Enhanced turnover of organic matter fractions by microbial stimulation during lignocellulosic waste composting

Jurado, M.M.; Suárez‐Estrella, F.; López, M.J.; Vargas-Garcı́a, M.C.; López-González, Juan A.; Moreno, J.

doi:10.1016/j.biortech.2015.03.059

Cited by 182 publications

(64 citation statements)

References 33 publications

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“…These results may indicate an effect of the inoculation with the two bacteria because the control presented a lower nitrogen content at the end of the process. According Jurado et al (2015) Nitrogenous fractions could be immobilized, volatilized as NH3 (during thermophilic phases) or oxidized. This may be the cause for the nitrogen differences found among all treatments.…”

Section: Resultsmentioning

confidence: 99%

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Microbial additives in the composting process

et al. 2017

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Composting is the process of natural degradation of organic matter carried out by environmental microorganisms whose metabolic activities cause the mineralization and partial humification of substances in the pile. This compost can be beneficially applied to the soil as organic fertilizer in horticulture and agriculture. The number of studies involving microbial inoculants has been growing, and they aim to improve processes such as composting. However, the behavior of these inoculants and other microorganisms during the composting process have not yet been described. In this context, this work aimed to investigate the effects of using a microbial inoculum that can improve the composting process and to follow the bacterial population dynamics throughout the process using the high-resolution melt (HRM) technique. To do so, we analysed four compost piles inoculated with Bacillus cereus, Bacillus megaterium, B. cereus + B. megaterium and a control with no inoculum. The analyses were carried out using samples collected at different stages of the process (5th to 110th days). The results showed that the bacterial inocula influenced the process of composting, altering the breakdown of cellulose and hemicelluloses and causing alterations to the temperature and nitrogen levels throughout the composting process. The use of a universal primer (rDNA 16S) allowed to follow the microbial succession during the process. However, the design of a specific primer is necessary to follow the inoculum throughout the composting process with more accuracy.Index terms: High Resolution Melt (HRM); bacteria; microbial ecology. RESUMOA compostagem é um processo de degradação natural da matéria orgânica realizado por microrganismos presentes no ambiente, levando a mineralização e humificação parcial das substâncias presentes na pilha, esse composto formado pode ser beneficamente aplicado ao solo como fertilizante orgânico na horticultura e agricultura. O número de estudos envolvendo inoculantes microbianos é crescente, os quais tem por objetivo a otimização de processos de compostagem. Contudo, o comportamento desses inoculantes e da microbiota ao longo do processo não tem sido caracterizado. Nesse contexto, este trabalho foi realizado com o objetivo de avaliar o efeito da utilização de um inóculo bacteriano que promova melhorias no processo de compostagem, bem como o de acompanhar a dinâmica populacional bacteriana ao longo de todo o processo através da técnica de High Resolution Melt (HRM). Para isso foram analisados quatro pilhas de compostagem inoculadas com Bacillus cereus, Bacillus megaterium, B. cereus + B. megaterium e o controle sem adição de inóculo. Foram realizadas análises químicas e moleculares (HRM) das amostras coletadas em diferentes períodos da compostagem (5º ao 110º dias). Os resultados mostraram que os inóculos bacterianos influenciaram no processo de compostagem com alteração na degradação de celulose, hemicelulose bem como alteração da temperatura e níveis de nitrogênio ao longo da compostagem. A utilização de ...

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Section: Resultsmentioning

confidence: 99%

“…Even in Treatment 3, the final lignin content was similar to the others. According to Jurado et al (2015), lignin is one of the plant components that is the most difficult to degrade.…”

Section: Resultsmentioning

confidence: 99%

Microbial additives in the composting process

et al. 2017

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“…Nowadays, large amounts of solid and liquid waste are produced in the processing of fruits and vegetables on the planet, accounting for about 93% of the waste generated by food processing, mainly fruits and vegetables, and it is very common that this type of waste end up in landfills [1]. Composting of organic residues such as those derived from the processing of fruits and vegetables is considered one of the most relevant options for its treatment, from an economic and environmental point of view, since compost can be used as fertilizer [2,3].…”

Section: Introductionmentioning

confidence: 99%

Relationship between Color CIEL∗a∗b∗ and Total Organic Carbon in Compost

Palechor-Tróchez

Ordóñez‐Santos

Castillo

2018

Advances in Materials Science and Engineering

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coordinates and the total organic carbon content in compost were correlated. Two particle sizes of 0.5 and 2 mm were obtained in the compost samples; the surface color was analyzed with a CIE L * a * b * colorimeter and the total organic carbon content by spectrophotometry at 588.9 nm. e results indicate that all chromaticity values were significantly affected (p < 0.001) by particle size. Chromaticity values a * , b * , C * , and h°showed significantly strong Pearson correlations (r > 0.95). e coordinates a * (r � −0.992) and b * (r � 0.968) have the potential to be used in estimating the total organic carbon concentration in the compost samples analyzed.

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“…Thereby, undegraded organic biomasses are converted and stabilized through an aerobic thermophilic bio-oxidation. Due to higher temperatures and the growth of aerobic microorganisms, composting can suppress pathogens and stabilize organic matter [170]. Thereby the soil adjustment properties can be improved.…”

Section: Fertilizer Production From Cull Tomato and Tomato Processingmentioning

confidence: 99%

“…Therefore, they should be co-composted with dry and carbon rich bulking agents to adjust the C/N ratio and humidity up to 40-60%. Several additions have been successfully applied to balance the initial C/N ratio of chopped tomato plants or culls such as cattle manure and sawdust [174], two-phase olive-mill pomace plus poultry manure [175,176], almond shells and sewage sludge [177], pine bark [170,178], biochar and chicken manure [179], wheat straw and separated dairy manures [180], hen manure and sawdust [181]. Composting of tomato wastes usually takes 2-4 months but advancements in composting technology have reduced its duration and improved the quality of compost by means of added specific compounds or microbial inoculums [170].…”

Section: Fertilizer Production From Cull Tomato and Tomato Processingmentioning

confidence: 99%

Processing, Valorization and Application of Bio-Waste Derived Compounds from Potato, Tomato, Olive and Cereals: A Review

Fritsch

Stäbler

Happel³

et al. 2017

Sustainability

157

102

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Abstract:The vast and ever-growing amount of agricultural and food wastes has become a major concern throughout the whole world. Therefore, strategies for their processing and value-added reuse are needed to enable a sustainable utilization of feedstocks and reduce the environmental burden. By-products of potato, tomato, cereals and olive arise in significant amounts in European countries and are consequently of high relevance. Due to their composition with various beneficial ingredients, the waste products can be valorized by different techniques leading to economic and environmental advantages. This paper focuses on the waste generation during industrial processing of potato, tomato, cereals and olives within the European Union and reviews state-of-the-art technologies for their valorization. Furthermore, current applications, future perspectives and challenges are discussed.

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Enhanced turnover of organic matter fractions by microbial stimulation during lignocellulosic waste composting

Cited by 182 publications

References 33 publications

Microbial additives in the composting process

Microbial additives in the composting process

Relationship between Color CIEL∗a∗b∗ and Total Organic Carbon in Compost

Processing, Valorization and Application of Bio-Waste Derived Compounds from Potato, Tomato, Olive and Cereals: A Review

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