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1. Experimental and theoretical aspects of biochar-supported nanoscale zero-valent iron activating H2O2 for ciprofloxacin removal from aqueous solution

Author:
Mao, Qiming; Zhou, Yaoyu; Yang, Yuan; Zhang, Jiachao; Liang, Lifen; Wang, Hailong; Luo, Shuang; Luo, Lin; Jeyakumar, Paramsothy; Ok, Yong Sik; Rizwan, Muhammad
Source:
Journal of hazardous materials 2019 v.380 pp. 120848
ISSN:
0304-3894
Subject:
antibiotics; aqueous solutions; biochar; ciprofloxacin; hydrogen; hydrogen peroxide; hydroxyl radicals; iron; oxidation; pH; temperature; water treatment
Abstract:
... Ciprofloxacin has been frequently detected in water environment, and its removal has become a significant public concern. Biochar-supported nanoscale zero-valent iron (BC/nZVI) to activate hydrogen peroxide (H2O2) has many advantages on promoting the removal of organic contaminants. In this paper, the BC/nZVI activating H2O2 degradation of ciprofloxacin was systematically investigated by experimen ...
DOI:
10.1016/j.jhazmat.2019.120848

2. Effect of solar photo-Fenton process in raceway pond reactors at neutral pH on antibiotic resistance determinants in secondary treated urban wastewater

Author:
Fiorentino, Antonino; Esteban, Belén; Garrido-Cardenas, José Antonio; Kowalska, Katarzyna; Rizzo, Luigi; Aguera, Ana; Pérez, José Antonio Sánchez
Source:
Journal of hazardous materials 2019 v.378 pp. 120737
ISSN:
0304-3894
Subject:
Enterococcus; Escherichia coli; antibiotic resistance; antibiotic resistance genes; cefotaxime; coliform bacteria; detection limit; hydrogen peroxide; iron; oxidation; pH; solar energy; wastewater
Abstract:
... Solar photo-Fenton process in raceway pond reactors was investigated at neutral pH as a sustainable tertiary treatment of real urban wastewater. In particular, the effect on antibiotic resistance determinants was evaluated. An effective inactivation of different wild bacterial populations was achieved considering total and cefotaxime resistant bacteria. The detection limit (1 CFU mL−1) was achieve ...
DOI:
10.1016/j.jhazmat.2019.06.014

3. Stable cuprous active sites in Cu+-graphitic carbon nitride: Structure analysis and performance in Fenton-like reactions

Author:
Ma, Jianqing; Jia, Nanzhengfang; Shen, Chensi; Liu, Weiping; Wen, Yuezhong
Source:
Journal of hazardous materials 2019 v.378 pp. 120782
ISSN:
0304-3894
Subject:
X-radiation; active sites; adsorption; carbon nitride; catalysts; copper; graphene; hydrogen peroxide; hydroxyl radicals; pH; rhodamines; singlet oxygen
Abstract:
... Cu+-based catalysts have great potential in Fenton reactions under neutral pH conditions. However, cuprous (Cu+) materials are instable in the aqueous environment. Herein, using the cheap precursors, a Cu+-graphitic carbon nitride complex with an efficient Fenton-like activity as well as relative stability was prepared. 99.2% removal of Rhodamine B with an initial concentration of 50 mg/L could be ...
DOI:
10.1016/j.jhazmat.2019.120782

4. Fluoride ion accelerating degradation of organic pollutants by Cu(II)-catalyzed Fenton-like reaction at wide pH range

Author:
Gu, Tao; Dong, Hexin; Lu, Tianliang; Han, Li; Zhan, Yuzhong
Source:
Journal of hazardous materials 2019 v.377 pp. 365-370
ISSN:
0304-3894
Subject:
copper; dissociation; dyes; fluorides; hydrogen peroxide; hydroxyl radicals; pH; pollutants; rhodamines; temperature
Abstract:
... The degradation of rhodamine B in the F−/Cu(II)/H2O2 system was studied to evaluate the accelerating effect of F− on the Cu(II)-catalyzed Fenton-like reaction. Effects of various parameters, such as F−/Cu2+ ratio, F− and Cu2+ concentrations, initial pH, temperature, H2O2 and rhodamine B concentrations, were investigated. The results confirmed that there is a strong promoting effect of F− on the Cu ...
DOI:
10.1016/j.jhazmat.2019.05.073

