S-NZVI/PS凝胶反应带修复硝基苯污染地下水

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Abstract Sulfidated-nanoscale zerovalent iron (S-NZVI) was prepared by pre-sulfide synthesis to study the degradation efficiency of nitrobenzene by S-NZVI and persulfate (PS). The degradation mechanism of reaction was investigated by detecting the change of iron ion concentration, TOC concentration and characterizing S-NZVI before and after the reaction. The S-NZVI/PS reaction zoon was established by injecting S-NZVI and gel which nano-silica solution was chosen as the binder and PS as the active components, to study the effect of in-situ remediation on simulated nitrobenzene contaminated groundwater. S-NZVI could effectively remove NB and generate a large amount of aniline (AN). The Fe²⁺ formed by PS oxidized S-NZVI and PS composition activate persulfate, which had a good degradation and mineralization effect on AN. When the concentration of NB was 100mg/L, the dosage of S-NZVI and PS was 0.5g/L and 2.5g/L respectively, the removal rate of NB was 91%, the effluent concentration of AN was 1.96mg/L, and the removal rate of TOC was 64.09%. The main iron oxidation products of S-NZVI after the reaction were Fe₃O₄ and FeO(OH). The results of reaction zone showed that the S-NZVI/PS reaction zone could effectively remove NB from groundwater and effectively remove AN produced by NB reduction. When the NB influent concentration was 100mg/L, the flow rate was 0.4mL, 1200mg/L 200mL of S-NZVI and 4.8g PS gel with 30% silica and12.5% PS was injected, the removal rate of AN was up to 97.6%and the cumulative removal rate of NB equivalent was 83.7%, within 7d.

Key words： sulfidated-nanoscale zerovalent iron persulfate nitrobenzene groundwater in-site remediation

Received: 21 February 2020

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X523

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	Articles by authors
	ZHU Ying-yi
	YE Qian
	WANG Ming-xin
	ZHANG Jin-yong
	HAN Ying

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ZHU Ying-yi,YE Qian,WANG Ming-xin等. Remediation of nitrobenzene contaminated groundwater by S-NZVI and persulfate gel reaction zone[J]. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(10): 4411-4420.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2020/V40/I10/4411

