Crude oil removal from aqueous solution using raw and carbonized Xanthoceras sorbifolia shells
- 98 Downloads
Fruit shell residue from Xanthoceras sorbifolia was investigated as a potential biosorbent to remove crude oil from aqueous solution. The shell powder and its carbonized material were compared while assessing various factors that influenced oil removal capacity. The structure and sorption mechanism were characterized using scanning electron microscopy and Fourier-transform infrared spectroscopy. The oil removal capacity of the raw material (75.1 mg g−1) was better than the carbonized material (49.5 mg g−1). The oil removal capacity increased with greater saponin content, indicating that hydrophobic and lipophilic surface characteristics of the saponins improved adsorption by the raw X. sorbifolia shell. An orthogonal experimental design was used to optimize the adsorption. Using 4 g L−1 of raw X. sorbifolia shell (particle size of < 0.15 mm), the highest crude oil removal efficiency was obtained using an initial oil concentration of 400 mg L−1, adsorption temperature of 30 °C, adsorption time of 10 min at a shaking speed of 150 rpm. The adsorption of crude oil onto X. sorbifolia shell was best described using a pseudo-second-order kinetic model. Raw X. sorbifolia shell material was more efficient than the carbonized material at crude oil removal from aqueous solution. This was attributable to the functional groups of saponins in raw X. sorbifolia shell. This study highlights that some agricultural and forest residues could be a promising source of low-cost biosorbents for oil contaminants from water—without requiring additional processing such as carbonization.
KeywordsAdsorption kinetics Biosorbents Oily wastewater Physical-chemistry adsorption Saponin
The authors are grateful for the financial support provided by the National “Twelfth Five-Year” Plan for Science & Technology Support (2012BAD32B08) of China and the Natural Science Foundation of Guangdong Province, China (2017A030311019).
- Deschamps G, Caruel H, Borredon ME, Bonnin C, Vignoles C (2003) Oil removal from water by selective sorption on hydrophobic cotton fibers. 1. Study of sorption properties and comparison with other cotton fiber-based sorbents. Environ Sci Technol 37:1013–1015. https://doi.org/10.1021/es020061s CrossRefGoogle Scholar
- Li J, Zu YG, Fu YJ, Yang YC, Li SM, Li ZN, Wink M (2010) Optimization of microwave-assisted extraction of triterpene saponins from defatted residue of yellow horn (Xanthoceras sorbifolia Bunge.) kernel and evaluation of its antioxidant activity. Innovative Food Sci Emerg Technol 11:637–643. https://doi.org/10.1016/j.ifset.2010.06.004 CrossRefGoogle Scholar
- Mutairi MSA (2016) Development and evaluation of a remediation strategy for the oil lakes of Kuwait. School of civil engineering and surveying. Doctoral Thesis University of Portsmouth. United KingdomGoogle Scholar
- Weber WJ, Morris JC (1963) Kinetics of adsorption on carbon from solution. J Sanit Eng Div Am Soc Civil Eng 89:31–59Google Scholar
- Wu W, Li J, Lan T, Müller K, Niazi NK, Chen X, Xu S, Zheng L, Chu Y, Li J, Yuan G, Wang H (2017) Unraveling sorption of lead in aqueous solutions by chemically modified biochar derived from coconut fiber: a microscopic and spectroscopic investigation. Sci Total Environ 576:766–774. https://doi.org/10.1016/j.scitotenv.2016.10.163 CrossRefGoogle Scholar
- Wuana RA, Nnamonu LA, Idoko JO (2015) Sorptive removal of phenol from aqueous solution by ammonium chloride-treated and carbonized moringa oleifera seed shells. Int J Sci Res 4:594–602Google Scholar