Your search found 2 records
1 Nikiema, Josiane; Cofie, Olufunke; Impraim, Robert; Drechsel, Pay. 2012. Fortified excreta pellets for agriculture. Paper presented at the Second International Faecal Sludge Management Conference, Durban, South Africa, 29 October - 1 November 2012. 5p.
Excreta ; Agricultural production ; Fertilizers ; Composts ; Faeces ; Irradiation ; Pellets ; Starch crops ; Cassava ; Clay ; Moisture content / Ghana
(Location: IWMI HQ Call no: e-copy only Record No: H045351)
https://publications.iwmi.org/pdf/H045351.pdf
http://www.susana.org/docs_ccbk/susana_download/2-1624-nikiema.pdf
http://www.susana.org/docs_ccbk/susana_download/2-1624-nikiema.pdf
(0.34 MB)
This paper describes the pelletization process of fecal sludge-based fertilizers. The equipment used for the process was fabricated locally in Ghana. Each fertilizer product was individually used for the production of cylindrical pellets. From the current study, the binding material type (cassava starch, either pregelatinized or pretreated by gamma irradiation, or kaolin clay) and concentration (0 to 10 % in mass) as well as moisture content (20-47%) appeared to be the most critical factors during pellets production. It was noticed that the higher the binder concentration, the higher the stability of pellets. This study confirmed that cassava starch is a preferred binding material and that fixing its concentration at 1-3 % could be enough during the pelletization process. The pellets produced in this project had 7.5 to 7.7 mm in diameter, but their length distribution varied depending on the material used.
2 Santra, P. 2021. Performance evaluation of solar PV pumping system for providing irrigation through micro-irrigation techniques using surface water resources in hot arid region of India. Agricultural Water Management, 245:106554. (Online first) [doi: https://doi.org/10.1016/j.agwat.2020.106554]
Solar energy ; Photovoltaic systems ; Pumping ; Irrigation water ; Microirrigation ; Irrigation systems ; Arid zones ; Water resources ; Surface water ; Greenhouse gas emissions ; Carbon footprint ; Techniques ; Irradiation ; Sprinklers ; Performance evaluation ; Costs / India / Rajasthan / Jodhpur
(Location: IWMI HQ Call no: e-copy only Record No: H050157)
(8.99 MB)
Solar PV pumping system for irrigation purpose has been gained importance in recent times considering its environmental friendly characteristics and to reduce the dependency on fossil fuel based energy sources for pumping. In general, 3 HP and 5 HP capacity solar PV pumping systems are used for irrigation purpose in India. However, large capacity pumps are often also used to lift groundwater resources, which may lead to further depletion of ground water table. Keeping in mind these constraints, performance of small sized solar PV pumps of 1 HP capacity was evaluated to lift and irrigate shallow water resources using pressurized irrigation systems. Experimental observations revealed that 1 HP solar PV pumping system either AC or DC type could successfully be used to operate mini-sprinklers, micro-sprinklers and drippers with good irrigation uniformity. Further, a self-sustainable module for sustainable use of water and energy was designed in which both water and energy are harvested and recycled. Life cycle cost analysis showed that 1 HP (DC) solar PV pumping system was slightly cheaper than corresponding AC pumping system. Even, the carbon footprint of 1 HP solar PV pumping systems is quite lower (0.009 kg CO2-eq ha-mm-1) than grid-connected electric pumps (1.214 kg CO2-eq ha-mm-1) and diesel operated pumps (0.382 kg CO2-eq ha-mm-1). Therefore, 1 HP solar PV pumping systems could be a feasible solution for small and marginal farmers in the context of water scarcity situation in near future and to mitigate the climate change effects in agricultural farms.
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