151
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Khosravi M, Azizian S. Synthesis of Fe3O4 flower-like hierarchical nanostructures with high adsorption performance toward dye molecules. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.06.049] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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152
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Ferkous H, Merouani S, Hamdaoui O, Rezgui Y, Guemini M. Comprehensive experimental and numerical investigations of the effect of frequency and acoustic intensity on the sonolytic degradation of naphthol blue black in water. ULTRASONICS SONOCHEMISTRY 2015; 26:30-39. [PMID: 25753313 DOI: 10.1016/j.ultsonch.2015.02.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Revised: 02/01/2015] [Accepted: 02/02/2015] [Indexed: 06/04/2023]
Abstract
In the present work, comprehensive experimental and numerical investigations of the effects of frequency and acoustic intensity on the sonochemical degradation of naphthol blue black (NBB) in water have been carried out. The experiments have been examined at three frequencies (585, 860 and 1140 kHz) and over a wide range of acoustic intensities. The observed experimental results have been discussed using a more realistic approach that combines the single bubble sonochemistry and the number of active bubbles. The single bubble yield has been predicted using a model that combines the bubble dynamics with chemical kinetics consisting of series of chemical reactions (73 reversible reactions) occurring inside an air bubble during the strong collapse. The experimental results showed that the sonochemical degradation rate of NBB increased substantially with increasing acoustic intensity and decreased with increasing ultrasound frequency. The numerical simulations revealed that NBB degraded mainly through the reaction with hydroxyl radical (OH), which is the dominant oxidant detected in the bubble during collapse. The production rate of OH radical inside a single bubble followed the same trend as that of NBB degradation rate. It increased with increasing acoustic intensity and decreased with increasing frequency. The enhancing effect of acoustic intensity toward the degradation of NBB was attributed to the rise of both the individual chemical bubble yield and the number of active bubbles with increasing acoustic intensity. The reducing effect of frequency was attributed to the sharp decrease in the chemical bubble yield with increasing frequency, which would not compensated by the rise of the number of active bubbles with the increase in ultrasound frequency.
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Affiliation(s)
- Hamza Ferkous
- Laboratory of Environmental Engineering, Department of Process Engineering, Faculty of Engineering, Badji Mokhtar - Annaba University, P.O. Box 12, 23000 Annaba, Algeria
| | - Slimane Merouani
- Laboratory of Environmental Engineering, Department of Process Engineering, Faculty of Engineering, Badji Mokhtar - Annaba University, P.O. Box 12, 23000 Annaba, Algeria; Department of Chemical Engineering, Faculty of Pharmaceutical Engineering Process, University of Constantine 3, Constantine, Algeria.
| | - Oualid Hamdaoui
- Laboratory of Environmental Engineering, Department of Process Engineering, Faculty of Engineering, Badji Mokhtar - Annaba University, P.O. Box 12, 23000 Annaba, Algeria
| | - Yacine Rezgui
- Laboratory of Applied Chemistry and Materials Technology, University of Oum El-Bouaghi, P.O. Box 358, 04000 Oum El Bouaghi, Algeria
| | - Miloud Guemini
- Laboratory of Applied Chemistry and Materials Technology, University of Oum El-Bouaghi, P.O. Box 358, 04000 Oum El Bouaghi, Algeria
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153
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Tian L, Zhang J, Shi H, Li N, Ping Q. Adsorption of Malachite Green by Diatomite: Equilibrium Isotherms and Kinetic Studies. J DISPER SCI TECHNOL 2015. [DOI: 10.1080/01932691.2015.1080610] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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154
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Removal of Reactive Blue 21 onto magnetic chitosan microparticles functionalized with polyamidoamine dendrimers. REACT FUNCT POLYM 2015. [DOI: 10.1016/j.reactfunctpolym.2015.04.007] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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155
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Wang X, Zhang L, Yang J, Dai F, Wang R, Sun D. Metal-Ion Metathesis and Properties of Triarylboron-Functionalized Metal-Organic Frameworks. Chem Asian J 2015; 10:1535-40. [DOI: 10.1002/asia.201500234] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Xiaoqing Wang
- Key Lab of Colloid and Interface Chemistry, Ministry of Education; School of Chemistry and Chemical Engineering; Shandong University, Jinan; Shandong 250100 P.R. China
| | - Liangliang Zhang
- State Key Laboratory of Heavy Oil Processing; College of Science; China University of Petroleum (East China), Qingdao; Shandong 266580 P.R. China
| | - Jie Yang
- Key Lab of Colloid and Interface Chemistry, Ministry of Education; School of Chemistry and Chemical Engineering; Shandong University, Jinan; Shandong 250100 P.R. China
| | - Fangna Dai
- State Key Laboratory of Heavy Oil Processing; College of Science; China University of Petroleum (East China), Qingdao; Shandong 266580 P.R. China
| | - Rongming Wang
- State Key Laboratory of Heavy Oil Processing; College of Science; China University of Petroleum (East China), Qingdao; Shandong 266580 P.R. China
| | - Daofeng Sun
- State Key Laboratory of Heavy Oil Processing; College of Science; China University of Petroleum (East China), Qingdao; Shandong 266580 P.R. China
- Key Lab of Colloid and Interface Chemistry, Ministry of Education; School of Chemistry and Chemical Engineering; Shandong University, Jinan; Shandong 250100 P.R. China
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156
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Wang Y, Gai L, Ma W, Jiang H, Peng X, Zhao L. Ultrasound-Assisted Catalytic Degradation of Methyl Orange with Fe3O4/Polyaniline in Near Neutral Solution. Ind Eng Chem Res 2015. [DOI: 10.1021/ie504242k] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Yang Wang
- Key Laboratory of Fine Chemicals in Universities of Shandong, School of Chemistry & Pharmaceutical Engineering, Qilu University of Technology, Jinan 250353, People’s Republic of China
| | - Ligang Gai
- Key Laboratory of Fine Chemicals in Universities of Shandong, School of Chemistry & Pharmaceutical Engineering, Qilu University of Technology, Jinan 250353, People’s Republic of China
| | - Wanyong Ma
- Key Laboratory of Fine Chemicals in Universities of Shandong, School of Chemistry & Pharmaceutical Engineering, Qilu University of Technology, Jinan 250353, People’s Republic of China
| | - Haihui Jiang
- Key Laboratory of Fine Chemicals in Universities of Shandong, School of Chemistry & Pharmaceutical Engineering, Qilu University of Technology, Jinan 250353, People’s Republic of China
| | - Xiangqian Peng
- Key Laboratory of Fine Chemicals in Universities of Shandong, School of Chemistry & Pharmaceutical Engineering, Qilu University of Technology, Jinan 250353, People’s Republic of China
| | - Lichun Zhao
- Key Laboratory of Fine Chemicals in Universities of Shandong, School of Chemistry & Pharmaceutical Engineering, Qilu University of Technology, Jinan 250353, People’s Republic of China
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157
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You L, Lu F, Song L, Yin Y, Zhang Q. Enhanced decolorization of aqueous dye solutions by a high quality copolymer flocculant. RSC Adv 2015. [DOI: 10.1039/c5ra07662e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A high quality copolymer flocculant (CATCS) with a high positive charge and unique strong bridging function is reported for the enhanced decolorization of dye solutions.
