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Deng L, Gu S, Wang R, He Y, Dong H, Wang X. Facile Synthesis of Functional Mesoporous Organosilica Nanospheres and Adsorption Properties Towards Pb(II) Ions. NANOMATERIALS (BASEL, SWITZERLAND) 2025; 15:136. [PMID: 39852751 PMCID: PMC11767340 DOI: 10.3390/nano15020136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2024] [Revised: 01/15/2025] [Accepted: 01/15/2025] [Indexed: 01/26/2025]
Abstract
We successfully synthesize monodisperse sulfhydryl-modified mesoporous organosilica nanospheres (MONs-SH) via one-step hydrolytic condensation, where cetyltrimethylammonium chloride and dodecyl sulfobetaine are employed as dual-template agents with (3-mercaptopropyl)triethoxysilane and 1,2-bis(triethoxysilyl)ethane as the precursors and concentrated ammonia as the alkaline catalyst. The prepared MONs-SHs deliver a large specific surface area (729.15 m2 g-1), excellent monodispersity, and homogeneous particle size. The introduction of ethanol into the reaction systems could expand the particle size of the synthesized MONs-SH materials from 18 to 182 nm. Moreover, the successful modification of -SH groups endowed MONs-SHs with an excellent adsorption capacity (297.12 mg g-1) for Pb2+ ions in aqueous solution through ion exchange and complexation function. In addition, the established isotherm model and kinetic analyses reveal that the adsorption of Pb2+ ions on MONs-SHs follows the secondary reaction kinetic models, where both physisorption and chemisorption contribute to the adsorption of Pb2+ ions. The favorable recyclability of MONs-SHs is demonstrated with the maintained adsorption efficiency of 85.35% after six cycles. The results suggest that the synthesized MONs-SHs exhibit considerable application prospects for effectively eliminating Pb2+ ions from aqueous solutions.
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Affiliation(s)
- Liping Deng
- Yunnan Key Laboratory of Modern Separation Analysis and Substance Transformation, College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650500, China
| | - Shichun Gu
- Yunnan Key Laboratory of Modern Separation Analysis and Substance Transformation, College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650500, China
| | - Ruyi Wang
- Yunnan Key Laboratory of Modern Separation Analysis and Substance Transformation, College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650500, China
| | - Yapeng He
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
| | - Hairong Dong
- Yunnan Key Laboratory of Modern Separation Analysis and Substance Transformation, College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650500, China
| | - Xue Wang
- Yunnan Key Laboratory of Modern Separation Analysis and Substance Transformation, College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650500, China
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2
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Malibekova A, Guliants V. Rational design of selective functionalized silica adsorbents for Hg(II) removal from FGD wastewater. A combined experimental and theoretical study. Phys Chem Chem Phys 2023; 25:23286-23295. [PMID: 37609920 DOI: 10.1039/d3cp02694a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
The binding of Hg2+ by mercaptan-functionalized silica possessing different physical characteristics was explored through experimental investigations and theoretical calculations. The impacts of the pore structure of silica adsorbents on functionalization and the kinetics of Hg2+ adsorption were also studied. The mechanism of Hg2+ adsorption was proposed based on the results of experimental and theoretical studies. The DFT calculations suggested a simultaneous monodentate and bidentate Hg2+ complex formation on sulfur-containing surface functional groups that strongly depends on the Hg2+ concentration. Theoretical Hg2+ adsorption isotherms predicted by DFT calculations have shown that even when the adsorbent surface had heterogeneous adsorption sites capable of simultaneous monodentate and bidentate complexation, the adsorption still followed the Langmuir model.
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Affiliation(s)
- Alma Malibekova
- Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221, USA.
| | - Vadim Guliants
- Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221, USA.
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3
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Hashimoto Y, Sonoda K, Nagao Y, Wang SL. Soluble soil Pb minimized by thermal transformation to Pb-bearing feldspar. JOURNAL OF HAZARDOUS MATERIALS 2023; 457:131729. [PMID: 37269560 DOI: 10.1016/j.jhazmat.2023.131729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/15/2023] [Accepted: 05/27/2023] [Indexed: 06/05/2023]
Abstract
Thermal transformation is an effective remediation measure to stabilize soil Pb and other heavy metals via transformation into less soluble compounds. This study aimed to determine the solubility of Pb in soils subjected to heating at a range of temperatures (100-900 °C) in relation to the changes in Pb speciation using XAFS spectroscopy. Lead solubility in the contaminated soils after thermal treatment corresponded well to the chemical species of Pb present. As the temperature was increased to 300 °C, cerussite and Pb associated with humus started to decompose in the soils. As the temperature was further increased to 900 °C, the amount of water and HCl extractable Pb decreased significantly from the soils, whereas Pb-bearing feldspar started to occur, accounting for nearly 70% of the soil Pb. During thermal treatment, Pb species in the soils were little affected by Fe oxides that showed a significant phase transformation into hematite. Our study proposes the following underlying mechanisms for Pb immobilization in thermally treated soils: i) thermally labile Pb species such as PbCO3 and Pb associated with humus start to decompose at temperatures around 300 °C, ii) aluminosilicates with crystalline and poorly ordered structures undergo thermal decomposition at temperatures around 400 °C, iii) liberating Pb in the soil is then associated with a Si and Al rich liquid derived from thermally decomposed aluminosilicates at higher temperatures, and iv) the formation of Pb-feldspar like minerals is enhanced at 900 °C.
