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Deb H, Hasan MK, Islam MZ, Yang S, Zhang Y, Yao J. Deep analysis of adsorption isotherm for rapid sorption of Acid Blue 93 and Reactive Red 195 on reactive graphene. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-31918-w. [PMID: 38305963 DOI: 10.1007/s11356-024-31918-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 01/02/2024] [Indexed: 02/03/2024]
Abstract
Graphene-based adsorbent was prepared by adopting a green synthetic route via the chemical exfoliation of graphite and low-temperature thermal activation. Prepared reactive graphene (RG) was characterized through various techniques, and its adsorption capabilities for textile dye removal were investigated for Acid Blue-93 (AB) and Reactive Red-195 (RR) under different operational conditions. The dye sorption equilibrium and mechanism were comprehensively studied using isotherm and kinetic models and compared statistically to explain the sorption behavior. Results show AB and RR adsorption by RG attains equilibrium in 60 min and 70 min, with a high sorption quantity of 397 mg g-1 and 262 mg g-1 (initial dye concentration of 100 mg L-1), respectively. The dye sorption anticipates that the high surface area (104.52 m2 gm-1) and constructed meso-macroporous features of RG facilitated the interaction between the dye molecules and graphitic skeleton. The R-P isotherm fitted the best of equilibrium data, having the least variance in residuals for both dyes (AB = 0.00031 and RR = 0.00047). The pseudo-second order model best fitted the kinetics of sorption on RG, with chemisorption being the predominant process delimiting step. The overall results promise the dye removal capability of RG to be an efficient adsorbent for azo-based dyes from textile effluents.
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Affiliation(s)
- Hridam Deb
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology of the Ministry of Education, College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Md Khalid Hasan
- School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou, 310018, China
| | - Md Zahidul Islam
- School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, Zhejiang, China
| | - Shujuan Yang
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology of the Ministry of Education, College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Yong Zhang
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology of the Ministry of Education, College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China.
| | - Juming Yao
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology of the Ministry of Education, College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China
- School of Materials Science and Chemical Engineering, Ningbo University, 818 Fenghua Road, Ningbo, 315211, China
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2
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Lima JP, Besegatto SV, Villanueva-Mejia F, García-Hernández E, Bonilla-Petriciolet A, Lopes TJ. Binary adsorption isotherms of methylene blue and crystal violet on mandarin peels: prediction via detailed multivariate calibration and density functional theory (DFT) calculations. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:92436-92450. [PMID: 37490251 DOI: 10.1007/s11356-023-28873-3] [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: 04/13/2023] [Accepted: 07/15/2023] [Indexed: 07/26/2023]
Abstract
The multicomponent adsorption of synthetic dyes has great relevance in the treatment of effluents due to the complexity of the adsorbate-adsorbent interactions. Therefore, this study provides useful information about the adsorption capacity of methylene blue (MB) and crystal violet (CV) in a bioadsorbent (mandarin peels) in a single-component and competitive system using detailed multivariate calibration analysis. The PLS1 multivariate calibration model was used to quantify the adsorbates. In mono and two-component systems, the adsorption capacity of CV (1.26-1.36 mg g-1) was superior when compared to MB (0.925-0.913 mg g-1), characterizing synergistic adsorption for CV and antagonistic adsorption for MB. The Sips model was effective for describing single-component systems, suggesting that adsorption did not occur in the monolayer. For competitive adsorption, modified, unmodified, and extended models were used to understand the interactions between the dyes and the bioadsorbent. The modified Redlich-Peterson (MRP) model was effective in describing the behavior of the binary system, indicating that the interaction forces with the adsorbate were significant. Thus, the bioadsorbent showed promising results for competitive adsorption, thus being of relevance to the industrial sector. Density functional calculations were also performed to characterize the atomic interactions for the removal of both dyes on mandarin peels.
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Affiliation(s)
- Jarrie P Lima
- Chemical Engineering, Polytechnic School, Pontifical Catholic University of Rio Grande do Sul, PUCRS, Partenon, CEP, Porto Alegre, RS, 90619-900, Brazil.
| | - Stefane V Besegatto
- Postgraduate Program in Chemical Engineering, PPGEQ, Federal University of Rio Grande, FURG, Carreiros, CEP 96203-900, Rio Grande, RS, Brazil
| | | | | | | | - Toni J Lopes
- Postgraduate Program in Chemical Engineering, PPGEQ, Federal University of Rio Grande, FURG, Carreiros, CEP 96203-900, Rio Grande, RS, Brazil
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Teng HJ, Xia T, Li C, Guo JZ, Chen L, Wu C, Li B. Facile solvent-free radical polymerization to prepare itaconate-functionalized hydrochar for efficient sorption of methylene blue and Pb(II). BIORESOURCE TECHNOLOGY 2023; 377:128943. [PMID: 36958679 DOI: 10.1016/j.biortech.2023.128943] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 03/15/2023] [Accepted: 03/20/2023] [Indexed: 06/18/2023]
Abstract
An itaconate-functionalized hydrochar (IFHC) was prepared from one-step solvent-free radical copolymerization of bamboo hydrochar, itaconic acid, ammonium persulphate and sodium hydroxide in solvent-free environment, and was employed to absorb methylene blue (MB) and Pb(II) from wastewater. Characterizations show IFHC has rich carboxylate and tends to adsorb cationic contaminants. The largest adsorbed quantities of MB and Pb(II) by IFHC are up to 1036 and 291.8 mg·g-1 at 298 K respectively as per the Langmuir isotherm. Sorption of MB and Pb(II) onto IFHC can be expressed well by Langmuir isotherm and pseudo-2nd-order kinetics equations. The high sorption performance depends on the rich carboxylate, which can adsorb MB/Pb(II) through an electrostatic interaction/inner-surface complexation mechanism. The sorptive capacity of regenerated IFHC decreased below 10% after 5 desorption-resorption cycles. Thus, the solvent-free free radical copolymerization is an environmentally-friendly strategy to synthesize novel efficient sorbents that can clean cationic contaminants from wastewater.
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Affiliation(s)
- Hua-Jing Teng
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, Zhejiang 311300, PR China
| | - Tao Xia
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, Zhejiang 311300, PR China
| | - Cheng Li
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, Zhejiang 311300, PR China
| | - Jian-Zhong Guo
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, Zhejiang 311300, PR China
| | - Lin Chen
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, Zhejiang 311300, PR China
| | - Chunzheng Wu
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, Zhejiang 311300, PR China
| | - Bing Li
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, Zhejiang 311300, PR China.
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4
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Murphy OP, Vashishtha M, Palanisamy P, Kumar KV. A Review on the Adsorption Isotherms and Design Calculations for the Optimization of Adsorbent Mass and Contact Time. ACS OMEGA 2023; 8:17407-17430. [PMID: 37251194 PMCID: PMC10210042 DOI: 10.1021/acsomega.2c08155] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 04/11/2023] [Indexed: 05/31/2023]
Abstract
Adsorption is a widely used chemical engineering unit operation for the separation and purification of fluid streams. Typical uses of adsorption include the removal of targeted pollutants like antibiotics, dyes, heavy metals, and other small to large molecules from aqueous solutions or wastewater. To date several adsorbents that vary in terms of their physicochemical properties and costs have been tested for their efficacy to remove these pollutants from wastewater. Irrespective of the type of adsorbent, nature of the pollutant, or experimental conditions, the overall cost of adsorption depends directly on the adsorption contact time and the cost of the adsorbent materials. Thus, it is essential to minimize the amount of adsorbent and the contact time required. We carefully reviewed the attempts made by several researchers to minimize these two parameters using theoretical adsorption kinetics and isotherms. We also clearly explained the theoretical methods and the calculation procedures involved during the optimization of the adsorbent mass and the contact time. To complement the theoretical calculation procedures, we also made a detailed review on the theoretical adsorption isotherms that are commonly used to model experimental equilibrium data that can be used to optimize the adsorbent mass.
