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