Selective removal of phosphate by dual Zr and La hydroxide/cellulose-based bio-composites

被引：70

作者：

Du, Weiyan ^{[1
]}

Li, Yaru ^{[1
]}

Xu, Xing ^{[1
]}

Shang, Yanan ^{[1
]}

Gao, Baoyu ^{[1
]}

Yue, Qinyan ^{[1
]}

机构：

[1] Shandong Univ, Sch Environm Sci & Engn, Shandong Key Lab Water Pollut Control & Resource, Jinan 250100, Shandong, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2019年 / 533卷

基金：

中国国家自然科学基金;

关键词：

Zr hydroxides; La hydroxides; Phosphate; Biomaterials; Composites; HIGHLY EFFICIENT; AQUEOUS-SOLUTION; WHEAT-STRAW; WASTE-WATER; ADSORPTION; OXIDE; RECOVERY; FLUORIDE; ADSORBENT; KINETICS;

D O I：

10.1016/j.jcis.2018.09.002

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：

Bimetallic oxides nanocomposites always exhibited the better phosphate capacities than those monometallic oxides samples. Herein, the high carbohydrate-content biomaterials, shaddock peels (SP), were used as the bio-host for supporting the bimetallic oxides, zirconium (Zr) and lanthanum (La) hydroxides, forming the SP-Zr-La composites. Phosphate adsorption properties as well as stability of the novel composites were evaluated. The SP-Zr-La composites indicated that some rod-like or amorphous nanoparticles with sizes of 20-150 nm were anchored inside the SP, which exerted more available interface interactions toward the adsorbed ions. The Zr-La species were pH-sensitive and adsorption capacity of phosphate by SP-Zr-La was increased with the rise in temperature. As the molar ratio of accompanying ions/phosphate was increased from 0 to 10 times, the SP-Zr-La was observed with the adsorption loss of 27.2-36.7%. Whereas the adsorption loss of cationic SP (grafted with quaternary ammonium groups) was calculated up to 86.2-91.6%; this indicated the more feasibility of SP-Zr-La in real applications. In addition, the stability of impregnated Zr and La species in SP-Zr-La was greatly improved by the bio-carrier through the "shielding effect" in a low HA surrounding. (C) 2018 Elsevier Inc. All rights reserved.

引用

页码：692 / 699

页数：8

共 45 条

[1] Removal of fluoride from drinking water using highly efficient nano-adsorbent, Al(III)-Fe(III)-La(III) trimetallic oxide prepared by chemical route [J].