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Affiliation(s)
- Orla P. Murphy
- Department
of Chemical Sciences, Synthesis and Solid State Pharmaceutical Research
Centre and Bernal Research Institute, University
of Limerick, Limerick, Ireland V94 T9PX
| | - Mayank Vashishtha
- Department
of Chemical Sciences, Synthesis and Solid State Pharmaceutical Research
Centre and Bernal Research Institute, University
of Limerick, Limerick, Ireland V94 T9PX
| | - Parimaladevi Palanisamy
- Department
of Chemical Sciences, Synthesis and Solid State Pharmaceutical Research
Centre and Bernal Research Institute, University
of Limerick, Limerick, Ireland V94 T9PX
| | - K. Vasanth Kumar
- Department
of Chemical Sciences, Synthesis and Solid State Pharmaceutical Research
Centre and Bernal Research Institute, University
of Limerick, Limerick, Ireland V94 T9PX
- Department
of Chemical and Process Engineering, Faculty of Engineering and Physical
Sciences, School of Chemistry and Chemical Engineering, University of Surrey, Guildford, United Kingdom GU2 7XH
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El-Nemr MA, Hassaan MA, Ashour I. Fabrication of N-doping activated carbons from fish waste and sawdust for Acid Yellow 36 dye removal from an aquatic environment. Sci Rep 2023; 13:5892. [PMID: 37041270 PMCID: PMC10090169 DOI: 10.1038/s41598-023-33075-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Accepted: 04/06/2023] [Indexed: 04/13/2023] Open
Abstract
Acid Yellow 36 (AY36) dye is a synthetic azo dye that is excessively used in various industries, causing hazardous environmental effects. The main target of this study is the preparation of self-N-doped porous activated carbon (NDAC) and the investigation in eliminating the AY36 dye from the water solution. The NDAC was prepared by mixing fish waste (60% protein content) which was considered a self-nitrogen dopant. A combination of Fish waste, sawdust, zinc chloride and urea with a mass ratio (5:5:5:1) was submitted to hydrothermal process at 180 °C for 5 h followed by pyrolysis for 1 h under N2 stream at 600, 700, and 800 °C. Fabricated NDAC was qualified as an adsorbent for recovering AY36 dye from water using batch trials. The fabricated NDAC samples were characterized by FTIR, TGA, DTA, BET, BJH, MP, t-plot, SEM, EDX, and XRD methods. The results showed the successful formation of NDAC with nitrogen mass percentage content (4.21, 8.13 and 9.85%). The NDAC prepared at 800 °C had the largest nitrogen content (9.85%) and was labeled as NDAC800. This later had 727.34 m2/g, 167.11 cm3/g, and 1.97 nm for specific surface area, the monolayer volume and the mean pores diameter respectively. By being the more efficient adsorbent, NDAC800 was chosen to test AY36 dye removal. Therefore, it is selected to investigate the removal of AY36 dye from aqueous solution by varying important parameters such as solution pH, initial dye concentration, adsorbent dosage and contact time. The removal of AY36 dye by NDAC800 was pH-dependent, with the optimum pH value 1.5 giving 85.86% removal efficiency and 232.56 mg/g maximum adsorption capacity (Qm). The kinetic data exhibited the best fit model with the pseudo-second-order (PSOM), while the equilibrium data fit well with the Langmuir (LIM) and Temkin (TIM). The mechanism of AY36 dye adsorption may be ascribed to the electrostatic contact between the dye and the available charged sites on NDAC800 surface. The prepared NDAC800 may be considered as an efficient, available, and eco-friendly adsorbent for AY36 dye adsorption from simulated water.
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Affiliation(s)
- Mohamed A El-Nemr
- Department of Chemical Engineering, Faculty of Engineering, Minia University, Minia, 61519, Egypt.
| | - Mohamed A Hassaan
- Environment Division, National Institute of Oceanography and Fisheries (NIOF), Kayet Bey, El-Anfoushy, Alexandria, Egypt
| | - Ibrahim Ashour
- Department of Chemical Engineering, Faculty of Engineering, Minia University, Minia, 61519, Egypt
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6
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Simultaneous removal of Basic blue and Toluidine blue O dyes by Magnetic Fe3O4@polydopamine nanoparticle as an efficient adsorbent using derivative spectrophotometric determination and central composite design optimization. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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7
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Bayraç C, Yılmaz B, Bayrakcı M. Adsorption behavior of carboxy- and amine-terminated magnetic beads for patulin: Batch experiments in aqueous solution and apple juice. Food Res Int 2022; 162:112077. [DOI: 10.1016/j.foodres.2022.112077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 10/13/2022] [Accepted: 10/22/2022] [Indexed: 11/17/2022]
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8
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Saner A, Carvalho PN, Catalano J, Anastasakis K. Renewable adsorbents from the solid residue of sewage sludge hydrothermal liquefaction for wastewater treatment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 838:156418. [PMID: 35660599 DOI: 10.1016/j.scitotenv.2022.156418] [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: 02/18/2022] [Revised: 05/12/2022] [Accepted: 05/30/2022] [Indexed: 06/15/2023]
Abstract
Solid residue from hydrothermal liquefaction (HTL) of nutrient rich feedstock presents a promising source to recover valuable nutrients, such as phosphorus, in the solid form. The present work shows for the first time the potential of utilizing the waste residue remaining after nutrients extraction from HTL of sewage sludge, as renewable adsorbents. A parametric study was undertaken to investigate the influence of chemical activation conditions (temperature, residence time, activation agent loading, washing after activation) on raw and partially demineralized HTL solids. Kinetic and equilibrium adsorption investigation was undertaken for the removal of methylene blue (MB) from aqueous solution. For comparison purposes, a commercial activated charcoal (AC) was used. Demineralization was found to have a significant influence in the adsorption capacity of the resultant adsorbents. Three adsorbents were found to follow the Langmuir adsorption model, while the acid washed demineralized adsorbent had higher adsorption capacity than AC and was found to follow the Freundlich adsorption model. The superior performance of the acid washed demineralized adsorbent was verified from the kinetic study where all adsorbents were found to best fit the pseudo-second order model. Adsorption capacities for MB at equilibrium were 367.1, 332.3, 297.4 and 87.6 mg/g, for acid washed demineralized adsorbent, AC, demineralized adsorbent, and raw adsorbent, respectively. Finally, the most promising adsorbents were assessed for their adsorption capacity to remove pharmaceuticals present in a real wastewater treatment effluent. Results indicated ultimate concentration for all targeted compounds below the detection limits for acid washed demineralized adsorbent, AC and demineralized adsorbent. Future implementation of HTL technology in wastewater treatment facilities, will not only provide an efficient way to valorize sewage sludge into bio-crude and nutrients, but can also enhance technology integration by providing the precursors for renewable adsorbents needed in tertiary treatment of wastewater.
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Affiliation(s)
- A Saner
- Department of Biological and Chemical Engineering, Aarhus University, Hangøvej 2, Aarhus 8200, Denmark; Department of Animal Science, Aarhus University, Blicher Allé 20, Tjele 8830, Denmark
| | - P N Carvalho
- Department of Environmental Sciences, Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark; WATEC-Centre for Water Technology, Aarhus University, Ny Munkegade 120, Aarhus 8000, Denmark
| | - J Catalano
- Department of Biological and Chemical Engineering, Aarhus University, Hangøvej 2, Aarhus 8200, Denmark; WATEC-Centre for Water Technology, Aarhus University, Ny Munkegade 120, Aarhus 8000, Denmark
| | - K Anastasakis
- Department of Biological and Chemical Engineering, Aarhus University, Hangøvej 2, Aarhus 8200, Denmark; WATEC-Centre for Water Technology, Aarhus University, Ny Munkegade 120, Aarhus 8000, Denmark.
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Liang C, Shi Q, Feng J, Yao J, Huang H, Xie X. Adsorption Behaviors of Cationic Methylene Blue and Anionic Reactive Blue 19 Dyes onto Nano-Carbon Adsorbent Carbonized from Small Precursors. NANOMATERIALS 2022; 12:nano12111814. [PMID: 35683669 PMCID: PMC9182342 DOI: 10.3390/nano12111814] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 05/17/2022] [Accepted: 05/19/2022] [Indexed: 01/27/2023]
Abstract
In this work, an innovative nano-carbon material (N-CM) adsorbent was reported for exploring its adsorption behaviors toward cationic methylene blue (MB) and anionic reactive blue 19 (RB19) pollutants. The proposed N-CM was synthesized by a one-step solvothermal treatment of citric acid and zinc gluconate small precursors. N-CM consists of nanosheets that have an advantageous specific surface area, large sp2/sp3 hybridized domains, and abundant nitrogen/oxygen-containing surface functional groups. The synergistic effects of these features are conducive to the MB and RB19 adsorption. Different from anionic RB19 adsorption (79.54 mg/g) by the cooperative π-π stacking and hydrogen bonding, cationic MB adsorbed onto N-CM mainly by the electrostatic attraction at the natural pH solution (> pHpzc), with an adsorption capacity up to 118.98 mg/g. Interestingly, both MB and RB19 adsorption conformed to the pseudo-second order kinetic (R2 ≥ 0.995) and Langmuir isothermal (R2 ≥ 0.990) models, accompanied by similar maximum monolayer adsorption capacities of 120.77 and 116.01 mg/g, respectively. Their adsorption processes exhibited spontaneously endothermic characteristics. Moreover, N-CM showed superior selective capability toward MB in different mixed dye systems, with high removal efficiencies of 73−89%. These results demonstrate that the high-performance carbon adsorbent prepared from small precursors via low-temperature carbonization shows great potentials in wastewater treatment.
