1
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Hu H, Yang Y, Zhou G, Wang N, Gu H. Hydrothermal chemical modification of red mud for efficient adsorption of methylene blue. ENVIRONMENTAL TECHNOLOGY 2024:1-14. [PMID: 39150860 DOI: 10.1080/09593330.2024.2391078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2024] [Accepted: 08/02/2024] [Indexed: 08/18/2024]
Abstract
Red mud (RM) is the industrial solid waste produced after alumina extraction from bauxite, and most RM is directly discharged to the landfill yards without any treatment. In this study, modified red mud (MRM) was synthesized by a hydrothermal chemical modification method as an efficient adsorbent for methylene blue (MB) removal. The prepared MRM was characterized by X-ray fluorescence spectroscopy, X-ray diffraction, scanning electron microscope, transmission electron microscope, and Fourier transform infrared spectrometer. The effects of reaction time, initial MB concentrations, MRM dosage, temperature, and system pH were investigated in the MB batch adsorption experiments. The results showed that the modification method increased the specific surface area of RM material from 16.72 to 414.47 m2/g. The maximum adsorption capacity of MRM for MB was 280.18 mg/g under the conditions of initial MB concentration of 1000 mg/L, reaction time of 300 min, temperature of 25 ℃, and natural pH of 6.06. Meanwhile, the adsorption kinetics and equilibrium isotherms were demonstrated to fit well with the pseudo-second-order kinetic model and Temkin isotherm, respectively. This study provides a new method for the valorization of RM and demonstrates that MRM can be used as a low cost and environmentally friendly potential adsorbent for the removal of MB from wastewater.
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Affiliation(s)
- Haiyi Hu
- Key Laboratory of High-Temperature and High-Pressure Study of the Earth's Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, People's Republic of China
- University of the Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Yongqiong Yang
- School of Geography and Environmental Science, Guizhou Normal University, Guiyang, People's Republic of China
| | - Guiyong Zhou
- Key Laboratory of High-Temperature and High-Pressure Study of the Earth's Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, People's Republic of China
- University of the Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Ning Wang
- Key Laboratory of High-Temperature and High-Pressure Study of the Earth's Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, People's Republic of China
| | - Hannian Gu
- Key Laboratory of High-Temperature and High-Pressure Study of the Earth's Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, People's Republic of China
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2
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Smith S, Gaston L, Beasley J, Wang J, Padilla J, Sun W. Ironstone and red mud barriers to reduce subsurface movement of soil phosphorus. JOURNAL OF ENVIRONMENTAL QUALITY 2024. [PMID: 39044434 DOI: 10.1002/jeq2.20601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 06/12/2024] [Indexed: 07/25/2024]
Abstract
Loss of phosphorus in seepage may contribute to eutrophication of downstream water bodies. This study examined the potential use of pedogenic ironstone and untreated red mud (bauxite refining residue) as P sorbents in a permeable reactive barrier (PRB) to mitigate such loss. Effects of ironstone and red mud on P sorption (batch), transport (columns), saturated hydraulic conductivity (KS), and growth of common bermudagrass (Cynodon dactylon; greenhouse) were examined. Both materials had sorption maxima of ∼30 mmol P kg-1 or about five times that of a P-enriched sandy soil; however, sorption by red mud greatly increased with decreasing pH. Transport of P through columns of ironstone and red mud (diluted with nonreactive sand) was similar and slower compared to soil + sand. However, when red mud was mixed with soil, increased sorption at lower pH resulted in greater P retention compared to ironstone + soil (76% vs. 13%). Although addition of ironstone to soil up to 20% did not reduce KS, red mud at even 5% did. Soil amendment with red mud increased bermudagrass growth and P uptake. Given long-term neutralization of red mud in an acidic soil and increased P sorption, it may be suitable in a PRB if incorporated at a low rate and/or co-incorporated with a coarser material.
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Affiliation(s)
- Samantha Smith
- School of Plant, Environmental and Soil Sciences, LSU Agricultural Center, Baton Rouge, Louisiana, USA
| | - Lewis Gaston
- School of Plant, Environmental and Soil Sciences, LSU Agricultural Center, Baton Rouge, Louisiana, USA
| | - Jeffery Beasley
- Department of Biology, University of North Carolina at Pembroke, Pembroke, North Carolina, USA
| | - Jim Wang
- School of Plant, Environmental and Soil Sciences, LSU Agricultural Center, Baton Rouge, Louisiana, USA
| | - Josh Padilla
- School of Plant, Environmental and Soil Sciences, LSU Agricultural Center, Baton Rouge, Louisiana, USA
| | - Wenguang Sun
- School of Plant, Environmental and Soil Sciences, LSU Agricultural Center, Baton Rouge, Louisiana, USA
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3
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Wang Z, Zhu G, Zhou Y, Wen Z, Wu D. Lanthanum-modified tobermorite synthesized from fly ash for efficient phosphate removal. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:29584-29594. [PMID: 38580876 DOI: 10.1007/s11356-024-33153-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 03/27/2024] [Indexed: 04/07/2024]
Abstract
Phosphate removal from water by lanthanum-modified tobermorite synthesized from fly ash (LTFA) with different lanthanum concentrations was studied. LTFA samples were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, and Brunauer‒Emmett‒Teller specific surface area analysis. The results showed that the LTFA samples were mainly composed of mesoporous tobermorite-11 Å, and LTFA1 with a lanthanum concentration of 0.15 M had a high specific surface area (83.82 m2/g) and pore volume (0.6778 cm3/g). The phosphate adsorption capacities of LTFA samples were highest at pH 3 and gradually decreased with increasing pH. The phosphate adsorption kinetics data on LTFA samples were most accurately described by the Elovich model. The adsorption isotherms were in the strongest agreement with the Temkin model, and LTFA1 showed the highest phosphate adsorption capacity (282.51 mg P/g), which was higher than that of most other lanthanum-modified adsorbents. LTFA1 presented highly selective adsorption of phosphate with other coexisting ions (HCO3-, Cl-, SO42-, and NO3-). In addition, phosphate was adsorbed onto LTFA samples by forming inner-sphere phosphate complexes and amorphous lanthanum phosphate. This study provides technical support for development of efficient fly ash-based phosphate adsorbents.
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Affiliation(s)
- Zehua Wang
- School of Resources and Environment, Nanchang University, Nanchang, 330031, China.
| | - Guanyu Zhu
- School of Resources and Environment, Nanchang University, Nanchang, 330031, China
| | - Yongwei Zhou
- School of Resources and Environment, Nanchang University, Nanchang, 330031, China
| | - Zhencheng Wen
- School of Resources and Environment, Nanchang University, Nanchang, 330031, China
| | - Daishe Wu
- School of Materials and Chemical Engineering, Pingxiang University, Pingxiang, 337000, China
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4
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Yang Z, Li L, Wang Y. Mechanism of Phosphate Desorption from Activated Red Mud Particle Adsorbents. Molecules 2024; 29:974. [PMID: 38474486 DOI: 10.3390/molecules29050974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Revised: 02/11/2024] [Accepted: 02/19/2024] [Indexed: 03/14/2024] Open
Abstract
Herein, activated red mud particles are used as adsorbents for phosphorus adsorption. HCl solutions with different concentrations and deionized water are employed for desorption tests, and the desorption mechanism under the following optimal conditions is investigated: HCl concentration = 0.2 mol/L, desorbent dosage = 0.15 L/g, desorption temperature = 35 °C, and desorption time = 12 h. Under these conditions, the phosphate desorption rate and amount reach 99.11% and 11.29 mg/g, respectively. Notably, the Langmuir isothermal and pseudo-second-order kinetic linear models exhibit consistent results: monomolecular-layer surface desorption is dominant, and chemical desorption limits the rate of surface desorption. Thermodynamic analysis indicates that phosphorus desorption by the desorbents is spontaneous and that high temperatures promote such desorption. Moreover, an intraparticle diffusion model demonstrates that the removal of phosphorus in the form of precipitation from the surface of an activated hematite particle adsorbent primarily occurs via a chemical reaction, and surface micromorphological analysis indicates that desorption is primarily accompanied by Ca dissolution, followed by Al and Fe dissolutions. The desorbents react with the active elements in red mud, and the vibrations of the [SiO4]4- functional groups of calcium-iron garnet and calcite or aragonite disappear. Further, in Fourier-transform infrared spectra, the intensities of the peaks corresponding to the PO43- group considerably decrease. Thus, desorption primarily involves monomolecular-layer chemical desorption.
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Affiliation(s)
- Zhiwen Yang
- Mining College, Guizhou University, Guiyang 550025, China
- National & Local Joint Laboratory of Engineering for Effective Utilization of Regional Mineral Resources from Karst Areas, Guiyang 550025, China
- Guizhou Key Laboratory of Comprehensive Utilization of Nonmetallic Mineral Resources, Guiyang 550025, China
| | - Longjiang Li
- Mining College, Guizhou University, Guiyang 550025, China
- National & Local Joint Laboratory of Engineering for Effective Utilization of Regional Mineral Resources from Karst Areas, Guiyang 550025, China
- Guizhou Key Laboratory of Comprehensive Utilization of Nonmetallic Mineral Resources, Guiyang 550025, China
| | - Yalan Wang
- Mining College, Guizhou University, Guiyang 550025, China
- National & Local Joint Laboratory of Engineering for Effective Utilization of Regional Mineral Resources from Karst Areas, Guiyang 550025, China
- Guizhou Key Laboratory of Comprehensive Utilization of Nonmetallic Mineral Resources, Guiyang 550025, China
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5
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Fang X, Zhang D, Chang Z, Li R, Meng S. Phosphorus removal from water by the metal-organic frameworks (MOFs)-based adsorbents: A review for structure, mechanism, and current progress. ENVIRONMENTAL RESEARCH 2024; 243:117816. [PMID: 38056614 DOI: 10.1016/j.envres.2023.117816] [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: 10/17/2023] [Revised: 11/14/2023] [Accepted: 11/27/2023] [Indexed: 12/08/2023]
Abstract
Efficacious phosphate removal is essential for mitigating eutrophication in aquatic ecosystems and complying with increasingly stringent phosphate emission regulations. Chemical adsorption, characterized by simplicity, prominent treatment efficiency, and convenient recovery, is extensively employed for profound phosphorus removal. Metal-organic frameworks (MOFs)-derived metal/carbon composites, surpassing the limitations of separate components, exhibit synergistic effects, rendering them tremendously promising for environmental remediation. This comprehensive review systematically summarizes MOFs-based materials' properties and their structure-property relationships tailored for phosphate adsorption, thereby enhancing specificity towards phosphate. Furthermore, it elucidates the primary mechanisms influencing phosphate adsorption by MOFs-based composites. Additionally, the review introduces strategies for designing and synthesizing efficacious phosphorus capture and regeneration materials. Lastly, it discusses and illuminates future research challenges and prospects in this field. This summary provides novel insights for future research on superlative MOFs-based adsorbents for phosphate removal.
