CN103030188A - Method of recovering Pb<2+> from electrolytic zinc rinsing waste water by using manganese oxide modified diatomite - Google Patents

Method of recovering Pb<2+> from electrolytic zinc rinsing waste water by using manganese oxide modified diatomite Download PDF

Info

Publication number
CN103030188A
CN103030188A CN2013100002318A CN201310000231A CN103030188A CN 103030188 A CN103030188 A CN 103030188A CN 2013100002318 A CN2013100002318 A CN 2013100002318A CN 201310000231 A CN201310000231 A CN 201310000231A CN 103030188 A CN103030188 A CN 103030188A
Authority
CN
China
Prior art keywords
solution
manganese oxide
minutes
electrolytic zinc
waste water
Prior art date
Application number
CN2013100002318A
Other languages
Chinese (zh)
Inventor
周海妙
解庆林
陈南春
杨利姣
高军
Original Assignee
桂林理工大学
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 桂林理工大学 filed Critical 桂林理工大学
Priority to CN2013100002318A priority Critical patent/CN103030188A/en
Publication of CN103030188A publication Critical patent/CN103030188A/en

Links

Classifications

    • Y02W30/54

Abstract

The invention discloses a method of recovering Pb<2+> from electrolytic zinc rinsing waste water by using manganese oxide modified diatomite. The method comprises the steps that (1), refined purified diatomite is taken, added to an NaOH solution, vibrated at 90-95 DEG C for 100-120 minutes, subjected to upper layer solution removal, added with an MnCl2 solution, placed for 120 minutes after a pH value is adjusted to 1-2 with analytical pure HCl, stirred for 60 minutes, then placed for 24 hours, and subjected to supernate removal; (2), the MnCl2 solution is added to a substance obtained in Step (1), stirred and placed; (3), operational processes in Step (2) are repeated; supernate is removed; the substance is washed to be neutral with pure water; centrifugation is performed for solid-liquid separation; solid is taken, dried and smashed; the manganese oxide modified diatomite is prepared; and (4), the manganese oxide modified diatomite is added to a 100mL Pb<2+> electrolytic zinc rinsing waste water solution, adsorbed at 25-30 DEG C for 80-85 minutes, subjected to capping, and then vibrated in a rotary water-bath constant-temperature vibrator at 200r/min till adsorption equilibrium is achieved. The method is simple in technology, and the recovery rate of Pb<2+> is high.

Description

The manganese oxide modification infusorial earth reclaims Pb from the electrolytic zinc poaching wastewater 2+Method

Technical field

The present invention relates to a kind ofly from the electrolytic zinc poaching wastewater, reclaim Pb with the manganese oxide modification infusorial earth 2+Method.

Background technology

Contain heavy metal Pb 2+Waste water be mainly derived from the percolate of metallurgy, plating, battery and solid refuse landfill yard.The discharge of wastewater of heavy metal ion can only change its form or is transferred, dilutes and accumulate in environment, but can not be degraded, thereby very harmful.Lead and compound thereof can damage large mesencephalic centre and peripheral nervous system, initiation myocardial damage, affect digestive system function all toxic effects of a lot of systems of human body.

Diatomite is a kind of biogenic silicastone, main by the diatoms remains through the fixed placer deposits that forms of silication.But natural diatomite adsorption capacity is little, often needs diatomite is carried out modification.Therefore, research adopts the manganese oxide with adsorptive power to diatomite modified, and research manganese oxide modification infusorial earth is to heavy metal ion Pb 2+Recovery.

From the electrolytic zinc poaching wastewater, reclaim Pb 2+, improve the rate of recovery, effectively utilize the Mineral resources of China, to the recovery of valuable metal, similarly the research of design of new processes and exploitation has very major and immediate significance, has many benefits in technology, science and industrial economy.Also meet simultaneously the current national industry policy.

Summary of the invention

The present invention relates to a kind ofly from the electrolytic zinc poaching wastewater, reclaim Pb with the manganese oxide modification infusorial earth 2+Method.

