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Dong Y, Ghasemzadeh M, Khorsandi Z, Sheibani R, Nasrollahzadeh M. Starch-based hydrogels for environmental applications: A review. Int J Biol Macromol 2024; 269:131956. [PMID: 38692526 DOI: 10.1016/j.ijbiomac.2024.131956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 04/19/2024] [Accepted: 04/27/2024] [Indexed: 05/03/2024]
Abstract
Water sources have become extremely scarce and contaminated by organic and inorganic industrial and agricultural pollutants as well as household wastes. Poisoning water resources by dyes and metals is a problem because contaminated water can leak into subsurface and surface sources, causing serious contamination and health problems. Therefore, developing wastewater treatment technologies is valuable. Today, hydrogels have attracted considerable attention owing to their broad applications. Hydrogels are polymeric network compositions with significant water-imbibing capacity. Hydrogels have potential applications in diverse fields such as biomedical, personal care products, pharmaceuticals, cosmetics, and biosensors. They can be prepared by using natural (biopolymers) and synthetic polymers. Synthetic polymer-based hydrogels obtained from petrochemicals are not environmentally benign; thus, abundant plant-based polysaccharides are found as more suitable compounds for making biodegradable hydrogels. Polysaccharides with many advantages such as non-toxicity, biodegradability, availability, inexpensiveness, etc. are widely employed for the preparation of environmentally friendly hydrogels. Polysaccharides-based hydrogels containing chitin, chitosan, gum, starch (St), etc. are employed to remove pollutants, metals, and dyes. Among these, St has attracted a lot of attention. St can be mixed with other compounds to make hydrogels, which remove dyes and metal ions to variable degrees of efficiency. Although St has numerous advantages, it suffers from drawbacks such as low stability, low water solubility, and fast degradability in water which limit its application as an environmental adsorbent. As an effective way to overcome these weaknesses, various modification approaches to form starch-based hydrogels (SBHs) employing different compounds have been reported. The preparation methods and applications of SBH adsorbents in organic dyes, hazardous materials, and toxic ions elimination from water resources have been comprehensively discussed in this review.
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Affiliation(s)
- Yahao Dong
- Henan Key Laboratory of Green Chemistry, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, PR China.
| | | | - Zahra Khorsandi
- Department of Chemistry, Faculty of Science, University of Qom, Qom 37185-359, Iran
| | - Reza Sheibani
- Amirkabir University of Technology-Mahshahr Campus, University St., Nahiyeh san'ati, Mahshahr, Khouzestan, Iran
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Nguyen TK, Li X, Ren L, Huang Y, Zhou JL. Polystyrene and low-density polyethylene pellets are less effective in arsenic adsorption than uncontaminated river sediment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:95810-95827. [PMID: 37558920 PMCID: PMC10482778 DOI: 10.1007/s11356-023-29218-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 08/03/2023] [Indexed: 08/11/2023]
Abstract
The adsorption process of inorganic arsenic (As) plays an important role in its mobility, bioavailability, and toxicity in the river environment. In this work, the adsorption of dissolved arsenite (As(III)) and arsenate (As(V)) by microplastics (MPs) pellets (polystyrene (PS) and low-density polyethylene (LDPE)), river sediment, and their mixture were investigated to assess the adsorption affinities and mechanism. The adsorption kinetics showed slow and mild rising zones from the natural behavior of the chemical adsorption. The results indicated that both MP characteristics and water properties played a significant role in the adsorption behavior of inorganic As species. The As adsorption equilibrium was modeled well by both Langmuir and Freundlich isotherms and partly fitted with the Sips model suggesting that both mono-layer and multi-layer adsorption occurred during adsorption The spontaneous adsorption process for both As(III) and As(V) was evidenced by the adsorption thermodynamics. The maximum adsorption capacities of As(III) and As(V) reached 143.3 mg/kg and 109.8 mg/kg on PS in deionized water, which were higher than those on sediment-PS mixture (119.3 mg/kg, 99.2 mg/kg), which were all lower than on sediment alone (263.3 mg/kg, 398.7 mg/kg). The Fourier transform infrared spectroscopy analysis identified that As(III) and As(V) interaction with sediment surface functional groups was the main adsorption mechanism from surface complexation and coordination. Two functional groups of polystyrene (-NH2, -OH) were mainly involved in the adsorption of inorganic As species on PS, while -COO- and -OH functional groups contributed to the adsorption mechanism of inorganic As species on LDPE. The findings provide valuable insight on the adsorption behavior and mechanisms of As(III) and As(V) in river systems in the presence of MPs particles. Both PS and LDPE were shown to be less effective than river sediment in the adsorption of As species from water, which provides a different perspective in understanding the scale of MPs impact in pollutant transport in the aquatic environment.
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Affiliation(s)
- Thanh Kien Nguyen
- Centre for Green Technology, School of Civil and Environmental Engineering, University of Technology Sydney, 15 Broadway, Sydney, NSW, 2007, Australia
- Water Resources Division, Department of Environment, Parks and Water Security, Darwin, NT, Australia
| | - Xiaowei Li
- School of Environmental and Chemical Engineering, Ministry of Education, Organic Compound Pollution Control Engineering, Shanghai University, Shanghai, 200444, People's Republic of China
| | - Lei Ren
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, 524088, People's Republic of China
| | - Yuhan Huang
- Centre for Green Technology, School of Civil and Environmental Engineering, University of Technology Sydney, 15 Broadway, Sydney, NSW, 2007, Australia
| | - John L Zhou
- Centre for Green Technology, School of Civil and Environmental Engineering, University of Technology Sydney, 15 Broadway, Sydney, NSW, 2007, Australia.
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Ahmaruzzaman M, Roy P, Bonilla-Petriciolet A, Badawi M, Ganachari SV, Shetti NP, Aminabhavi TM. Polymeric hydrogels-based materials for wastewater treatment. CHEMOSPHERE 2023; 331:138743. [PMID: 37105310 DOI: 10.1016/j.chemosphere.2023.138743] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 04/18/2023] [Accepted: 04/19/2023] [Indexed: 05/19/2023]
Abstract
Low-cost and reliable wastewater treatment is a relevant issue worldwide to reduce the concentration of environmental pollutants. Industrial effluents containing dyes, heavy metals, and other inorganic and organic compounds can pollute water resources; therefore, novel technologies are required to mitigate and control their release into the environment. Adsorption is one of the simplest methods for treating contaminated water in which a wide spectrum of adsorbents can be used to remove emerging compounds. Hydrogels are interesting materials with high adsorption capacities that can be synthesized via green routes. These adsorbents are promising for large-scale industrial wastewater treatment applications; however, gaps still exist in achieving sustainable commercial implementation. This review focuses on the discussion and analysis of preparation, characterization, and adsorption properties of hydrogels for water purification. The advantages of these polymeric materials for water treatment were analyzed, including their performance in the removal of different organic and inorganic contaminants. Recent advances in the functionalization of hydrogels and the synthesis of novel composites have also been described. The adsorption capacities of hydrogel-based adsorbents are higher than 500 mg/g for different organic and inorganic pollutants, and can reach values of up to >2000 mg/g for organic compounds, significantly outperforming other materials reported for water cleaning. The main interactions involved in the adsorption of water pollutants using hydrogel-based adsorbents were described and explained to allow the interpretation of their removal mechanisms. The current challenges in the implementation of hydrogels for water purification in real-life operations are also highlighted. This review provides an updated picture of hydrogels as interesting materials to address water depollution worldwide.
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Affiliation(s)
- Md Ahmaruzzaman
- Department of Chemistry, National Institute of Technology Silchar, 788010, Assam, India.
| | - Prerona Roy
- Department of Chemistry, National Institute of Technology Silchar, 788010, Assam, India
| | | | - Michael Badawi
- Laboratoire de Physique et Chimie Théoriques UMR CNRS 7019, Université de Lorraine, Nancy, France
| | - Sharanabasava V Ganachari
- Center for Energy and Environment, School of Advanced Sciences, KLE Technological University, Hubballi, 580 031, India
| | - Nagaraj P Shetti
- Center for Energy and Environment, School of Advanced Sciences, KLE Technological University, Hubballi, 580 031, India
| | - Tejraj M Aminabhavi
- Center for Energy and Environment, School of Advanced Sciences, KLE Technological University, Hubballi, 580 031, India.
