Otimização da adsorção do Erionyl Yellow A-R em carvão ativado do bagaço da cana-de-açúcar por meio de planejamento experimental
Synthetic dyes are widely applicable in various industry segments. In the textile industry, due to inefficiencies in dyeing processes, 200,000 tons per year of these products mix with the industrial effluent, part of which is discharged into the environment without previous...
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| Những tác giả chính: | , , , , , |
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| Định dạng: | article |
| Ngôn ngữ: | pt_BR |
| Được phát hành: |
Brazilian Journals Publicações de Periódicos e Editora Ltda
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| Những chủ đề: | |
| Truy cập trực tuyến: | https://repositorio.ufrn.br/handle/123456789/32334 |
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| Tóm tắt: | Synthetic dyes are widely applicable in various industry segments. In the textile industry, due to inefficiencies in dyeing processes, 200,000 tons per year of these products mix with the industrial effluent, part of which is discharged into the environment without previous treatment. When released into water bodies, even in small concentrations, the dyes can affect the photosynthesis process of living beings, due to decreased solar penetration, causingan imbalance in the ecosystem. In this sense, a treatment method capable of removing these compounds is required. In the case of soluble dyes, the processes involving adsorption are effective in their removal. Thus, this work aims to produce and characterize activated charcoal obtained through sugarcane,determine its efficiency in the process of adsorption of Eryonil Yellow A-R, and utilize statistical techniques intended to evaluate and optimize different parameters of the process of adsorption of this dye in activated charcoal. The results of characterization of the adsorbent has indicated a large presence of micropores, resulting in a specific area greater than 1200 m2g-1. The adsorption experiments were conducted while varying the pH and temperature ofthe medium. From the statistical data analysis, it was possible to confirm that these variables presented significant effects, within confidence interval of 95%. Furthermore, the experiment at 30°C and pH 2 presented the greater amount of dye adsorbed by activated charcoal (q), reaching a value of 61,1 mg/g |
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