Detoxification and eco-friendly recycling of brick kiln coal ash using Eisenia fetida: A clean approach through vermitechnology

Mondal, Aniruddha; Goswami, Linee; Hussain, Nazneen; Barman, Soma; Kalita, Eeshan; Bhattacharyya, Pradip; Bhattacharya, Suvendu

doi:10.1016/j.chemosphere.2019.125470

Cited by 41 publications

(5 citation statements)

References 35 publications

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“…However, the increment in NPK bioavailability was signi cantly greater under vermicompost than under composting. This suggests that the presence of earthworms augmented the nutrient levels by accelerating the microbial activity [35]. Correspondingly, the microbial biomass carbon and microbial respiration were remarkably enhanced by about 3.35 folds and 2.31 folds in the vermibeds compared to the composting beds (P for treatment < 0.01; LSD = 15.94).…”

Section: Discussionmentioning

confidence: 88%

Bioethanol Production from Lignocellulosic Waste Without Pre-treatment Employing Vermicompost and Earthworm Gut-isolated Bacteria: Insights on Waste to Wealth Conversion Efficiency Towards Cleaner Lifestyle

Chowdhury,

Hussain,

Mukherjee

et al. 2024

Waste Biomass Valor

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Lignocellulosic wastes (LCW) have enormous potential to be recycled for bioethanol production. Although yeasts (Saccharomyces sp.) are commonly used bio-agents for fermentation, their e ciency is inhibited in cellulosic feedstocks. This study isolated novel ethanologenic bacteria from vermicomposting systems for bioenergy generation from fruit waste without pre-treatment. Initially, six strains out of 22, showing remarkable ethanol production ability, were characterized via 16S rRNA sequencing. Speci cally, two strains (Bacillus alcalophilus C5 and Rhizobium spp. S10) produced more ethanol (5.5 and 15.7 g L − 1 ) than the yeast (5 g L − 1 ) from banana epicarps. These strains' dramatically high sedimentation rate and ethanol tolerance strongly justi ed their industrial applicability. Signi cant upregulation of alcohol dehydrogenase and acetyl CoA synthase endowed greater ethanol-producing capacity in C5 and S10 than in S. cerevisiae. The ow cytometry and confocal microscopy evidenced that ethanologenic bacteria uniquely defend the reactor-induced sugar and ethanol stresses through reverse/delayed apoptosis and robust membrane integrity. The waste-to-wealth conversion e ciency and cost-bene t analyses estimated that bacteria-mediated LCW-to-bioethanol conversion was a more pro table venture than vermicomposting or composting. Overall, this research demonstrated that the C5 and S10 isolates were more effective than widely used commercial yeast strains for bioethanol generation from LCW. Statement of NoveltyThis study marks a pioneering breakthrough in bioethanol production by isolating ethanologenic bacteria from vermicompost for the rst time. Derived from earthworm guts, these bacterial strains outperform yeast, yielding 2-3 times more ethanol. Importantly, they exhibit an unprecedented ability to generate ethanol directly from raw biomass without pretreatment. Flow cytometry uncovers a distinctive defense mechanism against sugar stress, highlighting the bacteria's robust membrane integrity and exceptional stress tolerance. This research not only advances sustainable bioethanol production but also unveils novel insights into adaptive strategies of ethanologenic bacteria.

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Section: Discussionmentioning

confidence: 88%

Bioethanol Production from Lignocellulosic Waste Without Pre-treatment Employing Vermicompost and Earthworm Gut-isolated Bacteria: Insights on Waste to Wealth Conversion Efficiency Towards Cleaner Lifestyle

Chowdhury,

Hussain,

Mukherjee

et al. 2024

Waste Biomass Valor

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“…Soil pH was measured with a pH meter using 1:2 soil: water suspensions. The detailed instructions referred to methods described in the literature (Bao, 2000; Mondal et al, 2020).…”

Section: Methodsmentioning

confidence: 99%

Linkages between soil respiration and soil eukaryotic microalgae following vegetation restoration in the Loess Plateau, China