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Khoo PS, Ilyas RA, Uda MNA, Hassan SA, Nordin AH, Norfarhana AS, Ab Hamid NH, Rani MSA, Abral H, Norrrahim MNF, Knight VF, Lee CL, Rafiqah SA. Starch-Based Polymer Materials as Advanced Adsorbents for Sustainable Water Treatment: Current Status, Challenges, and Future Perspectives. Polymers (Basel) 2023; 15:3114. [PMID: 37514503 PMCID: PMC10385024 DOI: 10.3390/polym15143114] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 07/17/2023] [Accepted: 07/18/2023] [Indexed: 07/30/2023] Open
Abstract
Over the past three decades, chemical and biological water contamination has become a major concern, particularly in the industrialized world. Heavy metals, aromatic compounds, and dyes are among the harmful substances that contribute to water pollution, which jeopardies the human health. For this reason, it is of the utmost importance to locate methods for the cleanup of wastewater that are not genuinely effective. Owing to its non-toxicity, biodegradability, and biocompatibility, starch is a naturally occurring polysaccharide that scientists are looking into as a possible environmentally friendly material for sustainable water remediation. Starch could exhibit significant adsorption capabilities towards pollutants with the substitution of amide, amino, carboxyl, and other functional groups for hydroxyl groups. Starch derivatives may effectively remove contaminants such as oil, organic solvents, pesticides, heavy metals, dyes, and pharmaceutical pollutants by employing adsorption techniques at a rate greater than 90%. The maximal adsorption capacities of starch-based adsorbents for oil and organic solvents, pesticides, heavy metal ions, dyes, and pharmaceuticals are 13,000, 66, 2000, 25,000, and 782 mg/g, respectively. Although starch-based adsorbents have demonstrated a promising future for environmental wastewater treatment, additional research is required to optimize the technique before the starch-based adsorbent can be used in large-scale in situ wastewater treatment.
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Affiliation(s)
- Pui San Khoo
- Centre for Advanced Composite Materials, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia
| | - R A Ilyas
- Centre for Advanced Composite Materials, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia
- Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia
- Institute of Tropical Forest and Forest Products (INTROP), Universiti Putra Malaysia, Serdang 43400 UPM, Selangor, Malaysia
- Centre of Excellence for Biomass Utilization, Universiti Malaysia Perlis, Arau 02600, Perlis, Malaysia
| | - M N A Uda
- Centre of Excellence for Biomass Utilization, Universiti Malaysia Perlis, Arau 02600, Perlis, Malaysia
- Faculty of Mechanical Engineering and Technology, Universiti Malaysia Perlis, Arau 02600, Perlis, Malaysia
| | - Shukur Abu Hassan
- Centre for Advanced Composite Materials, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia
- Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia
| | - A H Nordin
- Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia
| | - A S Norfarhana
- Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia
| | - N H Ab Hamid
- Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia
| | - M S A Rani
- Institute of Tropical Forest and Forest Products (INTROP), Universiti Putra Malaysia, Serdang 43400 UPM, Selangor, Malaysia
- Department of Physics, Faculty of Science, Universiti Putra Malaysia, Serdang 43400 UPM, Selangor, Malaysia
| | - Hairul Abral
- Laboratory of Nanoscience and Technology, Department of Mechanical Engineering, Andalas University, Padang 25163, Indonesia
- Research Collaboration Center for Nanocellulose, BRIN-Andalas University, Padang 25163, Indonesia
| | - M N F Norrrahim
- Research Centre for Chemical Defence, Universiti Pertahanan Nasional Malaysia, Kem Perdana Sungai Besi, Kuala Lumpur 57000, Malaysia
| | - V F Knight
- Research Centre for Chemical Defence, Universiti Pertahanan Nasional Malaysia, Kem Perdana Sungai Besi, Kuala Lumpur 57000, Malaysia
| | - Chuan Li Lee
- Institute of Tropical Forest and Forest Products (INTROP), Universiti Putra Malaysia, Serdang 43400 UPM, Selangor, Malaysia
| | - S Ayu Rafiqah
- Institute of Tropical Forest and Forest Products (INTROP), Universiti Putra Malaysia, Serdang 43400 UPM, Selangor, Malaysia
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Zhou Z, Zhang C, Xi M, Ma H, Jia H. Multi-scale modeling of natural organic matter-heavy metal cations interactions: Aggregation and stabilization mechanisms. WATER RESEARCH 2023; 238:120007. [PMID: 37121201 DOI: 10.1016/j.watres.2023.120007] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 04/24/2023] [Accepted: 04/25/2023] [Indexed: 05/17/2023]
Abstract
Interaction between natural organic matters (NOM) and heavy metal cations in aqueous environment are of great significance for maintaining stability of organic carbon and restraining transport of heavy metal contaminants in (bio)geochemical processes. We systematically explore the aggregation process and complexation between NOM and heavy metal cations (Ag+, Cd2+, Pb2+, Zn2+, Eu3+) under different pH condition by molecular dynamics (MD) simulations, umbrella sampling method, and quantum chemistry calculations. The character of molecular structures NOM-heavy metal complexes and association are quantified. In acidic pH condition, aggregation proceeds via H-bonding and π-π interactions between NOM fragments. In neutral condition, Ag+, Cd2+, Pb2+, and Eu3+ can form inner-sphere complexes with the surface carboxylic groups and therefore reduce intermolecular charge repulsion, eventually leading to NOM aggregation, and it shows that even without direct binding, the outer-sphere adsorbed Zn2+ can also result in the formation of NOM assemble through H-bonding. Consequently, these heavy metals are capable of promoting NOM aggregation regardless of the complexing ways. Complexing free energy calculations characterized the dynamic processes of cations binding to the carboxylic groups of NOM fragment and the related energy landscape. This study provides quantitative insights for understanding the environmental processes of heavy metals and cycle of C in aquatic ecosystem, and contributes to developing environment-friendly strategies for controlling heavy metal contaminants.
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Affiliation(s)
- Zhiyu Zhou
- College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaanxi, 712100, P.R. China
| | - Chi Zhang
- College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaanxi, 712100, P.R. China; Key Laboratory of Low-Carbon Green Agriculture in Northwestern China, Ministry of Agriculture and Rural Affairs, Yangling, Shaanxi, 712100, P.R. China.
| | - Mengning Xi
- College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaanxi, 712100, P.R. China
| | - Haonan Ma
- College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaanxi, 712100, P.R. China
| | - Hanzhong Jia
- College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaanxi, 712100, P.R. China; Key Laboratory of Low-Carbon Green Agriculture in Northwestern China, Ministry of Agriculture and Rural Affairs, Yangling, Shaanxi, 712100, P.R. China.
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6
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Hu C, Wei H, Hua B, Zhang Y, Wang G, Guo T. Facile fabrication of a broad-spectrum starch/poly(α-l-lysine) hydrogel adsorbent with thermal/pH-sensitive IPN structure through simultaneous dual-click strategy. Carbohydr Polym 2023; 309:120672. [PMID: 36906358 DOI: 10.1016/j.carbpol.2023.120672] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 01/17/2023] [Accepted: 02/03/2023] [Indexed: 02/11/2023]
Abstract
A thermal/pH-sensitive interpenetrating network (IPN) hydrogel was prepared facilely from starch and poly(α-l-lysine) through amino-anhydride and azide-alkyne double-click reactions in one pot. The synthesized polymers and hydrogels were systematically characterized using different analytical techniques such as Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR), scanning electron microscope (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and rheometer. The preparation conditions of the IPN hydrogel were optimized via one-factor experiments. Experimental results indicated the IPN hydrogel possessed pH and temperature sensitivity. Effect of different parameters (pH, contact time, adsorbent dosage, initial concentration, ionic strength, and temperature) on adsorption behavior were investigated in monocomponent system with cationic methylene blue (MB) and anionic Eosin Y (EY) as model pollutants. The results indicated that the adsorption process of the IPN hydrogel for MB and EY followed pseudo-second-order kinetics. The adsorption data for MB and EY fitted well with the Langmuir isotherm model, indicating monolayer chemisorption. The good adsorption performance was due to various active functional groups (-COOH, -OH, -NH2, etc.) in the IPN hydrogel. The strategy described here opens up a new way for preparing IPN hydrogel. The as-prepared hydrogel exhibits potential application and bright prospects as an adsorbent in wastewater treatment.
