Sorption of cobalt to bone char: Kinetics, competitive sorption and mechanism

By Xiangliang Pan, Jianlong Wang, Daoyong Zhang. 2009

137 citations recorded by the source corpus.

Swine bone char is the combustion residues of swine bone. Cobalt adsorption to swine bone char was studied. Batch kinetics studies showed that a rapid uptake occurred during the first 5 min and was followed with a very slow intraparticle diffusion process. The sorption kinetics was ideally conformed to pseudo-second equation, indicating several mechanisms involved in the adsorption process. Equilibrium sorption isotherm studies showed that the Freundlich isotherm model satisfactorily described the sorption data. The presence of co-ions had appreciable inhibiting effects on cobalt uptake by bone char because copper and zinc had higher affinity for the bone char surface than cobalt. Calcium concentration in solution and XRD analysis showed that ion exchange was involved in the removal of Co from solution over a certain initial cobalt concentration range.

Subfields: Inorganic Chemistry, Materials Chemistry, Water Science and Technology

View Paper: https://www.semanticscholar.org/paper/0dc14f9cde45541fa239746bd8d4083a5b41b44a

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In Materials Chemistry

1. B. Gao
2. Y. Ok
3. Ming Zhang

In Water Science and Technology

1. B. Gao
2. A. Zimmerman
3. Y. Ok
4. Ying Yao
5. Mandu Inyang
6. Xinde Cao
7. P. Pullammanappallil
8. Yingwen Xue

Citations in the corpus

• A review of biochar as a low-cost adsorbent for aqueous heavy metal removal (2016, background): “Free energy, DG (KJ/mol) could also provide information to distinguish physical sorption (DG , ¡20 to 0 KJ/mol) from chemisorption (DG ,¡400 to¡80 KJ/mol) processes (Liu and Zhang, 2009).”