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Affiliation(s)
- Xiaojie Fang
- Department of Resources and Environmental Science, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China
| | - Di Zhang
- Department of Resources and Environmental Science, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China; Key Laboratory of Black Soil Protection and Restoration, Harbin, Heilongjiang, 150030, China.
| | - Zhenfeng Chang
- Department of Resources and Environmental Science, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China
| | - Ruoyan Li
- Department of Resources and Environmental Science, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China
| | - Shuangshuang Meng
- Department of Resources and Environmental Science, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China
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6
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Ketwong T, Cholwatthanatanakorn N, Ding L, Wibowo H, Areeprasert C. Utilization of bagasse fly ash for the production of low-cost ammonia adsorbents in poultry farm. WASTE MANAGEMENT (NEW YORK, N.Y.) 2023; 172:347-357. [PMID: 37951058 DOI: 10.1016/j.wasman.2023.10.034] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 10/13/2023] [Accepted: 10/29/2023] [Indexed: 11/13/2023]
Abstract
NH3 pollution is a significant problem in the poultry farming because excess NH3 can negatively impact chicken health and stunt their growth. Therefore, this study investigated the low-cost production of bagasse fly ash (FA)-a byproduct of the sugar industry-as an NH3 adsorbent. Hydrothermal carbonization and activation were applied to enhance NH3 adsorption using FA. In the experiments, the adsorption capabilities were improved using industrial waste materials mixed with bamboo char or red mud. The experimental results indicate that bagasse FA mixed with bamboo hydrochar under 10 % loading achieved an NH3 adsorption capacity of ∼ 1.02 mg-NH3/g-adsorbent, or ∼ 55 % of that of the commercial adsorbent. To avoid secondary pollution and provide the spent absorbents with an added value, their use in CO2 capture applications was evaluated. The results showed that the adsorbent had a 0.28 mmol-CO2/g-adsorbent capacity.
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Affiliation(s)
- Tulakarn Ketwong
- Department of Mechanical Engineering, Faculty of Engineering, Kasetsart University, 50 Ngam Wong Wan Road, Lat Yao, Chatuchak, Bangkok 10900, Thailand
| | - Natchapon Cholwatthanatanakorn
- Department of Mechanical Engineering, Faculty of Engineering, Kasetsart University, 50 Ngam Wong Wan Road, Lat Yao, Chatuchak, Bangkok 10900, Thailand
| | - Lu Ding
- Institute of Clean Coal Technology, East China University of Science and Technology, Shanghai 200237, PR China
| | - Haryo Wibowo
- Department of Mechanical Engineering, Faculty of Engineering, Kasetsart University, 50 Ngam Wong Wan Road, Lat Yao, Chatuchak, Bangkok 10900, Thailand
| | - Chinnathan Areeprasert
- Department of Mechanical Engineering, Faculty of Engineering, Kasetsart University, 50 Ngam Wong Wan Road, Lat Yao, Chatuchak, Bangkok 10900, Thailand.
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7
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Gubernat S, Masłoń A, Czarnota J, Koszelnik P, Chutkowski M, Tupaj M, Gumieniak J, Kramek A, Galek T. Removal of Phosphorus with the Use of Marl and Travertine and Their Thermally Modified Forms-Factors Affecting the Sorption Capacity of Materials and the Kinetics of the Sorption Process. MATERIALS (BASEL, SWITZERLAND) 2023; 16:1225. [PMID: 36770230 PMCID: PMC9920275 DOI: 10.3390/ma16031225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 01/21/2023] [Accepted: 01/27/2023] [Indexed: 06/18/2023]
Abstract
The paper presents new reactive materials, namely marl and travertine, and their thermal modifications and the Polonite® material, analyzing their phosphorus removal from water and wastewater by sorption. Based on the experimental data, an analysis of the factors influencing the sorption capacity of the materials, such as the material dose, pH of the initial solution, process temperature, surface structure, and morphology, was performed. Adsorption isotherms and maximum sorption capacities were determined with the use of the Langmuir, Freundlich, Langmuir-Freundlich, Tóth, Radke-Praunitz, and Marczewski-Jaroniec models. The kinetics of the phosphorus sorption process of the tested materials were described using reversible and irreversible pseudo-first order, pseudo-second order, and mixed models. The natural materials were the most sensitive to changes in the process conditions, such as temperature and pH. The thermal treatment process stabilizes the marl and travertine towards materials with a more homogeneous surface in terms of energy and structure. The fitted models of the adsorption isotherms and kinetic models allowed for an indication of a possible phosphorus-binding mechanism, as well as the maximum amount of this element that can be retained on the materials' surface under given conditions-raw marl (43.89 mg P/g), raw travertine (140.48 mg P/g), heated marl (80.44 mg P/g), heated travertine (282.34 mg P/g), and Polonite® (54.33 mg P/g).
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Affiliation(s)
- Sylwia Gubernat
- Doctoral School of Engineering and Technical Sciences at the Rzeszow University of Technology, Powstańców Warszawy 12, 35-959 Rzeszów, Poland
- Inżynieria Rzeszów S.A., ul. Podkarpacka 59A, 35-082 Rzeszów, Poland
| | - Adam Masłoń
- Department of Environmental and Chemistry Engineering, Rzeszow University of Technology, Powstańców Warszawy 6, 35-959 Rzeszów, Poland
| | - Joanna Czarnota
- Department of Environmental and Chemistry Engineering, Rzeszow University of Technology, Powstańców Warszawy 6, 35-959 Rzeszów, Poland
| | - Piotr Koszelnik
- Department of Environmental and Chemistry Engineering, Rzeszow University of Technology, Powstańców Warszawy 6, 35-959 Rzeszów, Poland
| | - Marcin Chutkowski
- Department of Chemical and Process Engineering, Rzeszow University of Technology, Powstańców Warszawy 6, 35-959 Rzeszów, Poland
| | - Mirosław Tupaj
- Department of Component Manufacturing and Production Organization, Rzeszow University of Technology, ul. Kwiatkowskiego 4, 37-450 Stalowa Wola, Poland
| | - Justyna Gumieniak
- Department of Component Manufacturing and Production Organization, Rzeszow University of Technology, ul. Kwiatkowskiego 4, 37-450 Stalowa Wola, Poland
| | - Agnieszka Kramek
- Department of Component Manufacturing and Production Organization, Rzeszow University of Technology, ul. Kwiatkowskiego 4, 37-450 Stalowa Wola, Poland
| | - Tomasz Galek
- Department of Integrated Design Systems and Tribology, Rzeszow University of Technology, ul. Kwiatkowskiego 4, 37-450 Stalowa Wola, Poland
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8
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Application of Mesopore-Activated Red Mud for Phosphorus Adsorption. ADSORPT SCI TECHNOL 2022. [DOI: 10.1155/2022/8351796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
In this paper, the mesopore-activated red mud (M-ARM) was prepared by treating red mud (RM) with acid under an ultrasonic batch and through heat treatment at 750 C. The surface area and adsorption average pore width of M-ARM were calculated and obtained values of 13.408 m2 g-1 and 25.160 nm, respectively. Therefore, the maximum adsorption capacity of M-ARM for phosphorus was
at 318 K and
. At a low initial concentration (75 mg L-1), the phosphorus removal capacity by M-ARM material was up to
at 313 K. With the temperature scales varying from 298 to 313 K, the values of Gibbs free energy change (
) were negative and also vary from -37.47 to -36.68. The phosphorus adsorption process in an aqueous solution is spontaneous, and this adsorption process was exothermic with enthalpy change
. From the results of investigations and calculations of thermodynamic values, kinetics, and adsorption capacity of materials, we can confirm that the materials in this study had a low-cost and potential material for applications to treat phosphorus-contaminated water. In addition, the adsorption kinetics of this material for phosphorus were also studied and discussed.
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9
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Mi H, Yi L, Wu Q, Xia J, Zhang B. A review of comprehensive utilization of red mud. WASTE MANAGEMENT & RESEARCH : THE JOURNAL OF THE INTERNATIONAL SOLID WASTES AND PUBLIC CLEANSING ASSOCIATION, ISWA 2022; 40:1594-1607. [PMID: 35875958 DOI: 10.1177/0734242x221107987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Red mud (RM) is a solid waste generated during the process of alumina production. RM has already posed a serious environmental threat with the development of the alumina refining industry. The comprehensive utilization of RM has attracted much attention due to its large-scale generation and harmful nature. This paper introduces the characteristics and state of RM and summarizes the relevant research on the comprehensive utilization of RM. The results show that comprehensive utilization of RM is mainly focused on the preparation of building materials, the extraction of valuable metals, catalyst synthesis and environmental protection. Besides, the article discusses the existing problems while utilizing RM. Prospects and suggestions for different utilization methods of RM are proposed.
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Affiliation(s)
- Hongcheng Mi
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan, China
| | - Longsheng Yi
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan, China
| | - Qian Wu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan, China
| | - Jin Xia
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan, China
| | - Binghang Zhang
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan, China
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10
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Improving Fuel Properties and Hydrocarbon Content from Residual Fat Pyrolysis Vapors over Activated Red Mud Pellets in Two-Stage Reactor: Optimization of Reaction Time and Catalyst Content. ENERGIES 2022. [DOI: 10.3390/en15155595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Catalytic upgrading of vapors from pyrolysis of triglycerides materials is a promising approach to achieve better conversions of hydrocarbons and production of liquid biofuels. Catalytic cracking often shows incomplete conversion due to distillation of initial reaction products and the addition of a second catalytic reactor, whereas pyrolytic vapors are made in contact to a solid catalyst was applied to improve the physical-chemical properties and quality of bio-oil. This work investigated the effect of catalyst content and reaction time by catalytic upgrading from pyrolysis vapors of residual fat at 450 °C and 1.0 atmosphere, on the yields of reaction products, physicochemical properties (density, kinematic viscosity, refractive index, and acid value), and chemical composition of organic liquid products (OLP), over a catalyst fixed bed reactor, in semi pilot scale. Pellets of red mud chemically activated with 1.0 M HCl were used as catalysts. The thermal catalytic cracking of residual fat show OLP yields from 54.4 to 84.88 (wt.%), aqueous phase yields between 2.21 and 2.80 (wt.%), solid phase yields (coke) between 1.30 and 8.60 (wt.%), and gas yields from 11.61 to 34.22 (wt.%). The yields of OLP increases with catalyst content while those of aqueous, gaseous and solid phase decreases. For all experiments, the density, kinematic viscosity, and acid value of OLP decreases with reaction time. The GC-MS of liquid reaction products identified the presence of hydrocarbons and oxygenates. In addition, the hydrocarbon content in OLP increases with reaction time, while those of oxygenates decrease, reaching concentrations of hydrocarbons up to 95.35% (area.). The best results for the physicochemical properties and the maximum hydrocarbon content in OLP were obtained at 450 °C and 1.0 atmosphere, using a catalyst fixed bed reactor, with 5.0% (wt.) red mud pellets activated with 1.0 M HCl as catalyst.
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11
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Allahkarami E, Azadmehr A, Noroozi F, Farrokhi S, Sillanpää M. Nitrate adsorption onto surface-modified red mud in batch and fixed-bed column systems: equilibrium, kinetic, and thermodynamic studies. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:48438-48452. [PMID: 35194713 DOI: 10.1007/s11356-022-19311-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 02/15/2022] [Indexed: 06/14/2023]
Abstract
This research aimed to develop a novel composite as a low-cost adsorbent for the removal of nitrate ion from aqueous solutions. The characterization of this composite (composition of red mud with dimethyldioctadecylammonium bromide (DDAB)) was performed by XRF, XRD, FTIR, and BET analyses. The most influential variables on nitrate adsorption, including contact time, solution acidity, adsorbent amount, and temperature were studied. The maximum amount of nitrate adsorbed onto the prepared adsorbent was obtained at pH 5.5 and contact time 30 min. The heterogeneous adsorption occurred during the uptake of nitrate. The results of kinetic study revealed that intra-particle diffusion was the major limitation for nitrate adsorption rate. The values of thermodynamic parameters illustrate the non-spontaneous, associative, and exothermic adsorption process. Increasing the temperature enhances the tendency of the process to non-spontaneously. Research on fixed-bed column has been done under different initial nitrate concentrations. The adsorption capacity of nitrate was increased with an increase in the initial concentration of nitrate. The results of column data were successfully explained using the Thomas and Yoon-Nelson models.
