Removal of arsenic from drinking water by batch and continuous electrocoagulation processes using hybrid Al‐Fe plate electrodes

Kobya, Mehmet; Akyol, Abdurrahman; Demirbaş, E.; Öncel, Mehmet Salim

doi:10.1002/ep.11765

Cited by 81 publications

(22 citation statements)

References 28 publications

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“…Arseniğin toksik ve kanserojenik olması, arsenikle kirlenmiş su kaynaklarını önemli bir çevre sorunu haline getirmektedir [20]. Arsenik dünyanın farklı bölgelerinde toprakta ve suda geniş bir aralıkta bulunmaktadır [21].…”

Section: Arseniğin Varlığı Ve Oluşumuunclassified

Accumulation of arsenic in plants from arsenic contaminated irrigation water

Öztürk¹,

Aslan²,

Demirbaş³

2017

Pamukkale J Eng Sci

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GirişArsenik (As) ile kirlenmiş yeraltı suları içme ve kullanma suyu olarak kullanılmasının yanında, sulama suyu olarak da kullanılmaktadır. As içeren su ile sulanan bitkiler, doğrudan insanlar tarafından tüketilmekte veya bu bitkilerin otcul hayvanlar tarafından tüketilmesi ile besin zinciri yoluyla insanlara ulaşmaktadır. Özellikle As ile kirlenmiş toprak ve yeraltı suyunun bulunduğu bölgelerde yaşayan insanlar arseniği bünyelerine beslenme yoluyla (su, bitki ve hayvansal gıda) almaktadır. En yüksek güvenli As alım seviyesi (içme suyundan ve besinlerden) orta yaştaki bir erkek için 220 mg/gün olarak tanımlanmıştır [1].İçme suyunda, As derişiminin kısıtlanması ile As giderimine yönelik araştırma sayısında artış olmasına rağmen ülkemizde, içme ve kullanma suyu kaynaklarında, As kirliliği araştırmaları oldukça sınırlı sayıdadır. Atropojenik (yapay) yollarla sular, As kirlenmesine maruz kalırken, jeotermal kaynaklı suların kullanımı ile de su kaynaklarında As kirlenmesi belirlenmiştir. Doğal ve yapay yollarla As kirlenmesine maruz kalan toprak ve sulama sularının tarımsal amaçlı kullanımı ve etkileri hakkında ülkemizde çalışma bulunmamaktadır.Hayvan beslenmesinde temel gıda maddeleri olan hayvan yemi ve suyun kalitesi hakkında araştırmalar oldukça sınırlıdır. Hayvansal ürünlerde (et, sakatat ve süt) biriken kirleticiler (özellikle ağır metaller) besin zinciri yoluyla insanlara

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Section: Arseniğin Varlığı Ve Oluşumuunclassified

Accumulation of arsenic in plants from arsenic contaminated irrigation water

Öztürk¹,

Aslan²,

Demirbaş³

2017

Pamukkale J Eng Sci

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“…Generally, separation methods are employed in the arsenic removal process . Most of the treatment technologies are effective in arsenate removal but it is not fully successful in the removal of arsenite . Therefore, it is necessary to oxidize arsenite to arsenate for its effective removal …”

Section: Introductionmentioning

confidence: 99%

Treatment of Arsenite‐Contaminated Water by Electrochemical Advanced Oxidation Processes

et al. 2020

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Arsenite removal from aqueous medium is quite challenging as most of the conventional methods fail to exhibit arsenite removal completely. The present article examines the possibility of electrochemical advanced oxidation processes to remove arsenite from water medium. Anodic oxidation and electro‐Fenton processes failed to remove generated arsenate in the system but found effective to oxidize arsenite completely from its initial concentrations of 1 mg/L and 10 mg/L. Arsenite oxidation is mainly due to in‐situ generated hydrogen peroxide and hydroxyl radicals for anodic oxidation and electro‐Fenton processes. However, peroxicoagulation process was found effective for the oxidation of arsenite as well as removal of arsenic in water. Complete removal of arsenic was observed within 30 min of electrolysis time for pH range in between 3 to 11. Overall, peroxicoagulation is an effective way to remove arsenic from aqueous solution.

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“…Electrocoagulation is an electrochemical technology that is currently gaining scientific and industrial interest due to the wide range of applications in which this process has been proven efficient. It has been successfully applied in the treatment of drinking water, different types of industrial wastewater, urban wastewater and reclaimed wastewater …”

Section: Introductionmentioning

confidence: 99%

Development of a novel electrochemical coagulant dosing unit for water treatment

Llanos

Isidro

Sáez

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND The design of new approaches that help to decrease both the environmental impact of industrial activities and the cost of existing water treatment technologies is becoming a key aspect of research. In the present work, an efficient and easy‐to‐use electrochemical device designed to dose iron coagulants is presented. RESULTS The proposed device (the Electrochemically‐assisted Coagulant – production & dosing Unit, ECU) exhibits an efficient performance in the dosing of coagulants regardless of the ionic conductivity of the water matrixes tested (within the range 100 to 1000 µS cm−1), covering a wide range of potential real surface waters. The behaviour of the ECU device was compared to that of a conventional chemical dosing of iron, and showed better pH (pH ≈ 8 for ECU but < 4 for equivalent chemical dosing) and conductivity (decrease for ECU but increase up to 60% for equivalent chemical dosing) control. Moreover, the ECU unit produced a noticeable amount of Fe2+ ions, due to the limited access of atmospheric oxygen inside the device. CONLUSION The device developed overcomes traditional chemical iron dosing and could be potentially applied in uses different from electrocoagulation, as it is the case of Fenton‐related technologies. © 2018 Society of Chemical Industry

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Removal of arsenic from drinking water by batch and continuous electrocoagulation processes using hybrid Al‐Fe plate electrodes

Cited by 81 publications

References 28 publications

Accumulation of arsenic in plants from arsenic contaminated irrigation water

Accumulation of arsenic in plants from arsenic contaminated irrigation water

Treatment of Arsenite‐Contaminated Water by Electrochemical Advanced Oxidation Processes

Development of a novel electrochemical coagulant dosing unit for water treatment

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