1
|
Reizabal A, Costa CM, Saiz PG, Gonzalez B, Pérez-Álvarez L, Fernández de Luis R, Garcia A, Vilas-Vilela JL, Lanceros-Méndez S. Processing Strategies to Obtain Highly Porous Silk Fibroin Structures with Tailored Microstructure and Molecular Characteristics and Their Applicability in Water Remediation. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123675. [PMID: 32846265 DOI: 10.1016/j.jhazmat.2020.123675] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 08/05/2020] [Accepted: 08/07/2020] [Indexed: 06/11/2023]
Abstract
The present work reports on the control of silk fibroin (SF) porous structures performance through various processing methods. The study includes the analysis of two dissolving techniques (CaCl2/H2O/EtOH ternary and LiBr/H2O binary solutions), three regeneration methods (gelation, lyophilization and gas foaming) and one post-processing (EtOH). In all the cases, followed steps lead to SF structures with porosity values above 94% and large surface areas. Also, results about samples microstructure, secondary organization, crystallinity and water behavior, reveal a direct correlation between processing and SF properties. Thanks to the achieved progress, the SF varying porous structures were evaluated for metalloids (As5+ and As3+) and heavy metals (Cr6+ and Cr3+) adsorption, observing a direct relationship between samples processing and ionic species adsorption ability. Thus, it is shown that the control of the properties of SF based porous structures through processing, represents a suitable and ecofriendly approach for the development of bio-based materials for environmental applications.
Collapse
Affiliation(s)
- A Reizabal
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940, Leioa, Spain; Departamento de Química Física, Facultad de Ciencia y Tecnología, Universidad del País Vasco/EHU, Apdo. 644, Bilbao, Spain.
| | - C M Costa
- Centro de Física, Universidade do Minho, 4710-057, Braga, Portugal; Centro de Química, Universidade do Minho, 4710-057, Braga, Portugal
| | - P G Saiz
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940, Leioa, Spain
| | - B Gonzalez
- Advanced Mining Technology Center (AMTC), Universidad de Chile, Av. Tupper 2007, Santiago, 8370451, Chile
| | - L Pérez-Álvarez
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940, Leioa, Spain; Departamento de Química Física, Facultad de Ciencia y Tecnología, Universidad del País Vasco/EHU, Apdo. 644, Bilbao, Spain
| | - R Fernández de Luis
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940, Leioa, Spain
| | - A Garcia
- Advanced Mining Technology Center (AMTC), Universidad de Chile, Av. Tupper 2007, Santiago, 8370451, Chile
| | - J L Vilas-Vilela
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940, Leioa, Spain; Departamento de Química Física, Facultad de Ciencia y Tecnología, Universidad del País Vasco/EHU, Apdo. 644, Bilbao, Spain
| | - S Lanceros-Méndez
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940, Leioa, Spain; Ikerbasque, Basque Foundation for Science, 48013, Bilbao, Spain
| |
Collapse
|
2
|
Gökçe Kocabay Ö, İsmail O. Acrylamide based hydrogels in swelling and uptake of methylene blue from aqueous solutions. MAIN GROUP CHEMISTRY 2020. [DOI: 10.3233/mgc-190818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Özlem Gökçe Kocabay
- Department of Chemical Engineering, Faculty of Chemical and Metallurgical Engineering, Yildiz Technical University, Davutpasa Campus, Esenler, İstanbul, Turkey
- T.R. Ministry of Culture and Tourism, İstanbul, Turkey
| | - Osman İsmail
- Department of Chemical Engineering, Faculty of Chemical and Metallurgical Engineering, Yildiz Technical University, Davutpasa Campus, Esenler, İstanbul, Turkey
| |
Collapse
|
3
|
Zhao J, Gao W, Qin XZ, He MC. First-principles study on adsorption behavior of as on the kaolinite (001) and (00$$\bar {1}$$) surfaces. ADSORPTION 2020. [DOI: 10.1007/s10450-019-00194-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
4
|
Gökçe Kocabay Ö, İsmail O. Acrylamide based hydrogels in swelling and uptake of methylene blue from aqueous solutions. MAIN GROUP CHEMISTRY 2019. [DOI: 10.3233/mgc-180765] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Özlem Gökçe Kocabay
- Department of Chemical Engineering, Faculty of Chemical and Metallurgical Engineering, Yıldız Technical University, Davutpasa Campus, İstanbul, Turkey
- T.R. Ministry of Culture and Tourism, İstanbul, Turkey
