Heavy metal removal from aqueous solutions by sorption using natural clays from Burkina Faso

Samuel, Pare; Persson, Ingmar; Guel, Boubié; Lundberg, Dan; Zerbo, Lamine; Kam, Sié; Traoré, Karfa

doi:10.5897/ajb11.3735

Cited by 13 publications

(5 citation statements)

References 25 publications

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“…Raw ROU2 clay was proven to efficiently remove copper(II), lead(II) and chromium(III) from aqueous phases, mainly due to the high pH values obtained by the presence of carbonates. The development of several surfactant-modified clay complexes to reduce metal toxicity has therefore sparked greater interest [157]. Potassium butyl dithiophosphate (PBD) has potential as a chelating agent to remove heavy metal.…”

Section: Improvement Strategies For Increasing Biodegradation In Cmentioning

confidence: 99%

Bioavailability of Heavy Metals in Soil: Impact on Microbial Biodegradation of Organic Compounds and Possible Improvement Strategies

Olaniran

Balgobind

Pillay

2013

IJMS

515

197

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Co-contamination of the environment with toxic chlorinated organic and heavy metal pollutants is one of the major problems facing industrialized nations today. Heavy metals may inhibit biodegradation of chlorinated organics by interacting with enzymes directly involved in biodegradation or those involved in general metabolism. Predictions of metal toxicity effects on organic pollutant biodegradation in co-contaminated soil and water environments is difficult since heavy metals may be present in a variety of chemical and physical forms. Recent advances in bioremediation of co-contaminated environments have focussed on the use of metal-resistant bacteria (cell and gene bioaugmentation), treatment amendments, clay minerals and chelating agents to reduce bioavailable heavy metal concentrations. Phytoremediation has also shown promise as an emerging alternative clean-up technology for co-contaminated environments. However, despite various investigations, in both aerobic and anaerobic systems, demonstrating that metal toxicity hampers the biodegradation of the organic component, a paucity of information exists in this area of research. Therefore, in this review, we discuss the problems associated with the degradation of chlorinated organics in co-contaminated environments, owing to metal toxicity and shed light on possible improvement strategies for effective bioremediation of sites co-contaminated with chlorinated organic compounds and heavy metals.

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Section: Improvement Strategies For Increasing Biodegradation In Cmentioning

confidence: 99%

Bioavailability of Heavy Metals in Soil: Impact on Microbial Biodegradation of Organic Compounds and Possible Improvement Strategies

Olaniran

Balgobind

Pillay

2013

IJMS

515

197

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“…All over the world many studies have been conducted on heavy metal sorption using clay mineral [16][17][18][19][20][21][22]. The most important parameters controlling heavy metal adsorption and their distribution between clay and water are clay type, metal speciation, metal concentration, pH, solid/liquid ratio, and contact time [23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Kinetics and equilibrium modeling of lead(II) and chromium(III) ions'' adsorption onto clay from Kono-bowe, Nigeria

Ajemba¹

2014

Turkish J Eng Env Sci

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Abstract:Clay from Kono-bowe, Nigeria, was activated thermally and chemically and used to remove lead(II) and chromium(III) ions from aqueous solution. The effects of adsorption process variables were studied as well as the kinetics and equilibrium of the process. Analysis of the activated samples showed that the surface area, cation exchange capacity, and adsorption performance were positively favored by both activation processes. It was observed that the adsorption rate increased with an increase in temperature, contact time, adsorbent dosage, initial ion concentration, and solution pH values. The pH P ZC of the adsorbents was determined to be 6.5, 7.4, and 7.2, for KBR, KBTA, and KBAA, respectively.It was observed that sample KBAA yielded maximum adsorption efficiency of 99.9% for the removal of chromium(III), and gave maximum adsorption efficiency of 98.7% for lead(II) removal. The results of the kinetics analysis of the adsorption data revealed that adsorption follows pseudo-second-order kinetics. Analysis of the equilibrium data showed that the Langmuir isotherm provided a better fit to the experimental data for KBR, while the Freundlich isotherm fitted the experimental data of KBTA and KBAA. Evaluation of the thermodynamic parameters revealed that the adsorption process is spontaneous and endothermic.

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“…Electrochemical methods [1], sorption [2], extraction and biochemical methods [3] are used to neutralize liquid waste products containing chromium(VI). The reduction of chromium(VI) followed by precipitation of chromium(III) in the form of a water insoluble compound is important among the chemical methods for treating wastewater.…”

Section: Introductionmentioning

confidence: 99%

Influence of lignosulfonic acids on the formation of magnetoactive compound in the redox reaction of iron(II) with chromate-anion

Kuzyakov¹,

Veshnyakov²,

Khabarov³

et al. 2018

IJET

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Chromium and its compounds are widely used in various industries. Wastewater from industrial enterprises using chromium compounds are subject to complete disposal at treatment facilities. The possibility of synthesizing a magnetoactive compound by oxidizing part of Fe(II) cations with chromate-anions in the presence of lignosulfonates was investigated. The magnetic activity was measured on Gouy balance, magnetic characteristics were determined by the magnetic granulometry method. It has been shown that the interaction of Fe(II) cations with chromate-anions passes with the formation of an water soluble intermediate without redox transformations at pH 3.4. Using method of the isomolar series, it was determined that the ratio of chromate-ions and Fe(II) cations in the intermediate is 1:2.33. The intermediate solution is stable for a long time. Synthesized magnetoactive compound samples are ferrimagnets. The use of lignosulfonate and the synthesis with heating can achieve a higher magnetic activity of magnetoactive compound. The optimal lignosulfonate consumption is 0.7 g/g Fe.

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Heavy metal removal from aqueous solutions by sorption using natural clays from Burkina Faso

Cited by 13 publications

References 25 publications

Bioavailability of Heavy Metals in Soil: Impact on Microbial Biodegradation of Organic Compounds and Possible Improvement Strategies

Bioavailability of Heavy Metals in Soil: Impact on Microbial Biodegradation of Organic Compounds and Possible Improvement Strategies

Kinetics and equilibrium modeling of lead(II) and chromium(III) ions'' adsorption onto clay from Kono-bowe, Nigeria

Influence of lignosulfonic acids on the formation of magnetoactive compound in the redox reaction of iron(II) with chromate-anion

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