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Affiliation(s)
| | - Kento Sonoda
- Tokyo University of Agriculture and Technology, Japan
| | - Yuki Nagao
- Tokyo University of Agriculture and Technology, Japan
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4
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Sandomierski M, Jakubowski M, Ratajczak M, Pokora M, Zielińska M, Voelkel A. Release of drugs used in the treatment of osteoporosis from zeolites with divalent ions-Influence of the type of ion and drug on the release profile. J Biomed Mater Res B Appl Biomater 2023; 111:1005-1014. [PMID: 36451589 DOI: 10.1002/jbm.b.35209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 11/14/2022] [Accepted: 11/23/2022] [Indexed: 12/03/2022]
Abstract
Bisphosphonates are drugs that are used to treat osteoporosis that causes the low mineral density of the bones. These drugs can be delivered in several ways, but each method has disadvantages. Materials with high potential as carriers of these drugs are zeolites with divalent ions. The aim of this study was to investigate the effect of divalent cations (calcium, magnesium, zinc) and drug type (risedronate, zoledronate) on sorption and release of the drug for osteoporosis. It was proved that drug sorption occurs on all zeolites presented in this work. Risedronate sorption was highest in zinc zeolite and lowest in calcium zeolite. In the case of zoledronate, sorption was most effective in magnesium zeolite and the least effective in zinc zeolite. Very large differences in drug release profiles were also observed. Risedronate was released several times longer than zoledronate. The diversity of the results indicates that the examined materials can be used in different types of drug delivery systems. They can be used, for example, intravenously or in the form of implants due to the different release profiles. Furthermore, the proposed carriers also release magnesium and calcium ions which are used in the prevention of osteoporosis, and zinc ions which have antibacterial properties.
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Affiliation(s)
- Mariusz Sandomierski
- Institute of Chemical Technology and Engineering, Poznan University of Technology, Poznań, Poland
| | - Marcel Jakubowski
- Institute of Chemical Technology and Engineering, Poznan University of Technology, Poznań, Poland
| | - Maria Ratajczak
- Institute of Building Engineering, Poznan University of Technology, Poznań, Poland
| | - Monika Pokora
- Center for Advanced Technologies, Adam Mickiewicz University, Poznań, Poland
| | - Monika Zielińska
- Institute of Chemical Technology and Engineering, Poznan University of Technology, Poznań, Poland
| | - Adam Voelkel
- Institute of Chemical Technology and Engineering, Poznan University of Technology, Poznań, Poland
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5
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Ai S, Qin Y, Hong Y, Liu L, Yu W. Low-temperature aerobic carbonization and activation of cellulosic materials for Pb 2+ removal in water source. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 314:120215. [PMID: 36150617 DOI: 10.1016/j.envpol.2022.120215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 09/04/2022] [Accepted: 09/16/2022] [Indexed: 06/16/2023]
Abstract
Targeting the removal of Pb2+ in wastewater, cellulosic materials were carbonized in an aerobic environment and activated via ion exchange. The maximum adsorption capacity reached 243.5 mg/g on an MCC-derived adsorbent activated with sodium acetate. The modified porous properties improved the adsorption capacity. The capacity could be completely recovered five times through elution with EDTA. Because of the negative effects of Ni, Mg, and Ca elements, the adsorption capacities of activated carbonized natural materials were lower than that of pure cellulose. N2 adsorption measurement showed that the adsorbent had a large specific surface area as well as abundant micropores and 4-nm-sized mesopores. FTIR and surface potential results proved that carboxyl group was generated in the aerobic carbonization, and was deprotonated during ion exchange. This adsorbent consisted of C-C bonds as the building blocks and hydrophilic groups on the surface. XPS results demonstrated that the Pb 4f binding energies were reduced by 0.7-0.8 eV due to the interaction between Pb2+ and the activated adsorbent, indicating that the carboxylate groups bonded with Pb2+ through coordination interactions. Pseudo-second-order and Elovich kinetic models were well fitted with the adsorption processes on the pristine and activated carbonized adsorbents, indicative of chemisorption on heterogeneous surfaces. The Freundlich expression agreed well with the data measured, and the pristine and activated adsorbents had weak and strong affinities for Pb2+, respectively. The Pb2+ adsorption process was exothermic and spontaneous, and heat release determined the spontaneity. The adsorption capacity is attributed to the carboxylate groups and pores generated in the aerobic oxidation and ion exchange procedures.
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Affiliation(s)
- Shuo Ai
- College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou City, 545006, China.
