An innovative hybrid biosorbent composed of nano ZnO and marine macro algae Jania rubens embedded in an alginate/PVA matrix: insights into Pb2+ removal in water

被引：3

作者：

Kumar, Kadimpati Kishore ^{[1
,3
]}

Sujatha, Sanneboina ^{[2
]}

Skarka, Wojciech ^{[4
]}

Monfort, Olivier ^{[5
]}

机构：

[1] Osmania Univ, Mallareddy Coll Pharm, Dept Pharmaceut Biotechnol, Secunderabad 500100, Telangana, India

[2] JNT Univ, Narayana Pharm Coll, Dept Pharmaceut, Nellore 524002, Andhra Pradesh, India

[3] Silesian Tech Univ, Fac Power & Environm Engn, Dept Environm Biotechnol, Akad 2, PL-44100 Gliwice, Poland

[4] Silesian Tech Univ, Fac Mech Engn, Dept Fundamental Machine Design, Konarskiego 18A, PL-44100 Gliwice, Poland

[5] Comenius Univ, Fac Nat Sci, Dept Inorgan Chem, Ilkovicova 6, Bratislava 84215, Slovakia

来源：

NEW JOURNAL OF CHEMISTRY | 2022年 / 47卷 / 01期

关键词：

IRON-OXIDE NANOPARTICLES; HEAVY-METAL IONS; AQUEOUS-SOLUTION; PB(II); BIOSORPTION; LEAD; IMMOBILIZATION; OPTIMIZATION; CELLULOSE; KINETICS;

D O I：

10.1039/d2nj04896e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Nanoparticles of zinc oxide (ZnO) combined with a Jania rubens (JR) biosorbent have been embedded in a sodium alginate (SA)-polyvinyl alcohol (PVA) matrix. This hybrid biosorbent was characterized by FTIR, and the presence of functional groups involved in the adsorption of Pb2+ was revealed. SEM/EDX analyses have shown that the hybrid biosorbent exhibited porous microstructures which are decorated with ZnO nanoparticles (hydrodynamic size of 68 +/- 2 nm). The removal of Pb2+ from aqueous medium was thoroughly investigated. The adsorption capacity has been measured at q(e) = 39.1 mg g(-1) at pH = 5 and T = 303 K with the concentration of biosorbent and Pb2+ at 2.0 g L-1 and 100 mg L-1, respectively. The Freundlich and Langmuir isotherms have been used to model the adsorption process, from which the maximum adsorption capacity (q(m)) of the hybrid biosorbent was calculated to be 111 mg g(-1). The adsorption kinetics are represented by a pseudo-second order model. In addition, the hybrid biosordent was regenerated and reused for four cycles for the removal of Pb2+.

引用

页码：373 / 383

页数：11