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Zhou Y, Zhang X, He F, Liu K, Xia NN, Wu Q, Kong F. Starch-based self-assembled three-dimensional network nanostructure materials for sustainable cascade adsorption. Int J Biol Macromol 2024; 277:134355. [PMID: 39089543 DOI: 10.1016/j.ijbiomac.2024.134355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 07/18/2024] [Accepted: 07/29/2024] [Indexed: 08/04/2024]
Abstract
Toward the development of a sustainable utilization strategy for adsorption materials, a starch-based adsorbent starch-chitosan-tannic acid (St-CTS-TA) with a three-dimensional (3D) structure was fabricated in water via electrostatic and hydrogen bonding reactions between St, CTS, and TA without using toxic reducing agents or special instruments. St-CTS-TA demonstrated a high specific surface area of 37 m2/g as well as a mesoporous/macroporous distribution ranging from 30 to 80 nm, which enhanced the mass transfer of adsorbate and the exposure of catechol groups in TA. The Langmuir isotherm adsorption model revealed that the highest adsorption capacities of St-CTS-TA for Fe3+ and Co2+ were 1678.2 and 944.8 mg/g, respectively. Surprisingly, the specific surface area of St-CTS-TA increased from 37 to 87 and 42 m2/g after Fe3+ and Co2+ adsorption, respectively, and the resulting St-CTS-TA-Fe and St-CTS-TA-Co could continuously adsorb basic fuchsin (BF) and rhodamine B (RhB). The adsorption capacities of St-CTS-TA-Fe and St-CTS-TA-Co for BF/RhB were found to be 1854.79/401.19 mg/g and 2229.77/537.49 mg/g, respectively, based on the Langmuir isotherm adsorption model.
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Affiliation(s)
- Yujun Zhou
- State Key Laboratory of Biobased Material and Green Papermaking, Key Laboratory of Pulp & Paper Science and Technology of Shandong Province/Ministry of Education, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Xuan Zhang
- State Key Laboratory of Biobased Material and Green Papermaking, Key Laboratory of Pulp & Paper Science and Technology of Shandong Province/Ministry of Education, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Fei He
- School of Material Science and Engineering, University of Jinan, Jinan 250022, China
| | - Keyin Liu
- State Key Laboratory of Biobased Material and Green Papermaking, Key Laboratory of Pulp & Paper Science and Technology of Shandong Province/Ministry of Education, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Nan Nan Xia
- State Key Laboratory of Biobased Material and Green Papermaking, Key Laboratory of Pulp & Paper Science and Technology of Shandong Province/Ministry of Education, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.
| | - Qin Wu
- State Key Laboratory of Biobased Material and Green Papermaking, Key Laboratory of Pulp & Paper Science and Technology of Shandong Province/Ministry of Education, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.
| | - Fangong Kong
- State Key Laboratory of Biobased Material and Green Papermaking, Key Laboratory of Pulp & Paper Science and Technology of Shandong Province/Ministry of Education, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
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2
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Kim SR, Park JY, Park EY. Effect of ethanol, phytic acid and citric acid treatment on the physicochemical and heavy metal adsorption properties of corn starch. Food Chem 2024; 431:137167. [PMID: 37604005 DOI: 10.1016/j.foodchem.2023.137167] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 07/26/2023] [Accepted: 08/13/2023] [Indexed: 08/23/2023]
Abstract
Corn starch dispersions were heated with ethanol (E) and reacted with phytic acid (E-PA), citric acid (E-CA), and a mixture of phytic and citric acid (E-PACA) under dry-heating to prepare heavy metal adsorbents. Microscopy images indicated that ethanol treatment induced the formation of porous structures on the surface; furthermore, treatment with phytic and citric acid induced indentations, pores, and irregular structures in E-PA, E-CA, and E-PACA starches. Phytic and citric acid were retained in the starch molecules through ester bonds with the phosphate and carboxyl groups, respectively. Starch esterification by phytic and citric acid induced a loss of crystallinity, high water absorption capacity, and low solubility. E-PACA starch exhibited more efficient Cu2+ adsorption (38.13 mg/g) than native, E, E-PA, and E-CA starches (0.11, 0.49, 2.05, and 36.23 mg/g, respectively). Thus, modification with ethanol, phytic acid and citric acid can be applied to prepare natural starch-based heavy metal adsorbents.
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Affiliation(s)
- Se-Rin Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Jae Young Park
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Eun Young Park
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea.
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3
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Assila O, Vilaça N, Bertão AR, Fonseca AM, Parpot P, Soares OSGP, Pereira MFR, Baltazar F, Bañobre-López M, Neves IC. Optimization of iron-ZIF-8 catalysts for degradation of tartrazine in water by Fenton-like reaction. CHEMOSPHERE 2023; 339:139634. [PMID: 37516319 DOI: 10.1016/j.chemosphere.2023.139634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 07/21/2023] [Accepted: 07/22/2023] [Indexed: 07/31/2023]
Abstract
Optimization of iron zeolitic imidazole framework-8 (FeZIF-8) nanoparticles, as heterogeneous catalysts, were synthesized and evaluated by the Fenton-like reaction for to degrade tartrazine (Tar) in aqueous environment. To achieve this, ZIF-8 nanoparticles were modified with different iron species (Fe2+ or Fe3O4), and subsequently assessed through the Fenton-like oxidation. The effect of different parameters such as the concentration of hydrogen peroxide, the mass of catalyst and the contact time of reaction on the degradation of Tar by Fenton-like oxidation was studied by using the Box-Behnken design (BBD). The BBD model indicated that the optimum catalytic conditions for Fenton-like reaction with an initial pollutant concentration of 30 ppm at pH 3.0 were T = 40 °C and 12 mM of H2O2, 2 g/L of catalyst and 4 h of reaction. The maximum Tar conversion value achieved with the best catalyst, Fe1ZIF-8, was 66.5% with high mineralization (in terms of decrease of total organic carbon - TOC), 44.2%. To assess phytotoxicity, the germination success of corn kernels was used as an indicator in the laboratory. The results show that the catalytic oxidation by Fenton-like reaction using heterogeneous iron ZIF-8 catalysts is a viable alternative for treating contaminated effluents with organic pollutants and highlighted the importance of the validation of the optimized experimental conditions by mathematical models.
