Pretreated Palm Oil Mill Effluent (POME) Digestion in an Up-Flow Anaerobic Sludge Fixed Film Bioreactor: a Comparative Study

Publish Year: 1385
نوع سند: مقاله ژورنالی
زبان: English
View: 181

This Paper With 9 Page And PDF Format Ready To Download

  • Certificate
  • من نویسنده این مقاله هستم

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این Paper:

شناسه ملی سند علمی:

JR_IJE-19-2_001

تاریخ نمایه سازی: 20 اسفند 1400

Abstract:

An up-flow anaerobic sludge fixed film (UASFF) bioreactor was used to treat the pretreated palm oil mill effluent (POME). In physical pretreatment, POME was pre-settled for ۲ h and the supernatant was fed into the reactor. In chemical pretreatment, optimum dosages of cationic and anionic polymers were used. Experiments of pretreated POME digestion were conducted based on a central composite face-centered design (CCFD) with two independent operating variables, feed flow rate (QF) and up-flow velocity (Vup). The operating variables were varied to cover a wide range of organic loading rate (OLR) from ۳.۸ to ۲۹ g COD/l.d. A stable TCOD removal efficiency of ۸۳.۵% was achieved at the highest QF (۳.۳۱ l/d, corresponding to OLR of ۲۶ g COD/l.d) for pre-settled POME whereas only ۶۲.۲% TCOD removal was achieved with chemically pretreated POME at QF of ۷.۶۳ l/d (corresponding to OLR of ۲۹ g COD/l.d) and that too was coupled with process instability. At comparable OLRs i.e. ۱۶.۹۵ g COD/l.d (QF=۲.۱۶ l/d) for pre-settled POME and ۱۶.۴۲ g COD/l.d (QF=۴.۳۲ l/d) for chemically pretreated POME, the VFA concentrations for the two cases were also similar.

Authors

Ghasem Najafpour

Biochemical & Chemical Engineering, Noshirvani University of Technology, Babol

A. Z. Abdullah

Chemical & Petroleum Engineering, University of Sains Malaysia

M. D. Mashitah

Chemical Engineering, University of Sains Malaysia

A. R. Mohamed

School of Chemical Engineering, Universiti Sains Malaysia

A. A. L. Zinatizadeh

Applied Chemistry, Razi University