CN110711556A - Manufacturing method of modified activated carbon for purifying formaldehyde in air - Google Patents

Manufacturing method of modified activated carbon for purifying formaldehyde in air Download PDF

Info

Publication number
CN110711556A
CN110711556A CN201810768422.1A CN201810768422A CN110711556A CN 110711556 A CN110711556 A CN 110711556A CN 201810768422 A CN201810768422 A CN 201810768422A CN 110711556 A CN110711556 A CN 110711556A
Authority
CN
China
Prior art keywords
activated carbon
modified activated
manufacturing
drying
carbon
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
Application number
CN201810768422.1A
Other languages
Chinese (zh)
Inventor
李弘�
吕刚
乔宏
吕金昌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Steed Kay Environmental Engineering Ltd By Share Ltd
Original Assignee
Shanghai Steed Kay Environmental Engineering Ltd By Share Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Steed Kay Environmental Engineering Ltd By Share Ltd filed Critical Shanghai Steed Kay Environmental Engineering Ltd By Share Ltd
Priority to CN201810768422.1A priority Critical patent/CN110711556A/en
Publication of CN110711556A publication Critical patent/CN110711556A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • 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
    • 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
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/3071—Washing or leaching
    • 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
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3202—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the carrier, support or substrate used for impregnation or coating
    • B01J20/3204—Inorganic carriers, supports or substrates
    • 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
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3214—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the method for obtaining this coating or impregnating
    • 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
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/06—Polluted air

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

The invention relates to a method for manufacturing modified activated carbon for purifying formaldehyde in air, which comprises the following steps: (1) ultrasonically washing the activated carbon matrix with deionized water; (2) drying the washed activated carbon substrate; (3) weighing a certain amount of trihydroxyaminomethane or amino alcohol compound, and adding deionized water to prepare a solution with a certain concentration; (4) adding the pretreated activated carbon matrix into the solution prepared in the step (3), stirring, heating in a water bath for 1-2 h, and performing ultrasonic auxiliary treatment; (5) filtering the mixed solution to obtain modified activated carbon for adsorbing the trihydroxy aminomethane or the amino alcohol compound; (6) the modified activated carbon is dried in a drying oven. The invention has the advantages that: the application range is wide, the adopted raw materials are easy to obtain, the cost is low, the formaldehyde adsorption effect is excellent, and the formaldehyde problem of new house decoration can be solved.

