51
|
Kanjwal MA, Lo KKS, Leung WWF. Graphene composite nanofibers as a high-performance photocatalyst for environmental remediation. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.01.044] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
52
|
Zheng C, Zheng H, Wang Y, Sun Y, An Y, Liu H, Liu S. Modified magnetic chitosan microparticles as novel superior adsorbents with huge "force field" for capturing food dyes. JOURNAL OF HAZARDOUS MATERIALS 2019; 367:492-503. [PMID: 30620925 DOI: 10.1016/j.jhazmat.2018.12.120] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Revised: 12/29/2018] [Accepted: 12/31/2018] [Indexed: 06/09/2023]
Abstract
In this study, modified magnetic chitosan microparticles (MCDs) were fabricated and used as adsorbents for the removal of Food Yellow 3 (FY3) and Acid Yellow 23 (AY23) from aqueous solution. The magnetic microparticles were characterized by scanning electronic microscope, Brunauer-Emmett-Teller specific surface area, elemental analysis, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, thermogravimetry analysis, differential scanning calorimetry, and vibrating-sample magnetometer. Then, the effects of pH value, initial dye concentration, and contact time on the adsorption of FY3 and AY23 by MCDs were investigated. Evidently, MCDs showed excellent adsorption performance for both food dyes, and their adsorption capacities (833.33 mg/g for FY3 and 666.67 mg/g for AY23) were considerably higher than those of unmodified adsorbents, which could be attributed to the electrostatic interaction and ion exchange between the grafted cationic polymer and food dyes. Adsorption isotherm and kinetic data of the magnetic microparticles were well fitted by Langmuir isotherm and pseudo-second-order kinetic model, respectively. The regeneration and reusability of MCDs were also explored. Results showed that more than 80% adsorption capacities of MCDs for FY3 and AY23 remained after five adsorption-desorption cycles.
Collapse
Affiliation(s)
- Chaofan Zheng
- Key laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing, 400045, China; National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, Chongqing, 400045, China.
| | - Huaili Zheng
- Key laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing, 400045, China; National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, Chongqing, 400045, China.
| | - Yongjuan Wang
- Key laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing, 400045, China; National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, Chongqing, 400045, China
| | - Yongjun Sun
- College of Urban Construction, Nanjing Tech University, Nanjing, 211800, China
| | - Yanyan An
- Key laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing, 400045, China; National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, Chongqing, 400045, China
| | - Hongxia Liu
- Key laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing, 400045, China; National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, Chongqing, 400045, China
| | - Shuang Liu
- Key laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing, 400045, China; National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, Chongqing, 400045, China
| |
Collapse
|
53
|
Experimental and Computational Design of Highly Active Ce–ZrO2–GO Photocatalyst for Eosin Yellow Dye Degradation: The Role of Interface and Ce3+ Ion. Catal Letters 2019. [DOI: 10.1007/s10562-019-02729-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
54
|
Vidyasagar D, Gupta A, Balapure A, Ghugal SG, Shende AG, Umare SS. 2D/2D Wg-C3N4/g-C3N4 composite as “Adsorb and Shuttle” model photocatalyst for pollution mitigation. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2018.10.038] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
55
|
Robust, recoverable poly(N,N-dimethylacrylamide)-based hydrogels crosslinked by vinylated chitosan with recyclable adsorbability for acid red. J Appl Polym Sci 2019. [DOI: 10.1002/app.47473] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
56
|
Wu H, Chen R, Du H, Zhang J, Shi L, Qin Y, Yue L, Wang J. Synthesis of activated carbon from peanut shell as dye adsorbents for wastewater treatment. ADSORPT SCI TECHNOL 2018. [DOI: 10.1177/0263617418807856] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
In this study, the adsorption capacities of peanut shell activated carbon samples prepared using three types of peanut shell as raw material were compared. The effects of activation state, carbonization temperature, carbonization time, adsorption time during decolorization, and dosage on the performance of the peanut shell activated carbon samples were investigated. The performance of the modified peanut shell (activated carbon) on the decolorization of reactive brilliant blue X-BR and the adsorption kinetics were evaluated systematically. Among the three types of peanut shell activated carbon, the activated carbon that was first activated by phosphoric acid and then carbonized at 450°C for 3 h displayed the best performance, with an optimum dosage of 4 g l−1 and an optimum adsorption time of 2 h. The pseudo-second-order kinetics equation and the intraparticle diffusion equation could well describe the adsorption behavior of the activated carbon prepared by phosphoric acid activation. Intraparticle diffusion was not the only factor affecting the adsorption rate of the activated carbon on reactive brilliant blue X-BR.
Collapse
Affiliation(s)
| | | | | | | | | | - Yu Qin
- Nanjing Tech University, China
| | | | | |
Collapse
|
57
|
He K, Chen G, Zeng G, Chen A, Huang Z, Shi J, Peng M, Huang T, Hu L. Enhanced removal performance for methylene blue by kaolin with graphene oxide modification. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2018.04.013] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
58
|
León O, Muñoz-Bonilla A, Soto D, Pérez D, Rangel M, Colina M, Fernández-García M. Removal of anionic and cationic dyes with bioadsorbent oxidized chitosans. Carbohydr Polym 2018; 194:375-383. [DOI: 10.1016/j.carbpol.2018.04.072] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 04/16/2018] [Accepted: 04/17/2018] [Indexed: 01/11/2023]
|
59
|
Kaushal S, Badru R, Kumar S, Kaur H, Singh P. Efficient Removal of Cationic and Anionic Dyes from Their Binary Mixtures by Organic–Inorganic Hybrid Material. J Inorg Organomet Polym Mater 2018. [DOI: 10.1007/s10904-018-0817-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
|
60
|
Sun S, Diao P, Feng C, Ungureanu EM, Tang Y, Hu B, Hu Q. Nickel-foam-supported β-Ni(OH)2 as a green anodic catalyst for energy efficient electrooxidative degradation of azo-dye wastewater. RSC Adv 2018; 8:19776-19785. [PMID: 35540961 PMCID: PMC9080785 DOI: 10.1039/c8ra03039a] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 05/11/2018] [Indexed: 11/21/2022] Open
Abstract
