Evaluación Del Pre-Tratamiento De La Vinaza A Través De La Ozonización En El Laboratorio De Metano De La Destiladora De Alcoholes Y Rones S. A.

Najarro Sánchez, Sharon Ericka Sabrina (2020) Evaluación Del Pre-Tratamiento De La Vinaza A Través De La Ozonización En El Laboratorio De Metano De La Destiladora De Alcoholes Y Rones S. A. Other thesis, USAC.

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Abstract

Abstract Destiladora de Alcoholes y Rones S.A. obtains as a byproduct of distillation vinasse; which is used for the generation of biogas and the remaining liquid wastes are used as part of the fertigation of the Ingenio Tulula. At present, an amount of 65,000 cubic meters (m3 ) of biogas is produced. The present investigation evaluated the ideal conditions of pre-treatment of raw vinasse, in order to make biogas production more efficient. Its objectives were: to demonstrate at the laboratory level the influence of oxidation times on methane production from pre�treated vinasses under different concentrations of ozone, pH and application time; compare and analyze the results of the pretreatment processes and select the most efficient one; and estimate the economic impact of methane production from pre-treated vinasses with an Advanced Oxidation Process. The pre-treatment evaluated consists in subjecting the raw vinasse to an ozonation process with the objective of oxidizing present by-products that decrease the efficiency of its decomposition. The investigation therefore was based on establishing the ideal conditions in ozone concentration and its application time. The pre-treatment effect was measured through the analysis of Chemical Oxygen Demand (COD), pH, Total Suspended Solids (SST), Biochemical Oxygen Demand (BOD5), total phenols and volatile acids; before and after applying the pre-treatment. Pretreatment was carried out on 14 samples of raw vinasse, under ozone concentrations of 80 mg, 3 g, 4 g and 8g; with a pH of 7.47 and 4.42; in application times of 15 minutes, 30 minutes, 1 hour, 2 hours and 3 hours.

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