Removal of trace organic contaminants by a membrane bioreactor-granular activated carbon (MBR -GAC) system

Authors

Luong N. Nguyen, University of WollongongFollow
Faisal I. Hai, University of WollongongFollow
Jinguo Kang, University of WollongongFollow
William E. Price, University of WollongongFollow
Long Nghiem, University of WollongongFollow

RIS ID

54690

Publication Details

Nguyen, L. N., Hai, F. I., Kang, J., Price, W. E. & Nghiem, L. D. (2012). Removal of trace organic contaminants by a membrane bioreactor-granular activated carbon (MBR -GAC) system. Bioresource Technology, 113 169-173.

Abstract

The removal of trace organics by a membrane bioreactor–granular activated carbon (MBR–GAC) integrated system were investigated. The results confirmed that MBR treatment can be effective for the removal of hydrophobic (logD > 3.2) and readily biodegradable trace organics. The data also highlighted the limitation of MBR in removing hydrophilic and persistent compounds (e.g. carbamazepine, diclofenac, and fenoprop) and that GAC could complement MBR very well as a post-treatment process. The MBR– GAC system showed high removal of all selected trace organics including those that are hydrophilic and persistent to biological degradation at up to 406 bed volumes (BV). However, over an extended period, breakthrough of diclofenac was observed after 7320 BV. This suggests that strict monitoring should be applied over the lifetime of the GAC column to detect the breakthrough of hydrophilic and persistent compounds which have low removal by MBR treatment.