期刊论文

中文

化工新型材料

1006-3536

2022

50

02

222-228

国家自然科学基金项目（No.11475080）;国家自然科学基金青年基金项目（No.51904155）；

本校为第一机构

高温厌氧制备玉米芯生物炭，并利用植酸对其改性，获得富含官能团且孔隙率高的高效功能化生物炭复合材料。以水中U（VI）为处理对象，探究磷酸盐功能化生物炭对U（VI）的吸附能力和机制。试验结果表明，U（VI）初始浓度为10 mg/L时，最佳吸附条件为30 ℃，pH=4，材料投加量0.8 mg/L，120 min后吸附达到平衡，此时U（VI）去除率达到95.9%。IPCB对U（VI）的吸附过程符合准二级动力学模型和Langmiur等温模型，以化学吸附为主；且4次吸附-解析试验后，U（VI）去除率仍然达到91.2%，说明IPCB可以重复利用。EDS和XPS等表征方法证明：植酸改性增加了玉米芯生物炭表面的磷酸基团；IPCB对U（VI）的吸附机...

Corncob biochar was prepared by high-temperature anaerobic method, and modified by phytic acid to obtain highly functional biochar composites phosphate functional biochar(IPCB)rich in functional groups and with high porosity.Taking U(Ⅵ) in water as the treatment object, the adsorption capacity, and the mechanism of the IPCB on U(Ⅵ) were investigated.The experimental results showed that when the initial concentration of U(Ⅵ) was 10 mg/L,the optimal adsorption condition was 30℃,pH=4,the material dosage was 0.8 mg/L,and the adsorption reached ...