Reductive removal of 2,4-dinitrotoluene and 2,4-dichlorophenol with zero-valent iron-included biochar

被引：71

作者：

Oh, Seok-Young ^{[1
]}

Seo, Yong-Deuk ^{[1
]}

Ryu, Kwang-Sun ^{[2
]}

机构：

[1] Univ Ulsan, Dept Civil & Environm Engn, 93 Daehak Ro, Ulsan 44610, South Korea

[2] Univ Ulsan, Dept Chem, Ulsan 44610, South Korea

来源：

BIORESOURCE TECHNOLOGY | 2016年 / 216卷

基金：

新加坡国家研究基金会;

关键词：

Reduction; Sorption; Fe(0)-included biochar; Electron transfer mediator; ZEROVALENT IRON; NITRO EXPLOSIVES; ELEMENTAL IRON; CONTAMINANTS; ADSORPTION; TRANSFORMATION; REMEDIATION; SORPTION; BLACK; WATER;

D O I：

10.1016/j.biortech.2016.06.061

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

In order to remediate organic contaminants in natural waters and soils, a novel zero-valent iron [Fe(0)]-included biochar was synthesized via slow pyrolysis. 2,4-Dinitrotoluene (DNT) and 2,4-dichlorophenol (DCP) were removed in water via sorption to the Fe(0)-included biochar. Compared to sorption control without Fe(0), the sorbed DNT and DCP were further transformed to reduction products by Fe(0)-included biochar. Compared to the reduction control with Fe(0), the presence of biochar promoted the reductive transformation of DNT and DCP. Increasing the pyrolysis temperature resulted in enhancing the removal of DNT and DCP, suggesting that the aromaticity of biochar may be responsible for the removal. The yields of the reduction products also indicated that unlike the direct reduction by Fe(0), different reduction pathways existed in the reduction of DNT and DCP with Fe(0)-included biochar. The results suggest that Fe(0)-included biochar is a viable option to immobilize and transform redox-sensitive organic contaminants in natural environments. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：1014 / 1021

页数：8

共 34 条

[1] Reduction of nitro aromatic compounds by zero-valent iron metal [J].

Agrawal, A ;

Tratnyek, PG .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1996, 30 (01) :153-160

[2] Treatment of 2,4-Dichlorophenol polluted soil with free and immobilized laccase [J].

Ahn, MY ;

Dec, J ;

Kim, JE ;

Bollag, JM .

JOURNAL OF ENVIRONMENTAL QUALITY, 2002, 31 (05) :1509-1515

[3] Activated carbon fibers as redox mediators for the increased reduction of nitroaromatics [J].

Amezquita-Garcia, H. J. ;

Razo-Flores, E. ;

Cervantes, F. J. ;

Rangel-Mendez, J. R. .

CARBON, 2013, 55 :276-284

[4] Chlorinated ethene reduction by cast iron: Sorption and mass transfer [J].

Burris, DR ;

Allen-King, RM ;

Manoranjan, VS ;

Campbell, TJ ;

Loraine, GA ;

Deng, BL .

JOURNAL OF ENVIRONMENTAL ENGINEERING-ASCE, 1998, 124 (10) :1012-1019

[5] Simultaneous adsorption and degradation of γ-HCH by nZVI/Cu bimetallic nanoparticles with activated carbon support [J].

Chang, Chun ;

Lian, Fei ;

Zhu, Lingyan .

ENVIRONMENTAL POLLUTION, 2011, 159 (10) :2507-2514

[6] Transitional adsorption and partition of nonpolar and polar aromatic contaminants by biochars of pine needles with different pyrolytic temperatures [J].

Chen, Baoliang ;

Zhou, Dandan ;

Zhu, Lizhong .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2008, 42 (14) :5137-5143

[7] Adsorption and Simultaneous Dechlorination of PCBs on GAC/Fe/Pd: Mechanistic Aspects and Reactive Capping Barrier Concept [J].

Choi, Hyeok ;

Agarwal, Shirish ;

Al-Abed, Souhail R. .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2009, 43 (02) :488-493

[8] Synthesis of the magnetic biochar composites for use as an adsorbent for the removal of pentachlorophenol from the effluent [J].

Devi, Parmila ;

Saroha, Anil K. .

BIORESOURCE TECHNOLOGY, 2014, 169 :525-531

[9] Kinetics of nitroaromatic reduction on granular iron in recirculating batch experiments [J].

Devlin, JF ;

Klausen, J ;

Schwarzenbach, RP .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1998, 32 (13) :1941-1947

[10] Adsorption of anionic and cationic dyes on activated carbons with different surface chemistries [J].

Faria, PCC ;

Orfao, JJM ;

Pereira, MFR .

WATER RESEARCH, 2004, 38 (08) :2043-2052

← 1 2 3 4 →