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Şenol ZM, El Messaoudi N, Ciğeroglu Z, Miyah Y, Arslanoğlu H, Bağlam N, Kazan-Kaya ES, Kaur P, Georgin J. Removal of food dyes using biological materials via adsorption: A review. Food Chem 2024; 450:139398. [PMID: 38677180 DOI: 10.1016/j.foodchem.2024.139398] [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: 12/08/2023] [Revised: 04/14/2024] [Accepted: 04/15/2024] [Indexed: 04/29/2024]
Abstract
It is alarming that synthetic food dyes (FD) are widely used in various industries and that these facilities discharge their wastewater into the environment without treating it. FDs mixed into industrial wastewater pose a threat to the environment and human health. Therefore, removing FDs from wastewater is very important. This review explores the burgeoning field of FD removal from wastewater through adsorption using biological materials (BMs). By synthesizing a wealth of research findings, this comprehensive review elucidates the diverse array of BMs employed, ranging from algae and fungi to agricultural residues and microbial biomass. Furthermore, this review investigates challenges in practical applications, such as process optimization and scalability, offering insights into bridging the gap between laboratory successes and real-world implementations. Harnessing the remarkable adsorptive potential of BMs, this review presents a roadmap toward transformative solutions for FD removal, promising cleaner and safer production practices in the food and beverage industry.
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Affiliation(s)
- Zeynep Mine Şenol
- Department of Nutrition and Diet, Faculty of Health Sciences, Cumhuriyet University, Sivas 58140, Turkey.
| | - Noureddine El Messaoudi
- Laboratory of Applied Chemistry and Environment, Faculty of Sciences, Ibn Zohr University, Agadir 80000, Morocco
| | - Zeynep Ciğeroglu
- Department of Chemical Engineering, Faculty of Engineering and Natural Sciences, Usak University, Usak 64300, Turkey
| | - Youssef Miyah
- Laboratory of Materials, Processes, Catalysis, and Environment, Higher School of Technology, University Sidi Mohamed Ben Abdellah, Fez, Morocco; Ministry of Health and Social Protection, Higher Institute of Nursing Professions and Health Techniques, Fez/Meknes, Morocco
| | - Hasan Arslanoğlu
- Çanakkale Onsekiz Mart University, Engineering Faculty, Chemical Engineering, Çanakkale, Turkey
| | - Nurcan Bağlam
- Department of Nutrition and Diet, Faculty of Health Sciences, Cumhuriyet University, Sivas 58140, Turkey
| | - Emine Sena Kazan-Kaya
- Chemical Engineering Department, Faculty of Engineering, Gebze Technical University, Kocaeli 41400, Turkey
| | - Parminder Kaur
- Circular Economy Solutions (KTR), Geological Survey of Finland, 70210 Kuopio, Finland
| | - Jordana Georgin
- Department of Civil and Environmental, Universidad de la Costa, CUC, Calle 58 #55-66, Barranquilla, Atlántico, Colombia
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2
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Li X, Wang Y, Guo L, Geng X, Wang H, Dong A, Zhang R. Long duration sodium hyaluronate hydrogel with dual functions of both growth prompting and acid-triggered antibacterial activity for bacteria-infected wound healing. Int J Biol Macromol 2024; 274:133423. [PMID: 38942404 DOI: 10.1016/j.ijbiomac.2024.133423] [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: 03/27/2024] [Revised: 06/18/2024] [Accepted: 06/24/2024] [Indexed: 06/30/2024]
Abstract
Conventional wound dressings are monolithically designed to cover the injured areas as well as absorb the exudates at injured site. Furthermore, antibacterial drugs and growth prompting factors are additionally appended to realize sensible and omnibearing wound management, exhibiting long and tedious treatment process in practice. Consequently, the creation of multifunctional wound dressings that combines wound repair enhancement with antibacterial properties turns out to be significant for simplifying wound managements. In our investigation, electronegative human epidermal growth factor (hEGF) was combined with the positively charged Zn-Al layered double hydroxides (Zn-Al LDHs) via electrostatic interaction while the obtained hEGF/LDH was integrated with sodium hyaluronate hydrogel (SH) hydrogel, forming a composite hydrogel with synergistic benefits for wound management. The innovative hEGF/LDH@SH hydrogel equipped with fine