Activation of persulphate by heat, pH, and transition metals for removal of COD and colour from biologically treated palm oil mill effluent

Tay Huat Hua*, Augustine Chioma Affam, Wong Chee Chung, Wong Chee Swee, Johnson Olufemi Adebayo

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)
48 Downloads (Pure)


The production of palm oil mill effluent (POME) has caused serious environmental hazards. The most popular treatment for POME is biological treatment (anaerobic digestion method) by adopting the ponding system. Anaerobic sludge solids build-up in the ponding system has been accepted as a feature of anaerobic digestion of POME. While anaerobic digestion is widely accepted as a viable and cost-effective method. For the treatment of POME, anaerobic treatment alone has difficulty meeting the Department of Environment (DOE) Malaysia discharge limits due to the high organic content. Hence, subsequent post-treatment such as advanced oxidation process treatment is vital to meet the discharge limits. The current study evaluated the effectiveness of the combined oxidation method by using heat and transition metal (iron oxide) to activate persulphate as a post-treatment of biologically treated palm oil mill effluent (BIOPOME). The performance was assessed by measuring the efficiency in terms of the removal of chemical oxygen demand (COD) and colour. The maximum removal efficiency per litre of BIOTPOME was 64 - 69% (COD) and 88 - 93% (Colour) at a temperature of 60 C, pH 9, dosage of 2.03 g iron II salt and 1.28 g persulfate. The process was effective to further make the wastewater amenable to discharge in the environment.

Original languageEnglish
Title of host publication6th International Conference on Environment (ICENV 2018)
Subtitle of host publicationEmpowering Environment and Sustainable Engineering Nexus Through Green Technology
EditorsDerek Chan Juinn Chieh
PublisherAIP Publishing
ISBN (Electronic)9780735418646
Publication statusPublished - 24 Jul 2019
Event6th International Conference on Environment 2018 - Penang, Malaysia
Duration: 11 Dec 201813 Dec 2018

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


Conference6th International Conference on Environment 2018
Abbreviated titleICENV 2018

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Plant Science
  • General Physics and Astronomy
  • Nature and Landscape Conservation


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