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1. Electrocoagulation using stainless steel anodes: Simultaneous removal of phosphates, Orange II and zinc ions

Author:
Dura, Adelaide; Breslin, Carmel B.
Source:
Journal of hazardous materials 2019 v.374 pp. 152-158
ISSN:
0304-3894
Subject:
acid orange 7,   etc   ; anodes; chromium; corrosion; electrocoagulation; ions; iron; phosphates; stainless steel; surface area; wastewater; zinc;     Show all 12 Subjects
Abstract:
... Two stainless steel anodes, AISI 420 and AISI 310, and pure iron were compared in an electrocoagulation study for the simultaneous removal of phosphates, Orange II and Zinc ions from a synthetic wastewater at a current density of 11.7 mA cm–2 and a surface area to volume ratio of 19.4 m–1. High removal efficiencies were observed with AISI 420 and pure iron, reaching values between 88% and 99%, whi ...
DOI:
10.1016/j.jhazmat.2019.04.032

2. 3D hierarchical graphene oxide-NiFe LDH composite with enhanced adsorption affinity to Congo red, methyl orange and Cr(VI) ions

Author:
Zheng, Yingqiu; Cheng, Bei; You, Wei; Yu, Jiaguo; Ho, Wingkei
Source:
Journal of hazardous materials 2019 v.369 pp. 214-225
ISSN:
0304-3894
Subject:
methyl orange,   etc   ; adsorption; aquatic environment; chromium; electron microscopy; graphene; ions; kinetics; microparticles; models; nanosheets; pollutants; sorption isotherms;     Show all 13 Subjects
Abstract:
... Three-dimensional (3D) hierarchical graphene oxide-NiFe layered double hydroxide (GO-NiFe LDH) composite with sandwich-like structure is fabricated using a facile one-pot hydrothermal reaction. Electron microscopy images demonstrate that the GO-NiFe LDH composite possesses a highly porous and well-ordered structure. Both sides of the GO are fully covered by the LDH nanosheets, resulting in the san ...
DOI:
10.1016/j.jhazmat.2019.02.013

3. Construction of Ni-doped SnO2-SnS2 heterojunctions with synergistic effect for enhanced photodegradation activity

Author:
Chen, Dayong; Huang, Shoushuang; Huang, Ruting; Zhang, Qian; Le, Thanh-Tung; Cheng, Erbo; Yue, Rong; Hu, Zhangjun; Chen, Zhiwen
Source:
Journal of hazardous materials 2019 v.368 pp. 204-213
ISSN:
0304-3894
Subject:
methyl orange,   etc   ; active sites; air; electrons; irradiation; lighting; microparticles; nickel; oxidation; photocatalysis; photolysis; porosity; quantum dots; synergism; tin dioxide;     Show all 15 Subjects
Abstract:
... Construction of heterostructures with proper band alignment and effective transport and separation of photogenerated charges is highly expected for photocatalysis. In this work, Ni-doped SnO2-SnS2 heterostructures (NiSnSO) are simply prepared by thermal oxidation of Ni-doped hierarchical SnS2 microspheres in the air. When applied for the photodegradation of organic contaminants, these NiSnSO exhib ...
DOI:
10.1016/j.jhazmat.2019.01.009

4. Novel synthesis of nanoscale zerovalent iron from coal fly ash and its application in oxidative degradation of methyl orange by Fenton reaction

Author:
Yoon, Sunho; Bae, Sungjun
Source:
Journal of hazardous materials 2019 v.365 pp. 751-758
ISSN:
0304-3894
Subject:
methyl orange,   etc   ; borohydrides; chelation; coal fly ash; decolorization; hydrochloric acid; hydrogen peroxide; iron; oxidation; pH; total organic carbon;     Show all 11 Subjects
Abstract:
... We firstly developed a novel synthesis method of nanoscale zerovalent iron (NZVI) using Fe sources in coal fly ash (CFA) for the oxidative degradation of methyl orange by Fenton reaction. Hydrochloric acid (HCl) and methyl isobutyl ketone (MIBK) were used for Fe dissolution from CFA and selective Fe(III) chelation, respectively. Among varied HCl concentrations, 7 N HCl showed the best performance ...
DOI:
10.1016/j.jhazmat.2018.11.073

