Assessment of a low rank coal inoculated with coal solubilizing bacteria as an organic amendment for a saline-sodic soil

Cubillos-Hinojosa, Juan Guillermo; Valero, Nelson Valero; Melgarejo, Luz Marina

doi:10.1186/s40538-015-0048-y

Cited by 15 publications

(5 citation statements)

References 34 publications

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“…Other studies have shown that the hydrolysis of FDA is an effective indicator of the soil quality in degraded areas in restoration processes [19,20] due to the fact that FDA assays and soil respiration are biochemical standards that change rapidly and show sensitivity to stress and soil reclamation [21].…”

Section: Discussionmentioning

confidence: 99%

Effect of low-rank coal inoculated with coal solubilizing bacteria on edaphic materials used in post-coal-mining land reclamation: a greenhouse trial

Valero

Melgarejo

Ramírez

2016

Chem. Biol. Technol. Agric.

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Background: This study assessed, under greenhouse conditions, the use of low-rank coal (LRC) generated in the "El Cerrejón" (La Guajira Colombia) mine as a source of humified organic matter, which is released by the activity of coal solubilizing bacteria (CSB), in order to improve the properties of edaphic materials (EM) used in post-mining land reclamation processes. Methods:In this trial, using pots with 10 kg of EM, the effect of LRC applications was tested, in contrast with applications of LRC inoculated with CSB at two different doses and EM without LRC. The responses of the cation exchange capacity (CEC), soil respiration, and fluorescein diacetate hydrolysis (FDA) were evaluated in each treatment. The contents of P and N and the dry weight were measured in maize seedlings. Soil microaggregates were observed with scanning electronic microscopy. Results:After 12 months of treatment with LRC, an increase of 75 % was registered in the CEC, along with an increase of up to 59 % in the EM respiration (CO 2 production) and up to 50 % in the FDA activity. The LRC caused a significant increase in the dry weight and the total contents of N and P in the maize seedlings; the observations with the scanning electronic microscopy showed evidence of the formation of bigger aggregates, as compared to the control, and the presence of organic material on mineral particles in the treatments with LRC inoculated with CSB. Conclusions:These results provided evidence that supports the use of LRC, alone or inoculated with CSB, as a humic amendment to improve the EM in soil reclamation processes (Technosols construction) after mining activities.

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Section: Discussionmentioning

confidence: 99%

Effect of low-rank coal inoculated with coal solubilizing bacteria on edaphic materials used in post-coal-mining land reclamation: a greenhouse trial

Valero

Melgarejo

Ramírez

2016

Chem. Biol. Technol. Agric.

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“…Co-application of LRC and exogenous Bacillus mycoides, Microbacterium sp. and Acinetobacter baumannii increased the soil respiration and microbiological activity [25,31].…”

Section: Combination With Coal Solubilizing Bacteriamentioning

confidence: 99%

“…However, existing reports consistently show that LRC amendment increases soil microbial activity, manifesting in elevated soil respiration, higher enzyme activity, and larger CEC [36,84,85]. High specific surface area and porosity of LRC promotes ventilation and moisture retention, providing a favorable habitat for the growth and activity of microbial communities [31]. Activity levels of various hydrolytic and ligninolytic enzymes (including esterases, peroxidases, phenol oxidases as well as supporting enzymes, e.g., H 2 O 2 -generating oxidases; all predominantly of fungal origin) are strongly positively correlated with the enrichment of soil with LRC [86].…”

Section: Effects Of Lrc On Soil Microbial and Biochemical Qualitiesmentioning

confidence: 99%

Low-Rank Coal as a Source of Humic Substances for Soil Amendment and Fertility Management

et al. 2021

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Humic substances (HS), as important environmental components, are essential to soil health and agricultural sustainability. The usage of low-rank coal (LRC) for energy generation has declined considerably due to the growing popularity of renewable energy sources and gas. However, their potential as soil amendment aimed to maintain soil quality and productivity deserves more recognition. LRC, a highly heterogeneous material in nature, contains large quantities of HS and may effectively help to restore the physicochemical, biological, and ecological functionality of soil. Multiple emerging studies support the view that LRC and its derivatives can positively impact the soil microclimate, nutrient status, and organic matter turnover. Moreover, the phytotoxic effects of some pollutants can be reduced by subsequent LRC application. Broad geographical availability, relatively low cost, and good technical applicability of LRC offer the advantage of easy fulfilling soil amendment and conditioner requirements worldwide. This review analyzes and emphasizes the potential of LRC and its numerous forms/combinations for soil amelioration and crop production. A great benefit would be a systematic investment strategy implicating safe utilization and long-term application of LRC for sustainable agricultural production.

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“…Cubillos-Hinojosa et al reported that soil amendment with 1% coal and coal-solubilizing bacteria promoted short-term biological activity (increase in soil respiration and hydrolytic enzyme activity) associated with coal biotransformation and increased the soil cation exchange capacity [ 177 ]. Incorporating coal as a source of humic substances together with coal-solubilizing bacteria in saline–sodic soils under field conditions significantly and positively affected the chemical and biological soil properties [ 178 ]. This was reflected in decreases in the electrical conductivity, sodium adsorption ratio, and exchangeable sodium percentage, as well as in increases in microbiological activity and soil respiration [ 177 , 179 ].…”

Section: Bioremediation Of Contaminated Sites By Native Microorganismsmentioning

confidence: 99%

Biotechnology of Microorganisms from Coal Environments: From Environmental Remediation to Energy Production

Akimbekov

Digel

Tastambek

et al. 2022

Biology

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It was generally believed that coal sources are not favorable as live-in habitats for microorganisms due to their recalcitrant chemical nature and negligible decomposition. However, accumulating evidence has revealed the presence of diverse microbial groups in coal environments and their significant metabolic role in coal biogeochemical dynamics and ecosystem functioning. The high oxygen content, organic fractions, and lignin-like structures of lower-rank coals may provide effective means for microbial attack, still representing a greatly unexplored frontier in microbiology. Coal degradation/conversion technology by native bacterial and fungal species has great potential in agricultural development, chemical industry production, and environmental rehabilitation. Furthermore, native microalgal species can offer a sustainable energy source and an excellent bioremediation strategy applicable to coal spill/seam waters. Additionally, the measures of the fate of the microbial community would serve as an indicator of restoration progress on post-coal-mining sites. This review puts forward a comprehensive vision of coal biodegradation and bioprocessing by microorganisms native to coal environments for determining their biotechnological potential and possible applications.

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Assessment of a low rank coal inoculated with coal solubilizing bacteria as an organic amendment for a saline-sodic soil

Cited by 15 publications

References 34 publications

Effect of low-rank coal inoculated with coal solubilizing bacteria on edaphic materials used in post-coal-mining land reclamation: a greenhouse trial

Effect of low-rank coal inoculated with coal solubilizing bacteria on edaphic materials used in post-coal-mining land reclamation: a greenhouse trial

Low-Rank Coal as a Source of Humic Substances for Soil Amendment and Fertility Management

Biotechnology of Microorganisms from Coal Environments: From Environmental Remediation to Energy Production

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