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Affiliation(s)
- Lijun You
- Institute of Biomedical and Pharmaceutical Technology & College of Chemistry and Chemical Engineering
- Fuzhou University
- Fuzhou 350001
- China
| | - Feifei Lu
- Institute of Biomedical and Pharmaceutical Technology & College of Chemistry and Chemical Engineering
- Fuzhou University
- Fuzhou 350001
- China
| | - Lidao Song
- Institute of Biomedical and Pharmaceutical Technology & College of Chemistry and Chemical Engineering
- Fuzhou University
- Fuzhou 350001
- China
| | - Yeping Yin
- Institute of Biomedical and Pharmaceutical Technology & College of Chemistry and Chemical Engineering
- Fuzhou University
- Fuzhou 350001
- China
| | - Qiqing Zhang
- Institute of Biomedical and Pharmaceutical Technology & College of Chemistry and Chemical Engineering
- Fuzhou University
- Fuzhou 350001
- China
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158
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Liu A, Zhou W, Shen K, Liu J, Zhang X. One-pot hydrothermal synthesis of hematite-reduced graphene oxide composites for efficient removal of malachite green from aqueous solution. RSC Adv 2015. [DOI: 10.1039/c4ra15589k] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The α-Fe2O3–rGO materials prepared by one-pot hydrothermal conditions exhibit an excellent capacity to remove MG from water.
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Affiliation(s)
- Airong Liu
- State Key Laboratory for Pollution Control and Resource Reuse
- College of Environmental Science and Engineering
- Tongji University
- Shanghai
- China
| | - Wen Zhou
- State Key Laboratory for Pollution Control and Resource Reuse
- College of Environmental Science and Engineering
- Tongji University
- Shanghai
- China
| | - Kaile Shen
- State Key Laboratory for Pollution Control and Resource Reuse
- College of Environmental Science and Engineering
- Tongji University
- Shanghai
- China
| | - Jing Liu
- State Key Laboratory for Pollution Control and Resource Reuse
- College of Environmental Science and Engineering
- Tongji University
- Shanghai
- China
| | - Xixi Zhang
- State Key Laboratory for Pollution Control and Resource Reuse
- College of Environmental Science and Engineering
- Tongji University
- Shanghai
- China
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159
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Cho E, Tahir MN, Kim H, Yu JH, Jung S. Removal of methyl violet dye by adsorption onto N-benzyltriazole derivatized dextran. RSC Adv 2015. [DOI: 10.1039/c5ra03317a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Methyl violet dye/N-benzyltriazole derivatized dextran interactions.
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Affiliation(s)
- Eunae Cho
- Institute for Ubiquitous Information Technology and Applications (UBITA)
- Konkuk University
- Seoul 143-701
- South Korea
| | - Muhammad Nazir Tahir
- The Danish Polymer Centre
- Department of Chemical and Biochemical Engineering Danmarks Tekniske Universitet (DTU)
- 2880 Kgs. Lyngby
- Denmark
| | - Hwanhee Kim
- Department of Bioscience and Biotechnology
- Bio/Molecular Informatics Center & Institute of Ubiquitous Information Technology and Applications (CBRU)
- Konkuk University
- Seoul 143-701
- South Korea
| | - Jae-Hyuk Yu
- Departments of Bacteriology and Genetics
- University of Wisconsin
- Madison
- USA
| | - Seunho Jung
- Department of Bioscience and Biotechnology
- Bio/Molecular Informatics Center & Institute of Ubiquitous Information Technology and Applications (CBRU)
- Konkuk University
- Seoul 143-701
- South Korea
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160
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Amodu OS, Ojumu TV, Ntwampe SK, Ayanda OS. Rapid Adsorption of Crystal Violet onto Magnetic Zeolite Synthesized from Fly Ash and Magnetite Nanoparticles. ACTA ACUST UNITED AC 2015. [DOI: 10.4236/jeas.2015.54016] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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161
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Roosta M, Ghaedi M, Yousefi F. Optimization of the combined ultrasonic assisted/adsorption method for the removal of malachite green by zinc sulfide nanoparticles loaded on activated carbon: experimental design. RSC Adv 2015. [DOI: 10.1039/c5ra16121e] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The aim of the present study is experimental design optimization applied to the removal of malachite green (MG) from aqueous solution by ultrasound-assisted removal onto zinc sulfide nanoparticles loaded on activated carbon (ZnS-NP-AC).