5. Degradation of organic pollutants by anaerobic methane-oxidizing microorganisms using methyl orange as example

Author:
Fu, Liang; Bai, Ya-Nan; Lu, Yong-Ze; Ding, Jing; Zhou, Dandan; Zeng, Raymond Jianxiong
Source:
Journal of hazardous materials 2019 v.364 pp. 264-271
ISSN:
0304-3894
Subject:
methyl orange,   etc   ; Pseudoxanthomonas; carbon; electron transfer; isotopes; long term experiments; metals; methane; microbial communities; microorganisms; nitrates; nitrites; oxidation; pollutants; sulfates;     Show all 15 Subjects
Abstract:
... Anaerobic oxidation of methane (AOM) microorganisms widespread in nature and they are able to utilize methane as electron donor to reduce sulfate, nitrate, nitrite, and high valence metals. However, whether persistent organic contaminants can also be degraded remains unknown. In this study, the organic pollutant methyl orange (MO) was used to address this open question. The initial concentration o ...
DOI:
10.1016/j.jhazmat.2018.10.036

6. Sequestrating anionic and cationic dyes from wastewater using spray dried biopolymeric magnetic composite: Experimental and theoretical studies

Author:
Olusegun, S.J.; Rodrigues, G.L.S.; Freitas, E.T.F.; Lara, L.R.S.; Rocha, W.R.; Mohallem, N.D.S.
Source:
Journal of hazardous materials 2019 v.380 pp. 120872
ISSN:
0304-3894
Subject:
acid orange II,   etc   ; adsorbents; adsorption; chitosan; cobalt; crosslinking; encapsulation; ferrimagnetic materials; heat production; hydrogen bonding; magnetism; methylene blue; microparticles; models; pH; spray drying; wastewater;     Show all 17 Subjects
Abstract:
... Spray dried cross-linked chitosan/cobalt ferrite composite was synthesized and applied as an adsorbent for the removal of acid orange II and methylene blue. The composite was structurally, thermally, morphologically and magnetically characterized. The result obtained shows that the magnetic composite was in form of microspheres, while cobalt ferrite was encapsulated in the cross-linked chitosan wi ...
DOI:
10.1016/j.jhazmat.2019.120872

7. Hydrodynamics of up-flow hybrid anaerobic digestion reactors with built-in bioelectrochemical system

Author:
Cui, Min-Hua; Sangeetha, Thangavel; Gao, Lei; Wang, Ai-Jie
Source:
Journal of hazardous materials 2019
ISSN:
0304-3894
Subject:
acid orange 7,   etc   ; anaerobic digesters; anaerobic digestion; bioelectrochemistry; carbon fibers; decolorization; electrodes; graphene; hydrodynamics; mass transfer; mixing; models; porous media; sludge; wastewater treatment;     Show all 15 Subjects
Abstract:
... Understanding the electrode configuration is vital for the successful application of bioelectrochemical system (BES) in recalcitrant wastewater treatment. Especially in those traditional anaerobic processes that integrate with BES to construct effective hybrid bioreactors. Hybrid bioreactors employed granular graphite as electrode material achieved 86.62 ± 1.83% decolorization efficiency of azo dy ...
DOI:
10.1016/j.jhazmat.2019.121046

8. Superior adsorption capacity of functionalised straw adsorbent for dyes and heavy-metal ions

Author:
Liu, Qiming; Li, Yaoyue; Chen, Huafeng; Lu, Jian; Yu, Guangsuo; Möslang, Maxim; Zhou, Yanbo
Source:
Journal of hazardous materials 2019
ISSN:
0304-3894
Subject:
methyl orange,   etc   ; acrylamides; adsorbents; adsorption; aqueous solutions; chromates; citric acid; copper; dyeing; electrostatic interactions; heavy metals; ions; methylene blue; moieties; pollutants; straw; wastewater;     Show all 17 Subjects
Abstract:
... Dyes and heavy-metal ions are common pollutants in printing and dyeing wastewater, and are thus attracting considerable attention. Herein, an eco-friendly straw-based adsorbent, WS-CA-AM, was prepared by grafting with acrylamide (AM) and citric acid (CA) groups to remove representative dyes and heavy metals from aqueous solution. The adsorption capacities of WS-CA-AM for methyl orange (MO) and met ...
DOI:
10.1016/j.jhazmat.2019.121040

9. Electronic and Nanostructure Engineering of Bifunctional MoS2 towards Exceptional Visible-Light Photocatalytic CO2 Reduction and Pollutant Degradation