Electrochemical oxidative degradation (EOD) is a particularly promising technique for removing organic pollutants from wastewater. However, due to the high overpotential of EOD in conventional anode materials, the energy cost of EOD is usually very high, which greatly promotes the search for highly active, stable, and energy-efficient anodic catalysts. Herein, we demonstrated that nickel-foam-supported (NF-supported) β-Ni(OH)2 (NF/β-Ni(OH)2) prepared via a facile hydrothermal method could be used as an energy efficient anode for EOD. The as-prepared 3D porous NF/β-Ni(OH)2 exhibited high activity toward the electrochemical oxidation of methyl orange (MO) in the low potential region (<1.07 V vs. SCE). This property differs greatly from those of the conventional anode materials that require a high positive potential to keep them active for EOD, making NF/β-Ni(OH)2 an energy-efficient and active anode material for EOD. With an oxidation current density of 0.25 mA cm−2, the decolorization of MO was completed within 30 min, and the COD removal after 3h of reaction was 63.0%. The normalized energy consumption for the 3 h degradation of MO was 22.2 kW h (kg COD)−1, which is only a fraction of (or even one tenth of) the values reported in the literature. Moreover, NF/β-Ni(OH)2 had a good stability and recyclability for EOD. No activity decay was observed during 10 h of EOD and the COD removal remained almost unchanged after four consecutive reaction cycles. We demonstrated experimentally that the NF/β-Ni(OH)2 anode could generate large amounts of hydroxyl radicals and that the oxidation of MO by hydroxyl radicals was the main mechanism during EOD. We believe that this work opens a new avenue for developing highly active and energy-efficient anode materials that can work in the low potential region for EOD. A novel NF/β-Ni(OH)2 catalyst for energy efficient electrochemical degradation of methyl orange was fabricated via a facile hydrothermal method.![]()
Collapse
Affiliation(s)
- Shan Sun
- School of Materials Science and Engineering
- Beihang University
- Beijing 100191
- P. R. China
| | - Peng Diao
- School of Materials Science and Engineering
- Beihang University
- Beijing 100191
- P. R. China
| | - Cuiyun Feng
- School of Materials Science and Engineering
- Beihang University
- Beijing 100191
- P. R. China
| | - Eleonora-Mihaela Ungureanu
- Department of Physical Chemistry and Electrochemistry
- Faculty of Applied Chemistry and Materials Science
- University Politehnica of Bucharest
- Romania
| | - Yi Tang
- Southern University of Science and Technology
- Shenzhen
- P. R. China
| | - Bin Hu
- Southern University of Science and Technology
- Shenzhen
- P. R. China
| | - Qing Hu
- Southern University of Science and Technology
- Shenzhen
- P. R. China
| |
Collapse
|
61
|
Evaluation of Fe 3 O 4 @MnO 2 core-shell magnetic nanoparticles as an adsorbent for decolorization of methylene blue dye in contaminated water: Synthesis and characterization, kinetic, equilibrium, and thermodynamic studies. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.07.100] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
62
|
Saturated Resin Ectopic Regeneration by Non-Thermal Dielectric Barrier Discharge Plasma. Catalysts 2017. [DOI: 10.3390/catal7120362] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
|
63
|
Mian F, Bottaro G, Rancan M, Pezzato L, Gombac V, Fornasiero P, Armelao L. Bi 12O 17Cl 2/(BiO) 2CO 3 Nanocomposite Materials for Pollutant Adsorption and Degradation: Modulation of the Functional Properties by Composition Tailoring. ACS OMEGA 2017; 2:6298-6308. [PMID: 31457238 PMCID: PMC6645116 DOI: 10.1021/acsomega.7b01125] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 09/21/2017] [Indexed: 06/01/2023]
Abstract
Bi12O17Cl2/(BiO)2CO3 nanocomposite materials were studied as bifunctional systems for depuration of wastewater. They are able to efficiently adsorb and decompose rhodamine B (RhB) and methyl orange (MO), used as model pollutants. Bi12O17Cl2/(BiO)2CO3 nanocomposites were synthesized at room temperature and ambient pressure by means of controlled hydrolysis of BiCl3 in the presence of a surfactant (Brij 76). Cold treatments of the pristine samples with UV light or thermal annealing at different temperatures (370-500 °C) and atmospheres (air, Ar/30% O2) were adopted to modulate the relative amounts of Bi12O17Cl2/(BiO)2CO3 and hence the morphology, surface area, ζ-potential, optical absorption in the visible range, and the adsorption/degradation of pollutants. The best performance was achieved by (BiO)2CO3-rich samples, which adsorbed 80% of MO and decomposed the remaining 20% by visible light photocatalysis. Irrespective of the dye, all of the samples were able to almost complete the adsorption step within 10 min contact time. Bi12O17Cl2-rich composite materials displayed a lower adsorption ability, but thanks to the stronger absorption in the visible range they behaved as more effective photocatalysts. The obtained results evidenced the ability of the employed strategy to modulate sample properties in a wide range, thus pointing out the effectiveness of this approach for the synthesis of multifunctional inorganic materials for environmental remediation.
Collapse
Affiliation(s)
- Federica Mian
- ICMATE-CNR and INSTM, c/o Department
of Chemical Sciences, University of Padova, Via F. Marzolo 1, 35131 Padova, Italy
| | - Gregorio Bottaro
- ICMATE-CNR and INSTM, c/o Department
of Chemical Sciences, University of Padova, Via F. Marzolo 1, 35131 Padova, Italy
| | - Marzio Rancan
- ICMATE-CNR and INSTM, c/o Department
of Chemical Sciences, University of Padova, Via F. Marzolo 1, 35131 Padova, Italy
| | - Luigi Pezzato
- Department of Chemical Sciences, University
of Padova, Via F. Marzolo
1, 35131 Padova, Italy
| | - Valentina Gombac
- Department
of Chemical and Pharmaceutical Sciences, ICCOM-CNR Trieste Research
Unit and INSTM, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Paolo Fornasiero
- Department
of Chemical and Pharmaceutical Sciences, ICCOM-CNR Trieste Research
Unit and INSTM, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Lidia Armelao
- ICMATE-CNR and INSTM, c/o Department
of Chemical Sciences, University of Padova, Via F. Marzolo 1, 35131 Padova, Italy
- Department of Chemical Sciences, University
of Padova, Via F. Marzolo
1, 35131 Padova, Italy
| |
Collapse
|
64
|
Tahir U, Sohail S, Khan UH. Concurrent uptake and metabolism of dyestuffs through bio-assisted phytoremediation: a symbiotic approach. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:22914-22931. [PMID: 28875431 DOI: 10.1007/s11356-017-0029-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Accepted: 08/24/2017] [Indexed: 06/07/2023]
Abstract
Manipulation of bio-technological processes in treatment of dyestuffs has attracted considerable attention, because a large proportion of these synthetic dyes enter into natural environment during synthesis and dyeing operations that contaminates different ecosystems. Moreover, these dyestuffs are toxic and difficult to degrade because of their synthetic origin, durability, and complex aromatic molecular structures. Hence, bio-assisted phytoremediation has recently emerged as an innovative cleanup approach in which microorganisms and plants work together to transform xenobiotic dyestuffs into nontoxic or less harmful products. This manuscript will focus on competence and potential of plant-microbe synergistic systems for treatment of dyestuffs, their mixtures and real textile effluents, and effects of symbiotic relationship on plant performances during remediation process and will highlight their metabolic activities during bio-assisted phytodegradation and detoxification.
