Open AccessRemoval of organic matter from water using ultrasonic-assisted electrocoagulation method
Author(s) -
Ayat K. Zanki,
Faris Hammoudi Mohammad,
Khalid Hashim,
Magomed Muradov,
Patryk Kot,
Mohanad Mousa Kareem,
Bareq Abdulhadi
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/888/1/012033
Subject(s) - electrocoagulation , wastewater , environmental remediation , organic matter , environmental science , sewage treatment , pollutant , water treatment , pulp and paper industry , aqueous solution , waste management , contamination , materials science , chemistry , environmental engineering , engineering , ecology , organic chemistry , biology
Organic matter (OM) is commonly occur in freshwaters, and it poses a threat for health and environment. For instance, high OM concentrations increase the sludge volume and cost of the treatment process in turn. Remediation of water or wastewater from OM has thus become an important issue for the treatment industry. Electrocoagulation (EC) is one of the preferred techniques of treatment for remediation of water from OM and other polluting chemicals, as it utilises simple and easy to run machines and tools, it requires less working area in comparison with conventional methods, and it is more rapidly pollutant separation than other methods. EC technique could be described by passing an electric current through sacrificial electrodes to produce metal hydroxides that separate dissolved contaminants from aqueous phase. On the other hand, the EC method has a limited efficiency in the treatment of high OM concentrations. The present study is thus intended to develop a new technique that combines an EC reactor with an ultrasound (US) field to remediate water from OM. The EC reactor, in this study, was made from four aluminium plats (500 cm 2 in gross area) and plastic container (1 L in volume). The operation of this combined method was optimised for the effects of key factors, such as the pH of solution, electrodes gapping, and current density. The obtained results proved that the US-EC technique removed 97.50 % of OM after 5.0 minutes of US irradiation, 20 minutes of electrolysing at current density 4.0 mA. cm −2 , initial pH 7 and gap between electrodes 5.0 mm.