Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, The Institute of Biodiversity Science, School of Life Science, Fudan University, 2005 Songhu Road, Shanghai 200433, China.
Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, The Institute of Biodiversity Science, School of Life Science, Fudan University, 2005 Songhu Road, Shanghai 200433, China.
Bioresour Technol. 2016 Nov;219:330-337. doi: 10.1016/j.biortech.2016.07.121. Epub 2016 Aug 1.
Efforts were made in this study to using an extraction residue of Salvia mitiorrziza Bge (SM), a widely utilized traditional Chinese medicine, as an effective biosorbent of methylene blue from polluted water. Batch experiments were carried out with original and chemical modification, particle size, dosage, solution pH, contact time, and initial concentration of the dye. Experimental data fit Langmuir isotherm and pseudo-second order kinetic best compared to other models applied in the study. Characterization of adsorption was determined by FT-IR, SEM and particle surface area measurement. The maximum monolayer biosorption capacity of raw SM is 100.0mg·g(-1). The citric acid and Na2CO3 modification can significantly enhance this value up to 161.29 and 178.57mg·g(-1), respectively. This investigation provides a novel approach for reutilizing the enormous quantity of Chinese herbal medicine wastes, which is significant since these dregs have brought out big environmental and heathy problems in the present China.
本研究旨在利用广泛应用的中药丹参（SM）的提取残渣作为一种从污染水中有效吸附亚甲基蓝的生物吸附剂。采用原始和化学改性、粒径、剂量、溶液 pH 值、接触时间和染料初始浓度进行了批量实验。与应用于该研究的其他模型相比，实验数据最符合朗缪尔等温线和拟二级动力学模型。吸附特性通过 FT-IR、SEM 和颗粒表面积测量来确定。原始 SM 的最大单层生物吸附容量为 100.0mg·g(-1)。柠檬酸和 Na2CO3 改性可分别显著提高到 161.29 和 178.57mg·g(-1)。这项研究为再利用大量的中草药废料提供了一种新方法，因为这些药渣在中国目前带来了很大的环境和健康问题。