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Affiliation(s)
- Chunwang Hu
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, PR China
| | - Hongliang Wei
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, PR China.
| | - Bingyan Hua
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, PR China
| | - Yaqi Zhang
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, PR China
| | - Gang Wang
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, PR China
| | - Tao Guo
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, PR China
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Gao X, Huang X, Lin J, Yu C, Tang C, Huang Y. Porous boron nitride nanofibers enhanced sodium acrylate and acrylamide copolymer hydrogels for effective adsorption of Pb 2. SOFT MATTER 2023; 19:973-982. [PMID: 36636922 DOI: 10.1039/d2sm01341j] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
A new composite hydrogel adsorbent for adsorption of Pb2+ has been prepared by combining porous boron nitride nanofibers (BNNFs) and the acrylamide and sodium acrylate copolymer (P(AANa-co-AM)) via a chemical crosslinking method. Porous BNNFs with abundant hydroxyl functional groups can form hydrogen bond interactions with carboxyl and amino functional groups of the copolymer in the composite hydrogel and carry and dissipate forces for the composite hydrogels. So the mechanical performances of the copolymer hydrogels can be effectively improved, which is very valuable for the practical application of the composite hydrogel to remove Pb2+ from waste water. The thermal stability and swelling performance of the pure copolymer hydrogels were also greatly improved. This is not only because of the strong hydrogen bond interactions but also the good thermal stability and flexibility of BNNFs. The composite hydrogel adsorbent shows superior adsorption capacity for Pb2+ (490.2 mg g-1) to most of the reported hydrogel adsorbents. The chemisorption dominates the whole adsorption process according to the pseudo-second-order kinetic and the Langmuir models. The composite hydrogel adsorbent also shows good reusability. Therefore, we believe that the prepared composite hydrogels will play an important role in removing Pb2+ from wastewater.
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Affiliation(s)
- Xiangqian Gao
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, P. R. China
- Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin 300130, P. R. China.
| | - Xindi Huang
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, P. R. China
- Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin 300130, P. R. China.
| | - Jing Lin
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, P. R. China
- Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin 300130, P. R. China.
| | - Chao Yu
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, P. R. China
- Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin 300130, P. R. China.
| | - Chengchun Tang
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, P. R. China
- Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin 300130, P. R. China.
| | - Yang Huang
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, P. R. China
- Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin 300130, P. R. China.
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8
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Focus on the removal of lead and cadmium ions from aqueous solutions using starch derivatives: A review. Carbohydr Polym 2022; 290:119463. [DOI: 10.1016/j.carbpol.2022.119463] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 03/31/2022] [Accepted: 04/02/2022] [Indexed: 11/20/2022]
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Abstract
Due to rapid industrialization, urbanization, and surge in modern human activities, water contamination is a major threat to humanity globally. Contaminants ranging from organic compounds, dyes, to inorganic heavy metals have been of major concern in recent years. This necessitates the development of affordable water remediation technologies to improve water quality. There is a growing interest in nanotechnology recently because of its application in eco-friendly, cost-effective, and durable material production. This study presents a review of recent nanocomposite technologies based on clay, applied in the removal of heavy metals from wastewater, and highlights the shortcomings of existing methods. Recently published reports, articles, and papers on clay-based nanocomposites for the removal of heavy metals have been reviewed. Currently, the most common methods utilized in the removal of heavy metals are reverse osmosis, electrodialysis, ion exchange, and activated carbon. These methods, however, suffer major shortcomings such as inefficiency when trace amounts of contaminant are involved, uneconomical costs of operation and maintenance, and production of contaminated sludge. The abundance of clay on the Earth’s surface and the ease of modification to improve adsorption capabilities have made it a viable candidate for the synthesis of nanocomposites. Organoclay nanocomposites such as polyacrylamide-bentonite, polyaniline-montmorillonite, and β-cyclodextrin-bentonite have been synthesized for the selective removal of various heavy metals such as Cu2+, Co2+, among others. Bacterial clay nanocomposites such as E. coli kaolinite nanocomposites have also been successfully synthesized and applied in the removal of heavy metals. Low-cost nanocomposites of clay using biopolymers like chitosan and cellulose are especially in demand due to the cumulative abundance of these materials in the environment. A comparative analysis of different synthetic processes to efficiently remove heavy metal contaminants with clay-based nanocomposite adsorbents is made.
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Sarkar B, Dissanayake PD, Bolan NS, Dar JY, Kumar M, Haque MN, Mukhopadhyay R, Ramanayaka S, Biswas JK, Tsang DCW, Rinklebe J, Ok YS. Challenges and opportunities in sustainable management of microplastics and nanoplastics in the environment. ENVIRONMENTAL RESEARCH 2022; 207:112179. [PMID: 34624271 DOI: 10.1016/j.envres.2021.112179] [Citation(s) in RCA: 59] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 10/01/2021] [Accepted: 10/02/2021] [Indexed: 05/06/2023]
Abstract
The accumulation of microplastics (MPs) and nanoplastics (NPs) in terrestrial and aquatic ecosystems has raised concerns because of their adverse effects on ecosystem functions and human health. Plastic waste management has become a universal problem in recent years. Hence, sustainable plastic waste management techniques are vital for achieving the United Nations Sustainable Development Goals. Although many reviews have focused on the occurrence and impact of micro- and nanoplastics (MNPs), there has been limited focus on the management of MNPs. This review first summarizes the ecotoxicological impacts of plastic waste sources and issues related to the sustainable management of MNPs in the environment. This paper then critically evaluates possible approaches for incorporating plastics into the circular economy in order to cope with the problem of plastics. Pollution associated with MNPs can be tackled through source reduction, incorporation of plastics into the circular economy, and suitable waste management. Appropriate infrastructure development, waste valorization, and economically sound plastic waste management techniques and viable alternatives are essential for reducing MNPs in the environment. Policymakers must pay more attention to this critical issue and implement appropriate environmental regulations to achieve environmental sustainability.
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Affiliation(s)
- Binoy Sarkar
- Lancaster Environment Centre, Lancaster University, Lancaster, LA1 4YQ, UK
| | - Pavani Dulanja Dissanayake
- Korea Biochar Research Center, APRU Sustainable Waste Management Program & Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea; Soils and Plant Nutrition Division, Coconut Research Institute, Lunuwila 61150, Sri Lanka
| | - Nanthi S Bolan
- School of Agriculture and Environment, The University of Western Australia, Perth, Western Australia, 6001, Australia; The UWA Institute of Agriculture, The University of Western Australia, Perth, Western Australia, 6001, Australia; College of Engineering, Science and Environment, University of Newcastle, Callaghan, New South Wales, 2308, Australia
| | - Jaffer Yousuf Dar
- Division of Irrigation and Drainage Engineering, ICAR-Central Soil Salinity Research Institute, Karnal, 132001, India
| | - Manish Kumar
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China; CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), Nehru Marg, Nagpur, 440020, Maharashtra, India
| | - Md Niamul Haque
- Korea Biochar Research Center, APRU Sustainable Waste Management Program & Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea; Department of Marine Science, College of Natural Sciences & Research Institute of Basic Sciences, Incheon National University, Incheon, 22012, Republic of Korea
| | - Raj Mukhopadhyay
- Division of Irrigation and Drainage Engineering, ICAR-Central Soil Salinity Research Institute, Karnal, 132001, India
| | - Sammani Ramanayaka
- Lancaster Environment Centre, Lancaster University, Lancaster, LA1 4YQ, UK
| | - Jayanta Kumar Biswas
- Department of Ecological Studies & International Centre for Ecological Engineering, University of Kalyani, Kalyani, Nadia, 741235, West Bengal, India
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Jörg Rinklebe
- University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste Management, Laboratory of Soil- and Groundwater-Management, Pauluskirchstraße 7, 42285, Wuppertal, Germany; Department of Environment, Energy and Geoinformatics, Sejong University, 98 Gunja-Dong, Seoul, Republic of Korea.
| | - Yong Sik Ok
- Korea Biochar Research Center, APRU Sustainable Waste Management Program & Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea.
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Insight into the adsorption performance of novel kaolinite-cellulose/cobalt oxide nanocomposite as green adsorbent for liquid phase abatement of heavy metal ions: Modelling and mechanism. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.103925] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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12
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Torres FG, De-la-Torre GE. Synthesis, characteristics, and applications of modified starch nanoparticles: A review. Int J Biol Macromol 2022; 194:289-305. [PMID: 34863968 DOI: 10.1016/j.ijbiomac.2021.11.187] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 11/03/2021] [Accepted: 11/27/2021] [Indexed: 12/11/2022]
Abstract
Nowadays, starch nanoparticles (SNPs) are drawing attention to the scientific community due to their versatility and wide range of applications. Although several works have extensively addressed the SNP production routes, not much is discussed about the SNPs modification techniques, as well as the use of modified SNPs in typical and unconventional applications. Here, we focused on the SNP modification strategies and characteristics and performance of the resulting products, as well as their practical applications, while pointing out the main limitations and recommendations. We aim to guide researchers by identifying the next steps in this emerging line of research. SNPs esterification and oxidation are preferred chemical modifications, which result in changes in the functional groups. Moreover, additional polymers are incorporated into the SNP surface through copolymer grafting. Physical modification of starch has demonstrated similar changes in the functional groups without the need for toxic chemicals. Modified SNPs rendered differentiated properties, such as size, shape, crystallinity, hydrophobicity, and Zeta-potential. For multiple applications, tailoring the aforementioned properties is key to the performance of nanoparticle-based systems. However, the number of studies focusing on emerging applications is fairly limited, while their applications as drug delivery systems lack in vivo studies. The main challenges and prospects were discussed.