Author:
Khan, Bilawal; Raziq, Fazal; Bilal Faheem, M.; Umar Farooq, M.; Hussain, Sadam; Ali, Farman; Ullah, Abid; Mavlonov, Abdurashid; Zhao, Yang; Liu, Zhongran; Tian, He; Shen, Huahai; Zu, Xiaotao; Li, Sean; Xiao, Haiyan; Xiang, Xia; Qiao, Liang
Source:
Journal of hazardous materials 2019
ISSN:
0304-3894
Subject:
methyl orange,   etc   ; carbon dioxide; electrochemistry; energy; engineering; hydroxyl radicals; light; methane; methylene blue; molybdenum disulfide; nanocomposites; nanosheets; nanosilver; photocatalysis; photocatalysts; pollutants; silver; surface area; tin dioxide;     Show all 19 Subjects
Abstract:
... With recently increasing environmental issues and foreseeable energy crisis, it is desirable to design cheap, efficient, and visible-light responsive nano-photocatalyst for CO2 conversion and pollutant degradation. Herein, we report a flower-like of MoS2-based hybrid photocatalyst with high efficiency through nanostructure and electronic structure engineering. Nanostructure control is used to fabr ...
DOI:
10.1016/j.jhazmat.2019.120972

10. Mechanistic insights for the electro-Fenton regeneration of carbon materials saturated with methyl orange: Dominance of electrodesorption

Author:
Xiao, Ye; Hill, Josephine M.
Source:
Journal of hazardous materials 2019 v.367 pp. 59-67
ISSN:
0304-3894
Subject:
methyl orange,   etc   ; activated carbon; adsorbents; adsorption; benzoic acid; cathodes; electrochemistry; electrostatic interactions; ferric oxide; maghemite; magnetism; mathematical models; methylene blue; micropores; oxidation; pollution control; porous media;     Show all 17 Subjects
Abstract:
... Adsorption followed by regeneration of the adsorbent is a sustainable way to remove pollutants from water systems. In this study, the electro-Fenton regeneration of activated carbon and mesoporous carbon loaded with magnetic γ-Fe2O3 and then saturated with an anionic adsorbate, methyl orange, has been studied. The saturated adsorbents were regenerated and the influence of several factors on the re ...
DOI:
10.1016/j.jhazmat.2018.12.066

11. Recyclable polyvinyl alcohol sponge containing flower-like layered double hydroxide microspheres for efficient removal of As(V) anions and anionic dyes from water

Author:
Dai, Xiaohui; Zhang, Shuxin; Waterhouse, Geoffrey I.N.; Fan, Hai; Ai, Shiyun
Source:
Journal of hazardous materials 2019 v.367 pp. 286-292
ISSN:
0304-3894
Subject:
methyl orange,   etc   ; adsorbents; adsorption; anions; arsenic; dyes; hot water treatment; hydroxides; iron; microparticles; pollutants; pollution control; polyvinyl alcohol; powders; surface area; thermal stability; water treatment; zinc;     Show all 18 Subjects
Abstract:
... Layered double hydroxides (LDHs) are very promising adsorbents for the removal of anionic pollutants from water. However, the low adsorption efficiency and recycling difficulty of conventional LDH powders are obstacles to practical applications. Herein, a novel Zn/Fe-LDH composite sponge was successfully fabricated using a simple in-situ hydrothermal method. Characterization studies revealed that ...
DOI:
10.1016/j.jhazmat.2018.12.092

12. Removal of organic dye by biomass-based iron carbide composite with an improved stability and efficiency

Author:
Zhao, Nan; Chang, Feiran; Hao, Boyuan; Yu, Lian; Morel, Jean Louis; Zhang, Jing
Source:
Journal of hazardous materials 2019
ISSN:
0304-3894
Subject:
methyl orange,   etc   ; biomass; carbonation; chemical reduction; colorimetry; dyes; high performance liquid chromatography; iron; mass spectrometry; models; oxidation; oxygen; pH; pollutants; soil; water pollution;     Show all 16 Subjects
Abstract:
... The efficiency of zero-valent iron (Fe0) for the degradation of contaminants in water or soil can be highly reduced by side reactions with oxygen or water. This work was conducted to test whether this drawback can be effectively suppressed by the carbonation of Fe0 with pyrolyzed biomass, which forms a Fe3C composite. The composite Fe3C was characterized and its reactivity and stability were asses ...
DOI:
10.1016/j.jhazmat.2019.02.077

13. Acid-treated clay catalysts for organic dye ozonation – Thorough mineralization through optimum catalyst basicity and hydrophilic character