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Affiliation(s)
- Ouissal Assila
- CQUM, Centre of Chemistry, Chemistry Department, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - Natália Vilaça
- CQUM, Centre of Chemistry, Chemistry Department, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal; INL - Advanced (magnetic) Theranostic Nanostructures Lab, Nanomedicine Group, International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga, 4715- 330, Braga, Portugal
| | - Ana R Bertão
- CQUM, Centre of Chemistry, Chemistry Department, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal; INL - Advanced (magnetic) Theranostic Nanostructures Lab, Nanomedicine Group, International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga, 4715- 330, Braga, Portugal; Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057, Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - António M Fonseca
- CQUM, Centre of Chemistry, Chemistry Department, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal; CEB - Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - Pier Parpot
- CQUM, Centre of Chemistry, Chemistry Department, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal; CEB - Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - Olívia S G P Soares
- LSRE-LCM - Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials, Faculty of Engineering, University of Porto, Portugal; ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Portugal
| | - Manuel F R Pereira
- LSRE-LCM - Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials, Faculty of Engineering, University of Porto, Portugal; ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Portugal
| | - Fátima Baltazar
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057, Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Manuel Bañobre-López
- INL - Advanced (magnetic) Theranostic Nanostructures Lab, Nanomedicine Group, International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga, 4715- 330, Braga, Portugal
| | - Isabel C Neves
- CQUM, Centre of Chemistry, Chemistry Department, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal; CEB - Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal.
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Khoo PS, Ilyas RA, Uda MNA, Hassan SA, Nordin AH, Norfarhana AS, Ab Hamid NH, Rani MSA, Abral H, Norrrahim MNF, Knight VF, Lee CL, Rafiqah SA. Starch-Based Polymer Materials as Advanced Adsorbents for Sustainable Water Treatment: Current Status, Challenges, and Future Perspectives. Polymers (Basel) 2023; 15:3114. [PMID: 37514503 PMCID: PMC10385024 DOI: 10.3390/polym15143114] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 07/17/2023] [Accepted: 07/18/2023] [Indexed: 07/30/2023] Open
Abstract
Over the past three decades, chemical and biological water contamination has become a major concern, particularly in the industrialized world. Heavy metals, aromatic compounds, and dyes are among the harmful substances that contribute to water pollution, which jeopardies the human health. For this reason, it is of the utmost importance to locate methods for the cleanup of wastewater that are not genuinely effective. Owing to its non-toxicity, biodegradability, and biocompatibility, starch is a naturally occurring polysaccharide that scientists are looking into as a possible environmentally friendly material for sustainable water remediation. Starch could exhibit significant adsorption capabilities towards pollutants with the substitution of amide, amino, carboxyl, and other functional groups for hydroxyl groups. Starch derivatives may effectively remove contaminants such as oil, organic solvents, pesticides, heavy metals, dyes, and pharmaceutical pollutants by employing adsorption techniques at a rate greater than 90%. The maximal adsorption capacities of starch-based adsorbents for oil and organic solvents, pesticides, heavy metal ions, dyes, and pharmaceuticals are 13,000, 66, 2000, 25,000, and 782 mg/g, respectively. Although starch-based adsorbents have demonstrated a promising future for environmental wastewater treatment, additional research is required to optimize the technique before the starch-based adsorbent can be used in large-scale in situ wastewater treatment.