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Affiliation(s)
- Mostafa Roosta
- Chemistry Department
- Yasouj University
- Yasouj 75918-74831
- Iran
| | | | - Fakhri Yousefi
- Chemistry Department
- Yasouj University
- Yasouj 75918-74831
- Iran
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162
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Zhang J, Azam MS, Shi C, Huang J, Yan B, Liu Q, Zeng H. Poly(acrylic acid) functionalized magnetic graphene oxide nanocomposite for removal of methylene blue. RSC Adv 2015. [DOI: 10.1039/c5ra01815c] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A polyacrylic acid functionalized magnetic Fe3O4nanoparticle-graphene oxide nanocomposite shows high adsorption capacity of dye and excellent recyclability in water treatment.
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Affiliation(s)
- Jiawen Zhang
- Department of Chemical and Materials Engineering
- University of Alberta
- Edmonton
- Canada
| | - Md. Shafiul Azam
- Department of Chemical and Materials Engineering
- University of Alberta
- Edmonton
- Canada
| | - Chen Shi
- Department of Chemical and Materials Engineering
- University of Alberta
- Edmonton
- Canada
| | - Jun Huang
- Department of Chemical and Materials Engineering
- University of Alberta
- Edmonton
- Canada
| | - Bin Yan
- Department of Chemical and Materials Engineering
- University of Alberta
- Edmonton
- Canada
| | - Qingxia Liu
- Department of Chemical and Materials Engineering
- University of Alberta
- Edmonton
- Canada
| | - Hongbo Zeng
- Department of Chemical and Materials Engineering
- University of Alberta
- Edmonton
- Canada
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163
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Dutt S, Siril PF, Sharma V, Periasamy S. Goldcore–polyanilineshell composite nanowires as a substrate for surface enhanced Raman scattering and catalyst for dye reduction. NEW J CHEM 2015. [DOI: 10.1039/c4nj01521e] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The unique morphology of the nanocomposite is due to the confinement, typical diffusion path and the interaction between PANI and Au-nanoparticles.
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Affiliation(s)
- Sunil Dutt
- School of Basic Sciences
- Indian Institute of Technology
- Mandi-175005
- India
| | - Prem Felix Siril
- School of Basic Sciences
- Indian Institute of Technology
- Mandi-175005
- India
| | - Vipul Sharma
- School of Basic Sciences
- Indian Institute of Technology
- Mandi-175005
- India
| | - Selvakannan Periasamy
- Center for Advanced Materials and Industrial Chemistry
- School of Applied Sciences
- RMIT University
- Australia
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164
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Purevsuren B, Lin CJ, Davaajav Y, Ariunaa A, Batbileg S, Avid B, Jargalmaa S, Huang Y, Liou SYH. Adsorption isotherms and kinetics of activated carbons produced from coals of different ranks. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2015; 71:1189-1195. [PMID: 25909729 DOI: 10.2166/wst.2015.094] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Activated carbons (ACs) from six coals, ranging from low-rank lignite brown coal to high-rank stone coal, were utilized as adsorbents to remove basic methylene blue (MB) from an aqueous solution. The surface properties of the obtained ACs were characterized via thermal analysis, N2 isothermal sorption, scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy and Boehm titration. As coal rank decreased, an increase in the heterogeneity of the pore structures and abundance of oxygen-containing functional groups increased MB coverage on its surface. The equilibrium data fitted well with the Langmuir model, and adsorption capacity of MB ranged from 51.8 to 344.8 mg g⁻¹. Good correlation coefficients were obtained using the intra-particle diffusion model, indicating that the adsorption of MB onto ACs is diffusion controlled. The values of the effective diffusion coefficient ranged from 0.61 × 10⁻¹⁰ to 7.1 × 10⁻¹⁰ m² s⁻¹, indicating that ACs from lower-rank coals have higher effective diffusivities. Among all the ACs obtained from selected coals, the AC from low-rank lignite brown coal was the most effective in removing MB from an aqueous solution.
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Affiliation(s)
- B Purevsuren
- Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences, Ulaanbaatar, Mongolia
| | - Chin-Jung Lin
- Department of Environmental Engineering, National Ilan University, 1, Sec. 1, Shen-Lung Road, I-Lan, 260, Taiwan
| | - Y Davaajav
- Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences, Ulaanbaatar, Mongolia
| | - A Ariunaa
- Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences, Ulaanbaatar, Mongolia
| | - S Batbileg
- Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences, Ulaanbaatar, Mongolia
| | - B Avid
- Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences, Ulaanbaatar, Mongolia
| | - S Jargalmaa
- Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences, Ulaanbaatar, Mongolia
| | - Yu Huang
- Department of Environmental Engineering, National Ilan University, 1, Sec. 1, Shen-Lung Road, I-Lan, 260, Taiwan
| | - Sofia Ya-Hsuan Liou
- Department of Geosciences, National Taiwan University, P.O. Box 13-318, Taipei 106, Taiwan E-mail:
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165
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Sun C, Zhao Y, Zhang Z, Zhang Y, Zhang X. Decolorization of dyeing wastewater and characterization of flocs during coagulation by a new composite coagulant. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2015; 72:187-193. [PMID: 26177400 DOI: 10.2166/wst.2015.191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A composite coagulant, polymeric aluminum ferric chloride-poly-epichlorohydrin-ethylenediamine (PAFC-EPI-ETA), was synthesized and then used for the treatment of synthetic reactive brilliant red (RBR) dyeing wastewater. Effects of (Fe+Al) to EPI-ETA mass ratio (P) on the color removal and zeta potential were investigated under different coagulant dosages and initial pHs. Experimental results indicate that the removal of reactive dye and the charge neutralization ability of composite coagulant were improved by increasing the content of organic EPI-ETA. PAFC-EPI-ETA with P=1 achieved the best color removal percentage and strongest charge neutralization ability. Decolorization efficiency using PAFC-EPI-ETA was quite effecient with pH range of 6.0-7.5 for RBR dye removal. Characteristics of the formed floc were investigated with the dosage of PAFC-EPI-ETA under different P values. The low (Fe+Al) to EPI-ETA mass ratio contributed to the formation of flocs with high growth rate, large size and large size variation.