Description

Manufacturing method of modified activated carbon for purifying formaldehyde in air
Technical Field
The invention relates to a method for manufacturing modified activated carbon for purifying formaldehyde in air.
Background
Along with the continuous development of economy and society, various indoor decorations are popularized, and public buildings and residential buildings use a large amount of composite materials in the decorations, so that considerable volatile organic gases are gathered in indoor air, the indoor air quality is affected, the health of people is harmed, a series of negative effects are caused, the distribution range of formaldehyde in indoor air pollutants is wider, and the harm is more prominent. In the era that people increasingly pay attention to health, the method has the advantages that good indoor air quality is maintained, the living quality of people is improved, and the guarantee of the health of people is a problem which is urgently concerned by the majority of people, so that the research on the adsorption of volatile organic compounds, particularly the adsorption of formaldehyde, is urgent and important.
Disclosure of Invention
The invention aims to provide a method for manufacturing modified activated carbon for purifying formaldehyde in air, which aims to solve the problems in the background technology.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a manufacturing method of modified activated carbon for purifying formaldehyde in air comprises the following steps:
(1) weighing a certain amount of activated carbon matrix, and ultrasonically washing the activated carbon matrix for 1-3 hours by using deionized water to fully wash impurities on the surface;
(2) drying the activated carbon substrate washed in the step (1) in a drying oven at 50-75 ℃ to obtain a pretreated activated carbon substrate;
(3) weighing a certain amount of trihydroxy aminomethane or aminoalcohol compounds, placing into a beaker, and adding deionized water into the beaker to prepare a solution with a certain concentration;
(4) adding the pretreated activated carbon matrix obtained in the step (2) into the solution prepared in the step (3), stirring for 10-30 min, placing the beaker into a water bath pot, heating for 1-2 h, and using ultrasonic auxiliary treatment in the process;
(5) filtering the mixed solution treated in the cloth step (4) to obtain modified activated carbon for adsorbing the trihydroxy aminomethane or the amino alcohol compound;
(6) and (3) drying the modified activated carbon which is obtained by filtering in the step (5) and adsorbs the trihydroxy aminomethane or aminoalcohol compound in a drying oven at the drying temperature of 80-160 ℃ for 3-15 h to obtain a modified activated carbon finished product.
As a preferred scheme, the activated carbon substrate can be selected from activated carbon such as coconut shell carbon, fruit shell carbon, wood carbon, coal carbon, petroleum coke and the like.
Preferably, the iodine value of the activated carbon substrate is 300-1200, and the surface area of the activated carbon substrate is 200-1200 m2/g。
Preferably, the amino alcohol compound in step (3) refers to amino ethyl propylene glycol, amino methyl propanol, amino propylene glycol, and various amino group-containing compounds or mixtures produced from the amino alcohol compound as a raw material.
The invention has the advantages that: the method for preparing the modified activated carbon has simple and convenient operation, wide application range, easily obtained raw materials and lower cost, adopts a mode of attaching the trihydroxy aminomethane or the amino alcohol compound on the activated carbon substrate, has excellent formaldehyde adsorption effect, and can solve the problem of formaldehyde in new house decoration.
Detailed Description
The invention is illustrated below by means of specific examples, without being restricted thereto.
Example 1
A manufacturing method of modified activated carbon for purifying formaldehyde in air comprises the following steps:
(1) weighing a certain amount of activated carbon matrix, and ultrasonically washing the activated carbon matrix for 1h by using deionized water to fully wash surface impurities;
(2) drying the activated carbon matrix washed in the step (1) in a drying oven at 50 ℃ to obtain a pretreated activated carbon matrix;
(3) weighing a certain amount of trihydroxy aminomethane or aminoalcohol compounds, placing into a beaker, and adding deionized water into the beaker to prepare a solution with a certain concentration;
(4) adding the pretreated activated carbon matrix obtained in the step (2) into the solution prepared in the step (3), stirring for 10min, placing the beaker into a water bath pot, heating for 1h, and performing ultrasonic auxiliary treatment in the process;
(5) filtering the mixed solution treated in the cloth step (4) to obtain modified activated carbon for adsorbing the trihydroxy aminomethane or the amino alcohol compound;
(6) and (3) drying the modified activated carbon which is obtained by filtering in the step (5) and adsorbs the trihydroxy aminomethane or aminoalcohol compound in a drying oven at the drying temperature of 80 ℃ for 3h to obtain the finished modified activated carbon.
The activated carbon substrate is coconut shell carbon, the iodine value of the activated carbon substrate is 300, and the surface area of the activated carbon substrate is 200m2The amino alcohol compound is aminoethyl propanediol.
Placing the above treated activated carbon matrix in a volume of 1m with formaldehyde concentration of 8ppm3The removal rate of formaldehyde in the closed apparatus of (3) was 85.3%.
Example 2
A manufacturing method of modified activated carbon for purifying formaldehyde in air comprises the following steps:
(1) weighing a certain amount of activated carbon matrix, and ultrasonically washing the activated carbon matrix for 2 hours by using deionized water to fully wash impurities on the surface;
(2) drying the activated carbon substrate washed in the step (1) in a drying oven at 60 ℃ to obtain a pretreated activated carbon substrate;
(3) weighing a certain amount of trihydroxy aminomethane or aminoalcohol compounds, placing into a beaker, and adding deionized water into the beaker to prepare a solution with a certain concentration;
(4) adding the pretreated activated carbon matrix obtained in the step (2) into the solution prepared in the step (3), stirring for 20min, placing the beaker into a water bath pot, heating for 1.5h, and performing ultrasonic auxiliary treatment in the period;
(5) filtering the mixed solution treated in the cloth step (4) to obtain modified activated carbon for adsorbing the trihydroxy aminomethane or the amino alcohol compound;
(6) and (3) drying the modified activated carbon which is obtained by filtering in the step (5) and adsorbs the trihydroxy aminomethane or the aminoalcohol compound in a drying oven at the drying temperature of 120 ℃ for 9 hours to obtain a modified activated carbon finished product.
The activated carbon substrate is shell carbon, the iodine value of the activated carbon substrate is 1000, and the surface area of the activated carbon substrate is 1000m2The amino alcohol compound is aminomethyl propanol.
Placing the above treated activated carbon matrix in a volume of 1m with formaldehyde concentration of 8ppm3The sealed apparatus of (3) had a formaldehyde removal rate of 91.1%.
Example 3
A manufacturing method of modified activated carbon for purifying formaldehyde in air comprises the following steps:
(1) weighing a certain amount of activated carbon matrix, and ultrasonically washing the activated carbon matrix for 3 hours by using deionized water to fully wash surface impurities;
(2) drying the activated carbon substrate washed in the step (1) in a drying oven at 75 ℃ to obtain a pretreated activated carbon substrate;
(3) weighing a certain amount of trihydroxy aminomethane or aminoalcohol compounds, placing into a beaker, and adding deionized water into the beaker to prepare a solution with a certain concentration;
(4) adding the pretreated activated carbon matrix obtained in the step (2) into the solution prepared in the step (3), stirring for 30min, placing the beaker into a water bath pot, and heating for 2h, wherein ultrasonic auxiliary treatment is used;
(5) filtering the mixed solution treated in the cloth step (4) to obtain modified activated carbon for adsorbing the trihydroxy aminomethane or the amino alcohol compound;
(6) and (3) drying the modified activated carbon which is obtained by filtering in the step (5) and adsorbs the trihydroxy aminomethane or the aminoalcohol compound in a drying oven at the drying temperature of 160 ℃ for 15h to obtain a modified activated carbon finished product.
The activated carbon substrate is wood carbon, the iodine value of the activated carbon substrate is 1200, and the surface area of the activated carbon substrate is 1200m2The amino alcohol compound in the step (3) refers to the mixture of aminoethyl propanediol and aminomethyl propanolA compound (I) is provided.
Placing the above treated activated carbon matrix in a volume of 1m with formaldehyde concentration of 8ppm3The removal rate of formaldehyde in the closed apparatus of (3) was 98.2%.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (4)

