Municipal waste water treatment by natural coagulant assisted electrochemical technique-Parametric effects

被引：22
作者：
Natarajan, Rajamohan [1 ]
Al Fazari, Fatma [1 ]
Al Saadi, Amal [2 ]
机构：
[1] Sohar Univ, Fac Engn, Chem Engn Sect, Sohar, Oman
[2] Sohar Municipal, Diwan Royal Court, Sohar, Oman
来源：
ENVIRONMENTAL TECHNOLOGY & INNOVATION | 2018年 / 10卷
关键词：
Dye; Effluent; Modeling; Kinetics; ELECTROCOAGULATION; ALUMINUM; SLUDGE;
D O I：
10.1016/j.eti.2018.01.011
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
Municipal waste water treatment was investigated in an electrocoagulation reactor employing a novel natural coagulant synthesized from Pisum sativum. The influence of operating variables, namely, type of electrode (copper, steel and aluminum), effluent pH (3.0-9.0), initial COD of the effluent (190-760 mg/L), coagulant dosage (1.0-6.0 g/L), voltage (10-30 V) and current (1.0-2.0 A) on the COD removal efficiency was investigated. Aluminum electrode proved to be an effective choice for this application and resulted in enhanced flocs formation though aluminum hydroxides. The optimal conditions for better COD removal efficiency were identified as pH 5.0, coagulant dose-4.0 g/L, voltage 20 V and current 1.5 A. An empirical relationship between COD removal efficiency and coagulant dose was proposed (R-2 = 0.966). This research study proved the feasibility of parallel plate electrocoagulation reactor with a natural coagulant as a sustainable method for treating municipal waste water. (C) 2018 Elsevier B.V. All rights reserved.
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收藏
页码：71 / 77
页数：7
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