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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. The impact of wastewater matrix on the degradation of pharmaceutically active compounds by oxidation processes including ultraviolet radiation and sulfate radicals

Author:
Sbardella, L.; Velo-Gala, I.; Comas, J.; Rodríguez-Roda Layret, I.; Fenu, A.; Gernjak, W.
Source:
Journal of hazardous materials 2019 v.380 pp. 120869
ISSN:
0304-3894
Subject:
active ingredients; anions; antioxidant activity; bicarbonates; exposure duration; free radicals; mercury; nitrates; organic matter; oxidants; oxidation; pH; sulfates; ultraviolet radiation; wastewater
Abstract:
... Ultraviolet radiation (UV)-activated peroxydisulfate (PDS) and peroxymonosulfate (PMS) advanced oxidation processes were examined for their capacity to remove nine pharmaceutically active compounds (PhACs) from secondary effluent. The effect of operational parameters (initial oxidant concentration, UV exposure time, pH, common coexisting anions and effluent organic matter (EfOM)) on UV/PDS and UV/ ...
DOI:
10.1016/j.jhazmat.2019.120869

3. Combined fungal and photo-oxidative Fenton processes for the treatment of wood-laminate industrial waste effluent

Author:
Heinz, Otto Lucas; Cunha, Mário A.A.; Amorim, Jéssica S.; Barbosa-Dekker, Aneli M.; Dekker, Robert F.H.; Barreto-Rodrigues, Marcio
Source:
Journal of hazardous materials 2019 v.379 pp. 120790
ISSN:
0304-3894
Subject:
Escherichia coli; Pleurotus ostreatus; ammonium nitrate; bioassays; biochemical oxygen demand; bioreactors; carbon; chemical oxygen demand; color; ecotoxicology; effluents; fermentation; fungi; industrial wastes; industry; models; nitrogen; oxidation; oxygen; pH; phenols; remediation; sucrose
Abstract:
... The present study reports on the remediation of an effluent from the wood-laminate industry using Pleurotus ostreatus EB 016 in combination with photo-Fenton oxidation. Fermentation of the effluent with P. ostreatus EB-016 was carried out in agitated flasks to evaluate the influence of pH, and concentrations of carbon and nitrogen sources by a multivariate approach. Subsequently, bioassays was con ...
DOI:
10.1016/j.jhazmat.2019.120790

4. Mechanisms of bisulfite/MnO2-accelerated transformation of methyl parathion

Author:
Zhang, Caixiang; Tang, Mi; Wang, Jianwei; Liao, Xiaoping; Wang, Yanxin; Huang, Changsheng
Source:
Journal of hazardous materials 2019 v.379 pp. 120756
ISSN:
0304-3894
Subject:
bisulfites; esters; hydrolysis; manganese; manganese dioxide; organometallic compounds; oxidation; oxygen; pH; parathion-methyl; pollution; soil water; toxicity
Abstract:
... Although bisulfite is able to activate manganese oxides for enhanced oxidation of organic contaminants with donor-electron functions, the removal mechanisms for some esters remain poorly understood. In this study, we investigated the bisulfite/MnO2-accelerated transformation of methyl parathion (MP), a recalcitrant and toxic organophosphorus pesticide (OPP). The removal rate constants of MP depend ...
DOI:
10.1016/j.jhazmat.2019.120756

5. Remediation of PAHs contaminated soil using a sequence of soil washing with biosurfactant produced by Pseudomonas aeruginosa strain PF2 and electrokinetic oxidation of desorbed solution, effect of electrode modification with Fe3O4 nanoparticles

Author:
Pourfadakari, Sudabeh; Ahmadi, Mehdi; Jaafarzadeh, Neematollah; Takdastan, Afshin; Neisi, Abd Alkazem; Ghafari, Shokouh; Jorfi, Sahand
Source:
Journal of hazardous materials 2019 v.379 pp. 120839
ISSN:
0304-3894
Subject:
Pseudomonas aeruginosa; anthracenes; biosurfactants; carbon electrodes; desorption; electric potential difference; electrolytes; emulsifying; graphene; heptane; hexadecane; hexane; liquid chromatography; magnetite; mass spectrometry; micelles; models; nanoparticles; oxidation; pH; phenanthrenes; polluted soils; remediation; rhamnolipids; salt tolerance; soil washing
Abstract:
... This work aimed to investigate the performance of biosurfactant, produced by a halotolerant bacterial strain, Pseudomonas aeruginosa PF2, for desorption of PAHs from soil, followed by electrokinetic oxidation of the desorbed solution using Magnetite Nanoparticles Modified Graphite (MNMG). Pyrene (PYR), anthracene (ANT) and phenanthrene (PHE) were used as contamination model. Produced and extracted ...
DOI:
10.1016/j.jhazmat.2019.120839