| | - Osman İsmail
- Department of Chemical Engineering, Faculty of Chemical and Metallurgical Engineering, Yıldız Technical University, Davutpasa Campus, İstanbul, Turkey
| |
Collapse
|
5
|
Nisticò R, Celi LR, Bianco Prevot A, Carlos L, Magnacca G, Zanzo E, Martin M. Sustainable magnet-responsive nanomaterials for the removal of arsenic from contaminated water. JOURNAL OF HAZARDOUS MATERIALS 2018; 342:260-269. [PMID: 28843795 DOI: 10.1016/j.jhazmat.2017.08.034] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2017] [Revised: 08/11/2017] [Accepted: 08/13/2017] [Indexed: 06/07/2023]
Abstract
In this study, chitosan and bio-based substances (BBS) obtained from composted biowaste were used as stabilizers for the synthesis of magnet-sensitive nanoparticles (NPs) via coprecipitation method. A pyrolysis treatment was carried out on both biopolymers at 550°C, and their consequent conversion into a carbon matrix was followed by means of different physicochemical characterization techniques (mainly FTIR spectroscopy and XRD), whereas magnetic properties were evaluated by magnetization curves. The prepared materials were tested in water remediation processes from arsenic (As) species (both inorganic and organic forms). These tests, explained by means of the most common adsorption models, evidenced that the best performances were reached by both materials obtained after pyrolysis treatments, pointing out the promising application of such magnet-sensitive materials as easy-recoverable tools for water purification treatments.
Collapse
Affiliation(s)
- Roberto Nisticò
- University of Torino, Department of Chemistry, Via P. Giuria 7, 10125 Torino, Italy; Polytechnic of Torino, Department of Applied Science and Technology DISAT, C.so Duca Degli Abruzzi 24, 10129 Torino, Italy.
| | - Luisella R Celi
- University of Torino, Department of Agricultural, Forest and Food Sciences, Soil Biogeochemistry, Largo Paolo Braccini 2, 10095 Grugliasco, Italy
| | | | - Luciano Carlos
- Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas, PROBIEN (CONICET-UNCo), Buenos Aires 1400, Neuquén, Argentina
| | - Giuliana Magnacca
- University of Torino, Department of Chemistry, Via P. Giuria 7, 10125 Torino, Italy; NIS (Nanostructured Interphases and Surfaces) Centre, Via P. Giuria 7, 10125 Torino, Italy
| | - Elena Zanzo
- University of Torino, Department of Agricultural, Forest and Food Sciences, Soil Biogeochemistry, Largo Paolo Braccini 2, 10095 Grugliasco, Italy
| | - Maria Martin
- University of Torino, Department of Agricultural, Forest and Food Sciences, Soil Biogeochemistry, Largo Paolo Braccini 2, 10095 Grugliasco, Italy
| |
Collapse
|
6
|
Joshi TP, Zhang G, Cheng H, Liu R, Liu H, Qu J. Transformation of para arsanilic acid by manganese oxide: Adsorption, oxidation, and influencing factors. WATER RESEARCH 2017; 116:126-134. [PMID: 28329708 DOI: 10.1016/j.watres.2017.03.028] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 03/08/2017] [Accepted: 03/11/2017] [Indexed: 06/06/2023]
Abstract
Aromatic organoarsenic compounds tend to transform into more mobile toxic inorganic arsenic via several processes, and can inadvertently spread toxic inorganic arsenic through the environment to water sources. To gain insight into the transformation mechanisms, we herein investigated how the process of para arsanilic acid (p-ASA) transformation works in detail on the surface of adsorbents by comparing it with phenylarsonic acid (PA) and aniline, which have similar chemical structures. In contrast to the values of 0.23 mmol g-1 and 0.68 mmol g-1 for PA and aniline, the maximum adsorption capacity was determined to be 0.40 mmol g-1 for p-ASA at pH 4.0. The results of FTIR and XPS spectra supported the presence of a protonated amine, resulting in a suitable condition for the oxidation of p-ASA. Based on the combined results of UV-spectra and UPLC-Q-TOF-MS, we confirmed that the adsorbed p-ASA was first oxidized through the transfer of one electron from p-ASA on MnO2 surface to form a radical intermediate, which through further hydrolysis and coupling led to formation of benzoquinone and azophenylarsonic acid, which was identified as a major intermediate. After that, p-ASA radical intermediate was cleaved to form arsenite (III), and then further oxidized into arsenate (V) with the release of manganese (Mn) into solution, indicating a heterogeneous oxidation process.