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Affiliation(s)
- Pui San Khoo
- Centre for Advanced Composite Materials, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia
| | - R A Ilyas
- Centre for Advanced Composite Materials, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia
- Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia
- Institute of Tropical Forest and Forest Products (INTROP), Universiti Putra Malaysia, Serdang 43400 UPM, Selangor, Malaysia
- Centre of Excellence for Biomass Utilization, Universiti Malaysia Perlis, Arau 02600, Perlis, Malaysia
| | - M N A Uda
- Centre of Excellence for Biomass Utilization, Universiti Malaysia Perlis, Arau 02600, Perlis, Malaysia
- Faculty of Mechanical Engineering and Technology, Universiti Malaysia Perlis, Arau 02600, Perlis, Malaysia
| | - Shukur Abu Hassan
- Centre for Advanced Composite Materials, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia
- Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia
| | - A H Nordin
- Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia
| | - A S Norfarhana
- Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia
| | - N H Ab Hamid
- Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia
| | - M S A Rani
- Institute of Tropical Forest and Forest Products (INTROP), Universiti Putra Malaysia, Serdang 43400 UPM, Selangor, Malaysia
- Department of Physics, Faculty of Science, Universiti Putra Malaysia, Serdang 43400 UPM, Selangor, Malaysia
| | - Hairul Abral
- Laboratory of Nanoscience and Technology, Department of Mechanical Engineering, Andalas University, Padang 25163, Indonesia
- Research Collaboration Center for Nanocellulose, BRIN-Andalas University, Padang 25163, Indonesia
| | - M N F Norrrahim
- Research Centre for Chemical Defence, Universiti Pertahanan Nasional Malaysia, Kem Perdana Sungai Besi, Kuala Lumpur 57000, Malaysia
| | - V F Knight
- Research Centre for Chemical Defence, Universiti Pertahanan Nasional Malaysia, Kem Perdana Sungai Besi, Kuala Lumpur 57000, Malaysia
| | - Chuan Li Lee
- Institute of Tropical Forest and Forest Products (INTROP), Universiti Putra Malaysia, Serdang 43400 UPM, Selangor, Malaysia
| | - S Ayu Rafiqah
- Institute of Tropical Forest and Forest Products (INTROP), Universiti Putra Malaysia, Serdang 43400 UPM, Selangor, Malaysia
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Tang H, He Q, Li Y, Liu X. Sulfonated carboxymethyl debranched starch: Preparation, performance and application. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03223-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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6
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Focus on the removal of lead and cadmium ions from aqueous solutions using starch derivatives: A review. Carbohydr Polym 2022; 290:119463. [DOI: 10.1016/j.carbpol.2022.119463] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 03/31/2022] [Accepted: 04/02/2022] [Indexed: 11/20/2022]
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Crini G, Bradu C, Fourmentin M, Cosentino C, Ribeiro ARL, Morin-Crini N. Sorption of 4-n-nonylphenol, 4-n-octylphenol, and 4-tert-octyphenol on cyclodextrin polymers. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:171-181. [PMID: 34014475 DOI: 10.1007/s11356-021-14435-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 05/11/2021] [Indexed: 06/12/2023]
Abstract
Alkylphenols are industrial pollutants commonly present in wastewater. They are difficult to eliminate by conventional treatment processes, ending up in the sludge of wastewater treatment plants. In this study, we propose to use cross-linked cyclodextrin-based polymers (ECP) as sorbents to treat three alkylphenols, namely, one nonylphenol (4-n-NP) and two octylphenols (4-n-OP and 4-tert-OP), present in aqueous solution by a batch method. The experiments were carried out with five cyclodextrin polymers (α-ECP, β-ECP, γ-ECP, α,β,γ-ECP, and HP-β-ECP). Sorption results showed that all polymers, with the exception of α-ECP, had high sorption capacities between 60 and 100% of the alkylphenols in the concentration range studied (between 25 and 100 μg/L). In all cases, HP-β-ECP has shown the highest removals, regardless of the structure of the molecule. The order obtained was HP-β-ECP >> β-ECP ~ α,β,γ-ECP >> γ-ECP > α-ECP. The 4-tert-OP compound was the best adsorbed, regardless the material and the solution studied. Sorption results also indicated that (i) the sorption efficiency decreased with the increasing of alkylphenol concentration; (ii) sodium chloride had a strong negative effect on the sorption process; and (iii) the performance remained unchanged after five sorption-regeneration cycles. The main sorption mechanism of alkylphenols occurring in ECP was the inclusion within the cyclodextrin cavities. The obtained results proved that cyclodextrin polymers could serve as efficient sorbents for the removal of alkylphenols from real effluents.
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Affiliation(s)
- Grégorio Crini
- Chrono-environnement, Université Bourgogne Franche-Comté, UMR 6249, 16 route de Gray, 25000, Besançon, France
| | - Corina Bradu
- Chrono-environnement, Université Bourgogne Franche-Comté, UMR 6249, 16 route de Gray, 25000, Besançon, France
- PROTMED Centre, 050663, Bucharest, Romania
| | - Marc Fourmentin
- Laboratoire de Physico-Chimie de l'Atmosphère MREI2, Université du Littoral Côte d'Opale, 189A Avenue Maurice Schumann, 59140, Dunkerque, France
| | - Cesare Cosentino
- Chrono-environnement, Université Bourgogne Franche-Comté, UMR 6249, 16 route de Gray, 25000, Besançon, France
- Istituto di Chimica e Biochimica G. Ronzoni, 81 via G. Colombo, 20133, Milan, Italy
| | - Ana Rita Lado Ribeiro
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias s/n, 4200-465, Porto, Portugal
| | - Nadia Morin-Crini
- Chrono-environnement, Université Bourgogne Franche-Comté, UMR 6249, 16 route de Gray, 25000, Besançon, France.
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Zampieri BDB, Nogueira EW, de Oliveira AJFC, Sánchez-Andrea I, Brucha G. Effects of metals on activity and community of sulfate-reducing bacterial enrichments and the discovery of a new heavy metal-resistant SRB from Santos Port sediment (São Paulo, Brazil). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:922-935. [PMID: 34341933 DOI: 10.1007/s11356-021-15418-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Accepted: 07/08/2021] [Indexed: 06/13/2023]
Abstract
Sulfate-reducing bacteria (SRB) can be used to remove metals from wastewater, sewage, and contaminated areas. However, metals can be toxic to this group of bacteria. Sediments from port areas present abundance of SRB and also metal contamination. Their microbial community has been exposed to metals and can be a good inoculum for isolation of metal-resistant SRB. The objective of the study was to analyze how metals influence activity and composition of sulfate-reducing bacteria. Enrichment cultures were prepared with a different metal (Zn, Cr, Cu, and Cd) range concentration tracking activity of SRB and 16S rRNA sequencing in order to access the community. The SRB activity decreased when there was an increase in the concentration of the metals tested. The highest concentration of metals precipitated were 0.2 mM of Cd, 5.4 mM of Zn, 4.5 mM of Cu, and 9.6 mM of Cr. The more toxic metals were Cd and Cu and had a greater community similarity with less SRB and more fermenters (e.g., Citrobacter and Clostridium). Meanwhile, the enrichments with less toxic metals (Cr and Zn) had more sequences affiliated to SRB genera (mainly Desulfovibrio). A new Desulfovibrio species was isolated. This type of study can be useful to understand the effects of metals in SRB communities and help to optimize wastewater treatment processes contaminated by metals. The new Desulfovibrio species may be important in future studies on bioremediation of neutral pH effluents contaminated by metals.