6. 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

7. Ferrous metal-organic frameworks with stronger coordinatively unsaturated metal sites for persulfate activation to effectively degrade dibutyl phthalate in wastewater

Author:
Chi, Haiyuan; Wan, Jinquan; Ma, Yongwen; Wang, Yan; Ding, Su; Li, Xitong
Source:
Journal of hazardous materials 2019 v.377 pp. 163-171
ISSN:
0304-3894
Subject:
catalysts; catalytic activity; coordination polymers; crystal structure; dibutyl phthalate; electrochemistry; electron transfer; ions; iron; oxidation; pH; persistent organic pollutants; wastewater
Abstract:
... In the advanced oxidation system (AOPs) of persulfate (PS) activated by iron-based metal-organic frameworks (MOFs), aim at solving the problem on the treatment difficulty of wastewater with low concentration persistent organic pollutants (POPs), a new type of ferrous metal-organic frameworks (Fe(Ⅱ)-MOFs) with stronger coordinatively unsaturated metal sites (CUS) was successfully synthesized by dif ...
DOI:
10.1016/j.jhazmat.2019.05.081

8. Improved photocatalytic degradation of perfluorooctanoic acid on oxygen vacancies-tunable bismuth oxychloride nanosheets prepared by a facile hydrolysis

Author:
Song, Zhou; Dong, Xuelin; Fang, Jindong; Xiong, Caihua; Wang, Nan; Tang, Xingmin
Source:
Journal of hazardous materials 2019 v.377 pp. 371-380
ISSN:
0304-3894
Subject:
active sites; bismuth; electrons; hydrolysis; hydroxyl radicals; nanocrystals; nanosheets; oxidation; oxygen; pH; perfluorooctanoic acid; persistent organic pollutants; photocatalysis; solvents; water treatment
Abstract:
... Oxygen vacancies (OVs) defective BiOCl nanosheets are important for developing efficient hole (h+) oxidation. Herein, a facile hydrolysis without the use of organic solvent was developed for preparing OVs-controllable BiOCl nanosheets, which was then applied to degrade perfluorooctanoic acid (PFOA), a typical persistent organic pollutant, which is resistance to the oxidation by hydroxyl radicals ( ...
DOI:
10.1016/j.jhazmat.2019.05.084

9. Reduction of phoxim pesticide residues from grapes by atmospheric pressure non-thermal air plasma activated water

Author:
Zheng, Yongping; Wu, Songjie; Dang, Jie; Wang, Shifang; Liu, Zhengxin; Fang, Jing; Han, Ping; Zhang, Jue
Source:
Journal of hazardous materials 2019 v.377 pp. 98-105
ISSN:
0304-3894
Subject:
air; ascorbic acid; atmospheric pressure; color; firmness; grapes; high performance liquid chromatography; mass spectrometry; nitrogen; oxidation; oxygen; pH; pesticide residues; phoxim; superoxide dismutase
Abstract:
... In this study, we propose a novel strategy, plasma activated water (PAW) to reduce pesticide residues on agricultural products. To validate its feasibility and effectiveness, we employee high-performance liquid chromatography (HPLC) to detect phoxim on grapes. HPLC results suggest that the reduction of phoxim on grapes achieve 73.60% after treated 10 min by PAW prepared 30 min, and the concentrati ...
DOI:
10.1016/j.jhazmat.2019.05.058

10. Surface treatment by the Fe(III)/sulfite system for flotation separation of hazardous chlorinated plastics from the mixed waste plastics

