naa a22 4500 510821294 CHVBK 20180411083533.0 cr unu---uuuuu 180411e20130201xx s 000 0 eng 10.1007/s11814-012-0127-8 doi (NATIONALLICENCE)springer-10.1007/s11814-012-0127-8 Batch and continuous (fixed-bed column) biosorption of Cu(II) by Tamarindus indica fruit shell [Elektronische Daten] [Shamik Chowdhury, Papita Saha] The feasibility of employing Tamarindus indica (tamarind) fruit shell (TFS) as low-cost biosorbent for removal of Cu(II) from aqueous solutions was investigated. Batch experiments were carried out as function of initial solution pH (2-7), contact time (10-240 min), initial Cu(II) concentration (20-100 mg L−1), biosorbent dose (0.5-5 g) and temperature (293-313 K). Biosorption equilibrium data were well described by the Langmuir isotherm model with maximum biosorption capacity of 80.01 mg g−1 at 313 K. Biosorption of Cu(II) followed pseudo-second-order kinetics. Gibbs free energy (ΔG0) was spontaneous for all interactions, and the biosorption process exhibited endothermic enthalpy values. To ascertain the practical applicability of the biosorbent, fixed-bed column studies were also performed. The breakthrough time increased with increasing bed height and decreased with increasing flow rate. The Thomas model as well as the Bed Depth Service Time (BDST) model was fitted to the dynamic flow experimental data to determine the column kinetic parameters useful for designing large-scale column studies. The Thomas model showed good agreement with the experimental results at all the process parameters studied. It could be concluded that TFS may be used as an inexpensive and effective biosorbent without any treatment or any other modification for the removal of Cu(II) ions from aqueous solutions. Korean Institute of Chemical Engineers, Seoul, Korea, 2012 Biosorption nationallicence Cu(II) nationallicence Tamarindus indica Fruit Shell nationallicence Batch nationallicence Fixed-bed Column nationallicence Chowdhury Shamik Department of Biotechnology, National Institute of Technology-Durgapur, Mahatma Gandhi Avenue, 713209, Durgapur, West Bengal, India aut Saha Papita Department of Biotechnology, National Institute of Technology-Durgapur, Mahatma Gandhi Avenue, 713209, Durgapur, West Bengal, India aut Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/2(2013-02-01), 369-378 0256-1115 30:2<369 2013 30 11814 https://doi.org/10.1007/s11814-012-0127-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-012-0127-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chowdhury Shamik Department of Biotechnology, National Institute of Technology-Durgapur, Mahatma Gandhi Avenue, 713209, Durgapur, West Bengal, India aut NATIONALLICENCE 700 1- Saha Papita Department of Biotechnology, National Institute of Technology-Durgapur, Mahatma Gandhi Avenue, 713209, Durgapur, West Bengal, India aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/2(2013-02-01), 369-378 0256-1115 30:2<369 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer