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Evaluation of Zeolite as a Potential Reactive Medium in a Permeable Reactive Barrier (PRB): Batch and Column Studies. GEOSCIENCES 2020. [DOI: 10.3390/geosciences10020059] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The purpose of this work is to evaluate the capacity of a natural zeolite to be used as a reactive material in a permeable reactive barrier (PRB) to remove inorganic contaminants from groundwater. To this aim, zeolite samples were subjected to characterization tests, column experiments, batch tests and a flushing process to evaluate the adsorption and desorption capacities of the zeolite. In the column experiments, the samples were subjected to eight successive cycles involving the percolation of a potassium aqueous solution (1500 mg/L) and a subsequent flushing process with water. Batch tests were conducted by mixing 20 g of zeolite with 100 mL of single-element aqueous solutions of K and Zn with concentrations of 200 mg/L. The results indicate that the zeolite rock is composed predominantly of clinoptilolite species and has a Si/Al ratio of 6.8, a high cationic exchange capacity (CEC) of 180 cmolc/kg and a high K+ adsorption rate with a removal efficiency of 78%. The adsorption isotherms of the zeolite follow the Langmuir model and are well fit by a pseudo-second-order kinetic model showing a high correlation coefficient (r2 > 0.999) for both K+ and Zn2+ cations. Additionally, the contaminant transport parameters for K+ ions (Rd = 24.9; Dh = 1.32 × 10–2 cm2/s and α = 1.42) reveal that the zeolite is resistant to the dispersion of ions in the barrier, indicating that the material has advantageous characteristics for use in a PRB. However, the flushing process of the material is not efficient, indicating that the appropriate use of the zeolite is in clean-up systems in which the adsorbent material can be exchanged after losing its efficiency as a reactive barrier.
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Abdel Maksoud M, Elgarahy AM, Farrell C, Al-Muhtaseb AH, Rooney DW, Osman AI. Insight on water remediation application using magnetic nanomaterials and biosorbents. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2019.213096] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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53
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He P, Ding J, Qin Z, Tang L, Haw KG, Zhang Y, Fang Q, Qiu S, Valtchev V. Binder-free preparation of ZSM-5@silica beads and their use for organic pollutant removal. Inorg Chem Front 2020. [DOI: 10.1039/d0qi00259c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Organic structure directing agent (OSDA)- and binder-free preparation of ZSM-5@silica beads and their use for aniline removal.
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Affiliation(s)
- Ping He
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- Jilin University
- Changchun 130012
- China
| | - Jiehua Ding
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- Jilin University
- Changchun 130012
- China
| | - Zhengxing Qin
- State Key Laboratory of Heavy Oil Processing
- College of Chemical Engineering
- China University of Petroleum (East China)
- Qingdao 266580
- China
| | - Lingxue Tang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- Jilin University
- Changchun 130012
- China
| | - Kok-Giap Haw
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- Jilin University
- Changchun 130012
- China
| | - Yiying Zhang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- Jilin University
- Changchun 130012
- China
| | - Qianrong Fang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- Jilin University
- Changchun 130012
- China
| | - Shilun Qiu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- Jilin University
- Changchun 130012
- China
| | - Valentin Valtchev
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- Jilin University
- Changchun 130012
- China
- Normandie Univ
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Synthesis of pearl necklace-like ZIF-8@chitosan/PVA nanofiber with synergistic effect for recycling aqueous dye removal. Carbohydr Polym 2020; 227:115364. [DOI: 10.1016/j.carbpol.2019.115364] [Citation(s) in RCA: 107] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 09/17/2019] [Accepted: 09/20/2019] [Indexed: 11/22/2022]
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Mirjavadi ES, M A Tehrani R, Khadir A. Effective adsorption of zinc on magnetic nanocomposite of Fe 3O 4/zeolite/cellulose nanofibers: kinetic, equilibrium, and thermodynamic study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:33478-33493. [PMID: 31529345 DOI: 10.1007/s11356-019-06165-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Accepted: 08/09/2019] [Indexed: 06/10/2023]
Abstract
In this paper, the adsorption behavior of zinc onto magnetic zeolite/cellulose nanofibers (MZNF) was studied. The prepared adsorbent was characterized by SEM, FTIR, and VSM analyses. The mass ratio of adsorbent in composite, pH, contact time, adsorbent dosage, initial Zn+2 concentration, temperature, and agitation speed were investigated in batch experiments. The results showed that zeolite played an important role in the prepared nanocomposite due to its great surface area. pH 7 exhibited the highest Zn+2 removal efficiency. Rapid adsorption at the first 30 min of the reaction is one of the advantages of the prepared adsorbents. Moreover, increase at temperature led to higher efficiency and maximum efficiency was attained at 30 °C. Under optimum conditions, MZNF showed removal efficiency of 96% and maximum adsorption capacity of 9.45 mg/g. The presence of the competing ions did not reduce the efficiency of the process and adsorption efficiency was higher than 93%. The calculated RSD of 1.42% exhibits the suitability of the process. Equilibrium data were examined by various isotherms and kinetics equations. It was concluded that Pseudo second-order model and Langmuir models described the adsorption process well. Based on these results, MZNF obtained in this work can be served as a promising candidate for Zn+2 removal in wastewater.
