Long-term effect of pH on short-chain fatty acids accumulation and microbial community in sludge fermentation systems

Bioresource Technology
Yue YuanYongZhen Peng

Abstract

Long-term effect of pH (4, 10, and uncontrolled) on short-chain fatty acid (SCFA) accumulation, microbial community and sludge reduction were investigated in waste activated sludge (WAS) fermentors for over 90days. The average SCFAs accumulation was 1721.4 (at pH 10), 114.2 (at pH 4), and 58.1 (at uncontrolled pH) mg chemical oxygen demand (COD)/L. About 31.65mgCOD/L was produced at pH 10, accounting for 20% of the influent COD. Illumina MiSeq sequencing revealed that Alcaligenes (hydrolic bacteria) and Erysipelothrix (acidogenic bacteria) were enriched at pH 10, while less acidogenic bacteria existed at pH 4 than pH 10, and no acidogenic bacteria were detected at the uncontrolled pH. The ratios of archaea to bacteria were 1:41, 1:16, and 1:9 at the pH of 10, 4, and uncontrolled. This study elucidated the effects of pH on WAS fermentation, and established the correlation of microbial structure with SCFAs accumulations and sludge reduction.

References

Sep 12, 1998·International Journal of Systematic Bacteriology·C HarmsJ R Andreesen
Sep 27, 2003·Water Research·Yuansong WeiYaobo Fan
Dec 8, 2005·Applied and Environmental Microbiology·Romy ChakrabortyJohn D Coates
Sep 22, 2006·Water Research·Yinguang ChenGuowei Gu
Jul 1, 2008·Bioresource Technology·Emine Ubay CokgorDerin Orhon
Jan 30, 2010·Journal of Environmental Sciences (China)·Leiyu FengYinguang Chen
Jan 5, 2011·Bioresource Technology·Michael C NelsonZhongtang Yu
Jul 31, 2012·Applied and Environmental Microbiology·Xiaohui WangKun Ding

❮ Previous
Next ❯

Citations

Jun 2, 2020·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Baodan JinYu Li
Mar 23, 2019·Environmental Science and Pollution Research International·Kun LuoQi Huang
May 22, 2019·Environmental Science and Pollution Research International·Yen-Keong CheahJoan Mata-Álvarez
Dec 15, 2018·Journal of Cosmetic Dermatology·Qian WangCongfen He
Aug 24, 2019·Journal of Animal Physiology and Animal Nutrition·Junqiu LuoDaiwen Chen
Dec 20, 2018·Environmental Science and Pollution Research International·Mengyu ShaoYiding Guo
Jan 8, 2020·International Journal of Environmental Research and Public Health·Mohammed Ali MusaAbdul Malek Abdul Wahab
Jun 4, 2020·Environmental Science and Pollution Research International·Yan KuangYingjie Sun
Feb 9, 2021·Frontiers in Microbiology·Patricia Bovio-WinklerClaudia Etchebehere
May 26, 2021·The Science of the Total Environment·Pingjin YangXuya Peng
Jul 25, 2021·Bioresource Technology·Yuexi ChenYinguang Chen

❮ Previous
Next ❯

Related Concepts

Related Feeds

Actinomycosis

Actinomycosis is a rare, chronic, and slowly progressive granulomatous disease caused by filamentous Gram positive anaerobic bacteria from the Actinomycetaceae family (genus Actinomyces). The disease is characterised by the formation of painful abscesses in the mouth, lungs,breast or gastrointestinal tract. Discover the latest research on actinomycosis here.

Archaeogenetics

Recent advances in genomic sequencing has led to the discovery of new strains of Archaea and shed light on their evolutionary history. Discover the latest research on Archaeogenetics here.