Collapse
Affiliation(s)
- Uruj Tahir
- Department of Environmental Sciences, Fatima Jinnah Women University, Rawalpindi, 46000, Pakistan.
| | - Sana Sohail
- Department of Environmental Sciences, Fatima Jinnah Women University, Rawalpindi, 46000, Pakistan
| | - Umair Hassan Khan
- Department of Microbiology, University of Agriculture Faisalabad, Sub-Campus, Toba Tek Singh, Pakistan
| |
Collapse
|
65
|
Lalita, Singh AP, Sharma RK. Selective sorption of Fe(II) ions over Cu(II) and Cr(VI) ions by cross-linked graft copolymers of chitosan with acrylic acid and binary vinyl monomer mixtures. Int J Biol Macromol 2017; 105:1202-1212. [PMID: 28757421 DOI: 10.1016/j.ijbiomac.2017.07.163] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 06/25/2017] [Accepted: 07/26/2017] [Indexed: 01/31/2023]
Abstract
Low-cost and environment-friendly polymeric adsorbents for sorption of heavy metal ions were synthesized by simultaneous graft copolymerization and cross-linking of acrylic acid alone and with comonomers glycidyl methacrylate, acrylamide and acrylonitrile onto chitosan using free radical initiator and cross-linker in aqueous medium. Structural aspects of cross-linked graft copolymers have been characterized by FTIR, SEM, TGA/DTA, XRD and swelling behavior at pH 2.2, 7.0 and 9.4. An attempt has been made to study sorption of Cr(VI), Cu(II) and Fe(II) ions on cross-linked graft copolymers by equilibration method and to establish a relationship between structural aspects of graft copolymers and metal ion uptake efficiency and selectivity. Solutions of individual ions were used for non-competitive sorption onto synthesized bio-adsorbents as a function of change in contact time, temperature, pH and metal ion concentration in feed. Competitive sorption investigation was performed from an aqueous solution of ternary metal ions by batch equilibration at 25°C and at 7.0pH. Cross-linked graft copolymers showed better results than unmodified chitosan and showed preferential sorption of Fe(II) ions than Cu(II) and Cr(VI) ions.
Collapse
Affiliation(s)
- Lalita
- IK Gujral Punjab Technical University, Kapurthala, Punjab, 144601 India; University Institute of Sciences, Chemistry Department, Chandigarh University, Gharuan, Mohali, Punjab, 140413 India
| | - Anirudh P Singh
- IK Gujral Punjab Technical University, Kapurthala, Punjab, 144601 India
| | - Rajeev Kr Sharma
- Department of Chemistry, DAV College, Jalandhar, Punjab, 144008 India.
| |
Collapse
|
66
|
Blanco L, Hermosilla D, Negro C, Swinnen N, Prieto D, Blanco Á. Assessing demineralization treatments for PVC effluent reuse in the resin polymerization step. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:16631-16638. [PMID: 28555399 DOI: 10.1007/s11356-017-9217-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 05/08/2017] [Indexed: 06/07/2023]
Abstract
To reduce fresh water consumption in a polyvinyl chloride (PVC) plant, the effluent from a biological treatment must be demineralized to be re-used in the resin polymerization process. Demineralization is a critical process, since the quality and the stability of the PVC resins are highly influenced by the water quality used in the process. The main target values for water parameters are the following: conductivity <10 μScm-1, TOC < 10 mg L-1, and Al < 0.1 mg L-1. To achieve this quality, several reverse osmosis membranes from different materials and suppliers were tested and compared in the demineralization treatment. Polyamide membranes showed higher salt rejection compared to cellulose acetate membranes yielding both types similar flux and permeability. Two-pass reverse osmosis treatment was necessary to reach conductivities lower than 10 μS cm-1. On the other hand, a good quality effluent for reuse was obtained by combining RO and ionic exchange resins. Results showed that good quality PVC resins in terms of color, granulometry, porosity, and bulk density were obtained when demineralized water from two-pass reverse osmosis was used as fresh water, proving the feasibility of the effluent reuse in the PVC industry.
Collapse
Affiliation(s)
- Laura Blanco
- Departamento de Ingeniería Química, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040, Madrid, Spain
| | - Daphne Hermosilla
- Departamento de Ingeniería Química, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040, Madrid, Spain
- Departamento de Ingeniería Agrícola y Forestal, Escuela de Ingeniería de la Industria Forestal, Agronómica y de la Bioenergía, Campus Duques de Soria, Universidad de Valladolid, 42004, Soria, Spain
| | - Carlos Negro
- Departamento de Ingeniería Química, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040, Madrid, Spain
| | - Nathalie Swinnen
- Solvay, Research and Innovation, Environment Lab, Rue de Ransbeek 310, 1120, Brussels, Belgium
| | - David Prieto
- INOVYN Spain, Marie Curie 1, 3, 5, 08760, Martorell, Spain
| | - Ángeles Blanco
- Departamento de Ingeniería Química, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040, Madrid, Spain.
| |
Collapse
|
67
|
Liu S, Yao F, Oderinde O, Zhang Z, Fu G. Green synthesis of oriented xanthan gum-graphene oxide hybrid aerogels for water purification. Carbohydr Polym 2017; 174:392-399. [PMID: 28821084 DOI: 10.1016/j.carbpol.2017.06.044] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 06/12/2017] [Accepted: 06/12/2017] [Indexed: 10/19/2022]
Abstract
Three-dimensional xanthan gum (XG)/graphene oxide (GO) hybrid aerogels were fabricated by ice crystal templating without using chemical modifiers. The hybrid aerogels were prepared by the stirring of xanthan gum-graphene oxide hybrid solution, followed by freezing at low temperature and finally by freeze-drying. The whole preparation could be completed within 12h without producing any contamination and thus considered a fast, simple, economical, and green method for aerogel fabrication. XG/GO hybrid aerogels possessed different hierarchical pore structures because of various freezing temperatures. A network composed of co-aligned pore channels was obtained at a freezing temperature of -40°C. The as-prepared hybrid aerogels exhibited stability and excellent adsorption capacity for organic dyes and heavy metal ions. Therefore, these aerogels could be used as efficient adsorbents in water purification. This study provided a basis for the cost-effective and large-scale commercial production of high-performance graphene oxide-based aerogels for water purification.
