School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, PR China; National Engineering Laboratory for Rice and By-Product Deep Processing, Center South University of Forestry and Technology, Changsha 41004, PR China.
J Hazard Mater. 2013 Dec 15;263 Pt 2:517-24. doi: 10.1016/j.jhazmat.2013.10.004. Epub 2013 Oct 11.
A new crosslinked starch microsphere (CSM) was synthesized in a microwave-assisted inversed emulsion system with soluble starch (ST) as a raw material, MBAA as a crosslinker, and K2S2O8-NaHSO3 as an initiator. The synthesized starch microsphere was characterized and examined by scanning electron microscope (SEM), FTIR spectroscopy and adsorption isotherms of N2 at 77K. Adsorption performance was investigated in methyl violet solution. The results showed that the maximum adsorption capacity for MV was 99.3mg/g at 298 K, and the adsorption fitted pseudo-second-order kinetic model well with correlation coefficients greater than 0.99. The isothermal data obeyed the Langmuir model better compared to Freundlich model and Tempkin model, and the adsorption was exothermic and spontaneous. pH variations (2.0-10.0) did not significantly affect the adsorption of MV onto CSM.
一种新型的交联淀粉微球（CSM）是在微波辅助反相乳液体系中以可溶性淀粉（ST）为原料，MBAA 为交联剂，K2S2O8-NaHSO3 为引发剂合成的。通过扫描电子显微镜（SEM）、傅里叶变换红外光谱（FTIR）和 77K 下氮气的吸附等温线对合成的淀粉微球进行了表征和研究。在甲基紫溶液中考察了吸附性能。结果表明，在 298K 时，CSM 对 MV 的最大吸附容量为 99.3mg/g，吸附过程更符合准二级动力学模型，相关系数均大于 0.99。与 Freundlich 模型和 Tempkin 模型相比，等温数据更符合 Langmuir 模型，吸附是放热和自发的。pH 值变化（2.0-10.0）对 CSM 吸附 MV 没有显著影响。