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Affiliation(s)
- Bruna Del Busso Zampieri
- Department of Biochemistry and Microbiology, Biosciences, Institute, São Paulo State University - Rio Claro Campus (UNESP IB/RC)), Av. 24 A, 1515, Jardim Vila Bela, Rio Claro, São Paulo, 13506-900, Brazil.
| | - Elis Watanabe Nogueira
- Biological Processes Laboratory, São Carlos School of Engineering, University of São Paulo, Av. João Dagnone, 1100, Santa Angelina, São Carlos, São Paulo, 13563-120, Brazil
| | - Ana Julia Fernandes Cardoso de Oliveira
- Biosciences Institute, São Paulo State University - São Paulo State´s Coast Campus (UNESP IB/CLP), Praça Infante Dom Henrique, s/n - Parque Bitaru, São Paulo, 11330-900, Brazil
| | - Irene Sánchez-Andrea
- Department of Agrotechnology and Food Sciences, Wageningen University and Research, Stippeneng 4, 6708WE, Wageningen, Netherlands
| | - Gunther Brucha
- School of Technological Sciences, Federal University of Alfenas (UNIFAL-MG), Minas Gerais, Rodovia Aurélio Vilela, n 11.999 Cidade Universitária, Poços de Caldas, Minas Gerais, 37715400, Brazil
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Chengli Z, Ronghua M, Qi W, Mingrui Y, Rui C, Xiaonan Z. Photocatalytic degradation of organic pollutants in wastewater by heteropolyacids: a review. J COORD CHEM 2021. [DOI: 10.1080/00958972.2021.1940982] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Zhang Chengli
- School of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China
| | - Ma Ronghua
- School of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China
| | - We Qi
- School of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China
| | - Yang Mingrui
- School of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China
| | - Cao Rui
- School of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China
| | - Zong Xiaonan
- School of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China
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Alvarado N, Abarca RL, Linares-Flores C. Two Fascinating Polysaccharides: Chitosan and Starch. Some Prominent Characterizations for Applying as Eco-Friendly Food Packaging and Pollutant Remover in Aqueous Medium. Progress in Recent Years: A Review. Polymers (Basel) 2021; 13:1737. [PMID: 34073343 PMCID: PMC8198307 DOI: 10.3390/polym13111737] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 05/17/2021] [Accepted: 05/19/2021] [Indexed: 11/17/2022] Open
Abstract
The call to use biodegradable, eco-friendly materials is urgent. The use of biopolymers as a replacement for the classic petroleum-based materials is increasing. Chitosan and starch have been widely studied with this purpose: to be part of this replacement. The importance of proper physical characterization of these biopolymers is essential for the intended application. This review focuses on characterizations of chitosan and starch, approximately from 2017 to date, in one of their most-used applications: food packaging for chitosan and as an adsorbent agent of pollutants in aqueous medium for starch.
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Affiliation(s)
- Nancy Alvarado
- Instituto de Ciencias Químicas Aplicadas, Facultad de Ingeniería, Universidad Autónoma de Chile, El Llano Subercaseaux 2801, San Miguel 8900000, Chile
| | - Romina L. Abarca
- Departamento de Ciencias Animales, Facultad de Agronomía e Ingeniería Forestal, Pontificia Universidad Católica de Chile, Macul, Santiago 7820436, Chile;
| | - Cristian Linares-Flores
- Grupo de Investigación en Energía y Procesos Sustentables, Instituto de Ciencias Químicas Aplicadas, Facultad de Ingeniería, Universidad Autónoma de Chile, El Llano Subercaseaux 2801, San Miguel 8900000, Chile;
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11
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Goswami B, Mahanta D. Starch and its Derivatives: Properties and Applications. POLYSACCHARIDES 2021. [DOI: 10.1002/9781119711414.ch12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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12
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Starch-graft-polyacrylamide copolymer /Fe3O4 /graphene oxide nanocomposite: synthesis, characterization, and application as a low-cost adsorbent for Ni (II) from aqueous solutions. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-020-02275-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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13
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Saidi M, Kadkhodayan H. Toxic heavy metal removal from sulfide ores using potassium permanganate: Process development and waste management. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 276:111354. [PMID: 32956940 DOI: 10.1016/j.jenvman.2020.111354] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 08/29/2020] [Accepted: 09/03/2020] [Indexed: 06/11/2023]
Abstract
A monolithic new attitude utilizing Aspen Plus software and Taguchi method has been applied to evaluate a novel configuration for removal of toxic heavy metals during sulfide ores recovery using potassium permanganate (KMnO4). In this new configuration, KMnO4 has been produced by sludge recovery of cobalt purification step containing manganese (IV) oxide (MnO2). Also, in this suggested configuration, the required sulfuric acid (H2SO4) solvent has been provided by recovery of sulfur compounds released during leaching process of sulfide ores. The optimum condition obtained by Taguchi experimental design has been used as initial data for the simulation and sensitivity analysis of process via Aspen Plus software. A systematic study of the design and operating condition has been made for key performance metrics such as removal of toxic heavy metal from sulfide ores, recovery of KMnO4 from sludge containing MnO2 and conversion of released sulfide gases to H2SO4 at the different operating condition such as H2SO4 concentration of 60-90 g/L, operating temperature of 60-150 °C, agitation rate of 100-400 rpm, reaction time of 0.5-2 h, solid to liquid ratio of 1:1-1:4, particle size of 10-500 μm, additive amount of 10-40 wt% and oxygen pressure of 0.5-2 MPa. The optimum condition for removal of toxic heavy metal have been found to be H2SO4 concentration of 70 g/L, temperature of 90 °C, agitation rate of 200 rpm, reaction time of 1.5 h, particle size of 500 μm, solid to liquid ratio of 1:2, additive amount of 40 wt% and oxygen pressure of 1.5 MPa. According to simulation results, the maximum conversion of released sulfide gases to H2SO4, recovery of KMnO4 and toxic heavy metals removal during designed process at optimized condition are 98%, 91% and 99%, respectively.
