摘要
采用化学沉淀法,以四水硝酸钙和磷酸钠为原料,利用酵母细胞(YEAST)作为生物模板,合成了羟基磷灰石微孔材料(Y-HA),并采用X射线衍射(XRD)、红外分析、扫描电镜(SEM)进行了表征分析;研究了该材料对含Cd2+模拟废水的处理效果,考查了pH值、吸附时间、吸附剂用量等因素对吸附效果的影响,并从理论上初步分析了吸附机理。实验结果表明:该YEAST-HA材料对含Cd2+废水的去除效果明显,YEAST-HA去除水体中Cd2+的最佳吸附条件和吸附效果分别是:在pH值为7.0、反应时间35 min、HA用量0.06 g/L的条件下,其对Cd2+的去除率可达到98.17%。
Based on chemical precipitation, using Ca（ NO3 ）2 · 4H2O and Na3PO4 as raw materials, hydroxyapatite millipore material （Y-HA） was synthetized with biological template （YEAST）. The characterization methods such as X-ray diffraction （ XRD ） , infrared ray analysis （IR） , scanning electron microscope （ SEM ） were used for the determination of the Y-HA particle properties. The Y-HA millipore material was also used to remove Cd2＋ from wastewater. The effect of pH, adsorption time, adsorbent dosage on the adsorption was investigated, and the respective initial adsorption mechanism was analyzed theoretically. The rsults show that the removal rate of Cd2＋ can reach 98.17% in the condition of pH 7.0,reaction time 35 min,HA amount of 0.06 g/L.
出处
《化学工程》
CAS
CSCD
北大核心
2013年第3期6-9,共4页
Chemical Engineering(China)
基金
陕西省13115项目(2009ZDKG-69)
陕西省教育厅专项(09JK753)
西北大学大学生创新实验项目
关键词
羟基磷灰石
微孔材料
酵母菌
生物模板
吸附
hydroxyapatite
millipore material
yeast
biological template
adsorption