biocompatibility was designed to optimize wound healing in which hEGF stimulates epithelial cell growth while LDH released antibacterial factor Zn2+ against Methicillin-resistant staphylococcus aureus (MRSA) and Escherichia coli (E.coli) under acidic wound environment. Additionally, the SH hydrogel constructed a three-dimensional structure that not only safeguarded the wound area but also maintained a moist environment conducive to recovery. The synthesized hEGF/LDH was confirmed via fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and thermo-gravimetry (TG) measurements. The release of Zn2+ from Zn-Al LDH under acid circumstance was detected via inductively coupled plasma (ICP) and the in vitro bactericidal experiments endowed the antibacterial property of hEGF/LDH@SH hydrogel. In vitro drug release experiments illustrated the controlled-release of hEGF from hEGF/LDH which promoted the long-term affect of hEGF at wound site. In vitro cell experiments verified that the hEGF/LDH@SH hydrogel motivated the promotion on cell proliferation and migration without cytotoxicity. An in vivo study of the repairing of MRSA-infected wound in mice indicated that hEGF/LDH@SH hydrogel serves as a simple and novel, innoxious and efficient wound healing approach. This brand new hydrogel possesses properties of promoting the regeneration of skin tissue, achieving antimicrobial therapy without any accessional antibacterial drugs as well as realizing controlled release of hEGF.
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Affiliation(s)
- Xue Li
- Key Laboratory of Systems Bioengineering of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; Department of Chemistry, School of Basic Medical Sciences, Shanxi Medical University, Taiyuan 030001, China
| | - Yixuan Wang
- Department of Chemistry, School of Basic Medical Sciences, Shanxi Medical University, Taiyuan 030001, China
| | - Linzhi Guo
- Department of Morphology Laboratory, School of Basic Medical Sciences, Shanxi Medical University, Taiyuan 030001, China
| | - Xinkai Geng
- Department of Chemistry, School of Basic Medical Sciences, Shanxi Medical University, Taiyuan 030001, China
| | - Haojiang Wang
- Department of Chemistry, School of Basic Medical Sciences, Shanxi Medical University, Taiyuan 030001, China
| | - Anjie Dong
- Key Laboratory of Systems Bioengineering of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Ruiping Zhang
- The Radiology Department of Shanxi Provincial People' Hospital, Five Hospital of Shanxi Medical University, Taiyuan 030001, China.
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3
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Jha A, Mishra S. Exploring the potential of waste biomass-derived pectin and its functionalized derivatives for water treatment. Int J Biol Macromol 2024; 275:133613. [PMID: 38960223 DOI: 10.1016/j.ijbiomac.2024.133613] [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: 04/30/2023] [Revised: 02/02/2024] [Accepted: 06/30/2024] [Indexed: 07/05/2024]
Abstract
Environmental pollution remains a constant challenge due to the indiscriminate use of fossil fuels, mining activities, chemicals, drugs, aromatic compounds, pesticides, etc. Many emerging pollutants with no fixed standards for monitoring and control are being reported. These have adverse impacts on human life and the environment around us. This alarms the wastewater management towards developing materials that can be used for bulk water treatment and are easily available, low cost, non-toxic and biodegradable. Waste biomass like pectin is extracted from fruit peels which are a discarded material. It is used in pharmaceutical and nutraceutical applications but its application as a material for water treatment is very limited in literature. The scientific gap in literature review reports are evident with discussion only on pectin based hydrogels or specific pectin derivatives for some applications. This review focuses on the chemistry, extraction, functionalization and production of pectin derivatives and their applications in water treatment processes. Pectin functionalized derivatives can be used as a flocculant, adsorbent, nano biopolymer, biochar, hybrid material, metal-organic frameworks, and scaffold for the removal of heavy metals, ions, toxic dyes, and other contaminants. The huge quantum of pectin biomass may be explored further to strengthen environmental sustainability and circular economy practices.