| | - Yue Qin
- College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou City, 545006, China
| | - Yuxiang Hong
- College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou City, 545006, China
| | - Linghui Liu
- College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou City, 545006, China
| | - Wanguo Yu
- College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou City, 545006, China
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6
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Gul S, Ahmad Z, Asma M, Ahmad M, Rehan K, Munir M, Bazmi AA, Ali HM, Mazroua Y, Salem MA, Akhtar MS, Khan MS, Chuah LF, Asif S. Effective adsorption of cadmium and lead using SO 3H-functionalized Zr-MOFs in aqueous medium. CHEMOSPHERE 2022; 307:135633. [PMID: 35810866 DOI: 10.1016/j.chemosphere.2022.135633] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Revised: 06/26/2022] [Accepted: 07/03/2022] [Indexed: 06/15/2023]
Abstract
Cadmium (Cd) and Lead (Pb) from industrial wastewater can bioaccumulate in the living organisms of water bodies, posing serious threats to human health. Therefore, efficient remediation of heavy metal ions of Cd (II) and Pb (II) in aqueous media is necessary for public health and environmental sustainability. In the present study, water stable Zirconium (Zr) based metal organic frameworks (MOFs) with SO3H functionalization were synthesized by solvothermal method and used first time for the adsorption of Cd (II) and Pb (II). Synthesis of UiO-66-SO3H, nano-sized (<100 nm) MOFs, was confirmed by FTIR, XRD, FESEM and BET. Effects of contact time, pH and temperature were investigated for adsorption of Cd (II) and Pb (II) onto SO3H-functionalized Zr-MOFs. The UiO-66-SO3H displayed notable rejections of 97% and 88% towards Cd (II) and Pb (II), respectively, after 160 min at 25 °C and pH (6) with an initial concentration of 1000 mg/L. Adsorption capacities of Cd (II) and Pb (II) were achieved as 194.9154 (mg/g) and 176.6879 (mg/g), respectively, at an initial concentration of 1000 mg/L. The Pseudo second-order kinetic model fitted well with linear regression (R2) of value 1. The mechanism was confirmed mainly as a chemisorption and coordination interaction between sulfone group (-SO3H) and metal ions Cd (IIa) and Pb (II). These results may support effective adsorption and can be studied further to enrich and recycle other heavy metals from wastewater.
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Affiliation(s)
- Seema Gul
- Department of Environmental Sciences (FC), International Islamic University Islamabad, H-10 Sector, Pakistan
| | - Zubair Ahmad
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 712-749, South Korea
| | - Maliha Asma
- Department of Environmental Sciences (FC), International Islamic University Islamabad, H-10 Sector, Pakistan
| | - Mushtaq Ahmad
- Department of Plant Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Kanwar Rehan
- Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | - Mamoona Munir
- Department of Biological Sciences, International Islamic University, Islamabad, Pakistan
| | - Aqeel Ahmed Bazmi
- Chemical Engineering Department, COMSATS University Islamabad (CUI), Lahore Campus, Lahore, Punjab, 54000, Pakistan
| | - Hazim M Ali
- Department of Chemistry, College of Science, Jouf University, P.O. Box 2014, Sakaka, Aljouf, Saudi Arabia.
| | - Yasser Mazroua
- Department of Agricultural Economics, Faculty of Agriculture, Tanta University, Tanta, Egypt
| | - Mohamed A Salem
- Department of Chemistry, Faculty of Science & Arts, King Khalid University, Mohail, Assir, Saudi Arabia; Department of Chemistry, Faculty of Science, Al-Azhar University, Nasr City, 11884, Cairo, Egypt
| | - Muhammad Saeed Akhtar
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 712-749, South Korea.
| | - Mohd Shariq Khan
- Department of Chemical Engineering, Dhofar University, Salalah, 211, Oman
| | - Lai Fatt Chuah
- Faculty of Maritime Studies, Universiti Malaysia Terengganu, Terengganu, Malaysia
| | - Saira Asif
- Faculty of Sciences, Department of Botany, PMAS Arid Agriculture University, Rawalpindi, Punjab, 46300, Pakistan.
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7
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Mane SM, Raorane CJ, Shin JC. Synthesis of Mesoporous Silica Adsorbent Modified with Mercapto-Amine Groups for Selective Adsorption of Cu 2+ Ion from Aqueous Solution. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3232. [PMID: 36145020 PMCID: PMC9503849 DOI: 10.3390/nano12183232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/15/2022] [Accepted: 09/16/2022] [Indexed: 06/16/2023]
Abstract
In a sol-gel co-condensation, a mesoporous silica hybrid integrated with (3-mercaptopropyl)trimethoxysilane (TMPSH) was prepared and then reacted with allylamine via a post-surface functionalization approach. Approximately 15 mol% of TMSPSH was introduced into the mesoporous silica pore walls along with tetraethyl orthosilicate. The mercapto ligands in the prepared mesoporous silica pore walls were then reacted with allylamine (AM) to form the mercapto-amine-modified mesoporous silica adsorbent (MSH@MA). The MSH@MA NPs demonstrate highly selective adsorption of copper (Cu2+) ions (~190 mg/g) with a fast equilibrium adsorption time (30 min). The prepared adsorbent shows at least a five times more efficient recyclable stability. The MSH@MA NPs adsorbent is useful for selective adsorption of Cu2+ ions.
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Affiliation(s)
- Sagar M. Mane
- Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Korea
| | | | - Jae Cheol Shin
- Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Korea
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8
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Lou J, Fu Q, Yu L, Yuan H, Zhao J, Wang L, Shi D, Mo C, Luo J. Highly effective removal of Pb2+ from wastewater by nickel-based metal organic framework. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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9
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Singh A, Chauhan S, Varjani S, Pandey A, Bhargava PC. Integrated approaches to mitigate threats from emerging potentially toxic elements: A way forward for sustainable environmental management. ENVIRONMENTAL RESEARCH 2022; 209:112844. [PMID: 35101398 DOI: 10.1016/j.envres.2022.112844] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/13/2022] [Accepted: 01/25/2022] [Indexed: 06/14/2023]
Abstract
Potentially toxic elements (PTEs) such as toxic metal (loid)s and other emerging hazardous contaminants, exist in the environment and poses a serious threat. A large amount of wastewater containing PTEs such as cadmium, chromium, copper, nickel, arsenic, lead, zinc, etc. Release from industries during production process. Besides these, chemical-based fertilizers used in soils during crop production have become one of the crucial sources of PTEs. Various techniques are being employed for the mitigation of PTEs like chemical precipitation, ion exchange, coagulation, activated carbon, adsorption, membrane filtration, and bioremediation. Among these mitigation strategies, biological processes such as bioremediation, phytoremediation etc. Are extensively used, as they are economic have high-efficiency rate and are eco-friendly. This review intends to provide information on PTEs contamination through various sources; along with the toxicity of metal (loid)s with respect to their patterns of transmission and risks in the changing environment. Various remediation methods for the management of these pollutants along with their techno-economic perspective are also summarized in this review.