Concrete steps are:

(1) get the rear diatomite essence of 14-16g purification soil and join in the NaOH solution that 50 mL concentration are 4-4.2mol/L, vibration is 100-120 minute under 90-95 ℃ of temperature, then removes upper solution, adds the MnCl that 100mL concentration is 2-2.1mol/L again 2Solution is transferred pH to 1-2 with analytical pure HCl, leaves standstill 120 minutes, stirs 60 minutes, then leaves standstill 24 hours, removes supernatant liquor.

(2) adding 25mL concentration in step (1) gains is the MnCl of 2-2.1mol/L 2Solution stirring leaves standstill.

(3) supernatant liquor is removed in repeating step (2) operating process, and is extremely neutral with the pure water washing again, and the centrifugal solid-liquid separation that makes is got solid 105 ℃ of lower oven dry, pulverizes 200 mesh sieves, prepares sorbent material manganese oxide modification infusorial earth.

(4) with the sorbent material manganese oxide modification infusorial earth of 0.05-0.15g step (3) gained, put into 250mL tool plug Erlenmeyer flask, add 100mL and contain Pb 2+Electrolytic zinc poaching wastewater solution, adsorption time 80-85 minute, waste water solution initial pH value 3-3.5, adsorption temp 25-30 ℃, after adding a cover in the Clothoid type water-bath constant temperature oscillator with the speed oscillation of 200r/min to adsorption equilibrium.

Then use 0.45 μ m membrane filtration in the 10mL centrifuge tube, measure Pb in the filtrate with atomic absorption spectrophotometry 2+Mass concentration, Pb 2+The rate of recovery reach 94-97%.

Technique of the present invention is simple, Pb 2+The rate of recovery high, effectively utilize the Mineral resources of China, to the recovery of valuable metal, similarly the research of design of new processes and exploitation has very major and immediate significance, has many benefits in technology, science and industrial economy.Also meet simultaneously the current national industry policy.

Description of drawings

Fig. 1 is embodiment of the invention diatomite essence soil.

Fig. 2 is embodiment of the invention manganese oxide modification infusorial earth.

Embodiment

Embodiment:

(1) get the rear diatomite essence of 15g purification soil and join in the NaOH solution that 50 mL concentration are 4mol/L, vibration is 100 minutes under 90 ℃ of temperature, then removes upper solution, adds the MnCl that 100mL concentration is 2mol/L again 2Solution is transferred pH to 1.5 with analytical pure HCl, leaves standstill 120 minutes, stirs 60 minutes, then leaves standstill 24 hours, removes supernatant liquor.

(2) adding 25mL concentration in step (1) gains is the MnCl of 2mol/L 2Solution stirring leaves standstill.

(3) supernatant liquor is removed in repeating step (2) operating process, and is extremely neutral with the pure water washing again, and the centrifugal solid-liquid separation that makes is got solid 105 ℃ of lower oven dry, pulverizes 200 mesh sieves, prepares sorbent material manganese oxide modification infusorial earth.

(4) with the sorbent material manganese oxide modification infusorial earth of 0.1g step (3) gained, put into 250mL tool plug Erlenmeyer flask, add 100mL and contain Pb 2+Electrolytic zinc poaching wastewater solution, adsorption time 85 minutes, waste water solution initial pH value 3.5,25 ℃ of adsorption temps, after adding a cover in the Clothoid type water-bath constant temperature oscillator with the speed oscillation of 200r/min to adsorption equilibrium.

Then use 0.45 μ m membrane filtration in the 10mL centrifuge tube, measure Pb in the filtrate with atomic absorption spectrophotometry 2+Mass concentration.Pb 2+Rate of recovery rate reach 96%.