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Affiliation(s)
- Ebrahim Allahkarami
- Department of Mining Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Amirreza Azadmehr
- Department of Mining Engineering, Amirkabir University of Technology, Tehran, Iran.
| | | | - Shayan Farrokhi
- Department of Mining Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Mika Sillanpää
- Department of Chemical Engineering, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg, P. O. Box 17011, Doornfontein, 2028, South Africa
- Faculty of Science and Technology, School of Applied Physics, University Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
- Chemistry Department, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
- School of Chemistry, Shoolini University, Solan, Himachal Pradesh, 173229, India
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12
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Xu R, Lyu T, Wang L, Yuan Y, Zhang M, Cooper M, Mortimer RJG, Yang Q, Pan G. Utilization of coal fly ash waste for effective recapture of phosphorus from waters. CHEMOSPHERE 2022; 287:132431. [PMID: 34606900 DOI: 10.1016/j.chemosphere.2021.132431] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 09/26/2021] [Accepted: 09/30/2021] [Indexed: 06/13/2023]
Abstract
Reutilization of the waste by-products from industrial and agricultural activities is crucially important towards attainment of environmental sustainability and the 'circular economy'. In this study, we have developed and evaluated a sustainably-sourced adsorbent from coal fly ash, which was modified by a small amount of lanthanum (La-FA), for the recapture of phosphorous (P) from both synthetic and real natural waters. The prepared La-FA adsorbent possessed typical characteristic diffraction peaks similar to zeolite type Na-P1, and the BET surface area of La-FA was measured to be 10.9 times higher than that of the original FA. Investigation of P adsorption capability indicated that the maximum adsorption (10.8 mg P g-1) was 6.14 times higher than that (1.8 mg P g-1) of the original fly ash material. The ζ potentials measurement and P K-edge X-ray Absorption Near Edge Structure (XANES) spectra demonstrated that P was bonded on La-FA surfaces via an adsorption mechanism. After applying the proposed adsorbent to real lake water with La/P molar ratios in the range from 0.5:1 to 3:1, the La-FA adsorbent showed the highest phosphate removal ability with a La/P molar ratio 1:1, and the P adsorption was similar to that performance with the synthetic solution. Moreover, the La-FA absorbent produced a negligible effect on the concentrations of total dissolved nitrogen (TDN), NH4+-N and NO3--N in water. This study thus provides a potential material for effective P recapture and details of its operation.
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Affiliation(s)
- Rui Xu
- Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; National Joint Research Center for Yangtze River Conservation, Beijing, 100012, China
| | - Tao Lyu
- Cranfield Water Science Institute, Cranfield University, College Road, Cranfield, Bedfordshire, MK43 0AL, United Kingdom.
| | - Lijing Wang
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yuting Yuan
- UNSW Water Research Centre, School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Meiyi Zhang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Mick Cooper
- School of Animal, Rural and Environmental Sciences, Nottingham Trent University, Brackenhurst Campus, Nottinghamshire, NG25 0QF, United Kingdom
| | - Robert J G Mortimer
- School of Humanities, York St John University, Lord Mayor's Walk, York, YO31 7EX, United Kingdom; Nanjing Xianglai Academy of Eco-environmental Science and Technology, Nanjing, 210046, China
| | - Queping Yang
- Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; National Joint Research Center for Yangtze River Conservation, Beijing, 100012, China
| | - Gang Pan
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; School of Animal, Rural and Environmental Sciences, Nottingham Trent University, Brackenhurst Campus, Nottinghamshire, NG25 0QF, United Kingdom; Nanjing Xianglai Academy of Eco-environmental Science and Technology, Nanjing, 210046, China.
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13
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Luu TT, Dinh VP, Nguyen QH, Tran NQ, Nguyen DK, Ho TH, Nguyen VD, Tran DX, Kiet HAT. Pb(II) adsorption mechanism and capability from aqueous solution using red mud modified by chitosan. CHEMOSPHERE 2022; 287:132279. [PMID: 34563768 DOI: 10.1016/j.chemosphere.2021.132279] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Revised: 09/08/2021] [Accepted: 09/16/2021] [Indexed: 06/13/2023]
Abstract
Red mud modified by chitosan (RM/CS) was utilized as an adsorbent to effectively remove Pb(II) from aqueous solution. The surface area of RM/CS was found to significantly increase by more than 50% compared to that of original red mud. Different factors that affected the Pb(II) removal on this material, such as initial Pb(II) concentration, pH, and contact time, were investigated. The pseudo-first-order, pseudo-second-order, and intra-diffusion models were used to fit the experimental data to investigate the Pb(II)'s removal kinetics. The Pb(II) removal followed the intra-diffusion model. Additionally, the non-zero C value obtained from this model indicates that the removal was controlled by many different mechanisms. We also found that the interaction of Pb(II) and carbonate group on the material's surface played a primary role once the adsorption equilibrium was reached. Finally, the maximum adsorptive capacity was found to be about 209 mg/g. This obtained value is higher than those obtained for some other materials. Therefore, the present RM/CS should be a potential material for removing Pb(II) from aqueous solution.
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Affiliation(s)
- Thi-Thuy Luu
- Future Materials & Devices Laboratory, Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City, 700000, Viet Nam; Faculty of Natural Sciences, Duy Tan University, Da Nang, 550000, Viet Nam
| | - Van-Phuc Dinh
- Future Materials & Devices Laboratory, Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City, 700000, Viet Nam; Faculty of Natural Sciences, Duy Tan University, Da Nang, 550000, Viet Nam.
| | - Quang-Hung Nguyen
- Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City, 700000, Viet Nam; Faculty of Natural Sciences, Duy Tan University, Da Nang, 550000, Viet Nam.
| | - Ngoc-Quyen Tran
- Institute of Applied Materials Science, VAST, TL29, Thanh Loc Ward, Dist. 12, Ho Chi Minh City, 700000, Viet Nam; Graduate University of Science and Technology, VAST, TL29, Thanh Loc Ward, Dist. 12, Ho Chi Minh City, 700000, Viet Nam
| | - Duy-Khoi Nguyen
- Future Materials & Devices Laboratory, Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City, 700000, Viet Nam; Faculty of Natural Sciences, Duy Tan University, Da Nang, 550000, Viet Nam
| | - Thien-Hoang Ho
- Dong Nai University, 4 Le Quy Don Street, Dong Nai Province, Viet Nam
| | - Van-Dong Nguyen
- Faculty of Chemistry, University of Science, VNU-HCMC, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, 700000, Viet Nam; Vietnam National University Ho Chi Minh City, Ho Chi Minh City, Viet Nam
| | - Dong Xuan Tran
- Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City, 700000, Viet Nam; Faculty of Natural Sciences, Duy Tan University, Da Nang, 550000, Viet Nam
| | - H A Tuan Kiet
- Institute of Research and Development, Duy Tan University, Da Nang City, 550000, Viet Nam; Graduate School of Education, University of Pennsylvania, Philadelphia, PA, 19104, USA
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14
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Li H, Liu J, Zhang H, Harvey J. Investigation on the effect of fine solid wastes on the runoff purification performance of porous asphalt mixture. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 300:113612. [PMID: 34560469 DOI: 10.1016/j.jenvman.2021.113612] [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: 04/15/2021] [Revised: 08/09/2021] [Accepted: 08/23/2021] [Indexed: 06/13/2023]
Abstract
Fine solid wastes such as coal fly ash (CFA), diatomite, and red mud have been widely applied as alternative fillers for porous asphalt pavement (PAP), and have varying impacts on the mechanical performance of materials. However, whether they will affect the runoff purification performance of PAP has not been studied yet. Based on the laboratory simulation rainfall test, this study investigated the purification performance of porous asphalt mixture (PA) with three fine solid wastes fillers. Combined with the analysis of multi-scale pore characteristics of PA, the purification mechanism was further discussed. The results show that pollutants are mainly removed within 3 cm on the surface of PA in 20-30min rainfall. Diatomite and red mud fillers can effectively increase the removal rates of some heavy metals and nutrients by 20-40%. On the one hand, diatomite and red mud can leach some ions, which are conducive to physical adsorption and chemical degradation (including chemical precipitation and ion change) of pollutants. On the other hand, they also contain abundant porous structures and large specific surface areas, which significantly improve the micro-surface physical properties of PA and enhance the interaction between PA and pollutants.
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Affiliation(s)
- Hui Li
- Key Laboratory of Road and Traffic Engineering of the Ministry of Education, College of Transportation Engineering, Tongji University, 4800 Caoan Rd, Shanghai, 201804, China.
| | - Jiawen Liu
- Key Laboratory of Road and Traffic Engineering of the Ministry of Education, College of Transportation Engineering, Tongji University, 4800 Caoan Rd, Shanghai, 201804, China.
| | - Hengji Zhang
- Shanxi Yellow River Frontier Materials Research Institute Co., Ltd., Taiyuan, 030000, China.
| | - John Harvey
- University of California Pavement Research Center, Department of Civil and Environmental Engineering, University of California, Davis, USA.
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15
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Almeida ACM, do Nascimento RA, Amador ICB, Santos TCDS, Martelli MC, de Faria LJG, Ribeiro NFDP. Chemically activated red mud: assessing structural modifications and optimizing adsorption properties for hexavalent chromium. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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16
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Park JH, Wang JJ, Seo DC. Sorption characteristics of phosphate by bauxite residue in aqueous solution. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126465] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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17
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Wang M, Liu X. Applications of red mud as an environmental remediation material: A review. JOURNAL OF HAZARDOUS MATERIALS 2021; 408:124420. [PMID: 33191032 DOI: 10.1016/j.jhazmat.2020.124420] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 10/21/2020] [Accepted: 10/27/2020] [Indexed: 06/11/2023]
Abstract
Red mud is an alkaline by-product produced by alumina plants. The accumulation of red mud is becoming an increasingly serious problem with the growth of the aluminum industry. Various waste treatment methods utilizing red mud as an environmental remediation material have been developed. Red mud environmental remediation materials (RM-ERMs) are environmental remediation materials prepared by activating red mud, synergistically using red mud and other ingredients, or by extracting effective components from red mud. There are three general categories of use for RM-ERMs: for waste water purification, waste gas purification and soil remediation. As well as providing an opportunity to improve the environment through purification technologies, the highly alkaline red mud is consumed in the production of RM-ERMs. The use of RM-ERMs has been shown to be a promising strategy for the simultaneous treatment of various wastes. In this paper, the developregeneration characteristics of various red mud granularent status of RM-ERMs is described, the physical and chemical properties of red mud are introduced, and the active mechanism of RM-ERMs on target pollutants in waste water, waste gas and soil is summarized. Moreover, a discussion on the current existing problems of RM-ERMs provides important tips and suggestions for future research on RM-ERMs.
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Affiliation(s)
- Mengfan Wang
- School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Xiaoming Liu
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, 100083, China; School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
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18
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Talebi SS, Javid AB, Roudbari AA, Yousefi N, Ghadiri SK, Shams M, Mousavi Khaneghah A. Defluoridationof drinking water by metal impregnated multi-layer green graphene fabricated from trees pruning waste. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:18201-18215. [PMID: 33410018 DOI: 10.1007/s11356-020-11743-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 11/18/2020] [Indexed: 06/12/2023]
Abstract
A novel adsorbent with excellent adsorptive properties for fluoride was prepared through a green and cheap synthesis route. Populus caspica pruning wastes, a cheap agri-waste material, were reduced to multi-layer green graphene (MLG) and then post-modified to aluminum/iron modified multi-layer green graphene (AMLG and IMLG). Batch experiments revealed the effect of pH (3-11), contact time (0.5-12 h), and initial fluoride concentration (5-40 mg/L). The conversion of raw material to MLG increased the specific surface area about 120 times (from 4 to 475 m2/g). Furthermore, a significant improvement in zero points of charge (pHzpc) was attained for IMLG (7.1) and AMLG (8) compared with pristine MLG (4.3). Fluoride showed superior affinity to AMLG and IMLG compared with MLG. Fluoride removal increased gradually by pH from 3 to 8 and then decreased sharply up to pH 11. The study of process dynamics demonstrated the monolayer fluoride adsorption onto AMLG and IMLG controlled by the chemisorptions. The highest predicted adsorption capacities based on the Langmuir model were 31.52, 47.01, and 53.76 mg/g for MLG, IMLG, and AMLG, respectively. Considering economic and technical feasibility presents AMLG and IMLG as a promising candidate against water contamination by elevated fluoride. Graphical abstract.
