Examinando por Materia "biofertilizer"

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Ichu valorization by Pleurotus spp. cultivation and potential of the residual substrate as a biofertilizer
(MDPI, 2025-03-18) Solórzano Acosta, Richard Andi; Dionisio, Luis; Burga, Lyana; Javier Astete, Rosario Elyzabeth; Quispe Apaza, Cinthia Sheila; Oscco, Persing; Johnson, Luis
The high Andean grass Jarava ichu (Poaceae) plays a vital role in water regulation and aquifer recharge. However, its limited use is often linked to forest fires, highlighting the need for sustainable alternatives. Therefore, this study aims to explore the valorization of ichu as a substratefor the cultivation of Pleurotus spp. (P. citrinopileatus, P. djamor and P. ostreatus) and to evaluate the potential of the residual substrate as a biofertilizer, offering an ecological alternative to grassland burning in the Peruvian Andes. Samples of ichu from the district of Tomás (Lima, Peru) were used as culture substrate, analyzing productivity indicators such as crop cycle (CC), biological efficiency (EB) and production rate (PR), together with the nutritional profile of the fungi and the chemical properties of the residual substrate. The results showed an average biological efficiency of 19.8%, with no significant differences (p>0.05) in CC, EB or PR among the species, confirming the viability of ichu as a substrate. The fungi presented a high protein content (24.1-30.41% on a dry basis), highlighting its nutritional value. In addition, the residual substrate exhibited elevated levels of phosphorus (795.9-1296.9 ppm) and potassium (253.1-291.3 ppm) compared to raw ichu (0.11-7.77 ppm for both nutrients). Germination tests on radish seeds showed rates between 80% and 100%, without inhibition, supporting its potential as a biofertilizer. This study demonstrates the doublé potential of ichu as a substrate for the sustainable production of edible mushrooms of high nutritional value and as a source of biofertilizers
Proposal for Bioenergy Territorial Planning in LATAM; Part 1/2: Circular Economy Model, Urban Component Using Household Biomass
(Presentación en el congreso: Creando soluciones para un futuro sostenible: emprendimiento basado en tecnología” - del 2 al 4 de diciembre de 2024, 2024-12-04) Gómez Montoya, Juan Pablo; Ortiz Dongo, Luis Felipe; Silva, Fernando; Peñalva , Jhon Jhonathan; Arrieta Gonzales, Carlos; Luna DelRisco, Mario
The research is divided into two articles, presenting a bioenergy territorial planning proposal for LATAM. The first part focuses on an urban circular economy (CE) model using household organic municipal waste based on source separation. The second part is related to a proposal for designing internal combustion engines for renewable and alternative gaseous fuels. This paper quantifies the bioenergy potential that could be generated for LATAM by using national population censuses-based on scientific formulation and AI-powered databases to estimate the amount of biofertilizers, biogas, and green hydrogen that can be obtained according to the proposed CE model. The sustainability of the CE model is analyzed through a thermo-economic assessment, social impact, and environmental impact, with carbon footprint measurement using a standardized calculator. Additional considerations, risk analysis, and challenges for the model's implementation are also presented to promote its widespread adoption.