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Affiliation(s)
- Majid Saidi
- School of Chemistry, College of Science, University of Tehran, PO Box 14155-6455, Tehran, Iran.
| | - Hossein Kadkhodayan
- School of Chemistry, College of Science, University of Tehran, PO Box 14155-6455, Tehran, Iran
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Adsorption Studies on the Removal of Textile Effluent over Two Natural Eco-Friendly Adsorbents. J CHEM-NY 2020. [DOI: 10.1155/2020/6457825] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
This study investigates the possibility of applying an adsorption process using two abundant natural minerals M1 and M2. Without pretreatment or activation, the adsorbents were used to treat real textile wastewater samples (collected from Fez city, Morocco). As a cost-effective alternative, these materials were characterized by different analyses, including X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and X-ray fluorescence (XRF). Chemical oxygen demand (COD) and biological oxygen demand (BOD) were used to characterize the textile wastewater. Additionally, the influence of operating conditions (contact time, adsorbent dosages, and pH) was evaluated. Results show that the adsorption process takes place quickly, reaching the equilibrium at 90 and 160 min for M1 (88% COD) and M2 (79% COD). Both materials show a higher affinity to Cr (39%) and lower affinity to Cu (28%). A pseudo-second-order kinetic model provides the best fit to the experimental adsorption data. Germination tests indicate a low toxicity after the adsorption process. Performance of both materials was compared with that of other literature studies.
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Akinterinwa A, Oladele E, Adebayo A, Gurgur E, Iyanu OO, Ajayi O. Cross-linked-substituted (esterified/etherified) starch derivatives as aqueous heavy metal ion adsorbent: a review. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 82:1-26. [PMID: 32910789 DOI: 10.2166/wst.2020.332] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Starch is a biopolymer with outstanding economic and environmentally friendly attributes which has driven technological innovations to enhance its applications in food and non-food industries. Starch is constituted by O-H groups with valency and electronic characteristics that can initiate adsorption of aqueous heavy metal ions (AHMIs). However, this can be enhanced using various modification sequences. A common procedure is the cross-linking and substitution of the O-H groups via esterification and/or etherification reactions to produce starch derivative adsorbents (SDAs) with improved structural and functional properties for adsorption of AHMIs. The efficiency of SDAs developed using these procedures depends on the botanical source of the native starch base, porosity and structural stability of the derivative (i.e. degree of cross-linking), substituted functional group(s), degree of substitution and the steric/conformation effects of the substituted groups. Many works have been done to optimize these factors, and this review highlighted some of the tailored procedures and the results obtained.
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Affiliation(s)
| | - Ebun Oladele
- Federal University of Technology, Akure, Nigeria
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16
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Morin‐Crini N, Staelens J, Loiacono S, Martel B, Chanet G, Crini G. Simultaneous removal of Cd, Co, Cu, Mn, Ni, and Zn from synthetic solutions on a hemp‐based felt. III. Real discharge waters. J Appl Polym Sci 2020. [DOI: 10.1002/app.48823] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Nadia Morin‐Crini
- UMR 6249 Chrono‐EnvironnementUniversité Bourgogne Franche‐Comté, 16 Route de Gray Besançon 25000 France
| | - Jean‐Noël Staelens
- UMET UMR 8207, Ingénierie des Systèmes PolymèresUniversité de Lille Villeneuve d'Ascq 59655 France
| | - Sonia Loiacono
- UMR 6249 Chrono‐EnvironnementUniversité Bourgogne Franche‐Comté, 16 Route de Gray Besançon 25000 France
| | - Bernard Martel
- UMET UMR 8207, Ingénierie des Systèmes PolymèresUniversité de Lille Villeneuve d'Ascq 59655 France
| | - Gilles Chanet
- Eurochanvre, 7 Route de Dijon Arc‐les‐Gray 70100 France
| | - Grégorio Crini
- UMR 6249 Chrono‐EnvironnementUniversité Bourgogne Franche‐Comté, 16 Route de Gray Besançon 25000 France
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Ceylan Tuncaboylu D, Abdurrahmanoglu S, Gazioglu I. Rheological characterization of starch gels: A biomass based sorbent for removal of polycyclic aromatic hydrocarbons (PAHs). JOURNAL OF HAZARDOUS MATERIALS 2019; 371:406-414. [PMID: 30870645 DOI: 10.1016/j.jhazmat.2019.03.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 02/01/2019] [Accepted: 03/07/2019] [Indexed: 06/09/2023]
Abstract
Environmental awareness increased the demand for the biomass based materials with superior properties instead of petroleum products. This study aims to prepare starch networks as sorbents for the removal of polycyclic aromatic hydrocarbons (PAHs). Two types of crosslinker, epichlorohydrine (ECH) and glutaraldehyde (GA), were choosed for the preparation of Gel-E and Gel-G networks, respectively. Rheological, swelling and morphological properties of the resulted materials were investigated as a function of various reaction parameters as starch, crosslinker and base concentration and also reaction temperature. The rheological measurements showed that while network formation of Gel-E hydrogels was strongly affected by the NaOH and starch concentration, the strength of the Gel-G hydrogels mainly depends on the crosslinker amount. Starch networks showed high PAH sorption capacities up to 1.42 g per gram sorbent with three model PAH molecules. Although PAH sorption capacities of the Gel-E networks are higher than those of Gel-G gels due to the pore sizes differences of the gel samples, both of them are promising materials as biosorbent for the PAH sorption applications due to the relatively high sorption capacities, low cost and simple preparation methods.