Claims (1)

1. one kind is reclaimed Pb with the manganese oxide modification infusorial earth from the electrolytic zinc poaching wastewater 2+Method, it is characterized in that concrete steps are:
(1) get the rear diatomite essence of 14-16g purification soil and join in the NaOH solution that 50 mL concentration are 4-4.2mol/L, vibration is 100-120 minute under 90-95 ℃ of temperature, then removes upper solution, adds the MnCl that 100mL concentration is 2-2.1mol/L again 2Solution is transferred pH to 1-2 with analytical pure HCl, leaves standstill 120 minutes, stirs 60 minutes, then leaves standstill 24 hours, removes supernatant liquor;
(2) adding 25mL concentration in step (1) gains is the MnCl of 2-2.1mol/L 2Solution stirring leaves standstill;
(3) supernatant liquor is removed in repeating step (2) operating process, and is extremely neutral with the pure water washing again, and the centrifugal solid-liquid separation that makes is got solid 105 ℃ of lower oven dry, pulverizes 200 mesh sieves, prepares sorbent material manganese oxide modification infusorial earth;
(4) with the sorbent material manganese oxide modification infusorial earth of 0.05-0.15g step (3) gained, put into 250mL tool plug Erlenmeyer flask, add 100mL and contain Pb 2+Electrolytic zinc poaching wastewater solution, adsorption time 80-85 minute, waste water solution initial pH value 3-3.5, adsorption temp 25-30 ℃, after adding a cover in the Clothoid type water-bath constant temperature oscillator with the speed oscillation of 200r/min to adsorption equilibrium.
CN2013100002318A 2013-01-02 2013-01-02 Method of recovering Pb<2+> from electrolytic zinc rinsing waste water by using manganese oxide modified diatomite CN103030188A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013100002318A CN103030188A (en) 2013-01-02 2013-01-02 Method of recovering Pb<2+> from electrolytic zinc rinsing waste water by using manganese oxide modified diatomite

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013100002318A CN103030188A (en) 2013-01-02 2013-01-02 Method of recovering Pb<2+> from electrolytic zinc rinsing waste water by using manganese oxide modified diatomite

Publications (1)

Publication Number Publication Date
CN103030188A true CN103030188A (en) 2013-04-10

Family

ID=48017648

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2013100002318A CN103030188A (en) 2013-01-02 2013-01-02 Method of recovering Pb<2+> from electrolytic zinc rinsing waste water by using manganese oxide modified diatomite

Country Status (1)

Country Link
CN (1) CN103030188A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105195088A (en) * 2015-10-19 2015-12-30 桂林理工大学 Method for preparing adsorbent for adsorbing trivalent chromium by using diatom zeolite through manganese oxide compound modification
CN105289544A (en) * 2015-11-22 2016-02-03 桂林理工大学 Preparation method of adsorbent for removing As<5+>
CN107841629A (en) * 2017-11-07 2018-03-27 长沙埃比林环保科技有限公司 A kind of method of porous mineral processing lead waste water

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2187459C2 (en) * 2000-10-19 2002-08-20 Тюменская государственная архитектурно-строительная академия Method of adsorption treatment of waste waters to remove petroleum products and metal ions
CN1673109A (en) * 2005-02-28 2005-09-28 林金画 Recipe and prepn process of modified diatomite for treating waste water
CN101024160A (en) * 2006-02-21 2007-08-29 中国科学院生态环境研究中心 Preparation of iron-managanese compounded oxide/diatomite adsorbant, its using and regenerating method
CN102698711A (en) * 2012-06-08 2012-10-03 中南林业科技大学 Pillared modified kieselguhr for adsorbing Pb<2+> and/or Cd<2+> and preparation method and application of pillared modified kieselguhr

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2187459C2 (en) * 2000-10-19 2002-08-20 Тюменская государственная архитектурно-строительная академия Method of adsorption treatment of waste waters to remove petroleum products and metal ions
CN1673109A (en) * 2005-02-28 2005-09-28 林金画 Recipe and prepn process of modified diatomite for treating waste water
CN101024160A (en) * 2006-02-21 2007-08-29 中国科学院生态环境研究中心 Preparation of iron-managanese compounded oxide/diatomite adsorbant, its using and regenerating method
CN102698711A (en) * 2012-06-08 2012-10-03 中南林业科技大学 Pillared modified kieselguhr for adsorbing Pb<2+> and/or Cd<2+> and preparation method and application of pillared modified kieselguhr

