【作者】 张丽丽； 黄玉峰； 方亮； 蔡伟民；

【Author】 Zhang Lili Huang Yufeng Fang Liang Cai WeiminSchool of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai,200240

【机构】 上海交通大学环境科学与工程学院；

【摘要】 好氧颗粒污泥是微生物聚集体,具有良好的沉降性能,多孔的结构,较大的比表面积。在本研究中,好氧颗粒污泥作为一种新型的生物吸附剂,用于模拟工业废水的水溶液中稀土铈离子的去除。序批式实验在不同初始铈离子浓度及颗粒污泥浓度下进行。结果表明,铈离子在颗粒污泥表面的生物吸附与初始铈离子浓度及颗粒污泥浓度密切相关。最大吸附量为352 mg/g(颗粒污泥)。本研究首次表明好氧颗粒污泥对稀土铈离子有较高的吸附量,而且作为高效的生物吸附剂,可以用于来自各种工业废水中的稀土离子去除。更多还原

【Abstract】 Aerobic granules are microbial aggregates possessing excellent settling ability and high-porosity structure. In this study, aerobic granules as a novel type of biosorbent were used for cerium’s removal from aqueous solution simulating the polluted industrial wastewater. Batch trials were conducted at different initial cerium ion and granule concentration. Results showed that the biosorption ability of aerobic granules was related to both initial cerium ion and granule concentration. The maximum biosorption capacity of cerium ion by aerobic granules was 357 mg g-1 granules. The aerobic granules were settled down by gravity from the aqueous solution in 1 min after the biosorption ’experiments. Thus, the post-separation of the conventional suspended biosorbents from the treated effluent could be ignored in the aerobic granule-based biosorption process. All the results confirmed the technical feasibility of the biosorption process by aerobic granules.更多还原