Author:
Luo, Maozhi; Wang, Hui; Zhang, Yingshuang; Zhong, Yiwei; Wang, Kangyu
Source:
Journal of hazardous materials 2019 v.377 pp. 34-41
ISSN:
0304-3894
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; ferric sulfate; free radicals; hydrophilicity; iron; oxidation; pH; plastics; poly(vinyl chloride); polystyrenes; sodium sulfite; styrene; temperature; wastes
Abstract:
... A novel advanced oxidation process by a combination of Fe(III) and sulfite for surface treatment of waste plastic mixtures is proposed. The Fe(III)/sulfite system has been found to enhance hydrophilicity of the mixed waste plastics, including acrylonitrile butadiene styrene (ABS), polystyrene (PS) and polycarbonate (PC), while it has little effect on hazardous polyvinyl chloride (PVC), thus promot ...
DOI:
10.1016/j.jhazmat.2019.05.049

11. Transient–state operation of an anoxic biotrickling filter for H2S removal

Author:
Khanongnuch, Ramita; Di Capua, Francesco; Lakaniemi, Aino-Maija; Rene, Eldon R.; Lens, Piet N.L.
Source:
Journal of hazardous materials 2019 v.377 pp. 42-51
ISSN:
0304-3894
Subject:
bioaugmentation; biofilters; biomass; hydrogen sulfide; liquids; nitrates; oxidation; pH; sulfates
Abstract:
... The application of an anoxic biotrickling filter (BTF) for H2S removal from contaminated gas streams is a promising technology for simultaneous H2S and NO3− removal. Three transient–state conditions, i.e. different liquid flow rates, wet–dry bed operations and H2S shock loads, were applied to a laboratory–scale anoxic BTF. In addition, bioaugmentation of the BTF with a H2S removing–strain, Paracoc ...
DOI:
10.1016/j.jhazmat.2019.05.043

12. Highly efficient arsenic sorbent based on residual from water deironing – sorption mechanisms and column studies

Author:
Ociński, Daniel; Mazur, Piotr
Source:
Journal of hazardous materials 2019
ISSN:
0304-3894
Subject:
adsorption; arsenates; arsenic; arsenites; chitosan; composite polymers; crosslinking; durability; imines; iron oxides; manganese dioxide; models; oxidation; pH; sodium hydroxide; sorbents; sorption isotherms; wastes
Abstract:
... The hybrid polymer obtained by entrapment of Fe-Mn waste oxides from water deironing into a chitosan matrix was evaluated as an As(III) and As(V) sorbent. Its maximum adsorption capacity determined from a Langmuir isotherm model was 44.17 mg As(III)/g or 26.80 mg As(V)/g and 50.73 mg As(III)/g or 82.99 mg As(V)/g under neutral and acidic conditions, respectively. The pH markedly influenced the eff ...
DOI:
10.1016/j.jhazmat.2019.121062

13. Novel α-Fe2O3/MXene nanocomposite as heterogeneous activator of peroxymonosulfate for the degradation of salicylic acid

Author:
Ding, Mingmei; Chen, Wei; Xu, Hang; Shen, Zhen; Lin, Tao; Hu, Kai; Lu, Chun hui; Xie, Zongli
Source:
Journal of hazardous materials 2019
ISSN:
0304-3894
Subject:
X-ray photoelectron spectroscopy; aqueous solutions; catalysts; catalytic activity; electron paramagnetic resonance spectroscopy; electron transfer; free radicals; hematite; hydroxyl radicals; nanocomposites; nanoparticles; oxidation; pH; salicylic acid; sulfates; wastewater; water treatment
Abstract:
... The development of non-cobalt-based heterogeneous catalysts with efficient catalytic activity, good stability and nontoxicity is very important for the application of peroxymonosulfate-based advanced oxidation processes (AOPs) in water treatment. In this work, with two dimensional MXene as the catalyst substrate, a novel α-Fe2O3/MXene (FM) nanocomposite was fabricated through a facile solvothermal ...
DOI:
10.1016/j.jhazmat.2019.121064

14. 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

15. Ion exchange membranes enhance the electrokinetic in situ chemical oxidation of PAH-contaminated soil

Author:
Xu, Hongting; Song, Yue; Cang, Long; Zhou, Dongmei
Source:
Journal of hazardous materials 2019
ISSN:
0304-3894
Subject:
cathodes; cation-exchange membranes; electroosmosis; energy use and consumption; oxidants; oxidation; pH; polluted soils; polycyclic aromatic hydrocarbons; redox potential; remediation; soil properties
Abstract:
... Electrokinetic in situ chemical oxidation (EK-ISCO) could be used to remediate inorganic/organic-contaminated soil. Oxidizing agents were effectively delivered to the contaminated zones through electromigration and the electroosmosis. However, the cathode may react with oxidants, which would reduce the oxidative effect and lead to low contaminant removal rates. In this study, ion-exchange membrane ...
DOI:
10.1016/j.jhazmat.2019.121042