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Affiliation(s)
- Cuizhen Sun
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, China E-mail: ;
| | - Yang Zhao
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, China E-mail: ;
| | - Zhibin Zhang
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, China E-mail: ; ; Center for Sustainable Development and Global Competitiveness, Stanford University, Stanford, CA 94305, USA
| | - Yanhao Zhang
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, China E-mail: ;
| | - Xiaorui Zhang
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, China E-mail: ;
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166
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Gao L, Wang Y, Yan T, Cui L, Hu L, Yan L, Wei Q, Du B. A novel magnetic polysaccharide–graphene oxide composite for removal of cationic dyes from aqueous solution. NEW J CHEM 2015. [DOI: 10.1039/c4nj01792g] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Magnetic adsorbents with more adsorption sites can realize efficient adsorption of cationic dyes.
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Affiliation(s)
- Liang Gao
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- China
| | - Yaoguang Wang
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- China
| | - Tao Yan
- School of Resources and Environment
- University of Jinan
- Jinan 250022
- China
| | - Limei Cui
- School of Resources and Environment
- University of Jinan
- Jinan 250022
- China
| | - Lihua Hu
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- China
| | - Liangguo Yan
- School of Resources and Environment
- University of Jinan
- Jinan 250022
- China
| | - Qin Wei
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- China
| | - Bin Du
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- China
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167
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Liang CZ, Sun SP, Li FY, Ong YK, Chung TS. Treatment of highly concentrated wastewater containing multiple synthetic dyes by a combined process of coagulation/flocculation and nanofiltration. J Memb Sci 2014. [DOI: 10.1016/j.memsci.2014.06.057] [Citation(s) in RCA: 329] [Impact Index Per Article: 32.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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168
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Das RS, Singh B, Mandal A, Banerjee R, Mukhopadhyay S. Homogeneous Palladium Nanoparticles Surface Hosts Catalyzed Reduction of the Chromophoric Azo (-N=N-) Group of Dye, Acid Orange 7 by Borohydride in Alkaline Media. INT J CHEM KINET 2014. [DOI: 10.1002/kin.20883] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
| | - Bula Singh
- Department of Chemistry; Visva-Bharati; Santiniketan 731 235 India
| | - Arabinda Mandal
- Department of Chemistry; Haldia Government College; Purba Medinipur 721 657 India
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169
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Du Y, Pei M, He Y, Yu F, Guo W, Wang L. Preparation, characterization and application of magnetic Fe3O4-CS for the adsorption of orange I from aqueous solutions. PLoS One 2014; 9:e108647. [PMID: 25271644 PMCID: PMC4182735 DOI: 10.1371/journal.pone.0108647] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Accepted: 09/02/2014] [Indexed: 11/18/2022] Open
Abstract
Fe3O4 (Fe3O4-CS) coated with magnetic chitosan was prepared as an adsorbent for the removal of Orange I from aqueous solutions and characterized by FTIR, XRD, SEM, TEM and TGA measurements. The effects of pH, initial concentration and contact time on the adsorption of Orange I from aqueous solutions were investigated. The decoloration rate was higher than 94% in the initial concentration range of 50–150 mg L−1 at pH 2.0. The maximum adsorption amount was 183.2 mg g−1 and was obtained at an initial concentration of 400 mg L−1 at pH 2.0. The adsorption equilibrium was reached in 30 minutes, demonstrating that the obtained adsorbent has the potential for practical application. The equilibrium adsorption isotherm was analyzed by the Freundlich and Langmuir models, and the adsorption kinetics were analyzed by the pseudo-first-order and pseudo-second-order kinetic models. The higher linear correlation coefficients showed that the Langmuir model (R2 = 0.9995) and pseudo-second-order model (R2 = 0.9561) offered the better fits.
