摘要
为探究芒萁生物炭对水中Pb^(2+)的去除效果,在600℃下采用热解法制备芒萁生物炭,通过比表面积分析(BET)、扫描电子显微镜(SEM)、能谱分析(EDS)和红外光谱(FTIR)等方法表征芒萁和生物炭的性质与结构,研究了溶液初始pH值、生物炭添加量和溶液初始浓度对芒萁生物炭吸附Pb^(2+)作用的影响。结果表明,芒萁生物炭对Pb^(2+)的去除率和吸附量随pH值增加而增大;生物炭添加量增加,对Pb^(2+)的去除率也增大,但吸附量迅速降低;随着Pb^(2+)初始溶液浓度的增加,去除率呈下降趋势,而吸附量逐渐增大。将芒萁制备成生物炭不仅能够有效吸附水体中的Pb^(2+),改善水体质量,而且能够实现资源的有效利用。
In order to investigate the effect of Dicranopteris pedata biochar on the removal of Pb^(2+)from water,Dicranopteris pedata biochar was prepared by pyrolyzing at a temperature of 600℃under an oxygen-limited condition.The properties and structures of Dicranopteris pedata and biochar were characterized by using Brunauer-Emmett-Teller(BET)surface area measurements,scanning electron microcopy(SEM),energy dispersive spectroscopy(EDS)and fourier transform infrared spectroscopy(FTIR).The effects of initial solution pH,biochar addition and initial solution concentration on the adsorption of Pb^(2+)by Dicranopteris pedata biochar were investigated.The results showed that the removal rate and adsorption capacity of Pb^(2+) by Dicranopteris pedata biochar increased with the increase of pH;the removal rate of Pb^(2+)increased with the increase of biochar addition,but the adsorption capacity decreased rapidly;with the increase of the initial solution concentration of Pb^(2+),the removal rate showed a decreasing trend,while the adsorption capacity increased gradually.The preparation of Dicranopteris pedata into biochar can not only effectively adsorb Pb^(2+)in water and improve the quality of water,but also can achieve the effective use of resources.
作者
余彩玲
陈志强
陈志彪
姜勇祥
冯柳俊
YU Cailin;CHEN Zhiqiang;CHEN Zhibiao;JIAN Yongxiang;FENG Liujun(College of Geographic Sciences,College of Carbon Neutral Future Technology,Fujian Normal University,Fuzhou 350007,China;Key Laboratory for Subtropical Mountain Ecology,Ministry of Science and Technology,Fuzhou 350007,China)
出处
《山东化工》
2025年第10期211-214,220,共5页
Shandong Chemical Industry
基金
福建省自然科学基金项目(No.2020J01143)
福建省厅局项目“南方离子型稀土矿区的生物修复及废水污染调控”。
关键词
芒萁生物炭
重金属
铅离子
吸附
Dicranopteris pedata biochar
heavy metal
lead ion
adsorption
