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Produção de hidrogênio via fermentação anaeróbia - aspectos gerais e possibilidade de utilização de resíduos agroindustriais brasileiros Translated title: Hydrogen production by anaerobic fermentation - general aspects and possibility of using brazilian agro-industrial wastes

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      Translated abstract

      Biological production of hydrogen through anaerobic fermentation has received increasing attention and offers a great potential as an alternative process for clean fuel production in the future. Considering biological systems for H2 production, anaerobic fermentation stands out, primarily due to its higher production of H2 compared with other biological processes. In addition the possibility of using different agro-industrial wastes as substrates opens up infinite possibilities. The development and implementation of sustainable processes for converting renewable materials into different value-added products is essential for the full exploitation of Brazilian agro-industrial wastes.

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      Most cited references 138

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      Anaerobic Biotechnology for Industrial Wastewaters

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        Microbial reductive dehalogenation.

        A wide variety of compounds can be biodegraded via reductive removal of halogen substituents. This process can degrade toxic pollutants, some of which are not known to be biodegraded by any other means. Reductive dehalogenation of aromatic compounds has been found primarily in undefined, syntrophic anaerobic communities. We discuss ecological and physiological principles which appear to be important in these communities and evaluate how widely applicable these principles are. Anaerobic communities that catalyze reductive dehalogenation appear to differ in many respects. A large number of pure cultures which catalyze reductive dehalogenation of aliphatic compounds are known, in contrast to only a few organisms which catalyze reductive dehalogenation of aromatic compounds. Desulfomonile tiedjei DCB-1 is an anaerobe which dehalogenates aromatic compounds and is physiologically and morphologically unusual in a number of respects, including the ability to exploit reductive dehalogenation for energy metabolism. When possible, we use D. tiedjei as a model to understand dehalogenating organisms in the above-mentioned undefined systems. Aerobes use reductive dehalogenation for substrates which are resistant to known mechanisms of oxidative attack. Reductive dehalogenation, especially of aliphatic compounds, has recently been found in cell-free systems. These systems give us an insight into how and why microorganisms catalyze this activity. In some cases transition metal complexes serve as catalysts, whereas in other cases, particularly with aromatic substrates, the catalysts appear to be enzymes.
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          Fermentative Hydrogen Production From Wastewater and Solid Wastes by Mixed Cultures

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            Author and article information

            Affiliations
            [1 ] Instituto Nacional de Tecnologia Brazil
            [2 ] Universidade Federal do Rio de Janeiro Brazil
            [3 ] Universidade Federal do Rio de Janeiro Brazil
            Contributors
            Role: ND
            Role: ND
            Role: ND
            Journal
            qn
            Química Nova
            Quím. Nova
            Sociedade Brasileira de Química (São Paulo )
            1678-7064
            June 2014
            : 37
            : 5
            : 857-867
            S0100-40422014000500017
            10.5935/0100-4042.20140138

            http://creativecommons.org/licenses/by/4.0/

            Product
            Product Information: SciELO Brazil
            Categories
            CHEMISTRY, MULTIDISCIPLINARY

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