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Affiliation(s)
- Adya Jha
- Department of Chemistry, Birla Institute of Technology, Mesra, Ranchi 835215, India
| | - Sumit Mishra
- Department of Chemistry, Birla Institute of Technology, Mesra, Ranchi 835215, India.
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4
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Bambal A, Gomase V, Saravanan D, Jugade R. Highly efficient mesoporous aluminium-magnetite-alginate magnetic composite for defluoridation of water. ENVIRONMENTAL RESEARCH 2024; 261:119698. [PMID: 39074773 DOI: 10.1016/j.envres.2024.119698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2024] [Revised: 07/04/2024] [Accepted: 07/26/2024] [Indexed: 07/31/2024]
Abstract
One of the few elements that can have negative health impacts in both conditions, when consumed in excess or insufficiency is fluoride. In current study, aluminium magnetite alginate composite (AMA) was fabricated and applied using batch adsorption of fluoride as well as by using statistical modelling. Heterogeneous surface as revealed from scanning electron micrograph, thermal stability shown by thermal studies, high surface area of 29.77 m2 g-1, pore volume 0.1987 cm3 g-1 with mesoporous structure having average pore radius of 133 Å shown by BET analysis, fare degree of magnetization from VSM analysis were the important features of this material. Screening experiments and batch trials were carried out to obtain optimum working conditions. pH of 3.0, dosage of 50 mg, interaction period of 60 min and concentration of 50 mg L-1 depicted maximum defluoridation efficacy of about 94%. The adsorption capacity was found to be 60.08 mg g-1 in accordance with Langmuir adsorption isotherm, while pseudo second order kinetics was followed. Overall effects of various factors on sorption process were optimized using response surface methodology (RSM). Regeneration potential of AMA has been demonstrated for 10 adsorption-desorption cycles, showing more than 60% efficiency in tenth cycle. The AMA composite shows E-factor value 0.004 depicting it is sustainable in environment. In short, this novel composite showed excellent morphological, magnetic, functional properties that led to enhanced adsorption efficiency in short span of time that can be regenerated and reused in multiple cycles.
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Affiliation(s)
- Apurva Bambal
- Department of Chemistry, R.T.M. Nagpur University, Nagpur, 440033, India
| | - Vaishnavi Gomase
- Department of Chemistry, R.T.M. Nagpur University, Nagpur, 440033, India
| | - D Saravanan
- Department of Chemistry, National College, Tiruchirappalli, 620001, India
| | - Ravin Jugade
- Department of Chemistry, R.T.M. Nagpur University, Nagpur, 440033, India.
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5
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Wang Q, Liang D, Yang Y, Zhang Y, Wang Y, Zhang L, Ma R, Niu Z. A study on a fixed-bed for Pb(ii) removal by modified alkaline lignin-sodium alginate composite hydrogel. RSC Adv 2024; 14:23483-23494. [PMID: 39071477 PMCID: PMC11273261 DOI: 10.1039/d4ra02975e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Accepted: 07/09/2024] [Indexed: 07/30/2024] Open
Abstract
In this work, alkaline lignin (AL) co-modified with trimercapto-s-triazine trisodium salt (TMT) and sodium alginate (SA) as a matrix were used to create a composite hydrogel for removing heavy metals, specifically divalent lead (Pb) from water. The obtained hydrogel beads were packed into a fixed bed, and then various operating conditions were explored to assess their impact on the efficiency of Pb(ii) removal. The findings indicated that the optimal removal efficiency for Pb(ii) was attained using an inflow rate of 0.159 L min-1, a hydrogel-II filling height of 40 cm, an initial Pb(ii) concentration of 10 mg L-1, and a bottom inflow direction. In the third adsorption-desorption cycle experiment, the breakthrough curve reached equilibrium after 650 min, in which equilibrium time for the initial breakthrough curve was 855 min, indicating that hydrogel-II exhibit good regeneration capability. This work serves as a foundation for practical applications in removing heavy metals from wastewater.