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Affiliation(s)
- Seyedeh Solmaz Talebi
- Department of Epidemiology, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Allaah Bakhsh Javid
- Department of Environmental Health Engineering, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran
- The environmental and occupational health research center, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Ali Akbar Roudbari
- Department of Environmental Health Engineering, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran
- The environmental and occupational health research center, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Nader Yousefi
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Seid Kamal Ghadiri
- Department of Environmental Health Engineering, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran.
- The environmental and occupational health research center, Shahroud University of Medical Sciences, Shahroud, Iran.
| | - Mahmoud Shams
- Social Determinants of Health Research Center, Mashhad University of Medical Sciences, P.O. Box: 91735-951, Mashhad, Iran.
| | - Amin Mousavi Khaneghah
- Department of Food Science, Faculty of Food Engineering, State University of Campinas (UNICAMP), Campinas, São Paulo, 13083-862, Brazil.
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19
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Phosphorus Removal from Wastewater: The Potential Use of Biochar and the Key Controlling Factors. WATER 2021. [DOI: 10.3390/w13040517] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
In recent years, a large volume of literature has been published regarding the removal of phosphorus (P) from wastewater. Various sorbing materials, such as metal oxides and hydroxides, carbonates and hydroxides of calcium (Ca) and magnesium (Mg), hydrotalcite, activated carbon, anion exchange resins, industrial solid wastes and organic solid wastes, have been suggested for P removal. Many of these sorbents are expensive and/or may cause some environmental problems. In contrast, biochar, as an economical and environmentally friendly sorbing material, has received much attention in recent years and has been used as a novel sorbent for the removal of different organic and inorganic pollutants. Biochar is a type of sustainable carbonaceous material that is produced from the thermal treatment of agricultural organic residues and other organic waste streams under oxygen free conditions. This paper reviews the potential use of biochar and the key controlling factors affecting P removal from wastewater. The ability of biochar to remove P from wastewater depends on its physical and chemical properties. Some of the most important physicochemical properties of biochar (structural characteristics, electrical conductivity (EC), mineral composition, pH, zeta potential, cation exchange capacity (CEC) and anion exchange capacity (AEC)) are affected by the feedstock type as well as temperature of pyrolysis and the P sorption capacity is highly dependent on these properties. The P removal is also affected by the water matrix chemistry, such as the presence of competing ions and bulk pH conditions. Finally, several recommendations for future research have been proposed to facilitate and enhance the environmental efficiency of biochar application.
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20
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The Use of Constructed Wetland for Mitigating Nitrogen and Phosphorus from Agricultural Runoff: A Review. WATER 2021. [DOI: 10.3390/w13040476] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The loss of nitrogen and phosphate fertilizers in agricultural runoff is a global environmental problem, attracting worldwide attention. In the last decades, the constructed wetland has been increasingly used for mitigating the loss of nitrogen and phosphate from agricultural runoff, while the substrate, plants, and wetland structure design remain far from clearly understood. In this paper, the optimum substrates and plant species were identified by reviewing their treatment capacity from the related studies. Specifically, the top three suitable substrates are gravel, zeolite, and slag. In terms of the plant species, emergent plants are the most widely used in the constructed wetlands. Eleocharis dulcis, Typha orientalis, and Scirpus validus are the top three optimum emergent plant species. Submerged plants (Hydrilla verticillata, Ceratophyllum demersum, and Vallisneria natans), free-floating plants (Eichhornia crassipes and Lemna minor), and floating-leaved plants (Nymphaea tetragona and Trapa bispinosa) are also promoted. Moreover, the site selection methods for constructed wetland were put forward. Because the existing research results have not reached an agreement on the controversial issue, more studies are still needed to draw a clear conclusion of effective structure design of constructed wetlands. This review has provided some recommendations for substrate, plant species, and site selections for the constructed wetlands to reduce nutrients from agricultural runoff.
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21
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Abu-Jdayil B, Adi M, Al Ghaferi F, Al Yahyaee S, Al Jabri M. Physical and thermal insulation properties of the composites based on seawater-neutralised bauxite residue. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123723. [PMID: 33264897 DOI: 10.1016/j.jhazmat.2020.123723] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 07/20/2020] [Accepted: 08/13/2020] [Indexed: 05/27/2023]
Abstract
The objective of this study is to evaluate the possibility of using bauxite residue (BR), which is a highly hazardous waste, as a filler in thermoset polymer matrices for applications in insulating construction materials to minimise heat loss in buildings. Unsaturated polyester resin (UPR) blended with the seawater-neutralised BR in a ratio of 0-60 vol.% was transformed into a solid via a crosslinking process at room temperature. The pristine polyester and BR-UPR composites were characterised to ascertain their structural, physical and thermal properties. The results indicate that BR is a good filler that can be used with UPR to develop thermal insulation/construction materials. The UPR composite containing 40 vol.% BR is considered to be the optimum mixture with respect to the tested physical and thermal properties because it utilises a large amount of filler and shows promising thermal insulation characteristics with a thermal conductivity of 0.096 W/(m∙K), a thermal diffusivity of 0.161 mm2/s, a 24-h water retention of 0.15 % and a bulk density of 1484 kg/m3. Furthermore, the thermal stability of the prepared composites is positively influenced by the incorporation of BR. The overall weight loss upon heating to 900 °C decreased from 99.85 % (pristine polyester) to 46.68 % (60 vol.% BR composite).
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Affiliation(s)
- Basim Abu-Jdayil
- Chemical & Petroleum Engineering Department, UAE University, P.O. Box 15551, Al Ain, United Arab Emirates.
| | - Maissa Adi
- Chemical & Petroleum Engineering Department, UAE University, P.O. Box 15551, Al Ain, United Arab Emirates
| | - Fatima Al Ghaferi
- Chemical & Petroleum Engineering Department, UAE University, P.O. Box 15551, Al Ain, United Arab Emirates
| | - Sara Al Yahyaee
- Chemical & Petroleum Engineering Department, UAE University, P.O. Box 15551, Al Ain, United Arab Emirates
| | - Maryam Al Jabri
- Chemical & Petroleum Engineering Department, UAE University, P.O. Box 15551, Al Ain, United Arab Emirates
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22
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Tirpak RA, Afrooz AN, Winston RJ, Valenca R, Schiff K, Mohanty SK. Conventional and amended bioretention soil media for targeted pollutant treatment: A critical review to guide the state of the practice. WATER RESEARCH 2021; 189:116648. [PMID: 33227609 DOI: 10.1016/j.watres.2020.116648] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 10/15/2020] [Accepted: 11/15/2020] [Indexed: 06/11/2023]
Abstract
Bioretention systems are widely used green infrastructure elements that utilize engineered bioretention soil media (BSM) for stormwater capture and treatment. Conventional bioretention soil media, which typically consists of sand, sandy loam, loamy sand or topsoil amended with compost, has limited capacity to remove and may leach some stormwater pollutants. Alternative engineered amendments, both organic and inorganic, have been tested to supplement BSM. Yet, municipalities and regulatory agencies have been slow to adopt these alternative amendments into their design specifications, partly because of a lack of clear guidance on how to select the right amendment to treat a target stormwater contaminant under highly variable climatic conditions. This article aims to provide that guidance by: (1) summarizing the current design BSM specifications adopted by jurisdictions worldwide, (2) comparing the performance of conventional and amended BSM, (3) highlighting advantages and limitations of BSM amendments, and (4) identifying challenges for implementing amendments in field conditions. The analysis not only informs the research community of the barriers faced by stormwater managers in implementing BSM amendments but also provides guidelines for their adoption by interested agencies to comply with existing regulations and meet design needs. This feedback loop could catalyze further innovation in the development of sustainable stormwater treatment technologies.
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Affiliation(s)
- R Andrew Tirpak
- Department of Food, Agricultural, and Biological Engineering, The Ohio State University. 590 Woody Hayes Drive, Columbus, OH, 43210, USA
| | - Arm Nabiul Afrooz
- California State Water Resources Control Board, 1001 I Street, Sacramento, CA, 95833, USA
| | - Ryan J Winston
- Department of Food, Agricultural, and Biological Engineering, The Ohio State University. 590 Woody Hayes Drive, Columbus, OH, 43210, USA; Deptartment of Civil, Environmental, and Geodetic Engineering, The Ohio State University, 2070 Neil Ave., Columbus, OH, 43210, USA.
| | - Renan Valenca
- Department of Civil and Environmental Engineering, University of California, Los Angeles, 420 Westwood Plaza, Los Angeles, CA, 90095, USA
| | - Ken Schiff
- Southern California Coastal Water Research Project, Costa Mesa, CA, 92626
| | - Sanjay K Mohanty
- Department of Civil and Environmental Engineering, University of California, Los Angeles, 420 Westwood Plaza, Los Angeles, CA, 90095, USA
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23
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Bao T, Yu ZM, Damtie MM, Wu K, Jin J, Zhang Y, Wei XL, Frost RL. Use of autoclaved aerated concrete particles for simultaneous removal of nitrogen and phosphorus as filter media from domestic wastewater. ENVIRONMENTAL TECHNOLOGY 2020; 41:3032-3042. [PMID: 30888252 DOI: 10.1080/09593330.2019.1595742] [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: 09/23/2018] [Accepted: 03/10/2019] [Indexed: 06/09/2023]
Abstract
ABSTRACT In this study, autoclaved aerated concrete particles (AACPs) from construction waste were used to simultaneously remove phosphorus and nitrogen in biological aerated filters (BAFs). The effects of air/water (A/W) ratio on the removal performance of phosphorus (PO4 3-), total organic carbon, total nitrogen (TN), and ammonia nitrogen were investigated. Results showed that AACP BAF was more efficient than commercially available ceramsite (CAC) BAF. For example, the removal rates of TN with AACP and CAC were 45.96% and 15.64%, respectively, and those of PO4 3- with AACP and CAC were 72.45% and 33.97%, respectively, at the A/W ratio of 3:1. Different characterization methods were utilized to evaluate the surface shape, elemental compostion, and internal and surface structure of AACP. The interconnectivity and uniformity of pores and the rough surface of AACP were found to be suitable for the growth of microbial biofilm. In addition, the growth of internal pores in AACP promoted the removal of phosphorus and nitrogen. The surface of used AACP contained a small amount of irregular crystals and was covered with a layer of aggregates, which were characterized as hydroxyapatite [HAP, Ca5(OH)(PO4)3]. The formation of HAP as a final byproduct confirmed the successful removal of phosphorus. Therefore, construction wastes, such as AACPs, could be recycled and utilized as a promising biofilter media for excellent wastewater treatment.
