Preprint Article Version 1 This version is not peer-reviewed

Removal of COD and Ammonia-Nitrogen by Sawdust/Bentonite Augmented SBR Process

Version 1 : Received: 5 August 2018 / Approved: 6 August 2018 / Online: 6 August 2018 (09:08:31 CEST)

How to cite: Mohajeri, P.; Selamat, M.R.; Hamidi, A.A.; Smith, C. Removal of COD and Ammonia-Nitrogen by Sawdust/Bentonite Augmented SBR Process. Preprints 2018, 2018080103 (doi: 10.20944/preprints201808.0103.v1). Mohajeri, P.; Selamat, M.R.; Hamidi, A.A.; Smith, C. Removal of COD and Ammonia-Nitrogen by Sawdust/Bentonite Augmented SBR Process. Preprints 2018, 2018080103 (doi: 10.20944/preprints201808.0103.v1).

Abstract

Water pollutants removal by biomass adsorbent has been considered innovative and cost effective, thus commendable for application in industrial applications. However, certain important aspects have been overlooked by researchers, namely the efficiency in the operation time and pollutant removal. In this research, landfill leachate samples with organic components were treated using bentonite-enriched with sawdust augmented (SBR) process. By modifying the pH, the sawdust samples were categorized into three: the acidic, the alkaline, and the neutral. To bentonite samples, the pH-adjusted sawdust was added at 10%, 20%, and 30% amounts by mass respectively. At the optimum aeration rate of 7.5 L/min and contact period of 22 h, the treatment achieved 99.28% and 95.41% removal of COD and NH3-N with bentonite respectively.  For both pollutants, in the presence of sawdust, the removal reduced by about 17% with contact period reduced to 2 h which was a considerable achievement.

Subject Areas

ammonia nitrogen; bentonite; COD; RSM; sawdust; SBR

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