Investigation of various gases, pH and redox potential in mushroom composting phase 1 stacks
1991
Miller, F.C. | Macauley, B.J. | Harper, E.R. (La Trobe Univ., Bundoora (Australia), Bundoora (Australia). Dept, of Microbiology)
Gypsum-derived sulfate supported significant microbial activity by sulfate-reducing bacteria in anaerobic core areas. Ammonia concentrations of up to 800 ppm were strongly associated with pH values up to 8.8 in aerobic stack areas. Anaerobic areas had pH values of 5-7, with little or no ammonia. Redox potential generally agreed with oxygenation history, with stacks exhibiting reducing conditions overall and with the potential rising with compost maturity.
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