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Affiliation(s)
| | | | - Isil Gazioglu
- Bezmialem Vakif University, Faculty of Pharmacy, 34093 Istanbul, Turkey
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18
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Dragan ES, Loghin DFA. Fabrication and characterization of composite cryobeads based on chitosan and starches-g-PAN as efficient and reusable biosorbents for removal of Cu2+, Ni2+, and Co2+ ions. Int J Biol Macromol 2018; 120:1872-1883. [DOI: 10.1016/j.ijbiomac.2018.10.007] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 08/29/2018] [Accepted: 10/01/2018] [Indexed: 12/11/2022]
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19
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Morin-Crini N, Winterton P, Fourmentin S, Wilson LD, Fenyvesi É, Crini G. Water-insoluble β-cyclodextrin–epichlorohydrin polymers for removal of pollutants from aqueous solutions by sorption processes using batch studies: A review of inclusion mechanisms. Prog Polym Sci 2018. [DOI: 10.1016/j.progpolymsci.2017.07.004] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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20
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Ko D, Lee JS, Patel HA, Jakobsen MH, Hwang Y, Yavuz CT, Hansen HCB, Andersen HR. Selective removal of heavy metal ions by disulfide linked polymer networks. JOURNAL OF HAZARDOUS MATERIALS 2017; 332:140-148. [PMID: 28285107 DOI: 10.1016/j.jhazmat.2017.03.007] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 02/28/2017] [Accepted: 03/03/2017] [Indexed: 05/28/2023]
Abstract
Heavy metal contaminated surface water is one of the oldest pollution problems, which is critical to ecosystems and human health. We devised disulfide linked polymer networks and employed as a sorbent for removing heavy metal ions from contaminated water. Although the polymer network material has a moderate surface area, it demonstrated cadmium removal efficiency equivalent to highly porous activated carbon while it showed 16 times faster sorption kinetics compared to activated carbon, owing to the high affinity of cadmium towards disulfide and thiol functionality in the polymer network. The metal sorption mechanism on polymer network was studied by sorption kinetics, effect of pH, and metal complexation. We observed that the metal ions-copper, cadmium, and zinc showed high binding affinity in polymer network, even in the presence of competing cations like calcium in water.
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Affiliation(s)
- Dongah Ko
- Department of Environmental Engineering, Technical University of Denmark, Miljøvej 113, 2800 Kgs. Lyngby, Denmark
| | - Joo Sung Lee
- Graduate School of EEWS, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Hasmukh A Patel
- Department of Chemistry, Northwestern University, Evanston, IL 60208 USA
| | - Mogens H Jakobsen
- Department of Micro and Nano technology, Technical University of Denmark, Ørsteds Plads, 345B, 2800 Kgs. Lyngby, Denmark
| | - Yuhoon Hwang
- Department of Environmental Engineering, Seoul National University of Science and Technology, 232 Gongreung-ro, Nowon-gu, Seoul 01811, Republic of Korea
| | - Cafer T Yavuz
- Graduate School of EEWS, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Hans Chr Bruun Hansen
- Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - Henrik R Andersen
- Department of Environmental Engineering, Technical University of Denmark, Miljøvej 113, 2800 Kgs. Lyngby, Denmark.
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21
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Dithiocarbamate-modified starch derivatives with high heavy metal adsorption performance. Carbohydr Polym 2016; 136:30-7. [DOI: 10.1016/j.carbpol.2015.08.065] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 08/18/2015] [Accepted: 08/21/2015] [Indexed: 11/21/2022]
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22
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Haroon M, Wang L, Yu H, Abbasi NM, Zain-ul-Abdin ZUA, Saleem M, Khan RU, Ullah RS, Chen Q, Wu J. Chemical modification of starch and its application as an adsorbent material. RSC Adv 2016. [DOI: 10.1039/c6ra16795k] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Starch is a biopolymer of plant origin which is cheap, abundant and has many applications in food and non-food industries.
