摘要
六价铬(Cr(VI))是最危险的无机毒物之一,会引起人体致癌、诱导有机体突变及对肝脏的损伤。水体铬污染已危及环境和人类健康。含铬污水吸附处理方法是一种运用广泛且卓有成效的方法。商业活性炭因其表面积大、高吸附性能和表面活性大成为重金属优良的吸附材料,但其成本较高,而来自农业废弃物或植物的吸附材料具有来源丰富、成本低廉、处理简单和吸附能力强等特点,是比较经济的吸附材料。对近年来含Cr(VI)污水吸附处理的研究文献进行分析,比较了来自植物的各类廉价吸附材料,并对此类吸附材料的吸附容量、影响因素(pH值、接触时间、温度、金属初始浓度)、改性方法、再生利用和吸附机理进行了分析和总结,为进一步研究提供参考。
Chromium（Cr） is one of the most dangerous inorganic pollutants in terms of its carcinogenic and mutagenic effects and toxicity to the liver. Cr contamination in water has endangered the environment and human health. Chromium wastewater treatment by adsorbent adsorption is a widely used and effective method. Due to its large surface area, high adsorption capacity and surface reactivity, activated carbon be- comes a good adsorbent for heavy metals removal. But the use of activated carbon is relatively costly. Ad- sorbents derived from agriculture waste or plants are fairly economic because of their abundant source, low cost, easy treatment and strong adsorption capability. This paper reviews literature in recent years about chromium wastewater treatment by adsorption, compares various low-cost adsorbents from plants, analy- zes and concludes the adsorption capacity, affecting factors （such as pH value, contact time, temperature, and initial concentration of the metal）, modified methods , and regeneration and adsorption mechanism in order to provide references for further research.
出处
《安全与环境工程》
CAS
2016年第1期51-58,共8页
Safety and Environmental Engineering
基金
国家水体污染控制与治理科技重大专项项目(2012ZX07101-003)
江苏省高级访问学者计划项目(2014FX036)
金肯职业技术学院教学质量工程建设项目(2015KY04)
