Rarasaponin-bentonite-activated biochar from durian shells composite for removal of crystal violet and Cr(VI) from aqueous solution
- 136 Downloads
This paper presents the preparation of composite material and its application for the adsorption of crystal violet and Cr(VI) from aqueous solution onto acid-activated bentonite (AAB) and rarasaponin–bentonite-activated biochar from durian shells composite (RBAB). The influence of initial pH of the solution and the temperature of adsorption on the adsorbents adsorption performance was also studied. Langmuir and Freundlich models could represent the adsorption equilibria equally well. Thermodynamic parameters such as ∆G°, ∆H°, and ∆S° were evaluated based on the adsorption isotherms. The values of ∆G°, ∆H°, and ∆S° for crystal violet adsorption system demonstrate behavior contrary to the Cr(VI) adsorption system. Where crystal violet adsorption is preferred at high temperatures with qmax, value is 518.64 mg/L; while adsorption Cr(VI) is better at low temperature with qmax, value is 106.30 mg/L. Pseudo-first-order and pseudo-second-order kinetic models could represent the kinetic data well.
KeywordsRarasaponin Raw durian Biochar Composite Isotherms Kinetics Adsorption
Financial support is from the Ministry of Research and Technology and Higher Education through competency grant 2018.
- Abdel S, Monem A, Ahmed M et al (2012) Adsorption studies on the removal of hexavalent chromium-contaminated wastewater using activated carbon and bentonite. Chem J 2:95–105Google Scholar
- Aljeboree AM (2016) Adsorption of crystal violet dye by Fugas sawdust from aqueous solution. Int J ChemTech Res 9:412–423Google Scholar
- Jian-min R, Si-wei W, Wei J (2010) Adsorption of crystal violet onto BTEA- and CTMA-bentonite from aqueous solutions. World Acad Sci Eng Technol 41:790–795Google Scholar
- Kumar R, Singh R, Kumar N, Bishnoi K, Bishnoi NR (2009) Response surface methodology approach for optimization of biosorption process for removal of Cr (VI), Ni (II) and Zn (II) ions by immobilized bacterial biomass sp. Bacillus brevis. Chem Eng J 146:401–407. https://doi.org/10.1016/j.cej.2008.06.020 CrossRefGoogle Scholar
- Kurniawan A, Sutiono H, Ju YH, Soetaredjo FE, Ayucitra A, Yudha A, Ismadji S (2011b) Utilization of rarasaponin natural surfactant for organo-bentonite preparation: application for methylene blue removal from aqueous effluent. Microporous Mesoporous Mater 142:184–193. https://doi.org/10.1016/j.micromeso.2010.11.032 CrossRefGoogle Scholar
- Saueprasearsit P (2011) Adsorption of chromium (Cr+6) using durian peel. 2011. Int Conf Biotechnol Environ Manag IPCBEE 18:33–38Google Scholar
- Sharma YC (2001) Adsorption of Cr (VI) onto wollastonite: effect of pH. Indian J Chem Technol 8:186–190Google Scholar
- Zhou L, Liu Y, Liu S, Yin Y, Zeng G, Tan X, Hu X, Hu X, Jiang L, Ding Y, Liu S, Huang X (2016) Investigation of the adsorption-reduction mechanisms of hexavalent chromium by ramie biochars of different pyrolytic temperatures. Bioresour Technol 218:351–359. https://doi.org/10.1016/j.biortech.2016.06.102 CrossRefGoogle Scholar