5. Waste-wood-derived biochar cathode and its application in electro-Fenton for sulfathiazole treatment at alkaline pH with pyrophosphate electrolyte

Author:
Deng, Fengxia; Olvera-Vargas, Hugo; Garcia-Rodriguez, Orlando; Zhu, Yingshi; Jiang, Jizhou; Qiu, Shan; Yang, Jixian
Source:
Journal of hazardous materials 2019 v.377 pp. 249-258
ISSN:
0304-3894
Subject:
biochar; boron; carbon; cathodes; electrolytes; hydrogen peroxide; oxygen; pH; pyrolysis; sulfathiazole; surface area; temperature; toxic substances; toxicity testing; waste wood
Abstract:
... For the first time, a biomass-derived porous carbon cathode (WDC) was fabricated via a facile one-step pyrolysis of recovered wood-waste without any post-treatment. The WDC along with pyrophosphate (PP) as electrolyte were used in electro-Fenton (EF) at pH 8 for sulfathiazole (STZ) treatment. The H2O2 accumulation capacity of WDC was optimized via the following parameters: pyrolysis temperature, a ...
DOI:
10.1016/j.jhazmat.2019.05.077

6. Superior performance of FeVO4@CeO2 uniform core-shell nanostructures in heterogeneous Fenton-sonophotocatalytic degradation of 4-nitrophenol

Author:
Eshaq, Gh.; Wang, Shaobin; Sun, Hongqi; Sillanpaa, Mika
Source:
Journal of hazardous materials 2019
ISSN:
0304-3894
Subject:
Fourier transform infrared spectroscopy; Raman spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; catalysts; catalytic activity; ceric oxide; dissociation; durability; energy; energy-dispersive X-ray analysis; hydrogen peroxide; irradiation; mineralization; nanorods; oxidation; p-nitrophenol; pH; scanning electron microscopy; transmission electron microscopy; ultrasonics
Abstract:
... Porous FeVO4 nanorods decorated on CeO2 nanocubes (FeVO4@CeO2) were successfully prepared via a facile hydrothermal route and tested in the degradation of 4-nitrophenol (4-NP) for enhanced heterogeneous oxidation using ultrasonic (US), ultraviolet (UV), and binary irradiation US/UV, respectively. The nanostructure of the core-shell FeVO4@CeO2 was characterised using XRD, SEM, EDS elemental mapping ...
DOI:
10.1016/j.jhazmat.2019.121059

7. Comparative studies on catalytic mechanisms for natural chalcopyrite-induced Fenton oxidation: Effect of chalcopyrite type

Author:
Huang, Xiaotao; Zhu, Tonghe; Duan, Weijian; Liang, Sheng; Li, Ge; Xiao, Wei
Source:
Journal of hazardous materials 2019
ISSN:
0304-3894
Subject:
catalysts; catalytic activity; comparative study; copper; free radicals; hydrogen peroxide; hydroxyl radicals; intermediate product; ions; iron; oxidation; pH; wastewater treatment
Abstract:
... The type of chalcopyrite plays a key role in determining its physicochemical properties. In this study, we present a systematic comparative study on the use of p- and n-type chalcopyrite (Cpy A and Cpy B, respectively) as Fenton catalysts for wastewater treatment. Experimental results showed that 60 % of AO7 removal could be achieved in 30 min at a natural pH when H2O2 was activated by Cpy A. The ...
DOI:
10.1016/j.jhazmat.2019.120998

8. Assessment of a Fenton reaction driven by insoluble tannins from pine bark in treating an emergent contaminant

Author:
Romero, Romina; Contreras, David; Sepúlveda, Mónica; Moreno, Nataly; Segura, Cristina; Melin, Victoria
Source:
Journal of hazardous materials 2019
ISSN:
0304-3894
Subject:
Pinus radiata; atrazine; bark; experimental design; hydrogen peroxide; iron; ligands; pH; phenols; quinones; tannins; toxicity
Abstract:
... Iron ligands as 1,2-dihydroxybenzenes (1,2-DHBs) have been used to increase the oxidizing ability of Fenton systems. However, these kinds of ligands become toxic quinones in the process creating an environmental problem since these compounds cannot be easily separated from a solution. To avoid this problem, in the present work, water-insoluble tannins, obtained from Pinus radiata bark, were used a ...
DOI:
10.1016/j.jhazmat.2019.120982

9. Decomplexation removal of Ni(II)-citrate complexes through heterogeneous Fenton-like process using novel CuO-CeO2-CoOx composite nanocatalyst

Author:
Liang, Huiyu; Xiao, Ke; Wei, Liyan; Yang, Bo; Yu, Gang; Deng, Shubo; Duan, Huabo; Zhu, Caizhen; Li, Juying; Zhang, Junmin
Source:
Journal of hazardous materials 2019 v.374 pp. 167-176
ISSN:
0304-3894
Subject:
X-ray diffraction; X-ray photoelectron spectroscopy; catalysts; catalytic activity; coprecipitation; hydrogen peroxide; nanomaterials; nickel; pH; sludge; temperature; transmission electron microscopy; wastewater
Abstract:
... A novel CuO-CeO2-CoOx nanocatalyst was prepared for heterogeneous Fenton-like reaction to break the Ni2+-chelate into free Ni2+ in electroless nickel plating wastewater, followed by separation of Ni2+ in an insoluble form. The composite nanocatalysts prepared by co-precipitation method were characterized by XRD, TEM, and XPS, et al. Its catalytic activity as Fenton-like reagent was evaluated by th ...
DOI:
10.1016/j.jhazmat.2019.04.031

10. Highly pure MgO2 nanoparticles as robust solid oxidant for enhanced Fenton-like degradation of organic contaminants

Author:
Wu, Doudou; Bai, Yun; Wang, Wei; Xia, Hongliang; Tan, Fatang; Zhang, Shenghua; Su, Bin; Wang, Xinyun; Qiao, Xueliang; Wong, Po Keung
Source:
Journal of hazardous materials 2019 v.374 pp. 319-328
ISSN:
0304-3894
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; hydrogen peroxide; hydroxyl radicals; iron; liquids; magnesium; methylene blue; nanoparticles; oxidants; oxygen; pH; scanning electron microscopy; toxicity; transmission electron microscopy
Abstract:
... In typical Fenton/Fenton-like reactions, H2O2 was usually used as an oxidant to degrade organic contaminants. However, liquid H2O2 is unstable, easy to decompose and has high biological toxicity especially at high concentration. Herein, highly pure magnesium peroxide (MgO2) nanoparticles were first synthesized and used instead of H2O2 to degrade organic dyes. The structure and morphology of as-pre ...
DOI:
10.1016/j.jhazmat.2019.04.058

11. Mineralization of cefoperazone in acid medium by the microwave discharge electrodeless lamp irradiated photoelectro-Fenton using a RuO2/Ti or boron-doped diamond anode

Author:
Wen, Zhenjun; Wang, Aimin; Zhang, Yanyu; Ren, Songyu; Tian, Xiujun; Li, Jiuyi
Source:
Journal of hazardous materials 2019 v.374 pp. 186-194
ISSN:
0304-3894
Subject:
activated carbon; ammonium; anodes; carbon fibers; carboxylic acids; cathodes; cefoperazone; electrochemistry; hydrogen peroxide; hydroxyl radicals; iron; mineralization; nitrates; oxidation; pH
Abstract:
... The mineralization of 125 mL of 50–300 mg L−1 cefoperazone (CFPZ) has been comparatively studied by electrochemical advanced oxidation processes (EAOPs) like anodic oxidation (AO), electro-Fenton (EF) and photoelectro-Fenton (PEF) with a RuO2/Ti or boron-doped diamond (BDD) anode and an activated carbon fiber (ACF) cathode. A microwave discharge electrodeless lamp (MDEL) was used as the UV source ...
DOI:
10.1016/j.jhazmat.2019.03.124

12. Enhanced arsenite removal from water by radially porous Fe-chitosan beads: Adsorption and H2O2 catalytic oxidation

Author:
Wei, Yuanfeng; Yu, Xingwen; Liu, Chengbin; Ma, Jianhong; Wei, Shudan; Chen, Tao; Yin, Kai; Liu, Hui; Luo, Shenglian
Source:
Journal of hazardous materials 2019 v.373 pp. 97-105
ISSN:
0304-3894
Subject:
acid tolerance; adsorbents; adsorption; arsenic; arsenites; carbonates; chitosan; drinking water; groundwater; humic acids; hydrogen peroxide; iron; oxidation; pH; phosphates; silicates; sulfates
Abstract:
... Although Fe-chitosan adsorbents are attractive for removing arsenite from water, the practical applications of these granular adsorbents are mainly limited by slow adsorption kinetics. In this study, radially porous Fe-chitosan beads (P/Fe-CB) were prepared using freeze-casting technique. The P/Fe-CB particles possess radially aligned micron-sized tunnels from the surface to the inside as well as ...
DOI:
10.1016/j.jhazmat.2019.03.070