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Affiliation(s)
- Qiaorui Wang
- Yan'an Key Laboratory of Agricultural Solidiste Resource Utilization, School of Petroleum Engineering and Environmental Engineering, Yan'an University 716000 P.R. China
| | - Dingyun Liang
- Yan'an Key Laboratory of Agricultural Solidiste Resource Utilization, School of Petroleum Engineering and Environmental Engineering, Yan'an University 716000 P.R. China
| | - Yalan Yang
- Yan'an Key Laboratory of Agricultural Solidiste Resource Utilization, School of Petroleum Engineering and Environmental Engineering, Yan'an University 716000 P.R. China
| | - Yunran Zhang
- Yan'an Key Laboratory of Agricultural Solidiste Resource Utilization, School of Petroleum Engineering and Environmental Engineering, Yan'an University 716000 P.R. China
| | - Yirong Wang
- Yan'an Key Laboratory of Agricultural Solidiste Resource Utilization, School of Petroleum Engineering and Environmental Engineering, Yan'an University 716000 P.R. China
| | - Lilong Zhang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, State-Local Joint Laboratory for Comprehensive Utilization of Biomass, Guizhou University 550025 P.R. China
| | - Rui Ma
- Zhongsheng Environmental Technology Development Co., Ltd Xi'an 610000 P.R. China
| | - Zhirui Niu
- Yan'an Key Laboratory of Agricultural Solidiste Resource Utilization, School of Petroleum Engineering and Environmental Engineering, Yan'an University 716000 P.R. China
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Teklu T. Oxidative Polymerization of Aniline on the Surface of Sisal Fibers (SFs) as Defluoridation Media for Groundwater. Int J Anal Chem 2024; 2024:6941567. [PMID: 38333412 PMCID: PMC10853025 DOI: 10.1155/2024/6941567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 12/12/2023] [Accepted: 01/04/2024] [Indexed: 02/10/2024] Open
Abstract
Chemical modification of sisal fibers via in situ oxidative polymerization of aniline was conducted to examine their defluoridation capacity for fluoride from drinking water. The effects of polyaniline modifications have shown significant changes on the chemical moieties and defluoridation capacity of sisal fibers (SFs). FTIR peaks at 1440 cm-1 and 1560 cm-1 revealed the presence of benzoid and quinoid structures together with sisal fiber (SF). Thermal profiles confirmed the enhancement of thermal stability of polyaniline-modified sisal fibers (PAniMSFs). SEM microstructure also proved the surface roughening of SFs as a result of polyaniline modifications. Optimal batch adsorption parameters (pH, contact time, adsorbent dose, and initial concentration) were found to be 5, 60 min, 1 g, and 10 mg/L, respectively. Adsorption kinetics proved that the removal of fluoride follows pseudo-second-order model (K2 = 0.18 g. (mg·min)-1), while the adsorption isotherm well described by the Langmuir and Freundlich model with an experimental adsorption capacity of 2.49 mg/g. Hence, modifications and improvements are required to reduce the amount of fluoride to a permissible level and enhance the longevity and activity of adsorbent materials.
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Affiliation(s)
- Tesfamariam Teklu
- Department of Chemistry, Mekelle University, Mekelle, Tigray, Ethiopia
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7
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Zhang F, Zhang C, Zhang B, Han D, Du L, Wu L. Preparation of MgAl-LDHs loaded with blast furnace slag and its removal of Cu(II) and methylene blue from aqueous solution. ENVIRONMENTAL TECHNOLOGY 2024:1-12. [PMID: 38234093 DOI: 10.1080/09593330.2024.2304663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 11/17/2023] [Indexed: 01/19/2024]
Abstract
Blast furnace slag (BFS) is a kind of waste produced in industrial production, as well as a valuable secondary resource. In this paper, layered double hydroxides composites (BFS/LDHs) were prepared by aqueous polymerization, with industrial waste BFS as modifier and magnesium nitrate, aluminium nitrate, and urea as raw materials. BFS/LDHs have been characterized by using scanning electron microscopy (SEM), fourier infrared spectrometer (FT IR), x-ray diffraction (XRD), and the specific surface area analyser (BET). The adsorption of BFS/LDHs on Cu (II) and methylene blue (MB) was investigated by batch experiments. The results showed that the adsorption capacity of BFS/LDHs to Cu (II) is stronger than that of MB. What's more, the solid concentration effect was found in the process of sorption kinetics and sorption isotherms. The sorption kinetics curves of Cu (II) and MB on BFS/LDHs were well fitted by the quasi-second-order kinetics under different adsorbent concentrations. Langmuir and Freundlich sorption isotherm models were used to analyse the adsorption. It showed that the adsorption conforms to Langmuir and Freundlich's adsorption isotherm models. The BFS/LDHs composites have good recycling availability in this adsorption process of Cu (II) and MB, the removal capacity of which was reduced by 16.1% and 3.8% after being recycled for six times, respectively. More importantly, BFS/LDHs composites are not only expected to become a sewage treatment agent, but also to solve the problem of industrial waste treatment, which is a win-win strategy.
