碳素纤维在近岸海洋污染物亚硝酸盐、总氨态氮处理中的应用
发布时间：2018-10-19 16:01
【摘要】：为探索高效的近岸海水污染处理及生态修复方法,采用硝酸氧化法对黏胶基碳素纤维(Carbon fiber,CF)进行氧化改性,并利用改性后的黏胶基CF处理近岸模拟污染海水,研究了改性CF对海水中亚硝酸盐、总氨态氮等污染物的吸附情况,考察了黏胶基CF氧化改性时间等因素对吸附处理效果的影响,确定了改性黏胶基CF处理近岸污染海水的优化工艺条件。结果表明:黏胶基CF氧化改性时间、CF投加量、亚硝酸盐初始浓度、总氨态氮初始浓度、吸附时间、海况、p H等因素对CF的吸附性能均有不同程度的影响,当反应条件相同时CF的吸附性能较稳定;CF对亚硝酸盐的吸附效果较好,对总氨态氮的吸附效果次之;通过正交试验确定黏胶基CF材料修复模拟近岸海水的优化条件,即在吸附时间为3 h、海况为3级、投加量为0.01 g、亚硝酸盐初始浓度为4 mg/L、总氨态氮初始浓度为60 mg/L、改性时间为1.5 h、p H为8的条件下,CF对亚硝酸盐的去除率为84.56%,对总氨态氮的去除率为45.63%。本研究结果为CF在近岸海洋环境修复中的应用奠定了基础。
[Abstract]:In order to explore an efficient method for the treatment and ecological restoration of coastal seawater pollution, the modified viscose based carbon fiber (Carbon fiber,CF) was oxidized by nitric acid oxidation method, and the modified viscose based CF was used to treat the inshore simulated polluted sea water. The adsorption of nitrite, total ammonia nitrogen and other pollutants in seawater by modified CF was studied. The optimized process conditions for the treatment of inshore polluted seawater by modified viscose based CF were determined. The results show that the factors such as the oxidation modification time of viscose based CF, the dosage of CF, the initial concentration of nitrite, the initial concentration of total ammonia nitrogen, the adsorption time and the sea condition, p H have different effects on the adsorption performance of CF. When the reaction conditions are the same, the adsorption performance of CF is more stable, the adsorption effect of CF to nitrite is better, the adsorption effect of total ammonia nitrogen is the second, and the optimum conditions for repairing simulated coastal seawater with CF based on viscose are determined by orthogonal test. That is, the adsorption time is 3 h and the sea condition is 3 h. The removal rate of nitrite was 84.56 and the removal rate of total ammonia nitrogen was 45.63 when the initial concentration of nitrite was 0.01g, the initial concentration of nitrite was 4 mg/L, the initial concentration of ammonia nitrogen was 60 mg/L, the modification time was 1.5hp / h, the removal rate of nitrite was 84.56g. The results of this study lay a foundation for the application of CF in the restoration of coastal marine environment.
【作者单位】： 大连海洋大学海洋科技与环境学院;
【基金】：国家海洋公益性行业科研专项(20130500) 辽宁省大型仪器设备共享服务能力建设补贴项目(2016LD0105)
【分类号】：X55
[Abstract]:In order to explore an efficient method for the treatment and ecological restoration of coastal seawater pollution, the modified viscose based carbon fiber (Carbon fiber,CF) was oxidized by nitric acid oxidation method, and the modified viscose based CF was used to treat the inshore simulated polluted sea water. The adsorption of nitrite, total ammonia nitrogen and other pollutants in seawater by modified CF was studied. The optimized process conditions for the treatment of inshore polluted seawater by modified viscose based CF were determined. The results show that the factors such as the oxidation modification time of viscose based CF, the dosage of CF, the initial concentration of nitrite, the initial concentration of total ammonia nitrogen, the adsorption time and the sea condition, p H have different effects on the adsorption performance of CF. When the reaction conditions are the same, the adsorption performance of CF is more stable, the adsorption effect of CF to nitrite is better, the adsorption effect of total ammonia nitrogen is the second, and the optimum conditions for repairing simulated coastal seawater with CF based on viscose are determined by orthogonal test. That is, the adsorption time is 3 h and the sea condition is 3 h. The removal rate of nitrite was 84.56 and the removal rate of total ammonia nitrogen was 45.63 when the initial concentration of nitrite was 0.01g, the initial concentration of nitrite was 4 mg/L, the initial concentration of ammonia nitrogen was 60 mg/L, the modification time was 1.5hp / h, the removal rate of nitrite was 84.56g. The results of this study lay a foundation for the application of CF in the restoration of coastal marine environment.
【作者单位】： 大连海洋大学海洋科技与环境学院;
【基金】：国家海洋公益性行业科研专项(20130500) 辽宁省大型仪器设备共享服务能力建设补贴项目(2016LD0105)
【分类号】：X55
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