CN109847698A - A kind of preparation method of mulberry tree bar biomass carbon/iron and manganese oxides compound adsorbent - Google Patents
A kind of preparation method of mulberry tree bar biomass carbon/iron and manganese oxides compound adsorbent Download PDFInfo
- Publication number
- CN109847698A CN109847698A CN201910107977.6A CN201910107977A CN109847698A CN 109847698 A CN109847698 A CN 109847698A CN 201910107977 A CN201910107977 A CN 201910107977A CN 109847698 A CN109847698 A CN 109847698A
- Authority
- CN
- China
- Prior art keywords
- mulberry tree
- tree bar
- solution
- iron
- dry
- 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
Abstract
The invention discloses a kind of preparation methods of mulberry tree bar biomass carbon/iron and manganese oxides compound adsorbent.By the mulberry tree bar powder of crushing drying, it is added to ZnCl2In solution, stirring, heating water bath oscillating reactions；Natural cooling, filtering, after dry, charing is ground up, sieved, and is washed, dry, obtains mulberry tree bar charcoal；Mulberry tree bar biological carbon materials are placed in ultrapure water, KMnO is added in ultrasonication under magnetic stirring4Solution, heating water bath, stirring；NH is added4HCO3Solution, stirring；Instill FeSO4Solution, then mixture ph is adjusted to 6.0 ~ 8.0 with NaOH solution, heating water bath stirs；Natural cooling, filtering is dry after washing, obtains mulberry tree bar biomass carbon/iron and manganese oxides compound adsorbent.Present invention process equipment is simple, easy；Obtained adsorbent has preferable effect to the processing of chromate waste water, can be widely applied to industrial and mining enterprises' advanced treating chromate waste water process.
Description
Technical field
The present invention relates to a kind of preparation methods of mulberry tree bar biomass carbon/iron and manganese oxides compound adsorbent, utilize mulberry tree
Bar is main material, has studied mulberry tree bar biomass carbon/iron and manganese oxides compound adsorbent preparation method.Belong to material preparation
With water treatment field.
Background technique
In recent years, heavy metal pollution problem becomes increasingly conspicuous.Chromium is a kind of great environmental contaminants of harmfulness, often with Cr
(VI) exist with the form of Cr (III), excellent it is maximum with the toxicity of Cr (VI), often by as first kind carcinogen.Cr VI
Mainly with chromate (CrO4 2-) and bichromate (Cr2O7 2-) form is stored in water body.Chromium is mainly derived from metallurgy, metal adds
The industries such as work, plating, process hides, paint, pigment, printing and dyeing, pharmacy.Studies have shown that the compound of Cr (VI) is not involved in human body
Metabolism, but the change of genetic code can be caused, so as to cause the mutation and canceration of cell.The parent of Long Term Contact Cr VI
It is also possible to bring undesirable influence to the intellectual development of its offspring.
The main method of removal chromium has: ion-exchange, membrane separation process, the oxidation/precipitation method, flocculation/coprecipitation, micro- life
Object method, absorption method etc..In these methods, absorption method is since equipment is simple, occupied area is small, operation is easy, effect stability, place
After reason waste water can be recycled, renewable use the advantages that and be widely used.Most common adsorbent is activity in water process
Charcoal.According to statistics, in developed country, active carbon dosage in terms of environmental improvement accounts for about the 1/3 of total amount.Prepare the main original of active carbon
Material is timber and coal, but since these resources are limited, has been developed both at home and abroad using biomass resource, such as straw, fruit
Shell, fruit stone and other agriculture and forestry products etc. are to prepare charcoal and for removing the heavy metal such as arsenic, chromium, cadmium, lead etc. in waste water.Extensively
West is China kind maximum provinces and regions Sang Yangcan, and by 2015, mulberry branch produced up to 6,000,000 tons or more per year, by mulberry tree branch resource
Change using charcoal is prepared into, certain economic well-being of workers and staff is not only brought to local farmers, but also turn waste into wealth, economized on resources.But without
The effect is relatively poor for these modified charcoal Adsorption heavy metals.Therefore development adsorption capacity is stronger, the scope of application is wider array of
Modification biological charcoal is always the target that people pursue.
Ferriferous oxide has stronger adsorptive selectivity to chromium, can use ferriferous oxide modified adsorbent to increase its absorption
Ability.The oxide of manganese has stronger oxidisability and adsorption activity, on the one hand can use its adsorbing metal pollutant, another
Aspect can also be oxidized to iron nanoscale oxide.Therefore, the present invention combines iron and manganese oxides and charcoal,
Prepare adsorption effect more preferably adsorbent material.