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Affiliation(s)
- Fengrong Zhang
- School of Chemistry and Chemical Engineering, Heze University, Heze, People's Republic of China
| | - Cuilan Zhang
- Guiyang Road Primary School, Heze, People's Republic of China
| | - Binghan Zhang
- School of Chemistry and Chemical Engineering, Heze University, Heze, People's Republic of China
| | - Dandan Han
- School of Chemistry and Chemical Engineering, Heze University, Heze, People's Republic of China
| | - Longwei Du
- School of Chemistry and Chemical Engineering, Heze University, Heze, People's Republic of China
| | - Lishun Wu
- School of Chemistry and Chemical Engineering, Heze University, Heze, People's Republic of China
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8
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Zheng C, Yong Y, Wang Q, Lin Z, Wang Y, Zhang Y, He C. Removal of Pb(II) by lignin-sodium alginate composite in a fixed-bed column. ENVIRONMENTAL TECHNOLOGY 2024; 45:681-694. [PMID: 36052504 DOI: 10.1080/09593330.2022.2119609] [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: 03/25/2022] [Accepted: 06/20/2022] [Indexed: 06/15/2023]
Abstract
A kind of adsorbent (Hydrogel-I) derived from sodium alginate and modified alkaline lignin (MAL) has been proved to possess a good adsorption performance for Pb(II)-loaded wastewater based on batch experiments. However, practical removal of Pb(II)-loaded-wastewater is a continuous and dynamic process. Herein, Hydrogel-I was further evaluated by packing it into a fixed-bed column. The breakthrough curves were established under different inflow rates (0.159-0.318 L/min), inflow directions (down-inflow mode and top-inflow mode), initial concentrations (5-20 mg/L) of Pb(II), and bed depths (20-60 cm). The results indicated that the slower inflow rate (0.159 L/min), down-inflow mode, lower initial concentration (5 mg/L), and higher bed depth (60 cm) prolonged breakthrough times (tb) and saturation times (ts). Compared to the top-inflow mode, the down-inflow mode guaranteed enough contact between Hydrogel-I and Pb(II). The values of adsorption capacity at tb, ts, and the removal efficiency under the down-inflow mode were higher than that under top-inflow mode by 2.33, 0.78, and 0.07 times, respectively. Hydrogel-I beads exhibited better adsorption performance than other adsorbents by comparing the rate constant (kAB) and the adsorption capacity (N0). The kAB and N0 of Hydrogel-I beads were calculated to be 0.0034 L/(mg·min-1) and 678 mg/L. Hydrogel-I beads showed good regeneration ability in a three-adsorption-desorption cycle. Meanwhile, FT-IR analysis showed that the groups of -NH/-NH2, C=S, and C-S were proved to be the adsorption sites. This study could prove valuable insight into the practical application of Hydrogel-I for dynamic removal of Pb(II) in an inflow-through column.
