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Moringa oleifera and strychnos potatorum seeds as natural coagulant compared with synthetic common coagulants in treating car wash wastewater: case study 1

Radin Mohamed, Radin Maya Saphira and Abdul Rahman, Nur faeeza and Mohd Kassim, Amir Hashim (2014) Moringa oleifera and strychnos potatorum seeds as natural coagulant compared with synthetic common coagulants in treating car wash wastewater: case study 1. Asian Journal of Applied Sciences, 2 (5). pp. 693-700. ISSN 2321 – 0893

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Abstract

The present study is aimed to evaluate the efficiency of different types of coagulant; chemical (alum and ferrous sulphate) and natural coagulants Moringa Oleifera and Strychnos Potatorum for treating car wash wastewater. Car wash wastewater samples were collected at Radin Car Wash Parit Raja (geographical coordinates: 1° 52' 0" North, 103° 7' 0" East) during weekdays and weekends in 10 weeks sampling regimes. The coagulants were used to treat car wash effluent and were evaluated with respect to pH, chemical oxygen demand (COD), phosphorus, total suspended solids (TSS) and turbidity.The mixing started with rapid mixing of higher revolutions per minute (rpm) for 10 minutes and followed by the slow mixing at the lowest rpm for 30 minutes. The rotation speed was adjusted while carrying out the test to determine the optimum settling time. The coagulant was finally allowed to settle for 60 minutes. The experiments were started by obtaining the optimum fresh coagulants concentration and initial pH value of the car wash wastewater. The removal efficiency of both natural coagulants was more effective compared to chemical coagulants with low dosage, 40-80mg/L. Moringa Oleifera (94%-Turbidity, 60%-COD, 81%-Phosphorus) and Strychnos Potatorum (97%-Turbidity, 54%-COD, 82%-Phosphorus). Hence, the use of natural coagulants are apparently a better option as they provide better treatment and safe to environment, and the cost is cheaper to common coagulants in water treatment.

Item Type: Article
Uncontrolled Keywords: alum; car wash wastewater; ferrous sulphate; Moringa Oleifera; Strychnos Potatorum
Subjects: T Technology > TD Environmental technology. Sanitary engineering > TD895-899 Industrial and factory sanitation
Divisions: Faculty of Civil and Environmental Engineering > Department of Water and Environmental Engineering
Depositing User: Dr Radin Maya Saphira Radin Mohamed
Date Deposited: 10 Nov 2014 08:28
Last Modified: 10 Nov 2014 08:28
URI: http://eprints.uthm.edu.my/id/eprint/6190
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