Collapse
Affiliation(s)
- Shunli Liu
- School of Chemistry and Chemical Engineering, Southeast University, Jiangning District, Nanjing, Jiangsu Province, 211189, China
| | - Fang Yao
- School of Chemistry and Chemical Engineering, Southeast University, Jiangning District, Nanjing, Jiangsu Province, 211189, China
| | - Olayinka Oderinde
- School of Chemistry and Chemical Engineering, Southeast University, Jiangning District, Nanjing, Jiangsu Province, 211189, China
| | - Zhihong Zhang
- Henan Provincial Key Laboratory of Surface and Interface Science, Zhengzhou University of Light Industry, No. 166, Science Avenue, Zhengzhou, Henan Province, 45000, China.
| | - Guodong Fu
- School of Chemistry and Chemical Engineering, Southeast University, Jiangning District, Nanjing, Jiangsu Province, 211189, China.
| |
Collapse
|
68
|
A novel strategy for the removal of rhodamine B (RhB) dye from wastewater by coal-based carbon membranes coupled with the electric field. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2017.02.014] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
69
|
|
70
|
Shang K, Wang X, Li J, Wang H, Jiang N, Lu N, Wu Y. Effect of Persulfate on the Degradation of Acid Orange 7 (AO7) by Dielectric Barrier Discharge Plasma. Top Catal 2017. [DOI: 10.1007/s11244-017-0762-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
71
|
Sharma J, Chadha AS, Pruthi V, Anand P, Bhatia J, Kaith BS. Sequestration of dyes from artificially prepared textile effluent using RSM-CCD optimized hybrid backbone based adsorbent-kinetic and equilibrium studies. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2017; 190:176-187. [PMID: 28049087 DOI: 10.1016/j.jenvman.2016.12.065] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 10/28/2016] [Accepted: 12/26/2016] [Indexed: 06/06/2023]
Abstract
Present work reports the synthesis of semi-Interpenetrating Network Polymer (semi-IPN) using Gelatin-Gum xanthan hybrid backbone and polyvinyl alcohol in presence of l-tartaric acid and ammonium persulphate as the crosslinker-initiator system. Reaction parameters were optimized with Response Surface Methodology (RSM) in order to maximize the percent gel fraction of the synthesized sample. Polyvinyl alcohol, l-Tartaric acid, ammonium persulphate, reaction temperature, time and pH of the reaction medium were found to make an impact on the percentage gel fraction obtained. Incorporation of polyvinyl alcohol chains onto hybrid backbone and crosslinking between the different polymer chains were confirmed through techniques like FTIR, SEM-EDX and XRD. Semi-IPN was found to be very efficient in the removal of cationic dyes rhodamine-B (70%) and auramine-O (63%) from a mixture with an adsorbent dose of 700 mg, initial concentration of rhodamine-B 6 mgL-1 and auramine-O 26 mgL-1, at an time interval of 22-25 h and 30 °C temp. Further to determine the nature of adsorption Langmuir and Freundlich adsorption isotherm models were studied and it was found that Langmuir adsorption isotherm was the best fit model for the removal of mixture of dyes. Kinetic studies for the sorption of dyes favored the reaction mechanism to occur via a pseudo second order pathway with R2 value about 0.99.
Collapse
Affiliation(s)
- Jitender Sharma
- Research and Development Laboratory, Department of Chemistry, Dr B.R. Ambedkar National Institute of Technology, Jalandhar, Punjab, India.
| | - Amritpal Singh Chadha
- Research and Development Laboratory, Department of Chemistry, Dr B.R. Ambedkar National Institute of Technology, Jalandhar, Punjab, India.
| | - Vaishali Pruthi
- Research and Development Laboratory, Department of Chemistry, Dr B.R. Ambedkar National Institute of Technology, Jalandhar, Punjab, India.
| | - Prerna Anand
- Research and Development Laboratory, Department of Chemistry, Dr B.R. Ambedkar National Institute of Technology, Jalandhar, Punjab, India.
| | - Jaspreet Bhatia
- Department of Chemistry, D.A.V College, Jalandhar, Punjab, India.
| | - B S Kaith
- Research and Development Laboratory, Department of Chemistry, Dr B.R. Ambedkar National Institute of Technology, Jalandhar, Punjab, India.
| |
Collapse
|
72
|
Mook WT, Aroua MK, Szlachta M, Lee CS. Optimisation of Reactive Black 5 dye removal by electrocoagulation process using response surface methodology. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2017; 75:952-962. [PMID: 28234295 DOI: 10.2166/wst.2016.563] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this work, a regression model obtained from response surface methodology (RSM) was proposed for the electrocoagulation (EC) treatment of textile wastewater. The Reactive Black 5 dye (RB5) was used as a model dye to evaluate the performance of the model design. The effect of initial solution pH, applied current and treatment time on RB5 removal was investigated. The total number of experiments designed by RSM amounted to 27 runs, including three repeated experimental runs at the central point. The accuracy of the model was evaluated by the F-test, coefficient of determination (R2), adjusted R2 and standard deviation. The optimum conditions for RB5 removal were as follows: initial pH of 6.63, current of 0.075 A, electrolyte dose of 0.11 g/L and EC time of 50.3 min. The predicted RB5 removal was 83.3% and the percentage error between experimental and predicted results was only 3-5%. The obtained data confirm that the proposed model can be used for accurate prediction of RB5 removal. The value of the zeta potential increased with treatment time, and the X-ray diffraction pattern shows that iron complexes were found in the sludge.
Collapse
Affiliation(s)
- W T Mook
- Department of Chemical Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia E-mail:
| | - M K Aroua
- Department of Chemical Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia E-mail:
| | - M Szlachta
- Department of Environmental Engineering, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, Wrocław 50-370, Poland
| | - C S Lee
- Department of Chemical Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia E-mail:
| |
Collapse
|
73
|
Lu T, Wang L, He Y, Chen J, Wang RM. Loess surface grafted functional copolymer for removing basic fuchsin. RSC Adv 2017. [DOI: 10.1039/c7ra00610a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Loess clay (LC), a very abundant clay with granules and high hydrophilicity, was modified by surface grafting copolymerization of acrylate and styrene monomers with functional side groups, which afforded a LC surface grafting copolymer.
Collapse
Affiliation(s)
- Tingjun Lu
- Key Lab. Eco-Environment-Related Polymer Materials of Ministry of Education
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou 730070
- China
| | - Li Wang
- Key Lab. Eco-Environment-Related Polymer Materials of Ministry of Education
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou 730070
- China
| | - Yufeng He
- Key Lab. Eco-Environment-Related Polymer Materials of Ministry of Education
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou 730070
- China
| | - Jing Chen
- Key Lab. Eco-Environment-Related Polymer Materials of Ministry of Education
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou 730070
- China
| | - Rong-Min Wang
- Key Lab. Eco-Environment-Related Polymer Materials of Ministry of Education
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou 730070
- China
| |
Collapse
|
74
|
Wu Q, Zhang H, Zhou L, Bao C, Zhu H, Zhang Y. Synthesis and application of rGO/CoFe 2 O 4 composite for catalytic degradation of methylene blue on heterogeneous Fenton-like oxidation. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2016.08.004] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
75
|
Sun Y, Liu Y, Li R, Xue G, Ognier S. Degradation of reactive blue 19 by needle-plate non-thermal plasma in different gas atmospheres: Kinetics and responsible active species study assisted by CFD calculations. CHEMOSPHERE 2016; 155:243-249. [PMID: 27124311 DOI: 10.1016/j.chemosphere.2016.04.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2015] [Revised: 02/13/2016] [Accepted: 04/07/2016] [Indexed: 06/05/2023]
Abstract
This study investigated the degradation of a model organic compound, reactive blue (RB-19), in aqueous solution using a needle-plate non-thermal plasma (NTP) reactor, which was operated using three gas atmospheres (Ar, air, O2) at room temperature and atmospheric pressure. The relative discharge and degradation parameters, including the peak to peak applied voltage, power, ozone generation, pH, decolorization rates, energy density and the total organic carbon (TOC) reduction were analyzed to determine the various dye removal efficiencies. The decolorization rate for Ar, air and O2 were 59.9%, 49.6% and 89.8% respectively at the energy density of 100 kJ/L. The best TOC reduction was displayed by Ar with about 8.8% decrease, and 0% with O2 and air atmospheres. This phenomenon could be explained by the formation of OH• and O3 in the Ar and O2 atmospheres, which are responsible for increased mineralization and efficient decolorization. A one-dimension model was developed using software COMSOL to simulate the RB-19-ozone reaction and verify the experiments by comparing the simulated and experimental results. It was determined that ozone plays the most important role in the dye removal process, and the ozone contribution rate ranged from 0.67 to 0.82.
