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分光光度法研究了强酸性介质中松针对Cr()的吸附与转化过程。探讨了干松针的用量,反应时间,K2Cr2O7浓度对转化率的影响。在优化的条件下,K2Cr2O7溶液经松针处理6h后的转化率为91.96%,转化的表观一级反应速率常数为0.008764min-1,K2Cr2O7的浓度在0.2—0.4mmol/L范围内受吸附控制,0.4—1.5mmol/L转化受化学反应控制。为天然生物质吸附转化Cr()的污染治理提供新途径。
Spectrophotometry was used to study the adsorption and conversion of pine needles to strong Cr () in strongly acidic media. The effects of dosage of dry pine needles, reaction time and concentration of K2Cr2O7 on conversion were discussed. Under optimized conditions, the conversion rate of K2Cr2O7 solution after pine needles treatment for 6h was 91.96%, the apparent first order reaction rate constant was 0.008764min-1 and the concentration of K2Cr2O7 was controlled by adsorption in the range of 0.2-0.4mmol / L , 0.4-1.5mmol / L conversion by chemical reaction control. It provides a new way for pollution control of natural biomass adsorption and transformation Cr ().