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Affiliation(s)
- Teng Bao
- Department of Biological and Environmental Engineering, Hefei University, Hefei, People's Republic of China
- Nanotechnology and Molecular Science Discipline, Faculty of Science and Engineering, Queensland University of Technology (QUT), Brisbane, Australia
- Institute of Environmental Engineering, Hefei University, Hefei, People's Republic of China
| | - Zhi Ming Yu
- Department of Biological and Environmental Engineering, Hefei University, Hefei, People's Republic of China
- Institute of Environmental Engineering, Hefei University, Hefei, People's Republic of China
| | - Mekdimu Mezemir Damtie
- Department of Construction Environment Engineering, University of Science & Technology (UST), Daejeon, South Korea
| | - Ke Wu
- Department of Biological and Environmental Engineering, Hefei University, Hefei, People's Republic of China
- Institute of Environmental Engineering, Hefei University, Hefei, People's Republic of China
| | - Jie Jin
- Department of Biological and Environmental Engineering, Hefei University, Hefei, People's Republic of China
- Institute of Environmental Engineering, Hefei University, Hefei, People's Republic of China
| | - Yong Zhang
- Department of Biological and Environmental Engineering, Hefei University, Hefei, People's Republic of China
- Institute of Environmental Engineering, Hefei University, Hefei, People's Republic of China
| | - Xing Lai Wei
- Department of Biological and Environmental Engineering, Hefei University, Hefei, People's Republic of China
- Institute of Environmental Engineering, Hefei University, Hefei, People's Republic of China
| | - Ray L Frost
- Nanotechnology and Molecular Science Discipline, Faculty of Science and Engineering, Queensland University of Technology (QUT), Brisbane, Australia
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Gubernat S, Masłoń A, Czarnota J, Koszelnik P. Reactive Materials in the Removal of Phosphorus Compounds from Wastewater-A Review. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E3377. [PMID: 32751535 PMCID: PMC7435924 DOI: 10.3390/ma13153377] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 07/27/2020] [Accepted: 07/28/2020] [Indexed: 01/22/2023]
Abstract
Modern technologies designed to treat wastewater containing phosphorus compounds are based on the processes of adsorption and precipitation. In addition, more environmentally friendly and cheaper materials are being sought to ensure greater conformity with overarching assumptions of green chemistry and sustainable development. Against that background, this paper offers a review and analysis of available information on the considered reactive materials that have the capacity to remove phosphorus from wastewater. These materials are categorised as natural (with a sub-division in line with the dominant sorption groups of Al/Fe or Ca/Mg), waste, or man-made. Notably, most studies on sorbents have been carried out in laboratory systems via experimentation under static conditions. Among the natural materials, opoka has the highest sorption capacity of 181.20 g P/kg, while red mud (in the waste material category) is most efficient at binding phosphorus with a level of 345.02 g P/kg. Finally, among the group of commercial materials, Rockfos® has the highest sorption capacity of 256.40 g P/kg. In addition, this paper recognises the effect of composition, pH, and physical properties on a reactive material's capacity to absorb phosphorus, as well as the possibility for further potential use in the production of fertilisers.
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Affiliation(s)
- Sylwia Gubernat
- Doctoral School of Engineering and Technical Sciences, Rzeszow University of Technology, Powstańców Warszawy 6, 35-959 Rzeszów, Poland;
- Inżynieria Rzeszów S.A., ul. Podkarpacka 59a, 35-082 Rzeszów, Poland
| | - Adam Masłoń
- Department of Environmental Engineering and Chemistry, Rzeszow University of Technology, Powstańców Warszawy 6, 35-959 Rzeszów, Poland; (J.C.); (P.K.)
| | - Joanna Czarnota
- Department of Environmental Engineering and Chemistry, Rzeszow University of Technology, Powstańców Warszawy 6, 35-959 Rzeszów, Poland; (J.C.); (P.K.)
| | - Piotr Koszelnik
- Department of Environmental Engineering and Chemistry, Rzeszow University of Technology, Powstańców Warszawy 6, 35-959 Rzeszów, Poland; (J.C.); (P.K.)
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Grela A, Łach M, Mikuła J. An Efficacy Assessment of Phosphate Removal from Drainage Waters by Modified Reactive Material. MATERIALS 2020; 13:ma13051190. [PMID: 32155873 PMCID: PMC7085026 DOI: 10.3390/ma13051190] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 02/21/2020] [Accepted: 03/04/2020] [Indexed: 11/16/2022]
Abstract
Phosphates may pose a threat to the aquatic ecosystem when there is a connection or a path between the soil and the aquatic ecosystem. Runoff and drainage ditches connect arable land with the waters of the receiver. Phosphates in the runoff and the ditches contribute to the negative phenomenon of surface water eutrophication. In order to prevent it, certain reactive materials are used which are capable of the selective removal of compounds by way of sorption or precipitation. Zeolites can be distinguished among the many reactive materials. Within the present analysis, the modification of a reactive material containing zeolites was carried out using calcium hydroxide solutions of different concentrations. A certain concentration of calcium hydroxide was created for use in further studies. In order to characterise the new material, an analysis was done of the chemical and mineral composition, as well as the porous texture and morphology. The efficacy of phosphate removal for its typical concentrations in drainage waters in Poland was confirmed by way of an experiment. Using a modified reactive material as an element of landscape structures may reduce the negative impact of phosphates on the quality of surface water.
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Affiliation(s)
- Agnieszka Grela
- Faculty of Environmental and Power Engineering, Cracow University of Technology, 31-155 Kraków, Poland
- Correspondence: ; Tel.: +48-126283133
| | - Michał Łach
- Faculty of Materials Engineering and Physics, Cracow University of Technology, Warszawska 24, 31-155 Kraków, Poland; (M.Ł.); (J.M.)
| | - Janusz Mikuła
- Faculty of Materials Engineering and Physics, Cracow University of Technology, Warszawska 24, 31-155 Kraków, Poland; (M.Ł.); (J.M.)
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Yang T, Wang Y, Sheng L, He C, Sun W, He Q. Enhancing Cd(II) sorption by red mud with heat treatment: Performance and mechanisms of sorption. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 255:109866. [PMID: 31759202 DOI: 10.1016/j.jenvman.2019.109866] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 10/26/2019] [Accepted: 11/12/2019] [Indexed: 06/10/2023]
Abstract
Red mud is a waste generated from the aluminum industry in large quantities. The potential of red mud as a sorbent for beneficial reuse has been the focus of research efforts. However, the limited sorption capacity of red mud has hindered its applications in the removal of environmental pollutants. In this study, the feasibility of heat treatment in improving the sorption of toxic Cd(II) by red mud was investigated in the temperature range of 200-900 °C. Heat treatment at 500 °C resulted in the highest sorption capacity (42.64 mg g-1) and the fastest sorption rate. Further analyses revealed that heat treatment at 500 °C led to significant increases in specific surface area (32.77 m2 g-1), which likely contributed to the enhanced Cd(II) sorption performance. Notably, heat treatment at 500 °C nearly doubled Cd(II) sorption stability as compared with that of raw red mud, as demonstrated by leaching experiments with simulated rainwater. Sequential extraction and XPS analyses indicated that specific sorption was the predominant mechanism involved in Cd(II) removal by red mud heat-treated at 500 °C (RM500). The strength of specific sorption following heat treatment likely contributed to the increase in sorption stability due to the formation of inner-sphere complex (-OCdOH). Metal-metal ion exchange was identified as another sorption mechanism, which, however, likely had only a limited effect on Cd(II) sorption performance. As the final pH (6.57) of the sorption system was typically lower than the pHPZC (about 10.6) of RM500, positive charges would develop on the red mud surface and impede the retention of Cd(II) cations, resulting in weak electrostatic attraction between Cd(II) cations and red mud. In summary, heat treatment at 500 °C considerably enhanced the capacity, rate and stability of Cd(II) sorption by red mud, suggesting red mud could be optimized by heat treatment as a more effective sorbent for Cd(II) removal. These findings represent the first mechanistic characterization of Cd(II) sorption by heat-treated red mud, providing much needed insights into the potential strategies to enhance the effectiveness of red mud in the sorptive removal of toxic heavy metals.
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Affiliation(s)
- Tianxue Yang
- Key Laboratory for Vegetation Ecology, Ministry of Education, Institute of Grassland Science, Northeast Normal University, Changchun, Jilin, China; State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, Jilin, China; Department of Civil and Environmental Engineering, University of Tennessee, Knoxville, TN, USA
| | - Yongfeng Wang
- Department of Civil and Environmental Engineering, University of Tennessee, Knoxville, TN, USA
| | - Lianxi Sheng
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, Jilin, China.
| | - Chunguang He
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, Jilin, China
| | - Wei Sun
- Key Laboratory for Vegetation Ecology, Ministry of Education, Institute of Grassland Science, Northeast Normal University, Changchun, Jilin, China.
| | - Qiang He
- Department of Civil and Environmental Engineering, University of Tennessee, Knoxville, TN, USA; Institute for a Secure and Sustainable Environment, University of Tennessee, Knoxville, TN, USA.
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27
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Makita Y, Sonoda A, Sugiura Y, Ogata A, Suh C, Lee JH, Ooi K. Preparation and phosphate adsorptive properties of metal oxide-loaded granular activated carbon and pumice stone. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.123881] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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28
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Zhang S, Zhang C, Wang Q, Ahn WS. Co- and Mn-Coimpregnated ZSM-5 Prepared from Recycled Industrial Solid Wastes for Low-Temperature NH3-SCR. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b04383] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Siqian Zhang
- Department of Chemistry and Chemical Engineering, Inha University, Incheon 402-751, Republic of Korea
| | - Cheng Zhang
- College of Environmental Science and Engineering, Beijing Forestry University, 35 Qinghua East Road, Haidian
District, Beijing 100083, P. R. China
| | - Qiang Wang
- College of Environmental Science and Engineering, Beijing Forestry University, 35 Qinghua East Road, Haidian
District, Beijing 100083, P. R. China
| | - Wha-Seung Ahn
- Department of Chemistry and Chemical Engineering, Inha University, Incheon 402-751, Republic of Korea
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29
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Mechanistic Study of Phosphorus Adsorption onto Iron Z-A: Spectroscopic and Experimental Approach. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9224897] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Iron was incorporated into an LTA type zeolite using the sol-gel hydrothermal method to form Iron-zeolite-A (Iron-Z-A), and its phosphate adsorption-desorption efficiency were analyzed. Samples were characterized by EDS, SEM, XRD, EPR, FT-IR XPS, and Raman to ensure the apt synthesis of Iron-Z-A and to interpret the mechanism of adsorption-desorption of PO43− in an aqueous solution. EPR and XPS analysis confirmed that the iron was doped as Fe3+ in the LTA structure. The XPS peak shift (Fe-2p), FT-IR band shift, and intensity change (–OH) confirmed the existence of the ligand exchange mechanism. In the adsorption phase at pH 5, the derivative of phosphate (H2PO4−) acts as a ligand and interacts with OH of Fe on the zeolite surface to form “Iron-zeolite (oxy) hydroxide bound phosphate”. In the desorption phase at pH 10, phosphate ligand is detached and get mixed in the aqueous phase as HPO42−. The EDS data, Si–O–Al band shift and intensity change in FT-IR and XPS peak intensity change proved the contribution of Al in the process of adsorption. The data of adsorption fitted well with the Langmuir’s isotherm and pseudo-second-order kinetic model. The amount of PO43− adsorbed was a function of adsorbent’s surface area regardless of concentration. The amount of PO43− being adsorbed by the metal ions was found to be 382.296 mg PO43−/g Fe and 56.296 mg PO43−/g Al.
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Torit J, Phihusut D. Phosphorus removal from wastewater using eggshell ash. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:34101-34109. [PMID: 30276697 DOI: 10.1007/s11356-018-3305-3] [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: 04/30/2018] [Accepted: 09/20/2018] [Indexed: 06/08/2023]
Abstract
Eggshell ash was used as an adsorbent to remove phosphorus from wastewater. Adsorbent dose, initial phosphorus concentration, and contact time were investigated to determine the optimum conditions. Results indicate that 5 g of eggshell ash adsorbent with 1.5 mg L-1 of initial phosphorus concentration removed over 90% of the phosphorus. When the temperature was increased, phosphorus removal potential also increased. Specific surface area, morphological features, and structure of the adsorbent were characterized by Brunauer-Emmett-Teller (BET) surface area analysis, scanning electron microscopy with energy dispersive X-ray spectrometer (SEM-EDS), and X-ray diffraction (XRD). Results showed prominent calcium, magnesium, and phosphorus in the eggshell ash surface after adsorption. The elemental composition of eggshell ash surfaces before adsorption did not contain phosphorus, revealing that calcium carbonate-based eggshell ash was co-precipitated with calcium phosphate. The adsorption mechanism was studied by applying Langmuir and Freundlich isotherm models. Experimental data fit well with the Langmuir model, which indicates monolayer adsorption. Eggshell ash was also applied as an adsorbent in wastewater at Srinakharinwirot University dormitories, resulting in 80% phosphorus removal within 2 h. These findings indicated that eggshell ash could be applied as an adsorbent for phosphorus treatment and removal from domestic and industrial wastewater.