Collapse
Affiliation(s)
- Yu Sun
- School of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China
| | - Yanan Liu
- School of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China.
| | - Rui Li
- School of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China
| | - Gang Xue
- School of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China
| | - Stéphanie Ognier
- UPMC Univ Paris 06, EA 3492, Laboratoire de Génie des Procédés et Traitements de Surface, 11 rue Pierre et Marie Curie, 75005 Paris, France
| |
Collapse
|
76
|
Kong D, Zheng X, Tao Y, Lv W, Gao Y, Zhi L, Yang QH. Porous graphene oxide-based carbon artefact with high capacity for methylene blue adsorption. ADSORPTION 2016. [DOI: 10.1007/s10450-016-9798-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
77
|
Lv JL, Zhai SR, Fan Y, Lei ZM, An QD. Preparation of β-CD and Fe3O4 integrated multifunctional bioadsorbent for highly efficient dye removal from water. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2016.02.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
78
|
Xu M, Wang Z, Wang F, Hong P, Wang C, Ouyang X, Zhu C, Wei Y, Hun Y, Fang W. Fabrication of cerium doped Ti/nanoTiO2/PbO2 electrode with improved electrocatalytic activity and its application in organic degradation. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.03.168] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
79
|
Kumar M, Tamilarasan R, Arthanareeswaran G, Ismail AF. Optimization of methylene blue using Ca(2+) and Zn(2+) bio-polymer hydrogel beads: A comparative study. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2015; 121:164-173. [PMID: 25913699 DOI: 10.1016/j.ecoenv.2015.04.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Revised: 04/06/2015] [Accepted: 04/08/2015] [Indexed: 06/04/2023]
Abstract
Recently noted that the methylene blue cause severe central nervous system toxicity. It is essential to optimize the methylene blue from aqueous environment. In this study, a comparison of an optimization of methylene blue was investigated by using modified Ca(2+) and Zn(2+) bio-polymer hydrogel beads. A batch mode study was conducted using various parameters like time, dye concentration, bio-polymer dose, pH and process temperature. The isotherms, kinetics, diffusion and thermodynamic studies were performed for feasibility of the optimization process. Freundlich and Langmuir isotherm equations were used for the prediction of isotherm parameters and correlated with dimensionless separation factor (RL). Pseudo-first order and pseudo-second order Lagegren's kinetic equations were used for the correlation of kinetic parameters. Intraparticle diffusion model was employed for diffusion of the optimization process. The Fourier Transform Infrared Spectroscopy (FTIR) shows different absorbent peaks of Ca(2+) and Zn(2+) beads and the morphology of the bio-polymer material analyzed with Scanning Electron Microscope (SEM). The TG & DTA studies show that good thermal stability with less humidity without production of any non-degraded products.
Collapse
Affiliation(s)
- M Kumar
- Department of Chemistry, Anna University Chennai, University College of Engineering, Pattukottai, Rajamadam 614701, Tamilnadu, India
| | - R Tamilarasan
- Department of Chemistry, Anna University Chennai, University College of Engineering, Pattukottai, Rajamadam 614701, Tamilnadu, India.
| | - G Arthanareeswaran
- Membrane Research Laboratory, Department of Chemical Engineering, National Institute of Technology-Tiruchirapalli, Tiruchirapalli, 620015, India.
| | - A F Ismail
- Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia.
| |
Collapse
|
80
|
Peng L, Zeng Q, Tie B, Lei M, Yang J, Luo S, Song Z. Manganese Dioxide nanosheet suspension: A novel absorbent for Cadmium(II) contamination in waterbody. J Colloid Interface Sci 2015; 456:108-15. [DOI: 10.1016/j.jcis.2015.06.017] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 05/23/2015] [Accepted: 06/11/2015] [Indexed: 11/27/2022]
|
81
|
Qi J, Li X, Zheng H, Li P, Wang H. Simultaneous removal of methylene blue and copper(II) ions by photoelectron catalytic oxidation using stannic oxide modified iron(III) oxide composite electrodes. JOURNAL OF HAZARDOUS MATERIALS 2015; 293:105-111. [PMID: 25855567 DOI: 10.1016/j.jhazmat.2015.03.059] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Revised: 03/25/2015] [Accepted: 03/27/2015] [Indexed: 06/04/2023]
Abstract
Stannic oxide modified Fe(III) oxide composite electrodes (SnO2/Fe2O3) were synthesized for simultaneously removing methylene blue (MB) and Cu(II) from wastewater using photoelectron catalytic oxidation (PEO). The SnO2/Fe2O3 electrodes were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), and photoelectrochemical techniques. The removal of MB and Cu(II) by PEO using the SnO2/Fe2O3 composite electrodes was studied in terms of reaction time, electric current density, and pH of the electrolyte. The kinetics of the reactions were investigated using batch assays. The optimal reaction time, pH, and electric current density of the PEO process were determined to be 30 min, 6.0, and 10 mA/cm(2), respectively. The removal rates of MB from wastewater treated by PEO and electron catalytic oxidation process were 84.87% and 70.64%, respectively, while the recovery rates of Cu(II) were 91.75% and 96.78%, respectively. The results suggest that PEO is an effective method for the simultaneous removal of MB and Cu(II) from wastewater, and the PEO process exhibits a much higher removal rate for MB and Cu(II) compared to the electron catalytic oxidation process. Furthermore, the removal of MB was found to follow the Langmuir-Freundlich-Hinshelwood kinetic model, whereas the removal of Cu(II) fitted well to the first-order reaction model.