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Affiliation(s)
- Yankai Du
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong Province, China
| | - Meishan Pei
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong Province, China
- * E-mail:
| | - Youjun He
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong Province, China
| | - Faqi Yu
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong Province, China
| | - Wenjuan Guo
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong Province, China
| | - Luyan Wang
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong Province, China
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170
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Deka JR, Lin YH, Kao HM. Ordered cubic mesoporous silica KIT-5 functionalized with carboxylic acid groups for dye removal. RSC Adv 2014. [DOI: 10.1039/c4ra08819k] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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171
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Abdolmohammad-Zadeh H, Nejati K, Ghorbani E. Synthesis, Characterization, and Application of Zn–Al Layered Double Hydroxide as a Nano-Sorbent for the Removal of Direct Red 16 from Industrial Wastewater Effluents. CHEM ENG COMMUN 2014. [DOI: 10.1080/00986445.2014.927357] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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172
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Setareh Derakhshan M, Moradi O. The study of thermodynamics and kinetics methyl orange and malachite green by SWCNTs, SWCNT-COOH and SWCNT-NH2 as adsorbents from aqueous solution. J IND ENG CHEM 2014. [DOI: 10.1016/j.jiec.2013.11.064] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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173
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Adsorption of Acid Yellow 99 by polyacrylonitrile/activated carbon composite: Kinetics, thermodynamics and isotherm studies. J Mol Liq 2014. [DOI: 10.1016/j.molliq.2014.05.003] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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174
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Shi J, Ai Z, Zhang L. Fe@Fe2O3 core-shell nanowires enhanced Fenton oxidation by accelerating the Fe(III)/Fe(II) cycles. WATER RESEARCH 2014; 59:145-53. [PMID: 24793112 DOI: 10.1016/j.watres.2014.04.015] [Citation(s) in RCA: 133] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Revised: 04/07/2014] [Accepted: 04/08/2014] [Indexed: 05/21/2023]
Abstract
In this study we demonstrate Fe@Fe2O3 core-shell nanowires can improve Fenton oxidation efficiency by two times with rhodamine B as a model pollutant at pH > 4. Active species trapping experiments revealed that the rhodamine B oxidation enhancement was attributed to molecular oxygen activation induced by Fe@Fe2O3 core-shell nanowires. The molecular oxygen activation process could generate superoxide radicals to assist iron core for the reduction of ferric ions to accelerate the Fe(III)/Fe(II) cycles, which favored the H2O2 decomposition to produce more hydroxyl radicals for the rhodamine B oxidation. The combination of Fe@Fe2O3 core-shell nanowires and ferrous ions (Fe@Fe2O3/Fe(2+)) offered a superior Fenton catalyst to decompose H2O2 for producing OH. We employed benzoic acid as a probe reagent to check the generation of OH and found the OH generation rate of Fe@Fe2O3/Fe(2+) was 2-4 orders of magnitude larger than those of commonly used iron based Fenton catalysts and 38 times that of Fe(2+). The reusability and the stability of Fe@Fe2O3 core-shell nanowires were studied. Total organic carbon and ion chromatography analyses revealed the mineralization of rhodamine B and the releasing of nitrate ions. Gas chromatograph-mass spectrometry was used to investigate the degradation intermediates to propose the possible rhodamine B Fenton oxidation pathway in the presence of Fe@Fe2O3 nanowires. This study not only provides a new Fenton oxidation system for pollutant control, but also widen the application of molecular oxygen activation induced by nanoscale zero valent iron.
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Affiliation(s)
- Jingu Shi
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, People's Republic of China
| | - Zhihui Ai
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, People's Republic of China.
| | - Lizhi Zhang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, People's Republic of China.
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175
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Zhao S, Gao B, Yue Q, Wang Y. Effect of Enteromorpha polysaccharides on coagulation performance and kinetics for dye removal. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.05.035] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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176
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Huang X, Bo X, Zhao Y, Gao B, Wang Y, Sun S, Yue Q, Li Q. Effects of compound bioflocculant on coagulation performance and floc properties for dye removal. BIORESOURCE TECHNOLOGY 2014; 165:116-121. [PMID: 24656485 DOI: 10.1016/j.biortech.2014.02.125] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Revised: 02/23/2014] [Accepted: 02/26/2014] [Indexed: 06/03/2023]
Abstract
A series of jar tests was conducted to investigate the coagulation performance of using compound bioflocculant (CBF) as a coagulant aid with aluminum sulfate (AS) and polyaluminum chloride (PAC) in synthetic dyeing wastewater treatment. Floc size, growth, breakage, re-growth and sedimentation natural were investigated by PDA2000. The results showed that the corresponding dual-coagulants of AS and PAC enhanced the color removal efficiency, especially at low aluminum dosage. Results also indicated that the floc generated by aluminum salts and CBF had larger size and higher growth rate. In addition, for both AS and PAC the floc recoverability was improved by addition of CBF. The adsorption and bridging effect of CBF performed a positive role in dye wastewater treatment.
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Affiliation(s)
- Xin Huang
- School of Environmental Science and Engineering, Shandong University, No. 27 Shanda South Road, Jinan 250100, Shandong, People's Republic of China
| | - Xiaowen Bo
- School of Environmental Science and Engineering, Shandong University, No. 27 Shanda South Road, Jinan 250100, Shandong, People's Republic of China
| | - Yanxia Zhao
- School of Environmental Science and Engineering, Shandong University, No. 27 Shanda South Road, Jinan 250100, Shandong, People's Republic of China
| | - Baoyu Gao
- School of Environmental Science and Engineering, Shandong University, No. 27 Shanda South Road, Jinan 250100, Shandong, People's Republic of China.