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Affiliation(s)
- Jirawan Torit
- Department of Public Health, Faculty of Physical Education, Srinakharinwirot University, Bangkok, Thailand.
| | - Doungkamon Phihusut
- Environmental Research Institute, Chulalongkorn University, Bangkok, Thailand
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31
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Younes H, Mahanna H, El-Etriby HK. Fast adsorption of phosphate (PO 4
-) from wastewater using glauconite. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2019; 80:1643-1653. [PMID: 32039896 DOI: 10.2166/wst.2019.410] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this study, the removal of phosphate (PO4 -) from wastewater using glauconite was investigated. Glauconite was characterized by N2 adsorption-desorption isotherm, scanning electron microscopy (SEM), energy-dispersive X-ray (EDX) analysis, and Fourier transform infrared (FTIR) spectroscopy. The effects of contact time, pH, initial phosphate concentrations, adsorbent dose, and temperature were investigated by batch experiments. The isotherms, kinetics and thermodynamics for phosphate removal were studied. The results showed that glauconite had a rough surface and abundant pores. The determined Brunauer-Emmett-Teller (BET) surface area was 55 m2/g with a pore radius of 1.99 nm and the pore volume was 0.032 cm3/g. FTIR analysis revealed that the abundance of various functional groups on the surface of glauconite may play an important role for the adsorption process. The optimum pH was 11 with complete removal of phosphate in a short time (nearly 1 min). The experimental data fitted very well with the Langmuir isotherm (R2 = 0.999) with a maximum adsorption capacity of 32.26 mg/g at 50 °C. Adsorption kinetic data were best fitted with the pseudo-second-order kinetic model (R2 = 0.999). Thermodynamic study confirmed the spontaneous, endothermic and irreversible adsorption process. Therefore, glauconite is a promising natural low-cost adsorbent for phosphate removal from wastewater.
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Affiliation(s)
- Hassan Younes
- Department of Public Works Engineering, Faculty of Engineering, Mansoura University, Mansoura, 35516, Egypt E-mail:
| | - Hani Mahanna
- Department of Public Works Engineering, Faculty of Engineering, Mansoura University, Mansoura, 35516, Egypt E-mail:
| | - Hisham Kh El-Etriby
- Department of Public Works Engineering, Faculty of Engineering, Mansoura University, Mansoura, 35516, Egypt E-mail:
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32
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Taneez M, Hurel C. A review on the potential uses of red mud as amendment for pollution control in environmental media. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:22106-22125. [PMID: 31187380 DOI: 10.1007/s11356-019-05576-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 05/24/2019] [Indexed: 06/09/2023]
Abstract
Red mud is a solid waste of bauxite processing by Bayer process which involves caustic digestion of Al-containing mineral for alumina production. The global inventory of red mud waste reached an estimated amount of 4 billion tons in 2015, increasing at an approximate rate of 120 million tons per year. Therefore, its management is becoming a global environmental issue for the protection of environment, and the need for awareness in this regard is becoming crucial. Although red mud is not considered as a hazardous material in many countries, its high alkalinity and fine particle size may pose significant environmental threat, and it is found to be an interesting material for environmental remediation purposes due to rich iron content. This paper provides a review of possible remedial applications of red mud in various environmental compartments. Modification of red mud creates novel opportunities for cost-effective and efficient removal of metal ions, inorganic anions, dyes, and phenols from wastewater and acid mine drainage. Re-vegetation of red mud disposal sites, treatment of metal-contaminated acidic soils presents the usefulness of this material but less research has been done so far to investigate its use in the stabilization of polluted sediments. On the other hand, leaching and eco-toxicological tests have also revealed that red mud does not pose high toxicity to the environment making it suitable for the treatment of contaminated media. Nevertheless, neutralization of red mud is recommended for its safe disposal and secure application in any environmental media.
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Affiliation(s)
- Mehwish Taneez
- Sulaiman Bin Abdullah Aba Al-Khail -Centre for Interdisciplinary Research in Basic Science (SA-CIRBS), International Islamic University, Sector H-10, Islamabad, 44000, Pakistan.
- Ecosystèmes Côtiers Marins et Réponses aux Stress (ECOMERS), CNRS, Université de Nice Sophia Antipolis, 06108, Nice, France.
| | - Charlotte Hurel
- Université de Nice Sophia Antipolis, UMR, CNRS 7010, 06108, Nice, France
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33
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Li C, Yu Y, Li Q, Zhong H, Wang S. Kinetics and equilibrium studies of phosphate removal from aqueous solution by calcium silicate hydrate synthesized from electrolytic manganese residue. ADSORPT SCI TECHNOL 2019. [DOI: 10.1177/0263617419860620] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Affiliation(s)
- Changxin Li
- College of Safety Science and Engineering, Nanjing Tech University, China
| | - Yuan Yu
- College of Safety Science and Engineering, Nanjing Tech University, China
| | - Qiuyue Li
- College of Safety Science and Engineering, Nanjing Tech University, China
| | - Hong Zhong
- College of Chemistry and Chemical Engineering, Central South University, China
| | - Shuai Wang
- Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources, China
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34
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Sun C, Chen J, Tian K, Peng D, Liao X, Wu X. Geochemical Characteristics and Toxic Elements in Alumina Refining Wastes and Leachates from Management Facilities. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16071297. [PMID: 30978989 PMCID: PMC6480639 DOI: 10.3390/ijerph16071297] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 04/01/2019] [Accepted: 04/04/2019] [Indexed: 11/16/2022]
Abstract
A nationwide investigation was carried out to evaluate the geochemical characteristics and environmental impacts of red mud and leachates from the major alumina plants in China. The chemical and mineralogical compositions of red mud were investigated, and major, minor, and trace elements in the leachates were analyzed. The mineral and chemical compositions of red mud vary over refining processes (i.e., Bayer, sintering, and combined methods) and parental bauxites. The main minerals in the red mud are quartz, calcite, dolomite, hematite, hibschite, sodalite, anhydrite, cancrinite, and gibbsite. The major chemical compositions of red mud are Al, Fe, Si, Ca, Ti, and hydroxides. The associated red mud leachate is hyperalkaline (pH > 12), which can be toxic to aquatic life. The concentrations of Al, Cl-, F-, Na, NO₃2-, and SO₄2- in the leachate exceed the recommended groundwater quality standard of China by up to 6637 times. These ions are likely to increase the salinization of the soil and groundwater. The minor elements in red mud leachate include As, B, Ba, Cr, Cu, Fe, Ni, Mn, Mo, Ti, V, and Zn, and the trace elements in red mud leachate include Ag, Be, Cd, Co, Hg, Li, Pb, Sb, Se, Sr, and Tl. Some of these elements have the concentration up to 272 times higher than those of the groundwater quality standard and are toxic to the environment and human health. Therefore, scientific guidance is needed for red mud management, especially for the design of the containment system of the facilities.
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Affiliation(s)
- Chunwei Sun
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, Sichuan Province 611756, China.
| | - Jiannan Chen
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, Sichuan Province 611756, China.
- State-Province Joint Engineering Research Lab in Spatial Information Technology for High Speed Railway Operation Safety, Southwest Jiaotong University, Chengdu, Sichuan Province 611756, China.
| | - Kuo Tian
- Department of Civil, Environmental, and Infrastructure Engineering, George Mason University, Fairfax, VA 22030, USA.
| | - Daoping Peng
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, Sichuan Province 611756, China.
| | - Xin Liao
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, Sichuan Province 611756, China.
| | - Xiyong Wu
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, Sichuan Province 611756, China.
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35
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A Review of Fouling Mechanisms, Control Strategies and Real-Time Fouling Monitoring Techniques in Forward Osmosis. WATER 2019. [DOI: 10.3390/w11040695] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Forward osmosis has gained tremendous attention in the field of desalination and wastewater treatment. However, membrane fouling is an inevitable issue. Membrane fouling leads to flux decline, can cause operational problems and can result in negative consequences that can damage the membrane. Hereby, we attempt to review the different types of fouling in forward osmosis, cleaning and control strategies for fouling mitigation, and the impact of membrane hydrophilicity, charge and morphology on fouling. The fundamentals of biofouling, organic, colloidal and inorganic fouling are discussed with a focus on recent studies. We also review some of the in-situ real-time online fouling monitoring technologies for real-time fouling monitoring that can be applicable to future research on forward osmosis fouling studies. A brief discussion on critical flux and the coupled effects of fouling and concentration polarization is also provided.
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36
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Jin H, Liu Y, Wang C, Lei X, Guo M, Cheng F, Zhang M. Two-step modification towards enhancing the adsorption capacity of fly ash for both inorganic Cu(II) and organic methylene blue from aqueous solution. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:36449-36461. [PMID: 30374711 DOI: 10.1007/s11356-018-3585-7] [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: 07/19/2018] [Accepted: 10/23/2018] [Indexed: 06/08/2023]
Abstract
A new adsorption material from fly ash (FA) was prepared by a two-step surface modification process, which showed higher ability for the removal of both inorganic and organic cationic pollutants from aqueous solution, i.e., Cu2+ and methylene blue (MB). Firstly, FA was modified by hydrothermal method in alkaline solution at 80 °C (FA80) to have a larger BET surface area. Afterwards, FA80 was further modified by sodium dodecyl benzene sulfonate (SDBS), of which a layer of anionic functional groups were grafted on the surface. The adsorption performance of SDBS@FA80 for removal of Cu2+ and MB were detailedly investigated. The results showed that SDBS@FA80 presented the optimal adsorption capacity at pH 7.0. Additionally, the maximum adsorption capacities of SDBS@FA80 for the removal Cu2+ and MB were up to 227.3 and 50.76 mg g-1 at 70 °C, respectively, as well as being about three times higher than that of FA. When the initial concentrations of Cu2+ and MB were lower than those of 20 and 10 ppm, their removal efficiencies were as high as 99.75 and 96.4%, respectively. The pseudo-second-order model was well applied to describe the adsorption kinetics, indicating that chemisorption was taking place. Furthermore, a plausible mechanism is proposed by XPS studies, where the high adsorption capacity is mainly contributed to the electrostatic attraction and π-π stacking interaction between the cationic Cu2+/MB and anionic functional groups of SDBS. Due to the low-cost and high adsorption capacity, SDBS@FA80 is regarded as a promising adsorbent for the removal of cationic pollutants.
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Affiliation(s)
- Hongqiang Jin
- School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, People's Republic of China
| | - Yang Liu
- School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, People's Republic of China
| | - Chunyang Wang
- School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, People's Republic of China
| | - Xunhui Lei
- School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, People's Republic of China
| | - Min Guo
- School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, People's Republic of China
| | - Fangqin Cheng
- Shanxi Collaborative Innovation Center of High Value-added Utilization of Coal-related Wastes in Shanxi University, Taiyuan, 030006, China
| | - Mei Zhang
- School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, People's Republic of China.
- Shanxi Collaborative Innovation Center of High Value-added Utilization of Coal-related Wastes in Shanxi University, Taiyuan, 030006, China.
