Bibliographic citations
Cruz, L., (2021). Compostabilidad de pelos de vacuno procedentes del proceso de pelambre con excretas humanas deshidratadas [Universidad Nacional Agraria La Molina]. https://hdl.handle.net/20.500.12996/4660
Cruz, L., Compostabilidad de pelos de vacuno procedentes del proceso de pelambre con excretas humanas deshidratadas []. PE: Universidad Nacional Agraria La Molina; 2021. https://hdl.handle.net/20.500.12996/4660
@mastersthesis{renati/244046,
title = "Compostabilidad de pelos de vacuno procedentes del proceso de pelambre con excretas humanas deshidratadas",
author = "Cruz Villacorta, Lena",
publisher = "Universidad Nacional Agraria La Molina",
year = "2021"
}
The objetive of the research was to evaluate the possibility of composting bovine hair from the pelt process, mixed with deshydrated human excretes from dry mobile container toilets, as an alternative to reduce the pressure on the environment, due to human excretes. Three treatments were installec with the addition of three percent (XRA) and five percent (XRB) of bovine hair against a control treatment without hair (XR). For the follow up, 13 physicochemical parameters were evaluated and CO2 was monitored, organized in 10 sampling dates, in the mesophilic stages the sampling was weekly and in the maturation stage it was monthly, using Austrian methodology Ö-NORM S 2022 (2016), the analyzes were carried out in the laboratory. Fort he microbiological analyzes of both bacteria and parasites, one simple was collected per stage, the first two being analyzed qualitatively and the third quantitatively. The results were compared with international composting standards such as: Chile – NCh 2880 (2004), FAO (2013), Mexico – NMX-AA-180-SCFI-2018; because there is no Peruvian standard, and with other types of compost: vegetable, cattle manure and vermicompost. The product obtained for parameters: physicochemical in accordance with the EPA standard 40 CFR 503, for C:N [14.6:1 (XRA); 17.6:1 (XRB); 15.5:1 (XR)], the pH values [8 (XRA); 7.6 (XRB); 6.8 (XR)], CRA [208.6 (XRA); 158 (XRB); 375 (XR)]%. Final temperature [40.5 (XRA); 36.8 (XRB); 35.7(XR)] °C were within the range of the three proposed standards, and within the range for other types of compost, the parameters with close values were C:N. pH. The monitoring of CO2 gases determined that there was a greater emission of this gas in the thermophilic process, compared to the mesophilic and maturation stage. The microbiological parameters showed a reduction for Escherichia coli [52,000 (XRA); 51, 000 (XRB); 57,500 (XR)] UFC g-1, for total Coliforms [69,000 (XRA); 68,000 (XRB); 79,000 (XR)] CFU g-1 , being above the values established in the three regutations, which is 1000 MPN g-1 and absence for (Samonella Tiphy, Fecal Coliforms), regarding parasites it was evaluated negative for Protozoa such as: Entamoeba coli, Blasticistys hominis, Endolimax nana, likewise for helminth cysts. It is concluded that, if it is posible to compost human excreta and bovine hair, with optimal physicochemical properties, according to international regulations, the decomposition time being greater, four to six month, compared to compost of common organic matter
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