| | - Yan Wang
- School of Environmental Science and Engineering, Shandong University, No. 27 Shanda South Road, Jinan 250100, Shandong, People's Republic of China
| | - Shenglei Sun
- School of Environmental Science and Engineering, Shandong University, No. 27 Shanda South Road, Jinan 250100, Shandong, People's Republic of China
| | - Qinyan Yue
- School of Environmental Science and Engineering, Shandong University, No. 27 Shanda South Road, Jinan 250100, Shandong, People's Republic of China
| | - Qian Li
- School of Environmental Science and Engineering, Shandong University, No. 27 Shanda South Road, Jinan 250100, Shandong, People's Republic of China
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177
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Bazrafshan E, Mostafapour FK, Ahmadabadi M, Mahvi AH. Turbidity removal from aqueous environments byPistacia atlantica(Baneh) seed extract as a natural organic coagulant aid. DESALINATION AND WATER TREATMENT 2014. [DOI: 10.1080/19443994.2014.942704] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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178
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Faghihian H, Bahramian E. SYNTHESIS OF POLYMERIC AL-BENTONITE AND POLYMERIC FE-BENTONITE FOR SIMULTANEOUS REMOVAL OF TURBIDITY, SR+2, AND PB+2FROM COLLOIDAL AQUEOUS WASTES. CHEM ENG COMMUN 2014. [DOI: 10.1080/00986445.2013.812558] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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179
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Lim LBL, Priyantha N, Chan CM, Matassan D, Chieng HI, Kooh MRR. Adsorption Behavior of Methyl Violet 2B Using Duckweed: Equilibrium and Kinetics Studies. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2014. [DOI: 10.1007/s13369-014-1224-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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180
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Rodrigues CSD, Boaventura RAR, Madeira LM. Technical and economic feasibility of polyester dyeing wastewater treatment by coagulation/flocculation and Fenton's oxidation. ENVIRONMENTAL TECHNOLOGY 2014; 35:1307-1319. [PMID: 24701928 DOI: 10.1080/09593330.2013.866983] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
This study aims to investigate the efficiency of individual and integrated processes applied to organic matter abatement and biodegradability improvement of a polyester dyeing wastewater, namely coagulation/flocculation combined with Fenton's reagent (Approach 1), Fenton oxidation alone (Approach 2) and its integration with coagulation/flocculation (Approach 3). The effects of Fe2+ dose, initial concentration of the oxidant (H202) and temperature during Fenton's oxidation were evaluated in Approaches 1 and 2, whereas in Approach 3 the influence ofpH and flocculant dose was also assessed, during the coagulation/flocculation stage. Toxicity and biodegradability of the final effluent were also evaluated. After oxidation, a slight increase in the specific oxygen uptake rate of the effluent was observed (from 27.0 up to 28.5-30.0mg O2/(gVSSh)) and the inhibition to Vibrio fischeri was eliminated. An effluent that complies with discharge standards was obtained in all cases; however, Approach 3 revealed to be a promising solution for treating this effluent as it leads to smaller operating costs. Therefore, the use of dissolved iron resulting from Fenton's oxidation as coagulant in the second stage was shown to be an innovative, efficient and economically attractive strategy for treating these effluents.
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181
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Nayab S, Farrukh A, Oluz Z, Tuncel E, Tariq SR, ur Rahman H, Kirchhoff K, Duran H, Yameen B. Design and fabrication of branched polyamine functionalized mesoporous silica: an efficient absorbent for water remediation. ACS APPLIED MATERIALS & INTERFACES 2014; 6:4408-17. [PMID: 24564236 DOI: 10.1021/am500123k] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
A novel branched polyamine (polyethyleneimine, PEI) functionalized mesoporous silica (MS) adsorbent is developed via a facile "grafting-to" approach. X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FT-IR) spectroscopy verified the effective surface functionalization of MS with monolayer and polymer. The transmission electron microscopy (TEM) was employed to reveal the morphology of the fabricated materials. The adsorption behavior of the polyamine functionalized mesoporous silica (MS-PEI) is assessed against anionic dyes. The adsorbent characteristics of MS-PEI are compared with a monolayer platform comprising of 3-aminopropyltriethoxy silane (APTES) functionalized mesoporous silica (MS-APTES). The adsorption behavior of the MS-PEI and MS-APTES toward anionic dyes is further evaluated by studying the effect of adsorbent dosage, pH, contact time, and temperature. Langmuir and Freundlich isotherm models are employed to understand the adsorption mechanism. The obtained kinetic data support a pseudo-second-order adsorption behavior for both monolayer and polymer functionalized MS. The associated thermodynamic parameters (ΔG°, ΔH°, and ΔS°) reveal that the process of adsorption with MS-PEI is more spontaneous and energetically favored as compared to the adsorption with MS-APTES. Taken together, the novel adsorbent system derived from a combination of MS and branched polymer (MS-PEI) shows the higher absorption efficiency and capacity toward the anionic dyes than the monolayer based adsorbent (MS-APTES).
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Affiliation(s)
- Sana Nayab
- Department of Chemistry, Lahore College for Women University , Jail Road, Lahore, Punjab 54000, Pakistan
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182
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Zhao S, Gao B, Yue Q, Wang Y, Li Q, Dong H, Yan H. Study of Enteromorpha polysaccharides as a new-style coagulant aid in dye wastewater treatment. Carbohydr Polym 2014; 103:179-86. [DOI: 10.1016/j.carbpol.2013.12.045] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2013] [Revised: 12/02/2013] [Accepted: 12/13/2013] [Indexed: 11/28/2022]
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183
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Lee JJ. Equilibrium, Kinetics and Thermodynamic Parameters Studies on Metanil Yellow Dye Adsorption by Granular Activated Carbon. APPLIED CHEMISTRY FOR ENGINEERING 2014. [DOI: 10.14478/ace.2013.1122] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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184
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M. A, M.P. S. Isotherm modeling, kinetic study and optimization of batch parameters for effective removal of Acid Blue 45 using tannery waste. J Mol Liq 2013. [DOI: 10.1016/j.molliq.2013.06.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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185
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Zhang J, Chang F, Ren Y, Shi Q. An important improvement in Ferron-timed spectrophotometry. APPLIED SPECTROSCOPY 2013; 67:985-992. [PMID: 23876737 DOI: 10.1366/12-06913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Ferron dosage ([Ferron]) is key to ferron-timed spectrophotometry (ferron assay). In order to clarify some important questions, the following studies were conducted: (1) The effect of [Ferron] on the sensitivity of total aluminum (AlT) determination was experimentally investigated and ²⁷Al nuclear magnetic resonance (²⁷Al NMR) spectroscopy was used to verify our developed Ferron assay; (2) the chemical equilibrium calculation was employed to analyze the effect of [Ferron] on the determination of AlT; and (3) the main reason for insufficient [Ferron] was further analyzed. This is the first study to standardize a ferron assay operating procedure.
