General Information
    • ISSN: 1793-821X (Print)
    • Abbreviated Title: J. Clean Energy Technol.
    • Frequency: Quarterly
    • DOI: 10.18178/JOCET
    • Editor-in-Chief: Prof. Haider F. Abdul Amir
    • Executive Editor: Ms. Jennifer Zeng
    • Abstracting/ Indexing: CNKIElectronic Journals Library, Chemical Abstracts Services (CAS), Ulrich's Periodicals Directory, Google Scholar, ProQuest.
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Universiti Malaysia Sabah, Malaysia.
I would like to express my appreciation to all the reviewers and editors, who have been working
very hard to ensure the quality of the journal. It's my honor to work with such a wonderful team.

JOCET 2014 Vol.2(2): 150-153 ISSN: 1793-821X
DOI: 10.7763/JOCET.2014.V2.111

Phenolic Based Pharmaceutical Contaminated Wastewater Treatment Kinetics by Activated Sludge Process

Sumana Siripattanakul-Ratpukdi
Abstract—This study was to investigate phenolic based pharmaceutical-contaminated wastewater treatment using activated sludge. Activated sludge was grown and acclimated using commercial medium with Chemical Oxygen Demand (COD) of 300 mg/L. Phenol was used as a representative of phenolic based pharmaceuticals. Duplicate batch experiment was operated in horizontal shaker at 150 rpm for 8 hr. The experiment divided into 2 parts: 1) determination of phenol degradation potential by activated sludge at the concentrations of 0-100 mg/L and 2) investigation of phenol-contaminated wastewater treatment efficiency at the phenol concentrations and COD of 0-100 and 200-5,000 mg/L, respectively. COD, phenol and mixed liquored suspended solids (MLSS) were measured hourly. Based on the result from the first part, it was found that the activated sludge could treat phenol at the initial phenol concentrations of 10-100 mg/L for 7% to 100%. Higher phenol concentrations resulted in lower phenol removal efficiencies. From the second part, the activated sludge could treat COD of 23-94% and phenol of 0-98%. The result indicated that both initial phenol concentrations and COD affected wastewater treatment and phenol removal efficiencies. Treatment of wastewater contaminating phenol by the activated sludge followed competitive inhibition kinetic model with Vmax and KI of 220 mg/L/hr and 200 mg/L, respectively. Based on MLSS monitoring, activated sludge well grew during the tests.

Index Terms—Activated sludge, competitive inhibition, phenol, wastewater treatment.

S. Siripattanakul-Ratpukdi is with Department of Environmental Engineering, Faculty of Engineering, Khon Kaen University, Khon Kaen 40002, Thailand and Center of Excellence for Environmental and Hazardous Waste Management, Bangkok 10330, Thailand (e-mail:;


Cite:Sumana Siripattanakul-Ratpukdi, "Phenolic Based Pharmaceutical Contaminated Wastewater Treatment Kinetics by Activated Sludge Process," Journal of Clean Energy Technologies vol. 2, no. 2, pp. 150-153, 2014.

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