Using pig manure to promote fermentation of sugarcane molasses alcohol wastewater and its effects on microbial community structure

Bioresour Technol. 2014 Mar:155:323-9. doi: 10.1016/j.biortech.2013.12.073. Epub 2014 Jan 3.

Abstract

Molasses alcohol wastewater (MAW) is difficult to be bio-treated and converted into biogas. In this study, MAW mixed with pig manure (PM) in different ratios was co-digested. Biogas production, chemical oxygen demand (COD) removal and the structure of microbial communities were monitored in the process. Our results showed that under the optimal COD ratio of PM:MAW (1.0:1.5), CODremoval and biogas yield were the highest. And in fermentation tanks with different PM to MAW ratios, the structure and composition of bacterial communities varied in the early and late stage. Furthermore, the type of main bacterial operational taxonomic units (OTUs) have no differences, yet the relative abundance of OTUs varied. The current research showed that there was a good potential to the use of PM as a co-digested material to anaerobic treatment of MAW and provided references for further improving bio-treatment of MAW.

Keywords: Bacterial community; Biogas; Co-digestion; Molasses alcohol wastewater; Pig manure.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alcohols / analysis*
  • Anaerobiosis
  • Animals
  • Base Sequence
  • Biofuels*
  • Biological Oxygen Demand Analysis
  • Computational Biology
  • DNA Primers / genetics
  • Fermentation
  • Manure / analysis*
  • Manure / microbiology
  • Microbiota / genetics*
  • Molasses / analysis*
  • Molecular Sequence Data
  • Polymerase Chain Reaction
  • Principal Component Analysis
  • RNA, Ribosomal, 18S / genetics
  • Saccharum / chemistry*
  • Sequence Analysis, DNA
  • Swine
  • Wastewater / chemistry*

Substances

  • Alcohols
  • Biofuels
  • DNA Primers
  • Manure
  • RNA, Ribosomal, 18S
  • Waste Water