Concurrent removal of cadmium and benzene from aqueous solution by powdered activated carbon impregnated alginate beads
| Autor: | Woosik Jung, Rajesh Kumar, Sunjoon Kim, Byong-Hun Jeon, Thomas C. Timmes, Abinashi Sigdel, Booki Min, Chan-Ung Kang, Minsun Lee, Ui-Kyu Choi |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Cadmium
Powdered activated carbon treatment Aqueous solution Aqueous two-phase system Langmuir adsorption model chemistry.chemical_element Sorption 02 engineering and technology 010501 environmental sciences 021001 nanoscience & nanotechnology 01 natural sciences symbols.namesake chemistry.chemical_compound Adsorption chemistry symbols 0210 nano-technology Benzene 0105 earth and related environmental sciences Earth-Surface Processes Nuclear chemistry |
| Zdroj: | CATENA. 148:101-107 |
| ISSN: | 0341-8162 |
| Popis: | Applicability of a powdered activated carbon impregnated alginate beads (ABPAC) was examined toward simultaneous removal of heavy metal (cadmium) and volatile organic compound (benzene) from water. Sorption of cadmium and benzene by ABPAC was investigated in both single and binary systems as a function of contact time (1 h–11 d), initial pH (4–7), and initial concentration of cadmium and benzene (10–600 mg L–1). The sorption capacity of APBAC for cadmium and benzene was 149.32 and 89.60 mg g–1, respectively. Sorption kinetics was well described by the pseudo-second-order model with correlation coefficients, R2 > 0.994. Cadmium sorption capacity increased from 41.76 to 56.09 mg g–1 with increasing pH from 4 to 7, while benzene sorption was not much influenced. The Langmuir model best correlated with adsorption of cadmium and benzene on ABPAC. Our results indicated no competition effects in a binary-contaminant system, which proves the practical utility of ABPAC for the concurrent sorptive removal of aqueous phase heavy metals and volatile organic compounds. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect