CN101306347A - Preparation method and renovation method of treatment tea for absorbing heavy metal ion in waste water - Google Patents
Preparation method and renovation method of treatment tea for absorbing heavy metal ion in waste water Download PDFInfo
- Publication number
- CN101306347A CN101306347A CNA2008100598414A CN200810059841A CN101306347A CN 101306347 A CN101306347 A CN 101306347A CN A2008100598414 A CNA2008100598414 A CN A2008100598414A CN 200810059841 A CN200810059841 A CN 200810059841A CN 101306347 A CN101306347 A CN 101306347A
- Authority
- CN
- China
- Prior art keywords
- tea
- water
- heavy metal
- metal ions
- adsorb
- 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
- 241001122767 Theaceae Species 0.000 title claims abstract description 58
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 27
- 239000002351 wastewater Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000009418 renovation Methods 0.000 title claims description 8
- 150000002500 ions Chemical class 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 27
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 239000006228 supernatant Substances 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 238000012545 processing Methods 0.000 claims description 21
- 239000003480 eluent Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 239000012141 concentrate Substances 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000010970 precious metal Substances 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 abstract description 14
- 239000003463 adsorbent Substances 0.000 abstract description 8
- 230000008929 regeneration Effects 0.000 abstract description 8
- 238000011069 regeneration method Methods 0.000 abstract description 8
- 239000000047 product Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000007935 neutral effect Effects 0.000 abstract 4
- 230000001172 regenerating effect Effects 0.000 abstract 4
- 238000005406 washing Methods 0.000 abstract 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- 231100000614 poison Toxicity 0.000 abstract 1
- 238000002791 soaking Methods 0.000 abstract 1
- 235000011149 sulphuric acid Nutrition 0.000 abstract 1
- 239000003440 toxic substance Substances 0.000 abstract 1
- 235000013616 tea Nutrition 0.000 description 44
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 9
- 229910052799 carbon Inorganic materials 0.000 description 9
- 238000010521 absorption reaction Methods 0.000 description 8
- 238000003795 desorption Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000013138 pruning Methods 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 2
- 230000001473 noxious effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 235000020344 instant tea Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Water Treatment By Sorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention relates to a method for preparing and regenerating an adsorbent, and aims to provide a method for preparing and regenerating a treating tea used for absorbing heavy metal ions in waste water. The preparation method thereof comprises the following steps: firstly, after being crushed, tea raw materials are added with formaldehyde and H2SO4 solution for mixing and agitating; and secondly, the mixture is refluxed for 1 hour in a water bath, water is used for washing to the neutral after the supernatant is poured out, then NaOH solution is used for soaking for 1 hour, and then water is used for washing to the neutral after the supernatant is poured out. The regenerating method invention thereof comprises the following steps: firstly, the treating tea after absorbing the heavy metal ions is washed by water to the neutral after HCL solution is used for eluting; and secondly, the NaOH solution of a certain proportion is used for flowing through the column, and then water is used for washing to the neutral. The regenerating tea prepared by the invention can be used for absorbing the toxic substances such as the heavy metal ions in the water, the adsorption rate thereof is high, and the regeneration effect is good. As the raw materials used for preparation are cheap, the performance price ratio of the product is high, and the product has more environmental protection value compared with the common adsorbent.
Description
Technical field
The present invention relates to a kind of preparation of adsorbent and renovation process, more particularly, the present invention relates to a kind of preparation and renovation process that is used to adsorb the processing tea of heavy metal ions in wastewater.
Background technology
Remove the heavy metal ion in the industrial wastewater, generally adopt methods such as chemicals coagulating sedimentation, charcoal absorption, processing cost height not only, regeneration is difficulty also.The adsorbent of exploitation high efficiency, low cost is big to sewage quantity but waste water that plating, metal processing, e-factory that ion concentration is lower produce is still current environmental protection industry development technique of greatest concern.
The tea ash end and the pruning Lao Ye utilization in this respect that produce in a large amount of discarded tea grounds that current industrialization by instant tea and tea extracts active ingredients brings and the Tea Production process still rarely have practical research.Studied on saturated extent of adsorption, adsorption equilibrium time, the basis of pH to influence, desorb and the repeated use of adsorption effect and the competitive Adsorption of coexisting ion etc. early stage at us, the present invention develops the technology that a kind of tea product is used for the noxious materials such as heavy metal ion of adsorbed water.
Invention Inner holds
The objective of the invention is to overcome deficiency of the prior art, a kind of preparation method who is used to adsorb the processing tea of heavy metal ions in wastewater is provided, and further object of the present invention provides a kind of renovation process that is used to adsorb the processing tea of heavy metal ions in wastewater.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
The invention provides a kind of preparation method who is used to adsorb the processing tea of heavy metal ions in wastewater, may further comprise the steps:
(1) tea raw material is broken into 80 order powder, adds 5ml formaldehyde and 20ml0.02mol/L H by per 1 gram tea raw material
2SO
4The ratio of solution is mixed, and stirs in flask and makes abundant contact;
(2) previous step gained mixture returns in 60 ℃～70 ℃ water-baths and heats up in a steamer 1h, inclining washes with water to neutrality after the supernatant, soaks 1h with 20ml 0.02mol/L NaOH solution, after the supernatant that inclines, wash with water to being washed till neutrality, promptly obtain being used to adsorb the processing tea of heavy metal ions in wastewater.
As a kind of improvement, described tea raw material is that tea grounds, tealeaves ash end or tealeaves pruning leaf are wherein at least a.
The present invention also provides a kind of renovation process that is used to adsorb the processing tea of heavy metal ions in wastewater, may further comprise the steps:
(1) will adsorb treatment of heavy metal ions tea, and wash with water to neutrality behind the HCL eluant solution with 0.5～1.0mol/L, eluent concentrates the back and collects precious metal;
(2) handle tea in per 1 gram and cross post, wash with water again to neutrality and get final product with the ratio of 20ml 0.02mol/L NaOH solution.
Compared with prior art, the invention has the beneficial effects as follows:
Utilize the regeneration tea for preparing among the present invention can be used for the noxious materials such as heavy metal ion of adsorbed water, its adsorption rate height, favorable regeneration effect.Because the prices of raw and semifnished materials that are used to prepare are cheap, product price ratio height has more the value of environmental protection than general adsorbent.
The specific embodiment
The present invention is further described below in conjunction with embodiment.
Tealeaves have a large amount of netted inner hole structures and contain some component with Adsorption of Heavy Metal Ions (OH ,-COOH ,-NH2 etc.), the purpose of processing is to make it immobilization.
Embodiment 1:
Be used to adsorb the preparation method of the processing tea of heavy metal ions in wastewater, may further comprise the steps:
(1) tea raw materials such as tea grounds, tealeaves ash end or tealeaves pruning leaf is broken into 80 order powder, adds 5ml formaldehyde and 20ml 0.02mol/L H by per 1 gram tea raw material
2SO
4The ratio of solution is mixed, and stirs in flask and makes abundant contact;
(2) previous step gained mixture returns in 60 ℃～70 ℃ water-baths and heats up in a steamer 1h, inclining washes with water to neutrality after the supernatant, soaks 1h with 20ml 0.02mol/L NaOH solution, after the supernatant that inclines, wash with water to being washed till neutrality, promptly obtain being used to adsorb the processing tea of heavy metal ions in wastewater.
Above-mentioned processing tea product can upper prop, and (25mm * 300mm) as the device of Adsorption of Heavy Metal Ions, transfer pH=4.0～6.5 backs to cross post contaminant water, heavy metal ion promptly is adsorbed on the post, spills liquid and is and has removed the water body that pollutes.
Can certainly not adorn post, directly handle the ratio that tea adds the 50-80ml contaminant water, stir in 1g, Separation of Solid and Liquid, slag with handling regeneration with NaOH behind the HCL, also can reach the purpose with the post adsorbent equipment earlier.
Adsorbed the renovation process of the processing tea of heavy metal ions in wastewater, may further comprise the steps:
(1) will adsorb treatment of heavy metal ions tea, and wash with water to neutrality behind the HCL eluant solution with 0.5～1.0mol/L, eluent concentrates the back and collects precious metal;
(2) handle tea in per 1 gram and cross post, wash with water again to neutrality and get final product with the ratio of 20ml 0.02mol/L NaOH solution.
Embodiment 2:
Handle in the preparation of tea, it is 65 ℃ that second step is returned the bath temperature that heats up in a steamer;
Handle in the regeneration of tea, the HCL solution concentration that the first step wash-out is used is 0.75mol/L;
All the other steps are identical with embodiment 1.