Collapse
Affiliation(s)
- Tista Prasai Joshi
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Gong Zhang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Hanyang Cheng
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ruiping Liu
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Huijuan Liu
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jiuhui Qu
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| |
Collapse
|
7
|
Zafar M, Van Vinh N, Behera SK, Park HS. Ethanol mediated As(III) adsorption onto Zn-loaded pinecone biochar: Experimental investigation, modeling, and optimization using hybrid artificial neural network-genetic algorithm approach. J Environ Sci (China) 2017; 54:114-125. [PMID: 28391919 DOI: 10.1016/j.jes.2016.06.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Revised: 05/30/2016] [Accepted: 06/16/2016] [Indexed: 06/07/2023]
Abstract
Organic matters (OMs) and their oxidization products often influence the fate and transport of heavy metals in the subsurface aqueous systems through interaction with the mineral surfaces. This study investigates the ethanol (EtOH)-mediated As(III) adsorption onto Zn-loaded pinecone (PC) biochar through batch experiments conducted under Box-Behnken design. The effect of EtOH on As(III) adsorption mechanism was quantitatively elucidated by fitting the experimental data using artificial neural network and quadratic modeling approaches. The quadratic model could describe the limiting nature of EtOH and pH on As(III) adsorption, whereas neural network revealed the stronger influence of EtOH (64.5%) followed by pH (20.75%) and As(III) concentration (14.75%) on the adsorption phenomena. Besides, the interaction among process variables indicated that EtOH enhances As(III) adsorption over a pH range of 2 to 7, possibly due to facilitation of ligand-metal(Zn) binding complexation mechanism. Eventually, hybrid response surface model-genetic algorithm (RSM-GA) approach predicted a better optimal solution than RSM, i.e., the adsorptive removal of As(III) (10.47μg/g) is facilitated at 30.22mg C/L of EtOH with initial As(III) concentration of 196.77μg/L at pH5.8. The implication of this investigation might help in understanding the application of biochar for removal of various As(III) species in the presence of OM.
Collapse
Affiliation(s)
- Mohd Zafar
- Center for Clean Technology and Resource Recycling, University of Ulsan, Ulsan 680749, South Korea; Department of Applied Biotechnology, Sur College of Applied Sciences, Sur 411, Al Shariya, Sultanate of Oman
| | - N Van Vinh
- Department of Civil and Environmental Engineering, University of Ulsan, Ulsan 680749, South Korea
| | - Shishir Kumar Behera
- Center for Clean Technology and Resource Recycling, University of Ulsan, Ulsan 680749, South Korea; Chemical Engineering Department, GMR Institute of Technology, Rajam 532127, Srikakulam Dist., India
| | - Hung-Suck Park
- Center for Clean Technology and Resource Recycling, University of Ulsan, Ulsan 680749, South Korea; Department of Civil and Environmental Engineering, University of Ulsan, Ulsan 680749, South Korea.
