Application of Brazilian pine-fruit shell as a biosorbent to removal of reactive red 194 textile dye from aqueous solution: Kinetics and equilibrium study
- 作者：Eder C. Lima ; Betina Royer ; Julio C.P. Vaghetti ; Nathalia M. Simon ; Bruna M. da Cunha ; Flavio A. Pavan ; Edilson V. Benvenutti ; Renato Cataluñ ; a-Veses ; Claudio Airoldi
- 关键词：Biosorption ; Brazilian pine-fruit shell ; Modified biosorbent ; Reactive red 194 ; Isotherms
- 刊名：Journal of Hazardous Materials
- 出版年：2008
- 期刊代码：50_03043894
- 类别：ce
- 出版时间：15 July 2008
- 卷：155
- 期：3
- 页码：536-550
- 文件大小：1464 K
摘要
The Brazilian pine-fruit shell (Araucaria angustifolia) is a food residue, that was used as biosorbent for the removal of non-hydrolyzed reactive red 194 (NRR) and hydrolyzed reactive red 194 (HRR) forms from aqueous solutions. Chemical treatment of Brazilian pine-fruit shell (PW), with chromium (Cr–PW), with acid (A–PW), and with acid followed by chromium (Cr–A–PW) were also tested as alternative biosorbents for the removal of NRR and HRR from aqueous effluents. It was observed that the treatment of the Brazilian pine-fruit shell with chromium (Cr–PW and Cr–A–PW) leaded to a remarkable increase in the specific surface area and average porous volume of these biosorbents when compared to unmodified Brazilian pine-fruit shell (PW).