[1]陈泰文,李晓丹,张溶,等.改性蓖麻水热炭对重金属和染料的吸附特性及机制[J].中国给水排水,2026,42(13):84-91.
　ChenTaiwen,LiXiaodan,ZhangRong,et al.Adsorption Characteristics and Mechanism of Heavy Metals and Dyes by Modified Castor-based Hydrothermal Carbon[J].China Water & Wastewater,2026,42(13):84-91.
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改性蓖麻水热炭对重金属和染料的吸附特性及机制

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第42卷 期数: 2026年第13期 页码: 84-91 栏目: 出版日期: 2026-07-01
Title:
Adsorption Characteristics and Mechanism of Heavy Metals and Dyes by Modified Castor-based Hydrothermal Carbon
作者:
陈泰文1， 李晓丹2， 张溶2， 闫钰2， 吕聪1
（1.吉林大学 新能源与环境学院，吉林 长春 130026；2.中国市政工程东北设计研究总院有限公司，吉林 长春 130012）
Author(s):
Chen　Taiwen1， Li　Xiaodan2， Zhang　Rong2， Yan　Yu2， Lü　Cong1
（1. College of New Energy and Environment， Jilin University， Changchun 130026， China； 2. China Northeast Municipal Engineering Design and Research Institute Co. Ltd.， Changchun 130012， China）
关键词:
水热炭;  蓖麻;  吸附;  重金属;  染料
Keywords:
hydrothermal carbon;  castor;  adsorption;  heavy metal;  dye
摘要:
以蓖麻叶、秆为原料，聚乙烯亚胺为胺基接枝改性剂，制备了一种能够高效选择性吸附复杂水体中重金属的功能性水热炭。通过扫描电子显微镜（SEM）、N2吸附-脱附曲线模型（BET）和傅里叶变换红外光谱（FTIR）表征方法，分析了水热炭的形貌与孔隙结构，阐明了其对Cu（Ⅱ）、Pb（Ⅱ）、Cr（Ⅵ）和甲基橙（MO）染料的吸附机制。结果表明，所制备的水热炭富含胺基及亚胺基、羧基、羟基等官能团，对Cu（Ⅱ）、Pb（Ⅱ）、Cr（Ⅵ）和MO的吸附容量分别为58.48、226.25、34.04和63.21 mg/g，其吸附动力学与吸附等温线模型拟合证实了吸附过程以单层化学吸附为主，吸附机制主要为含氮官能团（—NH2/—NH）配位去除、静电相互作用和含氧官能团（—C=O/—COOH）的络合作用。重金属与有机染料的复合吸附实验证明了吸附剂对于重金属和有机物的同步去除性能，提高了吸附剂应用于复杂水体治理的经济-成本效益。
Abstract:
Using castor leaves and stems as raw materials and polyethyleneimine as the amino grafting modifier, a functional hydrothermal carbon capable of efficiently and selectively adsorbing heavy metals in complex water bodies was prepared. The morphology and pore structure of the hydrothermal carbon were analyzed by scanning electron microscopy (SEM), N2 adsorption-desorption curve modeling (BET), and Fourier transform infrared spectroscopy (FTIR), and the adsorption mechanism for Cu(Ⅱ), Pb(Ⅱ), Cr(Ⅵ), and methyl orange (MO) dye in water was elucidated. The results showed that the prepared hydrothermal carbon was rich in functional groups such as amine/imine groups, carboxyl groups, and hydroxyl groups, and its adsorption capacities for Cu(Ⅱ), Pb(Ⅱ), Cr(Ⅵ), and MO were 58.48 mg/g, 226.25 mg/g, 34.04 mg/g, and 63.21 mg/g, respectively. Fitting of adsorption kinetics and adsorption isotherm models confirmed that the adsorption process was dominated by monolayer chemical adsorption, and the adsorption mechanism primarily involved coordination removal by nitrogen-containing functional groups (—NH2/—NH), electrostatic interactions, and complexation by oxygen-containing functional groups (—C=O/—COOH). Co-adsorption experiments of heavy metals and organic dyes demonstrated the simultaneous removal of heavy metals and organic matter by the adsorbent, thereby improving the economic cost-effectiveness of the adsorbent for the treatment of complex water bodies.
更新日期/Last Update: 2026-07-01