Electrochemical treatment of heavy metals (Cu2+, Cr6+, Ni2+) from industrial effluent and modeling of copper reduction

Hunsom, Mali; Pruksathorn, Kejvalee; Damronglerd, Somsak; Vergnes, Hugues; Duverneuil, P.

doi:10.1016/j.watres.2004.10.011

Cited by 216 publications

(101 citation statements)

References 4 publications

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“…Therefore, it becomes necessary to remove metals from wastewater to a feasible extent by an appropriate treatment to control the problem of hazardous metal pollution in the environment. Various improved and innovative methods such as reverse osmosis, precipitation, coagulation, ion exchange, solvent extraction, adsorption, membrane filtration, ultra-filtration and photoreduction have been developed to remove metal pollutants from contaminated water and wastewater (Bailey et al 1999;Barron-Zambrano et al 2002;Chen and Wang 2000;Hunsom et al 2005;Kentish and Stevens 2001;Pacheco et al 2006). Among the above-mentioned processes, adsorption plays a pivotal role in removing metals from the aqueous phase using various biomaterial sorbents, algae (Holan et al 1993), fungi, sugar cane bagasse (Cerino Córdova et al 2011;Peterlene et al 1999), rice husk, wheat barn (Nouri et al 2007), pine bark, olive cake (Doyurum and Celik 2006), coconut husk, chitin (Benguella and Benaissa 2002), ash, activated carbon (Jusoh et al 2007;Onundi et al 2011;Zavvar Mousavi and Seyedi 2011), etc.…”

Section: Introductionmentioning

confidence: 99%

Identification of potential soil adsorbent for the removal of hazardous metals from aqueous phase

Bhakta

Munekage

2012

Int. J. Environ. Sci. Technol.

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The present study attempted to identify the efficient hazardous metal-removing sorbent from specific types of soil, upper and middle layer shirasu, shell fossil, tuff, akadama and kanuma soils of Japan by physicochemical and metal (arsenic, cadmium and lead) removal characterizations. The physico-chemical characteristics of soil were evaluated using X-ray diffraction and scanning electron microscopy with energy dispersive spectroscopy techniques, whereas metal removal properties of soil were characterized by analyzing removal capacity and sorption kinetics of potential metal-removing soils. The chemical characteristics revealed that all soils are prevalently constituted of silicon dioxide (21.83-78.58 %), aluminum oxide (4.13-38 %) and ferrous oxide (0.835-7.7 %), whereas calcium oxide showed the highest percentage (65.36 %) followed by silicon dioxide (21.83 %) in tuff soil. The results demonstrated that arsenic removal efficiency was higher in elevated aluminum oxide-containing akadama (0.00452 mg/L/g/h) and kanuma (0.00225 mg/L/ g/h) soils, whereas cadmium (0.00634 mg/L/g/h) and lead (0.00693 mg/L/g/h) removal efficiencies were maximum in elevated calcium oxide-containing tuff soil. Physicochemical sorption and ion exchange processes are the metal removal mechanisms. The critical appraisal of three metal removal data also clearly revealed cadmium [ lead [ arsenic order of removal efficiency in different soils, except in tuff and akadama soils followed by lead [ cadmium [ arsenic. It clearly signified that each type of soil had a specific metal adsorption affinity which was regulated by the specific chemical composition. It may be concluded that akadama would be potential arsenicremoving and tuff would be efficient cadmium and leadremoving soil sorbents.

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Section: Introductionmentioning

confidence: 99%

Identification of potential soil adsorbent for the removal of hazardous metals from aqueous phase

Bhakta

Munekage

2012

Int. J. Environ. Sci. Technol.

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“…A tremendous amount of research focuses on this area, and many methods have been developed, such as adsorption [10,11], ion exchange [12,13], membrane filtration [14,15], electrochemical precipitation [16,17], reverse osmosis [18,19], and flocculation [20,21]. Among these methods, adsorption is most widely used to remove metal ions from wastewater due to its simple, economical, and highly efficient characteristics [22,23].…”

Section: Introductionmentioning

confidence: 99%

Carbon nanotubes, graphene, and their derivatives for heavy metal removal

Guo

et al. 2017

Adv Compos Hybrid Mater

178

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Carbon nanoadsorbents have attracted tremendous interest for metal ion removal from wastewater due to their extraordinary aspect ratios, surface areas, porosities, and reactivities. However, challenges still exist as they suffer from subpar dispersion and recovery, tending to aggregate, and so on. Thus, significant research efforts focus on modification of these carbon nanomaterials to increase the dispersions and recoveries, while maintaining or even enhancing the desirable properties. This review aims to give an in-depth look at recent and impactful advances in metal ion adsorption applications involving these modified carbon nanostructures. Here, the advanced design and testing of modified carbon nanostructures for metal ion removal are emphasized with comprehensive examples, and various adsorption behaviors and mechanisms are discussed, which are hoped to help the development of more effective adsorbents for water treatment.

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“…Heavy metals in liquid wasted water are usually removed by chemical and electrochemical methods (Kaminari et al, 2007;Hunsom et al, 2005). Thiobacillus ferrooxidans and Thiobacillus thiooxidans are the common micro-organisms used in bio-leaching methods.…”

Section: Introductionmentioning

confidence: 99%

Using microbiological leaching method to remove heavy metals from sludge

Gu¹,

Aikebaier²,

Arefieva³

et al. 2017

Eurasian Journal of Soil Science (Ejss)

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Article Info Received : 13.05.2016 Accepted : 11.07.2016 Microbial leaching is one of the most effective methods to remove heavy metals from sludge. In the conducted researches, the sludge samples were processed with Thiobacillus ferrooxidans and Thiobacillus thiooxidans obtained via cultivation, extraction and purification processes. Heavy metals such as Pb, Cd, Cu and Ni were leached from sludge by Thiobacillus ferrooxidans and Thiobacillus thiooxidans within different substrate concentration and pH value conditions. It is defined that from the point of view of economy and efficiency the optimal concentration of FeSO4.7H2O and sulfur for bio-leaching process was 0.2 g. The leaching rates of heavy metals such as Pb, Cd, Cu and Ni of the same concentration were 74.72%, 81.54%, 70.46% and 77.35% respectively. However, no significant differences depending on the pH value among the leaching rates were defined, even for the pH value of 1.5. Along with the removal of heavy metals from sludge, the organic matter, N, P, K were also leached to some extent. The losing rate of phosphorus was the highest and reached 38.44%. However, the content of organic matter, N, P, K in the processed sludge were higher in comparison with level I of the National Soil Quality Standards of China. Ecological risk of heavy metals in sludge before and after leaching was assessed by Index of Geo-accumulation (Igeo) and comprehensive potential risk (RI). The results of research defined that the content of heavy metals in sludge meets the level of low ecological risk after leaching and their contents is lower in comparison with the National Agricultural Sludge Standard of China. Sludge leached by biological methods is possible to use for treatment for increasing soil fertility.

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Electrochemical treatment of heavy metals (Cu2+, Cr6+, Ni2+) from industrial effluent and modeling of copper reduction

Cited by 216 publications

References 4 publications

Identification of potential soil adsorbent for the removal of hazardous metals from aqueous phase

Identification of potential soil adsorbent for the removal of hazardous metals from aqueous phase

Carbon nanotubes, graphene, and their derivatives for heavy metal removal

Using microbiological leaching method to remove heavy metals from sludge

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