El presente trabajo propone la implementación de un plan de manejo de residuos sólidos peligrosos y no peligrosos en la empresa ABRASIVOS S.A. (ASA) para una eficiente gestión de sus insumos y residuos sólidos y por ende el cumplimiento de la normatividad peruana vigente del sector. Se realizaron entrevistas y encuestas al personal a fin de tener un punto de partida del conocimiento y predisposición en la implementación del Plan. Se analizaron los procesos productivos de la empresa así como el diagnóstico técnico operativo del sistema de manejo de residuos sólidos, la identificación de los aspectos y valoración de los impactos ambientales de los procesos de producción a fin de identificar los impactos ambientales significativos y su relación con la generación de residuos sólidos. Esta etapa fue enmarcada en la norma internacional ISO 14001:2004 y una futura implementació...

This research consisted of the evaluation and characterization of wastewater generated during the leather soaking process, both in its conventional method and its enzymatic method. The experiments were conducted at an industrial scale at the Helianthus S.A.C. Company in Lima, using 20 cow hides. Likewise, a treatment process was evaluated for these effluents consisting of protein precipitation and was followed by coagulation. Finally, the dry sludge from each treatment method was evaluated separately for its potential use as fertilizer. The process for the chemical precipitation of proteins consisted of applying KOH until reaching pH values of 10, 11 and 12; while the coagulation process consisted of the application of doses of 600, 800 and 1000 mg/L of aluminum sulphate 17%. When using the conventional soaking process wastewater, the proposed treatment system achieved removal efficienci...

The intensive poultry systems generate organic waste (poultry manure and poultry litter); which, when used fresh, cause negative impacts to the environment, however, these organic residues are rich in nutrients that can be used as soil amendments, being the biochar production an alternative for their use. In this investigation, the biochar production was carried out with a pyrolyzing furnace (5 kg capacity). Measuring in the production stage the parameters: temperature, yields and density of the resulting material. Likewise, the raw material (chicken and poultry litter) and the biochar obtained were characterized, determining: pH, humidity, ash, total organic carbon and contents of the macro and micronutrients. When evaluating the properties of the biochar, statistically significant differences were obtained between the poultry litter and chicken manure in yields, density, pH, humidity, ...

This study aimed to determine the apparent digestibility coefficients and digestible energy of dry velvet bean fodder (Mucuna pruriens). The indirect method was used, considering as a basal diet the concentrate used in the university guinea pig farm (Lima, Peru). The experiment had an adaptation phase (14 days) and a faecal collection phase (5 days). Ten adult male 3-month old guinea pigs randomly distributed in individual metabolic cages were used. Five animals were fed the basal diet and the other five with the experimental diet: 80% basal diet and 20% dry velvet bean fodder. The apparent digestibility coefficients obtained for the dry velvet bean were: 66.29% dry matter, 66.13% organic matter, 74.02% crude protein, 50.82% crude fibre, 60.18% ether extract, 78.22% nitrogen-free extract and 73.33% ash. The estimated digestible energy value was 2.61 kcal/g.

This study aimed to determine the apparent digestibility coefficients and digestible energy of dry velvet bean fodder (Mucuna pruriens). The indirect method was used, considering as a basal diet the concentrate used in the university guinea pig farm (Lima, Peru). The experiment had an adaptation phase (14 days) and a faecal collection phase (5 days). Ten adult male 3-month old guinea pigs randomly distributed in individual metabolic cages were used. Five animals were fed the basal diet and the other five with the experimental diet: 80% basal diet and 20% dry velvet bean fodder. The apparent digestibility coefficients obtained for the dry velvet bean were: 66.29% dry matter, 66.13% organic matter, 74.02% crude protein, 50.82% crude fibre, 60.18% ether extract, 78.22% nitrogen-free extract and 73.33% ash. The estimated digestible energy value was 2.61 kcal/g.