Summary of the invention
It is an object of the invention to provide one kind under normal pressure, sub- with zinc chloride, sulfuric acid using mulberry tree bar as primary raw material
Iron, potassium permanganate and ammonium hydrogen carbonate are auxiliary material, prepare mulberry tree bar biomass carbon/iron and manganese oxides compound adsorbent.
Currently, in the adsorbent material of the more adsorptive chromium removal of research, single substance have hydrated manganese dioxide, goethite,
Dolomite, titanium dioxide, molecular sieve, montmorillonite and chitosan etc.；Be magnetic chitosan, rice husk base of compound substance is mesoporous
SiO2, magnetic modified zeolite, cerium/ferroso-ferric oxide, tripolite loading iron oxide, graphene oxide modified biological charcoal etc..These
The main component of some adsorbent materials is metal oxide in adsorbent material, and the main component of some adsorbent materials is some activity
The organic substance of charcoal or charcoal, they are all the main matters of Adsorption of Chromium.In order to overcome existing chromium adsorbent adsorption capacity low,
The shortcomings that limited sorption capacity, makes full use of Guangxi agricultural wastes abundant-mulberry tree bar resource.The present invention provides a kind of except chromium
Adsorbent material --- mulberry tree bar biomass carbon/iron and manganese oxides compound adsorbent preparation method.Thus method prepares
Mulberry tree bar biomass carbon/iron and manganese oxides compound adsorbent, when adsorbing initial hexavalent chromium concentration lower than 50.0 mg/L solution,
Hexavalent chromium concentration is lower than 0.05 mg/L in water sample after adsorption equilibrium, and removal rate, which reaches, is greater than 99%, reaches national integrated wastewater discharge
Standard (GB8978-1996).
Specific steps are as follows:
(1) will mulberry tree bar peeling after dry, with after omnipotent broken crusher machine cross 20 meshes, be placed in baking oven at 85 DEG C dry it is standby
With.
(2) weigh mulberry tree bar powder obtained by 25 ~ 50 g steps (1) in 2 L beakers, be added 500 mL concentration be 0.6 ~
The liquor zinci chloridi of 1.8 mol/L, after electric stirring is uniform, heating water bath is to 80 ~ 100 DEG C, with 150 ~ 200 r/min oscillation frequencies
Rate oscillating reactions 4 ~ 8 hours.
(3) by step (2) products therefrom natural cooling, filtering is 48 ~ 72 hours dry at 50 ~ 60 DEG C.
(4) step (3) products therefrom is carbonized at 400 ~ 950 DEG C, is then ground, cross 200 meshes, undersized product
It is immersed in the hydrochloric acid solution that mass percent concentration is 2 ~ 5%, stands 10 hours, filtering, then filter cake is washed repeatedly with ultrapure water
Multipass, as filtrate pH to 6.0 ~ 7.0, filtering, filter cake is placed in porcelain dish at 110 ~ 135 DEG C 8 ~ 10 hours dry, acquisition mulberry tree
Bar charcoal.
(5) mulberry tree bar charcoal obtained by 3 g steps (4) is added in 500 mL stuffed conical flasks, is existed with sonic oscillation instrument
Supersonic frequency is 25-45 KHZFor lower sonic oscillation after 15 ~ 35 minutes, it is 0.1 ~ 0.5 that 50 mL concentration are added under magnetic stirring
The KMnO of mol/L4Solution, heating water bath is to 80 ~ 100 DEG C, magnetic agitation 15 minutes.
(6) NH that 50 mL concentration are 0.6 ~ 1.5 mol/L is added into step (5) product4HCO3Solution continues magnetic force and stirs
It mixes 15 minutes.
(7) under magnetic stirring, being slowly dropped into 50 mL concentration into step (6) product with buret is 0.2 ~ 1.0
The FeSO of mol/L4Solution, with NaOH solution regulating step (6) mixture ph that concentration is 1.0 ~ 3.0 mol/L to 6.0 ~
8.0, heating water bath continues magnetic agitation 4 ~ 8 hours to 95 DEG C.
