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Removal of nutrients and organic pollutants from household greywater by phycoremediation for safe disposal

Mohamed, R. M. and Al-Gheethi, A. A. and Aznin, S. S. and Hasila, A. H. and Wurochekke, A. A. and Kassim, A. H. (2017) Removal of nutrients and organic pollutants from household greywater by phycoremediation for safe disposal. International Journal of Energy and Environmental Engineering, 8 (3). pp. 259-272. ISSN 22516832


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The present study aimed to investigate the potential for application of phycoremediation system using Botryococcus sp. for the treatment of bathroom greywater at village houses. The greywater samples were obtained from four houses. The treatment system was conducted at ambient temperature for 21 days. Botryococcus sp. (Accession No. JQ585723.1) was inoculated into the greywater in a dry mass (0.3 mg L-1). The results revealed high effectiveness of the treatment system. The maximum reduction of biological oxygen demand (BOD5) from four types of greywater ranged from 85.3 to 98%, while was between 71.22 and 85.47% for chemical oxygen demand (COD) after 21 days. The reduction of nitrate (NO3 -) appeared rapidly within 18 days of the treatment period with 98% of the reduction efficiency. Reduction of ammonia (NH3) and orthophosphate (PO43-) was recorded after 21 days with the efficiency ranged from 86.21 to 99 and 39.12 to 99.3%, respectively. The high removal percentage of potassium (K) (97%) recorded within 3 days, while calcium (Ca) reduction (95%) was noted at the end of the treatment period indicating the high applicability of phycoremediation system to be used in the village houses. Moreover, the system is easily implementable, very low cost where no energy is required, eco-friendly and has no toxic by-products.

Item Type: Article
Uncontrolled Keywords: BOD5; COD; nutrients; elements; growth rate; Malaysia
Subjects: T Technology > TD Environmental technology. Sanitary engineering > TD201-500 Water supply for domestic and industrial purposes
Divisions: Faculty of Civil and Environmental Engineering > Department of Water and Environmental Engineering
Depositing User: Mr. Mohammad Shaifulrip Ithnin
Date Deposited: 13 Aug 2018 03:13
Last Modified: 13 Aug 2018 03:13
URI: http://eprints.uthm.edu.my/id/eprint/10285
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