Collapse
Affiliation(s)
- Jinqiu Qi
- College of Water Conservancy and Civil Engineering, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Xiaochen Li
- College of Water Conservancy and Civil Engineering, Shandong Agricultural University, Tai'an, Shandong 271018, PR China.
| | - Hao Zheng
- College of Water Conservancy and Civil Engineering, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Peiqiang Li
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Huying Wang
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| |
Collapse
|
82
|
The enhanced removal of cationic dyes in binary system using novel copolymers with two kinds of acidic groups. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.03.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
83
|
Yang X, Li Y, Du Q, Sun J, Chen L, Hu S, Wang Z, Xia Y, Xia L. Highly effective removal of basic fuchsin from aqueous solutions by anionic polyacrylamide/graphene oxide aerogels. J Colloid Interface Sci 2015; 453:107-114. [PMID: 25978557 DOI: 10.1016/j.jcis.2015.04.042] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 04/13/2015] [Accepted: 04/19/2015] [Indexed: 11/18/2022]
Abstract
Novel anionic polyacrylamide/graphene oxide aerogels were prepared by a freeze drying method and used to remove basic fuchsin from aqueous solutions. These aerogels were sponge-like solid with lightweight, fluffy and porous structure. The batch adsorption experiments were carried out to study the effect of various parameters, such as the solution pH, adsorbent dose, contact time and temperature on adsorption properties of basic fuchsin onto anionic polyacrylamide/graphene oxide aerogels. The kinetics of adsorption corresponded to the pseudo-second-order kinetic model. The Langmuir adsorption isotherm was suitable to describe the equilibrium adsorption process. The maximum adsorption capacity was up to 1034.3 mg/g, which indicated that anionic polyacrylamide/graphene oxide aerogels were promising adsorbents for removing dyes pollutants from aqueous solution.
Collapse
Affiliation(s)
- Xiaoxia Yang
- Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, College of Electromechanical Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China; College of Textile, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
| | - Yanhui Li
- Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, College of Electromechanical Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
| | - Qiuju Du
- Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, College of Electromechanical Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Jiankun Sun
- Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, College of Electromechanical Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Long Chen
- Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, College of Electromechanical Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Song Hu
- Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, College of Electromechanical Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Zonghua Wang
- Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, College of Electromechanical Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Yanzhi Xia
- Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, College of Electromechanical Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Linhua Xia
- Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, College of Electromechanical Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| |
Collapse
|
84
|
Song YB, Song XD, Cheng CJ, Zhao ZG. Poly(4-styrenesulfonic acid-co-maleic acid)-sodium-modified magnetic reduced graphene oxide for enhanced adsorption performance toward cationic dyes. RSC Adv 2015. [DOI: 10.1039/c5ra18255g] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
PSSMA-modified magnetic reduced graphene oxide nanocomposites (PSSMA/M-rGO) were prepared and used for enhanced adsorption of cationic dyes.
Collapse
Affiliation(s)
- Yu-Bei Song
- College of Chemistry and Environment Protection Engineering
- Southwest University for Nationalities
- Chengdu
- P. R. China
| | - Xiao-Dong Song
- College of Chemistry and Environment Protection Engineering
- Southwest University for Nationalities
- Chengdu
- P. R. China
| | - Chang-Jing Cheng
- College of Chemistry and Environment Protection Engineering
- Southwest University for Nationalities
- Chengdu
- P. R. China
| | - Zhi-Gang Zhao
- College of Chemistry and Environment Protection Engineering
- Southwest University for Nationalities
- Chengdu
- P. R. China
| |
Collapse
|
85
|
Preparation of 3D PbO 2 nanospheres@SnO 2 nanowires/Ti Electrode and Its Application in Methyl Orange Degradation. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.08.150] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
86
|
Yan J, Huang Y, Miao YE, Tjiu WW, Liu T. Polydopamine-coated electrospun poly(vinyl alcohol)/poly(acrylic acid) membranes as efficient dye adsorbent with good recyclability. JOURNAL OF HAZARDOUS MATERIALS 2014; 283:730-739. [PMID: 25464316 DOI: 10.1016/j.jhazmat.2014.10.040] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Revised: 10/17/2014] [Accepted: 10/26/2014] [Indexed: 06/04/2023]
Abstract
Free-standing poly(vinyl alcohol)/poly(acrylic acid) (PVA/PAA) membranes with polydopamine (PDA) coating were prepared based on the combination of electrospinning and self-polymerization of dopamine. This is a facile, mild, controllable, and low-energy consumption process without any rigorous restriction to reactive conditions. Benefiting from the high specific surface area of electrospun membranes and the abundant "adhesive" functional groups of polydopamine, the as-prepared membranes exhibit efficient adsorption performance towards methyl blue with the adsorption capacity reaching up to 1147.6 mg g(-1). Moreover, compared to other nanoparticle adsorbents, the as-prepared self-standing membrane is highly flexible, easy to operate and retrieve, and most importantly, easy to elute, and regenerate, which enable its potential applications in wastewater treatment.
Collapse
Affiliation(s)
- Jiajie Yan
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, PR China
| | - Yunpeng Huang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, PR China
| | - Yue-E Miao
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, PR China
| | - Weng Weei Tjiu
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link, 117602, Singapore
| | - Tianxi Liu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, PR China.
| |
Collapse
|
87
|
Dharnaik AS, Ghosh PK. Hexavalent chromium [Cr(VI)] removal by the electrochemical ion-exchange process. ENVIRONMENTAL TECHNOLOGY 2014; 35:2272-2279. [PMID: 25145180 DOI: 10.1080/09593330.2014.902108] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In the present investigation, the performance of a laboratory-scale plate and frame-type electrochemical ion-exchange (EIX) cell on removal ofhexavalent chromium from synthetic wastewater containing 5 mg/l of Cr(VI) was evaluated under varying applied voltages. Ruthenium dioxide-coated titanium plate (RuO2/Ti) was used as anode and stainless steel plates as cathode. The EIX cell was run at different hydraulic retention time (HRT). Before using in the electrochemical cell, the capacity of ion-exchange resin was evaluated through kinetic and isotherm equilibrium tests in batch mode. The batch kinetic study result showed that the equilibrium time for effective ion exchange with resin is 2 h. The isotherm equilibrium data fit well to both Freundlich and Langmuir isotherms. Maximum capacity (qm) of resin calculated from Langmuir isotherm was 71.42 mg/g. Up to 99% of chromium removal was noticed in the EIX cell containing fresh resin at applied voltages of 10 V and higher. Migration of chromium ion to anode chamber was not noticed while performing the experiment with fresh resin. As high as 50% removal of chromium was observed from the middle chamber containing exhausted resin at an applied voltage of 25 V when the influent flow rate was maintained at 45 min of HRT. The performance of the reactor was increased to 72% when the influent flow rate was decreased to maintain at 90 min of HRT. Build-up of chromium in the anode chamber took place when exhausted resin was used in the process.