[1]	Mu Y, Rozendal R A, Rabaey K, et al. Nitrobenzene removal in bioelectrochemical systems[J]. Environmental Science & Technology, 2009,43(22):8690-8695.
[2]	Yin W, Wu J, Huang W, et al. Enhanced nitrobenzene removal and column longevity by coupled abiotic and biotic processes in zero-valent iron column[J]. Chemical Engineering Journal, 2015,259(1):417-423.
[3]	Haigler B E, Spain J C. Biotransformation of nitrobenzene by bacteria containing toluene degradative pathways[J]. Applied and Environmental Microbiology, 1991,57(11):3156-3162.
[4]	Zhang Y, Zhang K, Dai C, et al. Performance and mechanism of pyrite for nitrobenzene removal in aqueous solution[J]. Chemical Engineering Science, 2014,111(5):135-141.
[5]	Tang J, Tang L, Feng H, et al. pH-Dependent degradation of p-nitrophenol by sulfidated nanoscale zerovalent iron under aerobic or anoxic conditions[J]. Journal of Hazardous Materials, 2016,320(12):581-590.
[6]	杨春维,桂雯雯,张书豪,等.电辅助Fe2+活化过硫酸盐法降解水中苯胺[J]. 环境科学与技术, 2017,40(4):171-175. Yang C W, Gui W W, Zhang S H, et al. Degradation of aniline using E-Fe-PDS process in internal circulation batch reactor[J]. Environmental Science and Technology, 2017,40(4):171-175.
[7]	Zhu S, Li X, Kang J, et al. Persulfate activation on crystallographic manganese oxides:Mechanism of singlet oxygen evolution for nonradical selective degradation of aqueous contaminants.[J]. Environmental Science & Technology, 2019,53(1):307-315.
[8]	Gao Y Q, Gao N Y, Deng Y, et al. Ultraviolet (UV) light-activated persulfate oxidation of sulfamethazine in water[J]. Chemical Engineering Journal, 2012,195(6):248-253.
[9]	Weng C, Tsai K. Ultrasound and heat enhanced persulfate oxidation activated with Fe0aggregate for the decolorization of C.I. Direct Red 23[J]. Ultrasonics Sonochemistry, 2016,29(3):8-11.
[10]	O'Connor D, Hou D, Ok Y S, et al. Sustainable in situ remediation of recalcitrant organic pollutants in groundwater with controlled release materials:A review[J]. Journal of Controlled Release, 2018,283(8):200-213.
[11]	Kambhu A, Comfort S, Chokejaroenrat C, et al. Developing slow-release persulfate candles to treat BTEX contaminated groundwater[J]. Chemosphere, 2012,89(6):656-664.
[12]	Liang S H, Chen K F, Wu C S, et al. Development of KMnO4-releasing composites for in situ chemical oxidation of TCE-contaminated groundwater[J]. Water Research, 2014,54(4):149-158.
[13]	朱颖一,王城晨,王明新,等.硫化纳米铁反应带修复硝基苯污染地下水[J]. 中国环境科学, 2020,40(2):670-680. Zhu Y Y, Wang C C, Wang M X, et al. Remediation of nitrobenzene contaminated groundwater by S-NZVI reaction zone[J]. China Environment Science, 2020,40(2):670-680.
[14]	Tian H F, Liang Y, Yang D M, et al. Characteristics of PVP-stabilised NZVI and application to dechlorination of soil-sorbed TCE with ionic surfactant[J]. Chemosphere, 2020,239(1):124807-124815.
[15]	洪梅,韩旭,王蔷,等.硫化纳米铁对模拟地下水中Cr(Ⅵ)的去除效果及影响因素[J]. 吉林大学学报(地球科学版), 2018,48(6):215-224. Hong M, Han X, Wang Q, et al. Removal effect and influencing factors of Cr(Ⅵ) in simulated groundwater by sulfidated nanoscale zerovalent iron[J]. Journal of Jilin University (Geoscience Edition), 2018,48(6):215-224.
[16]	Chen W S, Huang C P. Mineralization of aniline in aqueous solution by electro-activated persulfate oxidation enhanced with ultrasound[J]. Chemical Engineering Journal, 2015,266(4):279-288.
[17]	Han Y, Yan W. Reductive dechlorination of trichloroethene by zero-valent iron nanoparticles:Reactivity enhancement through sulfidation treatment[J]. Environmental Science & Technology, 2016, 50(23):12992-13001.
[18]	Kim E J, Kim J H, Azad A M, et al. Facile Synthesis and characterization of Fe/FeS nanoparticles for environmental applications[J]. ACS Applied Materials & Interfaces, 2011,3(5):1457-1462.
[19]	Li D, Mao Z, Zhong Y, et al. Reductive transformation of tetrabromobisphenol A by sulfidated nano zerovalent iron[J]. Water Research, 2016,103(10):1-9.
[20]	Lu H, Dong J, Zhang M, et al. SiO2-coated zero-valent iron nanocomposites for aqueous nitrobenzene reduction in groundwater:Performance, reduction mechanism and the effects of hydrogeochemical constituents[J]. Colloids and Surfaces A:Physicochemical and Engineering Aspects, 2018,558(2):271-279.
[21]	韩东晖,李瑛,李开明,等.UV强化草酸络合Fe3+活化过硫酸盐氧化降解苯胺[J]. 环境科学, 2018,39(9):4257-4264. Han D H, Li Y, Li K M, et al. Enhanced degradation of aniline by PS oxidation in the presence of UV and ferric oxalate[J]. Environmental Sciences, 2018,39(9):4257-4264.
[22]	Hussain I, Li M Y, Zhang Y Q, et al. Insights into the mechanism of persulfate activation with nZVI/BC nanocomposite for the degradation of nonylphenol[J]. Chemical Engineering Journal, 2017,311(3):163-172.
[23]	Yang Z, Ma X, Shan C, et al. Enhanced nitrobenzene reduction by zero valent iron pretreated with H2O2/HCl[J]. Chemosphere, 2018,197(4):1-8.
[24]	陈晓旸,薛智勇,吴丹,等.基于硫酸自由基的高级氧化技术及其在水处理中的应用[J]. 水处理技术, 2009,35(5):16-20. Chen X Y, Xue Z Y, Wu D, et al. Advanced oxidation based on sulfate radical and its application in water treatment[J]. Water Treatment, 2009,35(5):16-20
[25]	Xie X F, Zhang Y Q, Huang W L, et al. Degradation kinetics and mechanism of aniline by heat-assisted persulfate oxidation[J]. Journal of Environmental Sciences, 2012,(5):43-48.
[26]	Pouran S, Shima A, Rahim R, et al. Review on the main advances in photo-Fenton oxidation system for recalcitrant wastewaters[J]. Journal of Industrial and Engineering Chemistry, 2015,21(1):53-69.
[27]	Gong Y, Gai L, Tang J, et al. Reduction of Cr(VI) in simulated groundwater by FeS-coated iron magnetic nanoparticles[J]. Science of the Total Environment, 2017,595(10):743-751.
[28]	Rajajayavel S R C, Ghoshal S. Enhanced reductive dechlorination of trichloroethylene by sulfidated nanoscale zerovalent iron[J]. Water Research, 2015,78(7):144-153.
[29]	Rongbing F, Yingpin Y, Zhen X, et al. The removal of chromium (VI) and lead (II) from groundwater using sepiolite-supported nanoscale zero-valent iron (S-NZVI)[J]. Chemosphere, 2015,138(11):726-734.
[30]	王天一.高锰酸钾凝胶缓释剂的制备及去除三氯乙烯的研究[D]. 厦门:华侨大学, 2017. Wang T Y. Preparation of slow release permanganate gel for remediation of TCE[D]. Xiamen:Huanqiao University, 2017.
[31]	Lee E S, Gupta N. Development and characterization of colloidal silica-based slow-release permanganate gel (SRP-G):Laboratory investigations[J]. Chemosphere, 2014,109(8):195-201.
[32]	Zhang Y, Xia K, Liu X, et al. Synthesis of cationic-modified silica gel and its adsorption properties for anionic dyes[J]. Journal of the Taiwan Institute of Chemical Engineers, 2019,10209):1-8.
[33]	朱峥嵘,王明新,张金永,等.Fe(VI)/CaO2双氧化体系降解水环境中的DMP[J]. 中国环境科学, 2019,39(7):2838-2846. Zhu Z R, Wang M X, Zhang J Y, at el. Degradation performance of dimethyl phthalate from aqueous environment by dual oxidant of ferrate/calcium peroxide[J]. China Environment Science, 2019,39(7):2838-2846.