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Mobasser S, Wager Y, Dittrich TM. Indoor Air Purification of Volatile Organic Compounds (VOCs) Using Activated Carbon, Zeolite, and Organosilica Sorbents. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c04732] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shariat Mobasser
- Department of Civil and Environmental Engineering, Wayne State University, Detroit, Michigan 48202 United States
| | - Yongli Wager
- Department of Civil and Environmental Engineering, Wayne State University, Detroit, Michigan 48202 United States
| | - Timothy M. Dittrich
- Department of Civil and Environmental Engineering, Wayne State University, Detroit, Michigan 48202 United States
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11
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Linear and Non-Linear Regression Analysis for the Adsorption Kinetics of SO2 in a Fixed Carbon Bed Reactor—A Case Study. ENERGIES 2022. [DOI: 10.3390/en15020633] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Here, we determined the kinetic parameters of SO2 adsorption on unburned carbons from lignite fly ash and activated carbons based on hard coal dust. The model studies were performed using the linear and non-linear regression method for the following models: pseudo first and second order, intraparticle diffusion, and chemisorption on a heterogeneous surface. The quality of the fitting of a given model to empirical data was assessed based on: R2, R, Δq, SSE, ARE, χ2, HYBRID, MPSD, EABS, and SNE. It was clearly shown that the linear regression more accurately reflects the behaviour of the adsorption system, which is consistent with the first-order kinetic reaction—for activated carbons (SO2 + Ar) or chemisorption on a heterogeneous surface—for unburned carbons (SO2 + Ar and SO2 + Ar + H2O(g) + O2) and activated carbons (SO2 + Ar + H2O(g) + O2). Importantly, usually, each of the approaches (linear/non-linear) indicated a different mechanism of the studied phenomenon. A certain universality of the χ2 and HYBRID functions has been proved, the minimization of which repeatedly led to the lowest SNE values for the indicated models. Fitting data by any of the non-linear equations based on the R or R2 functions only cannot be treated as evidence/prerequisite of the existence of a given adsorption mechanism.
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12
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Abbas A. Chemical Sensor Array Modeling. Quartz Crystal Microbalance Sensors. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2022. [DOI: 10.1134/s0036024421150024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Adsorptive Recovery of Cu2+ from Aqueous Solution by Polyethylene Terephthalate Nanofibres Modified with 2-(Aminomethyl)Pyridine. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app112411912] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The accumulation of plastic waste products in the environment has adversely affected wildlife and human beings. Common plastics that accumulate in the environment are plastics that are made of polyethylene terephthalate (PET) polymer. PET plastic waste products can be recycled for beneficial use, which would reduce their negative impacts. In this study, modified PET or waste PET (WPET) from plastic bottles was blended with powder commercial 2-(aminomethyl)pyridine (SiAMPy) resin and electrospun into composite nanofibres and applied for Cu2+ adsorption. PET-SiAMPy or WPET-SiAMPy composite nanofibres fibre diameters from the HRSEM images were 90–140 nm and 110–155 nm, respectively. In batch adsorption experiments, PET-SiAMPy or WPET-SiAMPy composite nanofibres achieved Cu2+ adsorption equilibrium within 60 secs of contact time with 0.98 mmol/g (89.87%) or 1.24 mmol/g (96.04%) Cu2+ adsorption capacity. The Cu2+ complex formation rate (k) with WPET-SiAMPy was 0.0888 with the mole ratio of Cu2+ and WPET-SiAMPy nanofibres 1:2. The complex molecular formula formed was Cu(WPET-SiAMPy)2 with a square planar geometry structure. The WPET-SiAMPy nanofibres’ adsorption was best fitted to the Freundlich isotherm. WPET-SiAMPy composite nanofibres were considered highly efficient for Cu2+ adsorption from aqueous solution and could be regenerated at least five times using 5 M H2SO4.
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Isiuku BO, Okonkwo PC, Emeagwara CD. Batch adsorption isotherm models applied in single and multicomponent adsorption systems – a review. J DISPER SCI TECHNOL 2021. [DOI: 10.1080/01932691.2021.1964988] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | - Paul C. Okonkwo
- Mechanical and Mechatronics Engineering, Dhofar University, Salalah, Oman
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15
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Ashiq A, Walpita J, Vithanage M. Functionalizing non-smectic clay via methoxy-modification for enhanced removal and recovery of oxytetracycline from aqueous media. CHEMOSPHERE 2021; 276:130079. [PMID: 33721631 DOI: 10.1016/j.chemosphere.2021.130079] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 02/09/2021] [Accepted: 02/19/2021] [Indexed: 06/12/2023]
Abstract
Kaolinite and methoxy-modified kaolinite were used as novel adsorbents for oxytetracycline (OTC) removal and recovery from aqueous media. Batch adsorption experiments were performed to study the effect of pH, ionic strengths, initial concentration, and contact time on OTC adsorption. The adsorbents were characterized using powder X-ray diffraction (PXRD), Fourier-transform infrared (FTIR) spectroscopy and X-ray photoelectron spectroscopy (XPS) before and after adsorption. Adsorption of OTC reached its maximum when solution pH increased up to 6 for 0.001 M ionic strength, above which adsorption decreased further when solution pH increased. Freundlich and Langmuir's models best fit the equilibrium data with a strong dependency on OTC adsorption capacity giving its maximum at 36 mg g-1. Binding is postulated for OTC adsorption on pristine kaolinite as a special case of Hill model with independent binding interaction of OTC adsorption onto the clay that affects the adjacent sites on the pristine kaolinite, in contrast with the adsorption of OTC on methoxy-modified kaolinite. Nitrogen peaks of the XPS spectra indicated changes in the oxidation states of C-N bonds in the N1s peaks by forming tertiary amide C-N and methoxy O-CH3 bonds which corroborated with the results from FTIR spectra. Removal efficiencies and spectroscopic results indicate that performance on methoxy-modified kaolinite is a promising modification on the clay for recovering antibiotics from wastewater.
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Affiliation(s)
- Ahmed Ashiq
- Ecosphere Resilience Research Centre, Faculty of Applied Sciences, University of Sri Jayewardenepura, Sri Lanka
| | - Janitha Walpita
- Ecosphere Resilience Research Centre, Faculty of Applied Sciences, University of Sri Jayewardenepura, Sri Lanka; Instrument Centre, Faculty of Applied Sciences, University of Sri Jayewardenepura, Sri Lanka
| | - Meththika Vithanage
- Ecosphere Resilience Research Centre, Faculty of Applied Sciences, University of Sri Jayewardenepura, Sri Lanka.
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16
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Tshemese SJ, Mhike W, Tichapondwa SM. Adsorption of phenol and chromium (VI) from aqueous solution using exfoliated graphite: Equilibrium, kinetics and thermodynamic studies. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103160] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
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17
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Abilio TE, Soares BC, José JC, Milani PA, Labuto G, Carrilho ENVM. Hexavalent chromium removal from water: adsorption properties of in natura and magnetic nanomodified sugarcane bagasse. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:24816-24829. [PMID: 33405161 DOI: 10.1007/s11356-020-11726-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 11/17/2020] [Indexed: 06/12/2023]
Abstract
Biosorption has become a viable and ecological process in which biological materials are employed as adsorbents for the removal of potentially toxic metals, such as hexavalent chromium, from aqueous matrices. This work proposed the use of in natura (SB) and nanomodified sugarcane bagasse (SB-NP) with ferromagnetic nanoparticles (Fe3O4) to adsorb Cr(VI) from water. These materials were analyzed by X-ray Spectroscopy (XRD), Scanning Electron Microscopy (SEM), and Fourier Transform Infrared Spectroscopy (FTIR) to investigate their morphology and interaction with Cr(VI). It was observed the efficient impregnation of magnetite on the SB surface and the presence of functional groups such as O-H, C-H, C=O, C-O-C, C-O, and Fe-O (characteristic of magnetite). The best conditions for Cr(VI) removal in aqueous medium were determined by assessing the pH at the point of zero charge (pHPZC = 6.1 and 5.8 for SB and SB-NP, respectively), adsorption pH and kinetics, and adsorption capacity. Batch procedures were performed using increasing concentrations of Cr(VI), 10-100 mg/L at pH 1.0, and 30 min of contact time. The adsorbent dose was 10 mg/L, and the experimental adsorption capacities (SCexp) for SB, NP, and SB-NP were 1.49 ± 0.06 mg/g, 2.48 ± 0.57 mg/g, and 1.60 ± 0.08 mg/g, respectively. All Cr contents were determined by flame atomic absorption spectrometry (FAAS). The pseudo-2nd-order kinetic equation provided the best adjustments with r2 0.9966 and 0.9931 for SB and SB-NP, respectively. Six isotherm models (Langmuir, Freundlich, Sips, Temkin, Dubinin-Radushkevich, and Hill) were applied to the experimental data, and Freundlich, Dubinin-Radushkevich (D-R), and Temkin were the models that best described the experimental sorption process. The binding energy values (E) provided by the D-R model were 0.11 ± 0.25, 0.09 ± 0.20, and 0.08 ± 0.25 kJ/mol, for NP, SB-NP, and SB, respectively, and denote a physical interaction for the studied adsorbate-adsorbent system. The nanomodification of the biomass slightly improved the efficiency for the sorption of Cr(VI) and facilitated the removal of Cr(VI)-containing biosorbents from water medium.