(8) it by mix products natural cooling obtained by step (7), filtering, products therefrom is washed repeatedly through ultrapure water to neutrality,
It is washed one time with dehydrated alcohol again, filter cake is placed in porcelain dish drying 8 ~ 10 hours at 110 DEG C, crosses 200 meshes, and it is raw to obtain mulberry tree bar
Substance charcoal/iron and manganese oxides compound adsorbent.
Present invention process equipment is simple, easy, is main raw material(s) due to utilizing mulberry tree bar, substantially reduces production cost,
And improve the performance indexes of product；Prepared adsorbent can be widely applied to industrial and mining enterprises' advanced treating chromate waste water
Process.
Detailed description of the invention
Fig. 1 is the figure of mulberry tree bar charcoal SEM before modified, in which: (a) amplifies 6000 times, (b) amplifies 10000 times.
Fig. 2 is mulberry tree bar biomass carbon/iron and manganese oxides compound adsorbent SEM figure, in which: (a) amplifies 6000 times, (b)
10000 times of amplification.
Specific embodiment
Embodiment:
(1) will mulberry tree bar peeling after dry, with after omnipotent broken crusher machine cross 20 meshes, be placed in baking oven at 85 DEG C dry it is standby
With.
(2) mulberry tree bar powder obtained by 40 g steps (1) is weighed in 2 L beakers, and 500 mL concentration of addition are 0.6 mol/L
Liquor zinci chloridi, after electric stirring is uniform, heating water bath to 95 DEG C, with 200 r/min oscillation frequencies reaction 4 hours.
(3) by step (2) products therefrom natural cooling, filtering is 48 hours dry at 60 DEG C.
(4) step (3) products therefrom is carbonized at 450 DEG C, is then ground, cross 200 meshes, undersized product impregnates
In the hydrochloric acid solution that mass percent concentration is 3%, 10 hours is stood, then wash filter cake multipass repeatedly with ultrapure water, work as filtrate
For pH value to 6.5, filtering, filter cake is placed in porcelain dish at 110 DEG C 8 hours dry, acquisition mulberry tree bar charcoal.
(5) mulberry tree bar charcoal obtained by 3 g steps (4) is added in 500 mL stuffed conical flasks, is existed with sonic oscillation instrument
Supersonic frequency is 35 KHZThe KMnO that 50 mL concentration are 0.2 mol/L is added after 30 minutes in lower sonic oscillation under magnetic stirring4
Solution, heating water bath is to 95 DEG C, magnetic agitation 15 minutes.
(6) NH that 50 mL concentration are 1.2 mol/L is added into step (5) product4HCO3Solution continues magnetic agitation 15
Minute.
(7) under magnetic stirring, being slowly dropped into 50 mL concentration into step (6) product with buret is 0.5 mol/L's
FeSO4Solution, with NaOH solution regulating step (6) mixture ph that concentration is 1.0 mol/L to 7.5, heating water bath to 95
DEG C, continue magnetic agitation 4 hours.
(8) it by mix products natural cooling obtained by step (7), filtering, products therefrom is washed repeatedly through ultrapure water to neutrality,
It is washed one time with dehydrated alcohol again, filter cake is placed in porcelain dish drying 8 hours at 110 DEG C, crosses 200 meshes, obtains mulberry tree bar biology
Matter charcoal/iron and manganese oxides compound adsorbent.
It is raw using field emission scanning electron microscope (JSM-7900F, Japan) analysis mulberry tree bar biomass carbon and mulberry tree bar
Substance charcoal/iron and manganese oxides compound adsorbent pattern, the result is shown in Figure 1, Fig. 2.
