Batch Experiments to Remove Chlorohydrocarbons from Wastewaters Using Surfactant-Modified Geomaterials
-
摘要: 利用天然沸石、膨润土、碱性流纹岩及英安岩等岩矿材料及其表面活性剂HDTMA-Br改性产物对废水中有机氯化物的去除进行了实验研究.结果表明, 表面活性剂改性作用有利于增强岩矿材料对水中有机氯化物的去除作用, 其中, 改性膨润土去除效果最好, 二氯甲烷、三氯甲烷、四氯化碳、三氯乙烯、四氯乙烯和氯苯的去除量分别达到9.1, 18.9, 43.0, 20.0, 32.4和30.3μg·g-1.有机物在沉积物中的有机碳-水分配系数Koc与岩矿材料对有机氯化物的去除量之间有较好的相关关系.Abstract: Natural and surfactant-modified geomaterials(such as zeolite, bentonite, dacite and rhyolite) were used to remove chlorohydrocarbons from wastewater in this paper.The results show that surfactant(HDTMA-Br)can enhance the removal of chlorohydrocarbons by geomaterials, of which the modified bentonite shows the highest degree of removal of dichloromethane, trichloromethane, tetrachloromethane, trichloroethylene, tetrachloroethylene, and chlorobenzene at 9.1, 18.9, 43.0, 20.0, 32.4 and 30.3μg·g-1, respectively.A good linear correlation exists between removal of chlorohydrocarbons and Koc(which refers to the distribution coefficients of organic substances between the organic carbon of sediment and water).
-
Key words:
- chlorohydrocarbon /
- wastewater /
- geomaterial /
- zeolite /
- bentonite
-
表 1 实验材料化学成分
Table 1. Chemical compositions of experimental materials
表 2 岩矿材料吸附有机氯化物的批次实验结果
Table 2. Results of batch sorption experiments of chlorohydrocarbons
-
Leppert, D., 1994. Heavy metal sorption with clinoptilolite zeolite: Alternatives for treating contaminated soil and water. Mining Engineering, 2: 604-608. Li, W.S., Gao, B., Feng, J.F., et al., 1999. Adsorption of BTEX in simulated groundwaters using HDTMA modified clay. Chinese Environmental Science, 19(3): 211-214 (in Chinese with English abstract). Li, Z.H., Bowman, R.S., 1997. Counterion effects on the sorption of cationic surfactant and chromate on natural clinoptilolite. Environmental Science & Technology, 31(8): 2407-2412. Li, Z.H., Bowman, R.S., 1998. Sorption of perchloroethylene by surfactant-modified zeolite as controlled by surfactant loading. Environmental Science & Technology, 32(8): 2278-2282. Li, Z.H., Roy, S.J., Zou, Y.Q., et al., 1998. Long-term chemical and biological stability of surfactant-modified zeolite. Environmental Science & Technology, 32(8): 2628-2632. Liang, Q., Kang, D.X., 1994. Treatment of industrial wastewater using zeolites. Henan Chemical Engineering, 1: 27-29(in Chinese with English abstract). Lin, H.F., 1988. Application and preparation of organic bentonite. Geology Lab, 4(2): 134-139(in Chinese with English abstract). Pansini, M., 1996. Natural zeolites as cation exchangers for environment protection. Mineral Deposita, 31: 563-575. doi: 10.1007/BF00196137 Penner, D., Lagaly, G., 2000. Influence of organic and inorganic salts on the coagulation of montmorillonite dispersions. Clays and Clay Minerals, 48(2): 246-255. doi: 10.1346/CCMN.2000.0480211 Shen, Y.L., 1995. Several low-cost sorbents in wastewater treatment. Chongqing Environmental Science, 17(3): 49-53(in Chinese with English abstract). Shen, Z.L., Wang, Y.X., 2002. Review and outlook of water-rock interaction studies. Earth Science—Journal of China University of Geosciences, 27(2): 127-133(in Chinese with English abstract). Wang, Y.X., 2001. Removal of heavy metals from wastewater using low-cost sorbents: Application of biomass and geomaterials to environmental protection. Earth Science Frontiers, 8: 301-307(in Chinese with English abstract). Yang, Z.Z., Liao, L.B., Du, H.B., et al., 1999. Application of nonmetallic minerals in environmental cleanup. Bulletin of Mineralogy Petrology and Geochemistry, 18(4): 257-260 (in Chinese with English abstract). 李万山, 高斌, 冯建坊, 等, 1999. HDTMA改性粘土对模拟地下水中苯系物的吸附. 中国环境科学, 19(3): 211-214. doi: 10.3321/j.issn:1000-6923.1999.03.005 梁起, 康定学, 1994. 利用沸石处理含NH4+工业废水. 河南化工, 1: 27-29. https://www.cnki.com.cn/Article/CJFDTOTAL-HNHU199401012.htm 林鸿福, 1988. 有机膨润土的应用及其制备. 地质实验室, 4 (2): 134-139. 沈耀良, 1995. 废水处理中的几种廉价吸附剂. 重庆环境科学, 17(3): 49-53. https://www.cnki.com.cn/Article/CJFDTOTAL-CQHJ503.011.htm 沈照理, 王焰新, 2002. 水-岩相互作用研究的回顾与展望. 地球科学———中国地质大学学报, 27(2): 127-133. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX200202002.htm 王焰新, 2001. 去除废水中重金属的低成本吸附剂: 生物质和岩矿材料的环境利用. 地学前缘, 8: 301-307. doi: 10.3321/j.issn:1005-2321.2001.02.013 杨赞中, 廖立兵, 杜洪兵, 等, 1999. 非金属矿物在环境治理中的应用. 矿物岩石地球化学通报, 18(4): 257-260. https://www.cnki.com.cn/Article/CJFDTOTAL-KYDH199904013.htm -
下载:
点击查看大图
图(1) / 表(2)
计量
- 文章访问数: 3596
- HTML全文浏览量: 451
- PDF下载量: 5
- 被引次数: 0