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Affiliation(s)
- Thais Eduarda Abilio
- Laboratório de Materiais Poliméricos e Biossorventes, Universidade Federal de São Carlos, Araras, SP, 13600-970, Brazil
| | - Beatriz Caliman Soares
- Laboratório de Materiais Poliméricos e Biossorventes, Universidade Federal de São Carlos, Araras, SP, 13600-970, Brazil
| | - Julia Cristina José
- Laboratório de Materiais Poliméricos e Biossorventes, Universidade Federal de São Carlos, Araras, SP, 13600-970, Brazil
| | - Priscila Aparecida Milani
- Laboratório de Materiais Poliméricos e Biossorventes, Universidade Federal de São Carlos, Araras, SP, 13600-970, Brazil
| | - Geórgia Labuto
- Departamento de Química, Universidade Federal de São Paulo, Diadema, SP, 09913-030, Brazil
| | - Elma Neide Vasconcelos Martins Carrilho
- Laboratório de Materiais Poliméricos e Biossorventes, Universidade Federal de São Carlos, Araras, SP, 13600-970, Brazil.
- Departamento de Ciências da Natureza, Matemática e Educação, Universidade Federal de São Carlos, Araras, SP, 13600-970, Brazil.
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Searching for optimum adsorption curve for metal sorption on soils: comparison of various isotherm models fitted by different error functions. SN APPLIED SCIENCES 2021. [DOI: 10.1007/s42452-021-04383-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
AbstractStudies comparing numerous sorption curve models and different error functions are lacking completely for soil-metal adsorption systems. We aimed to fill this gap by studying several isotherm models and error functions on soil-metal systems with different sorption curve types. The combination of fifteen sorption curve models and seven error functions were studied for Cd, Cu, Pb, and Zn in competitive systems in four soils with different geochemical properties. Statistical calculations were carried out to compare the results of the minimizing procedures and the fit of the sorption curve models. Although different sorption models and error functions may provide some variation in fitting the models to the experimental data, these differences are mostly not significant statistically. Several sorption models showed very good performances (Brouers-Sotolongo, Sips, Hill, Langmuir-Freundlich) for varying sorption curve types in the studied soil-metal systems, and further models can be suggested for certain sorption curve types. The ERRSQ error function exhibited the lowest error distribution between the experimental data and predicted sorption curves for almost each studied cases. Consequently, their combined use could be suggested for the study of metal sorption in the studied soils. Besides testing more than one sorption isotherm model and error function combination, evaluating the shape of the sorption curve and excluding non-adsorption processes could be advised for reliable data evaluation in soil-metal sorption system.
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Al-Ghouti MA, Da'ana DA. Guidelines for the use and interpretation of adsorption isotherm models: A review. JOURNAL OF HAZARDOUS MATERIALS 2020; 393:122383. [PMID: 32369889 DOI: 10.1016/j.jhazmat.2020.122383] [Citation(s) in RCA: 737] [Impact Index Per Article: 184.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 01/21/2020] [Accepted: 02/21/2020] [Indexed: 05/20/2023]
Abstract
Adsorption process is considered as one of the most used separation and purification processes, in which adsorption occurs by the formation of the physical or chemical bonds between a porous solid medium and a mixture of liquid or gas multi-component fluid. By taking into consideration the equilibrium data and the adsorption properties of both the adsorbent and the adsorbate, adsorption isotherm models can describe the interaction mechanisms between the adsorbent and the adsorbate at constant temperature. Therefore, understanding modelling of the equilibrium data is a very essential way of predicting the adsorption mechanisms of various adsorption systems. Furthermore, adsorption isotherms in batch experiments can be used for the determination of the solid-water distribution coefficient (Kid). This review paper discusses the guidelines of using mono/multi-parametric isotherm models with different applications. The aim of this paper is to establish criteria for choosing the optimum isotherm model through a critical review of different adsorption models and the use of various mathematically error functions such as linear regression analysis, nonlinear regression analysis, and error functions for adsorption data optimization. In this paper, 15 mono-parametric adsorption isotherm models having one, two, three, four and five parameters were investigated. In addition, 10 multi-parameter isotherm models were reviewed as well as addressing their applications.
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Affiliation(s)
- Mohammad A Al-Ghouti
- Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, Doha. P.O. Box: 2713, Qatar.
| | - Dana A Da'ana
- Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, Doha. P.O. Box: 2713, Qatar
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Diaz de Tuesta JL, Silva AMT, Faria JL, Gomes HT. Adsorption of Sudan-IV contained in oily wastewater on lipophilic activated carbons: kinetic and isotherm modelling. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:20770-20785. [PMID: 32248414 DOI: 10.1007/s11356-020-08473-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 03/16/2020] [Indexed: 06/11/2023]
Abstract
Up to nine kinetic and fourteen isotherm adsorption models are employed to model the adsorption of Sudan IV, a lipophilic model pollutant present in a biphasic mixture of cyclohexane-water system to simulate oily wastewater. Six different modified activated carbons were used as adsorbents. The highest amount adsorbed of Sudan IV was found in the material prepared by successive treatments of the parent commercial activated carbon Norit ROX 0.8 with nitric acid and urea, followed by thermal treatment at 800 °C under continuous flow of nitrogen. Kinetic and isotherm adsorption models can be employed to simulate the process, since the effect of the presence of water in the adsorption of Sudan IV from the cyclohexane phase was found to be negligible, owing to the high lipophilic character of both adsorbent and adsorbate. All kinetic and isotherm coefficients, coupling with statistical parameters (r2, adjusted r2 and sum of squared errors), are determined by non-linear regression fitting and compared to literature data. The model of Avrami is found to be the most appropriate model to represent the adsorption of the pollutant in any of the six modified carbons tested, the highest value of the kinetic constant being 0.055 min-1. The isotherm adsorption is well-modelled by using the general isotherm equation of Tóth and the multilayer Jovanović expression for the adsorption of Sudan-IV on that material, resulting in a high monolayer uptake capacity (qm = 193.6 mg g-1).
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Affiliation(s)
- Jose L Diaz de Tuesta
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253, Braganca, Portugal.
| | - Adrián M T Silva
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465, Porto, Portugal
| | - Joaquim L Faria
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465, Porto, Portugal
| | - Helder T Gomes
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253, Braganca, Portugal
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Singh S, Kumar V, Datta S, Dhanjal DS, Sharma K, Samuel J, Singh J. Current advancement and future prospect of biosorbents for bioremediation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 709:135895. [PMID: 31884296 DOI: 10.1016/j.scitotenv.2019.135895] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 11/02/2019] [Accepted: 12/01/2019] [Indexed: 05/12/2023]
Abstract
The increasing use of heavy metals, synthetic dyes and pesticides is a major environmental concern. Wastewaters containing heavy metals and dyes, extensively released from small and large scale industries enter excessively into food chains resulting in mutagenesis, carcinogenicity and serious health impairments in living systems. The arrays of technologies are implemented to date to remediate both inorganic and organic contaminants from wastewaters. Among which, adsorption is the most attractive method as it employs eco-friendly, sustainable and cost-effective biomaterials. Use of bioadsorbents is advantageous over the conventional adsorbents. Clay, chitin, peat, microbial biomass and agricultural wastes are commonly used bioadsorbants. These bioadsorbents are extensively used for elimination of dyes, heavy metals, adsorption of toxic industrial effluents, removal of fertilizers/pesticides, atmospheric pollutants and nuclear waste from the environment. The current review presents state of the art knowledge on various types of biosorbents, their uses, and mechanism of action. Various strategies to enhance the efficiency of bioadsorbents and physicochemical conditions to remediate dyes and heavy metals from waste streams are also incorporated in this review. Use of nano-bioadsorbents in industries to minimize the hazardous effect of solid and liquid waste has also been discussed.
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Affiliation(s)
- Simranjeet Singh
- Department of Biotechnology, Lovely Professional University, Phagwara 144411, Punjab, India; Punjab Biotechnology Incubators, Mohali 160059, Punjab, India; Regional Advanced Water Testing Laboratory, Mohali 160059, Punjab, India
| | - Vijay Kumar
- Regional Ayurveda Research Institute for Drug Development, Gwalior 474009, MP, India
| | - Shivika Datta
- Department of Zoology, Doaba College Jalandhar, Punjab, India
| | - Daljeet Singh Dhanjal
- Department of Biotechnology, Lovely Professional University, Phagwara 144411, Punjab, India
| | - Kankan Sharma
- Department of Biotechnology, Lovely Professional University, Phagwara 144411, Punjab, India
| | - Jastin Samuel
- Department of Biotechnology, Lovely Professional University, Phagwara 144411, Punjab, India; Waste Valorization Research Lab, Lovely Professional University, Phagwara - 144411, Punjab, India
| | - Joginder Singh
- Department of Biotechnology, Lovely Professional University, Phagwara 144411, Punjab, India.