Claims (1)
1. a kind of preparation method of mulberry tree bar biomass carbon/iron and manganese oxides compound adsorbent, it is characterised in that specific steps are as follows:
(1) will mulberry tree bar peeling after dry, with after omnipotent broken crusher machine cross 20 meshes, be placed in baking oven at 85 DEG C dry it is standby
With；
(2) mulberry tree bar powder obtained by 25 ~ 50 g steps (1) is weighed in 2 L beakers, and it is 0.6 ~ 1.8 that 500 mL concentration, which are added,
The liquor zinci chloridi of mol/L, after electric stirring is uniform, heating water bath is to 80 ~ 100 DEG C, with the vibration of 150 ~ 200 r/min frequencies of oscillation
Swing reaction 4 ~ 8 hours；
(3) by step (2) products therefrom natural cooling, filtering is 48 ~ 72 hours dry at 50 ~ 60 DEG C；
(4) step (3) products therefrom is carbonized at 400 ~ 950 DEG C, is then ground, cross 200 meshes, undersized product impregnates
In the hydrochloric acid solution that mass percent concentration is 2 ~ 5%, 10 hours are stood, filtering, then to wash with ultrapure water filter cake repeatedly more
Time, as filtrate pH to 6.0 ~ 7.0, filtering, filter cake is placed in porcelain dish at 110 ~ 135 DEG C 8 ~ 10 hours dry, acquisition mulberry tree bar
Charcoal；
(5) mulberry tree bar charcoal obtained by 3 g steps (4) is added in 500 mL stuffed conical flasks, with sonic oscillation instrument in ultrasound
Frequency is 25-45 KHZFor lower sonic oscillation after 15 ~ 35 minutes, it is 0.1 ~ 0.5 mol/L that 50 mL concentration are added under magnetic stirring
KMnO4Solution, heating water bath is to 80 ~ 100 DEG C, magnetic agitation 15 minutes；
(6) NH that 50 mL concentration are 0.6 ~ 1.5 mol/L is added into step (5) product4HCO3Solution continues magnetic agitation 15
Minute；
(7) under magnetic stirring, being slowly dropped into 50 mL concentration into step (6) product with buret is 0.2 ~ 1.0 mol/L's
FeSO4Solution, with NaOH solution regulating step (6) mixture ph that concentration is 1.0 ~ 3.0 mol/L to 6.0 ~ 8.0, water-bath
95 DEG C are heated to, is continued magnetic agitation 4 ~ 8 hours；
(8) by mix products natural cooling obtained by step (7), filtering, products therefrom is washed to neutrality repeatedly through ultrapure water, then is used
Dehydrated alcohol washs one time, and filter cake is placed in porcelain dish drying 8 ~ 10 hours at 110 DEG C, crosses 200 meshes, obtains mulberry tree bar biomass
Charcoal/iron and manganese oxides compound adsorbent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910107977.6A CN109847698A (en) | 2019-02-02 | 2019-02-02 | A kind of preparation method of mulberry tree bar biomass carbon/iron and manganese oxides compound adsorbent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910107977.6A CN109847698A (en) | 2019-02-02 | 2019-02-02 | A kind of preparation method of mulberry tree bar biomass carbon/iron and manganese oxides compound adsorbent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109847698A true CN109847698A (en) | 2019-06-07 |
Family
ID=66897636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910107977.6A Pending CN109847698A (en) | 2019-02-02 | 2019-02-02 | A kind of preparation method of mulberry tree bar biomass carbon/iron and manganese oxides compound adsorbent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109847698A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110368900A (en) * | 2019-08-20 | 2019-10-25 | 厦门理工学院 | A kind of bamboo charcoal modified material and its preparation method and application |
| CN110408416A (en) * | 2019-09-11 | 2019-11-05 | 中国农业科学院农业环境与可持续发展研究所 | A kind of modified biomass charcoal and the preparation method and application thereof |
| CN110433772A (en) * | 2019-07-24 | 2019-11-12 | 桂林理工大学 | A kind of preparation method and application of mulberry tree bar charcoal/Fe-Mn compound adsorbent |
| CN110433765A (en) * | 2019-08-18 | 2019-11-12 | 桂林理工大学 | The preparation method and applications of EDTA intercalation ferrimanganic layered double hydroxide |
| CN111302482A (en) * | 2020-03-03 | 2020-06-19 | 北京林业大学 | Biological retention material for synchronously removing nitrogen, phosphorus and pesticides in rainwater runoff and application method |
| CN111530421A (en) * | 2020-05-13 | 2020-08-14 | 内蒙古民族大学 | Biochar for heavy metal adsorption and preparation method thereof |
