PMID- 23178766 OWN - NLM STAT- MEDLINE DCOM- 20130708 LR - 20131121 IS - 1879-1026 (Electronic) IS - 0048-9697 (Linking) VI - 442 DP - 2013 Jan 1 TI - Effect of rainfall on the diurnal variations of CH(4), CO(2), and N(2)O fluxes from a municipal solid waste landfill. PG - 73-6 LID - S0048-9697(12)01323-X [pii] LID - 10.1016/j.scitotenv.2012.10.041 [doi] AB - This paper presents the results of a field investigation into the effect of rainfall on the diurnal variations of CH(4), CO(2), and N(2)O fluxes at three different sites in a landfill. The three sites were all net sources of CH(4), CO(2), and N(2)O emissions ranging from 4.7-796 mg CH(4)-Cm(-2)h(-1), 131-811 mg CO(2)-Cm(-2)h(-1), and 90.6-2,209 mug N(2)O-Nm(-2)h(-1). CH(4) and N(2)O were generated by anaerobic digestion of waste and by nitrification and denitrification in the cover soil, respectively. Installation of an HDPE (High Density Polyethylene) membrane cover at landfill Site 1 was very effective in controlling CH(4) emissions, and the CH(4) fluxes at that site were 40-50 times lower than those at Site 2 and Site 3. For 36 h following a rainfall event, both CH(4) and N(2)O emissions were significantly correlated with moisture content of the cover soil at the two landfill sites without HDPE membrane cover (p<0.05). When CH(4) and N(2)O fluxes were expressed as CO(2)-equivalent (CO(2)-e) emissions, CH(4) emissions dominated in the three gases after rainfall (96.1% CO(2)-e emissions) and could be expressed by the following equation: Y(CH4)=988.7+41.1X((soil moisture content))-32.2X((soil temperature)) (R(2)=0.73, p<0.05). CI - Copyright (c) 2012 Elsevier B.V. All rights reserved. FAU - Zhang, Houhu AU - Zhang H AD - Nanjing Institute of Environmental Sciences of the Ministry of Environmental Protection of P.R. China, Nanjing, Jiangsu 210042, PR China. FAU - Yan, Xiaofei AU - Yan X FAU - Cai, Zucong AU - Cai Z FAU - Zhang, Yi AU - Zhang Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20121121 PL - Netherlands TA - Sci Total Environ JT - The Science of the total environment JID - 0330500 RN - 0 (Air Pollutants) RN - 0 (Solid Waste) RN - 142M471B3J (Carbon Dioxide) RN - K50XQU1029 (Nitrous Oxide) RN - OP0UW79H66 (Methane) SB - IM MH - Air Pollutants/*analysis/chemistry MH - Carbon Dioxide/*analysis/chemistry MH - China MH - Environmental Monitoring MH - Methane/*analysis/chemistry MH - Nitrous Oxide/*analysis/chemistry MH - *Rain MH - *Refuse Disposal MH - Solid Waste/*analysis EDAT- 2012/11/28 06:00 MHDA- 2013/07/09 06:00 CRDT- 2012/11/27 06:00 PHST- 2012/07/30 00:00 [received] PHST- 2012/10/08 00:00 [revised] PHST- 2012/10/09 00:00 [accepted] PHST- 2012/11/27 06:00 [entrez] PHST- 2012/11/28 06:00 [pubmed] PHST- 2013/07/09 06:00 [medline] AID - S0048-9697(12)01323-X [pii] AID - 10.1016/j.scitotenv.2012.10.041 [doi] PST - ppublish SO - Sci Total Environ. 2013 Jan 1;442:73-6. doi: 10.1016/j.scitotenv.2012.10.041. Epub 2012 Nov 21.