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Robledo-Padilla F, Aquines O, Silva-Núñez A, Alemán-Nava GS, Castillo-Zacarías C, Ramirez-Mendoza RA, Zavala-Yoe R, Iqbal HMN, Parra-Saldívar R. Evaluation and Predictive Modeling of Removal Condition for Bioadsorption of Indigo Blue Dye by Spirulina platensis. Microorganisms 2020; 8:microorganisms8010082. [PMID: 31936179 PMCID: PMC7022827 DOI: 10.3390/microorganisms8010082] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 12/19/2019] [Accepted: 01/04/2020] [Indexed: 02/05/2023] Open
Abstract
Among the different chemical and physical treatments used to remove the color of the textile effluents, bioremediation offers many benefits to the environment. In this study, we determined the potential of Spirulina platensis (S. platensis) for decolorizing indigo blue dye under different incubation conditions. The microalgae were incubated at different pH (from 4 to 10) to calibrate for the optimal discoloration condition; a pH of 4 was found to be optimal. The biomass concentration in all experiments was 1 g/L, which was able to decolorize the indigo blue dye by day 3. These results showed that S. platensis is capable of removing indigo blue dye at low biomass. However, this was dependent on the treatment conditions, where temperature played the most crucial role. Two theoretical adsorption models, namely (1) a first-order model equation and (2) a second-order rate equation, were compared with observed adsorption vs. time curves for different initial concentrations (from 25 to 100 mg/L). The comparison between models showed similar accuracy and agreement with the experimental values. The observed adsorption isotherms for three temperatures (30, 40, and 50 °C) were plotted, showing fairly linear behavior in the measured range. The adsorption equilibrium isotherms were estimated, providing an initial description of the dye removal capacity of S. platensis.
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Affiliation(s)
- Felipe Robledo-Padilla
- Department of Physics and Mathematics, Universidad de Monterrey, Av. Morones Prieto 4500, San Pedro Garza García 66238, N.L., Mexico; (F.R.-P.); (O.A.)
| | - Osvaldo Aquines
- Department of Physics and Mathematics, Universidad de Monterrey, Av. Morones Prieto 4500, San Pedro Garza García 66238, N.L., Mexico; (F.R.-P.); (O.A.)
| | - Arisbe Silva-Núñez
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey CP 64849, N.L., Mexico; (A.S.-N.); (G.S.A.-N.); (C.C.-Z.); (R.A.R.-M.)
| | - Gibrán S. Alemán-Nava
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey CP 64849, N.L., Mexico; (A.S.-N.); (G.S.A.-N.); (C.C.-Z.); (R.A.R.-M.)
| | - Carlos Castillo-Zacarías
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey CP 64849, N.L., Mexico; (A.S.-N.); (G.S.A.-N.); (C.C.-Z.); (R.A.R.-M.)
| | - Ricardo A. Ramirez-Mendoza
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey CP 64849, N.L., Mexico; (A.S.-N.); (G.S.A.-N.); (C.C.-Z.); (R.A.R.-M.)
| | - Ricardo Zavala-Yoe
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Mexico City, Calzada del Puente 222, Col. Ejidos de Huipulco, Mexico City 14380, Mexico;
| | - Hafiz M. N. Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey CP 64849, N.L., Mexico; (A.S.-N.); (G.S.A.-N.); (C.C.-Z.); (R.A.R.-M.)
- Correspondence: (H.M.N.I.); (R.P.-S.); Tel.: +52-8183582000 (R.P.-S.)
| | - Roberto Parra-Saldívar
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey CP 64849, N.L., Mexico; (A.S.-N.); (G.S.A.-N.); (C.C.-Z.); (R.A.R.-M.)
- Correspondence: (H.M.N.I.); (R.P.-S.); Tel.: +52-8183582000 (R.P.-S.)
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23
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Ang TN, Young BR, Taylor M, Burrell R, Aroua MK, Baroutian S. Breakthrough analysis of continuous fixed-bed adsorption of sevoflurane using activated carbons. CHEMOSPHERE 2020; 239:124839. [PMID: 31726519 DOI: 10.1016/j.chemosphere.2019.124839] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 09/07/2019] [Accepted: 09/10/2019] [Indexed: 06/10/2023]
Abstract
The inhalational anaesthetic agent - sevoflurane is widely employed for the induction and maintenance of surgical anaesthesia. Sevoflurane possesses a high global warming potential that imposes negative impact to the environment. The only way to resolve the issue is to remove sevoflurane from the medical waste gas before it reaches the atmosphere. A continuous adsorption study with a fixed-bed column was conducted using two commercial granular activated carbons (E-GAC and H-GAC), to selectively remove sevoflurane. The effect of bed depth (Z, 5-15 cm), gas flow rate (Q, 0.5-6.0 L/min) and inlet sevoflurane concentration (C0, ∼55-700 mg/L) was investigated. E-GAC demonstrated ∼60% higher adsorption capacity than H-GAC under the same operating conditions. Varying the levels of Z, Q and C0 showed significant differences in the adsorption capacities of E-GAC, whereas only changing the C0 level had significant differences for H-GAC. Three breakthrough models (Adams-Bohart, Thomas, and Yoon-Nelson) and Bed-depth/service time (BDST) analysis were applied to predict the breakthrough characteristics of the adsorption tests and determine the characteristic parameters of the column. The Yoon-Nelson and Thomas model-predicted breakthrough curves were in good agreement with the experimental values. In the case of the Adams-Bohart model, a low correlation was observed. The predicted breakthrough time (tb) based on kinetic constant (kBDST) in BDST analysis showed satisfactory agreement with the measured values. The results suggest the possibility of designing, scaling up and optimising an adsorption system for removing sevoflurane with the aid of the models and BDST analysis.
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Affiliation(s)
- Teck Nam Ang
- Department of Chemical and Materials Engineering, Faculty of Engineering, The University of Auckland, Auckland, New Zealand
| | - Brent R Young
- Department of Chemical and Materials Engineering, Faculty of Engineering, The University of Auckland, Auckland, New Zealand
| | - Matthew Taylor
- Department of Anaesthesia, Middlemore Hospital, Counties Manukau Health, Otahuhu, Auckland, New Zealand
| | - Rob Burrell
- Department of Anaesthesia, Middlemore Hospital, Counties Manukau Health, Otahuhu, Auckland, New Zealand
| | - Mohamed Kheireddine Aroua
- Centre for Carbon Dioxide Capture and Utilization, School of Science and Technology, Sunway University, Malaysia; Department of Engineering, Lancaster University, Lancaster, LA1 4YW, United Kingdom
| | - Saeid Baroutian
- Department of Chemical and Materials Engineering, Faculty of Engineering, The University of Auckland, Auckland, New Zealand.
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Ashiq A, Sarkar B, Adassooriya N, Walpita J, Rajapaksha AU, Ok YS, Vithanage M. Sorption process of municipal solid waste biochar-montmorillonite composite for ciprofloxacin removal in aqueous media. CHEMOSPHERE 2019; 236:124384. [PMID: 31545191 DOI: 10.1016/j.chemosphere.2019.124384] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Revised: 07/13/2019] [Accepted: 07/15/2019] [Indexed: 06/10/2023]
Abstract
This study evaluates a novel adsorbent for ciprofloxacin (CPX) removal from water using a composite derived from municipal solid waste biochar (MSW-BC) and montmorillonite (MMT). The composite adsorbent and pristine materials were characterized using powder X-Ray Diffraction (PXRD), Fourier-Transform Infrared (FTIR) spectroscopy, and Scanning Electron Microscope (SEM) before and after the adsorption. Batch experiments were conducted to study the mechanisms involved in the adsorption process. Ciprofloxacin sorption mechanisms were interpreted in terms of its pH-dependency and the distribution coefficients. The SEM images confirmed the successful binding of MMT onto the MSW-BC through flaky structure along with a porous morphology. Encapsulation of MMT onto MSW-BC was exhibited through changes in the basal spacing of MMT via PXRD analysis. Results from FTIR spectra indicated the presence of functional groups for both pristine materials and the composite that were involved in the adsorption reaction. The Hill isotherm model and pseudo-second-order and Elovich kinetic models fitted the batch sorption data, which explained the surface heterogeneity of the composite and cooperative adsorption mechanisms. Changes made to the MSW-BC through the introduction of MMT, enhanced the active sites on the composite adsorbent, thereby improving its interaction with ionizable CPX molecules giving high sorption efficiency.