Zhang

2022

Land Degrad Dev

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Eukaryotic microalgae are widespread in soil. They are generally considered to participate in soil development and the formation of the soil food chain. Interestingly, some microalgae can grow in heterotrophic mode. Therefore, it is a reasonable speculation that eukaryotic microalgae may participate in the process of soil respiration (Rs) via the heterotrophic metabolism of soil organic matter. Nevertheless, the mechanism is not well understood. Here, we investigated the eukaryotic microalgal community in farmland and plantation/grassland soil via high-throughput sequencing focusing on the Loess Plateau, China. Chlorophyta, Chrysophyta, Cryptophyta, Bacillariophyta, Dinophyta, Xanthophyta, and Haptophyta were found in all samples. Nevertheless, the biomarker for farmland soil was affiliated to Chlorophyta and Xanthophyta, whereas the biomarker for plantation/grassland soil was affiliated to Chrysophyta. Moreover, the distribution of soil microalgae was strongly dependent on soil pH, organic matter, and nitrogen. In addition, afforestation significantly decreased Rs rate, which was significantly related to the soil microalgal community, especially 11 taxa of eukaryotic microalgae affiliating to Chlorophyta and Chrysophyta. Meanwhile, the interaction between microalgae and bacteria in farmland soil was stronger than that in plantation/grassland soil, which was also likely to affect Rs rate. These results suggest that beyond plants, soil eukaryotic microalgae are functionally significant but rarely considered participants of Rs. Therefore, they should be considered when investigating soil carbon cycling.

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“…Vermicompost is an emerging technology for fast decomposition and stabilization product of active organic biomass material formed from the interactions between microorganisms and earthworms (red wrigglers, white worms, and earthworms), which is one of the important components of sustainable organic fertilizer and it is quite rich in plant nutrients [87,89,93,94]. Due to the growth of population urban areas, solid left-over production is growing rapidly, making garbage pollution a serious problem [89], and that can be utilized for sustainable land restoration practices by converting into plant nutrients.…”

Section: Vermicompostmentioning

confidence: 99%

Growing Use and Impacts of Chemical Fertilizers and Assessing Alternative Organic Fertilizer Sources in Ethiopia

Gisila

Tamtam

Abebe

et al. 2022

Applied and Environmental Soil Science

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This paper reviews relevant facts and statistics about the benefits and impacts of the growing use of chemical fertilizer with a focus on soil fertility, crop productivity, and alternative sources of biofertilizers. Agriculture in Ethiopia is the main source of the economy, and it is the key contributor of the export value and provider of raw materials to processing industries. However, Ethiopian agronomical production is characterized by low output, lack of infrastructure, and low level of technology and is enormously dependent on rainfall availability. In Ethiopia, soil fertility reduction is evolving as a serious contest causing low crop yields, and research findings reported that, at the country level, nutrient balance indicated a depletion rate of 122 kg N ha−1 yr−1, 13 kg P ha−1 yr−1, and 82 kg K ha−1 yr−1. To control soil fertility depletion, primarily fertilizers are used as the source of essential plant nutrients. In Ethiopia, the use of chemical fertilizers to increase crop production was low relative to other developing countries; however, now, it is steadily increasing. Urea and diammonium phosphate are common practices for maintaining soil fertility. Chemical fertilizer consumption increased from 12 kg/ha in 1996 to 36.2 kg/ha in 2018. The main cereals’ production increased from 16.5 quintal/ha in 2009 to 23.94 quintal/ha in 2018.

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Detoxification and eco-friendly recycling of brick kiln coal ash using Eisenia fetida: A clean approach through vermitechnology

Cited by 41 publications

References 35 publications

Bioethanol Production from Lignocellulosic Waste Without Pre-treatment Employing Vermicompost and Earthworm Gut-isolated Bacteria: Insights on Waste to Wealth Conversion Efficiency Towards Cleaner Lifestyle

Bioethanol Production from Lignocellulosic Waste Without Pre-treatment Employing Vermicompost and Earthworm Gut-isolated Bacteria: Insights on Waste to Wealth Conversion Efficiency Towards Cleaner Lifestyle

Linkages between soil respiration and soil eukaryotic microalgae following vegetation restoration in the Loess Plateau, China

Growing Use and Impacts of Chemical Fertilizers and Assessing Alternative Organic Fertilizer Sources in Ethiopia

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