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Affiliation(s)
- Jing Zhang
- Department of Biology and Food, Zhejiang Pharmaceutical College, Ningbo 315100, China.
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186
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Xu L, Guo Z, Du L. Anodic oxidation of azo dye C.I. Acid Red 73 by the yttrium-doped Ti/SnO2-Sb electrodes. Front Chem Sci Eng 2013. [DOI: 10.1007/s11705-013-1335-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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187
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Bootharaju MS, Pradeep T. Facile and rapid synthesis of a dithiol-protected Ag7 quantum cluster for selective adsorption of cationic dyes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:8125-8132. [PMID: 23705791 DOI: 10.1021/la401180r] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We report a facile and rapid (less than 15 min) synthesis of atomically precise, dithiol-protected, silver quantum cluster, Ag7(DMSA)4 (DMSA: meso-2,3-dimercaptosuccinic acid), through a modified solid state route. The as-synthesized cluster exhibits molecular optical absorption features with a prominent λmax at ~500 nm. Composition of the cluster was confirmed using various spectroscopic and microscopic techniques such as electrospray ionization mass spectrometry (ESI MS), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and energy dispersive analysis of X-rays (EDAX). Clusters supported on neutral alumina have been shown as better adsorbents for selective adsorption of cationic dyes (over anionic dyes) from water. This selectivity for cationic dyes was evaluated by zeta potential (ζ) measurements. The efficiency of clusters for removal of dyes is very high when compared to nanoparticles (NPs) protected with ligands (citrate and mercaptosuccinic acid (MSA)) possessing similar chemical structures as that of DMSA. The higher efficiency of clusters for the removal of dyes is attributed to their smaller size and large surface area compared to the NPs in addition to favorable electrostatic interactions between the clusters and cationic dyes. Adsorption of dyes (cationic and anionic) was enhanced when dye molecules contain hydrogen bond forming functional groups. Supported clusters have been reused up to five cycles without the loss of activity once the adsorbed dye is extracted using suitable solvents.
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Affiliation(s)
- M S Bootharaju
- DST Unit of Nanoscience (DST UNS), Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India
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188
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Decolourization and degradation of C.I. Acid Red 73 by anodic oxidation and the synergy technology of anodic oxidation coupling nanofiltration. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.01.148] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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189
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Zinc–aluminum layered double hydroxide as a nano-sorbent for removal of Reactive Yellow 84 dye from textile wastewater effluents. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2013. [DOI: 10.1007/s13738-013-0255-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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190
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Rodrigues CSD, Madeira LM, Boaventura RAR. Treatment of textile dye wastewaters using ferrous sulphate in a chemical coagulation/flocculation process. ENVIRONMENTAL TECHNOLOGY 2013; 34:719-729. [PMID: 23837323 DOI: 10.1080/09593330.2012.715679] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The coagulation/flocculation treatment using FeSO4 x 7H2O as a coagulant is evaluated in this work for the removal of organic compounds and colour from synthetic effluents simulating the cotton, acrylic and polyester dyeing wastewaters. The coagulant dose, temperature, pH, stirring speed and stirring time that maximized the removal of dissolved organic carbon (DOC) and colour for each effluent are determined for the coagulation process. The effect of the stirring speed, stirring time and the dose of flocculant (Magnafloc 155 or Superfloc C-573) on the flocculation stage is also evaluated for effluents pretreated by coagulation at the optimal conditions previously determined. The obtained results showed that the optimal operating conditions are different for each effluent, and the process (coagulation/flocculation) as a whole was efficient in terms of colour removal (-91% for cotton, -94% for acrylic effluents; polyester effluent is practically colourless). However, the DOC removal observed is not significant (33% for polyester, -45% for cotton and -28% for acrylic effluents). On the other hand, the remaining dissolved iron content is appropriate for further integrating the treatment with an iron-catalysed Fenton process, thus reducing the consumption of chemicals in the overall treatment.
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Affiliation(s)
- Carmen S D Rodrigues
- LSRE - Laboratório de Processos de Separação e Reacção, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, R. Dr. Roberto Frias, 4200-465 Porto, Portugal
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191
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Fitria D, Scholz M, Swift GM. Impact of different shapes and types of mixers on sludge dewaterability. ENVIRONMENTAL TECHNOLOGY 2013; 34:931-936. [PMID: 23837344 DOI: 10.1080/09593330.2012.722692] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The most significant operational cost in a treatment plant is related to the dewatering and disposal of sludge. In this research, different shapes of mixers (radial, axial, wheel, three-blade and magnetic) have been tested to assess their influence on sludge dewaterability testing. As well as the shape of mixers, different rapid mixing velocities, rapid mixing times and coagulants also have been used as test parameters. The capillary suction time (CST) test apparatus was used as a rapid measure to assess sludge dewaterability. Findings indicate that the use of magnetic stirrers leads to the lowest sludge dewaterability properties tested using the CST. The magnetic stirrer produced greater vortex and turbulence compared with other types of mixers, so rapid contact between the coagulant and the water occurred. The use of the other mixers produced similar results. However, the application of different coagulants results differently regarding the sludge dewaterability, when using different rapid mixing velocities. Different rapid mixing times did not lead to differences in the CST. During rapid mixing, Moringa oleifera produced the highest CST values followed by alum and ferric. This is likely due to the difference in sludge volume that is produced by each coagulant. Only M. oleifera produced contaminant agglomerates. In comparison, alum and ferric produced contaminant agglomerates and coagulant hydrolysis products.
