摘要
研究了非活体生物质——玉米芯对Cr6+的吸附作用,并探讨了溶液的pH值、Cr6+初始浓度、吸附时间及温度等因素对Cr6+吸附效果的影响。结果表明,改性玉米芯对Cr6+有很好的吸附作用,在温度为33℃,Cr6+初始质量浓度为20mg/L的Cr6+溶液50mL,溶液的pH值为2.0,改性玉米芯用量为1.0g,振荡时间为120min的条件下,改性玉米芯对Cr6+的吸附率达到了98.16%。
Adsorption of Cr^6＋ by non-living biomass material-corncob powder was studied. The effects of pH value, initial Cr^6＋ concentration, contact time and temperature on adsorption Were investigated. The results indicated that modified corncob powder had good adsorption to Cr^6＋. Under the condition of temperature at 33 ℃, pH at 2.0 and contact time of 120min, with 1.0 g modified corncob powder and 50 mLCr^6＋ solution which concentration is 20 mg/L, the adsorption rate of Cr^6＋ can be up to 98.16%.
出处
《环境科技》
2009年第3期41-43,共3页
Environmental Science and Technology
关键词
改性玉米芯
Cr6+
吸附
Modified corncob powder
Cr^6＋
Adsorption
