Farmer attitudes and perceptions to the re–use of fertiliser products from resource–oriented sanitation systems – The case of Vellore, South India

Simha, Prithvi; Lalander, Cecilia; Vinnerås, Björn; Ganesapillai, Mahesh

doi:10.1016/j.scitotenv.2017.01.044

Cited by 71 publications

(60 citation statements)

References 19 publications

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“…Although 46% of small-scale farmers interviewed in India were found to respond positively [44], and similar results were found in Uganda [45], Sanergy and SOIL deemed that smallholder farmers were not viable customer targets for human excreta derived fertilizer in Kenya or Haiti. Other customers such as landscaping applications, agroforestry or plant nurseries are often more promising for compost sales [5,46].…”

Section: Government Involvement To Facilitate Business Viabilitymentioning

confidence: 62%

Realizing the Circular Economy for Sanitation: Assessing Enabling Conditions and Barriers to the Commercialization of Human Excreta Derived Fertilizer in Haiti and Kenya

2019

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Efficient fecal sludge management solutions are especially challenging in densely populated urban informal settlements, where space is limited and land tenure uncertain. One solution is to collect and treat human excreta to produce soil conditioners for use in agriculture, through container-based sanitation, thus realizing the circular economy for sanitation. This study focused on container-based sanitation ventures that produce and sell fertilizers from human excreta. Stakeholder interviews showed that challenges faced by these ventures were similar: unclear regulations on the use of fertilizers derived from source-separated excreta, undeveloped markets for organic fertilizers, difficulties in securing secondary sources of organic matter for composting as well as complex transport and distribution logistics. The findings of this study emphasized the need for clear policies with respect to human excreta derived fertilizer, as well as institutional involvement in order to incentivize the sale and use of human excreta derived fertilizer locally to ensure that sustainable and safely managed sanitation systems are available in urban areas.

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Section: Government Involvement To Facilitate Business Viabilitymentioning

confidence: 62%

Realizing the Circular Economy for Sanitation: Assessing Enabling Conditions and Barriers to the Commercialization of Human Excreta Derived Fertilizer in Haiti and Kenya

2019

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“…Studies have suggested that higher income may have a positive impact on willingness [39,42,44,47,48]. Different concerns were voiced by villagers in this study because the negative impact of income was stable in every group.…”

Section: Total Groupmentioning

confidence: 75%

Assessing willingness to pay for upgrading toilets in rural areas of Shaanxi and Inner Mongolia, China

Wu¹,

Li²,

Li³

et al. 2019

DWT

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Unsanitary toilets are recognized worldwide as a threat to ground water and public health. In this research, we investigated villagers' willingness to pay to upgrade toilets in Shaanxi and Inner Mongolia. The study was based on data from 558 questionnaires collected in December 2017 and January 2018. The villages and villagers were randomly chosen. We observed that 42% of the respondents were willing to pay to upgrade toilets, and the key factors that affected willingness were dissemination, concern, gender, living time, and satisfaction. In addition, villagers who lived with children were more sensitive to pollution, especially water pollution. These findings could help the Chinese government's toilet revolution mission succeed by identifying and targeting villagers with high willingness.

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“…urine have been promising (Martin et al, 2017) and sociological studies have indicated positive consumer acceptance (Simha et al, 2017;Brun, 2018).…”

Section: Compoundmentioning

confidence: 99%

Field Testing a Pilot-Scale System for Alkaline Dehydration of Source-Separated Human Urine: A Case Study in Finland

Simha

Karlsson

Viskari

et al. 2020

Front. Environ. Sci.

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Alkaline dehydration can treat human urine to produce a dry and nutrient-rich fertilizer. To evaluate the technology at pilot-scale, we built a prototype with capacity to treat 30 L urine d −1 and field tested it for the first time at a military training camp in Finland. We operated the system for 3 months and monitored the recovery of nutrients, end-product composition, physicochemical properties and energy consumption. Results revealed that the system received less urine than anticipated, but achieved high dehydration rates (30-40 L d −1 m −2), recovered 30 ± 6% N, and yielded end-products with 1.4% N, 0.9% P, and 8.3% K. However, we demonstrated that the system had potential to recover nearly 70% N and produce fertilizers containing 13.2% N, 2.3% P, and 6.0% K, if it was operated at the design capacity. The energy demand for dehydrating urine was not optimized, but we suggested several ways of reducing it. We also discussed concerns surrounding non-essential heavy metals, salts, and micropollutants, and how they can be overcome to safely recycle urine. Lastly, we pointed out the research gaps that need to be addressed before the technology can be implemented at larger scale.

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Farmer attitudes and perceptions to the re–use of fertiliser products from resource–oriented sanitation systems – The case of Vellore, South India

Cited by 71 publications

References 19 publications

Realizing the Circular Economy for Sanitation: Assessing Enabling Conditions and Barriers to the Commercialization of Human Excreta Derived Fertilizer in Haiti and Kenya

Realizing the Circular Economy for Sanitation: Assessing Enabling Conditions and Barriers to the Commercialization of Human Excreta Derived Fertilizer in Haiti and Kenya

Assessing willingness to pay for upgrading toilets in rural areas of Shaanxi and Inner Mongolia, China

Field Testing a Pilot-Scale System for Alkaline Dehydration of Source-Separated Human Urine: A Case Study in Finland

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