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Affiliation(s)
- Anuradha Singh
- Aquatic Toxicology Laboratory, Environmental Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh, India
| | - Shraddha Chauhan
- Aquatic Toxicology Laboratory, Environmental Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh, India
| | | | - Ashok Pandey
- Centre for Innovation and Transnational Research, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh, India; Center for Energy and Environmental Sustainability, Lucknow, 226029, Uttar Pradesh, India; Sustainability Cluster, School of Engineering, University of Petroleum and Energy Studies, Dehradun, 248007,Uttarakhand, India
| | - Preeti Chaturvedi Bhargava
- Aquatic Toxicology Laboratory, Environmental Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh, India.
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10
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Tran CC, Dong HC, Truong VTN, Bui TTM, Nguyen HN, Nguyen TAT, Dang NN, Nguyen MV. Enhancing the remarkable adsorption of Pb 2+ in a series of sulfonic-functionalized Zr-based MOFs: a combined theoretical and experimental study for elucidating the adsorption mechanism. Dalton Trans 2022; 51:7503-7516. [PMID: 35506481 DOI: 10.1039/d2dt01009g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A series of Zr-based metal-organic frameworks was prepared via the solvothermal route using sulfonic-rich linkers for the efficient capture of Pb2+ ions from aqueous medium. The factors affecting adsorption such as the solution pH, adsorbent dosage, contact time, adsorption isotherms, and mechanism were studied. Consequently, the maximum adsorption capacity of Pb2+ on the acidified VNU-23 was determined to be 617.3 mg g-1, which is much higher than that of previously reported adsorbents and MOF materials. Furthermore, the adsorption isotherms and kinetics of the Pb2+ ion are in good accordance with the Langmuir and pseudo-second-order kinetic model, suggesting that the uptake of Pb2+ is a chemisorption process. The reusability experiments demonstrated the facile recovery of the H+⊂VNU-23 material through immersion in an HNO3 solution (pH = 3), where its Pb2+ adsorption efficiency still remained at about 90% of the initial uptake over seven cycles. Remarkably, the adsorption mechanism was elucidated through a combined theoretical and experimental investigation. Accordingly, the Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy, scanning electron microscopy connected to energy-dispersive X-ray mapping (SEM-EDX-mapping), and X-ray photoelectron spectroscopy (XPS) analysis of the Pb⊂VNU-23 sample and comparison with H+⊂VNU-23 confirmed that the electrostatic interaction occurs via the interaction between the SO3- moieties in the framework and the Pb2+ ion, leading to the formation of a Pb-O bond. In addition, the density functional theory (DFT) calculations showed the effective affinity of the MOF adsorbent toward the Pb2+ ion via the strong driving force mentioned in the experimental studies. Thus, these findings illustrate that H+⊂VNU-23 can be employed as a potential adsorbent to eliminate Pb2+ ions from wastewater.
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Affiliation(s)
- Cuong C Tran
- Faculty of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City, 700000, Vietnam.
| | - Hieu C Dong
- Future Materials and Devices Laboratory, Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City, 700000, Vietnam.,Faculty of Natural Sciences, Duy Tan University, Da Nang, 550000, Vietnam
| | - Vy T N Truong
- Royal Melbourne Institute of Technology (RMIT) University, Ho Chi Minh City 700000, Vietnam
| | - Thinh T M Bui
- Faculty of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City, 700000, Vietnam.
| | - Hung N Nguyen
- Faculty of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City, 700000, Vietnam.
| | - Tuyet A T Nguyen
- Faculty of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City, 700000, Vietnam.
| | - Nam N Dang
- Future Materials and Devices Laboratory, Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City, 700000, Vietnam.,Faculty of Natural Sciences, Duy Tan University, Da Nang, 550000, Vietnam
| | - My V Nguyen
- Faculty of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City, 700000, Vietnam.
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Gao S, Liu Y. Potassium-assisted synthesis of SUZ-4 zeolite as an efficient adsorbent for Pb2+ removal from wastewater. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120438] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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12
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Mo L, Tan Y, Shen Y, Zhang S. Highly compressible nanocellulose aerogels with a cellular structure for high-performance adsorption of Cu(II). CHEMOSPHERE 2022; 291:132887. [PMID: 34785178 DOI: 10.1016/j.chemosphere.2021.132887] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 11/08/2021] [Accepted: 11/11/2021] [Indexed: 06/13/2023]
Abstract
Cellulose-based aerogels have considerable potential for various application due to renewable, low cost, and high availability. However, mechanical robustness and functionalization remain major challenges. Here, we synthesized a compressible, recoverable cellulose nanofiber (CNF)/carboxymethyl cellulose (CMC)/branched polyethyleneimine (BPEI) aerogel via electrostatic-modulated interfacial covalent crosslinking and freeze-drying process. The porous BPEI@CNF/CMC aerogel possessed excellent mechanical compression and high-density metal-chelating groups, which exhibited fast adsorption kinetics and high adsorption capacity (452.49 mg g-1) in static copper adsorption process. Furthermore, BPEI@CNF/CMC aerogels displayed excellent recyclability and could still reach 85% after 10 cycles. The integrated analyses of ATR-FTIR and XPS suggested that the predominant adsorption mechanism included electrostatic interaction, ion-exchange and chelation. This strategy provides a sustainable route to fabricate efficient biomass-based adsorbents for selective copper removal from water.
