CN106000334A - Modified reed biomass charcoal and preparing method and application thereof - Google Patents

Modified reed biomass charcoal and preparing method and application thereof Download PDF

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Publication number
CN106000334A
CN106000334A CN201610315913.1A CN201610315913A CN106000334A CN 106000334 A CN106000334 A CN 106000334A CN 201610315913 A CN201610315913 A CN 201610315913A CN 106000334 A CN106000334 A CN 106000334A
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phragmites communis
biomass carbon
modified
preparation
powder
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程丽华
龚宇鹏
倪智毅
徐新华
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Zhejiang University ZJU
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Zhejiang University ZJU
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2220/00—Aspects relating to sorbent materials
    • B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
    • B01J2220/48—Sorbents characterised by the starting material used for their preparation
    • B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
    • B01J2220/4825—Polysaccharides or cellulose materials, e.g. starch, chitin, sawdust, wood, straw, cotton
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/105—Phosphorus compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia

Abstract

The invention discloses a preparing method of modified reed biomass charcoal. The preparing method comprises the specific steps that reed straw is naturally air dried, ground and screened, and reed powder is obtained; a MgCl2 solution and the reed powder are mixed, the mixture is dried and then subjected to pyrolysis carbonization, aftertreatment is carried out, and then the modified reed biomass charcoal is obtained, wherein the concentration of the MgCl2 solution ranges from 0.5 mol/L to 0.75 mol/L, and the mass volume ratio of the reed powder to the MgCl2 solution is 0.1 g/mL. According to the preparing method, adopted raw materials are wide in source, the technology is simple, and the obtained modified reed biomass charcoal is large in specific surface area and capable of simultaneously and efficiently removing nitrogen and phosphor in water, and has the advantages of being environmentally friendly, high in treatment efficiency, economical, practical and the like.

Description

A kind of modified phragmites communis biomass carbon and its preparation method and application
Technical field
The present invention relates to water and pollute process field, be specifically related to a kind of modified phragmites communis biomass carbon and system thereof Preparation Method and application.
Background technology
At present, river, the whole world, lake all suffer from body eutrophication in various degree and threaten, mainly Be due to scale agricultural and commercial production cause the elements such as substantial amounts of nitrogen, phosphorus be drained into flow velocity slowly, In the surface water body of update cycle length, cause the aquatiles such as algae flourish in large quantities, destroy Aquatic ecological balances.Serious body eutrophication can cause wawter bloom phenomenon, and mainly showing as swims plants Thing amount reproduction, dissolved oxygen declines, Fish mortality, and water body blackout is smelly then.
Absorption method is the common technology during water pollution processes, and common sorbent material includes zeolite, oxygen Change aluminum, activated carbon etc..Biomass carbon is also commonly used at water pollution as a kind of novel adsorbing material Reason field, has reported the adsorption applications of nitrogen in water or phosphorus.Sarkhot etc. (Sarkhot DV, Ghezzehei TA,Berhe AA.Effectiveness of biochar for sorption of ammonium and phosphate from dairy effluent[J].Journal of environmental quality,2013, 42 (5): 1545-1554) with mixing wood shavings be raw material prepare biomass carbon to cattle farm feces give up Ammonia nitrogen in water processes, under the conditions of initial waste ammonia nitrogen concentration is 800mg/L, maximum single Position adsorbance only has 5.30mg/g.(Jung KW, Hwang MJ, Ahn KH, the et al.. such as Jung Kinetic study on phosphate removal from aqueous solution by biochar derived from peanut shell as renewable adsorptive media[J].International Journal of Environmental Science and Technology, 2015,12 (10): 3363-3372) it is respectively adopted Biomass carbon prepared by the different materials such as Pericarppium arachidis hypogaeae, bamboo, Semen Maydis grit, soybean stalk, Quercus acutissima Carr. processes Initial concentration is the KH of 5.0mg/L2PO4Solution, finds that Pericarppium arachidis hypogaeae is best to the adsorption effect of phosphorus, But unit adsorbance also only has 3.80mg/g.Visible, use biomass carbon adsorbed water body nitrogen phosphorus universal There is adsorbance the highest, the problems such as adsorption of nitrogen phosphor contaminant is more single.
