Bioaugmentation process of secondary effluents for reduction of pathogens, heavy metals and antibiotics

Adel, Ali Saeed Abduh Algheethi and Radin Mohamed, Radin Maya Saphira and AN, Efaq and I, Norli and Abdullah, Abd Halid and HK, Amir and MO, Ab Kadir (2016) Bioaugmentation process of secondary effluents for reduction of pathogens, heavy metals and antibiotics. Journal of Water and Health, 5. p. 1. ISSN 1477-8920

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Abstract

The study probed into reducing faecal indicators and pathogenic bacteria, heavy metals and β-lactam antibiotics, from four types of secondary effluents by bioaugmentation process, which was conducted with Bacillus subtilis strain at 45 'C. As a result, faecal indicators and pathogenic bacteria were reduced due to the effect of thermal treatment process (45 'C), while the removal of heavy metals and β-lactam antibiotics was performed through the functions of bioaccumulation and biodegradation processes of B. subtilis. Faecal coliform met the guidelines outlined by WHO and U. S. EPA standards after 4 and 16 days, respectively. Salmonella spp. and Staphylococcus aureus were reduced to below the detection limits without renewed growth in the final effluents determined by using a culture-based method. Furthermore, 13.5% and 56.1% of cephalexin had been removed, respectively, from secondary effluents containing 1 g of cephalexin L�1 (secondary effluent 3), as well as 1 g of cephalexin L�1 and 10 mg of Ni2 L�1 (secondary effluent 4) after 16 days. The treatment process, eventually, successfully removed 96.6% and 66.3% of Ni2 ions from the secondary effluents containing 10 mg of Ni2 L�1 (secondary effluent 2) and E4, respectively. The bioaugmentation process improved the quality of secondary effluents.

Item Type:	Article
Uncontrolled Keywords:	Bacillus subtilis 2012WTNC; bioaccumulation; biodegradation; cephalexin; nickel; pathogenic bacteria
Subjects:	T Technology > TD Environmental technology. Sanitary engineering > TD201-500 Water supply for domestic and industrial purposes > TD429.5-480.7 Water purification. Water treatment and conditioning. Saline water conversion
Divisions:	Faculty of Civil Engineering and Built Environment > Department of Civil Engineering : Water and Environmental Engineering
Depositing User:	Mrs. Mashairani Ismail
Date Deposited:	01 Dec 2021 08:28
Last Modified:	01 Dec 2021 08:28
URI:	http://eprints.uthm.edu.my/id/eprint/4262

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