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Affiliation(s)
- Dewi Fitria
- Civil Engineering Research Centre, School of Computing, Science and Engineering, The University of Salford, Salford, UK
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192
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Removal of malachite green from aqueous solution using nano-iron oxide-loaded alginate microspheres: batch and column studies. RESEARCH ON CHEMICAL INTERMEDIATES 2013. [DOI: 10.1007/s11164-012-1011-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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193
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He YC, Yang J, Kan WQ, Ma JF. An ideal metal–organic rhombic dodecahedron for highly efficient adsorption of dyes in an aqueous solution. CrystEngComm 2013. [DOI: 10.1039/c2ce26836a] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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194
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Ning Y, Yang Y, Wang C, Ngai T, Tong Z. Hierarchical porous polymeric microspheres as efficient adsorbents and catalyst scaffolds. Chem Commun (Camb) 2013; 49:8761-3. [PMID: 23985740 DOI: 10.1039/c3cc45323e] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Yin Ning
- Research Institute of Materials Science, South China University of Technology, Guangzhou, People's Republic of China.
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195
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Pirkarami A, Olya ME, Tabibian S. Treatment of colored and real industrial effluents through electrocoagulation using solar energy. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2013; 48:1243-1252. [PMID: 23647115 DOI: 10.1080/10934529.2013.776890] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
This study was undertaken to investigate the removal of Acid Orange 2 (sodium 4-[(2E)-2-(2-oxonaphthalen-1-ylidene) hydrazinyl] benzenesulfonate) and Reactive Blue 19 (2-Anthracenesulfonicacid,1-amino-9,10-dihydro-9,10-dioxo-4-[[3-[[2-(sulfooxy) ethyl] sulfonyl] phenyl] amino]-,sodium salt (1:2)) from synthesized and real effluents through electrocoagulation using solar cells for the purpose of improving economic efficiency of the process. The impact of a number of key operating parameters was explored including current density, anode type, temperature, pH, and electrolyte concentration. The current density of 45 Am(-2) proved to be the optimum level for both dyes. The same optimum alternatives were found for the other parameters in both cases: iron anode, a temperature level of 25°C, a pH of 7, and an electrolyte concentration of 15 mg L(-1). Both effluent samples were subjected to COD (chemical oxygen demand) and TOC (total organic carbon) tests. Cost analysis was performed for the treatment process.
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Affiliation(s)
- Azam Pirkarami
- Department of Environmental Research, Institute for Color Science and Technology, Tehran, Iran
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196
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Ray S, Takafuji M, Ihara H. Peptide-based surface modified silica particles: adsorption materials for dye-loaded wastewater treatment. RSC Adv 2013. [DOI: 10.1039/c3ra43871f] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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197
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Behnajady MA, Hajiahmadi M, Modirshahla N. Enhancement of Removal Rate of an Organic Pollutant in the Presence of Immobilized TiO2 Nanoparticles with Inorganic Anions Combination: Optimization Using Taguchi Approach. Ind Eng Chem Res 2012. [DOI: 10.1021/ie301521z] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mohammad A. Behnajady
- Department of Chemistry, Faculty of Science, Tabriz
Branch, Islamic Azad University, Tabriz,
Iran
| | - Mahsa Hajiahmadi
- Department of Chemistry, Faculty of Science, Tabriz
Branch, Islamic Azad University, Tabriz,
Iran
| | - Nasser Modirshahla
- Department of Chemistry, Faculty of Science, Tabriz
Branch, Islamic Azad University, Tabriz,
Iran
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198
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Zhang WM, Zhuang JX, Chen Q, Wang S, Song WG, Wan LJ. Cost-Effective Production of Pure Al13 from AlCl3 by Electrolysis. Ind Eng Chem Res 2012. [DOI: 10.1021/ie301048k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wei-Ming Zhang
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325000, P.R. China
| | - Jin-Xia Zhuang
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325000, P.R. China
| | - Qing Chen
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325000, P.R. China
| | - Shun Wang
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325000, P.R. China
| | - Wei-Guo Song
- Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing 100190,
P.R. China
| | - Li-Jun Wan
- Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing 100190,
P.R. China
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199
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Coagulation performance and floc characteristics of aluminum sulfate using sodium alginate as coagulant aid for synthetic dying wastewater treatment. Sep Purif Technol 2012. [DOI: 10.1016/j.seppur.2012.05.009] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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200
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Wang YF, Gao BY, Yue QY, Wang Y, Yang ZL. Removal of acid and direct dye by epichlorohydrin-dimethylamine: flocculation performance and floc aggregation properties. BIORESOURCE TECHNOLOGY 2012; 113:265-71. [PMID: 22209132 DOI: 10.1016/j.biortech.2011.11.106] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2011] [Revised: 11/21/2011] [Accepted: 11/25/2011] [Indexed: 05/07/2023]
Abstract
A cationic organic flocculant epichlorohydrin-dimethylamine (EPI-DMA) was employed for the treatment of acid and direct dye. The study aims at investigating the flocculation performance of EPI-DMA for the model dye, and corresponding floc aggregation properties, which were determined by jar test and photometric dispersion analysis, respectively. The interactions between cationic flocculant and anionic dye were investigated through spectra analysis. The results showed that EPI-DMA effectively decolorized the tested acid and direct dye. The viscosity and cationicity of EPI-DMA had different influence on the removal of different dye. Chemical interaction was observed between quaternary ammonium of EPI-DMA and sulfonic group of dye. The flocculation dynamic process showed that flocs with better aggregation and sedimentation properties were produced by EPI-DMA with higher viscosity and cationicity for acid dye. Contrarily, flocs with the best aggregation and sedimentation properties were produced by EPI-DMA with the lowest viscosity and cationicity for direct dye.
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Affiliation(s)
- Yuan-Fang Wang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, No. 27 Shanda South Road, 250100 Jinan, China
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