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Affiliation(s)
- Ahmed Ashiq
- Ecosphere Resilience Research Centre, Faculty of Applied Science, University of Sri Jayewardenepura, Sri Lanka
| | - Binoy Sarkar
- Department of Animal and Plant Sciences, The University of Sheffield, Sheffield, S10 2TN, United Kingdom
| | - Nadeesh Adassooriya
- Department of Food Science and Technology, Wayamba University of Sri Lanka, Makandura, Gonawila 60170, Sri Lanka
| | - Janitha Walpita
- Ecosphere Resilience Research Centre, Faculty of Applied Science, University of Sri Jayewardenepura, Sri Lanka
| | - Anushka Upamali Rajapaksha
- Ecosphere Resilience Research Centre, Faculty of Applied Science, University of Sri Jayewardenepura, Sri Lanka
| | - Yong Sik Ok
- Korea Biochar Research Center, O-Jeong Eco-Resilience Institute (OJERI) & Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, South Korea.
| | - Meththika Vithanage
- Ecosphere Resilience Research Centre, Faculty of Applied Science, University of Sri Jayewardenepura, Sri Lanka; Molecular Microbiology and Human Diseases, National Institute of Fundamental Studies, Kandy 20000, Sri Lanka.
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Marques BS, Frantz TS, Sant'Anna Cadaval Junior TR, de Almeida Pinto LA, Dotto GL. Adsorption of a textile dye onto piaçava fibers: kinetic, equilibrium, thermodynamics, and application in simulated effluents. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:28584-28592. [PMID: 30377973 DOI: 10.1007/s11356-018-3587-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 10/23/2018] [Indexed: 05/15/2023]
Abstract
This research was conducted to evaluate the methylene blue dye adsorption by piaçava fibers. The effects of adsorbent amount, pH, kinetics, equilibrium, and thermodynamics were analyzed, as well as the adsorbent performance in the treatment of synthetic textile effluents. The adsorbent characterization was also performed. Experimental kinetic data were fitted with pseudo-first-order, pseudo-second-order, and Elovich models. The equilibrium tests were done at 298, 308, and 318 K, and the models of Freundlich, Langmuir, Redlich-Peterson, and Sips were used. The adsorption was favored using 0.025 g of adsorbent, pH 10, and 318 K. The Elovich model provided better fit to kinetic data. The equilibrium experimental points were well represented by the Sips model. The maximum experimental adsorption capacity of methylene blue dye was 427.3 mg g-1. It was verified a spontaneous, favorable, and endothermic adsorption. Piaçava fiber was a promising low-cost material to be used for color removal in effluents containing methylene blue.
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Affiliation(s)
- Bianca Silva Marques
- Chemical Engineering Department, Federal University of Santa Maria - UFSM, Roraima Avenue, 1000, Santa Maria, RS, 97105-900, Brazil
| | - Tuanny Santos Frantz
- School of Chemistry and Food, Federal University of Rio Grande - FURG, Av. Itália km 8 - Carreiros, Rio Grande, RS, 96203-900, Brazil
| | | | - Luiz Antonio de Almeida Pinto
- School of Chemistry and Food, Federal University of Rio Grande - FURG, Av. Itália km 8 - Carreiros, Rio Grande, RS, 96203-900, Brazil
| | - Guilherme Luiz Dotto
- Chemical Engineering Department, Federal University of Santa Maria - UFSM, Roraima Avenue, 1000, Santa Maria, RS, 97105-900, Brazil.
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Campaña-Pérez JF, Portero Barahona P, Martín-Ramos P, Carvajal Barriga EJ. Ecuadorian yeast species as microbial particles for Cr(VI) biosorption. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:28162-28172. [PMID: 31363969 DOI: 10.1007/s11356-019-06035-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 07/22/2019] [Indexed: 06/10/2023]
Abstract
Pollution caused by heavy metals is a prime concern due to its impact on human health, animals, and ecosystems. Cr(VI), generated in a range of different industries as a liquid effluent, is one of the most frequent contaminants. In the work presented herein, the adsorption efficiency of three species of native yeasts from Ecuador (Kazachstania yasuniensis, Kodamaea transpacifica, and Saturnispora quitensis) for Cr(VI) removal from simulated wastewater was assessed, taking Saccharomyces cerevisiae as a reference. After disruption of the flocs of yeast with a cationic surfactant, adsorption capacity, kinetics, and biosorption isotherms were studied. K. transpacifica isolate was found to feature the highest efficiency among the four yeasts tested, as a result of its advantageous combination of surface charge, individual cell size (4.04 μm), and surface area (1588.27 m2/L). The performance of S. quitensis was only slightly lower. The remarkable biosorption capacities of these two isolates (476.19 and 416.67 mg of Cr(VI)/g of yeast, respectively) evidence the potential of non-conventional yeast species as sorption microbial particles for polluted water remediation.
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Affiliation(s)
- Juan Fernando Campaña-Pérez
- Centro Neotropical para Investigación de la Biomasa (CNIB), Colección de Levaduras Quito Católica (CLQCA), Pontificia Universidad Católica del Ecuador, Av. 12 de Octubre 1076 y Roca, Apartado, 17-01-2184, Quito, Ecuador.
| | - Patricia Portero Barahona
- Centro Neotropical para Investigación de la Biomasa (CNIB), Colección de Levaduras Quito Católica (CLQCA), Pontificia Universidad Católica del Ecuador, Av. 12 de Octubre 1076 y Roca, Apartado, 17-01-2184, Quito, Ecuador
| | - Pablo Martín-Ramos
- Department of Agricultural and Environmental Sciences, EPS, Instituto Universitario de Investigación en Ciencias Ambientales (IUCA), University of Zaragoza, Carretera de Cuarte, s/n, 22071, Huesca, Spain
| | - Enrique Javier Carvajal Barriga
- Centro Neotropical para Investigación de la Biomasa (CNIB), Colección de Levaduras Quito Católica (CLQCA), Pontificia Universidad Católica del Ecuador, Av. 12 de Octubre 1076 y Roca, Apartado, 17-01-2184, Quito, Ecuador
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Zolgharnein J, Feshki S. Multivariate Optimization for Preconcentration and Separation of Brilliant Green using Magnetite Nanoparticles Functionalized by Cetyltrimethylamonium Bromide. JOURNAL OF ANALYTICAL CHEMISTRY 2019. [DOI: 10.1134/s1061934819080094] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Barros Ó, Costa L, Costa F, Lago A, Rocha V, Vipotnik Z, Silva B, Tavares T. Recovery of Rare Earth Elements from Wastewater Towards a Circular Economy. Molecules 2019; 24:molecules24061005. [PMID: 30871164 PMCID: PMC6471397 DOI: 10.3390/molecules24061005] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 03/04/2019] [Accepted: 03/06/2019] [Indexed: 11/16/2022] Open
Abstract
The use of rare earth elements is a growing trend in diverse industrial activities, leading to the need for eco-friendly approaches to their efficient recovery and reuse. The aim of this work is the development of an environmentally friendly and competitive technology for the recovery of those elements from wastewater. Kinetic and equilibria batch assays were performed with zeolite, with and without bacterial biofilm, to entrap rare earth ions from aqueous solution. Continuous assays were also performed in column setups. Over 90% removal of lanthanum and cerium was achieved using zeolite as sorbent, with and without biofilm, decreasing to 70% and 80%, respectively, when suspended Bacillus cereus was used. Desorption from the zeolite reached over 60%, regardless of the tested conditions. When in continuous flow in columns, the removal yield was similar for all of the rare earth elements tested. Lanthanum and cerium were the elements most easily removed by all tested sorbents when tested in single- or multi-solute solutions, in batch and column assays. Rare earth removal from wastewater in open setups is possible, as well as their recovery by desorption processes, allowing a continuous mode of operation.
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Affiliation(s)
- Óscar Barros
- Centre of Biological Engineering, University of Minho, Campus de Gualtar 4710-057, Braga, Portugal.
| | - Lara Costa
- Centre of Biological Engineering, University of Minho, Campus de Gualtar 4710-057, Braga, Portugal.
| | - Filomena Costa
- Centre of Biological Engineering, University of Minho, Campus de Gualtar 4710-057, Braga, Portugal.
| | - Ana Lago
- Centre of Biological Engineering, University of Minho, Campus de Gualtar 4710-057, Braga, Portugal.
| | - Verónica Rocha
- Centre of Biological Engineering, University of Minho, Campus de Gualtar 4710-057, Braga, Portugal.
| | - Ziva Vipotnik
- Centre of Biological Engineering, University of Minho, Campus de Gualtar 4710-057, Braga, Portugal.
| | - Bruna Silva
- Centre of Biological Engineering, University of Minho, Campus de Gualtar 4710-057, Braga, Portugal.
| | - Teresa Tavares
- Centre of Biological Engineering, University of Minho, Campus de Gualtar 4710-057, Braga, Portugal.