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Affiliation(s)
- Liuting Mo
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing, 100083, China; Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing, 100083, China
| | - Yi Tan
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing, 100083, China; Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing, 100083, China
| | - Yulin Shen
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing, 100083, China; Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing, 100083, China
| | - Shifeng Zhang
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing, 100083, China; Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing, 100083, China.
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13
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A Comprehensive Insight on Adsorption of Polyaromatic Hydrocarbons, Chemical Oxygen Demand, Pharmaceuticals, and Chemical Dyes in Wastewaters Using Biowaste Carbonaceous Adsorbents. ADSORPT SCI TECHNOL 2022. [DOI: 10.1155/2022/9410266] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Recent trends in adsorption of hazardous organic pollutants including Polyaromatic Hydrocarbons (PAHs), Chemical Oxygen Demand (COD), Pharmaceuticals, and Chemical Dyes in wastewater using carbonaceous materials such as activated carbon (AC) and biochar (BC) have been discussed in this paper. Utilization of biomass waste in the preparation of AC and BC has gained a lot of attention recently. This review outlines the techniques used for preparation, modification, characterization, and application of the above-mentioned materials in batch studies. The approaches towards understanding the adsorption mechanisms have also been discussed. It is observed that in the majority of the studies, high removal efficiencies were reported using biowaste adsorbents. Regarding the full potential of adsorption, varying values were obtained that are strongly influenced by the adsorbent preparation technique and adsorption method. In addition, most of the studies were concentrated on the kinetic, isotherm equilibrium, and thermodynamic aspects of adsorption, suggesting the dominant isotherm and kinetic models as Langmuir or Freundlich and pseudo-second-order models. Due to development in biosorbents, adsorption has been found to be increasingly economical. However, application of these adsorbents at commercial scale has not been adequately investigated and needs to be studied. Most of the studies have been conducted on synthetic solutions that do not completely represent the discharged effluents. This also needs attention in future studies.
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14
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Mo L, Shen Y, Tan Y, Zhang S. Ultralight and shapeable nanocellulose/metal-organic framework aerogel with hierarchical cellular architecture for highly efficient adsorption of Cu(II) ions. Int J Biol Macromol 2021; 193:1488-1498. [PMID: 34740681 DOI: 10.1016/j.ijbiomac.2021.10.212] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 10/26/2021] [Accepted: 10/27/2021] [Indexed: 10/19/2022]
Abstract
Water contamination by heavy metal pollutants is a global concern due to detrimental effects on the environment and human health. Regenerable, high-performance heavy metal sorbents are urgently demanded for improved water purification. Herein, we present an elegant strategy of interweaving metal-organic framework (MOF-808-ethylene diamine tetraacetic acid) and TEMPO-oxidized cellulose nanofibers (TCNF) to construct freeways in hybrid aerogels for rapid and efficient transport and capture of heavy metal ions. In this strategy, a postsynthetic ligand exchange approach is applied to introduce ordered and high-density accessible binding sites for metal ions. The prepared aerogels show excellent shapeability, ultralow density less than 0.005 g cm-3, and high hierarchical porosity of 99.82%. Furthermore, benefiting from the abundant chelating groups and accessible surface areas, these aerogels exhibit outstanding uptake capacity of 300 mg g-1 and rapid adsorption kinetics of 0.031 mg g-1 h-1 for Cu(II) ions, significantly better than conventional TCNF aerogels. The aerogels could be easily regenerated at least five cycles without greatly performance loss. These aerogels could effectively remove diverse heavy metal ions from complicated contaminated water. Thus, this work provides a novel method to synthesize environmental-friendly, regenerable, and high-performance adsorption materials for water remediation.
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Affiliation(s)
- Liuting Mo
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing 100083, China; Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Yulin Shen
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing 100083, China; Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Yi Tan
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing 100083, China; Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Shifeng Zhang
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing 100083, China; Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China.
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15
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Mo L, Pang H, Lu Y, Li Z, Kang H, Wang M, Zhang S, Li J. Wood-inspired nanocellulose aerogel adsorbents with excellent selective pollutants capture, superfast adsorption, and easy regeneration. JOURNAL OF HAZARDOUS MATERIALS 2021; 415:125612. [PMID: 33730646 DOI: 10.1016/j.jhazmat.2021.125612] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 02/21/2021] [Accepted: 03/05/2021] [Indexed: 06/12/2023]
Abstract
Heavy metal ions can cause a series of hazards to environment and humans. Herein, we developed a wood-inspired nanocellulose aerogel adsorbent with excellent selective capability, superfast adsorption, and easy regeneration. The premise for the design is that the biomimetic honeycomb architecture and specific covalent bonding networks can provide the adsorbent with structural and mechanical integrity yet superfast removal of target contaminants. The as-obtained adsorbent showed the maximum adsorption capacity for Pb(II), Cu(II), Zn(II), Cd(II), and Mn(II) of 571 mg g-1, 462 mg g-1, 361 mg g-1, 263 mg g-1, and 208 mg g-1, respectively. The adsorbent could remove Pb(II) species with super-rapid speed (87% and 100% of its equilibrium uptake in 2 min and 10 min, respectively). Furthermore, the adsorption isotherm and kinetics models were in accord with the Langmuir and pseudo-second-order models, indicating that the adsorption behavior was dominated by monolayer chemisorption. The aerogel adsorbent had better affinity for Pb(II) than other coexisting ions in wastewater and could be regenerated for at least five cycles. Such a wood-inspired aerogel adsorbent holds great potential in the application of contaminant cleaning.