13. EDDS as complexing agent for enhancing solar advanced oxidation processes in natural water: Effect of iron species and different oxidants

Author:
Miralles-Cuevas, S.; Oller, I.; Ruíz-Delgado, A.; Cabrera-Reina, A.; Cornejo-Ponce, L.; Malato, S.
Source:
Journal of hazardous materials 2019 v.372 pp. 129-136
ISSN:
0304-3894
Subject:
antipyrine; caffeine; ciprofloxacin; hydrogen peroxide; iron; oxidants; oxidation; pH; solar energy; solar radiation; sulfamethoxazole
Abstract:
... The main purpose of this pilot plant study was to compare degradation of five microcontaminants (MCs) (antipyrine, carbamazepine, caffeine, ciprofloxacin and sulfamethoxazole at 100 μg/L) by solar photo-Fenton mediated by EDDS and solar/Fe:EDDS/S2O82−. The effects of the Fe:EDDS ratio (1:1 and 1:2), initial iron species (Fe(II) or Fe(III) at 0.1 mM) and oxidizing agent (S2O82− or H2O2 at 0.25–1.5  ...
DOI:
10.1016/j.jhazmat.2018.03.018

14. Photo-Fenton degradation of a herbicide (2,4-D) in groundwater for conditions of natural pH and presence of inorganic anions

Author:
Conte, Leandro O.; Schenone, Agustina V.; Giménez, Bárbara N.; Alfano, Orlando M.
Source:
Journal of hazardous materials 2019 v.372 pp. 113-120
ISSN:
0304-3894
Subject:
2,4-D; anions; bicarbonates; chlorides; groundwater; hydrogen peroxide; iron; kinetics; nitrates; oxalates; pH; photochemistry; prediction; regression analysis; sulfates
Abstract:
... The effects of four inorganic anions (Cl−, SO42−, HCO3−, NO3−) usually present in groundwater were investigated on the photo-Fenton degradation of 2,4-dichlorophenoxyacetic acid (2,4-D). A kinetic model derived from a reaction sequence is proposed using the ferrioxalate complex as iron source at pH close to natural conditions (pH = 5). It was demonstrated that oxalate not only maintained iron in s ...
DOI:
10.1016/j.jhazmat.2018.04.013

15. Photo-Fenton treatment of saccharin in a solar pilot compound parabolic collector: Use of olive mill wastewater as iron chelating agent, preliminary results

Author:
Davididou, K.; Chatzisymeon, E.; Perez-Estrada, L.; Oller, I.; Malato, S.
Source:
Journal of hazardous materials 2019 v.372 pp. 137-144
ISSN:
0304-3894
Subject:
Vibrio fischeri; acidification; bacteria; bioluminescence; chelating agents; chronic toxicity; hydrogen peroxide; iron; liquid chromatography; monitoring; olive mill wastewater; oxidation; pH; saccharin
Abstract:
... The aim of this work was to investigate the treatment of the artificial sweetener saccharin (SAC) in a solar compound parabolic collector pilot plant by means of the photo-Fenton process at pH 2.8. Olive mill wastewater (OMW) was used as iron chelating agent to avoid acidification of water at pH 2.8. For comparative purposes, Ethylenediamine-N, N-disuccinic acid (EDDS), a well-studied iron chelato ...
DOI:
10.1016/j.jhazmat.2018.03.016

16. Core-shell structured Fe3O4@GO@MIL-100(Fe) magnetic nanoparticles as heterogeneous photo-Fenton catalyst for 2,4-dichlorophenol degradation under visible light

Author:
Gong, Qingjiao; Liu, Yun; Dang, Zhi
Source:
Journal of hazardous materials 2019 v.371 pp. 677-686
ISSN:
0304-3894
Subject:
2,4-dichlorophenol; Raman spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; catalysts; catalytic activity; electric current; electrons; hydrogen peroxide; hysteresis; iron; iron oxides; irradiation; magnetic fields; nanoparticles; pH; photoluminescence; scanning electron microscopy; transmission electron microscopy
Abstract:
... A novel core-shell structured Fe3O4@GO@MIL-100(Fe) magnetic catalyst was successfully synthesized and used as heterogeneous photo-Fenton catalyst for 2,4-dichlorophenl (2,4-DCP) degradation. The catalyst was fully characterized by X-ray diffraction pattern (XRD), Raman spectroscopy, Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), ...
DOI:
10.1016/j.jhazmat.2019.03.019

