Effective adsorbent for arsenic removal: core/shell structural nano zero-valent iron/manganese oxide

被引：34

作者：

Bui, Trung Huu ^{[1
]}

Kim, Choonsoo ^{[1
]}

Hong, Sung Pil ^{[1
]}

Yoon, Jeyong ^{[1
,2
]}

机构：

[1] Seoul Natl Univ, Sch Chem & Biol Engn, Coll Engn, Inst Chem Proc, Seoul 151742, South Korea

[2] Seoul Natl Univ, AIEES, Seoul 151742, South Korea

来源：

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2017年 / 24卷 / 31期

基金：

新加坡国家研究基金会;

关键词：

Arsenic removal; Nano zero-valent iron; Manganese oxide; Core/shell structure; Adsorption; SONOCHEMICAL SYNTHESIS; AQUEOUS-SOLUTIONS; ZEROVALENT IRON; DRINKING-WATER; METALLIC IRON; XPS SPECTRA; ADSORPTION; MNO2; NANOPARTICLES; GROUNDWATER;

D O I：

10.1007/s11356-017-0036-9

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Recently, nano zero-valent iron (nZVI) has emerged as an effective adsorbent for the removal of arsenic from aqueous solutions. However, its use in various applications has suffered from reactivity loss resulting in a decreased efficiency. Thus, the aim of this study was to develop an effective arsenic adsorbent as a core/shell structural nZVI/manganese oxide (or nZVI/Mn oxide) to minimize the reactivity loss of the nZVI. As the major result, the arsenic adsorption capacities of the nZVI/Mn oxide for As(V) and As(III) were approximately two and three times higher than that of the nZVI, respectively. In addition, the As(V) removal efficiency of the nZVI/Mn oxide was maintained through 4 cycles of regeneration whereas that of the nZVI was decreased significantly. The enhanced reactivity and reusability of the nZVI/Mn oxide can be successfully explained by the synergistic interaction of the nZVI core and manganese oxide shell, in which the manganese oxides participate in oxidation reactions with corroded Fe2+ and subsequently retard the release of aqueous iron providing additional surface sites for arsenic adsorption. In summary, this study reports the successful fabrication of a core/shell nZVI/Mn oxide as an effective adsorbent for the removal of arsenic from aqueous solutions.

引用

页码：24235 / 24242

页数：8

共 48 条

[1] Facile Synthesis of Graphene-supported MnO, Mn3O4, and MnO2 Nanocomposites by Controlling Gas Environment [J].

Ahn, Seokhoon ;

Kang, Sang Myeong ;

Lee, Soul-Hee ;

Park, Joon B. .

BULLETIN OF THE KOREAN CHEMICAL SOCIETY, 2014, 35 (10) :2889-2890

[2] Preparation of microporous activated carbon and its modification for arsenic removal from water [J].

Asadullah, Mohammad ;

Jahan, Israt ;

Ahmed, Mohammad Boshir ;

Adawiyah, Pasilatun ;

Malek, Nur Hanina ;

Rahman, Mohammad Sahedur .

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, 2014, 20 (03) :887-896

[3] Removal of arsenic from water by zero-valent iron [J].

Bang, S ;

Korfiatis, GP ;

Meng, XG .

JOURNAL OF HAZARDOUS MATERIALS, 2005, 121 (1-3) :61-67

[4] Chemical reactions between arsenic and zero-valent iron in water [J].

Bang, S ;

Johnson, MD ;

Korfiatis, GP ;

Meng, XG .

WATER RESEARCH, 2005, 39 (05) :763-770

[5] Montmorillonite-supported nanoscale zero-valent iron for removal of arsenic from aqueous solution: Kinetics and mechanism [J].

Bhowmick, Subhamoy ;

Chakraborty, Sudipta ;

Mondal, Priyanka ;

Van Renterghem, Wouter ;

Van den Berghe, Sven ;

Roman-Ross, Gabriela ;

Chatterjee, Debashis ;

Iglesias, Monica .

CHEMICAL ENGINEERING JOURNAL, 2014, 243 :14-23

[6] Iron-nickel bimetallic nanoparticles for reductive degradation of azo dye Orange G in aqueous solution [J].

Bokare, Alok D. ;

Chikate, Rajeev C. ;

Rode, Chandrashekhar V. ;

Paknikar, Kishore M. .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2008, 79 (03) :270-278

[7] Determining the optimum Feo ratio for sustainable granular Feo/sand water filters [J].

Bratkeu-K, B. D. ;

Olvera-Vargas, H. ;

Tchatchueng, J. B. ;

Noubactep, C. ;

Care, S. .

CHEMICAL ENGINEERING JOURNAL, 2014, 247 :265-274

[8] Characterizing the impact of MnO2 on the efficiency of Fe0-based filtration systems [J].

Btatkeu-K, B. D. ;

Olvera-Vargas, H. ;

Tchatchueng, J. B. ;

Noubactep, C. ;

Care, S. .

CHEMICAL ENGINEERING JOURNAL, 2014, 250 :416-422

[9] Removal of As(III) and As(V) by natural and synthetic metal oxides [J].

Chang, Yoon-Young ;

Lee, Seung-Mok ;

Yang, Jae-Kyu .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2009, 346 (1-3) :202-207

[10] Arsenic toxicity, health hazards and removal techniques from water: an overview [J].

Choong, Thomas S. Y. ;

Chuah, T. G. ;

Robiah, Y. ;

Koay, F. L. Gregory ;

Azni, I. .

DESALINATION, 2007, 217 (1-3) :139-166

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