Phragmites communis has a large amount of underground rhizome system and the plant of intensive aerial tissues as a kind of, in growth Stage can significantly remove water body nitrogen phosphorus, degradation of organic substances, reduces environmental pollution.Pass through Reed With biomass carbon recycling, it is possible not only to remove the nitrogen P elements of phragmites communis enrichment, prevents it from rotting After secondary pollution, and prepared biomass carbon adsorbed water body nitrogen phosphorus simultaneously can be utilized, play The effect of double purification water quality.Research that biomass carbon carries out adsorbing also has been reported that to utilize phragmites communis to prepare, Such as Zeng Zheng etc. (the most towering. the biomass carbon of Water Ecological Recovery plant is prepared and to ammonia nitrogen, the absorption of phosphorus Effect [D]. Zhejiang University, 2013.) to use phragmites communis be that biomass carbon prepared by raw material, however, it was found that to ammonia The adsorption effect of nitrogen and phosphorus is unsatisfactory, even occurs negative adsorption.Therefore, it is necessary to biomass carbon It is modified processing, improves its adsorbance to nitrogen phosphorus.
Research before shows, chemical modification can be effectively improved the biomass carbon absorption property to phosphorus.As The Chinese patent literature of Publication No. CN105170091A discloses a kind of ferrum modification phragmites communis biological The preparation of charcoal and the application in Removal of Phosphorus in Wastewater thereof.The preparation process of ferrum modification phragmites communis charcoal For: reed straw is carried out pretreatment；Pretreated phragmites communis is carried out pyrolysis charring；By pyrolytic carbon Change the charcoal obtained and be cooled to room temperature, ground 10～50 mesh sieves, clean for several times with water, remove table Face ash, dry for standby；Take FeCl3Soluble in water, add the charcoal stirring and evenly mixing dried, protect Holding ferrum charcoal mass ratio is 0.56～1:1；It is placed in baking oven and at a temperature of 85～105 DEG C, moisture is evaporated, Reheating processes 2h；Taking-up washes with water to neutrality, dries 6～12h, obtains ferrum modification phragmites communis charcoal Finished product.Use this ferrum modification phragmites communis charcoal, be the solution containing phosphate of 2mg/L for initial concentration, Unit adsorbance is 1.54mg/g；Meanwhile, ferrum modified biomass charcoal easily separate out in water body ferrum from Son, causes centralized life to drink ferrum in surface water and exceeds standard (standard value: 0.3mg/L).
Therefore, develop the new modification mode for phragmites communis charcoal, and then acquisition has higher absorption The modified phragmites communis charcoal of amount is the focus of research at present.
Summary of the invention
The invention provides a kind of method utilizing magnesium chloride activation modification phragmites communis biomass carbon, raw material comes Source is extensive, technique is simple, and the modified phragmites communis biomass carbon specific surface area prepared is big, can be the highest Effect removes the ammonia nitrogen in water body, phosphorus, has the advantages such as environmental protection, treatment effeciency are high, economical and practical.
The preparation method of a kind of modified phragmites communis biomass carbon, comprises the following steps:
(1) reed straw grinds after natural air drying and sieves, and obtains phragmites communis powder；
(2) by MgCl2Solution mixes with phragmites communis powder, after drying, carries out pyrolysis charring, then Post-treated obtain described modified phragmites communis biomass carbon；
Described MgCl2The concentration of solution is 0.5～0.75mol/L, phragmites communis powder and MgCl2Solution Mass volume ratio is 0.1g/mL.
As preferably, in step (1), described reed straw crosses 40 mesh sieves after air-drying, grinding.
As preferably, in step (2), described pyrolysis charring is at N2Carrying out under atmosphere, temperature is 500～700 DEG C, the time is 1h, and heating rate is 10 DEG C/min.
As preferably, in step (2), described dry temperature is 80 DEG C.
