CAJ | 학술논문

以城市污水厂脱水污泥为原料，采用ZnCl2活化法制备污泥活性炭，以品红吸附值及比表面积为评价指标设计正交实验。结果表明：主要影响因素为热解温度，ZnCl2浓度，浸泡时间及固液比的影响较小。最佳制备条件为：热解温度550℃，ZnCl2浓度3 mol／L，浸泡时间为5 h，固液比1∶3。采用Coats-Redfern积分法对ZnCl2活化后的污泥热失重过程中450℃～650℃温度段进行分析，该温度段在n＝2时方程拟合线性较好。反应活化能为146．04 KJ／mol，频率因子为3．95×107 s－1，动力学方程为：dαdt ＝3．95×107exp (－17565．9191)(T 1－α)2。
이성시오수엄탈수오니위원료，채용ZnCl2활화법제비오니활성탄，이품홍흡부치급비표면적위평개지표설계정교실험。결과표명：주요영향인소위열해온도，ZnCl2농도，침포시간급고액비적영향교소。최가제비조건위：열해온도550℃，ZnCl2농도3 mol／L，침포시간위5 h，고액비1∶3。채용Coats-Redfern적분법대ZnCl2활화후적오니열실중과정중450℃～650℃온도단진행분석，해온도단재n＝2시방정의합선성교호。반응활화능위146．04 KJ／mol，빈솔인자위3．95×107 s－1，동역학방정위：dαdt ＝3．95×107exp (－17565．9191)(T 1－α)2。
Sludge activated carbon was prepared by ZnCl2 activation using dewatered sludge of a mu-nicipal wastewater treatment plant as the raw material.An orthogonal test was conducted by using the adsorption property of fuchsin and specific surface area as the evaluation indicators.The main influential factor of preparing the sludge activated carbon is pyrolysis temperature,followed by the concentration,the soaking time of the activator and the solid-liquid ratio.The optimum preparation conditions were pyrolysis temperature of 550 ℃,ZnCl2 concentration of 3 mol/L,soaking time of 5h,and solid-liquid ratio of 1∶3,respectively.The integral method of Coats-Redfern was employed to analyse the pyrolysis process of the sludge activated by ZnCl2 at the temperature range of 450 ~650 ℃.A kinetic equation ofdαdt =3.95 ×107exp (-17 565.919 1 ) (T 1 -α) 2 was presented.The results indicate that the linearity fits well during the temperature range when n=2 with the activation energy and the frequency factor being 146.04 kJ/mol and 3.95 ×107 s-1 ,respectively.