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Affiliation(s)
- Liuting Mo
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing 100083, China; Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Huiwen Pang
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing 100083, China; Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Yutong Lu
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing 100083, China; Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Zhi Li
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing 100083, China; Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Haijiao Kang
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing 100083, China; Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Maogong Wang
- CNPC Engineering Technology R&D Company Limited, Beijing 102206, China
| | - Shifeng Zhang
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing 100083, China; Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China.
| | - Jianzhang Li
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing 100083, China; Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China
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16
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Shao P, Liang D, Yang L, Shi H, Xiong Z, Ding L, Yin X, Zhang K, Luo X. Evaluating the adsorptivity of organo-functionalized silica nanoparticles towards heavy metals: Quantitative comparison and mechanistic insight. JOURNAL OF HAZARDOUS MATERIALS 2020; 387:121676. [PMID: 31759761 DOI: 10.1016/j.jhazmat.2019.121676] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 10/17/2019] [Accepted: 11/11/2019] [Indexed: 05/06/2023]
Abstract
Organo-functionalized SiO2 nanoparticles are regarded as promising adsorbents for capture of heavy metals. However, actual adsorptivity of a specific functional group onto SiO2 surface is unclear, thus extending a debate on which type of organic group possesses a better affinity toward heavy metals. Herein, surface functionalization of SiO2 with different groups (i.e., -EDTA (ethylenediamine triacetic acid), -COOH, -SO3H, -SH and -NH2) were achieved by a facile silylating reaction. Batch experiments indicated that adsorption capacity of SiO2 was remarkably improved by surface functionalization. Quantitative analysis manifested that one mole of EDTA grafted onto SiO2 surface can adsorb 1.51 mol of Pb(II) ions, which was 7.7, 17.1, 28.4 and 50.2-fold larger than those of COOH-, SO3H-, SH- and NH2-functionalized SiO2, respectively. This is first time to evaluate adsorptivity of functionalized SiO2 on the basis of per effective functional group, which may repair deficiency of conventional assessment method that calculated on the basis of per unit mass. Further, adsorption mechanism of these functionalized SiO2 were identified and uncovered by experimental and theoretical studies. This work not only develops an efficient adsorbent for heavy metal remediation but also provides a valuable insight for evaluation and design of novel SiO2-based materials.
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Affiliation(s)
- Penghui Shao
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, PR China
| | - Dahao Liang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, PR China
| | - Liming Yang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, PR China
| | - Hui Shi
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, PR China
| | - Zhensheng Xiong
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, PR China
| | - Lin Ding
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, PR China
| | - Xiaocui Yin
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, PR China
| | - Kai Zhang
- School of Space and Environment, Beihang University, Beijing, 100191, PR China
| | - Xubiao Luo
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, PR China.
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Afshariazar F, Morsali A, Wang J, Junk PC. Highest and Fastest Removal Rate of Pb II Ions through Rational Functionalized Decoration of a Metal-Organic Framework Cavity. Chemistry 2020; 26:1355-1362. [PMID: 31756257 DOI: 10.1002/chem.201904436] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 11/19/2019] [Indexed: 11/06/2022]
Abstract
To overcome the challenge of developing a multipurpose adsorbent for effective removal of toxic and carcinogenic PbII ions from aqueous solutions, a made-for-purpose functional group (N1 ,N2 -di(pyridine-4-yl)oxalamide) was rationally designed and incorporated into the cavities of a Zn metal-organic framework (MOF), namely, TMU-56. Large enough pore size along with high densities of strong metal chelating sites lead not only to the highest uptake capacity for PbII ions, but also the fastest removal rate that has ever been reported for functionalized MOFs, occurring in just 20 s. Moreover, high concentrations of lead ions favor the ion exchange reaction, resulting in a high degree of metal exchange. In addition, TMU-56 can be a practical adsorbent because of its notable performance in the simultaneous removal of several toxic and carcinogenic heavy metals from wastewater, which has rare precedence.
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Affiliation(s)
- Farzaneh Afshariazar
- Department of Chemistry, Faculty of Science, Tarbiat Modares University, Jalal AleAhmad, P.O. Box 14115-175, Tehran, Iran
| | - Ali Morsali
- Department of Chemistry, Faculty of Science, Tarbiat Modares University, Jalal AleAhmad, P.O. Box 14115-175, Tehran, Iran
| | - Jun Wang
- College of Science & Engineering, James Cook University, Townsville Old, 4811, Australia
| | - Peter C Junk
- College of Science & Engineering, James Cook University, Townsville Old, 4811, Australia
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18
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Feng T, Xu J, Yu C, Cheng K, Wu Y, Wang Y, Li F. Graphene oxide wrapped melamine sponge as an efficient and recoverable adsorbent for Pb(II) removal from fly ash leachate. JOURNAL OF HAZARDOUS MATERIALS 2019; 367:26-34. [PMID: 30584987 DOI: 10.1016/j.jhazmat.2018.12.053] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Revised: 12/03/2018] [Accepted: 12/15/2018] [Indexed: 06/09/2023]
Abstract
Lead is one of the most toxic elements, which has been well recognized for its negative effect on the environment and human beings. But, preliminary methods such as chemical precipitation, membrane separation etc. and commonly used adsorbents based on adsorption technology were found to be expensive and inefficient. In this study, we modify the surface of melamine sponge (MS) with polydopamine (PDA) and then coat with glutathione/graphene oxide (GG) as the adsorbent (MS@GG) to removal Pb(II) from aqueous solutions and fly ash leachate. The maximum adsorption capacity of MS@GG was calculated to be 349.7 mg Pb/g GG, and the reaction reached equilibrium in 30 min which were both higher than raw GG material and most previously reported adsorbents due to active sites on the surface of GG, as well as the unique macroporous and hydrophilic structure of MS. Meanwhile, based on its easy separation, by using HCl as the regeneration agent, the materials revealed good reproducibility. In addition, when MS@GG was applied for the removal of Pb(II) in fly ash leachate, the removal efficiency reached up to 99.24%, indicating that the novel MS@GG was the promising candidate adsorbent material for Pb(II) removal.
