Downstream Processing of Palm Oil Mill Effluent in a CBME Reactor
Publication: Journal of Hazardous, Toxic, and Radioactive Waste
Volume 24, Issue 1
Abstract
This study describes a laboratory-scale continuous-flow bipolar mode electrocoagulation (CBME) unit that was developed as a downstream process unit for polishing an anaerobically treated palm oil mill effluent (POME). The design of the CBME reactor has the advantage of achieving good treatment efficiency with lesser energy consumption when compared to monopolar electrocoagulation systems. The process optimization was carried out for maximum removal of total organic carbon (TOC) and total phosphorus (TP) using response surface methodology (RSM). The independent process variables selected are initial pH, retention time (RT), reaction area (RA), and current density (CD). The optimum condition was achieved when pH was set at 6.4, retention time at 7.7 min, reaction (electrode) area at 765 cm2, and current density at . Under this condition, 77% and 73% of TOC and TP removals were observed, respectively. The ratio of the total surface area of electrodes to the volume of the reactor was found to be at the optimum operating condition. The energy consumption at the optimum point was of wastewater treated. Micropollutants were screened for the organic constituents present before and after the treatment using high-resolution mass spectroscopy (HRMS).
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Data Availability Statement
All data, models, and code generated or used during the study appear in the submitted article.
Acknowledgments
This study was partly funded by the Ministry of Human Resource Development, India, through the Frontier Areas of Science and Technology (FAST) program, and partly by Rahyals Envergy India Pvt Ltd. We thank Mr. Prashant Joseph, Application Engineer-LCMS from Agilent Technologies India Pvt Ltd. for extending his support in LC-HRMS analysis.
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Journal of Hazardous, Toxic, and Radioactive Waste
Volume 24 • Issue 1 • January 2020
Copyright
©2019 American Society of Civil Engineers.
History
Received: Feb 12, 2019
Accepted: Aug 6, 2019
Published online: Oct 28, 2019
Published in print: Jan 1, 2020
Discussion open until: Mar 28, 2020
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