor Mycelia: Atomic Force Microscopic Study"", 《LANGMUIR》 * |
| 沈祥信等: ""活性污泥吸附重金属离子的研究进展"", 《工业用水与废水》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104528870A (en) * | 2015-01-01 | 2015-04-22 | 北京工业大学 | Method for treating dyeing waste water by utilizing inactive expanded sludge |
| CN104528870B (en) * | 2015-01-01 | 2016-06-01 | 北京工业大学 | A kind of method of expansion sludge treatment waste water from dyestuff utilizing inactivation |
| CN109603770A (en) * | 2019-01-08 | 2019-04-12 | 王彩君 | A kind of organic dye adsorbent namely preparation method and system |
| CN111195513A (en) * | 2020-02-14 | 2020-05-26 | 兰州交通大学 | Preparation method of dithio-carboxylated straw, product and application of product as heavy metal adsorbent |
| CN115121218A (en) * | 2022-06-20 | 2022-09-30 | 东莞城市学院 | Preparation of adsorbed pb 2+ Method for modifying ceramsite by sludge base |
| CN115121218B (en) * | 2022-06-20 | 2024-04-19 | 东莞城市学院 | Preparation of adsorption pb2+Method for modifying ceramsite by sludge base |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Pehlivan et al. | Equilibrium isotherm studies for the uptake of cadmium and lead ions onto sugar beet pulp | |
| Kalyani et al. | Removal of copper and nickel from aqueous solutions using chitosan coated on perlite as biosorbent | |
| CN102553538B (en) | Modified peanut shell cationic adsorbent, preparation method and application | |
| CN105536715A (en) | Method for preparation of adsorption material by using maple leaf | |
| CN102247814A (en) | Biomass adsorbent for treatment of heavy metal wastewater and treatment method of heavy metal wastewater | |
| CN109647353B (en) | Heavy metal sewage composite treating agent and preparation method and application thereof | |
| CN108325506A (en) | A kind of preparation method of the modified cellulose aeroge of absorption heavy metal | |
| Pan et al. | Biosorption of Cd, Cu, Pb, and Zn from aqueous solutions by the fruiting bodies of jelly fungi (Tremella fuciformis and Auricularia polytricha) | |
| Anantha et al. | An evaluation of the major factors influencing the removal of copper ions using the egg shell (Dromaius novaehollandiae): chitosan (Agaricus bisporus) composite | |
| Alengebawy et al. | Advanced pre-treatment of stripped biogas slurry by polyaluminum chloride coagulation and biochar adsorption coupled with ceramic membrane filtration | |
| CN103785361A (en) | Method for preparing heavy metal ion absorbent through xanthation of granule sludge | |
| Guo et al. | Effect of alkali treatment of wheat straw on adsorption of Cu (II) under acidic condition | |
| CN102908998B (en) | Preparation method of xanthate macro-pore dextrangel adsorbent | |
| CN103977773A (en) | Preparation method and application of eichhornia crassipes cellulose xanthate calcium salt | |
| Cardoso et al. | Evaluation of metal affinity of Ag+, Cd 2+, Cr 3+, Cu 2+, Ni 2+, Zn 2+ and Pb 2+ in residue of double alginate extraction from Sargassum filipendula seaweed | |
| CN105381787A (en) | New environmentally friendly adsorbent material and preparation process thereof | |
| CN102423695B (en) | Straw cellulose-polyhydroxyaluminium salt phosphorus removal adsorbent capable of completely being degraded, and manufacturing method thereof | |
| CN103301811A (en) | preparation method of biomass charcoal adsorbent and method for treating oily wastewater by biomass charcoal adsorbent | |
| CN102974319A (en) | Drinking water cleaning agent with arsenic-removal function and preparation method thereof | |
| CN104190375A (en) | Biomass absorbing agent for treating rose-bengal dyeing wastewater as well as preparation method and application of biomass absorbing agent | |
| CN106316050A (en) | Method for improving dryness of biomass sludge | |
| CN103816873B (en) | Application corn stigma is as the method for biomass adsorbent process lead waste water | |
| CN107265552B (en) | The method of Cr VI in magnetic cellulose/polyglutamic acid coupling material removal waste water | |
| Yang et al. | The preparation of a cross-linked cerium (III)-loaded alginate bead adsorbent for the removal of phosphate from wastewater | |
| CN105521768A (en) | Drinking water purifying agent with arsenic removing function and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140514 |