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Affiliation(s)
- Tao Feng
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China
| | - Jinjin Xu
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China
| | - Chaofan Yu
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China
| | - Kuan Cheng
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China
| | - Ye Wu
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China
| | - Ying Wang
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China.
| | - Fengting Li
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China
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19
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Li K, Li JJ, Zhao N, Xie TT, Di B, Xu LL. Thioether-based recyclable metal–organic frameworks for selective and efficient removal of Hg2+ from water. Dalton Trans 2019; 48:17800-17809. [DOI: 10.1039/c9dt03714d] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Hg2+ is highly toxic and hazardous and widely found in polluted water.
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Affiliation(s)
- Kan Li
- Jiangsu Key Laboratory of Drug Design and Optimization
- China Pharmaceutical University
- Nanjing 210009
- China
| | - Jing-jing Li
- Jiangsu Key Laboratory of Drug Design and Optimization
- China Pharmaceutical University
- Nanjing 210009
- China
| | - Ni Zhao
- Jiangsu Key Laboratory of Drug Design and Optimization
- China Pharmaceutical University
- Nanjing 210009
- China
| | - Ting-ting Xie
- Jiangsu Key Laboratory of Drug Design and Optimization
- China Pharmaceutical University
- Nanjing 210009
- China
| | - Bin Di
- Jiangsu Key Laboratory of Drug Design and Optimization
- China Pharmaceutical University
- Nanjing 210009
- China
- Key Laboratory of Drug Quality Control and Pharmacovigilance
| | - Li-li Xu
- Jiangsu Key Laboratory of Drug Design and Optimization
- China Pharmaceutical University
- Nanjing 210009
- China
- Key Laboratory of Drug Quality Control and Pharmacovigilance
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20
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Guan Q, Gao K, Ning P, Miao R, He L. Efficient removal of low-concentration Cr(vi) from aqueous solution by 4A/HACC particles. NEW J CHEM 2019. [DOI: 10.1039/c9nj04176a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new cationic surface-modified 4A zeolite for adsorbing trace chromium in aqueous solution was successfully synthesized.
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Affiliation(s)
- Qingqing Guan
- Faculty of Environmental Science and Engineering
- Kunming University of Science and Technology
- Kunming
- China
| | - Kexuan Gao
- Faculty of Environmental Science and Engineering
- Kunming University of Science and Technology
- Kunming
- China
| | - Ping Ning
- Faculty of Environmental Science and Engineering
- Kunming University of Science and Technology
- Kunming
- China
| | - Rongrong Miao
- Faculty of Environmental Science and Engineering
- Kunming University of Science and Technology
- Kunming
- China
| | - Liang He
- BiomassChem Group
- Faculty of Chemical Engineering
- Kunming University of Science and Technology
- Kunming
- China
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21
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Hou L, Hu BX, He M, Xu X, Zhang W. Effect of intermittent operation model on the function of soil infiltration system. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:9615-9625. [PMID: 29363031 DOI: 10.1007/s11356-018-1238-5] [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: 04/07/2017] [Accepted: 01/05/2018] [Indexed: 06/07/2023]
Abstract
To enhance denitrification in a process of solute infiltration through a soil, a two-section mixed-medium soil infiltration system (TMSIS) for urban non-point pollution was developed. The artificial aerobic respiration and nitrification took place in the upper aerobic section (AES), while grass powders and sawdust were mixed in the bottom anaerobic section (ANS) to supply organic carbon source for denitrification bacteria, and the reduction was increased by iron addition in the ANS. Measured resident concentrations from the bottom of each ANS column were assumed to represent mean values averaged over the column cross-sectional area. The TMSIS with hydraulic loading rates (HLR) of 0.32, 0.24, and 0.16 m3 m-2 day-1 and with wetting-drying ratio (RWD) of 1.0 showed remarkable removal efficiencies for chemical oxygen demand (COD), NH4+-N, and TP, respectively. The hydraulic loading rate of 0.32 m3 m-2 day-1 was selected as the optimal HLR due to the high contaminated runoff treatment efficiency. When RWD was 1.0, 0.5, or 0.2 with hydraulic loading rate of 0.32 m3 m-2 day-1, the TMSIS could treat synthetic urban runoff contaminants very well. The corresponding effluent water met the China's national quality standard for class V surface water. The wetting-drying ratio of 0.5 with hydraulic loading of 0.32 m3 m-2 day-1 was selected as the optimal operation conditions for the TMSIS. Aerobic respiration and nitrification mainly took place in the upper AES, in which most of the COD and the NH4+-N were removed. Mixed sawdust and grass powders used as a carbon source and heterotrophic denitrification were put at the bottom of the ANS. The developed TMSIS has the potential to be applied for urban non-point pollution removal.
