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通过硅碳素(ANJ.SIC)去除Mn~(2+)的静态吸附试验,考察硅碳素对地下水中Mn~(2+)的吸附作用及其影响因素。研究结果表明硅碳素粒径大小、投加量、吸附时间对Mn~(2+)的去除效果有较大的影响,最佳粒径为0.6～0.9 mm,最佳投加量为50 g/L,最佳吸附时间为60 min;原水pH对Mn~(2+)的去除效果影响不大,酸性、中性和碱性条件下去除率都可以达到90%以上。另外,硅碳素对Mn~(2+)表现出很强的吸附能力,最大饱和吸附量为6.954 mg/g且吸附速率快,采用Langmuir吸附等温线(R~2=0.998 7)能较好描述硅碳素吸附Mn~(2+)的过程。研究表明硅碳素在高锰地下水处理方面有较强的利用价值。
The adsorption of Mn ~ (2+) by silicon-carbon (ANJ.SIC) was studied. The adsorption of Mn ~ (2+) on silicon in groundwater and its influencing factors were investigated. The results show that the size of silicon carbon, the dosage and the adsorption time have a significant effect on the removal of Mn 2+. The optimum particle size is 0.6-0.9 mm and the optimum dosage is 50 g / L, the optimum adsorption time is 60 min; the original water pH has little effect on the removal of Mn 2+, and the removal rate can reach more than 90% under acidic, neutral and alkaline conditions. In addition, silicon carbon showed a strong adsorption capacity for Mn 2+ with a maximum adsorption capacity of 6.954 mg / g and a fast adsorption rate. Langmuir adsorption isotherm (R 2 = 0.998 7) Describe the silicon carbon adsorption of Mn ~ (2+) process. Studies have shown that silicon carbon in high manganese groundwater treatment has a strong use value.