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Affiliation(s)
- Elmira S Mirjavadi
- Department of Chemistry, Faculty of Basic Sciences, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Ramin M A Tehrani
- Department of Chemistry, Yadegar Imam Khomeini (RAH) Shahre Rey Branch, Islamic Azad University, Tehran, Iran.
| | - Ali Khadir
- Young Researcher and Elite Club, Yadegar Imam Khomeini (RAH) Share Rey Branch, Islamic Azad University, Tehran, Iran
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56
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Wang M, He L, Wang M, Chen L, Yao S, Jiang W, Chen Y. Simultaneous removal of NH 3-N and COD from shale gas distillate via an integration of adsorption and photo-catalysis: A hybrid approach. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 249:109342. [PMID: 31400588 DOI: 10.1016/j.jenvman.2019.109342] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 07/17/2019] [Accepted: 07/30/2019] [Indexed: 06/10/2023]
Abstract
In view of the circulation cooling water (CCW) quality for refining and petrochemical enterprises, distillates obtained from shale gas produced water after alkali precipitation, filtration and multi-effect evaporation required further purification to remove NH3-N and COD. Illumination, adsorption, photocatalysis after adsorption equilibrium (AP) and integration of adsorption and photocatalysis (IOAP) were carried out to optimize the distillates treatment. AP and IOAP treatments were feasible for the simultaneous removal of NH3-N and COD from the target distillate, while IOAP treatment had much better adaptability and practicability due to its economic cost and easy operation. In IOAP, the removal rate of COD and NH3-N was high up to 59.0% and 88.9%, respectively, under Xenon lamp illumination (25 A) for 60 min with 10 g/L zeolite. The residual concentration of COD and NH3-N were 73.9 mg/L and 23.0 mg/L, respectively, which could well meet the CCW quality. Furthermore, the results of zeolites characterization (SEM-EDX, BET and FTIR) and kinetics analysis showed that the removal of COD in IOAP process mainly depended on the effect of photocatalysis excited by zeolite, while the removal of NH3-N was in virtue of the synergistic effect of photocatalysis and adsorption.
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Affiliation(s)
- Meicheng Wang
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, China
| | - Lizhi He
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, China
| | - Min Wang
- Southwest Oil and Gas Branch Co., SINOPEC, Chengdu, 610065, China
| | - Lin Chen
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, China
| | - Sicong Yao
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, China
| | - Wenju Jiang
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, China
| | - Yao Chen
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, China.
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57
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Environmental-Friendly Modifications of Zeolite to Increase Its Sorption and Anion Exchange Properties, Physicochemical Studies of the Modified Materials. MATERIALS 2019; 12:ma12193213. [PMID: 31575026 PMCID: PMC6803845 DOI: 10.3390/ma12193213] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 09/24/2019] [Accepted: 09/28/2019] [Indexed: 11/16/2022]
Abstract
Zeolites, naturally possessing a high negative surface charge and large specific surface, are used in agriculture as cationic fertilizers, water holders, heavy metals, and organic pollutants sorbents. Since some nutrients occur in anionic forms, there is a need to modify the zeolite surface to hold anions. In this study, hydrogen (hydrochloric acid), iron (Fe2+ and Fe3+), and aluminum cations as well as the influence of sodium hydroxide modifiers on the specific surface area, water vapor, adsorption energy, fractal dimension, mesopore volumes and radii, electrokinetic (zeta) potential, and isoelectric point were investigated. The use of alkali solution did not affect the zeolite properties significantly, whereas hydrogen, iron, and treatments with aluminum cations resulted in an increase in the specific surface area, mesopore volumes, and radii, and a decrease in the water-binding forces. Aluminum cations were the most effective in recharging the zeolite surface from negative to positive, shifting the isoelectric point toward the highest values. Calcination enlarged the negative surface charge and mesopore radius, and diminished the surface area and mesopore volume. The modified zeolites are promising carriers of anionic nutrients, large surface area sorbents, and suppliers of water for plant roots in soil.