Author:
Boudissa, Farida; Mirilà, Diana; Arus, Vasilica-Alisa; Terkmani, Thizizi; Semaan, Sirène; Proulx, Mélanie; Nistor, Ileana-Denisa; Roy, René; Azzouz, Abdelkrim
Source:
Journal of hazardous materials 2019 v.364 pp. 356-366
ISSN:
0304-3894
Subject:
methyl orange,   etc   ; adsorption; bentonite; carbon dioxide; catalysts; catalytic activity; cation exchange; clay; desorption; hydrophilicity; hydrophobic bonding; iron; methylene blue; mineralization; montmorillonite; ozonation;     Show all 16 Subjects
Abstract:
... Catalytic ozonation of Methylene Blue, Methyl Green, Methyl Orange and Methyl-thymol Blue was investigated in the presence of ion-exchanged montmorillonite (NaMt and Fe(II)Mt), crude bentonite and acid-activated counterparts. An original approach never tackled so far consisted in correlating the basicity and hydrophilic character to the dye-catalyst interactions occurring on the catalyst surface. ...
DOI:
10.1016/j.jhazmat.2018.09.070

14. 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,   etc   ; 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;     Show all 17 Subjects
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

15. Enhanced dyes adsorption from wastewater via Fe3O4 nanoparticles functionalized activated carbon

Author:
Liu, Xiaoduo; Tian, Jiefu; Li, Yuanyuan; Sun, Ningfei; Mi, Shu; Xie, Yong; Chen, Ziyu
Source:
Journal of hazardous materials 2019 v.373 pp. 397-407
ISSN:
0304-3894
Subject:
methyl orange,   etc   ; activated carbon; adsorbents; adsorption; aqueous solutions; dyes; equations; heat production; iron oxides; magnetic separation; magnetism; models; moieties; nanoparticles; physicochemical properties; purification methods; rhodamines; surface area; wastewater; wastewater treatment;     Show all 20 Subjects
Abstract:
... Fe3O4 nanoparticles functionalized activated carbon (Fe3O4/AC) as an adsorbent was prepared and used for fast and effectively removing rhodamine B (RhB) and methyl orange (MO) from aqueous solution. Its physical and chemical properties characterized indicate that the adsorbent possesses abundant surface functional groups, sensitive magnetic response and enhanced specific surface area. Batch experi ...
DOI:
10.1016/j.jhazmat.2019.03.103

16. Constructing a new Z-scheme multi-heterojunction photocataslyts Ag-AgI/BiOI-Bi2O3 with enhanced photocatalytic activity

Author:
Yan, Qishe; Xie, Xin; Liu, Yonggang; Wang, Shenbo; Zhang, Menghan; Chen, Yongyang; Si, Yushan
Source:
Journal of hazardous materials 2019 v.371 pp. 304-315
ISSN:
0304-3894
Subject:
methyl orange,   etc   ; X-ray diffraction; X-ray photoelectron spectroscopy; bismuth; electron paramagnetic resonance spectroscopy; energy-dispersive X-ray analysis; free radicals; iodides; irradiation; models; nanoparticles; photocatalysis; scanning electron microscopy; silver; superoxide anion; transmission electron microscopy;     Show all 16 Subjects
Abstract:
... The series Ag-AgI/BiOI-Bi2O3 visible-light-driven photocataslyts were successfully synthesized by solvothermal method. The as-synthesized samples were systematically characterized by XRD, SEM, TEM, EDS, BET, XPS, FR-IR, UV–vis DRS, photoelectrochemical measurements and EPR. The formation mechanism of the new composite photocataslyts was investigated and the simulate formation process had been illu ...
DOI:
10.1016/j.jhazmat.2019.03.031

17. Space-confined growth of layered basic zinc acetate nanosheets and their orderly fragmented ZnO nanoparticles on clay platelets

Author:
Ahmad, Shakiaz; Su, Xintai; Yang, Chao; Wang, Xinyu; Liu, Xuemin; Wang, Jide
Source:
Journal of hazardous materials 2019 v.371 pp. 213-223
ISSN:
0304-3894
Subject:
methyl orange,   etc   ; Fourier transform infrared spectroscopy; X-ray diffraction; adsorption; bentonite; blood platelets; differential scanning calorimetry; irradiation; nanoparticles; nanosheets; photolysis; scanning electron microscopy; thermogravimetry; transmission electron microscopy; ultraviolet radiation; zinc acetate; zinc oxide;     Show all 17 Subjects
Abstract:
... Here, hierarchical nanostructures of clay-based hybrids were synthesized via a space-confined growth of layered basic zinc acetate (LBZA) nanosheets standing upright on both sides of bentonite clay platelets. These thermally instable LBZA nanosheets were thermally decomposed and fragmented into ZnO nanoparticles well-dispersed on bentonite platelets. The morphology and structure of LBZA/bentonite ...
DOI:
10.1016/j.jhazmat.2019.02.111

