文献类型：期刊文献

中文题名：芹菜生物质对水中Pb^(2+)的高吸附性能与机理初探

英文题名：The High Adsorption of Celery Biomass to Pb^(2+) in Water and a Preliminary Investigation on the Mechanisms

作者：张涛[1];李赛君[1];朱晓晓[1];吕金红[1];李建法[1]

机构：[1]绍兴文理学院化学化工学院

年份：2017

卷号：40

期号：5

起止页码：60

中文期刊名：环境科学与技术

外文期刊名：Environmental Science & Technology

收录：CSTPCD、、北大核心2014、CSCD2017_2018、北大核心、CSCD

基金：浙江省自然科学基金项目:磷酸盐对热解法固定植物修复材料中重金属(Pb;Cd)的强化作用(LY16B070003)

语种：中文

中文关键词：生物质;重金属;吸附;铅

外文关键词：biomass; heavy metal; adsorption; lead

中文摘要：为寻找高效低成本的生物质吸附材料以去除水体中的重金属污染物,研究了芹菜生物质对Pb^(2+)的高吸附性能与机理。结果表明,芹菜生物质对Pb^(2+)的吸附量可达100 mg/g,超过已有文献报道的绝大多数生物质吸附剂。对平衡吸附数据的热力学分析表明,芹菜生物质吸附Pb^(2+)是一个自发、吸热、熵增大的过程。结合元素分析、红外光谱、扫描电镜与能谱、X-射线衍射等表征手段,探讨了芹菜生物质对Pb^(2+)的吸附机理,表明芹菜生物质的高吸附性能与其较强的表面络合、离子交换等反应有关。

外文摘要：The high adsorption capacity of celery biomass to Pb2＋ and related mechanisms were investigated for the purpose of finding cost-efficient biosorbents to remove heavy metal contaminants in water. The results indicated that,the celery biomass can adsorb Pb2＋ with a capacity up to 100 mg/g,which is much higher than most biomass materials reported previously. The adsorption of celery biomass to Pb2＋ was a spontaneous and endothermic process with entropy increase,according to the thermodynamic analysis of adsorption equilibrium data. The adsorption mechanisms of celery biomass to Pb2＋ was discussed by combining elemental analysis,infrared spectra,scanning electronic microscope and energy-dispersing spectra,and X-ray diffraction. All these exhibited that the high adsorption of celery biomass is related to its strong reaction capacity like surface complexation and ion exchange.