Redox zones stratification and the microbial community characteristics in a periphyton bioreactor

Junzhuo Liu, Wei Liu, Fengwu Wang, Philip Kerr, Yonghong Wu

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Bioremediation techniques based on microorganisms have been widely applied to treat polluted surface water, but the efficiencies have been limited, especially in deep and static waters. Microbial aggregates, known as periphyton, were introduced into a tank bioreactor to improve pollutants removal and a periphyton bioreactor with an 84 cm column was built to investigate microbe'wastewater interactions. Periphyton greatly improved water quality and produced a distinct stratification in the water column into five redox zones with slight overlaps. From top to bottom these were: oxygen reduction, nitrate reduction, iron reduction, sulfate reduction and methanogenic zone. Periphyton communities had high species diversities (767'947 OTUs) with the facultative zone (middle layer) having higher species richness and functional diversity than the aerobic (top layer) and anaerobic zones (bottom layer). A good knowledge of interactions between periphyton and water column stratification could benefit from integration of periphyton to improve bioremediation of deep and static water.
Original languageEnglish
Pages (from-to)114-121
Number of pages8
JournalBioresource Technology
Volume204
DOIs
Publication statusPublished - Mar 2016

Fingerprint Dive into the research topics of 'Redox zones stratification and the microbial community characteristics in a periphyton bioreactor'. Together they form a unique fingerprint.

  • Cite this