Inactivation of bacterial pathogenic load in compost against vermicompost of organic solid waste aiming to achieve sanitation goals: A review

Soobhany, Nuhaa; Mohee, Romeela; Garg, V.K.

doi:10.1016/j.wasman.2017.03.003

Cited by 88 publications

(46 citation statements)

References 123 publications

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“…The temperature profile during composting is influenced by the composition of the initial feedstock, aeration through pile turning, compost humidity and the addition of additives or bulking agents (Pasda et al 2005). It influences compost duration, compost quality and maturity, but also compost sanitisation (Soobhany et al 2017). CO 2 and NH 3 emissions, mainly produced during the thermophilic stage of organic matter degradation (Maulini-Duran et al 2014;Pagans et al 2006), are affected by the C/N ratio of the composted material, the maximum temperature reached during the process and the aeration of the pile (Pagans et al 2006).…”

Section: The Composting Processmentioning

confidence: 99%

“…Although pathogen removal has been recently demonstrated to occur during transit in the worm gut (Soobhany et al 2017) as well as during composting, combining vermicomposting to composting is the preferred process, because it favours the removal of pathogen microorganisms and increases organic matter decomposition rate (Frederickson et al 1997(Frederickson et al , 2007Wang et al 2014). Wastes are composted during a few weeks, until the end of the thermophilic phase.…”

Section: The Vermicomposting Processmentioning

confidence: 99%

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Composting with additives to improve organic amendments. A review

Barthod

Rumpel

Dignac

2018

Agron. Sustain. Dev.

198

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Composting and vermicomposting are sustainable strategies to transform organic wastes into organic amendments, valuable as potting media or soil conditioner. However, the negative aspects of these processes are emissions of greenhouse gases and odorous molecules and final product potentially containing toxic compounds. These negative aspects can be limited through the addition of organic, inorganic or biological additives to the composted or vermicomposted mixture. The aims of this review are (1) to present the main characteristics of composting and vermicomposting processes with and without additives, (2) to show the influence of additives on greenhouse gas emissions during waste degradation and (3) to report the effects of additives on the properties of the final products (heavy metal and nutrient contents), in view of their use as a soil conditioner or potting media. Finally, the feasibility and potential environmental benefits of co-composting and co-vermicomposting are discussed. Our results show that additives affect composting parameters such as temperature, pH and moisture and thus have an impact on the composting process. They may be used to reduce gas emissions and mobility of mineral ions. The various additives have contrasting effects on the quality of the final product and its impact on soil quality. The use of worms and additives seems to increase plant available nutrient contents, while decreasing N leaching, heavy metal mobility and composting time. Cocomposting and co-vermicomposting strategies need to be locally optimised, involving the generated amendments in a circular economy to improve sustainability of agricultural systems.

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Section: The Composting Processmentioning

confidence: 99%

Section: The Vermicomposting Processmentioning

confidence: 99%

Composting with additives to improve organic amendments. A review

Barthod

Rumpel

Dignac

2018

Agron. Sustain. Dev.

198

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“…The heap of organic waste undergoes microbial degradation that converts organic waste into compost. During composting, organic material passes through the thermophilic phase (45-65°C) that kills numerous pathogenic microorganisms due to release of CO 2 , water and heat (Lung et al 2001;Alidadi et al 2005;Mehta et al 2014;Soobhany et al 2017). Several physio-chemical parameters affect the composting process such as temperature, moisture, pH, particle size, aeration and electrical conductivity (Li et al 2013;Juárez et al 2015;Onwosi et al 2017).…”

Section: Traditional Organic Compostingmentioning

confidence: 99%

“…The use of organic manure can increase soil carbon or nitrogen levels in twofold in about 40 years (Jenkinson et al 1994;Powlson 1994;Tilman 1998). Traditional thermophillic composting is a low-energy, costefficient and sustainable approach to address the issues of soil fertility, environmental pollution, waste management and reducing chemical fertiliser inputs (Ndegwa and Thompson 2001;Nasiru et al 2013;Soobhany et al 2017). Composting is an important tool to social, ecological and economic sustainability (Scarpato and Simeone 2013; Proietti et al 2016).…”

Section: Traditional Organic Compostingmentioning

confidence: 99%

Traditional agriculture: a climate-smart approach for sustainable food production

Singh

2017

Energ. Ecol. Environ.

227

118

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Sustainable food production is one of the major challenges of the twenty-first century in the era of global environmental problems such as climate change, increasing population and natural resource degradation including soil degradation and biodiversity loss. Climate change is among the greatest threats to agricultural systems. Green Revolution though multiplied agricultural production several folds but at the huge environmental cost including climate change. It jeopardized the ecological integrity of agroecosystems by intensive use of fossil fuels, natural resources, agrochemicals and machinery. Moreover, it threatened the age-old traditional agricultural practices. Agriculture is one of the largest sectors that sustain livelihood to maximum number of people and contribute to climate change. Therefore, a climate-smart approach to sustainable food production is the need of hour. Traditional agriculture is getting increased attention worldwide in context of sustainable food production in changing climate. The present article advocates traditional agriculture as a climate-smart approach for the sustainable food production and also deliberates the correlation between climate change and agriculture.

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“…Thermophilic composting results in sanitization of organic wastes and elimination of toxic compounds [63]. Although pathogen removal occurs during transit in the worm gut [64] but thermophilic composting prior to vermicomposting is advisable to avoid the earthworm mortality. Then, after some days of high temperature, pre-mature compost is cooled by spreading it as thin layers on vermicomposting beds.…”

Section: Conventional Steps Involved In Vermicompostingmentioning

confidence: 99%

Vermicomposting: An Effective Option for Recycling Organic Wastes

Kaur¹

2020

Organic Agriculture

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Urbanization and industrialization resulted in rapid increase in volume of solid waste; its management has become one of the biggest problems today. Solid wastes can be disposed off by methods like land filling, incineration, conversion into biogas, recycling, and composting, but its overproduction has led to inappropriate disposal practices such as their indiscriminate and inappropriately timed application to agricultural fields that ultimately leads to water and soil pollution. However, if handled properly, these organic wastes can be used for vermicomposting; it is an effective recycling technology that improves the quality of the products which is disinfected, detoxified, and highly nutritive. It is a low cost, eco-biotechnological process of waste management in which earthworms are used to cooperate with microorganisms in order to convert biodegradable wastes into organic fertilizer. Earthworms excreta (vermicast) is a nutritive organic fertilizer rich in humus, NPK, micronutrients, beneficial soil microbes; nitrogen-fixing, phosphate solubilizing bacteria, actinomycets, and growth hormones auxins, gibberlins and cytokinins, is a suitable alternative to chemical fertilizers, being an excellent growth promoter and protector for crop plants. Thus, vermiculture not only results in management of soild waste but also produces excellent nutrient enriched vermicompost. Vermicompost is beneficial for sustainable organic agriculture and maintaining balanced ecosystem.

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Inactivation of bacterial pathogenic load in compost against vermicompost of organic solid waste aiming to achieve sanitation goals: A review

Cited by 88 publications

References 123 publications

Composting with additives to improve organic amendments. A review

Composting with additives to improve organic amendments. A review

Traditional agriculture: a climate-smart approach for sustainable food production

Vermicomposting: An Effective Option for Recycling Organic Wastes

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