PVA entrapped activated sludge beads coated with PAC for bioremediating 4-chlorophenol-bearing wastewater

  • Jun Wei Lim Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS
  • Kuan-Shiong Khoo Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS
  • Houy-Yng Lam Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS
  • Zhen-Yin Lau Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS
  • Alyna Ong Ching Wuie Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS
  • Anissa Azlan Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS
  • Hoe-Guan Beh Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS

Abstract

This study compared the effectiveness of powdered activated carbon (PAC) to adsorb 4-chlorophenol (4-CP) from wastewater via coated onto and homogenised into polyvinyl alcohol (PVA) bead surface. The bioregeneration of spent PAC for repeated uses via entrapment with 4-CP acclimated biomass of activated sludge was also unveiled. Results showed that the maximum capacity of PAC adsorbing 4-CP was 0.2 g 4-CP/g PAC. It was confirmed that the PAC coated onto bead surfaces with biomass entrapment could be used for 8 cycles with removal efficiency ranging from 80-85%. The removal rate of 4-CP was best fitted by the pseudo-first-order reaction kinetic, permitting plausibly projection to upscale for industrial application in treating wastewater containing chlorophenol more effectively.


Keywords— Activated sludge; adsorption; bioregeneration; PAC coated beads; biomass entrapment; 4-chlorophenol

References

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Published
2019-02-28
How to Cite
LIM, Jun Wei et al. PVA entrapped activated sludge beads coated with PAC for bioremediating 4-chlorophenol-bearing wastewater. International Journal of Biomass and Renewables, [S.l.], v. 7, n. 2, p. 12-17, feb. 2019. ISSN 2289-1692. Available at: <http://gids.mohe.gov.my/index.php/ijbr/article/view/4867>. Date accessed: 17 july 2019.