Efficient adsorption of Pb(II) by sodium dodecyl benzene sulfonate intercalated calcium aluminum hydrotalcites: kinetic, isotherm, and mechanisms

吸附 层状双氢氧化物 化学 朗缪尔 弗伦德利希方程 朗缪尔吸附模型 水滑石 离子交换 无机化学 X射线光电子能谱 核化学 化学工程 离子 催化作用 有机化学 工程类
作者
Rongying Zeng,Wenqing Tang,Qianyi Zhou,Xing Liu,Yan Liu,Shuzhan Wang,Zhen Chen,Nengzhong Yi,Zefen Wang,Jun Chen
出处
期刊:Environmental Science and Pollution Research [Springer Science+Business Media]
卷期号:29 (30): 46161-46173 被引量:9
标识
DOI:10.1007/s11356-022-19129-7
摘要

Two novel adsorbents of CaAl-LDHs and sodium dodecyl benzene sulfonate (SDBS) intercalated CaAl-LDHs (SDBS-CaAl-LDHs) were successfully prepared by co-precipitation. The main composition and physical properties of two samples were characterized by XRD, XPS, FT-IR, TG, and SEM. Batch adsorption experiments were conducted to study the effect of pH, adsorption time, and initial concentration of Pb2+. The results showed that the prime adsorption conditions obtained were pH of 5.2 after 60 min with the initial concentration of 300 mg g-1 for CaAl-LDHs and 350 mg g-1 for SDBS-CaAl-LDHs. At 303 K, the adsorption capacities and removal rates of CaAl-LDHs and SDBS-CaAl-LDHs were found to be 456.05 mg g-1, 91.21% and 682.26 mg g-1, 97.47%, respectively. For CaAl-LDHs, the kinetic data for Pb2+ was best fitted with pseudo-2nd-order model, and the adsorption isotherms followed Langmuir and Freundlich isotherm model. The adsorption data of SDBS-CaAl-LDHs can be best described by the pseudo-second-order kinetic and Langmuir model. The Pb2+ adsorption mechanism on SDBS-CaAl-LDHs was explored by XRD, XPS, and SEM, and the important roles of the electrostatic attraction, precipitation, complexation, and ion exchange were demonstrated. The Langmuir adsorption capacities for SDBS-CaAl-LDHs were 797.63, 828.76, and 854.29 mg g-1 at 293 k, 303 k, and 313 k, respectively. Thus, SDBS-CaAl-LDHs may be a highly economical adsorbent for the treatment of contaminated water.
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
2秒前
4秒前
future完成签到 ,获得积分10
4秒前
wwl关闭了wwl文献求助
5秒前
5秒前
5秒前
lzw完成签到,获得积分10
5秒前
帆帆发布了新的文献求助10
5秒前
量子星尘发布了新的文献求助10
5秒前
悦耳冷松完成签到,获得积分10
6秒前
7秒前
7秒前
8秒前
独特乘云发布了新的文献求助10
9秒前
悦耳冷松发布了新的文献求助10
9秒前
9秒前
dian完成签到 ,获得积分10
10秒前
吃饱饱完成签到 ,获得积分10
10秒前
彭于晏应助大力绿柏采纳,获得10
11秒前
11秒前
ri_290完成签到 ,获得积分10
12秒前
贾克斯发布了新的文献求助10
12秒前
何处芳歇发布了新的文献求助10
12秒前
小当家完成签到,获得积分10
12秒前
nightmare发布了新的文献求助10
13秒前
Ava应助独特乘云采纳,获得10
15秒前
义气黄焖排骨完成签到,获得积分10
15秒前
古藤完成签到 ,获得积分10
16秒前
shinian完成签到 ,获得积分10
16秒前
JamesPei应助nightmare采纳,获得10
17秒前
18秒前
19秒前
十年完成签到 ,获得积分10
20秒前
wwl发布了新的文献求助10
22秒前
23秒前
默默千亦完成签到 ,获得积分10
23秒前
贾克斯发布了新的文献求助10
24秒前
撸撸大仙完成签到,获得积分20
25秒前
打我呀发布了新的文献求助10
25秒前
26秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
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 3989406
求助须知:如何正确求助?哪些是违规求助? 3531522
关于积分的说明 11254187
捐赠科研通 3270174
什么是DOI,文献DOI怎么找? 1804901
邀请新用户注册赠送积分活动 882105
科研通“疑难数据库(出版商)”最低求助积分说明 809174