Poly biochemical oxygen demand

A strain of yeast and a strain of bacterium were co-immobilized to fabricate a biochemical oxygen demand (BOD) sensor based on sol-gel derived composite materials97. This novel type of biosensor was developed for water monitoring and was used to determine the BOD values of OECD synthetic wastewater, domestic wastewater, and lake waters. The microorganisms Trichosporon cutaneum and Bacillus subtilis were coimmobilized in the sol-gel composite material, which was composed of silica and the grafting copolymer of poly (vinyl alcohol) and 4-vinylpyridine (PVA-g-P(4-VP)). 

Table I shows the five-day biochemical oxygen demand (BOD5 ) of some poly(sodium carboxylate)s and poly(vinyl alcohoDs (PVA). The BOD5 test according to JIS K 0102 is only an indication of susceptibility of products to biodegradation, but the test is often an useful tool for rapid screening. As shown in Table I, PMLA and...

Biochemical oxygen demand tests with aqueous culture systems [45] can be used to measure the volume of carbon dioxide liberated from the mineralization of a substrate. Ohkawa et al. [22] used this method to follow the mineralization of fibers of the polyion complexes of chitosan-gellan and poly(L-lysine)-gellan. Filamentous fungi were used in this investigation and carbon dioxide release was observed. 

TOD, theoretical oxygen demand BODS, 5-day biochemical oxygen demand CioaGlc, Decyl ct-D-glucopyranoside C12EO10, dodecylpoly(oxyethylene) ether n = 10 CigEOio, Octadecyl poly(oxyethylene) ether n = 10. 

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