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Affiliation(s)
- Fernando G Torres
- Department of Mechanical Engineering, Pontificia Universidad Católica del Perú, Av. Universitaria 1801, Lima 15088, Peru.
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13
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Nizam El-Din HM, Ibraheim DM. Biological applications of nanocomposite hydrogels prepared by gamma-radiation copolymerization of acrylic acid (AAc) onto plasticized starch (PLST)/montmorillonite clay (MMT)/chitosan (CS) blends. Int J Biol Macromol 2021; 192:151-160. [PMID: 34619272 DOI: 10.1016/j.ijbiomac.2021.09.196] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 09/26/2021] [Accepted: 09/28/2021] [Indexed: 10/20/2022]
Abstract
In this work, nanocomposite hydrogels were prepared by gamma-radiation copolymerization of acrylic acid (AAc) onto plasticized starch (PLST)/montmorillonite clay (MMT)/chitosan (CS) blends. The effect of irradiation dose and MMT nanoparticle contents on the gel fraction and water absorption characters of PAAc-co-(PLST/MMT/CS) hydrogels was investigated. In addition, the structure-property behavior of the nanocomposite hydrogels was characterized by FTIR spectroscopy, thermogravimetric analysis (TGA) and X-ray diffraction (XRD). The study showed that the appropriate dose of gamma irradiation to achieve homogeneous nanocomposite hydrogels films and the highest absorption in water was 15 kGy, regardless of composition. The introduction of MMT up to 5-wt (%) improved the physical properties and enhanced the drug uptake-release characters. The effect of the nanocomposite hydrogels on skin wound healing were evaluated by rat models, taking sulfanilamide as a model drug. The profiles of rat skin after different time intervals up 21 days revealed that wounds treated with the copolymer hydrogels were healed faster which it may considered as a potential candidate for wound dressing materials.
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Affiliation(s)
- Horia M Nizam El-Din
- Department of Polymer Chemistry, National Center for Radiation Research and Technology, Atomic Energy Authority, Nasr City, Cairo, Egypt.
| | - Doaa M Ibraheim
- Department of Polymer Chemistry, National Center for Radiation Research and Technology, Atomic Energy Authority, Nasr City, Cairo, Egypt
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Amaraweera SM, Gunathilake C, Gunawardene OHP, Fernando NML, Wanninayaka DB, Dassanayake RS, Rajapaksha SM, Manamperi A, Fernando CAN, Kulatunga AK, Manipura A. Development of Starch-Based Materials Using Current Modification Techniques and Their Applications: A Review. Molecules 2021; 26:6880. [PMID: 34833972 PMCID: PMC8625705 DOI: 10.3390/molecules26226880] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 08/29/2021] [Accepted: 08/31/2021] [Indexed: 11/16/2022] Open
Abstract
Starch is one of the most common biodegradable polymers found in nature, and it is widely utilized in the food and beverage, bioplastic industry, paper industry, textile, and biofuel industries. Starch has received significant attention due to its environmental benignity, easy fabrication, relative abundance, non-toxicity, and biodegradability. However, native starch cannot be directly used due to its poor thermo-mechanical properties and higher water absorptivity. Therefore, native starch needs to be modified before its use. Major starch modification techniques include genetic, enzymatic, physical, and chemical. Among those, chemical modification techniques are widely employed in industries. This review presents comprehensive coverage of chemical starch modification techniques and genetic, enzymatic, and physical methods developed over the past few years. In addition, the current applications of chemically modified starch in the fields of packaging, adhesives, pharmaceuticals, agriculture, superabsorbent and wastewater treatment have also been discussed.
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Affiliation(s)
- Sumedha M. Amaraweera
- Department of Manufacturing and Industrial Engineering, Faculty of Engineering, University of Peradeniya, Peradeniya 20400, Sri Lanka; (S.M.A.); (N.M.L.F.); (A.K.K.)
| | - Chamila Gunathilake
- Department of Chemical and Process Engineering, Faculty of Engineering, University of Peradeniya, Peradeniya 20400, Sri Lanka; (O.H.P.G.); (D.B.W.); (A.M.)
- Department of Material & Nanoscience Technology, Faculty of Technology, Wayamba University of Sri Lanka, Kuliyapitiya 60200, Sri Lanka;
| | - Oneesha H. P. Gunawardene
- Department of Chemical and Process Engineering, Faculty of Engineering, University of Peradeniya, Peradeniya 20400, Sri Lanka; (O.H.P.G.); (D.B.W.); (A.M.)
| | - Nimasha M. L. Fernando
- Department of Manufacturing and Industrial Engineering, Faculty of Engineering, University of Peradeniya, Peradeniya 20400, Sri Lanka; (S.M.A.); (N.M.L.F.); (A.K.K.)
| | - Drashana B. Wanninayaka
- Department of Chemical and Process Engineering, Faculty of Engineering, University of Peradeniya, Peradeniya 20400, Sri Lanka; (O.H.P.G.); (D.B.W.); (A.M.)
| | - Rohan S. Dassanayake
- Department of Biosystems Technology, Faculty of Technology, University of Sri Jayewardenepura, Homagama 10200, Sri Lanka
| | - Suranga M. Rajapaksha
- Department of Materials and Mechanical Technology, Faculty of Technology, University of Sri Jayewardenepura, Homagama 10200, Sri Lanka;
| | - Asanga Manamperi
- Materials Engineering Department, California Polytechnic State University, San Luis Obispo, CA 93407, USA;
| | - Chakrawarthige A. N. Fernando
- Department of Material & Nanoscience Technology, Faculty of Technology, Wayamba University of Sri Lanka, Kuliyapitiya 60200, Sri Lanka;
| | - Asela K. Kulatunga
- Department of Manufacturing and Industrial Engineering, Faculty of Engineering, University of Peradeniya, Peradeniya 20400, Sri Lanka; (S.M.A.); (N.M.L.F.); (A.K.K.)
| | - Aruna Manipura
- Department of Chemical and Process Engineering, Faculty of Engineering, University of Peradeniya, Peradeniya 20400, Sri Lanka; (O.H.P.G.); (D.B.W.); (A.M.)
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15
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Eco-friendly carboxymethyl cellulose hydrogels filled with nanocellulose or nanoclays for agriculture applications as soil conditioning and nutrient carrier and their impact on cucumber growing. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126771] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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16
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Recent trends in the application of modified starch in the adsorption of heavy metals from water: A review. Carbohydr Polym 2021; 269:117763. [PMID: 34294282 DOI: 10.1016/j.carbpol.2021.117763] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 02/02/2021] [Accepted: 02/02/2021] [Indexed: 10/22/2022]
Abstract
The presence of polyfunctional ligands on the bio-macromolecules acts as an efficient adsorbent for heavy metal ions. Starch is one of the most abundant, easily available and cheap biopolymer of plant origin. However, native starch exhibits significantly low adsorption capacity due to the absence of some essential functional groups like carboxyl, amino or ester groups and is thus modified using various reaction routes like grafting, cross-linking, esterification, oxidation and irradiation for addition of functional groups to increase its adsorption capacity. The present review provides a comprehensive discussion on the above mentioned modification schemes of starch over the last 10-15 years highlighting their preparation methods, physico-chemical characteristics along with their adsorption capacities and mechanisms of heavy metal ions from water.
