Effects of heavy metals on methane production in tropical rice soils

Citation
Sr. Mishra et al., Effects of heavy metals on methane production in tropical rice soils, ECOTOX ENV, 44(1), 1999, pp. 129-136
Citations number
33
Categorie Soggetti
Environment/Ecology,"Pharmacology & Toxicology
Journal title
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
ISSN journal
01476513 → ACNP
Volume
44
Issue
1
Year of publication
1999
Pages
129 - 136
Database
ISI
SICI code
0147-6513(199909)44:1<129:EOHMOM>2.0.ZU;2-W
Abstract
In a laboratory incubation study, the effect of select heavy metals on meth ane (CH4) production in three rice soils was investigated under flooded con ditions. Heavy metals behaved differently in their effect on methanogenesis in different soils and methane-producing bacteria. Cd, Cu, and Pb inhibite d CH4 production in all the soils. Zn stimulated CH4 production in the allu vial soil, but inhibited it in laterite and acid sulfate soils. Cr effectiv ely inhibited CH4 production in the alluvial soil, but stimulated it in lat erite and acid sulfate soils. The stimulatory effect of Zn and the inhibito ry effect of Cr on methanogenesis in alluvial soil were attributed to their stimulation or inhibition of methanogenic bacterial population. (C) 1999 A cademic Press.