1. Song, X., Zhang, Y., Yan, C., Jiang, W., and Chang, C., J. Colloid Interface Sci., 2013, vol. 389, no. 1, pp. 213–219.
2. Nhapi, I., Banadda, N., Murenzi, R., Sekomo, C., and Wali, U., Open Environ.
Eng. J., 2011, vol. 4, pp. 170–180.
3. Zhang, J., Fu, H., Lv, X., Tang, J., and Xu, X., Biomass Bioenergy, 2011, vol. 35, no. 1, pp. 464–472.
4. Masoud, M.S., El-Saraf, W.M., Abdel-Halim, A.M., Ali, A.E., Mohamed, E.A., and Hasan, H.M., Arab. J. Chem., 2012, pp. 1–7.
5. Wan Ngah, W. and Hanafiah, M., Bioresour. Technol., 2008, vol. 99, no. 10, pp. 3935–3948.