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Sadeh P, Najafipour I, Gholami M. Adsorption kinetics of halloysite nanotube and modified halloysite at the Palm oil-water interface and Pickering emulsion stabilized by halloysite nanotube and modified halloysite nanotube. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.05.034] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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59
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Du C, Yu J, Sun W, Han H, Hu Y, Chen P, Hou P, Liu R, Wang L, Yang Y, Liu R, Sun L. Purification of starch and phosphorus wastewater using core-shell magnetic seeds prepared by sulfated roasting. J Environ Sci (China) 2019; 81:4-16. [PMID: 30975328 DOI: 10.1016/j.jes.2019.02.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Revised: 02/17/2019] [Accepted: 02/18/2019] [Indexed: 06/09/2023]
Abstract
Core-shell magnetic seeds with certain adsorption capacity that were prepared by sulfated roasting, served as the core of a magnetic separation technology for purification of starch wastewater. XRD and SEM results indicate that magnetite's surface transformed to be porous α-Fe2O3 structure. Compared with magnetite particles, the specific surface area was significantly improved to be 8.361 from 2.591 m2/g, with little decrease in specific susceptibility. Zeta potential, FT-IR and XPS experiments indicate that both phosphate and starch adsorbed on the surface of the core-shell magnetic seeds by chemical adsorption, which fits well with the Langmuir adsorption model. The porous surface structure of magnetic seeds significantly contributes to the adsorption of phosphate and starch species, which can be efficiently removed to be 1.51 mg/L (phosphate) and 9.51 mg/L (starch) using magnetic separation.
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Affiliation(s)
- Chunjie Du
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources, Central South University, Changsha 410083, China
| | - Jinsheng Yu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources, Central South University, Changsha 410083, China
| | - Wei Sun
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources, Central South University, Changsha 410083, China
| | - Haisheng Han
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources, Central South University, Changsha 410083, China.
| | - Yuehua Hu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources, Central South University, Changsha 410083, China.
| | - Pan Chen
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources, Central South University, Changsha 410083, China
| | - Panpan Hou
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources, Central South University, Changsha 410083, China
| | - Runqing Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources, Central South University, Changsha 410083, China
| | - Li Wang
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources, Central South University, Changsha 410083, China
| | - Yue Yang
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources, Central South University, Changsha 410083, China
| | - Ruohua Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources, Central South University, Changsha 410083, China
| | - Lei Sun
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources, Central South University, Changsha 410083, China
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Hydrophilic thiourea-modified poly(acrylonitrile-co-acrylic acid) adsorbent: preparation, characterization, and dye removal performance. IRANIAN POLYMER JOURNAL 2019. [DOI: 10.1007/s13726-019-00716-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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61
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Liu Y, Guo L, Huang H, Dou J, Huang Q, Gan D, Chen J, Li Y, Zhang X, Wei Y. Facile preparation of magnetic composites based on carbon nanotubes: Utilization for removal of environmental pollutants. J Colloid Interface Sci 2019; 545:8-15. [DOI: 10.1016/j.jcis.2019.03.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Revised: 02/28/2019] [Accepted: 03/04/2019] [Indexed: 10/27/2022]
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Sabarinathan C, Karuppasamy P, Vijayakumar C, Arumuganathan T. Development of methylene blue removal methodology by adsorption using molecular polyoxometalate: Kinetics, Thermodynamics and Mechanistic Study. Microchem J 2019. [DOI: 10.1016/j.microc.2019.01.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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