An eco-friendly chitosan-diethylaminoethyl cellulose composite: In-depth analysis of lead (II) and arsenic(V) decontamination from water with molecular perspectives

被引：26

作者：

Majdoubi, Hicham ^{[1
]}

Billah, Rachid E. L. Kaim ^{[2
]}

Islam, Md. Aminul ^{[3
,4
]}

Nazal, Mazen K. ^{[3
]}

Shekhawat, Anita ^{[5
]}

Alrashdi, Awad A. ^{[6
]}

Lopez-Maldonado, Eduardo Alberto ^{[7
]}

Soulaimani, Aziz ^{[8
,9
]}

Tamraoui, Youssef ^{[1
]}

Jugade, Ravin ^{[5
]}

Lgaz, Hassane ^{[10
]}

机构：

[1] Mohamed VI Polytech Univ, Mat Sci Energy & Nanoengn Dept, Benguerir, Morocco

[2] Univ Chouaib Doukkali, Fac Sci, Dept Chem, Lab Coordinat & Analyt Chem, Ave Jabran Khalil Jabran BP 299-24000, El Jadida 24000, Morocco

[3] King Fahd Univ Petr & Minerals KFUPM, Res Inst, Appl Res Ctr Environm & Marine Studies ARCEMS, Dhahran 31261, Saudi Arabia

[4] Ahsanullah Univ Sci & Technol AUST, Fac Engn, Dept Arts & Sci, Div Chem, 141 & 142 Love Rd, Dhaka 1208, Bangladesh

[5] RTM Nagpur Univ, Dept Chem, Nagpur 440033, India

[6] Umm Al Oa Univ, Al Qunfudah Univ Coll, Chem Dept, Mecca, Saudi Arabia

[7] Autonomous Univ Baja, Fac Chem Sci & Engn, Tijuana 22390, Baja California, Mexico

[8] Hassan II Univ, Fac Sci Ben MSik, Lab Engn & Mat LIMAT, Casablanca, Morocco

[9] Mohammed VI Polytech Univ UM6P, Agr Innovat & Technol Transfer Ctr AITTC, Ben Guerir 43150, Morocco

[10] Hanyang Univ ERICA, Innovat Durable Bldg & Infrastructure Res Ctr, Ctr Creat Convergence Educ, 55 Hanyangdaehak Ro, Ansan 15588, Gyeonggi, South Korea

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2023年 / 387卷

关键词：

Chitosan; Diethylaminoethyl cellulose; Lead(II); Arsenic(V); Adsorption; Molecular Dynamic Simulation; METAL-ION; REMOVAL; PB(II); ADSORPTION; CD(II); ADSORBENT; KINETICS; CU(II);

D O I：

10.1016/j.molliq.2023.122680

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Water pollution from heavy metal ions, such as lead (II) and arsenic (V), is a widespread problem that has spurred researchers to look for efficient, environmentally acceptable treatment methods. In this context, the present study explores the potentiality of a novel, low-cost biosorbent material for the efficient removal of these toxic contaminants. A chitosan crosslinked@diethylaminoethyl cellulose (Cs@DEAE-C) composite was synthe-sized by crosslinking chitosan and diethylaminoethyl cellulose (DEAE-C) and employed to adsorb Pb(II) and As (V) from water. The monolayer adsorption capacity was found to be 218.71 mg/g for Pb(II) and 41.98 mg/g for As(V), respectively while the uptake process involved chemisorption. The adsorption capability of Cs@DEAE-C for As(V) and Pb(II) was decreased when phosphate and nitrate ions were present. Desorption studies demon-strated that Cs@DEAE-C effectively removed As(V) and Pb(II) for up to five adsorption-desorption cycles. Uncross-linked carbonyl (C = O) and hydroxyl (-OH) groups were found to be the main adsorptive sites for Pb(II) uptake, whereas uncross-linked hydroxyl (-OH) and -NH2 groups were found to be crucial for As(V) absorption. The self-diffusion coefficient values from molecular dynamics (MD) simulation revealed that electrostatic in-teractions hinder the mobility of metal ions limiting their diffusion ability. This study highlights the efficiency of the low-cost chitosan composite for contaminant removal and suggests its potential applicability in treating real wastewater for other pollutants. Further research could focus on optimizing the synthesis process and exploring the composite's efficacy for additional contaminants.

引用

页数：15