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Effect of Mercury concentration on P. putida growth in Mercury removal

Abdul Aziz, Mohd Azoddein and R. M., Yunus and Nik Meriam, Nik Sulaiman and Ahmad Bazli, Bustary and Faten Ahada, Mohd Azli and Suzana, Che Sayuti (2017) Effect of Mercury concentration on P. putida growth in Mercury removal. Journal of Applied and Physical Sciences, 3 (3). pp. 107-116. ISSN 2414-3103

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Mercury is a toxic pollutant emitted from industrial sectors to the environment and distributed globally. The potential for biological treatment of industrial wastewater contaminated with mercury was evaluated using Pseudomonas putida (P. putida) under various conditions in a bioreactor. The effect of mercury concentration on the P. putida growth of bacteria and also mercury removal was determined. Modiβications in optimum operating conditions in shake βlask and bioreactor need to be determined so it could bring us to a better result. In this research, optimum conditions for growth of P. putida in shake βlask are identiβied: acclimatization time 24 hours, orbital shaker speed 180rpm, temperature 37°C, pH 7, and nutrient concentration 8g/L. The removal efβiciency obtained is 99% for 1ppb, 99.8% for 6ppb, and 98.6% for 19ppb while for 1000ppb mercury, the removal efβiciency is 92% for 1 hour and 98% for 28 hours. In 2L bioreactor, same condition as shake βlask is applied with agitator speed of 180 rpm and aeration time of 0.50vvm. For 1300ppb and 3000ppb, the removal efβiciency is 89% and 94%, respectively. The βindings of this study can be used as a reference for future application in industrial wastewater treatment plant.

Item Type: Article
Uncontrolled Keywords: Pseudomonas Putida; Mercury Removal; Bacteria Growth; Bioreactor
Subjects: T Technology > TP Chemical technology
Faculty/Division: Faculty of Chemical & Natural Resources Engineering
Depositing User: Noorul Farina Arifin
Date Deposited: 29 Jun 2018 03:29
Last Modified: 29 Jun 2018 03:29
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