Embodiment 3:
Handle in the preparation of tea, it is 70 ℃ that second step is returned the bath temperature that heats up in a steamer;
Handle in the regeneration of tea, the HCL solution concentration that the first step wash-out is used is 1.0mol/L;
All the other steps are identical with embodiment 1.
Handle the applicable cases of tea:
1, to Cr in the water
6+Absorption
Load onto 25mm * 300mm post with the summary of the invention 1 obtained tea of must handling as filler, containing Cr
6+Concentration is 5,10, in the 15mg/kg titer, crosses post with the 5BV/h flow velocity, gets to spill the liquid 180-80 of Hitachi Zeeman polarisation atomic absorption spectrophotometer (down together) survey Cr
6+Concentration is calculated adsorption rate.After post after the absorption washes several times with water, use the HCL50ml wash-out of 1.0mol/L again, survey the Cr of eluent
6+Concentration, calculate desorption efficiency.Post after the desorb washes with water to neutrality, crosses post with 0.02mol/LNaOH 100ml 1BV/h flow velocity, washes with water to neutrality again and is actifier column, compares with active carbon, the results are shown in following table 1
The adsorption and desorption effectiveness unit of the different adsorbents of table 1: mg/kg %
Carried out 5-7 experiment under the same conditions, its relative standard deviation's adsorption rate is 0.8-3.1%, and desorption efficiency is 1.2-3.5%, illustrates that fidelity factor is better.
The result shows that processing tea is to Cr
6+Absorption and desorption are preferably arranged, and when ion concentration was not high, the adsorption rate of handling tea was higher than active carbon; Otherwise then not as good as active carbon, but the palingenesis of active carbon is worse than processing tea.
2, to Pb in the water
2+, Cd
2+Absorption
Containing Pb respectively
2+2.0mg/kg, Cd
2+1.0mg/kg solution 100ml in, transfer earlier pH=5, add and handle tea or active carbon 2g, stirred 10 minutes, filter the Pb in the processing tea filtrate
2+Be 0.31mg/kg, Cd
2+Be 0.11mg/kg; Pb in the active carbon filtrate
2+Be 0.22mg/kg, Cd
2+Be 0.20mg/kg; Pb in the regeneration tea filtrate
2+Be 0.30mg/kg, Cd
2+Be 0.10mg/kg, their adsorption rate is as shown in table 2 below:
The adsorption effect of the different adsorbents of table 2. (n=3) unit: %
The result shows, handles tea to Pb
2+Absorption slightly be worse than active carbon, but to Cd
2+Absorption then be better than active carbon, if consider that handling tea is the cheap twice laid of price, and the source of active carbon needs timber, is unfavorable for environmental protection, the difference of cost performance makes to be handled tea and is worth of widely use in the polluted source process field.
Obviously, the invention is not restricted to above embodiment, many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
Claims (3)
1, be used to adsorb the preparation method of the processing tea of heavy metal ions in wastewater, may further comprise the steps:
(1) tea raw material is broken into 80 order powder, adds 5ml formaldehyde and 20ml0.02mol/L H by per 1 gram tea raw material
2SO
4The ratio of solution is mixed, and stirs in flask and makes abundant contact;
(2) previous step gained mixture returns in 60 ℃～70 ℃ water-baths and heats up in a steamer 1h, inclining washes with water to neutrality after the supernatant, soaks 1h with 20ml 0.02mol/L NaOH solution, after the supernatant that inclines, wash with water to being washed till neutrality, promptly obtain being used to adsorb the processing tea of heavy metal ions in wastewater.
2, the preparation method who is used to adsorb the processing tea of heavy metal ions in wastewater according to claim 1 is characterized in that, it is wherein at least a that described tea raw material is that tea grounds, tealeaves ash end or tealeaves are pruned leaf.
