The purpose of this work was to evaluate the technical and economical feasibility of converting three in-series chemical scrubbers to biotrickling filters for the simultaneous removal at neutral pH of 10000 m 3 /h containing H 2 S and volatile organic compounds (VOCs) at a wastewater treatment plant (WWTP). The conversion was based on previous conversion protocols and mainly required of replacing the original packing material by a structured packing and recycle pumps, besides modifying the controls and operation of the reactors. Complete removal of H 2 S and VOCs on a routine basis was reached in a longer period of time compared to previous conversions reported. Under the conditions at the WWTP, i.e., a gas contact time of about 1.4 seconds per reactor and pH controlled between 6.5 and 6.8, inlet average concentrations below 10 ppm v of H 2 S and below 5 ppm v for VOCs were often completely degraded in the reactors. The first and second reactors played a major role in H 2 S removal. Long-term operation of the biotrickling filters proved the ability of the biotrickling filter to handle progressive load variations of H 2 S and VOCs. However, fast, sudden load changes often lead to reduced removal efficciencies. Odor removal showed average efficiencies above 80%. Limited outlet odor concentration was attributed to limited removal of VOCs, which was assessed through gas chromatographymass spectrometry of selected gas samples. The conversion showed as economically viable taking into account the theoretical consumption of chemicals needed for the absorption and oxidation of both H 2 S and VOCs.
Objetivo: Analisar a presença de disciplinas sobre morte, perda e luto na matriz curricular dos cursos de medicina e enfermagem, públicos e privados do Brasil. Metodologia: Trata-se de um estudo de abordagem mista, quantitativa e qualitativa, de caráter exploratório, com uso de bases de dados secundárias, que propôs investigar a matriz curricular dos cursos de medicina e enfermagem do Brasil, em busca de componentes curriculares ou conteúdos que abordem temas relacionados à morte, perda e luto. Resultados: A amostra contém 103 instituições, apenas 44% disponibilizam descrição da grade curricular. 83% dos cursos de medicina públicos abordam os temas morte, perda e luto em matérias obrigatórias. De todos os cursos com informações públicas, apenas 28% apresentaram algo relacionado à educação para morte, perda e luto. Os cursos analisados que abordam a temática são majoritariamente públicos. Todavia, nenhum dos cursos que abordam o tema objeto de estudo este se apresenta como tema central de uma matéria, as informações sobre morte, perda e luto sempre estavam implícitas na descrição da ementa curricular. Conclusões: É evidente a necessidade de se inserir disciplinas com foco central na morte, perda e luto, com carga horária capaz de abarcar a profundidade do assunto, não apenas ser inserido de forma secundária.
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