A two step optimization approach for maximizing biosorption of hexavalent chromium ions (Cr (VI)) using alginate immobilized Sargassum sp in a packed bed column

被引：13
|
作者：
Prabhu, Ashish A. [1 ]
Chityala, Sushma [1 ]
Jayachandran, Dharanidaran [1 ]
Deshavath, Narendra Naik [2 ]
Veeranki, Venkata Dasu [1 ,2 ]
机构：
[1] Indian Inst Technol Guwahati, Dept Biosci & Bioengn, Biochem Engn Lab, Gauhati 781039, Assam, India
[2] Indian Inst Technol Guwahati, Ctr Environm, Gauhati, Assam, India
来源：
SEPARATION SCIENCE AND TECHNOLOGY | 2021年 / 56卷 / 01期
关键词：
Sargassum sp; Hexavalent chromium (Cr (VI)); Packed bed column; Statistical optimization; kinetic modeling; WASTE-WATER; ADSORPTIVE REMOVAL; MODIFIED BIOMASS; AQUEOUS-SOLUTION; CR(VI); PHENOL; FLOW;
D O I：
10.1080/01496395.2019.1708933
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In the present study, we have demonstrated the application of two-step optimization strategy for hexavalent chromium (Cr (VI)) adsorption using Sargassum sp in a packed bed column. ANOVA showed that initial metal concentration has larger impact on sorption efficiency. Application of ANN-GA optimization showed promising results among the models tested. The biosorption efficiency accelerated to 90.79% with Cr (VI) conc = 25 mg L-1, Bed height = 11.97 cm and Flow rate = 5.29 mL min(-1). The adsorption mechanism was described using kinetic models where Bed depth service time and Yoon-Nelson model showed a better fit for the experimental data with the correlation coefficient of 0.9.
引用
收藏
页码：90 / 106
页数：17
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