The quality of microorganism on coal bed methane processing with various livestock waste in laboratory scale

Marlina, Eulis Tanti; Kurnani, Tb. Benito A.; Hidayati, Yuli Astuti; Rahmah, K. N.; Joni, I Made; Harlia, Ellin

doi:10.1063/1.5021202

Cited by 3 publications

(1 citation statement)

References 21 publications

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“…The bioaugmentation process uses pure cultures of microorganisms or microbial consortia from various sources to enrich native microorganisms. According to recent research, bioaugmentation is an effective method for improving the microbial community's performance to produce desired products (Atasoy & Cetecioglu, 2021;Marlina et al, 2018;Tang et al, 2019) as well as the community's interactions to help them adapt better to different environmental situations (Tabatabaei et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Evaluating the low-rank coal biodegradation efficiency bioaugmented with activated sludge

Kozhakhmetova,

Akimbekov,

Tastambek

2024

Preprint

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Microbiological treatment of coal is considered an effective and environmentally friendly method. In this work, the effect of microbiological impact on low-rank coal after enrichment with activated sludge was studied. Today, the search for new strategies for separating high-value products from low-quality coal represents a huge niche to explore. In connection with this need, efforts have been made to develop methods for coal solubilization through microbial activities. The microcosm was built with the addition of activated sludge and long-term cultivation. Bacterial communities of coal samples consist predominantly of the phyla Actinobacteria, and Proteobacteria, while Firmicutes and Bacteroidetes were the most abundant phyla for activated sludge. The low-quality coal and biodegradation products were characterized using infrared spectroscopy (FT-IR), and excitation-emission matrix spectrofluorimetry. Using the EEM model, the detected fluorophores were observed at specific wavelength positions at peak E, peak O, peak K, peak E1, peak O1, and peak K1. Peak O, Peak E, and Peak K of the six fluorophores showed the existence of naturally occurring organic materials with humic properties. Based on the FTIR results, it was found that in the bioaugmented microcosm, the transformation of coals was faster than that in the control variant. After incubation, the amount of carboxyl groups in the coals increased, most likely as a result of aerobic oxidation of peripheral non-aromatic structural components of brown coal. The results of CLPP showed that samples of activated sludge have a high metabolic activity of the microbial community when compared to coal. This study shows that the addition of exogenous microflora in the form of activated sludge stimulates the transformation of brown coal.

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Section: Introductionmentioning

confidence: 99%

Evaluating the low-rank coal biodegradation efficiency bioaugmented with activated sludge

Kozhakhmetova,

Akimbekov,

Tastambek

2024

Preprint

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The Process of Methanogenesis by Rumen Microorganisms: State of Art

et al. 2022

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Evaluating the low-rank coal degradation efficiency bioaugmented with activated sludge

Kozhakhmetova,

Akimbekov,

Digel

et al. 2024

Sci Rep

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Microbial bioaugmentation of coal is considered as a viable and ecologically sustainable approach for the utilization of low-rank coals (LRC). The search for novel techniques to derive high-value products from LRC is currently of great importance. In response to this demand, endeavors have been undertaken to develop microbially based coal solubilization and degradation techniques. The impact of supplementing activated sludge (AS) as a microbial augmentation to enhance LRC biodegradation was investigated in this study. The LRC and their biodegradation products were characterized using the following methods: excitation-emission Matrices detected fluorophores at specific wavelength positions (O, E, and K peaks), revealing the presence of organic complexes with humic properties. FTIR indicated the increased amount of carboxyl groups in the bioaugmented coals, likely due to aerobic oxidation of peripheral non-aromatic structural components of coal. The bacterial communities of LRC samples are primarily composed of Actinobacteria (up to 36.2%) and Proteobacteria (up to 25.8%), whereas the Firmicutes (63.04%) was the most abundant phylum for AS. The community-level physiological profile analysis showed that the microbial community AS had high metabolic activity of compared to those of coal. Overall, the results demonstrated successful stimulation of LRC transformation through supplementation of exogenous microflora in the form of AS.

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The quality of microorganism on coal bed methane processing with various livestock waste in laboratory scale

Cited by 3 publications

References 21 publications

Evaluating the low-rank coal biodegradation efficiency bioaugmented with activated sludge

Evaluating the low-rank coal biodegradation efficiency bioaugmented with activated sludge

The Process of Methanogenesis by Rumen Microorganisms: State of Art

Evaluating the low-rank coal degradation efficiency bioaugmented with activated sludge

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