As preferably, in step (2), described post processing includes washing, is dried and crosses 60 mesh sieves.
The invention also discloses the modified phragmites communis biomass carbon prepared according to above-mentioned method, and this changes Property the application in the actual eutrophication water processing phosphorous, nitrogen of the phragmites communis biomass carbon.
As preferably, described phosphorus derives from PO4 3-, nitrogen source is in NH4 +。
Compared with prior art, present invention have the advantage that
(1) present invention uses reed straw to be biomass carbon feedstock, belongs to Renewable resource, source Extensively, cheap, for reed sediment substrateization utilize provide a kind of environmental protection, side with low cost Method, purifies water for reed wetland and provides subsequent key technology.
(2) this method is by by phragmites communis powder and MgCl2Solution mixing carries out anaerobism pyrolysis after drying Carbonization, is converted into biomass carbon by the carbon in phragmites communis, effectively reduce phragmites communis natural degradation or Burning the greenhouse gas emission and atmospheric pollution brought, preparation method is simple, is suitable for industry large quantities of Amount produces.
(3) ion exchange capacity of modified phragmites communis biomass carbon prepared by the present invention increases, it is possible to effectively Exchange NH4-N；Its surface can load the PO in the oxide of Mg and hydroxylate, with water body4-P Precipitated by chemical reaction, to water body NH4-N and PO4The theoretical maximum unit adsorbance of-P is respectively Exceed 30mg/g and 100mg/g.Modified phragmites communis biomass carbon can be in actual eutrophication water Nitrogen phosphorus adsorb simultaneously, reach to improve the purpose of region water quality.Biomass carbon after adsorption of nitrogen phosphorus Precipitable on bed mud, it is to avoid secondary pollution, and provide nutrient matrix for follow-up reed planting.
Detailed description of the invention
With reed straw as raw material, prepare biomass by the regulation condition such as proportioning raw materials, pyrolytic process Charcoal, obtains the modified phragmites communis biomass carbon of a kind of effective removal water body nitrogen phosphorus.Implemented into one by following The step explanation present invention, but be not construed as limiting the invention.
Embodiment 1
By reed straw natural air drying, ground 40 mesh；Phragmites communis powder and 0.5 after pretreated The MgCl of mol/L2Solution mixing vibration 2h, phragmites communis powder and MgCl2The mass volume ratio of solution For 0.1g/mL；It is placed in baking oven after mixing vibration and under the conditions of 80 DEG C, moisture is evaporated；Then exist N2The lower 600 DEG C of pyrolysis charring 1h of atmosphere, heating rate is 10 DEG C/min.Gained biomass carbon steams Distilled water washing is dried the most afterwards and crosses 60 mesh sieves.The specific surface area of final products reaches 190.37m2/ g, Aperture 4.19nm.
Embodiment 2
By reed straw natural air drying, ground 40 mesh；Phragmites communis powder and 0.75 after pretreated The MgCl of mol/L2Solution mixing vibration 2h, phragmites communis powder and MgCl2The mass volume ratio of solution For 0.1g/mL；It is placed in baking oven after mixing vibration and under the conditions of 80 DEG C, moisture is evaporated；Then exist N2The lower 600 DEG C of pyrolysis charring 1h of atmosphere, heating rate is 10 DEG C/min.Gained biomass carbon steams Distilled water washing is dried the most afterwards and crosses 60 mesh sieves.The specific surface area of final products reaches 183.54m2/ g, Aperture 5.08nm.
Embodiment 3
By reed straw natural air drying, ground 40 mesh；Phragmites communis powder and 0.5 after pretreated The MgCl of mol/L2Solution mixing vibration 2h, phragmites communis powder and MgCl2The mass volume ratio of solution For 0.1g/mL；It is placed in baking oven after mixing vibration and under the conditions of 80 DEG C, moisture is evaporated；Then exist N2The lower 500 DEG C of pyrolysis charring 1h of atmosphere, heating rate is 10 DEG C/min.Gained biomass carbon steams Distilled water washing is dried the most afterwards and crosses 60 mesh sieves.The specific surface area of final products reaches 220.76m2/ g, Aperture 3.82nm.