17. Degradation process regulation of waste LCD panel to ensure the remain of indium in solid phase by hydrothermal reaction

Author:
Cao, Yue; Li, Feng; Li, Guangming; Huang, Juwen; Zhu, Haochen; He, Wenzhi
Source:
Journal of hazardous materials 2019 v.369 pp. 125-131
ISSN:
0304-3894
Subject:
glass; hydrogen peroxide; indium; leaching; liquids; pH; product quality; recycling; risk; temperature; wastes
Abstract:
... The environmental risks and recycling potential of organic materials and indium of waste LCD panel has produced commercial value. It has been found that hydrothermal reaction can achieve an efficient and clean degradation of organic materials in a closed environment. However, as the degradation process occurs, the glass substrate is gradually exposed to the hydrothermal environment. Whether the me ...
DOI:
10.1016/j.jhazmat.2019.02.033

18. In-situ green assembly of spherical Mn-based metal-organic composites by ion exchange for efficient electrochemical oxidation of organic pollutant

Author:
Xu, Zehai; Qin, Lei; Zhang, Yufan; Li, Xiong; Nan, Jilin; Guo, Xinwen; Zhang, Guoliang
Source:
Journal of hazardous materials 2019 v.369 pp. 299-308
ISSN:
0304-3894
Subject:
active sites; catalysts; decolorization; electrochemistry; electron transfer; hydrogen peroxide; industrial applications; ion exchange; ions; methylene blue; moieties; oxidation; pH; pollutants; resins; synergism; wastes
Abstract:
... In this study, we develop a facile ion exchange strategy for in-situ assembly of novel spherical metal-organic composites on a large scale. The functional groups (-NH2, -COOH and -SO3H) on chelating and exchange resins had significant effects on improving uniform distribution of metallic sites and metal-support interaction. Without any addition of H2O2, Mn-based metal-organic composites realized t ...
DOI:
10.1016/j.jhazmat.2019.02.050

19. Fabrication of a novel polyvinylidene fluoride membrane via binding SiO2 nanoparticles and a copper ferrocyanide layer onto a membrane surface for selective removal of cesium

Author:
Ding, Shiyuan; Zhang, Lilan; Li, Yang; Hou, Li-an
Source:
Journal of hazardous materials 2019 v.368 pp. 292-299
ISSN:
0304-3894
Subject:
adsorption; calcium; cations; cesium; copper; copper nanoparticles; electrostatic interactions; filtration; humic acids; hydrogen peroxide; magnesium; pH; potassium; silica; sodium; sonication; surface water; thermoplastics; wastewater treatment
Abstract:
... A novel polyvinylidene fluoride (PVDF) membrane was fabricated through chemical binding SiO2 nanoparticles (NPs) and copper ferrocyanide (CuFC) layers onto a membrane surface simultaneously to improve the removal efficiency of Cs. The results indicated that the SiO2 NPs were strongly deposited onto the membrane surface, and the CuFC layer was firmly attached on the surface of SiO2 NPs and the memb ...
DOI:
10.1016/j.jhazmat.2019.01.065

20. Simultaneous removal of aniline, antimony and chromium by ZVI coupled with H2O2: Implication for textile wastewater treatment

Author:
Xue, Gang; Wang, Qi; Qian, Yajie; Gao, Pin; Su, Yiming; Liu, Zhenhong; Chen, Hong; Li, Xiang; Chen, Jiabin
Source:
Journal of hazardous materials 2019 v.368 pp. 840-848
ISSN:
0304-3894
Subject:
X-ray photoelectron spectroscopy; adsorption; aniline; antimony; chromium; coprecipitation; corrosion; hydrogen peroxide; iron; pH; textile mill effluents; wastewater treatment
Abstract:
... Aniline, antimony (Sb) and chromium (Cr) are typical and regulated co-contaminants in textile wastewater, but their removal was often investigated individually. In this work, simultaneous removal of aniline, Sb and Cr by ZVI coupled with H2O2 was studied. With the dosage of 0.5 g L−1 ZVI and 2 mM H2O2, aniline, Sb and Cr can be removed completely at pH 3. Experiment with iso-propanol as the radica ...
DOI:
10.1016/j.jhazmat.2019.02.009