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37
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Yang M, Ren B, Qiao L, Ren B, Hu Y, Zhao R, Ren Z, Du J. Behavior responses of zebrafish (Danio rerio) to aquatic environmental stresses in the characteristic of circadian rhythms. CHEMOSPHERE 2018; 210:129-138. [PMID: 29986218 DOI: 10.1016/j.chemosphere.2018.07.018] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 07/03/2018] [Accepted: 07/03/2018] [Indexed: 06/08/2023]
Abstract
As behavior shows a distinct circadian rhythm, it is hypothesized that circadian rhythms based on zebrafish (Danio rerio) behavior responses could be affected by contaminants in this study, and then the behavior strength of zebrafish exposed to 0.005 mg/L Cadmium chloride (CdCl2), 0.01 mg/L Dibasic Sodium Phosphate (Na2HPO4), 0.002 mg/L deltamethrin, and 0.003 mg/L atrazine for 6 days is used to illustrate the possibility of behavior circadian rhythms as an indicator in the environmental stress assessment. Statistical analysis with p < 0.01 shows that a clear difference between average values of BS during dark period (AVD) and those during light period (AVL) could be observed, and 24 h circadian rhythms do exist in zebrafish behavior responses. Both BS values and circadian rhythms of zebrafish can be affected in the aspect of periodicity with clear time delay, which were 1 h delay in CdCl2, 4 h delay in Na2HPO4, 4 h delay in deltamethrin, and 1 h delay in atrazine. Behavior circadian rhythms were disturbed according to the repetitive cycles after autocorrelation analysis, and the toxic effects of different chemicals could be reflected by the profiles of the Self-Organizing Map (SOM), which indicated the circadian rhythm disorder in different degrees. These results deduced from the statistical analysis, autocorrelation and SOM strongly supported that circadian rhythms based on zebrafish BS could be used as an indicator in the environmental stress assessment.
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Affiliation(s)
- Meiyi Yang
- Institute of Environment and Ecology, Shandong Normal University, Ji'nan 250014, Shandong, China
| | - Baigang Ren
- Institute of Environment and Ecology, Shandong Normal University, Ji'nan 250014, Shandong, China; School of Physics and Electronic Science, Shandong Normal University, Ji'nan 250014, Shandong, China
| | - Linlin Qiao
- Institute of Environment and Ecology, Shandong Normal University, Ji'nan 250014, Shandong, China
| | - Baixiang Ren
- Institute of Environment and Ecology, Shandong Normal University, Ji'nan 250014, Shandong, China
| | - Yongyuan Hu
- Institute of Environment and Ecology, Shandong Normal University, Ji'nan 250014, Shandong, China
| | - Ruibin Zhao
- Institute of Environment and Ecology, Shandong Normal University, Ji'nan 250014, Shandong, China
| | - Zongming Ren
- Institute of Environment and Ecology, Shandong Normal University, Ji'nan 250014, Shandong, China.
| | - Jun Du
- School of Physics and Electronic Science, Shandong Normal University, Ji'nan 250014, Shandong, China
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38
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Liu Z, Zhang Y, Han F, Yan P, Liu B, Zhou Q, Min F, He F, Wu Z. Investigation on the adsorption of phosphorus in all fractions from sediment by modified maifanite. Sci Rep 2018; 8:15619. [PMID: 30353133 PMCID: PMC6199331 DOI: 10.1038/s41598-018-34144-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 10/07/2018] [Indexed: 12/15/2022] Open
Abstract
Sediment phosphorus (P) removal is crucial for the control of eutrophication, and the in-situ adsorption is an essential technique. In this study, modified maifanite (MMF) prepared by acidification, alkalization, salinization, calcination and combined modifications, respectively, were first applied to treat sediment P. The morphology and microstructure of MMF samples were characterized by X-ray fluorescence (XRF), Fourier transform infrared (FTIR), X-ray diffraction (XRD), scanning electron microscope (SEM) and Brunauer-Emmett-Teller (BET). Various adsorption parameters were tested, such as dosage of maifanite, time, operation pH and temperature. The adsorption mechanisms were also investigated and discussed. Results showed that CMMF-H2.5-400 (2.5 mol/L H2SO4 and calcined at 400 °C) exhibited the highest P adsorption capacity. Thus, it was selected as the in-situ adsorbent material to control the internal P loading. Under the optimal conditions of dynamic experiments, the adsorption rates of TP, IP, OP, Fe/Al-P and Ca-P by CMMF-H2.5-400 were 37.22%, 44.41%, 25.54%, 26.09% and 60.34%, respectively. The adsorption mechanisms analysis revealed that the adsorption of P onto CMMF-H2.5-400 mainly by ligand exchange. Results of this work indicated that the modification treatment could improve the adsorption capacity of maifanite, and CMMF-H2.5-400 could be further applied to eutrophication treatment.
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Affiliation(s)
- Zisen Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yi Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China.
| | - Fan Han
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, China
| | - Pan Yan
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Biyun Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Qiaohong Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Fenli Min
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Feng He
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Zhenbin Wu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
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39
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Jahromi H, Agblevor FA. Hydrodeoxygenation of Aqueous-Phase Catalytic Pyrolysis Oil to Liquid Hydrocarbons Using Multifunctional Nickel Catalyst. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b02807] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Hossein Jahromi
- USTAR Bioenergy Center, Department of Biological Engineering, Utah State University, Logan, Utah 84322, United States
| | - Foster A. Agblevor
- USTAR Bioenergy Center, Department of Biological Engineering, Utah State University, Logan, Utah 84322, United States
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Mahmoud AS, Mostafa MK, Nasr M. Regression model, artificial intelligence, and cost estimation for phosphate adsorption using encapsulated nanoscale zero-valent iron. SEP SCI TECHNOL 2018. [DOI: 10.1080/01496395.2018.1504799] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Ahmed S. Mahmoud
- Sanitary and Environmental Engineering Research Institute, Housing and Building National Research Center, Giza, Egypt
| | - Mohamed K. Mostafa
- Environmental Engineering Program, Zewail City of Science and Technology, 6th October City, Giza, Egypt
| | - Mahmoud Nasr
- Sanitary Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt
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41
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Yang Y, Zhao Y, Liu R, Morgan D. Global development of various emerged substrates utilized in constructed wetlands. BIORESOURCE TECHNOLOGY 2018; 261:441-452. [PMID: 29627204 DOI: 10.1016/j.biortech.2018.03.085] [Citation(s) in RCA: 143] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 03/12/2018] [Accepted: 03/17/2018] [Indexed: 06/08/2023]
Abstract
Substrate selection is one of the key technical issues for constructed wetlands (CWs), which works for wastewater treatment based mainly on the biofilm principle. In recent years, many alternative substrates have been studied and applied in CWs, and a review is conducive to providing updated information on CW R&D. Based on the intensive research work especially over the last 10 years on the development of emerged substrates (except for the three conventional substrates of soil, sand, and gravel) in CWs, this review was made. The substrates are categorized depending on their main roles in pollutant removal as ion-exchange substrates, P-sorption substrates, and electron donor substrates. Among these, reuse of various waste products as substrates was suggested due to their competitive pollutant removal efficiency and minimized waste disposal. Regarding substrate development, future research on avoiding substrate clogging to extend their lifetime in CWs is needed.
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Affiliation(s)
- Yan Yang
- UCD Dooge Centre for Water Resources Research, School of Civil Engineering, Newstead Building, University College Dublin, Belfield, Dublin 4, Ireland; Department of Environmental Engineering, Anhui Jianzhu University, Hefei 230601, Anhui, PR China
| | - Yaqian Zhao
- UCD Dooge Centre for Water Resources Research, School of Civil Engineering, Newstead Building, University College Dublin, Belfield, Dublin 4, Ireland; State Key Laboratory of Eco-Hydraulic Engineering in Arid Area, Xi'an University of Technology, Xi'an 710048, PR China.
| | - Ranbin Liu
- UCD Dooge Centre for Water Resources Research, School of Civil Engineering, Newstead Building, University College Dublin, Belfield, Dublin 4, Ireland
| | - David Morgan
- UCD Dooge Centre for Water Resources Research, School of Civil Engineering, Newstead Building, University College Dublin, Belfield, Dublin 4, Ireland
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Wang C, Liu Z, Zhang Y, Liu B, Zhou Q, Zeng L, He F, Wu Z. Synergistic removal effect of P in sediment of all fractions by combining the modified bentonite granules and submerged macrophyte. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 626:458-467. [PMID: 29358138 DOI: 10.1016/j.scitotenv.2018.01.093] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 01/10/2018] [Accepted: 01/10/2018] [Indexed: 06/07/2023]
Abstract
The removal efficiency of sediment phosphorus (P) with the in-situ synergistic effect of modified bentonite granules (MBG) and Vallisneria spiralis (V. spiralis) in West Lake, Hangzhou, China was investigated for the first time in the study. CMBG-Na10-450 (nitrification (10% Na2CO3)-calcination (450 °C) combined modification) was prepared and characterized, and the removal effects of sediment P of all fractions with CMBG-Na10-450 and V. spiralis in combination and separately were evaluated in batch experiments. Results showed that CMBG-Na10-450 could promote the growth of V. spiralis, and the residual P of the sediment not adsorbed on CMBG-Na10-450 was changed through root oxygenation and nutrition allocation, and then enhanced the extra P adsorption on CMBG-Na10-450. The combination of MBG and V. spiralis exhibited a synergistic removal effect higher than the summation of MBG and V. spiralis applied separately. The results of microcosm experiments showed that the combination of CMBG-Na10-450 and V. spiralis enhanced the function of P metabolism by increasing the special genus that belongs to the family Erysipelotrichaceae.
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Affiliation(s)
- Chuan Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zisen Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yi Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
| | - Biyun Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Qiaohong Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Lei Zeng
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Feng He
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Zhenbin Wu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
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43
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Guo T, Yang H, Liu Q, Gu H, Wang N, Yu W, Dai Y. Adsorptive removal of phosphate from aqueous solutions using different types of red mud. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2018; 2017:570-577. [PMID: 29851410 DOI: 10.2166/wst.2018.182] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Red mud (RM) is an industrial waste generated during production of alumina from using the Bayer process or the sintering process. Four types of red mud from China were characterized for their diverse chemical and mineral compositions using inductively coupled plasma-atomic emission spectroscopy (ICP-AES), inductively coupled plasma-mass spectrometry (ICP-MS) and X-ray diffraction (XRD). Acid treatment was employed to obtain activated red mud (ARM), posing increased surface areas from 10-28 m2/g to 220-350 m2/g. RMs and ARMs were used to adsorb phosphate in solution to compare the adsorption capacity. Sample GZ3, a red mud from the sintering process, presented the highest adsorption capacity among the four raw RMs, posing an adsorption capacity of 0.37 mg P/g in the solution of 1 mg P/L with a solid/solution ratio of 0.5 g: 1 L. Whereas, activated GX (AGX), a high iron Bayer red mud from diaspore bauxite, showed the highest adsorption capacity of all the ARMs, with an adsorption capacity of 1.92 mg P/g in the same condition. The dynamic studies indicate that the adsorption mainly followed the pseudo second-order model. The models of Freundlich and Langmuir were used to simulate the sorption equilibrium on GZ3 and AGX. It suggests that the Freundlich model had a better correlation with GZ3 while the Langmuir model fitted well with AGX.
