Co-composting of solid waste and fecal sludge for nutrient and organic matter recovery

Cofie, Olufunke O.; Nikiema, Josiane; Impraim, Robert; Adamtey, Noah; Paul, Johannes G.; Koné, Daouda

doi:10.5337/2016.204

Cited by 39 publications

(32 citation statements)

References 138 publications

(207 reference statements)

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“…This holds especially true in urban areas where on-site storage of FS is the main sanitation option for most households, and the proper treatment of removed sludge is often lacking [6]. Since FS has a higher N content, it increases its value and possible usage as a fertilizer [7].…”

Section: Introductionmentioning

confidence: 99%

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Impact of Fecal Sludge and Municipal Solid Waste Co-Compost on Crop Growth of Raphanus Sativus L. and Capsicum Anuum L. under Stress Conditions

et al. 2017

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Co-composted dewatered faecal sludge (FS) with organic fractions of municipal solid waste (MSW) has a high potential to be used as an agricultural resource in Sri Lanka. In addition to options for cost recovery in waste management, closing the nutrient and carbon cycles between urban and rural areas, substitution of mineral fertilizers, reduced pollution. and the restoration of degraded arable land are possible with important benefits. Up to now little is known about the usage of FS-MSW as fertilizer and it needs to be studied in order to achieve a better understanding and generate application recommendations. The aim of these experiments has been to evaluate the possibility of substituting mineral fertilization. Two field experiments were conducted on sandy loam to assess the effects of MSW compost and FS-MSW co-compost, its pelletized forms, and mineral-enriched FS-MSW on crop growth. As a short-term crop Raphanus sativus "Beeralu rabu" (radish) was studied for 50 days in a randomized complete block design (RCDB). Results show that, under drought conditions, FS-MSW co-compost increased the yield significantly, while MSW and FS-MSW compost enabled the highest survival rate of the plants. Similarly, the second field trial with a long-term crop, Capsicum anuum "CA-8" (capsicum), was planted as RCBD, using the same treatments, for a cultivation period of 120 days. Results display that during a drought followed by water saturated soil conditions co-compost treatments achieved comparable yields and increased the survival rate significantly compared to the control, fertilized with urea, triple super phosphate, and muriate of potash. Cost-benefit analysis (CBA) revealed that pelletizing decreased the monetary benefits if only fertilizer value is considered. It can be concluded that, under drought and water stress, co-compost ensures comparable yields and enables more resistance, but might not be economical viable as a one-crop fertilizer. These findings need to be validated with further trials under different climate regimes and soils.

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Section: Introductionmentioning

confidence: 99%

“…Dewatered faecal sludge (FS), on the other hand, increases the N content and, therefore, provides a possible fertilizer resource for agricultural practices because of its higher N content of 3-6%, if added to the composting process [6].…”

Section: Introductionmentioning

confidence: 99%

Impact of Fecal Sludge and Municipal Solid Waste Co-Compost on Crop Growth of Raphanus Sativus L. and Capsicum Anuum L. under Stress Conditions

et al. 2017

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“…The operators of composting sites are cautious about accepting feed materials for composting process that will ensure that the finished compost product will meet requirements. They also give indicators to assess compost maturity level [33]. Second, the following issues regarding compost need to be evaluated and farmers, organic fertilizer companies, and related managers should be cautioned.…”

Section: Discussionmentioning

confidence: 99%

Title “Organic Fertilizers” in Vietnam’s Markets: Nutrient Composition and Efficacy of Their Application

Quynh

Shima

2018

Sustainability

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Organic fertilizers have recently been gaining popularity; however, their governance is not completely assessed in developing countries. This study investigated the nutrient composition of so-called organic fertilizers in Vietnam's markets and issues related to their production, and evaluated their potential to contaminate the groundwater. We analyzed the physicochemical properties of 12 domestic and four imported products of the fertilizers, and conducted a cultivation experiment in sandy soil with the fertilizer applied at a rate of 200 mg N kg −1 soil using an automatic watering apparatus in a greenhouse. We further studied the production of an "organic fertilizer" from coffee by-products. The nutrient content greatly varied among domestic products, whereas they were quite similar among imported products. The product packaging of the collected samples lacked information regarding raw materials. Two thirds of the domestic products contained over 30% of the total N in the inorganic form, implying that the N content dramatically increased in the fertilizers rather than in their supposed raw materials. The stages involved in the production were composting, the addition of extra soil as a bulking agent, and the mixing-in of chemical substances to increase the nutrient content before packing. The remarkably high ratio of inorganic N to total N was attributed to excessive N leaching from soil by the application of domestic fertilizers. These results suggested the need for quality criteria guidelines for organic fertilizers in Vietnam that underline not only nutrient levels, but also the control of raw materials and production process of compost, because they are closely related to nutrient uptake and the leaching loss of nutrients.

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“…WLE has explored the technical feasibility and key institutional constraints through a review of 200 case studies across Asia, Africa and Latin America. The research has resulted in a set of promising business models for the safe reuse of human waste, and it is influencing national policies and programs, such as Ghana's fertilizer subsidy program and a new pelletized compost, Fortifer TM , which has been approved for commercial use (Rao et al 2016;Cofie et al 2016). In May 2017, a public-private partnership launched a co-composting plant designed to produce Fortifer TM in Tema, Ghana (IWMI 2017).…”

Section: Recovering Nutrients From Waste and Replenishing Soilsmentioning

confidence: 99%

Healthy soils for productive and resilient agricultural landscapes

Water¹

2017

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Healthy soils are essential for productive and resilient agricultural systems. They are also increasingly recognized as a means to mitigate climate change risks. While solutions for restoring degraded soils and landscapes do exist, improved knowledge and tools are needed to enhance their impacts over time and at scale. WLE has assessed the impacts of various land restoration initiatives and developed a range of tools to better tailor and target investments and interventions to local contexts

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Co-composting of solid waste and fecal sludge for nutrient and organic matter recovery

Cited by 39 publications

References 138 publications

Impact of Fecal Sludge and Municipal Solid Waste Co-Compost on Crop Growth of Raphanus Sativus L. and Capsicum Anuum L. under Stress Conditions

Impact of Fecal Sludge and Municipal Solid Waste Co-Compost on Crop Growth of Raphanus Sativus L. and Capsicum Anuum L. under Stress Conditions

Title “Organic Fertilizers” in Vietnam’s Markets: Nutrient Composition and Efficacy of Their Application

Healthy soils for productive and resilient agricultural landscapes

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