Level Decreasing Kinetics Model of Heavy Metal Contents in The Coal Stockpile Wastewater with Electrocoagulation

Rusdianasari, Rusdianasari and Meidinariasty, Anerasari and Purnamasari, Indah (2015) Level Decreasing Kinetics Model of Heavy Metal Contents in The Coal Stockpile Wastewater with Electrocoagulation. International Jounal on Advanced Science Engineering Information Technology, 5 (6). pp. 387-391. ISSN 2088-5334

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Abstract

Electrocoagulation is one of methods used to treat wastewater in the coal stockpile without using coagulants. Characteristics of wastewater observed are heavy metals (Fe and Mn) and pH. The decrease in the heavy metals content and the increase in the pH of this wastewater treatment process will then be proposed in the adsorption kinetics model. The influence of variations in currents and processing time were observed. The time variation of the adsorption process were 60 to 120 minutes with current variations from 1.3 to 3.0 Ampere at a fixed 12 voltages. The results obtained that the Fe content could be decreased to 0.03 ppm at 90 minutes while the content of Mn was decreased to 0.01 ppm at the same time. The increase in pH (7.11) was achieved when applying 2.5 A current at 90 minutes process time. The results obtained from the electrocoagulation method was then proposed in the model of the Langmuir isotherm adsorption kinetics and Freundlich isotherm.

Item Type: Article
Uncontrolled Keywords: Electrocoagulation; coal stockpile; heavy metals; adsorption kinetics
Subjects: Q Science > QD Chemistry
Divisions: Chemical Engineering > Journal
Depositing User: Mrs Trisni Handayani
Date Deposited: 17 Dec 2020 15:06
Last Modified: 17 Dec 2020 15:06
URI: http://eprints.polsri.ac.id/id/eprint/8407

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