Removal and Recovery of Silver by Dynamic Adsorption on Bentonite Clay Using a Fixed-Bed Column System

被引：20

作者：

Cantuaria, M. L. ^{[1
]}

Nascimento, E. S. ^{[1
]}

Almeida Neto, A. F. ^{[1
]}

dos Santos, O. A. A. ^{[2
]}

Vieira, M. G. A. ^{[1
]}

机构：

[1] Univ Estadual Campinas, UNICAMP, Dept Proc & Prod Design, Sch Chem Engn, BR-13083852 Campinas, SP, Brazil

[2] Univ Maringa, UEM, Dept Chem Engn, BR-87020900 Maringa, Parana, Brazil

来源：

ADSORPTION SCIENCE & TECHNOLOGY | 2015年 / 33卷 / 02期

基金：

巴西圣保罗研究基金会;

关键词：

IONS; BIOSORPTION;

D O I：

10.1260/0263-6174.33.2.91

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Several studies have focused on the removal and recovery of precious metal ions from industrial wastewater due to their environmental and economic importance. Adsorption on bentonite clays has been shown to possess a high removal potential for several metal ions. We herein investigated the dynamic adsorption of silver using a fixed-bed column and a calcined bentonite clay called Verde-lodo as an adsorbent. A fluid dynamic study was performed to evaluate the adsorption system's metal-ion removal capacity (q(u) and q(t)), the mass transfer zone and the percentage of total removal according to different effluent's flow. Adsorption-desorption cycles were carried out using nitric acid as an eluent to evaluate the useful lifetime of the column. The breakthrough curves were fitted to the Bohart-Adams model (quasichemical). Moreover, the zeta potential was analyzed to explain the difference between the removal capacity obtained for the static and dynamic systems.

引用

页码：91 / 103

页数：13

共 23 条

[1] Biosorption of Silver by Macrophyte Salvinia Cucullata [J].

Almeida Neto, Manuella L. Cantuaria Ambrosio F. ;

Vieira, Melissa G. A. .

IBIC2014: 4TH INTERNATIONAL CONFERENCE ON INDUSTRIAL BIOTECHNOLOGY, 2014, 38 :109-114

[2] Heavy metal interactions with phosphatic clay: Kinetic and equilibrium studies [J].

Anirudhan, T. S. ;

Bringle, C. D. ;

Radhakrishnan, P. G. .

CHEMICAL ENGINEERING JOURNAL, 2012, 200 :149-157

[3] A review of potentially low-cost sorbents for heavy metals [J].

Bailey, SE ;

Olin, TJ ;

Bricka, RM ;

Adrian, DD .

WATER RESEARCH, 1999, 33 (11) :2469-2479

[4]

Brindley G.W., 1980, CRYST STRUCT COMMUN, V5

[5] Removal of Silver Ions on Calcined Verde-lodo Bentonite Clay: Equilibrium Study [J].

Cantuaria, Manuella L. ;

de Almeida Neto, Ambrosio F. ;

Nascimento, Eric S. ;

dos Santos, Onelia A. A. ;

Vieira, Melissa G. A. .

PRES 2014, 17TH CONFERENCE ON PROCESS INTEGRATION, MODELLING AND OPTIMISATION FOR ENERGY SAVING AND POLLUTION REDUCTION, PTS 1-3, 2014, 39 :667-+

[6] Metal desorption from copper(II)/nickel(II)-spiked kaolin as a soil component using plant-derived saponin biosurfactant [J].

Chen, Wen-Jang ;

Hsia, Lai-Chun ;

Chen, Karen Kai-Yun .

PROCESS BIOCHEMISTRY, 2008, 43 (05) :488-498

[7] A comparison of the properties of natural clinoptilolites and their ion-exchange capacities for silver removal [J].

Coruh, Semra ;

Senel, Gaye ;

Ergun, Osman Nuri .

JOURNAL OF HAZARDOUS MATERIALS, 2010, 180 (1-3) :486-492

[8] Cu(II) Adsorption on Modified Bentonitic Clays: Different Isotherm Behaviors in Static and Dynamic Systems [J].

de Almeida Neto, Ambrosio Florencio ;

Adeodato Vieira, Melissa Gurgel ;

Carlos da Silva, Meuris Gurgel .

MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS, 2012, 15 (01) :114-124

[9] Removal of heavy metal ions from wastewaters: A review [J].

Fu, Fenglian ;

Wang, Qi .

JOURNAL OF ENVIRONMENTAL MANAGEMENT, 2011, 92 (03) :407-418

[10] Silver products for medical indications: Risk-benefit assessment [J].

Fung, MC ;

Bowen, DL .

JOURNAL OF TOXICOLOGY-CLINICAL TOXICOLOGY, 1996, 34 (01) :119-126

← 1 2 3 →