Use of rice hull as a biomass sorbent for organic pollutant removal: adsorption isotherms and thermodynamic
Document title: Use of rice hull as a biomass sorbent for organic pollutant removal: adsorption isotherms and thermodynamic
Journal: Latin American applied research
Database: PERIÓDICA
System number: 000372248
ISSN: 0327-0793
Authors: 1
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1
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1
Institutions: 1Universidade Federal de Santa Maria, Departamento de Engenharia Quimica, Santa Maria, Rio Grande do Sul. Brasil
Year:
Volumen: 43
Number: 1
Pages: 1-6
Country: Argentina
Language: Inglés
Document type: Artículo
Approach: Experimental, aplicado
English abstract The present study describes the adsorption of textile dye on rice hull. The adsorption parameters were obtained from Langmuir and Freundlich isotherms utilizing linear regression plots to fit the data. The results showed that Langmuir equation was more suitable than the Freundlich one to predict the experimental adsorption isotherms, indicating that the adsorption of dye molecules is localized in a monolayer on the surface of the adsorbent. Thermodynamic parameters such as 􀀧Ha, 􀀧Sa and 􀀧Ga were determined in this work. The heat evolved during adsorption is endothermic. The maximum sorption capacity of rice husk was satisfactory when compared to capacities of other low-cost adsorbent materials
Disciplines: Agrociencias,
Ingeniería
Keyword: Ingeniería ambiental,
Contaminantes orgánicos,
Remoción de contaminantes,
Cáscara de arroz,
Isotermas de adsorción,
Termodinámica
Keyword: Agricultural sciences,
Engineering,
Environmental engineering,
Organic pollutants,
Pollutants removal,
Rice husk,
Adsorption isotherms,
Thermodynamics
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