| |
Collapse
|
8
|
Min LL, Zhong LB, Zheng YM, Liu Q, Yuan ZH, Yang LM. Functionalized chitosan electrospun nanofiber for effective removal of trace arsenate from water. Sci Rep 2016; 6:32480. [PMID: 27572634 PMCID: PMC5004125 DOI: 10.1038/srep32480] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Accepted: 08/08/2016] [Indexed: 01/09/2023] Open
Abstract
An environment-friendly iron functionalized chitosan elctrospun nanofiber (ICS-ENF) was synthesized for trace arsenate removal from water. The ICS-ENF was fabricated by electrospinning a mixture of chitosan, PEO and Fe(3+) followed by crosslinking with ammonia vapor. The physicochemical properties of ICS-ENF were characterized by FESEM, TEM-EDX and XRD. The ICS-ENF was found to be highly effective for As(V) adsorption at neutral pH. The As(V) adsorption occurred rapidly and achieved equilibrium within 100 min, which was well fitted by pseudo-second-order kinetics model. The As(V) adsorption decreased with increased ionic strength, suggesting an outer-sphere complexation of As(V) on ICS-ENF. Freundlich model well described the adsorption isotherm, and the maximum adsorption capacity was up to 11.2 mg/g at pH 7.2. Coexisting anions of chloride and sulfate showed negligible influence on As(V) removal, but phosphate and silicate significantly reduced As(V) adsorption by competing for adsorption sites. FTIR and XPS analysis demonstrated -NH, -OH and C-O were responsible for As(V) uptake. ICS-ENF was easily regenerated using 0.003 M NaOH, and the removal rate remained above 98% after ten successively adsorption-desorption recycles. This study extends the potential applicability of electrospun nanofibers for water purification and provides a promising approach for As(V) removal from water.
Collapse
Affiliation(s)
- Ling-Li Min
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lu-Bin Zhong
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Yu-Ming Zheng
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Qing Liu
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhi-Huan Yuan
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Li-Ming Yang
- Department of Chemical & Biomolecular Engineering, National University of Singapore, 21 Lower Kent Ridge Road, 119077, Singapore
| |
Collapse
|
9
|
Zirconium/PVA modified flat-sheet PVDF membrane as a cost-effective adsorptive and filtration material: A case study on decontamination of organic arsenic in aqueous solutions. J Colloid Interface Sci 2016; 477:191-200. [PMID: 27267042 DOI: 10.1016/j.jcis.2016.04.043] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 04/25/2016] [Accepted: 04/26/2016] [Indexed: 11/20/2022]
Abstract
Organic arsenic in waters has been a global concern in drinking water due to its higher toxicity to humans. In this study, a novel zirconium/polyvinyl alcohol (PVA) modified polyvinylidene fluoride (PVDF) membrane was applied to remove organic arsenic from water. The impregnation of zirconium ions within the modified membrane was attributed to the coordination reactions among the zirconium ions, ether and hydroxyl groups. The synthesized membrane worked better at the acidic conditions and achieved the optimal uptake for both monomethylarsonic (MMA) and dimethylarsinic (DMA) at pH 2.0. The adsorption isotherm study demonstrated that the adsorption of both organic arsenic species was controlled by the mono-layer adsorption process; the maximum adsorption capacities for MMA and DMA were 73.04 and 37.53mg/g at pH 2, and 29.78 and 19.03mg/g at pH 7.0, respectively. The presence of humic acid had a negligible impact on the uptake of organic arsenic, whereas varying impacts on the arsenic adsorption were observed due to the presence of coexisting anions such as fluoride, phosphate, carbonate and silicate. A single piece of membrane with a surface area of only 12.56cm(2) could treat 7.5-L MMA and 4.1-L DMA solution with an influent concentration of about 100μg/L to meet the WHO and USEPA standard of 10μg/L. Based on the XPS analyses, the ion exchange reaction between chloride ions on the membrane surface and organic arsenic species was responsible for the removal of both MMA and DMA.