Embodiment 4
By reed straw natural air drying, ground 40 mesh；Phragmites communis powder and 0.5 after pretreated The MgCl of mol/L2Solution mixing vibration 2h, phragmites communis powder and MgCl2The mass volume ratio of solution For 0.1g/mL；It is placed in baking oven after mixing vibration and under the conditions of 80 DEG C, moisture is evaporated；Then exist N2The lower 700 DEG C of pyrolysis charring 1h of atmosphere, heating rate is 10 DEG C/min.Gained biomass carbon steams Distilled water washing is dried the most afterwards and crosses 60 mesh sieves.The specific surface area of final products reaches 182.81m2/ g, Aperture 5.39nm.
Modified phragmites communis biomass carbon adsorption effect is with NH in adsorbed water body4-N and PO4The experiment of-P is Example.
Application examples 1
Weigh the phragmites communis biomass carbon sample of 0.1g embodiment 1 preparation, be placed in 150mL conical flask, Adding 50mL initial concentration is the NH of 5mg/L4-N solution, is placed in constant-temperature table, with 150 R/min, 30 DEG C of constant temperature oscillation 24h, after with 0.22 μm membrane filtration, filtrate uses salicylic acid Spectrophotometry NH4-N concentration, each sample is repeated 3 times.After testing, phragmites communis biomass Charcoal is to NH4The clearance of-N reaches 21.8%, and its unit adsorbance is 0.54mg/g.
Application examples 2
Weigh the phragmites communis biomass carbon sample of 0.1g embodiment 1 preparation, be placed in 150mL conical flask, Adding 50mL initial concentration is the NH of 20mg/L4-N solution, is placed in constant-temperature table, with 150 R/min, 30 DEG C of constant temperature oscillation 24h, after with 0.22 μm membrane filtration, filtrate uses salicylic acid Spectrophotometry NH4-N concentration, each sample is repeated 3 times.After testing, phragmites communis biomass Charcoal is to NH4The clearance of-N reaches 20.1%, and its unit adsorbance is 2.01mg/g.
Application examples 3
Weigh the phragmites communis biomass carbon sample of 0.1g embodiment 1 preparation, be placed in 150mL conical flask, Adding 50mL initial concentration is the NH of 50mg/L4-N solution, is placed in constant-temperature table, with 150 R/min, 30 DEG C of constant temperature oscillation 24h, after with 0.22 μm membrane filtration, filtrate uses salicylic acid Spectrophotometry NH4-N concentration, each sample is repeated 3 times.After testing, phragmites communis biomass Charcoal is to NH4The clearance of-N reaches 24.7%, and its unit adsorbance is 6.09mg/g.
Application examples 4
Weigh the phragmites communis biomass carbon sample of 0.05g embodiment 1 preparation, be placed in 150mL conical flask In, adding 50mL initial concentration is the PO of 25mg/L4-P solution, is placed in constant-temperature table, with 150r/min, 30 DEG C of constant temperature oscillation 24h, after with 0.22 μm membrane filtration, filtrate uses molybdenum Acid ammonium spectrophotometry PO4-P concentration, each sample is repeated 3 times.After testing, phragmites communis is biological Matter charcoal is to PO4The clearance of-P reaches 96.6%, and its unit adsorbance is 24.14mg/g.
Application examples 5
Weigh the phragmites communis biomass carbon sample of 0.05g embodiment 1 preparation, be placed in 150mL conical flask In, adding 50mL initial concentration is the PO of 50mg/L4-P solution, is placed in constant-temperature table, with 150r/min, 30 DEG C of constant temperature oscillation 24h, after with 0.22 μm membrane filtration, filtrate uses molybdenum Acid ammonium spectrophotometry PO4-P concentration, each sample is repeated 3 times.After testing, phragmites communis is biological Matter charcoal is to PO4The clearance of-P reaches 95.9%, and its unit adsorbance is 47.95mg/g.