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Karray S, Tastard E, Moreau B, Delahaut L, Geffard A, Guillon E, Denis F, Hamza-Chaffai A, Chénais B, Marchand J. Transcriptional response of stress-regulated genes to industrial effluent exposure in the cockle Cerastoderma glaucum. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:17303-17316. [PMID: 25613800 DOI: 10.1007/s11356-015-4108-4] [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: 08/15/2014] [Accepted: 01/11/2015] [Indexed: 06/04/2023]
Abstract
This study assessed the responses of molecular biomarkers and heavy metal levels in Cerastoderma glaucum exposed for 1 week to two industrial effluents (1%) discharged into the Tunisian coastal area, F1 and F2, produced by different units of production of a phosphate treatment plant. A significant uptake of metals (Cd, Cu, Zn, and Ni) was observed in exposed cockles compared to controls, with an uptake higher for F1 than for F2. A decrease in LT50 (stress on stress test) was also observed after an exposure to the effluent F1. Treatments resulted in different patterns of messenger RNA (mRNA) expression of the different genes tested in this report. Gene transcription monitoring performed on seven genes potentially involved in the tolerance to metal exposure showed that for both exposures, mechanisms are rapidly and synchronically settled down to prevent damage to cellular components, by (1) handling and exporting out metal ions through the up-regulation of ATP-binding cassette xenobiotic transporter (ABCB1) and metallothionein (MT), (2) increasing the mRNA expression of antioxidant enzymes (catalase (CAT), superoxide dismutases, CuZnSOD and MnSOD), (3) protecting and/or repairing proteins through the expression of heat shock protein 70 (HSP70) mRNAs, and (4) increasing ATP production (through the up-regulation of cytochrome c oxidase 1 (CO1)) to provide energy for cells to tolerate stress exposure. The tools developed may be useful both for future control strategies and for the use of the cockle C. glaucum as a sentinel species.
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Affiliation(s)
- Sahar Karray
- EA 2460 Mer Molécules Santé, Institut Universitaire Mer et Littoral - FR3473 CNRS, Université du Maine - Le Mans, 72085, Le Mans Cedex, France
- Laboratoire d'Ecotoxicologie Marine et Environnementale, Université de Sfax, Sfax, Tunisia
| | - Emmanuelle Tastard
- EA 2460 Mer Molécules Santé, Institut Universitaire Mer et Littoral - FR3473 CNRS, Université du Maine - Le Mans, 72085, Le Mans Cedex, France
| | - Brigitte Moreau
- EA 2460 Mer Molécules Santé, Institut Universitaire Mer et Littoral - FR3473 CNRS, Université du Maine - Le Mans, 72085, Le Mans Cedex, France
| | - Laurence Delahaut
- UMR-I 02 Stress Environnementaux et Biosurveillance des Milieux aquatiques (SEBIO), Université de Reims Champagne-Ardenne, Moulin de la Housse, BP 1039, 51687, Reims Cedex 2, France
| | - Alain Geffard
- UMR-I 02 Stress Environnementaux et Biosurveillance des Milieux aquatiques (SEBIO), Université de Reims Champagne-Ardenne, Moulin de la Housse, BP 1039, 51687, Reims Cedex 2, France
| | - Emmanuel Guillon
- UMR 7312 CNRS-URCA Institut de Chimie Moléculaire de Reims (ICMR) Groupe Chimie de Coordination, Université de Reims Champagne-Ardenne, Moulin de la Housse, BP 1039, 51687, Reims Cedex 2, France
| | - Françoise Denis
- EA 2460 Mer Molécules Santé, Institut Universitaire Mer et Littoral - FR3473 CNRS, Université du Maine - Le Mans, 72085, Le Mans Cedex, France
- UMR 7208 CNRS-MNHN-IRD-UPMC, Biologie des Organismes et des Ecosystèmes Aquatiques (BOREA), Concarneau, France
| | - Amel Hamza-Chaffai
- Laboratoire d'Ecotoxicologie Marine et Environnementale, Université de Sfax, Sfax, Tunisia
| | - Benoît Chénais
- EA 2460 Mer Molécules Santé, Institut Universitaire Mer et Littoral - FR3473 CNRS, Université du Maine - Le Mans, 72085, Le Mans Cedex, France
| | - Justine Marchand
- EA 2460 Mer Molécules Santé, Institut Universitaire Mer et Littoral - FR3473 CNRS, Université du Maine - Le Mans, 72085, Le Mans Cedex, France.
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Bazrafshan E, Mohammadi L, Ansari-Moghaddam A, Mahvi AH. Heavy metals removal from aqueous environments by electrocoagulation process- a systematic review. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2015; 13:74. [PMID: 26512324 PMCID: PMC4624377 DOI: 10.1186/s40201-015-0233-8] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2015] [Accepted: 10/19/2015] [Indexed: 12/07/2022]
Abstract
Heavy metals pollution has become a more serious environmental problem in the last several decades as a result releasing toxic materials into the environment. Various techniques such as physical, chemical, biological, advanced oxidation and electrochemical processes were used for the treatment of domestic, industrial and agricultural effluents. The commonly used conventional biological treatments processes are not only time consuming but also need large operational area. Accordingly, it seems that these methods are not cost-effective for effluent containing toxic elements. Advanced oxidation techniques result in high treatment cost and are generally used to obtain high purity grade water. The chemical coagulation technique is slow and generates large amount of sludge. Electrocoagulation is an electrochemical technique with many applications. This process has recently attracted attention as a potential technique for treating industrial wastewater due to its versatility and environmental compatibility. This process has been applied for the treatment of many kinds of wastewater such as landfill leachate, restaurant, carwash, slaughterhouse, textile, laundry, tannery, petroleum refinery wastewater and for removal of bacteria, arsenic, fluoride, pesticides and heavy metals from aqueous environments. The objective of the present manuscript is to review the potential of electrocoagulation process for the treatment of domestic, industrial and agricultural effluents, especially removal of heavy metals from aqueous environments. About 100 published studies (1977-2016) are reviewed in this paper. It is evident from the literature survey articles that electrocoagulation are the most frequently studied for the treatment of heavy metal wastewater.
