Decentralized Anaerobic Digestion Technology for Improved Management of Human Excreta in Nigeria

Onwosi, Chukwudi O.; Igbokwe, Victor C.; Ezugworie, Flora N.

doi:10.1007/978-981-19-4921-0_8

Cited by 3 publications

(3 citation statements)

References 83 publications

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“…Due to technical expertise, HE is particularly hard to deal with in Africa and is slowly being introduced in the continent; especially in Nigeria, Kenya and Rwanda (Emetere et al, 2021;Zwart & Langeveld, 2010). To maintain public health and safety and ensure a clean environment, Onwosi et al (2022) proposed a cost-effective decentralized anaerobic digestion (DAD) scheme, feasible for the Nigerian HE management system. In the country, Nayem ( 2023) reported that estimates of biogas derived from HE is around 2.6 billion m 3 /yr -equivalent to 57.2×10 9 MJ of energy annual generation.…”

Section: Promotion Of He Biogas Technologymentioning

confidence: 99%

Fecal Sludge Recycling to Useful Products: Environmental Concerns, Viability and Potential

Abdulhalim,

Ahmed,

Moges

et al. 2023

ARI

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Biofertilizer, biogas and the chemical substances in those two, which are generated as a result of several treatment methods fecal sludge (FS) are usually subjected to, can be recovered for diverse applications. The treatment methods are classified into traditional and innovative methods. FS sludge impacts the environment negatively and one of the most adopted methods for its treatment from toilets where they originate, are composting and anaerobic digestion to recover biogas and organic fertilizer. FS potential for biogas production has been critically examined here using literature sources. It is discovered that FS is not largely favored as a means of recovering bioenergy in most parts of the world due to hygiene concerns, even though it is one of the most abundant organic materials for bioenergy recovery through anaerobic digestion. This work hence studied the factors hindering FS recycling and reuse, which it convincingly addresses. The work also demonstrates ways FS can be safely collected and digested to useful products and make a case for future investment in the sector by relevant bodies due to its feasibility, profitability and environmental-friendliness. Implementation of a system that recovers FS from latrines of households and public places and converts them to useful products are therefore recommended.

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Section: Promotion Of He Biogas Technologymentioning

confidence: 99%

Fecal Sludge Recycling to Useful Products: Environmental Concerns, Viability and Potential

Abdulhalim,

Ahmed,

Moges

et al. 2023

ARI

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show abstract

“…AD is also another effective method for human and animal waste valorization [11]. Several studies have reported that human or animal waste could be an 3 of 48 effective source of energy or nutrients [12][13][14][15]. Hunter and Deshusses developed nitrification and denitrification filters to post-treat human waste-derived digestate so that they can efficiently recover nutrients that may be used as fertilizer [5].…”

Section: Introductionmentioning

confidence: 99%

Pathways for the Valorization of Animal and Human Waste to Biofuels, Sustainable Materials and Value-Added Chemicals

Okolie¹,

Jimoh²,

Akande³

et al. 2023

Preprint

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Human and animal waste, including waste products originating from human or animal digestive systems such as urine, feces, and animal manure, have constituted a nuisance to the environment. Inappropriate disposal and poor sanitation of human and animal waste often cause negative impacts on human health through contamination of the terrestrial environment, soil, and water bodies. Therefore, it is necessary to convert these wastes into useful resources to mitigate their adverse environmental effect. The present study provides an overview and research progress of different thermochemical and biological conversion pathways for the transformation of human- and animal-derived waste into valuable resources. The physicochemical properties of human and animal waste are meticulously discussed as well as nutrient recovery strategies. In addition, a bibliometric analysis is provided to identify the trends in research and knowledge gaps. The results reveal that the U.S.A, China and England are the dominant countries in the research areas related to resource recovery from human or animal waste. In addition, researchers from the University of Illinois, the University of California Davis, the Chinese Academy of Science and Zhejiang University are front runners in research related to these areas. Future research should be centred on developing technologies for the on-site recovery of resources, exploring integrated resource recovery pathways, and exploring different safe waste processing methods.

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“…AD is also another effective method for human and animal waste valorization [9]. Several studies have reported that human or animal waste could be an effective source of energy or nutrients [10][11][12][13]. Hunter and Deshusses [3] developed nitrification and denitrification filters to post-treat human waste-derived digestate, so that they can efficiently recover nutrients that may be used as fertilizer [3].…”

Section: Introductionmentioning

confidence: 99%

Pathways for the Valorization of Animal and Human Waste to Biofuels, Sustainable Materials, and Value-Added Chemicals

et al. 2023

View full text Add to dashboard Cite

Human and animal waste, including waste products originating from human or animal digestive systems, such as urine, feces, and animal manure, have constituted a nuisance to the environment. Inappropriate disposal and poor sanitation of human and animal waste often cause negative impacts on human health through contamination of the terrestrial environment, soil, and water bodies. Therefore, it is necessary to convert these wastes into useful resources to mitigate their adverse environmental effect. The present study provides an overview and research progress of different thermochemical and biological conversion pathways for the transformation of human- and animal-derived waste into valuable resources. The physicochemical properties of human and animal waste are meticulously discussed, as well as nutrient recovery strategies. In addition, a bibliometric analysis is provided to identify the trends in research and knowledge gaps. The results reveal that the USA, China, and England are the dominant countries in the research areas related to resource recovery from human or animal waste. In addition, researchers from the University of Illinois, the University of California Davis, the Chinese Academy of Sciences, and Zhejiang University are front runners in research related to these areas. Future research could be extended to the development of technologies for on-site recovery of resources, exploring integrated resource recovery pathways, and exploring different safe waste processing methods.

show abstract

Decentralized Anaerobic Digestion Technology for Improved Management of Human Excreta in Nigeria

Cited by 3 publications

References 83 publications

Fecal Sludge Recycling to Useful Products: Environmental Concerns, Viability and Potential

Fecal Sludge Recycling to Useful Products: Environmental Concerns, Viability and Potential

Pathways for the Valorization of Animal and Human Waste to Biofuels, Sustainable Materials and Value-Added Chemicals

Pathways for the Valorization of Animal and Human Waste to Biofuels, Sustainable Materials, and Value-Added Chemicals

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