Phylogenetic Study of Methanol Oxidizers from Chilika-Lake Sediments Using Genomic and Metagenomic Approaches

Meena, Kamlesh K.; Kumar, Manish; Mishra, Snehasish; Ojha, Sanjay Kumar; Wakchaure, G.C.; Sarkar, Biplab

doi:10.1007/s12088-015-0510-3

Cited by 6 publications

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“…No inhibitory molecule is produced during biological pretreatments at mild environmental conditions, but rather it includes benefits such as improved productivity of sugars, pH stabilization, enhanced rate of hydrolysis, adaptability and maximised substrate conversion rate (Kalyani et al 2013). The metagenomics of related groups in methane cycle is also interesting (Meena et al 2015). Bremond et al (2018) has reported a table that indicates the research trends in biological pretreatment of anaerobically biodigested substrates including that of the lignocellulose biomass in the last 8 years till 2016 as published scientific articles.…”

Section: Introductionmentioning

confidence: 99%

Microbial pretreatment of lignocellulosic biomass for enhanced biomethanation and waste management

et al. 2018

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Biogas obtained from organic remains entails a developed technology and an appreciable methane yield, but its use may not be sustainable. The potential methane yield of various lignocellulose biomass and the operational conditions employed are inherently reviewed. Although of lower methane yields compared to conventional substrates, agricultural biomass is a cheap option. The major challenges encountered during its biogasification are its recalcitrance nature primarily due to the presence of crystalline cellulose and lignin. This necessitates an essential pretreatment step through physical, chemical or biological interventions for enhanced biomethanation potential. Various pretreatment-physical, chemical, and biological-strategies have been developed to overcome the inherent recalcitrance of lignocellulose to anaerobic degradation. Biological pretreatment approach, however, outcompete other pretreatments due to their application in milder conditions, little corrosiveness, and lower byproduct formation. Such pretreatment importantly aids in selectively reducing the lignin content and crystalline nature of the lignocellulosic biomass, which would evidently enhance the hydrolysis and production of monomers for their further anaerobic digestion (AD) for methanation. A variety of applied biological pretreatment strategies comprises microaerobic treatments, ensiling or composting, separation of digestion stages, and pretreatments using various lignocellulolytic fungi alongside. The net energy output through such approaches is substantially more and relatively inexpensive compared to other established chemical and mechanical approaches. The present review highlights the use of biological agents including bacterial, fungal and/or their enzymes which trigger biodegradation of wastes and utilization of lignocellulose for biofuel production. Additionally, the different physical, chemical, and biological pretreatment strategies for biogas yield enhancement are presented.

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Section: Introductionmentioning

confidence: 99%