Vermicompost for Indigo Blue and Congo Red Removal  

作　　者：Joselito Nardy Ribeiro Araceli Veronica F. N. Ribeiro Andre Romero da Silva Madson de Godoi Pereira Jairo Pinto de Oliveira Alveriana Tagarro Tomaz Barbara Vitoria Joselito Nardy Ribeiro;Araceli Veronica F. N. Ribeiro;Andre Romero da Silva;Madson de Godoi Pereira;Jairo Pinto de Oliveira;Alveriana Tagarro Tomaz;Barbara Vitoria(Health Science Center, Federal University of Espirito Santo, Vitoria-ES, Brazil;Federal Institute of Espirito Santo, Vila Velha-ES, Brazil;Federal Institute of Espirito Santo, Aracruz-ES, Brazil;Department of Exact and Earth Sciences, University of Bahia State, Salvador-BA, Brazil)

机构地区：[1]Health Science Center, Federal University of Espirito Santo, Vitoria-ES, Brazil [2]Federal Institute of Espirito Santo, Vila Velha-ES, Brazil [3]Federal Institute of Espirito Santo, Aracruz-ES, Brazil [4]Department of Exact and Earth Sciences, University of Bahia State, Salvador-BA, Brazil

出　　处：《Journal of Water Resource and Protection》2021年第6期419-434,共16页水资源与保护（英文）

摘　　要：The data obtained through this work revealed that the vermicompost is a natural adsorbent able to removal two textile dyes from an aqueous medium. The values of maximum adsorption capacity for congo red (23.25 mg/g) and indigo blue (40.39 mg/g) obtained from the Mathematical Langmuir Model reveal it. The conditions of adsorbent mass, stirring time between adsorbent and dyes were optimized. Additionally, the values of Gibbs free energy demonstrate the predominance of physical interaction between both dyes and vermicompost. Through Langmuir constant values, it was possible to identify similar affinities between both dyes and vermicompost. The value of dimensionless constant indicates favorable adsorptions process. Finally, through physicochemical analysis from scanning electron microscopy and Fourier Transform Infra-Red Spectroscopy, the characteristics of vermicompost were verified revealing essential aspects to efficient adsorbent.The data obtained through this work revealed that the vermicompost is a natural adsorbent able to removal two textile dyes from an aqueous medium. The values of maximum adsorption capacity for congo red (23.25 mg/g) and indigo blue (40.39 mg/g) obtained from the Mathematical Langmuir Model reveal it. The conditions of adsorbent mass, stirring time between adsorbent and dyes were optimized. Additionally, the values of Gibbs free energy demonstrate the predominance of physical interaction between both dyes and vermicompost. Through Langmuir constant values, it was possible to identify similar affinities between both dyes and vermicompost. The value of dimensionless constant indicates favorable adsorptions process. Finally, through physicochemical analysis from scanning electron microscopy and Fourier Transform Infra-Red Spectroscopy, the characteristics of vermicompost were verified revealing essential aspects to efficient adsorbent.

关 键 词：VERMICOMPOST ADSORPTION Congo Red Indigo Blue 

分 类 号：O64[理学—物理化学]