18. A novel L-Histidine (C, N) codoped-TiO2-CdS nanocomposite for efficient visible photo-degradation of recalcitrant compounds from wastewater

Author:
Zangeneh, Hadis; Zinatizadeh, Ali Akbar; Zinadini, Sirus; Feyzi, Mostafa; Rafiee, Ezzat; Bahnemann, Detlef W.
Source:
Journal of hazardous materials 2019 v.369 pp. 384-397
ISSN:
0304-3894
Subject:
methyl orange,   etc   ; Fourier transform infrared spectroscopy; X-ray diffraction; chemical oxygen demand; histidine; irradiation; nanocomposites; nanoparticles; oil mill effluents; optical properties; pH; photocatalysts; photoluminescence; photolysis; reflectance spectroscopy; response surface methodology; scanning electron microscopy; titanium dioxide; wastewater;     Show all 19 Subjects
Abstract:
... The aim of current study is to synthesis novel visible driven photocatalysts (L-Histidine (C, N) codoped-TiO2-CdS) with different loadings of L-Hisitdine (1, 2, and 3 wt.%) and CdS (1:9, 7:1, and 1:5 mass ratios of CdS to TiO2). Then, their application for photo-degradation of methyl orange (MO) and biologically treated palm oil mill effluent (POME) were studied. The structure, optical properties, ...
DOI:
10.1016/j.jhazmat.2019.02.049

19. The first synthesis of CdFe12O19 nanostructures and nanocomposites and considering of magnetic, optical, electrochemical and photocatalytic properties

Author:
Mahdiani, Maryam; Sobhani, Azam; Salavati-Niasari, Masoud
Source:
Journal of hazardous materials 2019 v.367 pp. 607-619
ISSN:
0304-3894
Subject:
methyl orange,   etc   ; Fourier transform infrared spectroscopy; X-ray diffraction; ambient temperature; cadmium; electrochemistry; energy-dispersive X-ray analysis; magnetism; methylene blue; nanocomposites; nanomaterials; particle size; photocatalysis; scanning electron microscopy; transmission electron microscopy; ultraviolet-visible spectroscopy;     Show all 16 Subjects
Abstract:
... CdFe12O19 nanostructures and nanocomposites were synthesized via sol-gel auto-combustion method. The CdFe12O19/CdTiO3 nanocomposites were prepared at 850 °C after 1 h calcination, when molar ratio of Cd:Ti is 1:1. Effects of the molar ratio of Cd:Ti, type of precursor and calcination temperature were investigated. Both nanostructures and nanocomposites were ferromagnetic at room temperature, with ...
DOI:
10.1016/j.jhazmat.2019.01.007

20. Preparation and electrochemical treatment application of Ce-PbO2/ZrO2 composite electrode in the degradation of acridine orange by electrochemical advanced oxidation process

Author:
Yao, Yingwu; Ren, Bingli; Yang, Yang; Huang, Chunjiao; Li, Mengyao
Source:
Journal of hazardous materials 2019 v.361 pp. 141-151
ISSN:
0304-3894
Subject:
acridine orange,   etc   ; X-ray diffraction; ammonium; anodes; byproducts; carbon dioxide; cerium; durability; electrochemistry; electrolysis; high performance liquid chromatography; lead; lead nitrate; mass spectrometry; oxidation; oxygen production; pH; scanning electron microscopy; zirconium oxide;     Show all 19 Subjects
Abstract:
... Novel Ce-PbO2/ZrO2 composite electrodes were successfully fabricated in lead nitrate solution containing cerium ions and ZrO2 particles by composite electrodeposition method. SEM images and XRD results indicated that Ce-PbO2/ZrO2 composite electrodes have compact structure and fine grain size. Ce-PbO2/ZrO2 composite electrode has higher oxygen evolution overpotential and stability than Ce-PbO2 ele ...
DOI:
10.1016/j.jhazmat.2018.08.081