TY - JOUR
T1 - Field application of biocovers in landfills for methane mitigation
AU - Jung, Hyekyeng
AU - Yun, Jeonghee
AU - Cheol Oh, Kyung
AU - Jeon, Jun Min
AU - Ryu, Hee Wook
AU - Cho, Kyung Suk
N1 - Publisher Copyright:
© 2017, The Korean Society for Microbiology and Biotechnology.
PY - 2017/12
Y1 - 2017/12
N2 - Two pilot-scale biocovers (PBCs) were installed in a landfill, and the methane (CH4 ) concentrations at their inlets and outlets were monitored for 240 days to evaluate the methane removability. Consequently, the packing materials were sampled from the PBCs, and their potential CH4 oxidizing abilities were evaluated in serum vials. The CH4 concentration at the inlet of the biocovers was observed to be in the range of 23.7- 47.9% (average = 41.3%, median = 42.6%). In PBC1, where a mixture of soil, earthworm cast, and compost (7:2:1, v/v) was employed as the packing material, the CH4 removal efficiency was evaluated to be between 60.7-85.5%. In PBC2, which was filled with a mixture of soil, earthworm cast, perlite, and compost (4:2:3:1, v/v), the removal efficiency was evaluated to be between 29.2-78.5%. Although the packing materials had an excellent CH4 oxidizing potential (average oxidation rate for CH4 = 180-199 μg CH4 · g packing material-1 · h-1), CH4 removal efficiency in PBC1 and PBC2 decreased to the range of 0-30% once the packing materials in the PBCs were clogged and channeled. Furthermore, seasonal effects exhibited no significant differences in the CH4 removal efficiency of the biocovers. The results of this study can be used to design and operate real-scale biocovers in landfills to mitigate CH4 buildup.
AB - Two pilot-scale biocovers (PBCs) were installed in a landfill, and the methane (CH4 ) concentrations at their inlets and outlets were monitored for 240 days to evaluate the methane removability. Consequently, the packing materials were sampled from the PBCs, and their potential CH4 oxidizing abilities were evaluated in serum vials. The CH4 concentration at the inlet of the biocovers was observed to be in the range of 23.7- 47.9% (average = 41.3%, median = 42.6%). In PBC1, where a mixture of soil, earthworm cast, and compost (7:2:1, v/v) was employed as the packing material, the CH4 removal efficiency was evaluated to be between 60.7-85.5%. In PBC2, which was filled with a mixture of soil, earthworm cast, perlite, and compost (4:2:3:1, v/v), the removal efficiency was evaluated to be between 29.2-78.5%. Although the packing materials had an excellent CH4 oxidizing potential (average oxidation rate for CH4 = 180-199 μg CH4 · g packing material-1 · h-1), CH4 removal efficiency in PBC1 and PBC2 decreased to the range of 0-30% once the packing materials in the PBCs were clogged and channeled. Furthermore, seasonal effects exhibited no significant differences in the CH4 removal efficiency of the biocovers. The results of this study can be used to design and operate real-scale biocovers in landfills to mitigate CH4 buildup.
KW - Biocover
KW - Landfill
KW - Methane
KW - Methanotroph
KW - Mitigation
UR - http://www.scopus.com/inward/record.url?scp=85040985813&partnerID=8YFLogxK
U2 - 10.4014/mbl.1708.08004
DO - 10.4014/mbl.1708.08004
M3 - Article
AN - SCOPUS:85040985813
VL - 45
SP - 322
EP - 329
JO - Korean Journal of Microbiology and Biotechnology
JF - Korean Journal of Microbiology and Biotechnology
SN - 1598-642X
IS - 4
ER -