Oxidation of phenol in aqueous solution with copper oxide catalysts supported on γ-Al2O3, pillared clay and TiO2: comparison of the performance and costs associated with each catalyst

The Catalytic Wet Air Oxidation (CWAO) of phenol using copper oxide catalysts supported by γ-Al2O3, TiO2, and pillared clay was evaluated to identify which of these catalysts was the most appropriate for this reaction. The CuO/PILC, CuO/γ-Al2O3 and CuO/TiO2 catalysts were the most successful at removing phenol and resulted in more than 96% conversion. Among these catalysts, CuO/γ-Al2O3 produced the largest amount of CO2, the lowest amount of intermediate products and the lowest amount of copper leaching. These results showed that the CuO/γ-Al2O3catalyst was the best for the end of the reaction. However, the methods used in this study did not allow us to identify the most appropriate reaction time (or catalyst). An alternative approach for this problem was to quantify the costs for each reaction time. Using this approach, the CuO/γ-Al2O3 catalyst was the most economically favorable catalyst when it was used during the first hour of the reaction324837848COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPES022805

O empreendedorismo sustentável e a geração de valor no reuso de tecidos do setor têxtil. Estudo de caso do banco de tecido de reuso de São Paulo

O presente artigo propõe-se analisar soluções criativas que estão sendo propostas pelos negócios sustentáveis no âmbito do reuso de tecidos descartados pela indústria têxtil no Brasil. Busca ainda por meio de uma pesquisa qualitativa do Banco de Reuso de Tecidos compreender os benefícios gerados com a reutilização nos aspectos ambientais, sociais econômicos e formas de agregação de valor.The present article aims to analyse creative solutions that are being proposed by sustainable business in the fabrics reuse discarded by the textile industry in Brazil. Search also through a qualitative research Fabrics Reuse Bank understand the benefits generated by the re-use in environmental, economic, social and ways to add value

Carpal Synovitis with Capitate Bone Tuberculosis in a Child

We present a 10-year-old boy with 2-month duration non-traumatic wrist pain and inflammatory signs. Due to elevated inflammatory markers on blood tests, with an increase in radiocarpal and intercarpal joints synovial fluid and no bony lesions, the patient was submitted to wrist arthrocentesis for the suspicion of septic arthritis. The patient did not improve on conventional treatment, however. An MRI showed synovitis around the carpus and a lytic lesion of the capitate bone due to osteomyelitis. A biopsy was able to identify the causative agent as Mycobacterium tuberculosis, and the patient was treated with antibiotics. He improved significantly, with no pain and signs of normal capitate bone remodelling on the last radiograph.info:eu-repo/semantics/publishedVersio