Temperature effects on the methanogenesis enhancement and sulfidogenesis suppression in the UASB treatment of sulfate-rich methanol wastewater

Jiang Wu, Quanli Liu, Bo Feng, Zhe Kong, Bo Jiang, Yu You Li

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

This study aims at investigating that the temperature effects on the overall organics removal capability and the reaction kinetic properties of methanogenesis/sulfidogenesis in anaerobic treatment of sulfate-rich methanol wastewater. A lab-scale upflow anaerobic sludge blanket (UASB) reactor was operated for 285 days treating sulfate-rich methanol wastewater at a temperature range of 17.5–50 °C. The COD/SO4 2− ratio of synthetic wastewater is 0.5. Experimental results indicate that both methanogens and sulfidogens showed lower metabolic activities at 17.5–25 °C. The average chemical oxygen demand (COD) removal efficiencies were higher than 90% at 40–50 °C. During these experimental periods, larger than 85% of influent COD was confirmed to be utilized for methanogenesis, revealing that methanogens prevailed over sulfidogens and dominated significantly in the COD utilization. In contrast, the sulfidogenesis-based COD utilization was effectively limited under the temperature range of 40–50 °C.

Original languageEnglish
Pages (from-to)182-190
Number of pages9
JournalInternational Biodeterioration and Biodegradation
Volume142
DOIs
Publication statusPublished - 2019 Aug

Keywords

  • Methanogenesis enhancement
  • Sulfate-rich methanol wastewater
  • Sulfidogenesis suppression
  • Temperature
  • UASB reactor

ASJC Scopus subject areas

  • Microbiology
  • Biomaterials
  • Waste Management and Disposal

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