Mechanistic model of electrocoagulation process for treating vinasse waste: Effect of initial pH

Syaichurrozi, Iqbal and Sarto, Sarto and Sediawan, Wahyudi Budi and Hidayat, Muslikhin (2020) Mechanistic model of electrocoagulation process for treating vinasse waste: Effect of initial pH. Journal of Environmental Chemical Engineering, 8 (3). ISSN 22133437

Full text not available from this repository. (Request a copy)

Abstract

Electrocoagulation (EC) is widely applied to treat wastewaters. Vinasse is a bioethanol waste containing high Chemical Oxygen Demand (COD) and having low power Hydrogen (pH) level. Application of EC for treating vinasse has been studied by other authors, but development of mechanistic models has not been conducted yet. Because of the complex reactions in EC, building a mechanistic model is very interesting. The effect of initial pH in EC on COD removal of the vinasse was investigated and then the measured data was modeled. In the model, reactions in EC process consisted of adsorption, flocculation, entrapment, sedimentation and flotation. Measured data obtained through experiment included COD, total dissolved Fe, scum and sludge per real time during EC process. Increase in initial pH from 4.35 to 6.00 increased the kinetic constants of k1 (adsorption), ke (entrapment) and ksc (flotation). Furthermore, some mathematical equations between the initial pH and the kinetic constants were successfully founded so that the EC performance for other initial pH (in range of 4.35-6.00) could be predicted. Meanwhile, ratio between removed COD to total operating cost for initial pH of 4.35, 5.00 and 6.00 after EC process for 60min was 0.0570, 0.0506 and 0.0636 g-COD IDR-1 respectively. © 2020 Elsevier Ltd. All rights reserved.

Item Type: Article
Additional Information: Cited by: 25
Uncontrolled Keywords: Chemical oxygen demand; Coagulation; Flotation; Rate constants; Waste treatment; Wastewater treatment; Complex reactions; Dissolved fe; Electro coagulations; Electrocoagulation; Kinetic constant; Mathematical equations; Mechanistic modeling; Mechanistic models; pH effects
Subjects: T Technology > TP Chemical technology
Divisions: Faculty of Engineering > Chemistry Engineering Department
Depositing User: Sri JUNANDI
Date Deposited: 25 Mar 2025 04:13
Last Modified: 25 Mar 2025 04:13
URI: https://ir.lib.ugm.ac.id/id/eprint/14212

Actions (login required)

View Item
View Item