摘要
以番茄皮渣为生物质原材料,FeCl_(3)·6H_(2)O和FeCl_(2)·4H_(2)O作为活化剂,通过浸渍热解法制得磁性生物质碳材料(MBM)。利用扫描电子显微镜(SEM)、傅里叶变换红外光谱(FTIR)、X射线粉末衍射(XRD)、氮气吸脱附测试(BET)等技术表征,对MBM吸附茶叶提取物中有机氯类农药六六六(BHC)性能进行研究。考察MBM不同投加量、洗脱液用量和吸附时间对BHC吸附率的影响,并模拟一级动力学、二级动力学、颗粒内扩散模型进行实验数据拟合。结果表明,孔隙结构以微孔为主,孔隙宽度集中在0.5~1.0 nm,表面主要有—OH、—C—O等含氧官能团,MBM对BHC的吸附率随着投加量和吸附时间的增加而增加;吸附行为遵循一级动力学模型。MBM应用于茶叶中BHC的4种异构体的检测净化步骤,吸附净化率达100%,加标回收率91.0%~112.0%。
The study conducted to analyze the performance of a magnetic biomass carbon material(MBM)for the adsorption of BHC from tea using tomato skin residue,FeCl_(3)·6H_(2)O,and FeCl_(2)·4H_(2)O as activators.The researchers used scanning electron microscopy(SEM),Fourier transform infrared spectroscopy(FTIR),X-ray powder diffraction(XRD),and nitrogen absorption test(BET)to examine the pore structure,surface functional,and adsorption kinetics of MBM.The researchers also investigated the effects of different MBM dosages,eluate amount,and adsorption time on the adsorption rate of BHC and simulated the first-order dynamics,second-order dynamics,and intra-particle diffusion models for data fitting.The study found that the pore structure of MBM is dominated by micropores,with a pore width concentration of 0.5~1.0 nm.The surface mainly contains—OH and—C—O functional groups.The adsorption rate of BHC by MBM increases with the increase in injection and adsorption time,and the adsorption behavior follows the first-order kinetic model.Furthermore,the researchers applied MBM to the detection and purification steps of the four isomers of BHC in tea.The adsorption purification rate was 100%,and the spike recovery rate was 91.0%~112.0%.
作者
冯秀琳
罗宇蕙
杨金辉
任旭
段江粉
冯东洋
FENG Xiulin;LUO Yuhui;YANG Jinhui;REN Xu;DUAN Jiangfen;FENG Dongyang(Analysis and Testing Center,Xinjiang University,Urumqi 830000,China;College of Chemistry,Xinjiang University,Urumqi 830000,China)
出处
《应用化工》
北大核心
2025年第1期62-67,共6页
Applied Chemical Industry
基金
2024年中央引导地方科技发展专项项目(ZYYD2024ZY18)
新疆维吾尔自治区自然科学基金(2021D01C066)。
关键词
番茄皮渣
生物质碳材料
茶叶
BHC
吸附
tomato skin residue
biomass carbon material
tea leaves
BHC
adsorption