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17
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Removal of Pb(II) Ions from Aqueous Solution Using Modified Starch. JOURNAL OF COMPOSITES SCIENCE 2021. [DOI: 10.3390/jcs5020046] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
In this study, two types of modified cassava starch samples (MCS and MWS) prepared from commercially available native cassava starch (NCS) and native cassava starch extracted using the wet method (NWS) were investigated for the removal of Pb(II) ions from aqueous solutions. MCS and MWS samples were synthesized under acidic conditions using Pluronic 123 as the structure-directing agent and tetraethylorthosilicate (TEOS) as the chemical modifying agent. Modified starch samples were characterized using Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), X-ray Diffraction (XRD), and a nitrogen (N2) gas adsorption–desorption analyser. MCS and MWS showed enhanced thermal stabilities upon acid hydrolysis and chemical modification. The effects of contact time and initial Pb(II) concentration were studied through batch adsorption experiments. Adsorption kinetics followed the pseudo-second-order kinetic model. The equilibrium adsorption data were analysed and compared by the Langmuir and Freundlich adsorption models. The coefficient correlation (R2) was employed as a measure of the fit. The Langmuir model fitted well with equilibrium adsorption data, giving a maximum Pb(II) adsorption capacity of 370.37 and 294.12 mg/g for MWS and MCS, respectively. Modified samples exhibited a higher desorption efficiency of over 97%. This study demonstrated that modified starch could be utilized for Pb(II) removal from industrial wastewater.
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Tahari N, de Hoyos-Martinez PL, Abderrabba M, Ayadi S, Labidi J. Lignin - montmorillonite hydrogels as toluene adsorbent. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125108] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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19
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Chen J, Jiang X, Yin D, Zhang W. Preparation of a Hydrogel-Based Adsorbent for Metal Ions through High Internal Phase Emulsion Polymerization. ACS OMEGA 2020; 5:19920-19927. [PMID: 32832746 PMCID: PMC7439275 DOI: 10.1021/acsomega.9b03405] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Accepted: 01/08/2020] [Indexed: 06/11/2023]
Abstract
In this work, a porous hydrogel-based adsorbent for metal ions was prepared through the copolymerization of acrylic acid and 2-hydroxyethyl methacrylate using a high internal phase emulsion (HIPE) method. Stretched molecular chains in the hydrogel ensure the excellent accessibility of functional sites by the metal ions. A highly open cellular structure endows the P(AANa-co-HEMA) gel with high transport rates as a promising adsorbent. Adsorption properties were investigated by three isotherm models and two kinetic models. X-ray photoelectron spectroscopy analysis proved a chelating interaction between -COO- and metal ions. The adsorption capacity reached 630 mg·g-1 for Pb2+ under 303 K and a 400 μg·mL-1 initial concentration. The results show that the as-prepared PolyHIPE-based P(AANa-co-HEMA) gel possesses an open cellular structure, high adsorption capacity, and high selectivity for Pb2+.
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20
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Alipour A, Zarinabadi S, Azimi A, Mirzaei M. Adsorptive removal of Pb(II) ions from aqueous solutions by thiourea-functionalized magnetic ZnO/nanocellulose composite: Optimization by response surface methodology (RSM). Int J Biol Macromol 2020; 151:124-135. [DOI: 10.1016/j.ijbiomac.2020.02.109] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 01/30/2020] [Accepted: 02/11/2020] [Indexed: 01/18/2023]
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21
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Ianchis R, Ninciuleanu CM, Gifu IC, Alexandrescu E, Nistor CL, Nitu S, Petcu C. Hydrogel-clay Nanocomposites as Carriers for Controlled Release. Curr Med Chem 2020; 27:919-954. [PMID: 30182847 DOI: 10.2174/0929867325666180831151055] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 07/12/2018] [Accepted: 07/24/2018] [Indexed: 12/15/2022]
Abstract
The present review aims to summarize the research efforts undertaken in the last few years in the development and testing of hydrogel-clay nanocomposites proposed as carriers for controlled release of diverse drugs. Their advantages, disadvantages and different compositions of polymers/biopolymers with diverse types of clays, as well as their interactions are discussed. Illustrative examples of studies regarding hydrogel-clay nanocomposites are detailed in order to underline the progressive researches on hydrogel-clay-drug pharmaceutical formulations able to respond to a series of demands for the most diverse applications. Brief descriptions of the different techniques used for the characterization of the obtained complex hybrid materials such as: swelling, TGA, DSC, FTIR, XRD, mechanical, SEM, TEM and biology tests, are also included. Enlightened by the presented data, we can suppose that hydrogel-clay nanocomposites will still be a challenging subject of global assiduous researches. We can dare to dream to an efficient drug delivery platform for the treatment of multiple affection concomitantly, these being undoubtedly like "a tree of life" bearing different kinds of fruits and leaves proper for human healing.
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Affiliation(s)
- Raluca Ianchis
- National Institute for Research & Development in Chemistry and Petrochemistry ICECHIM Bucharest, Spl. Independentei 202, 6th District, 0600021 Bucharest, Romania
| | - Claudia Mihaela Ninciuleanu
- National Institute for Research & Development in Chemistry and Petrochemistry ICECHIM Bucharest, Spl. Independentei 202, 6th District, 0600021 Bucharest, Romania
| | - Ioana Catalina Gifu
- National Institute for Research & Development in Chemistry and Petrochemistry ICECHIM Bucharest, Spl. Independentei 202, 6th District, 0600021 Bucharest, Romania
| | - Elvira Alexandrescu
- National Institute for Research & Development in Chemistry and Petrochemistry ICECHIM Bucharest, Spl. Independentei 202, 6th District, 0600021 Bucharest, Romania
| | - Cristina Lavinia Nistor
- National Institute for Research & Development in Chemistry and Petrochemistry ICECHIM Bucharest, Spl. Independentei 202, 6th District, 0600021 Bucharest, Romania
| | - Sabina Nitu
- National Institute for Research & Development in Chemistry and Petrochemistry ICECHIM Bucharest, Spl. Independentei 202, 6th District, 0600021 Bucharest, Romania
| | - Cristian Petcu
- National Institute for Research & Development in Chemistry and Petrochemistry ICECHIM Bucharest, Spl. Independentei 202, 6th District, 0600021 Bucharest, Romania
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Liu H, Wang Q, Zhang F. Preparation of Fe 3O 4@SiO 2@ P(AANa- co-AM) Composites and Their Adsorption for Pb(II). ACS OMEGA 2020; 5:8816-8824. [PMID: 32337443 PMCID: PMC7178785 DOI: 10.1021/acsomega.0c00403] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 03/25/2020] [Indexed: 05/23/2023]
Abstract
A series of magnetic composites of sodium polyacrylate and polyacrylamide copolymer [Fe3O4@SiO2@P(AANa-co-AM)] were prepared. The investigation showed that the adsorption efficiency of Pb(II) was the best when the acrylamide/acrylic acid (AM/AA) mass ratio of composites was 5:5. Therefore, the composite of this ratio was selected as the adsorbent to systematically adsorb Pb(II) in aqueous solution. Static adsorption of Pb(II) to the magnetic composites in aqueous solutions was investigated by varying the solution pH and the concentration of Pb(II). The adsorption kinetics and isotherms model of Pb(II) on the Fe3O4@SiO2@P(AANa-co-AM) composites followed a pseudo-second-order model and the Langmuir isotherm model, respectively. When the temperatures were 298.15, 308.15, and 318.15 K, the maximum adsorption capacities of Fe3O4@SiO2@P(AANa-co-AM) composites were 237.53, 248.14, and 255.10 mg/g, respectively. The thermodynamic study of adsorption showed that the adsorption of Pb(II) on Fe3O4@SiO2@P(AANa-co-AM) composites was a spontaneous endothermic process. The X-ray photoelectron spectroscopy (XPS) analysis showed that the adsorption of Pb(II) was due to the chelation between -COO- and Pb(II). After four adsorption-desorption cycles, the adsorbent can still maintain a high adsorption capacity.
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23
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High and fast adsorption of Cd(II) and Pb(II) ions from aqueous solutions by a waste biomass based hydrogel. Sci Rep 2020; 10:3285. [PMID: 32094399 PMCID: PMC7040188 DOI: 10.1038/s41598-020-60160-w] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Accepted: 02/03/2020] [Indexed: 11/09/2022] Open
Abstract
A waste biomass based hydrogel soybean residue-poly(acrylic acid) (SR–PAA) was prepared through a fast one-step reaction by UV radiation technology. SR–PAA was used to remove Cd(II) and Pb(II) ions from aqueous solutions. Effect of pH value, temperature, initial concentration, contact time, competitive ions in the solutions on metal ions adsorption and desorption/regeneration capacity of SR–PAA was discussed in detailed. It was found that the adsorption equilibrium was achieved within 20 min, and maximum adsorption for Cd(II) and Pb(II) ions were 1.43 and 2.04 mmol g−1, respectively. Besides, adsorption thermodynamic analysis indicates that the process of Cd(II) and Pb(II) ions adsorption was spontaneous, feasible and exothermic in nature. And experimental data fitted the pseudo-second-order and Freundlich isotherm model well. Moreover, XPS spectra analysis proves that the metal ions were adsorbed on SR–PAA due to the interaction of carboxyl, hydroxyl and amine with these ions as ionic bond, coordination bond and electrostatic interaction.