| CN111575031A (en) * | 2020-06-01 | 2020-08-25 | 广西壮族自治区农业科学院 | Method for preparing biochar and improving white serous soil by utilizing mulberry or perennial jasmine branches |
| CN111672466A (en) * | 2020-06-07 | 2020-09-18 | 桂林理工大学 | Preparation method and application of magnetic iron oxide/mulberry tree stalk biochar composite material |
| CN111871372A (en) * | 2020-07-16 | 2020-11-03 | 广东省测试分析研究所（中国广州分析测试中心） | Preparation method of iron-manganese oxide/starch/biochar composite material for simultaneously adsorbing inorganic arsenic and organic arsenic in water body |
| CN113877522A (en) * | 2021-10-30 | 2022-01-04 | 中冶华天工程技术有限公司 | Preparation method and application of diatomite-based adsorbent loaded with iron-manganese oxide |
| CN114540337A (en) * | 2022-02-25 | 2022-05-27 | 华南师范大学 | Preparation method and application of microorganism immobilized composite particles |
| CN115849520A (en) * | 2023-01-09 | 2023-03-28 | 合肥工业大学 | Preparation method of iron-manganese biochar material, application, device and method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030196549A1 (en) * | 2002-04-17 | 2003-10-23 | Rohrbach Ronald P. | Chemical/biological decontamination filter |
| CN1994555A (en) * | 2006-12-15 | 2007-07-11 | 四川省林业科学研究院 | Impregnated active carbon and preparation method thereof |
| CN104888704A (en) * | 2015-05-21 | 2015-09-09 | 桂林理工大学 | Preparation method of mulberry stem active carbon/ferrum and manganese oxide composite adsorbent |
| CN104888705A (en) * | 2015-05-21 | 2015-09-09 | 桂林理工大学 | Preparation method of magnetic ferric oxide/bagasse active carbon |
| CN107413296A (en) * | 2017-07-21 | 2017-12-01 | 浙江省农业科学院 | A kind of charcoal ferrojacobsite composite for being used to adsorb heavy metal antimony cadmium |
| CN107537441A (en) * | 2017-09-23 | 2018-01-05 | 湖南大学 | A kind of nano-metal particle is modified the preparation and use of hydro-thermal Carbon Materials |
| CN107551998A (en) * | 2017-09-23 | 2018-01-09 | 湖南大学 | A kind of charcoal stabilizes the preparation method and application of iron and manganese oxides |
-
2019
- 2019-02-02 CN CN201910107977.6A patent/CN109847698A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030196549A1 (en) * | 2002-04-17 | 2003-10-23 | Rohrbach Ronald P. | Chemical/biological decontamination filter |
| CN1994555A (en) * | 2006-12-15 | 2007-07-11 | 四川省林业科学研究院 | Impregnated active carbon and preparation method thereof |
| CN104888704A (en) * | 2015-05-21 | 2015-09-09 | 桂林理工大学 | Preparation method of mulberry stem active carbon/ferrum and manganese oxide composite adsorbent |
| CN104888705A (en) * | 2015-05-21 | 2015-09-09 | 桂林理工大学 | Preparation method of magnetic ferric oxide/bagasse active carbon |
| CN107413296A (en) * | 2017-07-21 | 2017-12-01 | 浙江省农业科学院 | A kind of charcoal ferrojacobsite composite for being used to adsorb heavy metal antimony cadmium |
| CN107537441A (en) * | 2017-09-23 | 2018-01-05 | 湖南大学 | A kind of nano-metal particle is modified the preparation and use of hydro-thermal Carbon Materials |
| CN107551998A (en) * | 2017-09-23 | 2018-01-09 | 湖南大学 | A kind of charcoal stabilizes the preparation method and application of iron and manganese oxides |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110433772A (en) * | 2019-07-24 | 2019-11-12 | 桂林理工大学 | A kind of preparation method and application of mulberry tree bar charcoal/Fe-Mn compound adsorbent |
| CN110433765A (en) * | 2019-08-18 | 2019-11-12 | 桂林理工大学 | The preparation method and applications of EDTA intercalation ferrimanganic layered double hydroxide |
| CN110368900A (en) * | 2019-08-20 | 2019-10-25 | 厦门理工学院 | A kind of bamboo charcoal modified material and its preparation method and application |
| CN110408416A (en) * | 2019-09-11 | 2019-11-05 | 中国农业科学院农业环境与可持续发展研究所 | A kind of modified biomass charcoal and the preparation method and application thereof |
| CN111302482B (en) * | 2020-03-03 | 2022-04-05 | 北京林业大学 | Biological retention material for synchronously removing nitrogen, phosphorus and pesticides in rainwater runoff and application method |
| CN111302482A (en) * | 2020-03-03 | 2020-06-19 | 北京林业大学 | Biological retention material for synchronously removing nitrogen, phosphorus and pesticides in rainwater runoff and application method |
| CN111530421A (en) * | 2020-05-13 | 2020-08-14 | 内蒙古民族大学 | Biochar for heavy metal adsorption and preparation method thereof |