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Affiliation(s)
- Lizhu Hou
- School of Water Resources and Environment, China University of Geosciences (Beijing), No. 29 Xueyuan Road, Haidian District, Beijing, 100083, China
- MOE Key Laboratory of Groundwater Circulation and Evolution, China University of Geosciences (Beijing), No. 29 Xueyuan Road, Haidian District, Beijing, 100083, China
| | - Bill X Hu
- School of Water Resources and Environment, China University of Geosciences (Beijing), No. 29 Xueyuan Road, Haidian District, Beijing, 100083, China.
- MOE Key Laboratory of Groundwater Circulation and Evolution, China University of Geosciences (Beijing), No. 29 Xueyuan Road, Haidian District, Beijing, 100083, China.
- Institute of Groundwater and Earth Science, Jinan University, 601 W. Huangpu Ave, Guangzhou, Guangdong, 510632, China.
| | - Mengmeng He
- School of Water Resources and Environment, China University of Geosciences (Beijing), No. 29 Xueyuan Road, Haidian District, Beijing, 100083, China
| | - Xue Xu
- School of Water Resources and Environment, China University of Geosciences (Beijing), No. 29 Xueyuan Road, Haidian District, Beijing, 100083, China
| | - Wenjing Zhang
- Water Authority of Shijingshan District, Beijing, 100043, China
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22
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A versatile MOF-based trap for heavy metal ion capture and dispersion. Nat Commun 2018; 9:187. [PMID: 29335517 PMCID: PMC5768720 DOI: 10.1038/s41467-017-02600-2] [Citation(s) in RCA: 340] [Impact Index Per Article: 48.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Accepted: 12/12/2017] [Indexed: 11/08/2022] Open
Abstract
Current technologies for removing heavy metal ions are typically metal ion specific. Herein we report the development of a broad-spectrum heavy metal ion trap by incorporation of ethylenediaminetetraacetic acid into a robust metal-organic framework. The capture experiments for a total of 22 heavy metal ions, covering hard, soft, and borderline Lewis metal ions, show that the trap is very effective, with removal efficiencies of >99% for single-component adsorption, multi-component adsorption, or in breakthrough processes. The material can also serve as a host for metal ion loading with arbitrary selections of metal ion amounts/types with a controllable uptake ratio to prepare well-dispersed single or multiple metal catalysts. This is supported by the excellent performance of the prepared Pd2+-loaded composite toward the Suzuki coupling reaction. This work proposes a versatile heavy metal ion trap that may find applications in the fields of separation and catalysis.
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23
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R. S, A. P, Balakrishna GR, M. S. J. La activated high surface area titania float for the adsorption of Pb(ii) from aqueous media. NEW J CHEM 2018. [DOI: 10.1039/c7nj03358c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Smaller particle size with higher surface area La-TiO2 fabricated float depicts enhanced adsorption of hazardous heavy metal ion Pb2+, present in the aqueous media and the float makes the process easy and reusable.
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Affiliation(s)
- Shwetharani R.
- Centre for Nano and Material Sciences
- Jain University
- Jain Global Campus
- Bangalore-562112
- India
| | - Poojashree A.
- Centre for Nano and Material Sciences
- Jain University
- Jain Global Campus
- Bangalore-562112
- India
| | - Geetha R. Balakrishna
- Centre for Nano and Material Sciences
- Jain University
- Jain Global Campus
- Bangalore-562112
- India
| | - Jyothi M. S.
- Centre for Nano and Material Sciences
- Jain University
- Jain Global Campus
- Bangalore-562112
- India
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24
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Li D, Li Q, Mao D, Bai N, Dong H. A versatile bio-based material for efficiently removing toxic dyes, heavy metal ions and emulsified oil droplets from water simultaneously. BIORESOURCE TECHNOLOGY 2017; 245:649-655. [PMID: 28917099 DOI: 10.1016/j.biortech.2017.09.016] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 09/02/2017] [Accepted: 09/04/2017] [Indexed: 06/07/2023]
Abstract
Developing versatile materials for effective water purification is significant for environment and water source protection. Herein, a versatile bio-based material (CH-PAA-T) was reported by simple thermal cross-linking chitosan and polyacrylic acid which exhibits excellent performances for removing insoluble oil, soluble toxic dyes and heavy metal ions from water, simultaneously. The adsorption capacities are 990.1mgg-1 for methylene blue (MB) and 135.9mgg-1 for Cu2+, which are higher than most of present advanced absorbents. The adsorption towards organic dyes possesses high selectivity which makes CH-PAA-T be able to efficiently separate dye mixtures. The stable superoleophobicity under water endows CH-PAA-T good performance to separate toluene-in-water emulsion stabilized by Tween 80. Moreover, CH-PAA-T can be recycled for 10 times with negligible reduction of efficiency. Such versatile bio-based material is a potential candidate for water purification.
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Affiliation(s)
- Daikun Li
- School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road NO. 2, Chongqing 400715, PR China
| | - Qing Li
- School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road NO. 2, Chongqing 400715, PR China.
| | - Daoyong Mao
- School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road NO. 2, Chongqing 400715, PR China
| | - Ningning Bai
- School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road NO. 2, Chongqing 400715, PR China
| | - Hongzhou Dong
- School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road NO. 2, Chongqing 400715, PR China
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25
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Synthesis of novel resin containing carbamothiolylimidamide group and application for Cr(VI) removal. Polym Bull (Berl) 2017. [DOI: 10.1007/s00289-017-2068-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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