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
刘洁等: "硅藻土的研究现状及进展", 《环境科学与管理》 *
郭晓芳等: "改性新型Mn-硅藻土吸附电镀废水中铅锌的研究", 《非金属矿》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105195088A (en) * 2015-10-19 2015-12-30 桂林理工大学 Method for preparing adsorbent for adsorbing trivalent chromium by using diatom zeolite through manganese oxide compound modification
CN105289544A (en) * 2015-11-22 2016-02-03 桂林理工大学 Preparation method of adsorbent for removing As<5+>
CN107841629A (en) * 2017-11-07 2018-03-27 长沙埃比林环保科技有限公司 A kind of method of porous mineral processing lead waste water

Similar Documents

Publication Publication Date Title
Jung et al. Fabrication of porosity-enhanced MgO/biochar for removal of phosphate from aqueous solution: application of a novel combined electrochemical modification method
Bhalara et al. A review of potential remediation techniques for uranium (VI) ion retrieval from contaminated aqueous environment
Cui et al. Removal of phosphate from aqueous solution using magnesium-alginate/chitosan modified biochar microspheres derived from Thalia dealbata
Anastopoulos et al. Adsorption of rare earth metals: A review of recent literature
Ho et al. Lead removal by a magnetic biochar derived from persulfate-ZVI treated sludge together with one-pot pyrolysis
Kariuki et al. Biosorption studies of lead and copper using rogers mushroom biomass ‘Lepiota hystrix’
Cutillas-Barreiro et al. Pine bark as bio-adsorbent for Cd, Cu, Ni, Pb and Zn: batch-type and stirred flow chamber experiments
Syed Recovery of gold from secondary sources—A review
Ahmaruzzaman et al. Rice husk and its ash as low-cost adsorbents in water and wastewater treatment
Mohan et al. Removal of hexavalent chromium from aqueous solution using low-cost activated carbons derived from agricultural waste materials and activated carbon fabric cloth
Gupta et al. Enhanced heavy metals removal and recovery by mesoporous adsorbent prepared from waste rubber tire
Xie et al. Removal and recovery of phosphate from water by lanthanum hydroxide materials
Alam et al. Extraction of arsenic in a synthetic arsenic-contaminated soil using phosphate
Cruz et al. Kinetic modeling and equilibrium studies during cadmium biosorption by dead Sargassum sp. biomass
CN104475441B (en) A kind of Soil leaching repair system and method thereof concentrating design concept based on decrement
Sharma et al. Ternary biosorption studies of Cd (II), Cr (III) and Ni (II) on shelled Moringa oleifera seeds
Kalavathy et al. Moringa oleifera—A solid phase extractant for the removal of copper, nickel and zinc from aqueous solutions
Ayyappan et al. Removal of Pb (II) from aqueous solution using carbon derived from agricultural wastes
CN104258823B (en) A kind of modified magnetic charcoal sorbing material and application thereof
CN104889149B (en) Ectopic classification leaching repair complete process of arsenic and heavy metal contaminated soil
Kalavathy et al. Comparison of copper adsorption from aqueous solution using modified and unmodified Hevea brasiliensis saw dust
Liu et al. Adsorption of lead (Pb) from aqueous solution with Typha angustifolia biomass modified by SOCl2 activated EDTA
CN106282585B (en) A kind of detoxification classification resource utilization method of domestic garbage incineration flyash
Kalidhasan et al. The journey traversed in the remediation of hexavalent chromium and the road ahead toward greener alternatives—A perspective
Kadirvelu et al. Activated carbon prepared from biomass as adsorbent: elimination of Ni (II) from aqueous solution

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

Application publication date: 20130410