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Affiliation(s)
- Chunli Zheng
- Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an, People's Republic of China
| | - Yingying Yong
- Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an, People's Republic of China
| | - Qiaorui Wang
- Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an, People's Republic of China
| | - Zishen Lin
- Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an, People's Republic of China
| | - Yujie Wang
- Department of Chemistry, College of Resource and Environment, Baoshan University, Baoshan, People's Republic of China
| | - Youwen Zhang
- Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an, People's Republic of China
| | - Chi He
- Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an, People's Republic of China
- Department of Chemistry, College of Resource and Environment, Baoshan University, Baoshan, People's Republic of China
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9
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Zeng Z, Li Q, Yan J, Huang L, Arulmani SRB, Zhang H, Xie S, Sio W. The model and mechanism of adsorptive technologies for wastewater containing fluoride: A review. CHEMOSPHERE 2023; 340:139808. [PMID: 37591373 DOI: 10.1016/j.chemosphere.2023.139808] [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: 07/04/2023] [Revised: 08/06/2023] [Accepted: 08/11/2023] [Indexed: 08/19/2023]
Abstract
With the continuous development of society, industrialization, and human activities have been producing more and more pollutants. Fluoride discharge is one of the main causes of water pollution. This review summarizes various commonly used and effective fluoride removal technologies, including ion exchange technology, electrochemical technology, coagulation technology, membrane treatment, and adsorption technology, and points out the outstanding advantages of adsorption technology. Various commonly used fluoride removal techniques as well as typical adsorbent materials have been discussed in published papers, however, the relationship between different adsorbent materials and adsorption models has rarely been explored, therefore, this paper categorizes and summarizes the various models involved in static adsorption, dynamic adsorption, and electrosorption fluoride removal processes, such as pseudo-first-order and pseudo-second-order kinetic models, Langmuir and Freundlich isotherm models, Thomas and Clark dynamic adsorption models, including the mathematical equations of the corresponding models and the significance of the models are also comprehensively summarized. Furthermore, this comprehensive discussion delves into the fundamental adsorption mechanisms, quantification of maximum adsorption capacity, evaluation of resistance to anion interference, and assessment of adsorption regeneration performance exhibited by diverse adsorption materials. The selection of the best adsorption model not only predicts the adsorption performance of the adsorbent but also provides a better description and understanding of the details of each part of the adsorption process, which facilitates the adjustment of experimental conditions to optimize the adsorption process. This review may provide some guidance for the development of more cost-effective adsorbent materials and adsorption processes in the future.
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Affiliation(s)
- Zhen Zeng
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Qian Li
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Jia Yan
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Lei Huang
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China.
| | - Samuel Raj Babu Arulmani
- Université de Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), Campus de Beaulieu, 35000, Rennes, France
| | - Hongguo Zhang
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China; Guangzhou University-Linköping University Research Center on Urban Sustainable Development, Guangzhou University, Guangzhou, 510006, China.
| | - Shaojian Xie
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Wenghong Sio
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR, 999078, China
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10
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Indra A, Razi R, Jasmayeti R, Fauzan A, Wahyudi D, Handra N, Subardi A, Susanto I, Purnomo MJ. The practical process of manufacturing poly(methyl methacrylate)-based scaffolds having high porosity and high strength. J Mech Behav Biomed Mater 2023; 142:105862. [PMID: 37086523 DOI: 10.1016/j.jmbbm.2023.105862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 04/14/2023] [Accepted: 04/16/2023] [Indexed: 04/24/2023]
Abstract
Poly(methyl methacrylate) (PMMA)-based scaffolds have been produced using the granule casting method with grain sizes M80-100 and M100-140. The novelty of this study was the application of the cold-cutting method (CCm) to reduce the PMMA granule size. PMMA granule shape, granule size (mesh), and sintering temperature were the primary variables in manufacturing PMMA scaffolds. CCm was applied to reduce the granule size of commercial PMMA, which was originally solid cylindrical, by lowering the temperature to 3.5 °C, 0 °C, and-8.3 °C. PMMA granules that had been reduced were sieved with mesh sizes M80-100 and M100-140. Green bodies were made by the granule casting method using an aluminum mold measuring 8 × 8 × 8 mm3. The sintering process was carried out at temperatures varying from 115 °C to 140 °C, a heating rate of 5 °C/min, and a holding time of 2 h, the cooling process was carried out in a furnace. The characterization of the PMMA-based scaffolds' properties was carried out by observing the microstructure with SEM, analyzing the distribution of pore sizes with ImageJ software, and testing the porosity, the phase, with XRD, and the compressive strength. The best results from the overall analysis were the M80-100 PMMA scaffold treated at a sintering temperature of 130 °C with compressive strength, porosity, and pore size distribution values of 8.2 MPa, 62.0%, and 121-399 μm, respectively, and the M100-140 one treated at a sintering temperature of 135 °C with compressive strength, porosity, and pore size distribution values of 12.1 MPa, 61.2%, and 140-366 μm, respectively. There were interconnected pores in the PMMA scaffolds, as evidenced by the SEM images. There was no PMMA phase change between before and after the sintering process.
