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Two upflow anaerobic sludge blanket (UASB) reactors were operated to investigate the fate of aromatic amines under denitrifying conditions. The feed consisted of synthetic wastewater containing aniline and/or sulfanilic acid and a mixture of volatile fatty acids (VFA) as the primary electron donors. Reactor 1 (R1) contained a stoichiometric concentration of nitrate and Reactor 2 (R2) a stoichiometric...
The most logical concept for the removal of azo dyes in biological wastewater treatment systems is based on anaerobic treatment, for the reductive cleavage of the dyes’ azo linkages, in combination with aerobic treatment, for the degradation of the products from azo dye cleavage, aromatic amines. Since the 1990s, several research papers have been published on combined, sequential or integrated, anaerobic–aerobic...
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