1. A manufacturing method of modified activated carbon for purifying formaldehyde in air is characterized by comprising the following steps:
(1) weighing a certain amount of activated carbon matrix, and ultrasonically washing the activated carbon matrix for 1-3 hours by using deionized water to fully wash impurities on the surface;
(2) drying the activated carbon substrate washed in the step (1) in a drying oven at 50-75 ℃ to obtain a pretreated activated carbon substrate;
(3) weighing a certain amount of trihydroxy aminomethane or aminoalcohol compounds, placing into a beaker, and adding deionized water into the beaker to prepare a solution with a certain concentration;
(4) adding the pretreated activated carbon matrix obtained in the step (2) into the solution prepared in the step (3), stirring for 10-30 min, placing the beaker into a water bath pot, heating for 1-2 h, and using ultrasonic auxiliary treatment in the process;
(5) filtering the mixed solution treated in the cloth step (4) to obtain modified activated carbon for adsorbing the trihydroxy aminomethane or the amino alcohol compound;
(6) and (3) drying the modified activated carbon which is obtained by filtering in the step (5) and adsorbs the trihydroxy aminomethane or aminoalcohol compound in a drying oven at the drying temperature of 80-160 ℃ for 3-15 h to obtain a modified activated carbon finished product.
2. The method for manufacturing the modified activated carbon for purifying formaldehyde in air according to claim 1, wherein the method comprises the following steps: the active carbon matrix can be coconut shell carbon, fruit shell carbon, wood carbon, coal carbon, petroleum coke and other active carbon.
3. The manufacturing method of the modified activated carbon for purifying formaldehyde in the air according to claim 1 or 2, characterized in that: the iodine value of the active carbon substrate is 300-1200, and the surface area of the active carbon substrate is 200-1200 m2/g。
4. The method for manufacturing the modified activated carbon for purifying formaldehyde in air according to claim 1, wherein the method comprises the following steps: the amino alcohol compound in the step (3) refers to amino ethyl propylene glycol, amino methyl propanol, amino propylene glycol and the like, and various amino group-containing compounds or mixtures produced by using the amino alcohol compound as a raw material.
CN201810768422.1A 2018-07-13 2018-07-13 Manufacturing method of modified activated carbon for purifying formaldehyde in air Pending CN110711556A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810768422.1A CN110711556A (en) 2018-07-13 2018-07-13 Manufacturing method of modified activated carbon for purifying formaldehyde in air

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810768422.1A CN110711556A (en) 2018-07-13 2018-07-13 Manufacturing method of modified activated carbon for purifying formaldehyde in air

Publications (1)

Publication Number Publication Date
CN110711556A true CN110711556A (en) 2020-01-21

Family

ID=69208465

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810768422.1A Pending CN110711556A (en) 2018-07-13 2018-07-13 Manufacturing method of modified activated carbon for purifying formaldehyde in air

Country Status (1)

Country Link
CN (1) CN110711556A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112808237A (en) * 2020-12-31 2021-05-18 桐乡市健民过滤材料有限公司 Modified activated carbon fiber felt and filter screen for removing formaldehyde and preparation method thereof

