The fate of trace organic contaminants during anaerobic digestion of primary sludge: A pilot scale study

Bioresource Technology
Hop V PhanLong D Nghiem

Abstract

A pilot-scale study was conducted to investigate the fate of trace organic contaminants (TrOCs) during anaerobic digestion of primary sludge. Of the 44 TrOCs monitored, 24 were detected in all primary sludge samples. Phase distribution of TrOCs was correlated well with their hydrophobicity (>67% mass in the solid phase when LogD > 1.5). The pilot-scale anaerobic digester achieved a steady performance with a specific methane yield of 0.39-0.92 L/gVSremoved and methane composition of 63-65% despite considerable variation in the primary sludge. The fate of TrOCs in the aqueous and solid phases was governed by their physicochemical properties. Biotransformation was significant (>83%) for five TrOCs with logD < 1.5 and electron donating functional groups in molecular structure. The remaining TrOCs with logD < 1.5 were persistent and thus accumulated in the aqueous phase. Most TrOCs with logD > 1.5 were poorly removed under anaerobic conditions. Sorption onto the solid phase appears to impede the biodegradation of these TrOCs.

Citations

Jul 2, 2019·Environmental Science. Processes & Impacts·Aasim M AliRoland Kallenborn
Sep 7, 2020·Environmental Science and Pollution Research International·Malgorzata Siwek, Thomas Edgecock
Feb 13, 2021·Environmental Pollution·Rayane Kunert LangbehnHugo Moreira Soares
Feb 8, 2021·Journal of Hazardous Materials·Cristina ÁvilaCristina Postigo
Jan 26, 2021·Environmental Pollution·Monika DubeyAbsar Ahmad Kazmi
Mar 5, 2021·Bioresource Technology·Seyed Mohammad Mirsoleimani AziziBipro Ranjan Dhar
Dec 28, 2019·Journal of Hazardous Materials·Rodrigo B CarneiroJuan M Lema
Jul 30, 2020·Journal of Environmental Management·Jing JiXiangkai Li
Jul 2, 2021·Water Environment Research : a Research Publication of the Water Environment Federation·Lisann Hammer, Laurence Palmowski

❮ Previous
Next ❯

Related Concepts

Related Feeds

Bioremediation (ASM)

Bioremediation is the treatment and removal of harmful pollutants or contaminants through the use of microorganisms. Discover the latest research here.