河北联合大学学报(自然科学版)
河北聯閤大學學報(自然科學版)
하북연합대학학보(자연과학판)
Journal of Hebei United university natural sclence edition
2014年
2期
35-40
,共6页
钢渣%磷%反应动力学%等温吸附
鋼渣%燐%反應動力學%等溫吸附
강사%린%반응동역학%등온흡부
steel slag%phosphorus%reaction kinetics%isotherms adsorption
以钢渣为主要原料,添加少量粘土和造孔剂制备钢渣滤料。通过批次吸附实验,研究了钢渣滤料对废水中磷的吸附特性。结果表明,不同温度条件下钢渣滤料对磷的吸附过程均符合准二级反应动力学方程,反应的活化能>40kJ/mol。等温吸附过程符合Langmuir方程,在20℃、30℃和40℃时的最大吸附量分别为1.166、1.826和2.422 mg/g。热力学参数△G0、△H0和△S0表明,该过程是自发、吸热、熵增型反应,且磷的吸附以化学吸附为主。
以鋼渣為主要原料,添加少量粘土和造孔劑製備鋼渣濾料。通過批次吸附實驗,研究瞭鋼渣濾料對廢水中燐的吸附特性。結果錶明,不同溫度條件下鋼渣濾料對燐的吸附過程均符閤準二級反應動力學方程,反應的活化能>40kJ/mol。等溫吸附過程符閤Langmuir方程,在20℃、30℃和40℃時的最大吸附量分彆為1.166、1.826和2.422 mg/g。熱力學參數△G0、△H0和△S0錶明,該過程是自髮、吸熱、熵增型反應,且燐的吸附以化學吸附為主。
이강사위주요원료,첨가소량점토화조공제제비강사려료。통과비차흡부실험,연구료강사려료대폐수중린적흡부특성。결과표명,불동온도조건하강사려료대린적흡부과정균부합준이급반응동역학방정,반응적활화능>40kJ/mol。등온흡부과정부합Langmuir방정,재20℃、30℃화40℃시적최대흡부량분별위1.166、1.826화2.422 mg/g。열역학삼수△G0、△H0화△S0표명,해과정시자발、흡열、적증형반응,차린적흡부이화학흡부위주。
Slag filter material made from steel slag and clay was used for phosphate adsorption ,and adsorption char-acteristic was studied by batch experiments .Results showed that the uptake of phosphate on slag filter material at different temperature fitted with pseudo-second-order model,and the activation energy was more than 40kJ/mol.In addition,isotherm adsorption data on slag filter material followed the Langmuir model well ,and the maximum ad-sorption capacity at 20℃,30℃and 40℃were 1.166,1.826 and 2.422mg/g,respectively.Thermodynamic param-eters△G0 ,△H0 and△S0 showed that the adsorption was spontaneous , endothermic and entropy increase process and chemical adsorption was dominant for phosphate uptake .