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070138671A1 (en) * 2005-12-15 2007-06-21 Anastasiou Theodore J Encapsulated active material with reduced formaldehyde potential
CN101468305A (en) * 2007-12-29 2009-07-01 中国船舶重工集团公司第七一八研究所 Methyl aldehyde adsorbing substance and preparation method thereof
CN102500224A (en) * 2011-10-09 2012-06-20 嘉兴润博化工科技有限公司 Method for efficiently adsorbing free formaldehyde
CN103551028A (en) * 2013-10-10 2014-02-05 嘉兴润博化工科技有限公司 Reaction type formaldehyde scavenger with aminopolyol as active matter and preparation method thereof
CN104607151A (en) * 2015-02-13 2015-05-13 福建省鑫森炭业股份有限公司 Formaldehyde removal active carbon and preparation method thereof
CN106268252A (en) * 2016-08-08 2017-01-04 安徽科浦环保科技有限公司 A kind of high-efficiency formaldehyde scavenging agent
CN107952491A (en) * 2016-10-17 2018-04-24 秦素洁 A kind of nanocomposite for purifying formaldehyde and preparation method thereof
CN107953424A (en) * 2016-10-17 2018-04-24 秦素洁 A kind of wood materials with purifying formaldehyde and preparation method thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070138671A1 (en) * 2005-12-15 2007-06-21 Anastasiou Theodore J Encapsulated active material with reduced formaldehyde potential
CN101468305A (en) * 2007-12-29 2009-07-01 中国船舶重工集团公司第七一八研究所 Methyl aldehyde adsorbing substance and preparation method thereof
CN102500224A (en) * 2011-10-09 2012-06-20 嘉兴润博化工科技有限公司 Method for efficiently adsorbing free formaldehyde
CN103551028A (en) * 2013-10-10 2014-02-05 嘉兴润博化工科技有限公司 Reaction type formaldehyde scavenger with aminopolyol as active matter and preparation method thereof
CN104607151A (en) * 2015-02-13 2015-05-13 福建省鑫森炭业股份有限公司 Formaldehyde removal active carbon and preparation method thereof
CN106268252A (en) * 2016-08-08 2017-01-04 安徽科浦环保科技有限公司 A kind of high-efficiency formaldehyde scavenging agent
CN107952491A (en) * 2016-10-17 2018-04-24 秦素洁 A kind of nanocomposite for purifying formaldehyde and preparation method thereof
CN107953424A (en) * 2016-10-17 2018-04-24 秦素洁 A kind of wood materials with purifying formaldehyde and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112808237A (en) * 2020-12-31 2021-05-18 桐乡市健民过滤材料有限公司 Modified activated carbon fiber felt and filter screen for removing formaldehyde and preparation method thereof

Similar Documents

Publication Publication Date Title
CN104289179A (en) Method for preparing attapulgite/carbon composite adsorbent by one-step carbonization-activation
CN102107134A (en) Supported ion liquid active carbon as well as preparation method and application thereof
CN108706585B (en) Preparation method of hemp stalk activated carbon
CN108479721B (en) Formaldehyde adsorption material and application thereof
CN106744789A (en) A kind of utilization lignin prepares porous charcoal and the application in ultracapacitor
CN112169769B (en) Preparation method of amino/sulfydryl co-modified MIL-101 (Fe) adsorbent, product thereof and application thereof
CN104138744A (en) Charcoal and mineral crystal compound air purifying material and preparation method thereof
CN105148856A (en) Air purification material capable of removing formaldehyde, acetaldehyde, acetic acid and ammonia and preparation method of air purification material
CN104923160B (en) Preparation method for adsorbing the composite of heavy metal ion in stain disease
CN110711556A (en) Manufacturing method of modified activated carbon for purifying formaldehyde in air
CN110639616A (en) Preparation of amino modified MIL-68(Ga) novel photocatalyst and method for reducing Cr (VI) by using same
CN114832785A (en) Novel formaldehyde adsorption composite material and preparation method thereof
CN107859258B (en) A kind of air cleaning and environment-friendly type diatom ooze wallpaper and preparation method
CN108996807A (en) A method of with nitrogen phosphorus in modified steel scoria-zeolite absorption degradation sanitary sewage
CN112795216A (en) Preparation method of environment-friendly liquid brushing type negative ion diatom ooze coating
CN108079967A (en) A kind of air purification fiber and preparation method thereof
CN114231028A (en) Preparation method and application of boron nitride and polyaniline composite material
CN107051386A (en) The carbon material of chromium ion and its preparation in a kind of energy adsorption aqueous solution
CN101439282B (en) Method for preparing modified expanded graphite and use in benzene gas processing
CN109181000B (en) Diatomite modification method, PVC (polyvinyl chloride) wire coil pad and manufacturing method
CN107876022B (en) Preparation method of formaldehyde adsorbent
CN105174354A (en) Method for removing dye from wastewater by means of edible fungus waste
CN113209803B (en) Reaction penetrant and preparation and use methods thereof
CN111375381B (en) Application of tri (4-aminophenyl) benzene compound, air filter screen and preparation method of air filter screen
CN107321053A (en) One kind is containing modified walnut shell filtering material and its preparation technology

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20200121