16. Immobilized laccase on polyimide aerogels for removal of carbamazepine

Author:
Simón-Herrero, Carolina; Naghdi, Mitra; Taheran, Mehrdad; Kaur Brar, Satinder; Romero, Amaya; Valverde, José L.; Avalos Ramirez, Antonio; Sánchez-Silva, Luz
Source:
Journal of hazardous materials 2019 v.376 pp. 83-90
ISSN:
0304-3894
Subject:
aerogels; biocatalysts; biodegradation; chemical bonding; drugs; immobilized enzymes; laccase; oxidation; pH; storage quality; sustainable technology; temperature; wastewater treatment
Abstract:
... Since it is known that conventional wastewater treatment plants cannot completely remove pharmaceutical compounds, such as carbamazepine, the need for their removal has intensified. The use of biocatalysts, such as enzyme is an environmentally friendly method for carbamazepine biodegradation. Nevertheless, enzyme immobilization is required to facilitate the recovery and reusability and avoid the l ...
DOI:
10.1016/j.jhazmat.2019.05.032

17. Ozonation of ammonia at low temperature in the absence and presence of MgO

Author:
Liu, Hailong; Chen, Lu; Ji, Li
Source:
Journal of hazardous materials 2019 v.376 pp. 125-132
ISSN:
0304-3894
Subject:
ammonia; ammonium; biological treatment; catalysts; catalytic activity; chlorides; cold; magnesium oxide; nitrous oxide; oxidation; ozonation; ozone; pH; pollution; pollution control; temperature; weather
Abstract:
... Ozone oxidation and ozonation catalyzed with MgO were applied to remove ammonia in water at low temperature (10℃). Results show that pH played a critical role in both ozonation and catalytic ozonation for ammonia removal, especially in the ozonation rate of ammonia and the types of oxidation products. For single ozonation, both O3 and OH contributed to ammonia degradation. Lower pH is beneficial t ...
DOI:
10.1016/j.jhazmat.2019.05.034

18. Effects of pH on the Simultaneous Removal of Hydrogen Sulfide and Ammonia in a Combined Absorption and Electro-Oxidation System

Author:
Kang, Jeong-Hee; Yoon, Yeojoon; Song, JiHyeon
Source:
Journal of hazardous materials 2019
ISSN:
0304-3894
Subject:
absorption; ammonia; biogas; gases; hydrogen sulfide; liquids; mass transfer; oxidation; pH; solubility
Abstract:
... Biogas commonly contains both H2S and NH3, and these impurities need to be removed before use. In this study, a combined system consisting of an absorption column and an electro-oxidation reactor was developed to simultaneously treat H2S and NH3. In particular, the effect of the pH (6, 8, and 10) on the system performance was investigated. The mass transfer rate of H2S from the gas to liquid phase ...
DOI:
10.1016/j.jhazmat.2019.121011

19. 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

20. Synthesis of polyimide-modified carbon nanotubes as catalyst for organic pollutant degradation via production of singlet oxygen with peroxymonosulfate without light irradiation

Author:
Wei, Mingyu; Shi, Xiaowen; Xiao, Ling; Zhang, Haifei
Source:
Journal of hazardous materials 2019
ISSN:
0304-3894
Subject:
acid orange 7; ambient temperature; aqueous solutions; carbon nanotubes; catalysts; catalytic activity; electron paramagnetic resonance spectroscopy; free radicals; hydroxyl radicals; irradiation; oxidation; pH; pollutants; recycling; remediation; singlet oxygen; sulfates
Abstract:
... Polyimide-modified carbon nanotubes (PI/CNTs) were synthesized via a solvent-free thermal method and used as a metal-free catalyst to activate peroxymonosulfate for organic contaminant degradation without light irradiation. The characterization results suggested that PI was loaded onto the surface of CNTs. The catalytic ability of the PI/CNTs was strongly correlated with the content of PI in the c ...
DOI:
10.1016/j.jhazmat.2019.120993