Collapse
|
10
|
Sanyang M, Ghani WAWAK, Idris A, Ahmad MB. Hydrogel biochar composite for arsenic removal from wastewater. DESALINATION AND WATER TREATMENT 2016; 57:3674-3688. [DOI: 10.1080/19443994.2014.989412] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|
11
|
Rivas BL, Sánchez J, Urbano BF. Polymers and nanocomposites: synthesis and metal ion pollutant uptake. POLYM INT 2015. [DOI: 10.1002/pi.5035] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Bernabé L Rivas
- Polymer Department, Faculty of Chemistry; University of Concepción; Casilla 160-C Concepción Chile
| | - Julio Sánchez
- Polymer Department, Faculty of Chemistry; University of Concepción; Casilla 160-C Concepción Chile
| | - Bruno F Urbano
- Polymer Department, Faculty of Chemistry; University of Concepción; Casilla 160-C Concepción Chile
| |
Collapse
|
12
|
Valeeva FG, Vasilieva EA, Gaynanova GA, Kashapov RR, Zakharov SV, Kuryashov DA, Lukashenko SS, Bashkirtseva NY, Zakharova LY. Supramolecular systems based on hydrotropes, their analogues and mixtures with typical surfactants. Structural behavior, enhanced solubilization and viscosity properties. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2014.12.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
13
|
Yu Y, Wang C, Guo X, Paul Chen J. Modification of carbon derived from Sargassum sp. by lanthanum for enhanced adsorption of fluoride. J Colloid Interface Sci 2015; 441:113-20. [PMID: 25498487 DOI: 10.1016/j.jcis.2014.10.039] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2014] [Revised: 10/21/2014] [Accepted: 10/23/2014] [Indexed: 10/24/2022]
Abstract
Excessive fluoride in water causes serious environmental issues and adverse impacts on human health. In this study, an innovative lanthanum-modified carbon (LMC) adsorbent rooted in Sargassum sp. was developed for fluoride removal. Excellent removal efficiency was observed over a wide pH range of 3-9. Almost 90% of fluoride adsorption occurred within the first 1h; the equilibrium was established within 4h. The maximum adsorption capacity of LMC could reach 94.34 mg/g at neutral pH, much higher than many commercial adsorbents. Although the presence of such competitive anions as SiO3(2-), SO4(2-), HCO3(-), PO4(3-) and AsO3(-) had certain interference on fluoride uptake, it was noticed that there was no significant impact in the presence of humic acid. Furthermore, according to the instrumental analysis, the fluoride removal was majorly controlled by outer-sphere complex adsorption, while electrostatic attraction and ion exchange mechanisms could also be observed in the fluoride adsorption process. The findings from this study suggest that our adsorbent may have a great potential in industrial applications.
Collapse
Affiliation(s)
- Yang Yu
- Department of Civil and Environmental Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, Singapore
| | - Chenghong Wang
- Department of Civil and Environmental Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, Singapore
| | - Xue Guo
- Department of Civil and Environmental Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, Singapore
| | - J Paul Chen
- Department of Civil and Environmental Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, Singapore.
| |
Collapse
|
14
|
Ravi S, Roshan R, Tharun J, Park DW, Chun HH, Park H, Selvaraj M. Mesoporous silica-giant particle with slit pore arrangement as an adsorbent for heavy metal oxyanions from aqueous medium. RSC Adv 2015. [DOI: 10.1039/c4ra12175a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A newly synthesized giant mesoporous silica particle has been used for arsenate and chromate adsorption studies.
Collapse
Affiliation(s)
- Seenu Ravi
- School of Chemical and Biomolecular Engineering
- Pusan National University
- Busan 609-735
- Korea
| | - Roshith Roshan
- School of Chemical and Biomolecular Engineering
- Pusan National University
- Busan 609-735
- Korea
| | - Jose Tharun
- School of Chemical and Biomolecular Engineering
- Pusan National University
- Busan 609-735
- Korea
| | - Dae-Won Park
- School of Chemical and Biomolecular Engineering
- Pusan National University
- Busan 609-735
- Korea
| | - Ho-Hwan Chun
- Global Core Research Centre for Ships and Offshore Plants
- Pusan National University
- Busan 609-735
- Korea
| | - Hyun Park
- Global Core Research Centre for Ships and Offshore Plants
- Pusan National University
- Busan 609-735
- Korea