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Gora SL, Andrews SA. Removal of natural organic matter and disinfection byproduct precursors from drinking water using photocatalytically regenerable nanoscale adsorbents. CHEMOSPHERE 2019; 218:52-63. [PMID: 30469004 DOI: 10.1016/j.chemosphere.2018.11.102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 10/23/2018] [Accepted: 11/14/2018] [Indexed: 06/09/2023]
Abstract
Disinfection byproduct precursors (DBPs) were removed from raw surface water obtained from two Canadian drinking water treatment plants via adsorption to two regenerable linear engineered TiO2 nanomaterials (LENs). The temperature employed in the final heating step of the LEN synthesis procedure was varied to produce two distinct nanomaterials, NB 550 and NB 700. The LENs had similar dimensions but differed in terms of surface characteristics, surface area, and crystal structure. Unlike the commercial TiO2 nanoparticles, both LENs were easily removed from the treated water via settling or filtration. Although neither of the LENs were as effective for NOM adsorption as commercial nanoparticles, both were able to remove substantial amounts of DBP precursors. NB 550 reduced the trihalomethane (THM) formation potential of both water sources by up to 40% and their haloacetic acid (HAA) formation potential by approximately 50%. NB 700 reduced the THM formation potential of one water source by 25% and that of the other by 40%. HAA precursor removal by NB 700 ranged from 25% to 30%. The adsorption of DOC, UV254, THM precursors, and HAA precursors by commercial nanoparticles and the LENs fit a modified Freundlich adsorption isotherm model. When the LENs were regenerated via exposure to UVA light they experienced a gradual loss in adsorption capacity of up to 50% over five regeneration cycles. This loss occurred more quickly for the less photoactive of the two nanomaterials, and was affected by water source, suggesting that components of the water matrices may have interfered with regeneration.
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Affiliation(s)
- Stephanie L Gora
- Department of Civil Engineering, University of Toronto, 35 St. George Street, Toronto, Ontario, M5S 1A4, Canada.
| | - Susan A Andrews
- Department of Civil Engineering, University of Toronto, 35 St. George Street, Toronto, Ontario, M5S 1A4, Canada.
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Deihimi N, Irannajad M, Rezai B. Equilibrium and kinetic studies of ferricyanide adsorption from aqueous solution by activated red mud. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 227:277-285. [PMID: 30199723 DOI: 10.1016/j.jenvman.2018.08.089] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Revised: 08/15/2018] [Accepted: 08/23/2018] [Indexed: 06/08/2023]
Abstract
In this study, activated red mud (ARM) was used as a new adsorbent for the removal of ferricyanide anions from aqueous solution. Based on the percentage of ferricyanide removal and ferricyanide adsorption capacity, optimum conditions were evaluated using the response surface method (RSM) and central composite design (CCD). In optimum conditions (pH = 5.6, adsorbent dosage of 2.59 g, ferricyanide concentration of 60 ppm and contact time of 60 min), the percentage of ferricyanide removal and ferricyanide adsorption capacity were obtained as 79.6% and 1.8 mg/g, respectively. The kinetics and equilibrium studies were evaluated by considering the effective parameters including pH and ferricyanide concentration. Kinetic studies were evaluated by kinetic models of pseudo first-order, pseudo-second-order (four different linearized forms), Elovich and intraparticle diffusion. The results of the kinetic study indicated that the mechanism of ferricyanide adsorption onto the ARM adsorbent is a chemisorption interaction by a fast ferricyanide adsorption onto ARM and subsequently the slow diffusion of ferricyanide ions into the ARM inner adsorption sites. The equilibrium studies showed that the adsorption process followed the Langmuir model in which ferricyanide adsorption onto ARM was homogeneous with monolayer adsorption. The results indicated that the activation process of red mud improved adsorbent efficiency and increased the adsorption capacity.
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Affiliation(s)
- Nazanin Deihimi
- Department of Mining & Metallurgical Eng., Amirkabir University of Technology, Tehran, Iran
| | - Mehdi Irannajad
- Department of Mining & Metallurgical Eng., Amirkabir University of Technology, Tehran, Iran.
| | - Bahram Rezai
- Department of Mining & Metallurgical Eng., Amirkabir University of Technology, Tehran, Iran
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31
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Stanciu MC, Nichifor M. Influence of dextran hydrogel characteristics on adsorption capacity for anionic dyes. Carbohydr Polym 2018; 199:75-83. [DOI: 10.1016/j.carbpol.2018.07.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 07/02/2018] [Accepted: 07/04/2018] [Indexed: 12/12/2022]
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Berenjian A, Maleknia L, Chizari Fard G, Almasian A. Mesoporous carboxylated Mn 2 O 3 nanofibers: Synthesis, characterization and dye removal property. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2018.01.050] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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34
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Cojocaru C, Humelnicu AC, Samoila P, Pascariu P, Harabagiu V. Optimized formulation of NiFe 2 O 4 @Ca-alginate composite as a selective and magnetic adsorbent for cationic dyes: Experimental and modeling study. REACT FUNCT POLYM 2018. [DOI: 10.1016/j.reactfunctpolym.2018.02.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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35
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Design of porous strong base anion exchangers bearing N,N-dialkyl 2-hydroxyethyl ammonium groups with enhanced retention of Cr(VI) ions from aqueous solution. REACT FUNCT POLYM 2018. [DOI: 10.1016/j.reactfunctpolym.2018.01.010] [Citation(s) in RCA: 30] [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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Almasian A, Najafi F, Maleknia L, Giahi M. Mesoporous MgO/PPG hybrid nanofibers: synthesis, optimization, characterization and heavy metal removal property. NEW J CHEM 2018. [DOI: 10.1039/c7nj03200e] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this research, mesoporous magnesium oxide/poly(propylene glycol) (MgO/PPG) hybrid nanofibers were synthesized as a new adsorbent for the removal of heavy metal ions from solutions.
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Affiliation(s)
- A. Almasian
- Nanotechnology Research Center
- Islamic Azad University
- South Tehran Branch
- Tehran
- Iran
| | - F. Najafi
- Nanotechnology Research Center
- Islamic Azad University
- South Tehran Branch
- Tehran
- Iran
| | - L. Maleknia
- Nanotechnology Research Center
- Islamic Azad University
- South Tehran Branch
- Tehran
- Iran
| | - M. Giahi
- Nanotechnology Research Center
- Islamic Azad University
- South Tehran Branch
- Tehran
- Iran
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Karri RR, Sahu J, Jayakumar N. Optimal isotherm parameters for phenol adsorption from aqueous solutions onto coconut shell based activated carbon: Error analysis of linear and non-linear methods. J Taiwan Inst Chem Eng 2017. [DOI: 10.1016/j.jtice.2017.08.004] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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38
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Tan K, Hameed B. Insight into the adsorption kinetics models for the removal of contaminants from aqueous solutions. J Taiwan Inst Chem Eng 2017. [DOI: 10.1016/j.jtice.2017.01.024] [Citation(s) in RCA: 384] [Impact Index Per Article: 54.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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39
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El-Aal MAA, Al-Ghobashy MA, Fathalla FAA, El-Saharty YS. Preparation and characterization of pH-responsive polyacrylamide molecularly imprinted polymer: Application to isolation of recombinant and wild type human serum albumin from biological sources. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1046:34-47. [DOI: 10.1016/j.jchromb.2017.01.031] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 01/13/2017] [Accepted: 01/19/2017] [Indexed: 10/20/2022]
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40
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Ghosal PS, Gupta AK. Determination of thermodynamic parameters from Langmuir isotherm constant-revisited. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2016.11.058] [Citation(s) in RCA: 158] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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41
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Abstract
The need to design low-cost adsorbents for the detoxification of industrial effluents has been a growing concern for most environmental researchers. So modelling of experimental data from adsorption processes is a very important means of predicting the mechanisms of various adsorption systems. Therefore, this paper presents an overall review of the applications of adsorption isotherms, the use of linear regression analysis, nonlinear regression analysis, and error functions for optimum adsorption data analysis.
