CAJ | 학술논문

研究了壳聚糖固定化枯草芽孢杆菌吸附铜离子的性能，分析了 pH、吸附剂投加量、温度、铜离子初始浓度和时间对铜离子吸附的影响。结果表明， pH对铜离子的吸附有较大的影响。此外，固定化枯草芽孢杆菌吸附剂比空白吸附剂具有更强的吸附性能。整个吸附过程符合朗缪尔吸附模型(R2=0.994)，最大吸附量为100.70 mg/L。动力学模型拟合结果表明，实验符合准二级动力学模型，线性相关指数大于0.999。吸附剂能在0.1 mol/L NaOH溶液中被成功解吸。
연구료각취당고정화고초아포간균흡부동리자적성능，분석료 pH、흡부제투가량、온도、동리자초시농도화시간대동리자흡부적영향。결과표명， pH대동리자적흡부유교대적영향。차외，고정화고초아포간균흡부제비공백흡부제구유경강적흡부성능。정개흡부과정부합랑무이흡부모형(R2=0.994)，최대흡부량위100.70 mg/L。동역학모형의합결과표명，실험부합준이급동역학모형，선성상관지수대우0.999。흡부제능재0.1 mol/L NaOH용액중피성공해흡。
The ability of Bacillus subtilis immobilized into chitosan beads (BICB) to remove Cu(II) from aqueous solution was studied. The effects of pH, biosorbent dosage, temperature, initial Cu(II) concentration and contact time on removal of Cu(II) were studied using batch adsorption experiments. The results show that the Cu(II) absorption strongly depends on pH and the optimum pH is 6. Compared with chitosan beads (CB), the BICB has higher efficiency and capacity on Cu(II) removal. The Langmuir isotherm model (R2=0.994) is proved to fit the equilibrium data best. The maximum adsorption capacity determined from Langmuir model is 100.70 mg/g. The kinetic data fit well with the pseudo-second-order model and the correlation coefficient is greater than 0.999. The biosorbents are successfully regenerated using 0.1 mol/L NaOH solution.