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Affiliation(s)
- Tengfei Guo
- Key Laboratory of High-temperature and High-pressure Study of the Earth's Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China E-mail: ; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Haiquan Yang
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| | - Qingyou Liu
- Key Laboratory of High-temperature and High-pressure Study of the Earth's Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China E-mail:
| | - Hannian Gu
- Key Laboratory of High-temperature and High-pressure Study of the Earth's Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China E-mail:
| | - Ning Wang
- Key Laboratory of High-temperature and High-pressure Study of the Earth's Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China E-mail:
| | - Wenbin Yu
- State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| | - Yang Dai
- Key Laboratory of High-temperature and High-pressure Study of the Earth's Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China E-mail: ; University of Chinese Academy of Sciences, Beijing 100049, China; Red Star Development Dragon Chemical Industry Co., Ltd, Tongren 554001, China
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44
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Synthesis of dipolar grafted hydroxyethyl cellulose and its application for the removal of phosphate ion from aqueous medium by adsorption. Int J Biol Macromol 2018; 109:492-506. [DOI: 10.1016/j.ijbiomac.2017.12.083] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 10/17/2017] [Accepted: 12/13/2017] [Indexed: 11/18/2022]
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Li S, Cooke RA, Huang X, Christianson L, Bhattarai R. Evaluation of fly ash pellets for phosphorus removal in a laboratory scale denitrifying bioreactor. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 207:269-275. [PMID: 29179116 DOI: 10.1016/j.jenvman.2017.11.040] [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: 08/07/2017] [Revised: 10/24/2017] [Accepted: 11/15/2017] [Indexed: 06/07/2023]
Abstract
Nitrate and orthophosphate from agricultural activities contribute significantly to nutrient loading in surface water bodies around the world. This study evaluated the efficacy of woodchips and fly ash pellets in tandem to remove nitrate and orthophosphate from simulated agricultural runoff in flow-through tests. The fly ash pellets had previously been developed specifically for orthophosphate removal for this type of application, and the sorption bench testing showed a good promise for flow-through testing. The lab-scale horizontal-flow bioreactor used in this study consisted of an upstream column filled with woodchips followed by a downstream column filled with fly ash pellets (3 and 1 m lengths, respectively; both 0.15 m diameter). Using influent concentrations of 12 mg/L nitrate and 5 mg/L orthophosphate, the woodchip bioreactor section was able to remove 49-85% of the nitrate concentration at three hydraulic retention times ranging from 0.67 to 4.0 h. The nitrate removal rate for woodchips ranged from 40 to 49 g N/m3/d. Higher hydraulic retention times (i.e., smaller flow rates) corresponded with greater nitrate load reduction. The fly ash pellets showed relatively stable removal efficiency of 68-75% across all retention times. Total orthophosphate adsorption by the pellets was 0.059-0.114 mg P/g which was far less than the saturated capacity (1.69 mg/g; based on previous work). The fly ash pellets also removed some nitrate and the woodchips also removed some orthophosphate, but these reductions were not significant. Overall, woodchip denitrification followed by fly ash pellet P-sorption can be an effective treatment technology for nitrate and phosphate removal in subsurface drainage.
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Affiliation(s)
- Shiyang Li
- Department of Agricultural and Biological Engineering, University of Illinois at Urbana Champaign, 1304 W Pennsylvania Ave #338, Urbana IL 61801, USA
| | - Richard A Cooke
- Department of Agricultural and Biological Engineering, University of Illinois at Urbana Champaign, 1304 W Pennsylvania Ave #338, Urbana IL 61801, USA
| | - Xiangfeng Huang
- College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Ministry of Education Key Laboratory of Yangtze River Water Environment, Tongji University, Shanghai 200092, PR China
| | - Laura Christianson
- Department of Crop Sciences, University of Illinois at Urbana Champaign, AW-101 Turner Hall, 1102 South Goodwin Avenue, Urbana, IL, 61801, USA
| | - Rabin Bhattarai
- Department of Agricultural and Biological Engineering, University of Illinois at Urbana Champaign, 1304 W Pennsylvania Ave #338, Urbana IL 61801, USA.
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46
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Naushad M, Sharma G, Kumar A, Sharma S, Ghfar AA, Bhatnagar A, Stadler FJ, Khan MR. Efficient removal of toxic phosphate anions from aqueous environment using pectin based quaternary amino anion exchanger. Int J Biol Macromol 2018; 106:1-10. [DOI: 10.1016/j.ijbiomac.2017.07.169] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 07/19/2017] [Accepted: 07/28/2017] [Indexed: 10/19/2022]
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47
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Nguyen DD, Yoon YS, Bui XT, Kim SS, Chang SW, Guo W, Ngo HH. Influences of operational parameters on phosphorus removal in batch and continuous electrocoagulation process performance. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:25441-25451. [PMID: 28936599 DOI: 10.1007/s11356-017-0180-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 09/11/2017] [Indexed: 06/07/2023]
Abstract
Performance of an electrocoagulation (EC) process in batch and continuous operating modes was thoroughly investigated and evaluated for enhancing wastewater phosphorus removal under various operating conditions, individually or combined with initial phosphorus concentration, wastewater conductivity, current density, and electrolysis times. The results revealed excellent phosphorus removal (72.7-100%) for both processes within 3-6 min of electrolysis, with relatively low energy requirements, i.e., less than 0.5 kWh/m3 for treated wastewater. However, the removal efficiency of phosphorus in the continuous EC operation mode was better than that in batch mode within the scope of the study. Additionally, the rate and efficiency of phosphorus removal strongly depended on operational parameters, including wastewater conductivity, initial phosphorus concentration, current density, and electrolysis time. Based on experimental data, statistical model verification of the response surface methodology (RSM) (multiple factor optimization) was also established to provide further insights and accurately describe the interactive relationship between the process variables, thus optimizing the EC process performance. The EC process using iron electrodes is promising for improving wastewater phosphorus removal efficiency, and RSM can be a sustainable tool for predicting the performance of the EC process and explaining the influence of the process variables.
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Affiliation(s)
- Dinh Duc Nguyen
- Department for Management of Science and Technology Development & Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Vietnam
- Department of Environmental Energy Engineering, Kyonggi University, Suwon, Republic of Korea
| | - Yong Soo Yoon
- Department of Chemical Engineering, Dankook University, Yongin, Republic of Korea
| | - Xuan Thanh Bui
- Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology, Ho Chi Minh City, Vietnam
- Faculty of Food and Environment, Dong Nai Technology University, Dong Nai, Vietnam
| | - Sung Su Kim
- Department of Environmental Energy Engineering, Kyonggi University, Suwon, Republic of Korea
| | - Soon Woong Chang
- Department of Environmental Energy Engineering, Kyonggi University, Suwon, Republic of Korea.
| | - Wenshan Guo
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology, Sydney, NSW, 2007, Australia
| | - Huu Hao Ngo
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology, Sydney, NSW, 2007, Australia.
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48
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Bal Krishna KC, Niaz MR, Sarker DC, Jansen T. Phosphorous removal from aqueous solution can be enhanced through the calcination of lime sludge. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2017; 200:359-365. [PMID: 28599219 DOI: 10.1016/j.jenvman.2017.06.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2016] [Revised: 05/31/2017] [Accepted: 06/02/2017] [Indexed: 06/07/2023]
Abstract
Water treatment plants generate an enormous amount of the sludge which is normally treated as waste. In the recent past, many investigations have been focused on developing an economical adsorbent using water treatment sludge to remove phosphorous (P) from aqueous solutions. However, the great extents of the studies have been limited in the use of alum- and iron-based sludges. This study, therefore, investigated the P removal performance of the calcined lime sludge. Calcined lime sludge at 700 °C significantly enhanced the P removal efficiency whereas marginal improvement was noted when the sludge calcined at 400 °C was tested. With increase P removal efficiency, final pH values of the solution also significantly increased. P removal efficiency of the calcined sludge decreased with increasing the initial P concentrations. However, the removal efficiency could be improved by increasing the weight of the sludge. Further analysis demonstrated that P removal trend followed both pseudo-second order and diffusion-chemisorption kinetics signifying the P removal is potentially due to a multi-mechanistic reaction in which, the process is controlled by intra-particle diffusion followed by chemisorptions.
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Affiliation(s)
- K C Bal Krishna
- School of Computing Engineering and Mathematics, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia; Department of Civil Engineering, Curtin University, GPO Box U1987, Perth, WA, 6845, Australia.
| | - Mohamed R Niaz
- Department of Civil Engineering, Curtin University, GPO Box U1987, Perth, WA, 6845, Australia
| | - Dipok C Sarker
- Department of Civil Engineering, Curtin University, GPO Box U1987, Perth, WA, 6845, Australia
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Sujitha R, Ravindhranath K. Extraction of Phosphate from Polluted Waters Using Calcium Alginate Beads Doped with Active Carbon Derived from A. aspera Plant as Adsorbent. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2017; 2017:3610878. [PMID: 28932619 PMCID: PMC5592394 DOI: 10.1155/2017/3610878] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 07/27/2017] [Accepted: 07/31/2017] [Indexed: 05/26/2023]
Abstract
An adsorbent prepared by entrapping active carbon derived from the stems of Achyranthes aspera plant in the calcium alginate beads (CABAA) has been investigated for its adsorption nature towards the removal of phosphate by varying various physicochemical parameters. Surface morphological studies are made using FTIR, XRD, FESEM, and EDX. The sorption mechanism is analyzed using Freundlich, Langmuir, Dubinin-Radushkevich, and Temkin adsorption isotherms. The adsorption kinetics is found to follow the pseudo-second-order model. Thermodynamic parameters are analyzed and found that the adsorption is endothermic and nonspontaneous in nature. The maximum amount of phosphate adsorbed onto CABAA is found to be 133.3 mg/g of active carbon and, furthermore, the adsorbent is highly selective. The methodology developed is successfully applied to polluted water samples.
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Affiliation(s)
- Ravulapalli Sujitha
- Department of Chemistry, K L University, Green Fields, Vaddeswaram, Guntur District 522 502, India
| | - Kunta Ravindhranath
- Department of Chemistry, K L University, Green Fields, Vaddeswaram, Guntur District 522 502, India
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50
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Ding W, Bai S, Mu H, Naren G. Investigation of phosphate removal from aqueous solution by both coal gangues. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2017; 76:785-792. [PMID: 28799925 DOI: 10.2166/wst.2017.241] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Equilibrium studies were carried out for the adsorption of phosphate onto newly discharged coal gangue and spontaneous combustion coal gangue, which are industrial solid residues. The experimental data were fitted to the two-parameter equations of Freundlich, Langmuir, Temkin, and Dubinin-Radushkevich and the three-parameter equations of the Redlich-Peterson, Sips and Toth isotherms by non-linear method. All three-parameter isotherm equations have a higher correlation coefficient than the two-parameter isotherm equations. For new discharged coal gangue, the maximum phosphate adsorption capacity is over 2.504 mg/g (as P), and the best two-parameter isotherm is Freundlich, which indicated multilayer adsorption takes place on the surface. For spontaneous combustion coal gangue, the maximum phosphate adsorption capacity is 7.079 mg/g (as P), two times larger than new discharged coal gangue, and the best two-parameter isotherm is Langmuir, suggesting that the adsorption process occurs on a homogenous surface by monolayer adsorption. The three-parameter isotherm model of Redlich-Peterson shows the best fitting in both cases, but parameter g is 0.6138 in new discharged coal gangue (the parameter g is nearly 1, which means that the equilibrium isotherm behaves as the Langmuir, not as the Freundlich isotherm), g approaches to unity in spontaneous combustion coal gangue, suggesting that the two kinds of coal gangues have different adsorption properties.
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Affiliation(s)
- Wei Ding
- School of Ecology and Environment, Inner Mongolia University, No. 235 West University Road, Saihan, Hohhot 010021, China E-mail:
| | - Shuqin Bai
- School of Ecology and Environment, Inner Mongolia University, No. 235 West University Road, Saihan, Hohhot 010021, China E-mail:
| | - Haorong Mu
- School of Ecology and Environment, Inner Mongolia University, No. 235 West University Road, Saihan, Hohhot 010021, China E-mail:
| | - Gaowa Naren
- Biochemical Engineering Institute, Hohhot Vocational College, Daxuecheng Saihan-qu, Hohhot 010021, China
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