Optimization of process parameters for the removal of chromium(VI) and nickel(II) from aqueous solutions by mixed biosorbents (custard apple seeds andAspergillus niger) using response surface methodology
| Autor: | P. Senthil Kumar, Anbalagan Saravanan, B. Preetha |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
food.ingredient
Aqueous solution Central composite design biology Aspergillus niger Biosorption Environmental engineering chemistry.chemical_element Ocean Engineering 02 engineering and technology Custard-apple 010501 environmental sciences 021001 nanoscience & nanotechnology biology.organism_classification 01 natural sciences Pollution Nickel Chromium food chemistry Response surface methodology 0210 nano-technology 0105 earth and related environmental sciences Water Science and Technology Nuclear chemistry |
| Zdroj: | Desalination and Water Treatment. 57:14530-14543 |
| ISSN: | 1944-3986 1944-3994 |
| DOI: | 10.1080/19443994.2015.1064034 |
| Popis: | The mixture of custard apple seeds and Aspergillus niger was used as biosorbents for the removal of chromium(VI) and nickel(II) from the contaminated water. The batch biosorption process was carried out and it was influenced by the different operating parameters such as initial metal ion concentration, pH, temperature, and biomass loading. The essential process variables were optimized using response surface methodology (RSM) based on the central composite design (CCD) experiments. The ANOVA data obtained from the RSM studies were analyzed using a second-degree polynomial equation and the study of the determination of contour plots showed the interactions among the variables of the biosorption system. The optimum conditions for the removal of chromium(VI) was found to be: initial chromium(VI) concentration = 100 mg/L; pH 3.0; temperature = 36°C, and biosorbent loading = 10 g/L. At these optimized conditions, the maximum removal of chromium(VI) was found to be of 95.7%. The optimum conditions for t... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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