A new method for conservation of nitrogen in aerobic composting processes

Jeong, Yeon-Koo

doi:10.1016/s0960-8524(01)00062-1

Cited by 112 publications

(43 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…On its own, there is too little organic content to achieve thermophilic conditions (i.e., temperatures above 55°C) during composting, which is necessary for complete pathogen destruction. Co-composting with carbon-rich materials, such as oil palm empty fruit bunches (EFB) and cocoa pod husks (CPH), can impart two key benefits: (a) enabling of thermophilic temperatures and (b) prevention of nitrogen volatilization (Jeong and Kim 2001). Previous composting studies in Ghana experimented with co-composting DFS with municipal solid wastes and sawdust (Kone et al 2007;Cofie et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Effects of co-composting of faecal sludge and agricultural wastes on tomato transplant and growth

Nartey

Amoah

Ofosu-Budu

et al. 2017

Int J Recycl Org Waste Agricult

View full text Add to dashboard Cite

Purpose Faecal sludge (FS) has been co-composted with many organic solid wastes globally. Agricultural wastes, such as oil palm empty fruit bunches (EFB) and cocoa pod husks (CPH), have received very little research attention as far as combining with FS is concerned. This study aimed at co-composting these wastes at different ratios to produce safe compost for use as soilless medium for raising tomato transplants. Methods Dewatered FS (DFS) was mixed with shredded EFB and CPH at five different ratios: 1DFS:1EFB, 1DFS:1CPH, and DFS:EFB:CPH in ratios of 1:1:1, 2:1:1, and 2:2:1 and composted for 3 months. Select physicochemical parameters and pathogens were monitored every fortnightly and 3 weeks, respectively. Results Maximum temperatures obtained ranged 46.8-54.5°C. Though these temperatures were lower than sanitizing temperatures prescribed by USEPA, no E. coli was found in any of the piles at the end of composting. The ratio 2DFS:2EFB:1CPH was found to be the safest formulation and hence was used to grow tomato under greenhouse conditions. Tomato seeds were sown in three different growing media: 100% FS-based compost, 100% rice husk biochar, and 50% FS-based compost-50% rice husk biochar mix. Conclusion Results showed that FS-based compost was a suitable growing medium for tomato. Further studies into the optimal rate and frequency of application of compost teas on tomato are recommended.

show abstract

Section: Introductionmentioning

confidence: 99%

Effects of co-composting of faecal sludge and agricultural wastes on tomato transplant and growth

Nartey

Amoah

Ofosu-Budu

et al. 2017

Int J Recycl Org Waste Agricult

View full text Add to dashboard Cite

show abstract

“…Este é um comportamento comumente observado em pilhas de compostagem e revela elevada atividade microbiana em todos os tratamentos estudados, independente do valor inicial da relação C:N. Comportamento semelhante também foi observado por autores como Heerden et al (2002) e Jeong & Kim (2001). Observa-se que, após aproximadamente 60 dias de incubação, as temperaturas das pilhas se aproximam da temperatura ambiente indicando a estabilização dos compostos.…”

Section: Resultsunclassified

Compostagem de misturas de capim-elefante e torta de mamona com diferentes relações C:N

Leal

Guerra

Espíndola

et al. 2013

Rev. bras. eng. agríc. ambient.

View full text Add to dashboard Cite

RESUMOA viabilidade econômica da compostagem está relacionada à utilização de matérias-primas abundantes, de custo competitivo e com níveis reduzidos de contaminação química e biológica. Seguindo esses critérios identifica-se a biomassa de capim-elefante e a torta de mamona como materiais bastante promissores. Objetivou-se, neste trabalho, determinar as características dos produtos finais e os índices de eficiência do processo de compostagem em três formulações da mistura de capim-elefante (Pennisetum purpureum) e torta de mamona com diferentes relações C:N, além de um tratamento de referência com a mistura de capim-elefante e biomassa de Crotalaria juncea. A compostagem da mistura de capim-elefante com torta de mamona possibilitou a obtenção de material orgânico estabilizado com elevado teor de N, sem a necessidade de utilização de qualquer inoculante ou aditivo. Os compostos se estabilizaram aproximadamente aos 60 dias após o início da compostagem e apresentaram reduções de cerca de 50% de sua massa e 65% de seu volume, após 90 dias de compostagem. Compostos com os menores valores iniciais de relação C:N apresentaram as maiores perdas proporcionais de N durante a compostagem. Palavras-chave: adubo orgânico, substrato, composto orgânicoComposting of elephant grass and castor bean cake mixed with different C:N ratios ABSTRACT The economic viability of composting is related to the use of abundant raw materials, with competitive cost and low levels of chemical and biological contamination. Following these criteria, the biomass of elephant grass and castor cake are identified as very promising materials. The aim of this study was to determine the characteristics of end products and efficiency indices of the composting process in three formulations of the mixture of elephant grass (Pennisetum purpureum) and castor bean cake with different C: N ratios, and a reference treatment with the mixture of elephant grass biomass and Crotalaria juncea. The composting of the mixture of elephant grass with castor bean cake allows to obtain stabilized organic material, with high N content, with no need to use any inoculant or additive. Composts stabilized at approximately 60 days after initiation of composting provided reductions of approximately 50% of its mass and 65% of its volume after 90 days of composting. Composts with smaller initial C:N ratios presented greater proportional loss of nitrogen during composting.

show abstract

“…Thermometer inserted for five minutes into the compost. Compost pH was measured every week during the composting period, approximately 10 g of compost were put in a 500 mL beaker and add 50 mL of sterile water, then shaken for 30 minutes (Jeong and Kim, 2001). …”

Section: Methods and Data Analysismentioning

confidence: 99%