| | - Manickam Selvaraj
- School of Chemical and Biomolecular Engineering
- Pusan National University
- Busan 609-735
- Korea
| |
Collapse
|
15
|
Arsenic Adsorption onto Minerals: Connecting Experimental Observations with Density Functional Theory Calculations. MINERALS 2014. [DOI: 10.3390/min4020208] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|
16
|
Shinde RN, Pandey AK, Acharya R, Guin R, Das SK, Rajurkar NS, Pujari PK. Chitosan-transition metal ions complexes for selective arsenic(V) preconcentration. WATER RESEARCH 2013; 47:3497-3506. [PMID: 23622983 DOI: 10.1016/j.watres.2013.03.059] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Revised: 03/29/2013] [Accepted: 03/31/2013] [Indexed: 06/02/2023]
Abstract
Chitosan is naturally occurring bio-polymer having strong affinity towards transition metal ions. Chitosan complexed with transition metal ions takes up inorganic arsenic anions from aqueous medium. In present work, As(V) sorption in the chitosan complexed with different metal ions like Cu(II), Fe(III), La(III), Mo(VI) and Zr(IV) were studied. Sorptions of As(V) in CuS embedded chitosan, (3-aminopropyl) triethoxysilane (APTS) embedded chitosan, epichlorohydrin (ECH) crosslinked chitosan and pristine chitosan were also studied. (74)As radiotracer was prepared specifically for As(V) sorption studies by irradiation of natural germanium target with 18 MeV proton beam. The sorption studies indicated that Fe(III) and La(III) complexed with chitosan sorbed 95 ± 2% As(V) from aqueous samples in the pH range of 3-9. However, Fe(III)-chitosan showed better sorption efficiency (91 ± 2%) for As(V) from seawater than La(III)-chitosan (80 ± 2%). Therefore, Fe(III)-chitosan was selected to prepare the self-supported membrane and poly(propylene) fibrous matrix supported sorbent. The experimental As(V) sorption capacities of the fibrous and self-supported Fe(III)-chitosan sorbents were found to be 51 and 109 mg g(-1), respectively. These materials were characterized by XRD, SEM and EDXRF, and used for preconcentration of As(V) in aqueous media like tap water, ground water and seawater. To quantify the As(V) preconcentrated in Fe(III)-chitosan, the samples were subjected to instrumental neutron activation analysis (INAA) using reactor neutrons. As(V) separations were carried out using a two compartments permeation cell for the self-supported membrane and flow cell using the fibrous sorbent. The total preconcentration of arsenic content was also explored by converting As(III) to As(V).
Collapse
Affiliation(s)
- Rakesh N Shinde
- Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | | | | | | | | | | | | |
Collapse
|
17
|
Yang T, Liu JW, Gu C, Chen ML, Wang JH. Expression of arsenic regulatory protein in Escherichia coli for selective accumulation of methylated arsenic species. ACS APPLIED MATERIALS & INTERFACES 2013; 5:2767-2772. [PMID: 23484908 DOI: 10.1021/am400578y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
ArsR is a metalloregulatory protein with high selectivity and affinity toward arsenic. We hereby report the expression of ArsR in Escherichia coli by cell engineering, which significantly enhances the adsorption/accumulation capacity of methylated arsenic species. The ArsR-expressed E. coli cells (denoted as E. coli-ArsR) give rise to 5.6-fold and 3.4-fold improvements on the adsorption/accumulation capacity for monomethylarsonic acid (MMA) and dimethylarsinic acid (DMA), with respect to native E. coli cells. The uptake of MMA and DMA by the E. coli-ArsR is a fast process fitting Langmuir adsorption model. It is interesting to note that the accumulation of methylated arsenic is virtually not affected by the presence of competing heavy-metal species, at least 10 times of Cd(II) and Pb(II) are tolerated for the adsorption of 1 mg L(-1) methylated arsenic. In addition, an ionic strength of up to 2 g L(-1) Na+ poses no obvious effect on the sorption of 1 mg L(-1) MMA and DMA. Furthermore, the accumulation of MMA and DMA is less sensitive to the variation of pH value, with respect to the blank control cells. Consequently, 82.4% of MMA and 96.3% of DMA at a concentration of 50 μg L(-1) could be readily removed from aqueous medium by 12 g L(-1) of E. coli-ArsR . This illustrates a great potential for the E. coli-ArsR for selective remediation of methylated arsenic species in waters, even in the presence of a high concentration of salts.