Application examples 6
Weigh the phragmites communis biomass carbon sample of 0.05g embodiment 1 preparation, be placed in 150mL conical flask In, adding 50mL initial concentration is the PO of 100mg/L4-P solution, is placed in constant-temperature table, With 150r/min, 30 DEG C of constant temperature oscillation 24h, after with 0.22 μm membrane filtration, filtrate uses Ammonium Molybdate Spectrophotometric Method for Determination PO4-P concentration, each sample is repeated 3 times.After testing, phragmites communis is raw Material charcoal is to PO4The clearance of-P reaches 88.7%, and its unit adsorbance is 88.65mg/g.
Application examples 7
Weigh the phragmites communis biomass carbon sample of 0.05g embodiment 2 preparation, be placed in 150mL conical flask In, adding 50mL initial concentration is the PO of 50mg/L4-P solution, is placed in constant-temperature table, with 150r/min, 30 DEG C of constant temperature oscillation 24h, after with 0.22 μm membrane filtration, filtrate uses molybdenum Acid ammonium spectrophotometry PO4-P concentration, each sample is repeated 3 times.After testing, phragmites communis is biological Matter charcoal is to PO4The clearance of-P reaches 94.7%, and its unit adsorbance is 47.45mg/g.
Application examples 8
Weigh the phragmites communis biomass carbon sample of 0.1g embodiment 2 preparation, be placed in 150mL conical flask, Adding 50mL initial concentration is the NH of 50mg/L4-N solution, is placed in constant-temperature table, with 150 R/min, 30 DEG C of constant temperature oscillation 24h, after with 0.22 μm membrane filtration, filtrate uses salicylic acid Spectrophotometry NH4-N concentration, each sample is repeated 3 times.After testing, phragmites communis biomass Charcoal is to NH4The clearance of-N reaches 24.7%, and its unit adsorbance is 6.00mg/g.
Modified phragmites communis biomass carbon adsorption effect is to adsorb NH in actual eutrophication water4-N、TN As a example by the experiment of TP.Actual eutrophication water is taken from Taihu Lake basin urban river water, its NH4-N、 TN and TP index all reaches bad V class.
Application examples 9
Weigh the phragmites communis biomass carbon sample of 0.1g embodiment 1 preparation, be placed in 150mL conical flask, Add the actual eutrophication water of 50mL, be placed in constant-temperature table, with 150r/min, 30 DEG C of perseverances Temperature vibration 24h, after with 0.22 μm membrane filtration, filtrate uses ammonium molybdate spectrophotometric method to survey Determine NH4-N, TN and TP concentration, each sample is repeated 3 times, and result is shown in Table 1, it is seen that change The property phragmites communis biomass carbon NH to actual eutrophication water4-N, TN and TP clearance energy respectively Reach 47.7%, 19.1% and 90.4%, water body eutrophication degree can be effectively improved.
Table 1
Comparative example 1
By reed straw natural air drying, ground 40 mesh；Phragmites communis powder and 0.25 after pretreated The MgCl of mol/L2Solution mixing vibration 2h, phragmites communis powder and MgCl2The mass volume ratio of solution For 0.1g/mL；It is placed in baking oven after mixing vibration and under the conditions of 80 DEG C, moisture is evaporated；Then exist N2The lower 600 DEG C of pyrolysis charring 1h of atmosphere, heating rate is 10 DEG C/min.Gained biomass carbon steams Distilled water washing is dried the most afterwards and crosses 60 mesh sieves.The specific surface area of final products reaches 238.94m2/ g, Aperture 3.07nm.
Contrast application examples 1
Weigh the phragmites communis biomass carbon sample of 0.05g comparative example 1 preparation, be placed in 150mL conical flask In, adding 50mL initial concentration is the PO of 50mg/L4-P solution, is placed in constant-temperature table, with 150r/min, 30 DEG C of constant temperature oscillation 24h, after with 0.22 μm membrane filtration, filtrate uses molybdenum Acid ammonium spectrophotometry PO4-P concentration, each sample is repeated 3 times.After testing, phragmites communis is biological Matter charcoal is to PO4The clearance of-P reaches 84.0%, and its unit adsorbance is 42.02mg/g.Compared to Embodiment 1 and embodiment 2, PO under low concentration magnesium chloride activation condition4-P adsorbance occurs significantly Decline.