Collapse
|
88
|
Fan J, Li H, Shuang C, Li W, Li A. Dissolved organic matter removal using magnetic anion exchange resin treatment on biological effluent of textile dyeing wastewater. J Environ Sci (China) 2014; 26:1567-1574. [PMID: 25108712 DOI: 10.1016/j.jes.2014.05.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2013] [Revised: 12/30/2013] [Accepted: 12/31/2013] [Indexed: 06/03/2023]
Abstract
This study investigated the removal of dissolved organic matter (DOM) from real dyeing bio-treatment effluents (DBEs) with the use of a novel magnetic anion exchange resin (NDMP). DOMs in two typical DBEs were fractionized using DAX-8/XAD-4 resin and ultrafiltration membranes. The hydrophilic fractions and the low molecular weight (MW) (<3kDa) DOM fractions constituted a major portion (>50%) of DOMs for the two effluents. The hydrophilic and low MW fractions of both effluents were the greatest contributors of specific UV254 absorbance (SUVA254), and the SUVA254 of DOM fractions decreased with hydrophobicity and MW. Two DBEs exhibited acute and chronic biotoxicities. Both acute and chronic toxicities of DOM fractions increased linearly with the increase of SUVA254 value. Kinetics of dissolved organic carbon (DOC) removal via NDMP treatment was performed by comparing it with that of particle active carbon (PAC). Results indicated that the removal of DOC from DBEs via NDMP was 60%, whereas DOC removals by PAC were lower than 15%. Acidic organics could be significantly removed with the use of NDMP. DOM with large MW in DBE could be removed significantly by using the same means. Removal efficiency of NDMP for DOM decreased with the decrease of MW. Compared with PAC, NDMP could significantly reduce the acute and chronic bio-toxicities of DBEs. NaCl/NaOH mixture regenerants, with selected concentrations of 10% NaCl (m/m)/1% NaOH (m/m), could improve desorption efficiency.
Collapse
Affiliation(s)
- Jun Fan
- State Key Laboratory of Pollution Control and Resource Reuse, Collaborative Innovation Center for Advanced Water Pollution Control Technology and Equipment, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Haibo Li
- State Key Laboratory of Pollution Control and Resource Reuse, Collaborative Innovation Center for Advanced Water Pollution Control Technology and Equipment, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Chendong Shuang
- State Key Laboratory of Pollution Control and Resource Reuse, Collaborative Innovation Center for Advanced Water Pollution Control Technology and Equipment, School of the Environment, Nanjing University, Nanjing 210023, China.
| | - Wentao Li
- State Key Laboratory of Pollution Control and Resource Reuse, Collaborative Innovation Center for Advanced Water Pollution Control Technology and Equipment, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Aimin Li
- State Key Laboratory of Pollution Control and Resource Reuse, Collaborative Innovation Center for Advanced Water Pollution Control Technology and Equipment, School of the Environment, Nanjing University, Nanjing 210023, China.
| |
Collapse
|
89
|
Comparative removal of two textile dyes from aqueous solution by adsorption onto marine-source waste shell: Kinetic and isotherm studies. KOREAN J CHEM ENG 2014. [DOI: 10.1007/s11814-014-0085-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
90
|
Jia W, Jia B, Qu F, Wu X. Towards a highly efficient simulated sunlight driven photocatalyst: a case of heterostructured ZnO/ZnS hybrid structure. Dalton Trans 2014; 42:14178-87. [PMID: 23942966 DOI: 10.1039/c3dt51712h] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Large scale ZnO/ZnS heterostructured microflowers are fabricated through a rapid and facile strategy via microwave-assisted in situ surface sulfidation route. The as-obtained product possesses an average diameter of about 2 μm and is composed of many thin nanowires. Through a careful inspection under various growth conditions, the morphologies of the as-prepared hybrid structures could be controlled by tailoring the concentration of thioacetamide (TAA) solution during the microwave irradiation, and a possible growth mechanism was proposed. The photocatalytic experiment results for the photodegradation of eosin B under simulated sunlight irradiation revealed that the hybrid nanostructures possess significantly higher photocatalytic activity which is about triple that of the original ZnO precursors, indicating their potential applications in organically polluted water treatment. The optimal sulfidation concentration to realize the maximum photocatalytic activity in the ZnO/ZnS hybrid structures is also proposed and discussed. Meanwhile, this facile, rapid microwave-assisted strategy is scalable and can be extended to synthesize other oxide/sulfide (MOx/MSy) heterostructures.
Collapse
Affiliation(s)
- Weina Jia
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education and College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin 150025, P. R. China.
| | | | | | | |
Collapse
|
91
|
Manekar P, Patkar G, Aswale P, Mahure M, Nandy T. Detoxifying of high strength textile effluent through chemical and bio-oxidation processes. BIORESOURCE TECHNOLOGY 2014; 157:44-51. [PMID: 24531146 DOI: 10.1016/j.biortech.2014.01.046] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2013] [Revised: 01/10/2014] [Accepted: 01/14/2014] [Indexed: 06/03/2023]
Abstract
Small-scale textile industries (SSTIs) in India struggled for the economic and environmental race. A full-scale common treatment plant (CETP) working on the principle of destabilising negative charge colloidal particles and bio-oxidation of dissolved organic failed to comply with Inland Surface Waters (ISW) standards. Thus, presence of intense colour and organics with elevated temperature inhibited the process stability. Bench scale treatability studies were conducted on chemical and biological processes for its full-scale apps to detoxify a high strength textile process effluent. Colour, SS and COD removals from the optimised chemical process were 88%, 70% and 40%, respectively. Heterotrophic bacteria oxidised COD and BOD more than 84% and 90% at a loading rate 0.0108kgm(-3)d(-1) at 3h HRT. The combined chemical and bio-oxidation processes showed a great promise for detoxifying the toxic process effluent, and implemented in full-scale CETP. The post-assessment of the CETP resulted in detoxify the toxic effluent.
Collapse
Affiliation(s)
- Pravin Manekar
- CSIR-National Environmental Engineering Research Institute, Nagpur 440 020, India.
| | - Guarav Patkar
- CSIR-National Environmental Engineering Research Institute, Nagpur 440 020, India
| | - Pawan Aswale
- CSIR-National Environmental Engineering Research Institute, Nagpur 440 020, India
| | - Manisha Mahure
- CSIR-National Environmental Engineering Research Institute, Nagpur 440 020, India
| | - Tapas Nandy
- CSIR-National Environmental Engineering Research Institute, Nagpur 440 020, India
| |
Collapse
|
92
|
Shirzad-Siboni M, Khataee A, Joo SW. Kinetics and equilibrium studies of removal of an azo dye from aqueous solution by adsorption onto scallop. J IND ENG CHEM 2014. [DOI: 10.1016/j.jiec.2013.05.023] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
93
|
Liang WJ, Chen YP, Zheng FY, Li SX. Titanium dioxide nanoparticle based solid phase extraction of trace Alizarin Violet, followed by its specrophotometric determination. Mikrochim Acta 2014. [DOI: 10.1007/s00604-014-1194-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
94
|
Wang W, Li C, Yao J, Zhang B, Zhang Y, Liu J. Rapid adsorption of neutral red from aqueous solutions by Zn3[Co(CN)6]2.nH2O nanospheres. J Mol Liq 2013. [DOI: 10.1016/j.molliq.2013.04.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
95
|
Attallah MF, Ahmed IM, Hamed MM. Treatment of industrial wastewater containing Congo Red and Naphthol Green B using low-cost adsorbent. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2013; 20:1106-16. [PMID: 22565983 DOI: 10.1007/s11356-012-0947-4] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2012] [Accepted: 04/19/2012] [Indexed: 05/15/2023]
Abstract
The present work investigates the potential use of metal hydroxides sludge (MHS) generated from hot dipping galvanizing plant for adsorption of Congo Red and Naphthol Green B dyes from aqueous solutions. Characterization of MHS included infrared and X-ray fluorescence analysis. The effect of shaking time, initial dye concentration, temperature, adsorbent dosage and pH has been investigated. The results of adsorption experiments indicate that the maximum capacity of Congo Red and Naphthol Green B dyes at equilibrium (q(e)) and percentage of removal at pH 6 are 40 mg/g, 93 %, and 10 mg/g, 52 %, respectively. Some kinetic models were used to illustrate the adsorption process of Congo Red and Naphthol Green B dyes using MHS waste. Thermodynamic parameters such as (ΔG, ΔS, and ΔH) were also determined.
