作者机构：
[龚道新; 罗春香] College of Resources & Environment, Hunan Agricultural University, Changsha, 410128, China;Department of Chemistry and Materials Science, Hengyang Normal University, Hengyang, 421008, China;Key Laboratory of Functional Organometallic Materials of Hengyang Normal University, College of Hunan Province, Hengyang, 421008, China;[冯泳兰; 唐文清; 彭刚] Department of Chemistry and Materials Science, Hengyang Normal University, Hengyang, 421008, China, Key Laboratory of Functional Organometallic Materials of Hengyang Normal University, College of Hunan Province, Hengyang, 421008, China;[Zeng R.] College of Resources & Environment, Hunan Agricultural University, Changsha, 410128, China, Department of Chemistry and Materials Science, Hengyang Normal University, Hengyang, 421008, China
通讯机构：
[Gong, D.] C;College of Resources & Environment, Hunan Agricultural University, Changsha, China
作者机构：
[Zeng R.] College of Chemistry and Materials Science, Hengyang Normal University, Hengyang, 421008, China;Key Laboratory of Functional Organometallic Materials of Hengyang Normal University, College of Hunan Province, Hengyang, 421008, China;[戴友芝] College of Chemical Engineering, Xiangtan University, Xiangtan, 411105, China;[冯泳兰; 刘梦琴; 张复兴; 彭刚] College of Chemistry and Materials Science, Hengyang Normal University, Hengyang, 421008, China, Key Laboratory of Functional Organometallic Materials of Hengyang Normal University, College of Hunan Province, Hengyang, 421008, China;[唐文清] College of Chemistry and Materials Science, Hengyang Normal University, Hengyang, 421008, China, Key Laboratory of Functional Organometallic Materials of Hengyang Normal University, College of Hunan Province, Hengyang, 421008, China, College of Chemical Engineering, Xiangtan University, Xiangtan, 411105, China
通讯机构：
[Zeng, R.] C;College of Chemistry and Materials Science, Hengyang Normal University, Hengyang, China
关键词：
烟秸杆;生物炭;吸附;动力学;热力学
摘要：
以农业废弃物烟秸杆为原料,以KH_2PO_4为活化剂,制备了烟秸杆生物碳(简称TSC_(500)),通过静态吸附实验研究了TSC_(500)对含Cr(Ⅵ)废水的吸附性能。采用比表面积分析仪对TSC_(500)进行了测试,实验考察了pH值、吸附剂用量、吸附时间、Cr(Ⅵ)初始浓度和温度对Cr(Ⅵ)吸附的影响,深入研究了TSC_(500)对Cr(Ⅵ)的吸附行为。结果表明,在pH=3、温度313 K条件下,0.2 g TSC_(500)吸附100 mg/L Cr(Ⅵ),去除率和吸附容量分别达到91.32% 和45.66 mg/g,Langmuir和Freundlich比Temkin等温模型更好地拟合吸附实验数据;准一级和准二级动力学模型均能较好地描述该吸附行为,相关系数高达0.99;计算得到热力学参数ΔG~θ、ΔH~θ和ΔS~θ值表明该吸附过程为自发吸热过程。
摘要：
为了解湘江(衡阳段)底泥重金属污染程度,对流域内10个断面18个采样点的表层底泥重金属(Cu、Zn、As、Hg、Cd、Cr、Pb)进行采样,测定样品各金属含量,并分别采用潜在生态危害指数法和地累积指数法评价底泥重金属潜在生态风险和污染程度.结果表明,湘江(衡阳段)表层底泥中各点重金属平均 RI 为1009．46,总体上属于很强生态风险；地累积指数表明在松柏段面的砷、汞、镉、铅处于严重污染.
作者机构：
[张复兴; 唐文清; 冯泳兰] Department of Chemistry and Materials Science, Key Laboratory of Functional Organometallic Materials, Hengyang Normal University, Hengyang, Hunan 421008, China;College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan 410128, China;[Zeng R.-Y.] Department of Chemistry and Materials Science, Key Laboratory of Functional Organometallic Materials, Hengyang Normal University, Hengyang, Hunan 421008, China, College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan 410128, China
通讯机构：
[Zeng, R.-Y.] D;Department of Chemistry and Materials Science, Key Laboratory of Functional Organometallic Materials, Hengyang Normal University, China
作者机构：
[唐文清; 冯泳兰] Department of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, China;[唐文清; 李小明] College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
通讯机构：
College of Environmental Science and Engineering, Hunan University, China
作者机构：
[唐文清; 张复兴] Department of Chemistry and Material Science, Hengyang Normal University, Key Laboratory of Functional Organometallic Materials, Hengyang, Hunan 421008, China;[龚道新] College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan 410128, China;[Zeng R.-Y.] Department of Chemistry and Material Science, Hengyang Normal University, Key Laboratory of Functional Organometallic Materials, Hengyang, Hunan 421008, China, College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan 410128, China
通讯机构：
[Tang, W.-Q.] D;Department of Chemistry and Material Science, Hengyang Normal University, Key Laboratory of Functional Organometallic Materials, China
