Pré-tratamento da fração orgânica presente nos resíduos sólidos urbanos no brasil para produção de biocombustível

Abstract

The recovery and energy use of waste is one of the main ways to minimize the environmental effects caused by poor waste management. One of the main ways to carry out this energy recovery and generate waste would be anaerobic combustion (AD). In this process, it is possible to treat organic fraction municipal solid waste (OFMSW), which at the same time can be considered as one of the potent sources of renewable energy due to the generation of biofuel during the process. Therefore, for a greater yield of biofuels and digestibility of these substrates, pre-treatment techniques are used, helping to break down complex carbohydrates into simple sugars, thus making them consumables for the bacteria present in the environment. After analyzing the keywords that were most used when it came to sustainability, greenhouse gases, the words “anaerobic digestion”, “food waste”, “organic waste”, “organic fraction of urban solid waste” were used in the first stage of the research. With these words, 992 articles were found, in the period 1990-2023, using the Web

of Science database, to then perform a bibliometric analysis, reporting on the existing pre- treatments and already used for the production of biofuel from OFMSW or food waste, its sequence

and main effects on digestion. The years 2021 and 2022 were the ones with the most articles published, with China being the country that published the most, with about 37% of the articles. Asian authors were the ones who published the most and were cited over these years, with emphasis on Li Y and Li X. Of the most relevant articles, the objective of optimizing anaerobic digestion is the one that appears the most, with pretreatment being one of the themes used. to obtain this optimization. Chemical pre-treatment was the one with the most publications, with a total of 36 articles, which is currently the most used. For chemical engineering, the research helped to demonstrate some bottlenecks that are still present related to substrate pretreatment, as well as obtaining maximum DA efficiency, it also helps in parameters that can be used in some types of pretreatments.