CAJ | 학술논문

利用大肠杆菌JM109去除含铀废水,研究了在pH值、温度、吸附时间、铀离子的初始浓度、菌体浓度等,耐辐射奇球菌对铀的吸附效果.吸附试验结果表明耐辐射奇球菌有较高的吸附铀的能力,其中对低浓度的含铀废水处理潜力较大.当pH值为4.5时吸附效果最好,投加菌体浓度最佳为0.1 g/L,大约50 min左右达到吸附平衡,吸附量最高达到693.8 mg/g.吸附热力学研究其更符合Freundlich等温模型,吸附过程符合准二级动力学模型.
이용대장간균JM109거제함유폐수,연구료재pH치、온도、흡부시간、유리자적초시농도、균체농도등,내복사기구균대유적흡부효과.흡부시험결과표명내복사기구균유교고적흡부유적능력,기중대저농도적함유폐수처리잠력교대.당pH치위4.5시흡부효과최호,투가균체농도최가위0.1 g/L,대약50 min좌우체도흡부평형,흡부량최고체도693.8 mg/g.흡부열역학연구기경부합Freundlich등온모형,흡부과정부합준이급동역학모형.
Escherichia coli JM109 was used to adsorpt the low concentration uranium from wastewater in this paper. Also the adsorption efficiencies for this bacterium to uranium un-der the different influencing factors ( such as:pH value,temperature,adsorption time,the initial concentration of uranium, cell concentration, etc. ) were studied. The experimental results showed that U was favorable to be adsorbed by Escherichia coli JM109,especially to wastewater in low concentration of uranium. Optimum biosorption was observed when the solution pH was 4. 5,the adsorbent dosage of 0. 1 g/L and the adsorption equilibrium was established in about 50 min,the high adsorption capacity of 693. 8 mg/g. Isotherm study shows that the Freundlich adsorption model is better,and the kinetic model of Escherichia coli JM109 can be described to the pseudo-second-order model.