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Publication Metadata only Effects of Inorganic Ions and Glucose on Hydrogen Production by Indigenous Microbes in Sewage Sludge(2008) Jaruwan Wongtanet; Benjaphorn Prapagdee; เบญจภรณ์ ประภักดี; เบญจภรณ์ ประภักดี; จารุวรรณ วงค์ทะเนตร; Mahidol University. Faculty of Environment and Resource Studies. Laboratory of Environmental Biotechnology.The effects of inorganic ions (Cl-, K+, Na+ and Mg2+) and glucose concentrations on hydrogen production using sewage sludge microbes were studied. The experiments were investigated in the batch experiment by the heat mixed microorganisms at pH 5....5 and 35 °C. Cumulative hydrogen production increased with time for each ion and concentration to a maximum after 5-6 days. Hydrogen production decreased directly with inorganic ion concentrations. Generally, cumulative hydrogen production for a given timePublication Metadata only Adaptive and cross-protective responses against cadmium and zinc toxicity in cadmium-resistant bacterium isolated from a zinc mine(2009-01-01) Benjaphorn Prapagdee; Anchulee Watcharamusik; Faculty of Environment and Resource Studies, Mahidol UniversityCadmium (Cd) is a major environmental hazard, which usually is detected in its ionic form of Cd2+. It also causes adverse toxic effects on human health and other living organisms. Cd-resistant bacteria were isolated from Cd-contaminated soils. One... isolate, TAK1, was highly resistance level to Cd toxicity. TAK1 was isolated from soil contaminated with a high Cd concentration (204.1 mg.kg-1). The result of 16S rDNA sequence analysis found that the TAK1 showed the similarity to Ralstonia sp