3, a kind of renovation process that is used to adsorb the processing tea of heavy metal ions in wastewater may further comprise the steps:
(1) will adsorb treatment of heavy metal ions tea, and wash with water to neutrality behind the HCL eluant solution with 0.5～1.0mol/L, eluent concentrates the back and collects precious metal;
(2) handle tea in per 1 gram and cross post, wash with water again to neutrality and get final product with the ratio of 20ml 0.02mol/L NaOH solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100598414A CN101306347A (en) | 2008-02-19 | 2008-02-19 | Preparation method and renovation method of treatment tea for absorbing heavy metal ion in waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100598414A CN101306347A (en) | 2008-02-19 | 2008-02-19 | Preparation method and renovation method of treatment tea for absorbing heavy metal ion in waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101306347A true CN101306347A (en) | 2008-11-19 |
Family
ID=40123156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100598414A Pending CN101306347A (en) | 2008-02-19 | 2008-02-19 | Preparation method and renovation method of treatment tea for absorbing heavy metal ion in waste water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101306347A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102363119A (en) * | 2011-05-16 | 2012-02-29 | 浙江海洋学院 | Method for removing heavy metal arsenic from aquatic product flavoring and adsorbent |
| CN102363118A (en) * | 2011-05-16 | 2012-02-29 | 浙江海洋学院 | Method and adsorbent for removing heavy metal lead in aquatic product flavoring |
| CN102363121A (en) * | 2011-05-16 | 2012-02-29 | 浙江海洋学院 | Method for removing heavy metal chromium in aquatic seasoning product and adsorbing agent |
| CN102363120A (en) * | 2011-05-16 | 2012-02-29 | 浙江海洋学院 | Method and adsorbent for removing heavy metal copper in aquatic product flavoring |
| CN102814159A (en) * | 2011-06-08 | 2012-12-12 | 工信华鑫科技有限公司 | Heavy metal adsorption material reparation process |
| CN103589435A (en) * | 2013-10-17 | 2014-02-19 | 浙江大学 | Natural regulating agent for treating heavy metal polluted farmland soil and preparation method thereof |
| CN103601315A (en) * | 2013-11-12 | 2014-02-26 | 西南科技大学 | Method for treating heavy metal wastewater in mining and metallurgy by use of waste tea dust |
| CN106423076A (en) * | 2016-08-30 | 2017-02-22 | 运城学院 | Method for preparing PM2.5 (particulate matter 2.5) and TVOC (total volatile organic compound) purification biological absorbent from plant waste materials |
| CN107285422A (en) * | 2017-07-17 | 2017-10-24 | 安徽建筑大学 | A kind of method that utilization tea grounds removes Pb In Exhausted Water ion |
| CN108178341A (en) * | 2018-03-13 | 2018-06-19 | 中国电建集团中南勘测设计研究院有限公司 | A kind of solid microbe purification particle and preparation method thereof |
| CN111346613A (en) * | 2018-12-21 | 2020-06-30 | 中国石油化工股份有限公司 | Dye wastewater adsorbent and preparation method thereof |
-
2008
- 2008-02-19 CN CNA2008100598414A patent/CN101306347A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102363119B (en) * | 2011-05-16 | 2013-10-09 | 浙江海洋学院 | Method for removing heavy metal arsenic from aquatic product flavoring and adsorbent |
| CN102363118A (en) * | 2011-05-16 | 2012-02-29 | 浙江海洋学院 | Method and adsorbent for removing heavy metal lead in aquatic product flavoring |
| CN102363121A (en) * | 2011-05-16 | 2012-02-29 | 浙江海洋学院 | Method for removing heavy metal chromium in aquatic seasoning product and adsorbing agent |
| CN102363120A (en) * | 2011-05-16 | 2012-02-29 | 浙江海洋学院 | Method and adsorbent for removing heavy metal copper in aquatic product flavoring |
| CN102363119A (en) * | 2011-05-16 | 2012-02-29 | 浙江海洋学院 | Method for removing heavy metal arsenic from aquatic product flavoring and adsorbent |
| CN102363120B (en) * | 2011-05-16 | 2013-10-09 | 浙江海洋学院 | Method for removing heavy metal copper in aquatic product flavoring |
| CN102363121B (en) * | 2011-05-16 | 2013-10-09 | 浙江海洋学院 | Method for removing heavy metal chromium in aquatic seasoning product |
| CN102363118B (en) * | 2011-05-16 | 2013-10-09 | 浙江海洋学院 | Method for removing heavy metal lead in aquatic product flavoring |
| CN102814159A (en) * | 2011-06-08 | 2012-12-12 | 工信华鑫科技有限公司 | Heavy metal adsorption material reparation process |
