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Sembiring, T.
Research Center for Chemistry - LIPI
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INFLUENCE OF NI++ AND FE++ ON THE ANAEROBIC BIODEGRADATION OF ORGANIC WASTE SUSPENSION Sriwuryandari, Lies; Sembiring, T.
Teknologi Indonesia Vol 32, No 1 (2009)
Publisher : LIPI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (16.048 KB) | DOI: 10.14203/jti.v32i1.56

Abstract

Study of the effect of trace elements of Ni and Fe and acidity on the biodegradation of organic material in anaerobic condition was executed in serum vials. Effect of ferrous, nickel, its combination and acidity were determined by the measurement of volatile fatty acids, methane, hydrogen, and organic materials concentration during the experiment. The influence of nickel and ferrous on the biodegradation of organic materials shows that ferrous was more favorable although nickel is an essential element for methanogens. Iron stimulated gas production more quickly than nickel did in anaerobic digestion even for organic material elimination was better in the presence of iron rather than nickel. Effect of acidity on the biodegradation shown that pH should be above 6.5 to have an optimum degradation of organic substances.
Biomethane and Biohydrogen from Biowaste /Wastewater Sriwuryandari, Lies; Sembiring, T.
Teknologi Indonesia Vol 37, No 3 (2014)
Publisher : LIPI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jti.v37i3.227

Abstract

The production of renewable energy from biowaste or liquid biowaste in anaerobic condition by the activity of methanogenic archeabacteria in the central role is known as biomethanation. However, at the high concentration of loading rate of the process, related with the sensitivity of methanogens to the environmental shift, such as pH, heavy metals, sulfide, and hydrogen partial pressure, as well as the need of the methanogens to the strict anaerobic conditions, the methane production often was disturbed, even failed. This is one problem in the biowaste and liquid biowaste conversion into methane. Study on the fermentation process of biowaste/liquid biowaste into hydrogen is an attractive solution on the solving of environmental pollution and the need of energy. The complexity of the hydrogen production is seemly less than that of biomethanation due to the needs of the active microorganisms in the processes.
Co-Authors Sriwuryandari, Lies