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24
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Structural interplay and macroscopic aggregation of rice albumins after binding with heavy metal ions. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2019.105248] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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25
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Jamali A, Moghbeli MR, Ameli F, Roayaie E, Karambeigi MS. Synthesis and characterization of pH‐sensitive poly(acrylamide‐
co
‐methylenebisacrylamide‐
co
‐acrylic acid) hydrogel microspheres containing silica nanoparticles: Application in enhanced oil recovery processes. J Appl Polym Sci 2019. [DOI: 10.1002/app.48491] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- A. Jamali
- Smart Polymers and Nanocomposites Research GroupSchool of Chemical Engineering, Iran University of Science and Technology Tehran 16846–13114 Iran
| | - M. R. Moghbeli
- Smart Polymers and Nanocomposites Research GroupSchool of Chemical Engineering, Iran University of Science and Technology Tehran 16846–13114 Iran
| | - F. Ameli
- Smart Polymers and Nanocomposites Research GroupSchool of Chemical Engineering, Iran University of Science and Technology Tehran 16846–13114 Iran
| | - E. Roayaie
- National Iranian Oil CompanyIOR/EOR Research Institute Tehran 1485733111 Iran
| | - M. S. Karambeigi
- National Iranian Oil CompanyIOR/EOR Research Institute Tehran 1485733111 Iran
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Assembly of Polyacrylamide-Sodium Alginate-Based Organic-Inorganic Hydrogel with Mechanical and Adsorption Properties. Polymers (Basel) 2019; 11:polym11081239. [PMID: 31357415 PMCID: PMC6722572 DOI: 10.3390/polym11081239] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 07/10/2019] [Accepted: 07/12/2019] [Indexed: 12/28/2022] Open
Abstract
Hydrogels have been widely used in water purification. However, there is not much discussion and comparison about the effects of different nanofillers on the reinforcement and adsorption performances of hydrogels, which can be subjected to rapid water flow and possess strong adsorption ability. In this work, polyacrylamide (PAAM)-sodium alginate (SA) interpenetrating polymer network-structured hydrogels were prepared by in situ polymerization. PAAM formed the first flexible network and SA constructed the second rigid network. Three kinds of inorganic nanoparticles including carbon nanotubes (CNTs), nanoclays (NCs), and nanosilicas (NSs) were incorporated into a PAAM-SA matrix via hydrogen bond. The obtained hydrogels exhibited a macroporous structure with low density (≈1.4 g/cm3) and high water content (≈83%). Compared with neat PAAM-SA, the hydrogels with inorganic nanoparticles possessed excellent mechanical strengths and elasticities, and the compression strength of PAAM-SA-NS reached up to 1.3 MPa at ε = 60% by adding only 0.036 g NS in a 30 g polymer matrix. However, CNT was the best filler to improve the adsorption capacity owing to its multi-walled hollow nanostructure, and the adsorption capacity of PAAM-SA-CNT was 1.28 times higher than that of PAAM-SA. The prepared hydrogels can be potential candidates for use as absorbents to treat wastewater.
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27
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Liu J, Wu P, Li S, Chen M, Cai W, Zou D, Zhu N, Dang Z. Synergistic deep removal of As(III) and Cd(II) by a calcined multifunctional MgZnFe-CO 3 layered double hydroxide: Photooxidation, precipitation and adsorption. CHEMOSPHERE 2019; 225:115-125. [PMID: 30870628 DOI: 10.1016/j.chemosphere.2019.03.009] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 03/01/2019] [Accepted: 03/03/2019] [Indexed: 06/09/2023]
Abstract
A high removal rate (>99.7%) of combined arsenite (As(III)) and Cd (Cd(II)) in low concentration (1000 μg/L) from contaminated water was achieved by a calcined MgZnFe-CO3 layered double hydroxide (CMZF) adsorbent. Batch control studies and a series of spectroscopy detection technologies were employed to investigate the removal mechanism and interactions between As(III) and Cd(II) on the interface of water/CMZF. Synergistic adsorption and photooxidation occurred based on the systematical kinetic and isotherm studies. The enhanced removal of As(III) was achieved by the photooxidation, formation of ternary As(III)Cd(II) surface complexes and enhanced hydrogen bond. Meanwhile, oxidative formed negative charged As(V) could reduce the electrostatic repulsion force between Cd(II) cations and play a role as anion bridging, consequently resulted in a stronger attraction between CMZF and Cd(II). Combined with the verdicts of relevant characterizations such as XRD, XPS and EPR, it was assumed that the deep co-removal mechanism could be attributed to the coupling of various processes including intercalation, complexation, photooxidation of As(III) and precipitation of CdCO3. Moreover, the successful removal of As(III) and Cd(II) from real water matrix qualified the CMZF a potentially attractive adsorbent for both As(III) and Cd(II) deep treatment in practical engineering.
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Affiliation(s)
- Junqin Liu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, PR China
| | - Pingxiao Wu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, PR China; Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, PR China; Guangdong Engineering and Technology Research Center for Environmental Nanomaterials, Guangzhou, 510006, China; Guangdong Environmental Protection Key Laboratory of Solid Waste Treatment and Recycling, Guangzhou, 510006, PR China.
| | - Shuaishuai Li
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, PR China
| | - Meiqing Chen
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, PR China
| | - Wentin Cai
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Dinghui Zou
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Nengwu Zhu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, PR China; Guangdong Environmental Protection Key Laboratory of Solid Waste Treatment and Recycling, Guangzhou, 510006, PR China
| | - Zhi Dang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, PR China; Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, PR China
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28
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Advances in chemical modifications of starches and their applications. Carbohydr Res 2019; 476:12-35. [DOI: 10.1016/j.carres.2019.02.007] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 02/10/2019] [Accepted: 02/25/2019] [Indexed: 11/23/2022]
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29
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Yadav VB, Gadi R, Kalra S. Clay based nanocomposites for removal of heavy metals from water: A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 232:803-817. [PMID: 30529868 DOI: 10.1016/j.jenvman.2018.11.120] [Citation(s) in RCA: 105] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 10/25/2018] [Accepted: 11/25/2018] [Indexed: 06/09/2023]
Abstract
The exponential increment in world population, recent industrialization, civilization, agricultural and household activities leads to greater levels of water pollution in terms of organic and inorganic contaminants. However, numerous workers have done research for the removal of these pollutants and various types of clays and/or modified clays have been extensively used for this purpose. But all identified adsorbent materials are not able to remove pollutants after certain concentration and sometimes these contaminants are left as such in environment which may create other environmental issues. This paper presents comprehensive information for the adsorption of heavy metal ions from water and waste water using various nanostructured adsorbents such as different clay minerals (kaolinite, montmorillonite) and clay (bentonite), carbon nanotube and nanocomposites. In addition to this, the efficiency of developed materials for the removal of heavy metals is also discussed in details along with comparison of their adsorption efficiencies, pH and change in specific surface area, initial metal ion concentration and contact time. This paper also states the future directions which could be followed to challenge the situation of removal of traces of heavy metals from water, hence protecting water bodies from high pollution load.
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Affiliation(s)
| | - Ranu Gadi
- Indira Gandhi Delhi Technical University for Women, Delhi, India.
| | - Sippy Kalra
- Central Road Research Institute-CSIR, New Delhi, India.
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30
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Kong W, Li Q, Li X, Su Y, Yue Q, Gao B. A biodegradable biomass-based polymeric composite for slow release and water retention. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 230:190-198. [PMID: 30286348 DOI: 10.1016/j.jenvman.2018.09.086] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 09/01/2018] [Accepted: 09/23/2018] [Indexed: 06/08/2023]
Abstract
Slow-release fertilizer has been proven to be more effective than traditional fertilizer for providing a long-term stable nutrient supply. Although such fertilizers have been widely investigated, their water-retention properties and biodegradability have not been fully analysed. Composites of fertilizers and polymers provide opportunities to prepare new types of fertilizer with enhanced properties for real applications. Chicken feather protein-graft-poly(potassium acrylate)-polyvinyl alcohol semi-interpenetrating networks forming a super absorbent resin combined with nitrogen (N) and phosphorus (P) (CFP-g-PKA/PVA/NP semi-IPNs SAR) was prepared. The chemically bonded or physically embedded fertilizer compound could be released form the resin matrix to the surrounding soil under irrigation. The synthesis mechanism, morphology, and chemical and mechanical structure of the synthesized composites were investigated. The reactant doses were optimized through response surface methodology (RSM). A 30-day field trial of the prepared SAR was applied to detect the influence of sample particle size, soil salinity, pH, and moisture content on the slow-release behaviour of N and P. The maximum release values of N and P from the composites were 69.46% N and 65.23% P. A 120-day soil burying experiment and 30-day Aspergillus niger (A. niger) inoculation were performed, and the biodegradability and change in microstructure were monitored. The addition of SAR to soil could also improve the water-retention ability of the soil.
