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Catalysts 2019, 9(4), 326; https://doi.org/10.3390/catal9040326

Long-Term Storage and Use of Artificially Immobilized Anaerobic Sludge as a Powerful Biocatalyst for Conversion of Various Wastes Including Those Containing Xenobiotics to Biogas

1
Faculty of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia
2
Emanuel Institute of Biochemical Physics, Russian Academy of Science, 119334 Moscow, Russia
*
Authors to whom correspondence should be addressed.
Received: 28 February 2019 / Revised: 25 March 2019 / Accepted: 28 March 2019 / Published: 2 April 2019
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Abstract

The aim of this paper is to demonstrate the possibilities of anaerobic sludge cells immobilized into poly(vinyl alcohol) cryogel for the methanogenic conversion of various lignocellulosic waste and other media containing antibiotics (ampicillin, kanamycin, benzylpenicillin) or pesticides (chlorpyrifos or methiocarb and its derivatives). It was established that the immobilized cells of the anaerobic consortium can be stored frozen for at least three years while preserving a high level of metabolic activity. The cells after the long-term storage in an immobilized and frozen state were applied for the methanogenesis of a wide number of wastes, and an increase in both methane yield and methane portion in the produced biogas as compared to the conventionally used suspended anaerobic sludge cells, was ensured. It was shown that the “additional” introduction of bacterial Clostridium acetobutylicum, Pseudomonas sp., Enterococcus faecalis cells (also immobilized using same support) improves characteristics of methanogenesis catalyzed by immobilized anaerobic sludge. View Full-Text
Keywords: immobilization; methanogenesis; lignocellulosic waste; pesticide; antibiotics immobilization; methanogenesis; lignocellulosic waste; pesticide; antibiotics
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Senko, O.; Gladchenko, M.; Maslova, O.; Efremenko, E. Long-Term Storage and Use of Artificially Immobilized Anaerobic Sludge as a Powerful Biocatalyst for Conversion of Various Wastes Including Those Containing Xenobiotics to Biogas. Catalysts 2019, 9, 326.

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