In-vessel composting system for converting food and green wastes into pathogen free soil amendment for sustainable agriculture

Pandey, Pramod Kumar; Vaddella, Venkata; Cao, Wenlong; Biswas, Sagor; Chiu, Colleen; Hunter, Steele

doi:10.1016/j.jclepro.2016.08.034

Cited by 67 publications

(17 citation statements)

References 44 publications

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“…Specific pathogen detection is difficult and time consuming, therefore total and fecal coliforms are used as indicators of pathogen microorganisms for sewage sludge utilization in agriculture (Xu et al, 2009;Epstein et al, 1976;Larney et al, 2003;Briancesco et al, 2008;Rashad et al, 2010;Topal et al, 2016). However, there is a growing public concern for compost-borne pathogens reaching to agricultural land by soil amendments (Pandey et al, 2016). The main drawbacks of composting include the inefficiency of composting process rate, thus 15-40 days of composting is recommended to eliminate pathogens (Dumontet et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

“…Composting time can be reduced and pathogen elimination can be achieved using in-vessel composting system. Pandey et al (2016) showed that using fixed temperature achieved by external heater (60 o C) in International Journal of Scientific and Technological Research www.iiste.org ISSN 2422-8702 (Online), DOI: 10.7176/JSTR/5-7-01 Vol.5, No.7, 2019 in-vessel system could provide more effective pathogens reduction and produce pathogen-free soil amendments in comparison with traditional composting systems. Their pilot-scale setting achieved compost sanitization in 8 -10 h using a feedstock consist of food waste, horse manure, palm-tree waste, and green waste.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Carbon/Nitrogen on Elimination of Coliforms during Composting of Sewage Sludge, Dairy Manure and Sawdust

2019

JSTR

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Composting is a solid waste management alternative to reduce potential hazards in the converting of sewage sludge into reusable material on land. But inefficiency of traditional composting process rate lowers its demand. In-vessel system could provide more effective pathogens reduction and produce pathogen-free soil amendments in comparison with traditional composting systems. In order to achieve successful composting process environmental factors such as temperature, moisture, aeration and nutrients should be sufficiently controlled. This study was undertaken to assess the effect of the carbon/nitrogen (C/N) ratio on reduction or elimination of total and fecal coliforms in co-composting of sewage sludge with dairy manure and sawdust using an in-vessel system under controlled conditions. Temperature, pH and C/N values were used for consideration of the stabilization of the composting process. In this study the minimum temperature of composting process was set to 40 oC by temperature controlled external heater. Initial mesophilic phase occurred within 2 days followed by the thermophilic phase, which lasted for about 10 days. Monitored parameters featured reaction trends to those obtained changes in the mesophilic, thermophilic and maturation phases. A high C/N reduction observed for high initial C/N mixtures (30 and 40) within 7 days of composting. Low initial C/N mixture (20) showed slightly C/N reduction during composting. A higher ratio of C/N preparations led to a higher stabilization rates but higher coliforms reduction achieved with low C/N ratios.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Carbon/Nitrogen on Elimination of Coliforms during Composting of Sewage Sludge, Dairy Manure and Sawdust

2019

JSTR

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“…Rotating drum composting is a recent development of aerobic treatment processes, in which the substrates are managed within a closed vessel constructed in such a way as to ensure proper agitation and aeration and resulting in a uniform and consistent end product . Drum composting is a high rate system, which can be easily controlled through the management of different process parameters, allowing flexibility in retention times even in extreme climatologic conditions .…”

Section: Introductionmentioning

confidence: 99%

Food Waste Composting in a High Rate Continuous Feed Drum Reactor: Startup and Carbon Balance Analysis

Zarkadas

Angeli

Sainis

et al. 2018

CLEAN Soil Air Water

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The objective of this work is to investigate the composting of food waste in a continuous feed pilot scale reactor. Food waste, collected daily from university restaurants and canteens, are fed to the composting unit together with wood pellets. During the continuous process the maximum temperature reaches thermophilic levels. The carbon dioxide emission factor is 216 g C kg−1 total solids (TS) per day, while the average oxygen uptake rate is 1245 ± 957 g O2 kg−1 TS per day both based on the daily waste input. The average daily cumulative carbon closure is calculated as −12.5% (±35.2%) with ideal closure of 0%. Inoculation of the final product shows no formation of colonies for total coliforms, Escherichia coli, Enterococcus (E. faecalis, E. faecium, E. durans, and E. hirae) and Pseudomonas (P. aeruginosa). The average respiration activity (AT4) was 12.1 ± 2.14 mg O2 g−1 TS, indicating that the end product is not quite stable and some maturation time may be required, prior to its application as an organic fertilizer.

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“…Composting, as a biological waste transformation technique, can be defined as decomposition and stabilization of organic matters, commonly in the presence of oxygen, for production of stable and free-of-pathogen final product that can be beneficially applied to land (Haug 1993) for soil amendment (Ch'ng et al 2013;Mhindu et al 2013;Pandey et al 2016). Generation of renewable energy (Irvine et al 2010), saving lands by increasing lifetime of landfills (Hoornweg et al 1999) and reduction of transportation costs (Larney et al 2006;Mandal et al 2014) are reported as other benefits of composting.…”

Section: Introductionmentioning

confidence: 99%

In-vessel co-composting of yard waste and food waste: an approach for sustainable waste management in Cameron Highlands, Malaysia

Malakahmad

Idrus

Abualqumboz

et al. 2017

Int J Recycl Org Waste Agricult

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Purpose Huge amount of yard waste is produced in cities with excessive agricultural activities like Cameron Highlands, Malaysia where most of the time the yard waste is being managed poorly and big portion of it ends in dump sites. Therefore, this study aims to evaluate the applicability of converting yard waste generated in Cameron Highlands Malaysia into high-quality and fast compost via in-vessel method. Methods In-vessel composting technique was applied for speedy biotransformation of yard waste. Addition of food waste, effective microorganisms (EM) and Shimamoto Enzyme Ò (SE) were investigated for improvement of compost quality. Four compositions of feedstock with different yard waste (YW) and food waste (FW) ratios were tested. The compositions were 70%YW ? 30%FW, 80%YW ? 20%FW, 90%YW ? 10%FW and 100%YW. Physicochemical properties of compost including pH, moisture content and C/N ratio were monitored throughout the experiment. Furthermore, quality of compost and its potential for direct application after production were evaluated based on germination index (GI) and nutrient content (NPK). Results The compost samples had pH ranging from 7 to 9 and moisture content of 15.45-32.13%. Initial C/N ratio of all feedstock was decreased throughout the composting process by more than 50%. Seed germination test showed that only 70%YW ? 30%FW feedstock produced immature compost with GI \ 80%. The highest GI of 130% was obtained when FW represented in 10% of the feedstock with addition of EM. Average concentrations of nitrogen, phosphorus and potassium were 1.73, 1.21 and 1.66% in case of EM additive and 1.47, 0.56 and 1.74% in case of SE additive. Conclusion Application of in-vessel composting can improve solid waste management in Cameron Highlands, Malaysia and yield a high-demand product. The approach used in this study can be a good practice for the societies have difficulties in managing their yard waste.

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In-vessel composting system for converting food and green wastes into pathogen free soil amendment for sustainable agriculture

Cited by 67 publications

References 44 publications

Effect of Carbon/Nitrogen on Elimination of Coliforms during Composting of Sewage Sludge, Dairy Manure and Sawdust

Effect of Carbon/Nitrogen on Elimination of Coliforms during Composting of Sewage Sludge, Dairy Manure and Sawdust

Food Waste Composting in a High Rate Continuous Feed Drum Reactor: Startup and Carbon Balance Analysis

In-vessel co-composting of yard waste and food waste: an approach for sustainable waste management in Cameron Highlands, Malaysia

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