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Affiliation(s)
- Ade Indra
- Faculty of Engineering, Department of Mechanical Engineering, Institut Teknologi Padang, Kp Olo, 25143, Padang, Sumatera Barat, Indonesia.
| | - Rivaldo Razi
- Faculty of Engineering, Department of Mechanical Engineering, Institut Teknologi Padang, Kp Olo, 25143, Padang, Sumatera Barat, Indonesia
| | - Riri Jasmayeti
- Faculty of Engineering, Department of Mechanical Engineering, Institut Teknologi Padang, Kp Olo, 25143, Padang, Sumatera Barat, Indonesia
| | - Alfi Fauzan
- Faculty of Engineering, Department of Mechanical Engineering, Institut Teknologi Padang, Kp Olo, 25143, Padang, Sumatera Barat, Indonesia
| | - Didi Wahyudi
- Faculty of Engineering, Department of Mechanical Engineering, Institut Teknologi Padang, Kp Olo, 25143, Padang, Sumatera Barat, Indonesia
| | - Nofriady Handra
- Faculty of Engineering, Department of Mechanical Engineering, Institut Teknologi Padang, Kp Olo, 25143, Padang, Sumatera Barat, Indonesia
| | - Adi Subardi
- Department of Mechanical Engineering, Institut Teknologi Nasional Yogyakarta, Sleman, 55281, Daerah Istimewa Yogyakarta, Indonesia
| | - Iwan Susanto
- Department of Mechanical Engineering, Politeknik Negeri Jakarta, West Java, 16425, Indonesia
| | - M Jalu Purnomo
- Department of Aeronautics, Institut Teknologi Dirgantara Adisutjipto, Yogyakarta, 55198, Indonesia
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11
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Ojok W, P Bolender J, Wasswa J, Ntambi E, Wanasolo W, Moodley B. Facile synthesis and characterization of multi-walled carbon nanotubes decorated with hydroxyapatite from cattle horns for adsorptive removal of fluoride. Heliyon 2023; 9:e14341. [PMID: 36942226 PMCID: PMC10023971 DOI: 10.1016/j.heliyon.2023.e14341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 03/01/2023] [Accepted: 03/01/2023] [Indexed: 03/11/2023] Open
Abstract
Developing a new adsorbent for fluoride removal from cattle horn waste materials by a facile chemical method has shown great potential for fluoride removal. This paper reports the synthesis of multi-walled carbon nanotubes decorated with hydroxyapatite from cattle horns (MWCNT-CH) using a facile chemical method. Characterization studies using standard techniques showed that the composite is mesoporous with a rough morphology and contained MWCNTs uniformly encapsulated by the hydroxyapatite forming a crystalline MWCNT-CH composite. Optimization of fluoride adsorption by the as-synthesized composite using Response Surface Methodology (RSM) showed that a maximum fluoride removal efficiency of 80.21% can be attained at initial fluoride concentration = 10 mg/L, pH = 5.25, adsorbent dose = 0.5 g and a contact time of 78 min. ANOVA indicates contribution of the process variables in descending order as pH > contact time > adsorbent dose > initial fluoride concentration. Langmuir isotherm (R2 = 0.9991) best described the process, and the maximum adsorption capacity of fluoride onto the as-synthesized MWCNT-CH composite was 41.7 mg/g. Adsorption kinetics data were best fitted in the pseudo-second-order kinetic model (R2 = 0.9969), indicating chemisorption. The thermodynamic parameter ( Δ H = 13.95 J/mol and Δ S = 65.76 J/mol/K) showed that fluoride adsorption onto the MWCNT-CH composite was a spontaneous, endothermic, and entropy-driving process. Moreover, the adsorption mechanism involves ion exchange, electrostatic interaction, and hydrogen bonding. Fluoride was successfully desorbed (using 0.1 M NaOH) from the composite in four cycles, retaining fluoride removal efficiency in the fourth cycle of 57.3%.
