Water-induced molecular changes of hard coals and lignites

Pytlak, Anna; Sujak, Agnieszka; Szafranek-Nakonieczna, Anna; Grządziel, Jarosław; Banach, Artur; Goraj, Weronika; Gałązka, Anna; Gruszecki, Wiesław I.; Stępniewska, Zofia

doi:10.1016/j.coal.2020.103481

Cited by 7 publications

(3 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, water molecules and CO 2 are likely to adsorb to similar functional groups. As such, the direct competition for active sites between water and CO 2 molecules may be observed resulting in higher desorption rates at 100% WHC (Pytlak et al, 2020). The lower bulk density of the new biochars (Br and Bp) in comparison with the well-known materials (Bo and Bs) may result in a higher degree of aeration, gas availability and surface area available for microbial colonization (Table 1).…”

Section: Discussionmentioning

confidence: 99%

New biochars from raspberry and potato stems absorb more methane than wood offcuts and sunflower husk biochars

Kubaczyński¹,

Walkiewicz²,

Pytlak³

et al. 2020

Int. Agrophys.

Self Cite

View full text Add to dashboard Cite

The reduction in greenhouse gas emissions from agriculture is of particular importance at present. In recent times, biochar addition to the soil was suggested as a means of mitigating greenhouse gases emissions from arable fields. More specifically, biochars with useful properties and those produced from easily available waste materials are still being sought. In the presented experiment, the CH 4 absorption potential of four biochars incubated at 60 and 100% water holding capacity with the addition of 1% CH 4 (v/v) was investigated for 28 days at 25 o C. The potato stem and raspberry stem biochars showed much higher potentials for CH 4 uptake than wood offcuts biochar and sunflower husk biochar. Potato stem and raspberry stem biochars incubated at 60% water holding capacity were characterized by a methane uptake rate of 8.01 ± 0.47 and 5.78 ± 0.17 mg CH 4-C kg-1 d-1 , respectively. The methane removal potentials of the other biochars were clearly lower. The advantage of the biochars from raspberry and potato stems over the wood offcuts biochar also results from their significantly lower production of carbon dioxide. Consequently, these materials have a high potential for agricultural use, in view of their impact on the greenhouse gas balance of the soil. K e y w o r d s: biochar, methane, greenhouse gas removal, raspberry stems, potato stems

show abstract

Section: Discussionmentioning

confidence: 99%

New biochars from raspberry and potato stems absorb more methane than wood offcuts and sunflower husk biochars

Kubaczyński¹,

Walkiewicz²,

Pytlak³

et al. 2020

Int. Agrophys.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Until February 2022, literature retrieval was conducted through the Web of Science database, and the published papers ,,− of “coal” and “microbial communities” were retrieved. The fastQ files according to the accession numbers of the 16S rRNA gene data from coal samples were downloaded.…”

Section: Methodsmentioning

confidence: 99%

Carbon–Nitrogen–Sulfur-Related Microbial Taxa and Genes Maintained the Stability of Microbial Communities in Coals

Liu

Chen

et al. 2022

ACS Omega

View full text Add to dashboard Cite

Coal microbes are the predominant form of life in the subsurface ecosystem, which play a vital role in biogeochemical cycles. However, the systematic information about carbon–nitrogen–sulfur (C–N–S)-related microbial communities in coal seams is limited. In this study, 16S rRNA gene data from a total of 93 microbial communities in coals were collected for meta-analysis. The results showed that 718 functional genera were related to the C–N–S cycle, wherein N 2 fixation, denitrification, and C degradation groups dominated in relative abundance, Chao1 richness, Shannon diversity, and niche width. Genus Pseudomonas having the most C–N–S-related functions showed the highest relative abundance, and genus Herbaspirillum with a higher abundance participated in C degradation, CH 4 oxidation, N 2 fixation, ammoxidation, and denitrification. Such Herbaspirillum was a core genus in the co-occurrence network of microbial prokaryotes and showed higher levels in weight degree, betweenness centrality, and eigenvector centrality. In addition, most of the methanogens could fix N 2 and dominated in the N 2 fixation groups. Among them, genera Methanoculleus and Methanosaeta showed higher levels in the betweenness centrality index. In addition, the genus Clostridium was linked to the methanogenesis co-occurrence network module. In parallel, the S reduction gene was present in the highest total relative abundance of genes, followed by the C degradation and the denitrification genes, and S genes (especially cys genes) were the main genes linked to the co-occurrence network of the C–N–S-related genes. In summary, this study strengthened our knowledge regarding the C–N–S-related coal microbial communities, which is of great significance in understanding the microbial ecology and geochemical cycle of coals.

show abstract

“…Due to the economic importance of the energy industry in recent years, one of the dominant branches of geomicrobiology has been associated with coal and lignite deposits. These environments host diverse microbial communities, the composition of which also includes methanotrophic bacteria [18,50,51].…”

Section: Bacterial Diversitymentioning

confidence: 99%

Dynamics of Methane-Consuming Biomes from Wieliczka Formation: Environmental and Enrichment Studies

Goraj,

Pytlak,

Grządziel

et al. 2023

Biology

Self Cite

View full text Add to dashboard Cite

The rocks surrounding Wieliczka salt deposits are an extreme, deep subsurface ecosystem that as we studied previously harbors many microorganisms, including methanotrophs. In the presented research bacterial community structure of the Wieliczka Salt Mine was determined as well as the methanotrophic activity of the natural microbiome. Finally, an enrichment culture of methane-consuming methanotrophs was obtained. The research material used in this study consisted of rocks surrounding salt deposits in the Wieliczka Salt Mine. DNA was extracted directly from the pristine rock material, as well as from rocks incubated in an atmosphere containing methane and mineral medium, and from a methanotrophic enrichment culture from this ecosystem. As a result, the study describes the composition of the microbiome in the rocks surrounding the salt deposits, while also explaining how biodiversity changes during the enrichment culture of the methanotrophic bacterial community. The contribution of methanotrophic bacteria ranged from 2.614% in the environmental sample to 64.696% in the bacterial culture. The methanotrophic enrichment culture was predominantly composed of methanotrophs from the genera Methylomonas (48.848%) and Methylomicrobium (15.636%) with methane oxidation rates from 3.353 ± 0.105 to 4.200 ± 0.505 µmol CH4 mL−1 day−1.

show abstract

Water-induced molecular changes of hard coals and lignites

Cited by 7 publications

References 39 publications

New biochars from raspberry and potato stems absorb more methane than wood offcuts and sunflower husk biochars

New biochars from raspberry and potato stems absorb more methane than wood offcuts and sunflower husk biochars

Carbon–Nitrogen–Sulfur-Related Microbial Taxa and Genes Maintained the Stability of Microbial Communities in Coals

Dynamics of Methane-Consuming Biomes from Wieliczka Formation: Environmental and Enrichment Studies

Contact Info

Product

Resources

About