Pilot plant investigation on petrochemical wastewater treatmentfor the removal of copper and chromium with the objective of reuse

Mirbagheri, Seyed Ahmad; Hosseini, Seyed Nezamedin

doi:10.1016/j.desal.2004.03.022

Cited by 193 publications

(61 citation statements)

References 5 publications

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“…BDD-L, BDD-H, and glassy carbon (GC) were used as a working electrode, and the geometric area in the contact with the electrolyte was 1.72 cm 2 . A Pt plate was used as a counter electrode, and the Ag/AgCl (saturated KCl) was used as a reference electrode.…”

Section: Methodsmentioning

confidence: 99%

Recovery of copper from dilute cupric sulfate solution by electrodeposition method using boron‐doped diamond electrodes

Natsui

Yamaguchi

Einaga

2016

Physica Status Solidi (a)

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The recovery of copper from wastewater is a key issue for environmental and economic aspects. The wastewater treatment containing copper ions has been carried out by various techniques. Among them, the electrodeposition is the “clean” method that is able to achieve the recovery of copper without requiring addition of chemicals and generating sludge or secondary wastes. However, the current efficiency would tend to decrease especially in a dilute solution, because hydrogen evolution and oxygen reduction reaction would occur as competition reaction. In this article, we study on the recovery of copper from dilute cupric sulfate solution as a model wastewater by an electrodeposition method using boron‐doped diamond electrodes which have relatively higher hydrogen overpotential. Two types of boron‐doped diamond electrodes were prepared with different boron doping level. The boron‐doped diamond electrodes could achieve the recovery of copper with higher current efficiency because of inhibiting hydrogen evolution reaction, compared with glassy carbon electrode.

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Section: Methodsmentioning

confidence: 99%

Recovery of copper from dilute cupric sulfate solution by electrodeposition method using boron‐doped diamond electrodes

Natsui

Yamaguchi

Einaga

2016

Physica Status Solidi (a)

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“…Separation of heavy metals such as chromium compounds from petrochemical industries' cooling water wastes was achieved by conversion of hexavalent chromium to trivalent chromium. The maximum conversion occurred in the pH range of 2.0 -2.3, adjusted by ferrous sulfate and sulfuric acid (Mirbagheri and Hosseini, 2004).…”

Section: Introductionmentioning

confidence: 99%

Recovery and reuse of hexavalent chromium from aqueous solutions by a hybrid technique of electrodialysis and ion exchange

Gayathri¹,

Kumar²

2010

Braz. J. Chem. Eng.

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-The chrome plating industry is one of the highly polluting industries whose effluent mainly consists of chromium(VI). This compound is highly toxic to aquatic life and human health. The rinse water constituents reflect the chrome plating bath characteristics; generally dead tank wash water contains about 1% of the plating bath concentration. Other metals and metal compounds usually considered as toxic can be precipitated out by suitably adjusting the pH of the wastewaters. However, Cr(VI) is soluble in almost all pH ranges and therefore an efficient treatment is required for the removal and recovery of chromium, and also for the reuse of wastewaters. The present study aims to recover the chromium by a hybrid technique of electrodialysis and ion exchange for the removal and concentration of chromate ions from the effluent. The different modes of operation like batch recirculation process, batch recirculation process with continuous dipping and continuous process were carried out to remove and recover the chromium from the effluent and the percentage reductions of chromium were found to be 98.69%, 99.18% and 100%, respectively.

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“…Chemical methods include chemical precipitation (hydroxide precipitation, sulfide precipitation, chelating precipitation, and chemical precipitation combined with other methods), ion-exchange, electrochemical treatment technologies, and others [5,154]. Biological methods include bio-adsorbents and use of microorganism, as well as others [156][157][158]. Among them, ion-exchange, adsorption and membrane filtration are the most commonly used method, and use of modified FA is an economical and efficient method for treatment of heavy metal wastewater because FA is derived from industrial waste.…”

Section: Removing Water Pollutantsmentioning

confidence: 99%

Fabrication of Multifunctional Hybrid Composites Using Fly Ash to Control Environmental Pollutants: A Review

Ge¹,

Yoon²,

Choi³

2018

Preprint

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Air pollutants such as volatile organic compounds (VOCs), nitrogen oxides (NOx), sulfur dioxide (SO2), as well as water pollutants including heavy metal, are harmful to human and environment. Effective control and reduction of their pollution is therefore an important topic for today's scientists. Fly ash (FA) is a type of industrial waste that can cause multiple environmental problems if discharged into the air. On the other hand, because of its high porosity, large specific surface area, and other unique characteristics, the FA can also be used as a low-cost and high efficient adsorbent with some simple modifications. This paper reviews the effects of FA on treatment of the above air and water pollution based on our research experience over many years, including to the current status of global FA utilization, physicochemical properties, principle of adsorption, and the application direction of FA in the future. It focuses on the use of nanocomposite technology to fabricate functional FA fibrous membranes to adsorb VOCs from air, and treat heavy metal wastewater. This present review first describes the fabrication technology of FA nanocomposites and their mechanism of adsorption VOCs from air. Utilization of nanofiber technology to fabricate multi-functional FA emerging composite materials to mitigate air and water pollution has great potential in the future, especially use of pollutant material to control other pollutants.

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Pilot plant investigation on petrochemical wastewater treatmentfor the removal of copper and chromium with the objective of reuse

Cited by 193 publications

References 5 publications

Recovery of copper from dilute cupric sulfate solution by electrodeposition method using boron‐doped diamond electrodes

Recovery of copper from dilute cupric sulfate solution by electrodeposition method using boron‐doped diamond electrodes

Recovery and reuse of hexavalent chromium from aqueous solutions by a hybrid technique of electrodialysis and ion exchange

Fabrication of Multifunctional Hybrid Composites Using Fly Ash to Control Environmental Pollutants: A Review

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