| CN102814159B (en) * | 2011-06-08 | 2015-01-14 | 工信华鑫科技有限公司 | Heavy metal adsorption material reparation process |
| CN103589435A (en) * | 2013-10-17 | 2014-02-19 | 浙江大学 | Natural regulating agent for treating heavy metal polluted farmland soil and preparation method thereof |
| CN103589435B (en) * | 2013-10-17 | 2016-03-02 | 浙江大学 | For administering native regulatory agent of farmland soil heavy metals pollution and preparation method thereof |
| CN103601315A (en) * | 2013-11-12 | 2014-02-26 | 西南科技大学 | Method for treating heavy metal wastewater in mining and metallurgy by use of waste tea dust |
| CN103601315B (en) * | 2013-11-12 | 2016-04-20 | 西南科技大学 | A kind of method utilizing useless tea to consider process mining and metallurgy heavy metal wastewater thereby to be worth doing |
| CN106423076A (en) * | 2016-08-30 | 2017-02-22 | 运城学院 | Method for preparing PM2.5 (particulate matter 2.5) and TVOC (total volatile organic compound) purification biological absorbent from plant waste materials |
| CN107285422A (en) * | 2017-07-17 | 2017-10-24 | 安徽建筑大学 | A kind of method that utilization tea grounds removes Pb In Exhausted Water ion |
| CN108178341A (en) * | 2018-03-13 | 2018-06-19 | 中国电建集团中南勘测设计研究院有限公司 | A kind of solid microbe purification particle and preparation method thereof |
| CN111346613A (en) * | 2018-12-21 | 2020-06-30 | 中国石油化工股份有限公司 | Dye wastewater adsorbent and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101306347A (en) | Preparation method and renovation method of treatment tea for absorbing heavy metal ion in waste water | |
| Yavuz et al. | An economic removal of Cu2+ and Cr3+ on the new adsorbents: Pumice and polyacrylonitrile/pumice composite | |
| Ayyappan et al. | Removal of Pb (II) from aqueous solution using carbon derived from agricultural wastes | |
| Mouni et al. | Adsorption of Pb (II) from aqueous solutions using activated carbon developed from Apricot stone | |
| Wasewar | Adsorption of metals onto tea factory waste: a review | |
| Abidin et al. | Recovery of gold (III) from an aqueous solution onto a durio zibethinus husk | |
| CN107159701B (en) | Method for simultaneously removing arsenic and antimony in soil | |
| CN102489245B (en) | Modified pumice absorbing material and preparation method as well as application thereof | |
| CN101293254B (en) | Method for eluting and renovating soil with heavy metal-organic matter combined pollution | |
| CN106825018A (en) | A kind of composite chemical ELUTION METHOD of efficient restoration of soil polluted by heavy metal | |
| CN103240058A (en) | Method for preparing lanthanum and iron composite absorbing phosphorous removal agent | |
| Kamarehie et al. | Nitrate removal from aqueous solutions using granular activated carbon modified with iron nanoparticles (RESEARCH NOTE) | |
| CN106512934A (en) | Adsorbent for advanced treatment on landfill leachate and preparation method thereof | |
| CN109012565A (en) | A kind of method of the magnetic carbon material Adsorption heavy metal ions in wastewater of nitrating | |
| WO2021031516A1 (en) | Passivation method for heavy metal contaminated farmland soil | |
| Chen et al. | Effect of tartaric acid on the adsorption of Pb (Ⅱ) via humin: Kinetics and mechanism | |
| CN111495958A (en) | Contaminated soil remediation method | |
| Tiwari et al. | Biomass‐Derived Materials in the Remediation of Heavy‐Metal Contaminated Water: Removal of Cadmium (II) and Copper (II) from Aqueous Solutions | |
| CN105498685A (en) | Water body heavy metal repairing agent and use method thereof | |
| CN104645932A (en) | Iron and manganese oxide composite modified zeolite as well as preparation method and application thereof | |
| CN106587187A (en) | Preparation method for composite material for micro-polluted water treatment | |
| CN104353407B (en) | A kind of Fe-Mn system adsorbent and methods for making and using same thereof | |
| Romero-González et al. | Determination of equilibrium and kinetic parameters of the adsorption of Cr (III) and Cr (VI) from aqueous solutions to Agave Lechuguilla biomass | |
| CN101803784B (en) | Method for removing heavy metal ions in fruit and vegetable juice by using chelate resin in cooperative treatment | |
| Ekinci Dogan et al. | Biosorption of Au (III) and Cu (II) from Aqueous Solution by a Non‐Living Cetraria Islandica (L.) Ach. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20081119 |