A kinetic study of biogas production from Urban Solid Waste (USW) generated in Dar es Salaam city (Tanzania) is presented. An experimental bioreactor simulating mesophilic conditions of most USW landfills was develope...A kinetic study of biogas production from Urban Solid Waste (USW) generated in Dar es Salaam city (Tanzania) is presented. An experimental bioreactor simulating mesophilic conditions of most USW landfills was developed. The goal of the study was to generate the kinetic order of reaction with respect to biodegradable organic waste and use it to model biogas production from food residues mixed with fruit waste. Anaerobic biodegradation was employed under temperature range of 28℃ - 38℃. The main controls were leachate recirculation and pH adjustments to minimize acid inhibitory effects and accelerate waste biodegradation. The experimental setup comprised of three sets of bioreactors. A biodegradation rate law in differential form was proposed and the numerical values of kinetic order and rate constant were determined using initial rate method as 0.994 and 0.3093 mol0.006·day-1, respectively. Results obtained were consistent with that found in literature and model predictions were in reasonable agreement with experimental data.展开更多
目的应用初均速法及计算机处理方法研究中药制剂的稳定性。方法采用初均速法,在不同温度下进行恒温加速实验,测得中药制剂的稳定性数据。应用power Bu ilder语言编制出计算程序并处理数据。结果建立了直线回归方程,算出了相关系数,预测...目的应用初均速法及计算机处理方法研究中药制剂的稳定性。方法采用初均速法,在不同温度下进行恒温加速实验,测得中药制剂的稳定性数据。应用power Bu ilder语言编制出计算程序并处理数据。结果建立了直线回归方程,算出了相关系数,预测出药物的稳定性。结论计算机处理稳定性数据的方法既准确又快捷,该程序可推广到其他应用初均速法预测药物稳定性的数据处理中。展开更多
文摘A kinetic study of biogas production from Urban Solid Waste (USW) generated in Dar es Salaam city (Tanzania) is presented. An experimental bioreactor simulating mesophilic conditions of most USW landfills was developed. The goal of the study was to generate the kinetic order of reaction with respect to biodegradable organic waste and use it to model biogas production from food residues mixed with fruit waste. Anaerobic biodegradation was employed under temperature range of 28℃ - 38℃. The main controls were leachate recirculation and pH adjustments to minimize acid inhibitory effects and accelerate waste biodegradation. The experimental setup comprised of three sets of bioreactors. A biodegradation rate law in differential form was proposed and the numerical values of kinetic order and rate constant were determined using initial rate method as 0.994 and 0.3093 mol0.006·day-1, respectively. Results obtained were consistent with that found in literature and model predictions were in reasonable agreement with experimental data.
文摘目的应用初均速法及计算机处理方法研究中药制剂的稳定性。方法采用初均速法,在不同温度下进行恒温加速实验,测得中药制剂的稳定性数据。应用power Bu ilder语言编制出计算程序并处理数据。结果建立了直线回归方程,算出了相关系数,预测出药物的稳定性。结论计算机处理稳定性数据的方法既准确又快捷,该程序可推广到其他应用初均速法预测药物稳定性的数据处理中。