Collapse
Affiliation(s)
- Ting Yang
- Research Center for Analytical Sciences, College of Sciences, Box 332, Northeastern University, Shenyang 110819, People's Republic of China
| | | | | | | | | |
Collapse
|
18
|
Shinde RN, Das S, Acharya R, Rajurkar NS, Pandey AK. Iron-complexed adsorptive membrane for As(V) species in water. JOURNAL OF HAZARDOUS MATERIALS 2012; 233-234:131-139. [PMID: 22835769 DOI: 10.1016/j.jhazmat.2012.07.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2012] [Revised: 06/28/2012] [Accepted: 07/01/2012] [Indexed: 06/01/2023]
Abstract
Selective preconcentration of a target analyte in the solid phase is an effective route not only to enhance detection limit of the conventional analytical method but also for elimination of interfering matrix. An adsorptive membrane was developed for selective preconcentration and quantification of ultra-trace (ppb) amounts of As(V) present in a variety of aqueous samples. The precursor membrane was prepared by UV-initiator induced graft polymerization of sulphate and phosphate bearing monomers (1:1 mol proportion) in pores of the host microporous poly(propylene) membrane. Fe(3+) ions were loaded in the precursor membrane to make it selective for As(V) ions. The presence of phosphate functional groups prevent leaching of Fe(3+) ions from the membrane when it comes in contact with solution like seawater having high ionic strength. The optimized membrane was characterized in terms of its physical structure, chemical structure and experimental conditions affecting As(V) uptake in the membrane. The possibility of quantifying total preconcentration of As content was also explored by converting As(III) to As(V). To quantify As(V), the membrane samples were subjected to instrumental neutron activation analysis (INAA). The studies carried in the present work showed that quantification of inorganic arsenic species in natural water samples is easily possible in 2-3 ppb concentration range.
Collapse
Affiliation(s)
- Rakesh N Shinde
- Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India
| | | | | | | | | |
Collapse
|
19
|
Removal of methylated arsenic using a nanostructured zirconia-based sorbent: Process performance and adsorption chemistry. J Colloid Interface Sci 2012; 367:362-9. [DOI: 10.1016/j.jcis.2011.10.007] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2011] [Revised: 09/27/2011] [Accepted: 10/03/2011] [Indexed: 11/23/2022]
|
20
|
Issa NB, Rajaković-Ognjanović VN, Marinković AD, Rajaković LV. Separation and determination of arsenic species in water by selective exchange and hybrid resins. Anal Chim Acta 2011; 706:191-8. [DOI: 10.1016/j.aca.2011.08.015] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2011] [Revised: 07/28/2011] [Accepted: 08/08/2011] [Indexed: 10/17/2022]
|
21
|
Wei YT, Zheng YM, Chen JP. Functionalization of regenerated cellulose membrane via surface initiated atom transfer radical polymerization for boron removal from aqueous solution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:6018-6025. [PMID: 21510669 DOI: 10.1021/la200154y] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
In this study, an adsorptive membrane was prepared for efficient boron removal. Poly(glycidyl methacrylate) was grafted on the surfaces of the regenerated cellulose (RC) membrane via surface-initiated atom transfer radical polymerization, and N-methylglucamine was used to further react with epoxide rings to introduce polyhydroxyl functional groups, which served as the major binding sites for boron. The pristine and modified membranes were characterized by X-ray photoelectron spectroscopy (XPS), attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FTIR), dynamic water contact angle measurement, and scanning electron microscopy. It was shown that the designed functional groups were successfully grafted onto the RC membrane, and surface modification contributed to higher boron binding capability. The optimal pH range for boron adsorption was 4-8. Under a neutral pH condition, the maximum adsorption capacity of the modified membrane was determined to be 0.75 mmol/g, which was comparable with those of commercial resins. Studies of electrolyte influence indicated the formation of inner-sphere surface complexes on the membrane surface. The ATR-FTIR and XPS analyses showed that secondary alcohol and tertiary amine groups were mainly involved in boron adsorption, and tetrahedral boron complexes were found on the membrane surface.
Collapse
Affiliation(s)
- Yu-Ting Wei
- Department of Civil and Environmental Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260
| | | | | |
Collapse
|