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Affiliation(s)
- Edris Bazrafshan
- />Health Promotion Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Leili Mohammadi
- />Health Promotion Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | | | - Amir Hossein Mahvi
- />Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
- />Center for Solid Waste Research, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran
- />National Institute of Health Research, Tehran University of Medical Sciences,, Tehran, Iran
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25
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Richards RM, Gómez I, Otazo-Sánchez EM, Prieto F, Hernández-Ávila J, Linares G, González CA, Gordillo AJ, Villagómez R. High Mn2+Uptake by a New Polyvinyl Alcohol Derivative: Isotherm Model Analysis. SEP SCI TECHNOL 2015. [DOI: 10.1080/01496395.2014.950278] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Dragan ES, Apopei Loghin DF, Cocarta AI. Efficient sorption of Cu(2+) by composite chelating sorbents based on potato starch-graft-polyamidoxime embedded in chitosan beads. ACS APPLIED MATERIALS & INTERFACES 2014; 6:16577-92. [PMID: 25191990 DOI: 10.1021/am504480q] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Ionic composites based on cross-linked chitosan (CS) as matrix and poly(amidoxime) grafted on potato starch (AOX) as entrapped chelating resin were prepared as beads, for the first time in this work, by two strategies: (1) thorough mixing of previously prepared AOX in the CS solution followed by the bead formation and (2) thorough mixing of the potato starch-g-poly(acrylonitrile) (PS-g-PAN) copolymer in the initial CS solution, followed by bead formation, the amidoximation of the nitrile groups taking place inside the beads. Ionotropic gelation in tripolyphosphate was used to obtain the composite beads, and in situ covalent cross-linking by epichlorohydrin was carried out to stabilize the beads in the acidic pH range. Fourier transform infrared spectroscopy and the swelling ratio values in the acidic pH range confirmed the influence of the synthesis strategy on the structure of the CS/AOX composites. Scanning electron microscopy was employed to reveal the morphology of the novel composites, both before and after their loading with Cu(2+). The binding capacity of Cu(2+) ions as a function of sorbent composition, synthesis strategy, pH, sorbent dose, contact time, initial concentration of Cu(2+), and temperature was examined in batch mode. The main difference between the composites prepared with the two strategies consisted of the higher sorption capacity and the much faster settlement of the equilibrium sorption for the composite prepared by the in situ amidoximation of PS-g-PAN. The Langmuir, Freundlich, Temkin, Dubinin-Radushkevich, and Sips isotherms were applied to fit the sorption equilibrium data. The maximum equilibrium sorption capacity, qm, evaluated by the Langmuir model at 25 °C was 133.15 mg Cu(2+)/g for the CS/AOX composite beads prepared with the first strategy and 238.14 mg Cu(2+)/g for the CS/AOX composite beads prepared with the second strategy, at the same AOX content. The pseudo-second order kinetic model well fitted the sorption kinetics data, supporting chemisorption as the mechanism of interaction between the chelating composites and the Cu(2+) ions. The CS/AOX composite sorbents could be reused up to five sorption/desorption cycles with no significant decrease in Cu(2+) sorption capacity.
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Affiliation(s)
- Ecaterina Stela Dragan
- "Petru Poni" Institute of Macromolecular Chemistry , Grigore Ghica Voda Alley 41 A, Iasi 700487, Romania
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Charles J, Crini G, Degiorgi F, Sancey B, Morin-Crini N, Badot PM. Unexpected toxic interactions in the freshwater amphipod Gammarus pulex (L.) exposed to binary copper and nickel mixtures. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:1099-1111. [PMID: 23872894 DOI: 10.1007/s11356-013-1978-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Accepted: 07/02/2013] [Indexed: 06/02/2023]
Abstract
To document the toxicity of copper and nickel in binary mixtures, freshwater amphipods Gammarus pulex were exposed to the metals given independently or as mixtures. Toxicity to Cu alone was relatively high: 96-h LC10 and LC50 were found at 91 and 196 μg L(-1), respectively. Toxicity to Ni alone was very low, with 96-h LC10 and LC50 of 44,900 and 79,200 μg L(-1), respectively. Mixture toxicities were calculated from single toxicity data using conventional models. Modeled toxicity was then compared with the measured toxicity of the binary mixture. Two kinds of mixtures were tested. Type I mixtures were designed as combinations of Cu and Ni given at the same effect concentrations, when taken independently, to identify possible interactions between copper and nickel. In type II mixtures, Cu concentrations varied from 0 to 600 μg L(-1) while the nickel concentration was kept constant at 500 μg L(-1) to mimic conditions of industrial wastewater discharges. Ni and Cu showed synergic effects in type I mixtures while type II mixtures revealed antagonistic effects. Low doses of Ni reduced Cu toxicity towards G. pulex. These results show that even for simple binary mixtures of contaminants with known chemistry and toxicity, unexpected interactions between the contaminants may occur. This reduces the reliability of conventional additivity models.
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Affiliation(s)
- Jérémie Charles
- UMR CNRS 6249 USC INRA Chrono-Environnement, Université de Franche-Comté, Place Leclerc, 25030, Besançon, France
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