全文总字数：3061字
1. 毕业设计（论文）的内容和要求
铬有二价、三价和六价三种化合物。
二价铬（Cr(II)）不稳定，易氧化。
三价铬（Cr(III)）最稳定，其中Cr2O3不溶于水。
2. 实验内容和要求
1、石英砂的准备及表征等2、示踪试验3、运移实验要求：通过实验掌握运移柱的建立方法，示踪实验方法，运移实验方法等，同时要求熟悉和掌握相应仪器的使用法。
3. 参考文献
1.He X, Chen G, Fang Z, Liang W, Li B, Tang J, Sun Y, Qin L. Source identification of chromium in the sediments of the Xiaoqing River and Laizhou Bay: A chromium stable isotope perspective, Environmental Pollution, 2020, 264: 114686.2.Xu T, Nan F, Jiang X, Tang Y, Zeng Y, Zhang W, Shi B. Effect of soil pH on the transport, fractionation, and oxidation of chromium (III), Ecotoxicology and Environmental Safety 2020, 195: 110459.3.Li B, Liao P, Xie L, Li Q, Pan C, Ning Z, Liu C. Reduced NOM triggered rapid Cr(VI) reduction and formation of NOM-Cr(III) colloids in anoxic environments. Water Research 2020, 181: 115923.4.Wang X, Li L, Yan X, Meng X, Chen Y. Processes of chromium (VI) migration and transformation in chromate production site: A case study from the middle of China Chemosphere, 2020, 257: 127282.5.Qiu Y, Zhang Q, Gao B, Li M, Fan Z, Sang W, Hao H, Wei X. Removal mechanisms of Cr(VI) and Cr(III) by biochar supported nanosized zero-valent iron: Synergy of adsorption, reduction and transformation, Environmental Pollution, 2020, 265, 115018.6.Ghiasia B, Niksokhana M H, Ali Mahdavi Mazdehb Co-transport of chromium(VI) and bentonite colloidal particles in watersaturated porous media: Effect of colloid concentration, sand gradation, and flow velocity, Journal of Contaminant Hydrology, 2020, 234: 103682.7.Sorwat J, Mellage A, Kappler A, Byrne JM, Immobilizing magnetite onto quartz sand for chromium remediation, Journal of Hazardous Materials 2020, 400: 123139.8.Jin R, Liu Y, Liu G, Liu L, Zhou J, Influence of chromate adsorption and reduction on transport and retention of biochar colloids in saturated porous media, Colloids and surfaces A- Physicochenmical and Engineering Aspects, 2020,597: 124791.9.Li J, Fana M, Li M, Liu X. Cr(VI) removal from groundwater using double surfactant-modified nanoscale zero-valent iron (nZVI): Effects of materials in different status, Science of the Total Environment, 2020, 717: 137112.10.Liao P, Pan C, Ding W, Li W, Yuan S, Fortner J, Giammar D, Formation and Transport of Cr(III)-NOM-Fe Colloids upon Reaction of Cr(VI) with NOM-Fe(II) Colloids at Anoxic-Oxic Interfaces, Environmental Science Technology, 2020, 54 : 4256-4266
4. 毕业设计（论文）计划
2019.12.28-2020.2.28 布置课题，根据课题要求开始查阅文献，撰写并提交开题报告，完成文献翻译。
2020.2.29-2020.3.14 整理实验室，熟悉实验室各项操作及规定2020.3.15-2020.3.31 实验材料，试剂等的准备2020.4.1-2020.4.7 示踪实验2020.4.8-2020.5.25 柱运移实验2020.5.26-2020.6.3 整理数据, 补充实验，撰写论文2015.6.3- 完成并修改论文准备答辩
以上是毕业论文任务书，课题毕业论文、开题报告、外文翻译、程序设计、图纸设计等资料可联系客服协助查找。