| CN111575031A (en) * | 2020-06-01 | 2020-08-25 | 广西壮族自治区农业科学院 | Method for preparing biochar and improving white serous soil by utilizing mulberry or perennial jasmine branches |
| CN111672466A (en) * | 2020-06-07 | 2020-09-18 | 桂林理工大学 | Preparation method and application of magnetic iron oxide/mulberry tree stalk biochar composite material |
| CN111871372A (en) * | 2020-07-16 | 2020-11-03 | 广东省测试分析研究所（中国广州分析测试中心） | Preparation method of iron-manganese oxide/starch/biochar composite material for simultaneously adsorbing inorganic arsenic and organic arsenic in water body |
| CN111871372B (en) * | 2020-07-16 | 2022-07-08 | 广东省测试分析研究所（中国广州分析测试中心） | Preparation method of iron-manganese oxide/starch/biochar composite material for simultaneously adsorbing inorganic arsenic and organic arsenic in water body |
| CN113877522A (en) * | 2021-10-30 | 2022-01-04 | 中冶华天工程技术有限公司 | Preparation method and application of diatomite-based adsorbent loaded with iron-manganese oxide |
| CN114540337A (en) * | 2022-02-25 | 2022-05-27 | 华南师范大学 | Preparation method and application of microorganism immobilized composite particles |
| CN115849520A (en) * | 2023-01-09 | 2023-03-28 | 合肥工业大学 | Preparation method of iron-manganese biochar material, application, device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109847698A (en) | A kind of preparation method of mulberry tree bar biomass carbon/iron and manganese oxides compound adsorbent | |
| Vilardi et al. | Heavy metals adsorption by banana peels micro-powder: Equilibrium modeling by non-linear models | |
| Cimino et al. | Removal of toxic cations and Cr (VI) from aqueous solution by hazelnut shell | |
| CN106010601B (en) | It is a kind of using banana skin preparation charcoal, preparation method and applications | |
| Wang et al. | Removal of chromium (VI) from aqueous solution using walnut hull | |
| Gao et al. | Characterization of Cr (VI) removal from aqueous solutions by a surplus agricultural waste—rice straw | |
| Sun et al. | Adsorptive recovery of UO22+ from aqueous solutions using collagen–tannin resin | |
| CN105712466B (en) | A kind of ozone catalytic wet oxidation method of phenol wastewater | |
| CN105797693A (en) | Magnetic chaff charcoal for removing lead and cadmium in water and preparation and application method thereof | |
| CN109675581B (en) | Ferro-manganese bimetal oxide modified biochar photo-Fenton composite material and preparation method thereof | |
| CN108439525A (en) | A kind of sewage-treating agent for heavy metal pollution | |
| CN103623782A (en) | Preparation method for composite magnetic adsorption material and method for removing heavy metal ions in waste water | |
| CN107500497B (en) | Treatment method and system for black and odorous water body sludge | |
| CN108786832B (en) | Layered double-metal hydroxide composite material and preparation and application thereof | |
| CN110433772A (en) | A kind of preparation method and application of mulberry tree bar charcoal/Fe-Mn compound adsorbent | |
| Wang et al. | Biosorption of copper (II) from aqueous solutions by Aspergillus niger-treated rice straw | |
| CN109317095A (en) | A kind of composite material and preparation method for hexavalent chromium removal | |
| CN102380355A (en) | Chromium (VI) detoxifying adsorbent and preparation method thereof | |
| Chen et al. | Preparation and characteristics of anion exchanger from corn stalks | |
| He et al. | Removal of vanadium from aquatic environment using phosphoric acid modified rice straw | |
| Sireesha et al. | Comparative studies of heavy metal removal from aqueous solution using novel biomass and biochar-based adsorbents: characterization, process optimization, and regeneration | |
| Itankar et al. | Employing waste to manage waste: Utilizing waste biomaterials for the elimination of hazardous contaminant [Cr (VI)] from aqueous matrices | |
| Cao et al. | Reductive removal of Cr (VI) by citric acid promoted by ceramsite particles: Kinetics, influential factors, and mechanisms | |
| Lv et al. | Ultrafast removal of methylene blue from water by Fenton-like pretreated peanut hull as biosorbent | |
| CN107617425A (en) | A kind of modified cocoanut shell and the method using vanadium in its reduction water body |
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 |
Application publication date: 20190607 |
|
| RJ01 | Rejection of invention patent application after publication |