Collapse
Affiliation(s)
- M F Attallah
- Hot Laboratories and Waste Management Center, Atomic Energy Authority, PO 13759, Abu Zaabal, Cairo, Egypt.
| | | | | |
Collapse
|
96
|
Bäuerlein PS, Ter Laak TL, Hofman-Caris RCHM, de Voogt P, Droge STJ. Removal of charged micropollutants from water by ion-exchange polymers -- effects of competing electrolytes. WATER RESEARCH 2012; 46:5009-5018. [PMID: 22818952 DOI: 10.1016/j.watres.2012.06.048] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2012] [Revised: 06/21/2012] [Accepted: 06/26/2012] [Indexed: 06/01/2023]
Abstract
A wide variety of environmental compounds of concern, e.g. pharmaceuticals or illicit drugs, are acids or bases that may predominantly be present as charged species in drinking water sources. These charged micropollutants may prove difficult to remove by currently used water treatment steps (e.g. UV/H(2)O(2), activated carbon (AC) or membranes). We studied the sorption affinity of some ionic organic compounds to both AC and different charged polymeric materials. Ion-exchange polymers may be effective as additional extraction phases in water treatment, because sorption of all charged compounds to oppositely charged polymers was stronger than to AC, especially for the double-charged cation metformin. Tested below 1% of the polymer ion-exchange capacity, the sorption affinity of charged micropollutants is nonlinear and depends on the composition of the aqueous medium. Whereas oppositely charged electrolytes do not impact sorption of organic ions, equally charged electrolytes do influence sorption indicating ion-exchange (IE) to be the main sorption mechanism. For the tested polymers, a tenfold increased salt concentration lowered the IE-sorption affinity by a factor two. Different electrolytes affect IE with organic ions in a similar way as inorganic ions on IE-resins, and no clear differences in this trend were observed between the sulphonated and the carboxylated cation-exchanger. Sorption of organic cations is five fold less in Ca(2+) solutions compared to similar concentrations of Na(+), while that of anionic compounds is three fold weaker in SO(4)(2-) solutions compared to equal concentrations of Cl(-).
Collapse
Affiliation(s)
- Patrick S Bäuerlein
- KWR Watercycle Research Institute, Groningenhaven 7, P.O. Box 1072, 3430 BB Nieuwegein, The Netherlands.
| | | | | | | | | |
Collapse
|
97
|
Liu Z, Wang F, Li Y, Xu T, Zhu S. Continuous electrochemical oxidation of methyl orange waste water using a three-dimensional electrode reactor. J Environ Sci (China) 2011; 23 Suppl:S70-S73. [PMID: 25084598 DOI: 10.1016/s1001-0742(11)61081-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The removal of methyl orange wastewater was experimentally investigated using a three-dimensional electrode reactor with granular activated carbon and titanium filter electrodes arrays. The effects of the electric current, the residence time and the initial dye concentration on the methyl orange removal were evaluated. For the initial concentration of 1150 mg/L, the COD removal was obtained as 90% under the conditions of electric current 2 A, residence time 40 min. The effluent path of the electrochemical cell was optimized, using the anode effluent instead of the top effluent, where the COD removal was increased to 93% and the corresponding energy consumption was decreased from 15.5 to 14.6 kW-hr/kg COD.
Collapse
Affiliation(s)
- Zhigang Liu
- School of Environmental & Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China
| | - Feifei Wang
- Department of Safety and Environmental Protection, Dalian Locomotive and Rolling Stock Co. Ltd. CNR Group, Dalian 116028, China
| | - Yansheng Li
- School of Environmental & Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China
| | - Tianlong Xu
- School of Environmental & Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China
| | - Shaomin Zhu
- School of Environmental & Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China
| |
Collapse
|
98
|
Pratarn W, Pornsiri T, Thanit S, Tawatchai C, Wiwut T. Adsorption and Ozonation Kinetic Model for Phenolic Wastewater Treatment. Chin J Chem Eng 2011. [DOI: 10.1016/s1004-9541(09)60180-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
99
|
Abdel-Halim E, Al-Deyab SS. Removal of heavy metals from their aqueous solutions through adsorption onto natural polymers. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2010.12.001] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
100
|
Chen M, Shang T, Fang W, Diao G. Study on adsorption and desorption properties of the starch grafted p-tert-butyl-calix[n]arene for butyl Rhodamine B solution. JOURNAL OF HAZARDOUS MATERIALS 2011; 185:914-921. [PMID: 21036471 DOI: 10.1016/j.jhazmat.2010.09.107] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2010] [Revised: 08/21/2010] [Accepted: 09/28/2010] [Indexed: 05/30/2023]
Abstract
The adsorbents of starch grafted p-tert-butyl-calix[4,6,8]arene-SGCn (SGC4, SGC6, SGC8) are prepared. The products are characterized by FTIR, elemental analysis, thermal gravimetric analysis and scanning electron microscope. Static adsorption behavior is studied by using SGC8 as adsorbent, butyl Rhodamine B (BRB) solution as simulation dye wastewater. The adsorption of BRB onto SGC8 fits the second order kinetic model and the apparent adsorption rate constant is 0.002 g mg(-1)min(-1) at 25 °C. The equilibrium adsorption data are interpreted using Langmuir and Freundlich models. The adsorption of BRB onto SGC8 is better represented by the Langmuir equation. The thermodynamic parameters for the adsorption reaction are calculated through van't Hoff analysis. The adsorbent may be easily regenerated by using ethanol solution as desorption agent to extract dye from SGC8. The rate of desorption of BRB is dependent on the concentration of ethanol and the temperature. SGC8 exhibits excellent adsorption and desorption properties toward dye molecule. The new-style adsorbent of SGC8 is regarded as a potential adsorbent to deal with dye or organic wastewater.
Collapse
Affiliation(s)
- Ming Chen
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, PR China
| | | | | | | |
Collapse
|