Vermicomposting technology as a tool for nutrient recovery from kitchen bio-waste

Hanč, Aleš; Plíva, Petr

doi:10.1007/s10163-013-0127-8

Cited by 38 publications

(32 citation statements)

References 23 publications

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“…In addition, after 14 days of fermentation, the material was also softer, more workable, and palatable for earthworms. Differences in properties between pre-composted and non-pre-composted feedstock are described in Hanc and Pliva (2013) and Sinha et al (2002). Based on literature and practical experience, the temperature for the development of earthworm populations should not exceed 25°C (Sinha et al 2008).…”

Section: Pre-composting Of Feedstockmentioning

confidence: 99%

Processing separated digestate by vermicomposting technology using earthworms of the genus Eisenia

Hanč

Vašák

2014

Int. J. Environ. Sci. Technol.

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In the current study, pre-composting and subsequent vermicomposting of separated digestate (also called separated biogas plant slurry) were verified to improve its properties for use as a soil conditioner. Increasing the proportion of straw in combination with separated digestate had a positive effect on reducing both weight and volume during vermicomposting. The pH value decreased and was found to be between 7.3 and 7.7 in the final vermicomposts. Due to a loss in organic matter, the total content of macro-elements increased at the end of vermicomposting with the exception of calcium. Similarly, the available contents of phosphorus and potassium increased, which was positive in terms of the use of vermicompost for agricultural purposes. After 5 months of vermicomposting, the earthworm biomass increased from 282 to 896 % depending on the treatment. The best results were achieved during the vermicomposting of a mixture of straw (25 vol %) with separated digestate (75 vol %).

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Section: Pre-composting Of Feedstockmentioning

confidence: 99%

Processing separated digestate by vermicomposting technology using earthworms of the genus Eisenia

Hanč

Vašák

2014

Int. J. Environ. Sci. Technol.

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“…From the context of this study, we believe two types of ratios are important to understand social perspective of utilization of CBM as transport fuel. These ratios are determined using Equations (3) and (4).…”

Section: Sustainable Value Of Alternative Perspectives Of Utilizing Cmentioning

confidence: 99%

“…Vermicomposting is a biologically driven process where organic waste is converted to nutrient-rich soil using worms. This vermicompost product can be used as biofertilizer, which acts as a substitute for chemically produced inorganic fertilizers [4,5]. However, vermicomposting is a time-consuming and maintenance-intensive process with a low resistance to microbial contamination [4,5].…”

Section: Introductionmentioning

confidence: 99%

“…This vermicompost product can be used as biofertilizer, which acts as a substitute for chemically produced inorganic fertilizers [4,5]. However, vermicomposting is a time-consuming and maintenance-intensive process with a low resistance to microbial contamination [4,5]. On the other hand, from a waste collection perspective, incineration is an attractive choice because there is no need for segregation of food waste at the source.…”

Section: Introductionmentioning

confidence: 99%

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Social Cost Benefit Analysis of Operating Compressed Biomethane (CBM) Transit Buses in Cities of Developing Nations: A Case Study

et al. 2019

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Cities in developing nations have to deal with two significant sustainability challenges amidst rampant urbanization. First, consumer-generated food waste is increasing monumentally since open dumping is still followed as a predominant practice, the negative environmental externalities associated with food waste disposal are growing beyond manageable proportions. Second, the dependency on conventional fuels like diesel to operate transit buses, which is one of the major causes for deteriorating urban air quality. A nexus established between food waste management and operation of transit buses can improve the sustainable performance of cities in developing nations. In this study, a Life Cycle Assessment (LCA) supported Social Cost-Benefit Analysis (SCBA) is performed by considering a hypothetical scenario of establishing a large food waste treating biomethanation plant in Mumbai, India. The food waste from the city is transported to a biomethanation plant where it is subjected to an anaerobic digestion (AD) process. The biogas produced as a byproduct is upgraded to compressed biomethane (CBM) and used as a vehicle fuel to operate transit buses within the city. The LCA results suggest that CBM buses can reduce greenhouse gas and particulate matter emissions by 60% compared to diesel or compressed natural gas (CNG) buses. Fossil depletion potential of CBM buses is 98% lower than diesel, suggesting CBM’s importance in decoupling developing nations dependency on imported crude oil. The SCBA considers: (a) costs to stakeholders, i.e., fees for open dumping of food waste and cost of fuel for operating transit buses; and (b) social costs incurred by negative environmental externalities (obtained by monetizing LCA results) resulting from both, open dumping as well as fuel combustion. SCBA results indicate that the food waste-based CBM model can save 6.86 billion Indian rupees (USD 99.4 million) annually for Mumbai. The savings are made due to a reduction in stakeholder’s costs (fuel) coupled with societal, i.e., environmental externality costs if entire transit bus fleet operates on CBM fuel instead of conventional fuel mix (33:67 diesel to CNG) currently used. Although the study is performed for Mumbai, the results will be replicable to any city of developing nations facing similar issues.

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“…Efficiency of kitchen waste can be enhanced when its pre-composting is done for the period of 2 weeks at temperature <25 o C. The resulting pre-compost has higher value of nutrients like N, P & K i.e. 12, 66 and 40% respectively while the end product vermicompost has range values of N, P & K 2.2-3, 0.4-2.9 and 1.7-2.5 on % dry basis respectively (Hanc & Pliva, 2013). Food industry meets the nutritional demands but also produces the tons of solid waste which badly pollutes the soil health and water reservoirs.…”

Section: ) Shortcomingsmentioning

confidence: 99%

Innovative Processes and Technologies for Nutrients Recovery from Wastes: a Comprehensive Review

Ahmed¹,

Ahmad²,

Hassan³

et al. 2019

Preprint

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Nutrients management is a mainspring in agricultural systems for sustained productivity, economy sustainability and environmental quality. Excessive and lesser nutrient application caused environmental pollution and reduced production, respectively impacting socio-economics of the entire ecosystems. Sustainable agricultural production thus demands supplementation of nutrients either through natural processes, application of animal by-products, and mineral fertilizers to crop fields. Technology application for treating useless agricultural wastes into useful source is a management strategy that prevents environment pollution. Crude animal manures triggered soil degradation, attenuation air and water quality, and resulted in higher concentrations of heavy metals. Primary nutrients, i.e., nitrogen, phosphorus and potassium are used globally and are nonrenewable. Augmented upsurge in prices of inorganic fertilizers and required discharge restrictions on nutrient has stimulated the technological developments including biochar, composting, vermicomposting, composting with biochar, pyrolysis, forward osmosis, and electro-dialysis to recover nutrients. Therefore, outlining the research gaps considering the present and imminent potential of these technologies for adaptation of nutrient recycling is of great importance. Thus, it's need of an hour to fix our environment and for that scientists are trying to introduce and renovate the technologies which have immense potential to mitigate the negative effects of technology adversities on our environment.

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Vermicomposting technology as a tool for nutrient recovery from kitchen bio-waste

Cited by 38 publications

References 23 publications

Processing separated digestate by vermicomposting technology using earthworms of the genus Eisenia

Processing separated digestate by vermicomposting technology using earthworms of the genus Eisenia

Social Cost Benefit Analysis of Operating Compressed Biomethane (CBM) Transit Buses in Cities of Developing Nations: A Case Study

Innovative Processes and Technologies for Nutrients Recovery from Wastes: a Comprehensive Review

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