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Control of Anaerobic Digestion Toxicity with Powdered Activated Carbon

机译：用粉状活性炭控制厌氧消化毒性

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Anaerobic biological treatment systems offer advantages over aerobic systems in terms of lower energy requirements, less biological solids production, and the potential for energy recovery in the form of methane gas. While the use of anaerobic biotechnology is widespread in municipalities, there is a general reluctance among industrial waste engineers to accept anaerobic processes as a viable alternative for the detoxification/stabilization of industrial wastes. This reluctance apparently stems from concerns that anaerobic treatment processes are, in general, less stable and less tolerant to toxins than their metabolically more diverse aerobic counterparts. Powdered activated carbon (PAC) has been used with activated sludge processes for the treatment of wastewaters containing components resistant to biodegradation and/or toxic to aerobic microorganisms. The mechanism or mechanisms responsible for PAC enhancement of the activated sludge process are not entirely clear; however, it was recently shown that adsorption of inhibitory compounds has a major role in nitrification enhancement. The major objective of this study is to determine if methanogenesis can be enhanced by the addition of PAC. Experiments were designed to test the effect of PAC addition on the anaerobic metabolism of ethanol, in the presence of known adsorbable inhibitors. 14 refs., 14 figs., 2 tabs. (ERA citation 12:004174)

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