Effect of extruded activated carbon on bioenergy production from shrimp pond sediment and changing of microbial diversity

Name: Kamonwan Khanthong

keyword: Shrimp Pond Sediment

; Biogas Production

; Extruded Activated Carbon

Abstract: Renewable energy has been interested for replacing fossil fuels nowadays. Biogas is one of promising renewable energy that can be produced during anaerobic digestion process. Shrimp pond sediment is considering as biomass from an agriculture waste in Thailand that had been reported its ability as feedstock for producing biogas as well as using of immobilized media for microbial attachment to improve microbial availability in biogas production. In this study, three different types of materials including extruded activated carbon (EAC), extruded zeolite (EZ) and extruded activated carbon mixed zeolite (EACZ) were investigated as supporter for microbial attachment. In previous study, these materials were submersed in synthetic wastewater that performed in semi-batch reactor for 14 days to investigate the COD removal and biogas production. The analysis was continuing in this project. We found that EAC showed as the most appropriated material due to highest number of colonies on material surface from SEM analysis and DNA concentration. EAC was varied in three different ratios, 3%, 4% and 5% w/w in purpose of yielding bioenergy production using shrimp pond sediment as a substrate. The result showed that EAC digesters accumulated higher H2 concentration than control reactor. Among EAC digesters, increasing of EAC amount resulted in obtaining higher CH4 concentration. However, the control reactor showed higher CH4 production compare to EAC digesters. For microbial diversity analysis, predominant bacteria in shrimp pond sediment after biogas production was Alcaligenaceae family which is identified as methane oxidizing bacteria. Moreover, EAC could increase the number of archaea in the digesters. In term of environmental issue, volume of shrimp sediment per ponds are average 220 m3 that contained 150 tons of solid content. Application of anaerobic digestion for treating shrimp pond sediment can approximately reduce 75 tons of solid content together with producing 113 m3 of biogas per shrimp pond. So, water pollutant can be reduced together with producing renewable energy in a sustainable way.

Burapha University. Library

Address: CHONBURI

Email: buulibrary@buu.ac.th

Name: Yanisa Laoong-thai

Role: Principal advisor

Created: 2017

Modified: 2020-03-05

Issued: 2020-03-05

วิทยานิพนธ์/Thesis

application/pdf

eng

DegreeName: Master of Engineering

Level: Master's Degree

Descipline: Bioengineering

Grantor: Burapha University

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