Electrocoagulation (EC) technology for wastewater treatment and pollutants removal

Islam, Shakibul

doi:10.1007/s40899-017-0152-1

Cited by 90 publications

(19 citation statements)

References 222 publications

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“…The coded and actual values and ranges for each independent variable for both processes are shown in Table 4 . By referring to the literature 21 , 48 and well-established preliminary studies, the lower and upper limits are fixed.…”

Section: Methodsmentioning

confidence: 99%

Comparative Study of Chemical Coagulation and Electrocoagulation for the Treatment of Real Textile Wastewater: Optimization and Operating Cost Estimation

et al. 2022

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Pollutants derived from real textile wastewater present a high environmental risk. This work involves the study of the removal of chemical oxygen demand (COD), color, and turbidity from Tunisian real textile wastewater by two different water treatment technologies: chemical coagulation (CC) and electrocoagulation (EC). A comparative study between these two methods was conducted based on the separation performance and operating cost (OC). The effects of different operational parameters including electrolysis time ( t ), voltage, and pH for EC and the coagulant concentration, initial pH, and time of slow mixing ( t sm ) for CC were studied using response surface methodology. The developed quadratic models for the responses were in good agreement with the experimental data. The experiments proved the efficiency of both chemical and electrochemical techniques for the treatment of textile effluent. Indeed, by using EC, the reduction efficiencies of COD, color, and turbidity were 63.05, 99.07, and 96.31%, respectively, under optimal conditions (pH 9, t = 36.26 min, and voltage 4 V). For CC treatment, the achieved removal efficiencies of COD, color, and turbidity were 54.02, 96.21, and 93.7%, respectively, at pH 8.57, a coagulant concentration of 204.75 mg/L, and a t sm of 28.41 min as optimal operating conditions. The OC obtained for EC and CC was about 0.47 and 0.2 USD/m 3 , respectively. Even if the OC of the EC process was higher as compared to the CC process, the treated water obtained by EC meets the Tunisian Standards (NT 106.03 and NT 09-14) for textile wastewater discharge into the environment and demonstrates a high potential for its reuse in various industrial activities. EC technology can be integrated into a wastewater management system that ensures a zero liquid discharge of wastewater into the environment.

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Section: Methodsmentioning

confidence: 99%

Comparative Study of Chemical Coagulation and Electrocoagulation for the Treatment of Real Textile Wastewater: Optimization and Operating Cost Estimation

et al. 2022

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“…The performance and treatment efficiency of an EC process depend on the choice of electrode material, which depends on the cost-effectiveness, and availability of the electrode material (Sahu et al 2014). Various electrode materials have been used in the EC process, i.e., aluminium, iron, steel, copper, zinc, graphite, and many others (Asselin et al 2008a;Budiyono & Seno 2010;Zarei et al 2018;Islam 2019;Meiramkulova et al 2020b). Among them, aluminium or iron electrodes have been reported to be very successful for wastewater treatment, iron is preferred, because it is relatively cheaper than aluminium (Zaied et al 2020).…”

Section: Materials Of Electrodementioning

confidence: 99%

Treatment of poultry slaughterhouse wastewater using electrocoagulation: a review

Ngobeni

Basitere

Thole

2021

Water Practice and Technology

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Poultry slaughterhouses are generally large consumers of fresh water, which is exhausted as wastewater characterized by a high concentration of biological oxygen demand (BOD), chemical oxygen demand COD, and fats, oil, and grease (FOG). Cost-effective methods are required for the treatment of poultry slaughterhouse wastewater, with the aim of attaining a high quality effluent that can be reused in industrial processes to promote sustainability. As compared to conventional treatment methods, electrocoagulation is an efficient and low-cost system. Electrocoagulation is environmentally friendly, treating wastewater without the need of chemicals, thus limiting secondary pollution. The metal anodes initiate electrochemical reactions for coagulation and flocculation. Its distinct advantages include compact installation and simple operation. This paper offers a comprehensive review of recent literature that has been dedicated to utilizing electrocoagulation for poultry slaughterhouse wastewater treatment. This paper also examines aspects such as theory, potential applications, current applications, as well as economical assessment of the technique.

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“…This method is a better alternative to remove As and F from drinking water as it lowers the sludge volume and it has some advantages such as high flow rates and trouble‐free operation without the use of chemicals (Zhu, Zhao, & Ni, ; Zuo, Chen, Li, & Chen, ; Lakshmanan, Clifford, & Samanta, ; Kobya et al, ; Zhao, Zhang, Liu, & Qu, ). This process depends on the pH, initial concentration, number, conductivity of the water, current density and electrolysis time (Ali, Khan, & Asim, ; Banerji & Chaudhari, ; Islam, ; Kobya et al, ). Owing to low cost and ease of using at domestic scale, this technique has become very popular.…”

Section: Removal Of Arsenic and Fluoride From Contaminated Water/raw mentioning

confidence: 99%

Environmental exposure of arsenic and fluoride and their combined toxicity: A recent update

Mondal

Chattopadhyay

2019

J of Applied Toxicology

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Environmental exposure to arsenic (As) and fluoride (F) in the recent year has been increased because of excessive use of naturally contaminated ground water.Surface water is also regularly contaminated with these elements in various industrial areas. Arsenicosis and fluorosis upon individual exposure of As and F are reported in many studies. A syndrome of endemic As poisoning and fluorosis occurs during concurrent exposure of As and F. Previous reports showed synergistic, antagonistic and independent effects of these two compounds, although few recent reports also revealed antagonistic effects after co-exposure. Interaction during intestinal absorption and influence of F on As metabolism might be the cause of antagonism. The synergism/antagonism is thought to depend on the dose and duration of the co-exposure. However, the detailed mechanism is still not fully understood and needs further studies. Removal technologies of As and F from contaminated water is available but removal of such contaminants from food is yet to be developed. Antioxidants are useful to mitigate the toxic effects of As and F. This review focused on the effect of co-exposure, amelioration as well as removal techniques of As and F. K E Y W O R D Samelioration, arsenic, co-exposure, fluoride, mixture effect, removal technology

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Electrocoagulation (EC) technology for wastewater treatment and pollutants removal

Cited by 90 publications

References 222 publications

Comparative Study of Chemical Coagulation and Electrocoagulation for the Treatment of Real Textile Wastewater: Optimization and Operating Cost Estimation

Comparative Study of Chemical Coagulation and Electrocoagulation for the Treatment of Real Textile Wastewater: Optimization and Operating Cost Estimation

Treatment of poultry slaughterhouse wastewater using electrocoagulation: a review

Environmental exposure of arsenic and fluoride and their combined toxicity: A recent update

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