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Affiliation(s)
- Wenjia Kong
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan 250100, China
| | - Qian Li
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan 250100, China.
| | - Xiaodi Li
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan 250100, China
| | - Yuan Su
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan 250100, China; School of Mathematic and Quantitative Economics, Shandong University of Finance and Economics, Jinan 250100, China
| | - Qinyan Yue
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan 250100, China
| | - Baoyu Gao
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan 250100, China
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31
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Nematidil N, Sadeghi M. Fabrication and characterization of a novel biosorbent and its evaluation as adsorbent for heavy metal ions. Polym Bull (Berl) 2018. [DOI: 10.1007/s00289-018-2646-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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32
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Mohammadinezhad A, Marandi GB, Farsadrooh M, Javadian H. Synthesis of poly(acrylamide-co-itaconic acid)/MWCNTs superabsorbent hydrogel nanocomposite by ultrasound-assisted technique: Swelling behavior and Pb (II) adsorption capacity. ULTRASONICS SONOCHEMISTRY 2018; 49:1-12. [PMID: 30082252 DOI: 10.1016/j.ultsonch.2017.12.028] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2017] [Revised: 12/15/2017] [Accepted: 12/15/2017] [Indexed: 06/08/2023]
Abstract
In this research, the poly (acrylamide-co-itaconic acid)/multi-walled carbon nanotubes (P(AAm-co-IA)/MWCNTs) as a novel superabsorbent hydrogel nanocomposite was synthesized by graft copolymerization of acrylamide (AAm) and itaconic acid (IA) mixture in the presence of the MWCNTs using ammonium persulfate (APS) as a free radical initiator and methylenebisacrylamide (MBA) as a crosslinker under ultrasound-assisted condition. The blank P(AAm-co-IA) hydrogel and its composite with the MWCNTs were characterized by means of SEM, FTIR, XRD and TGA methods. The effects of different parameters such as pH, time, the MWCNTs content and salt solutions on swelling behavior were investigated. The stability of the hydrogel increased by any increase in the MWCNTs content, which might be attributed to the hydrophobic nature of the MWCNTs as well as the increase of the crosslinker density. The water retention capacity (WRC) of the P(AAm-co-IA) hydrogel increased in the presence of the MWCNT (10 wt%). The synthesized hydrogel nanocomposite was studied for Pb (II) adsorption from aqueous solution. The effects of different parameters such as contact time (5-90 min), Pb (II) initial concentration (25-175 mg/L) and initial pH (1.5-4.5) of solution on Pb (II) adsorption were investigated by batch method. In comparison to P(AAm-co-IA) hydrogel, the P(AAm-co-IA)/MWCNTs hydrogel nanocompoite showed better adsorption behavior toward Pb (II). One of the most important aspects of this research was to investigate the effects of ultrasonic waves on polymer matrix and its ability.
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Affiliation(s)
- Alireza Mohammadinezhad
- Department of Chemistry, College of Basic Sciences, Karaj Branch, Islamic Azad University, P.O. Box 31485-313, Karaj, Iran.
| | - Gholam Bagheri Marandi
- Department of Chemistry, College of Basic Sciences, Karaj Branch, Islamic Azad University, P.O. Box 31485-313, Karaj, Iran
| | - Majid Farsadrooh
- Young Researchers and Elite Club, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Hamedreza Javadian
- Universitat Politècnica de Catalunya, Department of Chemical Engineering, ETSEIB, Diagonal 647, 08028 Barcelona, Spain.
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33
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Liu Y, Qian P, Yu Y, Yu B, Wang Y, Ye S, Chen Y. Preparation and characterization of a novel hybrid chelating material for effective adsorption of Cu(II) and Pb(II). J Environ Sci (China) 2018; 67:224-236. [PMID: 29778156 DOI: 10.1016/j.jes.2017.08.026] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Revised: 08/27/2017] [Accepted: 08/30/2017] [Indexed: 06/08/2023]
Abstract
The discharge of heavy metal ions such as Cu2+ and Pb2+ poses a severe threat to public health and the environment owing to their extreme toxicity and bioaccumulation through food chains. Herein, we report a novel organic-inorganic hybrid adsorbent, Al(OH)3-poly(acrylamide-dimethyldiallylammonium chloride)-graft-dithiocarbamate (APD), for rapid and effective removal of Cu2+ and Pb2+. In this adsorbent, the "star-like" structure of Al(OH)3-poly(acrylamide-dimethyldiallylammonium chloride) served as the support of dithiocarbamate (DTC) functional groups for easy access of heavy metal ions and assisted development of large and compact floccules. The synthesized adsorbent was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), and thermogravimetric analysis (TGA). APD was demonstrated to have rapid adsorption kinetics with an initial rate of 267.379 and 2569.373mg/(g·min) as well as superior adsorption capacities of 317.777 and 586.699mg/g for Cu2+ and Pb2+ respectively. The adsorption process was spontaneous and endothermic, involving intraparticle diffusion and chemical interaction between heavy metal ions and the functional groups of APD. To assess its versatility and wide applicability, APD was also used in turbid heavy metal wastewater, and performed well in removing suspended particles and heavy metal ions simultaneously through flocculation and chelation. The rapid, convenient and effective adsorption of Cu2+ and Pb2+ gives APD great potential for heavy metal decontamination in industrial applications.
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Affiliation(s)
- Ya Liu
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Peng Qian
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Yang Yu
- Lakehead University, Thunder Bay, ON P7B 5E1, Canada
| | - Bo Yu
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yongliang Wang
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Shufeng Ye
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
| | - Yunfa Chen
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
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Huang J, Kankanamge NR, Chow C, Welsh DT, Li T, Teasdale PR. Removing ammonium from water and wastewater using cost-effective adsorbents: A review. J Environ Sci (China) 2018; 63:174-197. [PMID: 29406102 DOI: 10.1016/j.jes.2017.09.009] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 09/15/2017] [Accepted: 09/18/2017] [Indexed: 06/07/2023]
Abstract
Ammonium is an important nutrient in primary production; however, high ammonium loads can cause eutrophication of natural waterways, contributing to undesirable changes in water quality and ecosystem structure. While ammonium pollution comes from diffuse agricultural sources, making control difficult, industrial or municipal point sources such as wastewater treatment plants also contribute significantly to overall ammonium pollution. These latter sources can be targeted more readily to control ammonium release into water systems. To assist policy makers and researchers in understanding the diversity of treatment options and the best option for their circumstance, this paper produces a comprehensive review of existing treatment options for ammonium removal with a particular focus on those technologies which offer the highest rates of removal and cost-effectiveness. Ion exchange and adsorption material methods are simple to apply, cost-effective, environmentally friendly technologies which are quite efficient at removing ammonium from treated water. The review presents a list of adsorbents from the literature, their adsorption capacities and other parameters needed for ammonium removal. Further, the preparation of adsorbents with high ammonium removal capacities and new adsorbents is discussed in the context of their relative cost, removal efficiencies, and limitations. Efficient, cost-effective, and environmental friendly adsorbents for the removal of ammonium on a large scale for commercial or water treatment plants are provided. In addition, future perspectives on removing ammonium using adsorbents are presented.