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42
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Sarici-Özdemir Ç, Kiliç F. Kinetics behavior of methylene blue onto agricultural waste. PARTICULATE SCIENCE AND TECHNOLOGY 2016. [DOI: 10.1080/02726351.2016.1240127] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Çiğdem Sarici-Özdemir
- Department of Chemical Engineering, Faculty of Engineering, Inonu University, Malatya, Turkey
| | - Fatih Kiliç
- Department of Chemical Engineering, Faculty of Engineering, Tunceli University, Tunceli, Turkey
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Kemik ÖF, Ngwabebhoh FA, Yildiz U. A response surface modelling study for sorption of Cu2+, Ni2+, Zn2+ and Cd2+ using chemically modified poly(vinylpyrrolidone) and poly(vinylpyrrolidone-co-methylacrylate) hydrogels. ADSORPT SCI TECHNOL 2016. [DOI: 10.1177/0263617416674950] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Ömer F Kemik
- Department of Chemistry, University of Kocaeli, Kocaeli, Turkey
| | | | - Ufuk Yildiz
- Department of Chemistry, University of Kocaeli, Kocaeli, Turkey
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Shaker MA, Yakout AA. Optimization, isotherm, kinetic and thermodynamic studies of Pb(II) ions adsorption onto N-maleated chitosan-immobilized TiO₂ nanoparticles from aqueous media. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 154:145-156. [PMID: 26520475 DOI: 10.1016/j.saa.2015.10.027] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 07/22/2015] [Accepted: 10/22/2015] [Indexed: 05/26/2023]
Abstract
Chitosan, CS was chemically engineered by maleic anhydride via simple protocol to produce N-maleated chitosan, MCS which immobilized on anatase TiO2 to synthesize novel eco-friendly nanosorbent (51±3.8 nm), MCS@TiO2 for cost-effective and efficient removal of Pb(II) ions from aqueous media. The chemical structure, surface properties and morphology of MCS@TiO2 were recognized by FTIR, (1)H NMR, XRD, TEM, DLS and zeta-potential techniques. The relations between %removal of Pb(II) and different analytical parameters such as solution acidity (pH), MCS@TiO2 dosage, time of contact and initial Pb(II) concentration were optimized using response surface methodology (RSM) and Box-Behnken design (BBD) statistical procedures. The fitting of the experimental data to four different isotherm models at optimized conditions was carried out by various statistical treatments including the correlation coefficient (r), coefficient of determination (r(2)) and non-linear Chi-square (χ(2)) test analyses which all confirm the suitability of Langmuir model to explain the adsorption isotherm data. Also, statistics predicted that the pseudo-second-order model is the optimum kinetic model among four applied kinetic models to closely describe the rate equation of the adsorption process. Thermodynamics viewed the adsorption as endothermic and feasible physical process. EDTA could release the sorbed Pb(II) ions from MCS@TiO2 with a recovery above 92% after three sorption-desorption cycles. The novel synthesized nanosorbent is evidenced to be an excellent solid phase extractor for Pb(II) ions from wastewaters.
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Affiliation(s)
- Medhat A Shaker
- Chemistry Department, Faculty of Science, University of Jeddah, Jeddah, Saudi Arabia; Chemistry Department, Faculty of Science, Damanhour University, Damanhour, Egypt.
| | - Amr A Yakout
- Chemistry Department, Faculty of Science, University of Jeddah, Jeddah, Saudi Arabia; Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt
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Fallou H, Cimetière N, Giraudet S, Wolbert D, Le Cloirec P. Adsorption of pharmaceuticals onto activated carbon fiber cloths - Modeling and extrapolation of adsorption isotherms at very low concentrations. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2016; 166:544-555. [PMID: 26606322 DOI: 10.1016/j.jenvman.2015.10.056] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 10/22/2015] [Accepted: 10/31/2015] [Indexed: 06/05/2023]
Abstract
Activated carbon fiber cloths (ACFC) have shown promising results when applied to water treatment, especially for removing organic micropollutants such as pharmaceutical compounds. Nevertheless, further investigations are required, especially considering trace concentrations, which are found in current water treatment. Until now, most studies have been carried out at relatively high concentrations (mg L(-1)), since the experimental and analytical methodologies are more difficult and more expensive when dealing with lower concentrations (ng L(-1)). Therefore, the objective of this study was to validate an extrapolation procedure from high to low concentrations, for four compounds (Carbamazepine, Diclofenac, Caffeine and Acetaminophen). For this purpose, the reliability of the usual adsorption isotherm models, when extrapolated from high (mg L(-1)) to low concentrations (ng L(-1)), was assessed as well as the influence of numerous error functions. Some isotherm models (Freundlich, Toth) and error functions (RSS, ARE) show weaknesses to be used as an adsorption isotherms at low concentrations. However, from these results, the pairing of the Langmuir-Freundlich isotherm model with Marquardt's percent standard of deviation was evidenced as the best combination model, enabling the extrapolation of adsorption capacities by orders of magnitude.
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Affiliation(s)
- Hélène Fallou
- Ecole Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226,11 Allée de Beaulieu, CS 50837, 35708 Rennes Cedex 7, France.
| | - Nicolas Cimetière
- Ecole Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226,11 Allée de Beaulieu, CS 50837, 35708 Rennes Cedex 7, France.
| | - Sylvain Giraudet
- Ecole Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226,11 Allée de Beaulieu, CS 50837, 35708 Rennes Cedex 7, France.
| | - Dominique Wolbert
- Ecole Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226,11 Allée de Beaulieu, CS 50837, 35708 Rennes Cedex 7, France.
| | - Pierre Le Cloirec
- Ecole Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226,11 Allée de Beaulieu, CS 50837, 35708 Rennes Cedex 7, France.
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Moussout H, Ahlafi H, Aazza M, Zegaoui O, El Akili C. Adsorption studies of Cu(II) onto biopolymer chitosan and its nanocomposite 5%bentonite/chitosan. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2016; 73:2199-2210. [PMID: 27148722 DOI: 10.2166/wst.2016.075] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Chitosan (CS) and nanocomposite 5%bentonite/chitosan (5%Bt/CS) prepared from the natural biopolymer CS were tested to remove Cu(II) ions using a batch adsorption experiment at various temperatures (25, 35 and 45°C). X-ray diffraction, Fourier transform infrared spectroscopy, and thermogravimetric analysis/differential thermal analysis (TGA/DTA) were used in CS and the nanocomposite characterisation. This confirmed the exfoliation of bentonite (Bt) to form the nanocomposite. The adsorption kinetics of copper on both solids was found to follow a pseudo-second-order law at each studied temperature. The Cu(II) adsorption capacity increased as the temperature increased from 25 to 45°C for nanocomposite adsorbent but slightly increased for CS. The data were confronted to the nonlinear Langmuir, Freundlich and Redlich-Peterson models. It was found that the experimental data fitted very well the Langmuir isotherm over the whole temperature and concentration ranges. The maximum monolayer adsorption capacity for the Cu(II) was 404-422 mg/g for CS and 282-337 mg/g for 5%Bt/CS at 25-45°C. The thermodynamic study showed that the adsorption process was spontaneous and endothermic. The complexation of Cu(II) with NH(2) and C = O groups as active sites was found to be the main mechanism in the adsorption processes.
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Affiliation(s)
- Hamou Moussout
- Laboratory of Chemistry Biology Applied to the Environment, Faculty of Sciences, Moulay Ismaïl University, BP 11201-Zitoune, Meknès 50060, Morocco E-mail:
| | - Hammou Ahlafi
- Laboratory of Chemistry Biology Applied to the Environment, Faculty of Sciences, Moulay Ismaïl University, BP 11201-Zitoune, Meknès 50060, Morocco E-mail:
| | - Mustapha Aazza
- Laboratory of Chemistry Biology Applied to the Environment, Faculty of Sciences, Moulay Ismaïl University, BP 11201-Zitoune, Meknès 50060, Morocco E-mail:
| | - Omar Zegaoui
- Laboratory of Chemistry Biology Applied to the Environment, Faculty of Sciences, Moulay Ismaïl University, BP 11201-Zitoune, Meknès 50060, Morocco E-mail:
| | - Charaf El Akili
- Laboratory of Mechanics Energetics and Materials, Ecole Nationale Supérieure d'Arts et Métiers, Moulay Ismaïl University, Meknes, Morocco
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Fard NE, Fazaeli R, Ghiasi R. Band Gap Energies and Photocatalytic Properties of CdS and Ag/CdS Nanoparticles for Azo Dye Degradation. Chem Eng Technol 2015. [DOI: 10.1002/ceat.201500116] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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48
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Kiliç F, Sarici-Özdemir Ç. Experimental and modeling studies of methylene blue adsorption onto particles of peanut shell. PARTICULATE SCIENCE AND TECHNOLOGY 2015. [DOI: 10.1080/02726351.2015.1102188] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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49
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Buica GO, Birzan L, Popescu LR, Ivanov AA, Ungureanu EM. Thermodynamics of interactions between lead(II) and cadmium(II) ions and azulene-based complexing polymer films. J Solid State Electrochem 2015. [DOI: 10.1007/s10008-015-3055-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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50
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Use of refuse-derived fuel waste for the adsorption of 4-chlorophenol and dyes from aqueous solution: Equilibrium and kinetics. J Taiwan Inst Chem Eng 2014. [DOI: 10.1016/j.jtice.2014.07.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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