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Bio-fouling reducers for improving the performance of an aerobic submerged membrane bioreactor treating palm oil mill effluent

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Author

  • Adhi Yuniarto
  • Zainura Zainon Noor
  • Zaini Ujang
  • Gustaf Olsson
  • Azmi Aris
  • Tony Hadibarata

Summary, in English

A bench scale aerobic submerged membrane bioreactor (ASMBR) was used to treat diluted palm oil mill effluent (POME). For further improving the effluent quality and reduction of bio-fouling, powdered activated carbon (PAC) and zeolite were used as bio-fouling reducers (BM). We compared the performances of ASMBR without BFR (called BFR0) with ASMBR using BFR, namely 2 g/L PAC (BFR1), 4 g/L PAC (BFR2) and 2 g/L zeolite (BFR3) for a period of about 70 days. Each system with BFR showed distinct performances by producing higher effluent quality as compared with BFR0. On average, the systems with and without BFR removed COD by 97.5-98.5% and 95.2%, respectively. The ASMBR with BFR also produced permeate with average residual color between 16 and 26 Pt-Co, as compared to 80 Pt-Co by BFR0. The addition of BFR increased the critical flux from 20 LMH (BFR0) to 36, 42 and 30 LMH (BFR1, BFR2, and BFR3). Furthermore, the ASMBR systems with BFR formed lower operational trans-membrane pressure (TMP), lowered the concentration of soluble microbial products (SMP) and increased the concentration of EPS. (C) 2013 Elsevier B.V. All rights reserved.

Publishing year

2013

Language

English

Pages

146-153

Publication/Series

Desalination

Volume

316

Document type

Journal article

Publisher

Elsevier

Topic

  • Other Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

  • Aerobic submerged membrane bioreactor
  • Bio-fouling reducer
  • Palm oil
  • mill effluent

Status

Published

ISBN/ISSN/Other

  • ISSN: 1873-4464