Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/17273
ชื่อเรื่อง: Treatment efficiency and greenhouse gas emissions of non-floating and floating bed activated sludge system with acclimatized sludge treating landfill leachate
ผู้แต่ง: Boonnorat J.
Honda R.
Panichnumsin P.
Boonapatcharoen N.
Yenjam N.
Krasaesueb C.
Wachirawat M.
Seemuang-on S.
Jutakanoke R.
Teeka J.
Angthong S.
Prachanurak P.
Keywords: Bacteria
Biochemical engineering
Biogas
Carbon dioxide
Efficiency
Gas emissions
Leachate treatment
Nitrogen oxides
Floating medias
Floating-bed
Greenhouses gas
Hydraulic retention
Landfill leachates
MBBR
N$-2$/O
Retention time
Sponge media
Treatment efficiency
Greenhouse gases
bacterial DNA
biogas
carbon dioxide
dissolved oxygen
methane
nitrogen
nitrous oxide
organic compound
phosphorus
carbon dioxide
methane
nitrous oxide
activated sludge
bioreactor
carbon dioxide
carbon emission
greenhouse gas
landfill
leachate
methane
nitrous oxide
water relations
activated sludge
anaerobic ammonium oxidation
Article
carbon footprint
correlation analysis
exhaust gas
floating bed activated sludge system
hydraulic retention time
landfill leachate
methanogen
microbial community
microbial respiration
Nitrobacter
nitrogen concentration
Nitrospira
non floating bed activated sludge system
nonhuman
nutrient
priority journal
sludge treatment
water quality
greenhouse effect
greenhouse gas
sewage
water pollutant
Bacteria (microorganisms)
Porifera
Carbon Dioxide
Greenhouse Effect
Greenhouse Gases
Methane
Nitrous Oxide
Sewage
Water Pollutants, Chemical
วันที่เผยแพร่: 2021
บทคัดย่อ: This research investigates the treatment efficiency and greenhouse gas (GHG) emissions of non-floating and floating bed AS systems with acclimatized sludge treating landfill leachate. The GHGs under study included carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O). The non-floating and floating bed AS systems were operated in parallel with identical landfill leachate influent under different hydraulic retention time (HRT) conditions (24, 18, and 12 h). The experimental results showed that the treatment efficiency of organic compounds under 24 h HRT of both systems (90 – 98%) were insignificantly different, while the nutrient removal efficiency of both systems were between 54 and 98 %. The treatment efficiency of the floating bed AS system, despite shorter HRT, remained relatively unchanged due to an abundance of effective bacteria residing in the floating media. The CO2 emissions were insignificantly different between both AS systems under all HRT conditions (22 – 26.3 μmol/cm2.min). The CO2 emissions were positively correlated with organic loading but inversely correlated with HRT. The CH4 emissions were positively correlated with HRT (26.3 μmol/cm2.min under 24 h HRT of the floating bed AS system). The N2O emissions were positively correlated with nitrogen loading, and the N2O emissions from the floating bed AS system were lower due to an abundance of N2O-reducing bacteria. The floating media enhanced the biological treatment efficiency while maintaining the bacterial community in the system. However, the floating media promoted CH4 production under anoxic conditions. The originality of this research lies in the use of floating media in the biological treatment system to mitigate GHG emissions, unlike existing research which focused primarily on enhancement of the treatment efficiency. © 2021 Elsevier Ltd
URI: https://ir.swu.ac.th/jspui/handle/123456789/17273
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85102651742&doi=10.1016%2fj.biortech.2021.124952&partnerID=40&md5=61277f39cb9b674f653bd52b4c2fc55f
ISSN: 9608524
Appears in Collections:Scopus 1983-2021

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