Adsorptive performance and mechanism exploration of l-lysine functionalized celluloses for enhanced removal of Pb(II) from aqueous medium

吸附 水溶液 化学 化学吸附 弗伦德利希方程 纤维素 核化学 扩散 色谱法 有机化学 热力学 物理
作者
Simiao Wu,Haoyuan Jiang,Jilai Lu
出处
期刊:International Journal of Biological Macromolecules [Elsevier BV]
卷期号:242: 124997-124997 被引量:14
标识
DOI:10.1016/j.ijbiomac.2023.124997
摘要

In this study, two novel biosorbents of l-lysine grafted cellulose (L-PCM, L-TCF) were prepared for Pb(II) removal from aqueous solutions. Various adsorption parameters were surveyed, such as adsorbent dosages, initial concentration of Pb(II), temperature and pH, using adsorption techniques. At normal temperature, less adsorbent can achieve better adsorption capacity (89.71 ± 0.27 mg g−1 with 0.5 g L−1 of L-PCM, 16.84 ± 0.02 mg g−1 with 3.0 g L−1 of L-TCF). The pH range of application for L-PCM was 4–12 and that of L-TCF was 4–13. The adsorption of Pb(II) by biosorbents went through the boundary layer diffusion stage and void diffusion stage. The adsorption mechanism was chemisorption based on multilayer heterogeneous adsorption. The pseudo-second-order model fitted the adsorption kinetics perfectly. The Freundlich isotherm model adequately described Multimolecular equilibrium relationship between Pb(II) and biosorbents; the predicted maximum adsorption capacities of the two adsorbents were 904.12 and 46.74 mg g−1, respectively. The results showed that the adsorption mechanism was the electrostatic attraction between Pb(II) and -COOH and the complexation between Pb(II) and -NH2. This work demonstrated that l-lysine modified cellulose-based biosorbents have great potential in the field of Pb(II) removal from aqueous solutions.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
刚刚
可爱的函函应助沉默初雪采纳,获得10
1秒前
XZY发布了新的文献求助10
1秒前
可乐冰淇淋完成签到,获得积分10
2秒前
4秒前
4秒前
Ljc发布了新的文献求助10
4秒前
5秒前
6秒前
大海风完成签到,获得积分10
7秒前
奥特波顿发布了新的文献求助10
8秒前
刘丽梅完成签到 ,获得积分10
10秒前
10秒前
wangdanli完成签到,获得积分10
11秒前
12秒前
13秒前
13秒前
x1981完成签到,获得积分10
14秒前
小西完成签到 ,获得积分10
14秒前
嘻哈发布了新的文献求助10
14秒前
15秒前
Billy发布了新的文献求助10
15秒前
17秒前
17秒前
奥特波顿完成签到,获得积分10
18秒前
刘Liam完成签到 ,获得积分10
19秒前
无花果应助wangdanli采纳,获得10
19秒前
吱吱发布了新的文献求助10
20秒前
FashionBoy应助糊涂的猎豹采纳,获得30
20秒前
wtt发布了新的文献求助10
20秒前
21秒前
哈哈哈哈发布了新的文献求助10
22秒前
23秒前
24秒前
852应助RNAPW采纳,获得10
24秒前
嘎嘎嘎完成签到,获得积分10
24秒前
25秒前
123完成签到,获得积分20
26秒前
沉默初雪发布了新的文献求助10
27秒前
今后应助paixxxxx采纳,获得10
28秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3975661
求助须知:如何正确求助?哪些是违规求助? 3520000
关于积分的说明 11200535
捐赠科研通 3256410
什么是DOI,文献DOI怎么找? 1798247
邀请新用户注册赠送积分活动 877490
科研通“疑难数据库(出版商)”最低求助积分说明 806390