Soil redox and pH effects on methane production in a flooded rice soil

Technical Report · Fri Jan 01 04:00:00 EST 1993

OSTI ID:6055815

Wang, Z P; DeLaune, R D; Masscheleyn, P H; Patrick, W H

Methane formation in soil is a microbiological process controlled by many factors. Of them soil redox potential (Eh) and soil pH are considered as critical controls. A laboratory incubation experiment was conducted to study the critical initiation soil Eh, the optimum soil pH, and the interaction of Eh and pH on methane production. A small decrease in pH resulting from the introduction of acidic materials significantly decreased methane production. However, a slight increase in soil pH (about 0.2 unit higher than the natural soil suspension pH) resulted in an enhancement of methane production by 11-20 percent and 24-25 percent at controlled Eh of -250 mV and -200 mV, respectively. Results suggest that decrease in methane emission could be obtained by a small reduction in soil pH in Crowley soil.

• Research Organization: Louisiana State Univ., Baton Rouge, LA (United States). Wetland Biogeochemistry Inst.
• OSTI ID: 6055815
• Report Number(s): PB-93-222818/XAB
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
090900* -- Biomass Fuels-- Processing-- (1990-)
AGRICULTURE
ALKANES
ANAEROBIC CONDITIONS
BIOASSAY
BIOMASS
CEREALS
CHEMICAL REACTIONS
CHEMISTRY
DATA
ENERGY SOURCES
GRAMINEAE
HYDROCARBONS
INCUBATION
INFORMATION
LILIOPSIDA
MAGNOLIOPHYTA
MATTER
METHANE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC MATTER
OXIDATION
PH VALUE
PLANTS
REDOX POTENTIAL
RENEWABLE ENERGY SOURCES
RICE
SOIL CHEMISTRY
SOILS
STATISTICAL DATA