Comparative example 2
By reed straw natural air drying, ground 40 mesh；Phragmites communis powder and 2.5 after pretreated The MgCl of mol/L2Solution mixing vibration 2h, phragmites communis powder and MgCl2The mass volume ratio of solution For 0.1g/mL；It is placed in baking oven after mixing vibration and under the conditions of 80 DEG C, moisture is evaporated；Then exist N2The lower 600 DEG C of pyrolysis charring 1h of atmosphere, heating rate is 10 DEG C/min.Gained biomass carbon steams Distilled water washing is dried the most afterwards and crosses 60 mesh sieves.
Contrast application examples 2
Weigh the phragmites communis biomass carbon sample of 0.05g comparative example 2 preparation, be placed in 150mL conical flask In, adding 50mL initial concentration is the PO of 50mg/L4-P solution, is placed in constant-temperature table, with 150r/min, 30 DEG C of constant temperature oscillation 24h, after with 0.22 μm membrane filtration, filtrate uses molybdenum Acid ammonium spectrophotometry PO4-P concentration, each sample is repeated 3 times.After testing, phragmites communis is biological Matter charcoal is to PO4The clearance of-P reaches 99.01%, and its unit adsorbance is 49.50mg/g.Compared to Embodiment 1 and 2, high concentration MgCl2Condition activated biomass charcoal is under the same conditions to PO4-P's Clearance brings up to nearly 99% from 96%, and unit adsorbance brings up to 49.50 from from 47.95mg/g Mg/g, both are to water body PO4-P unit adsorbance is all close to 50mg/g, and clearance has been above 95%, To water body PO4-P has preferable removal effect.Certainly the MgCl of higher concentration2Immersion condition meeting Increasing biomass carbon preparation cost, the economic benefit producing preparation in conjunction with biomass carbon considers, this patent It is proposed with MgCl2Concentration is 0.5～0.75mol/L.

Claims (8)

1. the preparation method of a modified phragmites communis biomass carbon, it is characterised in that comprise the following steps:
(1) reed straw grinds after natural air drying and sieves, and obtains phragmites communis powder；
(2) by MgCl2Solution mixes with phragmites communis powder, after drying, carries out pyrolysis charring, then Post-treated obtain described modified phragmites communis biomass carbon；
Described MgCl2The concentration of solution is 0.5～0.75mol/L, phragmites communis powder and MgCl2Solution Mass volume ratio is 0.1g/mL.
The preparation method of modified phragmites communis biomass carbon the most according to claim 1, its feature exists In, in step (1), described reed straw crosses 40 mesh sieves after air-drying, grinding.
The preparation method of modified phragmites communis biomass carbon the most according to claim 1, its feature exists In, in step (2), described pyrolysis charring is at N2Carrying out under atmosphere, temperature is 500～700 DEG C, Time is 1h, and heating rate is 10 DEG C/min.
The preparation method of modified phragmites communis biomass carbon the most according to claim 1, its feature exists In, in step (2), described dry temperature is 80 DEG C.
The preparation method of modified phragmites communis biomass carbon the most according to claim 1, its feature exists In, in step (2), described post processing includes washing, is dried and crosses 60 mesh sieves.
6. the modified phragmites communis prepared according to the method described in Claims 1 to 5 any claim Biomass carbon.
7. a modified phragmites communis biomass carbon according to claim 6 is phosphorous, nitrogen in process Application in actual eutrophication water.
Modified phragmites communis biomass carbon the most according to claim 7 is processing phosphorous, the reality of nitrogen Application in eutrophication water, it is characterised in that described phosphorus derives from PO4 3-, nitrogen source in NH4 +。
CN201610315913.1A 2016-05-12 2016-05-12 Modified reed biomass charcoal and preparing method and application thereof Pending CN106000334A (en)

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