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Affiliation(s)
- Jianyin Huang
- Natural and Built Environments Research Centre, School of Natural and Built Environments, University of South Australia, SA 5095, Australia; Future Industries Institute, University of South Australia, SA 5095, Australia; Environmental Futures Research Institute, School of Environment, Griffith University, Gold Coast campus, QLD 4215, Australia.
| | - Nadeeka Rathnayake Kankanamge
- Environmental Futures Research Institute, School of Environment, Griffith University, Gold Coast campus, QLD 4215, Australia
| | - Christopher Chow
- Natural and Built Environments Research Centre, School of Natural and Built Environments, University of South Australia, SA 5095, Australia; Future Industries Institute, University of South Australia, SA 5095, Australia
| | - David T Welsh
- Environmental Futures Research Institute, School of Environment, Griffith University, Gold Coast campus, QLD 4215, Australia
| | - Tianling Li
- Environmental Futures Research Institute, School of Environment, Griffith University, Gold Coast campus, QLD 4215, Australia
| | - Peter R Teasdale
- Natural and Built Environments Research Centre, School of Natural and Built Environments, University of South Australia, SA 5095, Australia; Future Industries Institute, University of South Australia, SA 5095, Australia
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35
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Maity J, Ray SK. Competitive Removal of Cu(II) and Cd(II) from Water Using a Biocomposite Hydrogel. J Phys Chem B 2017; 121:10988-11001. [DOI: 10.1021/acs.jpcb.7b08796] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jayabrata Maity
- Department of Polymer Science
and Technology, University of Calcutta, 92, A.P.C. Road, Kolkata-700009, India
| | - Samit Kumar Ray
- Department of Polymer Science
and Technology, University of Calcutta, 92, A.P.C. Road, Kolkata-700009, India
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36
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Ghorbanloo M, Heydari A, Yahiro H. Ag-nanoparticle embedded p(AA) hydrogel as an efficient green heterogeneous Nano-catalyst for oxidation and reduction of organic compounds. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3917] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
| | - Ali Heydari
- Department of Chemistry, Faculty of Science; University of Zanjan; 45371-38791 Zanjan Iran
| | - Hidenori Yahiro
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering; Ehime University; Matsuyama 790-8577 Japan
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37
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Goswami SK, McAdam CJ, Hanton LR, Moratti SC. Hyperelastic Tough Gels through Macrocross-Linking. Macromol Rapid Commun 2017; 38. [PMID: 28489301 DOI: 10.1002/marc.201700103] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 04/04/2017] [Indexed: 01/12/2023]
Abstract
The wet and soft nature of hydrogels makes them useful as a mimic for biological tissues, and in uses such as actuators and drug delivery vehicles. For many applications the mechanical performance of the gel is critical, but gels are notoriously weak and prone to fracture. Free radical polymerization is a very powerful technique allowing for fine spatial and temporal control of polymerization, but also allows for the use of a wide range of monomers and mixtures. In this work, it is demonstrated that extremely tough and extensible hydrogels can be readily produced through simple radical polymerization of acrylamide or acrylic acid with a poly(ethylene oxide) macrocross-linker. These gels, with a water content of 85%, are extremely elastic with an extension much more than 15 000% at 9 MPa true stress. They can be compressed over 98% at a stress of 17 MPa. They are notch-insensitive, and the usual trouser tear test does not work because the tear simply does not propagate. This highly extensible nature seems to be related to very long chain lengths between cross-links and efficient incorporation of chains into the network.
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Affiliation(s)
- Shailesh K Goswami
- Department of Chemistry, University of Otago, PO Box 56, Dunedin, 9054, New Zealand
| | | | - Lyall R Hanton
- Department of Chemistry, University of Otago, PO Box 56, Dunedin, 9054, New Zealand
| | - Stephen C Moratti
- Department of Chemistry, University of Otago, PO Box 56, Dunedin, 9054, New Zealand
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38
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Abstract
A cross-linked starch xanthate was prepared by graft copolymerization of acrylamide and sodium acrylate onto starch xanthate using potassium persulfate and sodium hydrogen sulfite initiating system and N,N′-methylenebisacrylamide as a cross-linker. As this kind of cross-linked potato starch xanthate can effectively absorb heavy metal ions, it was dispersed in aqueous solutions of divalent heavy metal ions (Pb2+ and Cd2+) to investigate their absorbency by the polymer. Factors that can influence absorbency were investigated, such as the ratio of matrix to monomers, the amount of initiator and cross-linker, pH, and the concentration of metal ions. Results were reached and conclusion was drawn that the best synthetic conditions for the polymer adsorbing Pb2+ and Cd2+ were as follows: the quality ratio of matrix to monomers was 1 : 12 and 1 : 11, the amount of initiator was 2.4% and 3.2% of matrix, and the amount of cross-linker was 12 mg and 13 mg. When the initial concentration of ions was 10 mg/L, the highest quantities of adsorption of Pb2+ and Cd2+ were 47.11 mg/g and 36.55 mg/g. Adsorption mechanism was discussed by using Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscope (SEM), Energy Dispersive X-Ray Spectroscopy (EDS) test, and adsorption kinetic simulation.
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39
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Sharaf El-Deen GE, Imam NG, Ayoub RR. Preparation, characterization and application of superparamagnetic iron oxide nanoparticles modified with natural polymers for removal of 60Co-radionuclides from aqueous solution. RADIOCHIM ACTA 2016. [DOI: 10.1515/ract-2016-2595] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Superparamagnetic iron oxide nanoparticles (IO-MNPs) coated with natural polymers, starch (IO-S MNPs) and dextrin (IO-D MNPs), were synthesized by modified co-precipitation method. IO and hybrid-IO-MNPs were characterized by XRD, SEM, HRTEM, FT-IR spectroscopy, vibrating sample magnetometer (VSM) and zeta potential (ZP). IO-S MNPs and IO-D MNPs have IO core-shell structure with core of 10.8 nm and 13.8 nm and shell of 7.5 nm and 5.9 nm, respectively. The efficiency of the hybrid IO-MNPs for sorption of 60Co(II)-radionuclides from aqueous solution was investigated under varying experimental conditions. Kinetic data were described well by pseudo-second-order mode, sorption isotherms were fitted quite with Freundlich model with maximum adsorption capacity 36.89 (mmol·g−1)/(L·mmol−1)n for IO-S MNPs and 24.9 (mmol·g−1)/(L·mmol−1)n for IO-D MNPs. Sorption of 60Co-radionuclides by IO-S MNPs was suppressed with salinity and most of the adsorbed 60Co onto IO-S MNPs could be remove with 0.1 M HCl solution. IO-S MNPs exhibits superparamagnetic properties, easier separation according to higher saturation magnetization (47 emu/g) and better adsorption for 60Co-radionuclides than IO-D MNPs.
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Affiliation(s)
- Gehan E. Sharaf El-Deen
- Radioactive Waste Management Department, Hot Laboratory Center, Atomic Energy Authority, P.O.13759, Cairo, Egypt , Tel.: +2 01200301939, Fax: +2 4620806
| | - Neama G. Imam
- Experimental Physics Department, Nuclear Research Center, Atomic Energy Authority, 13759, Cairo, Egypt
- Elettra, Sincrotrone Trieste, Strada Statale 14 – km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - Refaat R. Ayoub
- Nuclear Chemistry Department, Hot Laboratory Center, Atomic Energy Authority, P.O. 13759, Cairo, Egypt
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40
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Hierarchical aminated PAN/γ–AlOOH electrospun composite nanofibers and their heavy metal ion adsorption performance. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2016.02.008] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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41
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Poly (acrylic acid-co-acryloyl tetrasodium thiacalix[4]arene tetrasulfonate) grafted dextrin: new supper metal ion adsorbing hydrogels. JOURNAL OF POLYMER RESEARCH 2016. [DOI: 10.1007/s10965-016-0956-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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42
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Kong W, Li Q, Liu J, Li X, Zhao L, Su Y, Yue Q, Gao B. Adsorption behavior and mechanism of heavy metal ions by chicken feather protein-based semi-interpenetrating polymer networks super absorbent resin. RSC Adv 2016. [DOI: 10.1039/c6ra18180e] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Preparation and metal ions adsorption of CFP-g-PKA/PVA semi-IPN super absorbent resin.
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Affiliation(s)
- Wenjia Kong
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Shandong University
- Jinan 250100
- China
| | - Qian Li
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Shandong University
- Jinan 250100
- China
| | - Jia Liu
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Shandong University
- Jinan 250100
- China
| | - Xiaodi Li
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Shandong University
- Jinan 250100
- China
| | - Liwei Zhao
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Shandong University
- Jinan 250100
- China
| | - Yuan Su
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Shandong University
- Jinan 250100
- China
| | - Qinyan Yue
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Shandong University
- Jinan 250100
- China
| | - Baoyu Gao
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Shandong University
- Jinan 250100
- China
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43
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Haroon M, Wang L, Yu H, Abbasi NM, Zain-ul-Abdin ZUA, Saleem M, Khan RU, Ullah RS, Chen Q, Wu J. Chemical modification of starch and its application as an adsorbent material. RSC Adv 2016. [DOI: 10.1039/c6ra16795k] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Starch is a biopolymer of plant origin which is cheap, abundant and has many applications in food and non-food industries.
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44
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Pal A, Das D, Sarkar AK, Ghorai S, Das R, Pal S. Synthesis of glycogen and poly (acrylic acid)-based graft copolymers via ATRP and its application for selective removal of Pb2+ ions from aqueous solution. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.01.024] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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