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Affiliation(s)
- Walter Ojok
- Department of Chemistry, Faculty of Science, Mbarara University of Science and Technology, P.O Box 1410, Mbarara, Uganda
- Department of Chemistry, Faculty of Science, Muni University, P.O Box 725, Arua, Uganda
- School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Durban, 4000, South Africa
- Corresponding author. Department of Chemistry, Faculty of Science, Mbarara University of Science and Technology, P.O Box 1410, Mbarara, Uganda.
| | - James P Bolender
- Department of Chemistry and Biochemistry, University of San Diego, 5998 Alcala Park, San Diego, CA 92110, USA
| | - John Wasswa
- Department of Chemistry, College of Natural Sciences, Makerere University, P.O Box 7062, Kampala, Uganda
| | - Emmanuel Ntambi
- Department of Chemistry, Faculty of Science, Mbarara University of Science and Technology, P.O Box 1410, Mbarara, Uganda
| | - William Wanasolo
- Department of Chemistry, Faculty of Science, Kyambogo University, P.O Box 1 Kyambogo, Kampala, Uganda
| | - Brenda Moodley
- School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Durban, 4000, South Africa
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12
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Hoong Chu K, Ali Hashim M. Modeling of aqueous phase adsorption: Is it time to bid adieu to the Harkins–Jura isotherm? J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.121122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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13
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Lignocellulosic Biomass as Sorbent for Fluoride Removal in Drinking Water. Polymers (Basel) 2022; 14:polym14235219. [PMID: 36501612 PMCID: PMC9738509 DOI: 10.3390/polym14235219] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/17/2022] [Accepted: 10/25/2022] [Indexed: 12/04/2022] Open
Abstract
Water supply to millions of people worldwide is of alarmingly poor quality. Supply sources are depleting, whereas demand is increasing. Health problems associated with water consumption exceeding 1.5 mg/L of fluoride are a severe concern for the World Health Organization (WHO). Therefore, it is urgent to research and develop new technologies and innovative materials to achieve partial fluoride reduction in water intended for human consumption. The new alternative technologies must be environmentally friendly and be able to remove fluoride at the lowest possible costs. So, the use of waste from lignocellulosic biomasses provides a promising alternative to commercially inorganic-based adsorbents-published studies present bioadsorbent materials competing with conventional inorganic-based adsorbents satisfactorily. However, it is still necessary to improve the modification methods to enhance the adsorption capacity and selectivity, as well as the reuse cycles of these bioadsorbents.
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14
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Borgohain X, Rashid H. Rapid and enhanced adsorptive mitigation of groundwater fluoride by Mg(OH) 2 nanoflakes. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:70056-70069. [PMID: 35583754 DOI: 10.1007/s11356-022-20749-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 05/06/2022] [Indexed: 06/15/2023]
Abstract
Fluoride is one of the most abundant anions in groundwater, posing a significant threat to the safe drinking water supply worldwide. Fluoride contamination in drinking water at levels greater than 1.5 mg L-1 causes a variety of serious health problems. To address this problem, the current study deals with the synthesis of Mg(OH)2 nanoflakes by a facile and simple hydrothermal method in the absence of any added template. The sizes of these nanoflakes are in the range of 90 to 200 nm. These nanoflakes are pure and crystalline, possessing hexagonal phase structures. The surface areas of Mg(OH)2 nanoflakes are varying from 75.8 to 108.1 m2 g-1. These Mg(OH)2 nanoflakes exhibit excellent adsorption performance for fluoride over a pH range of 2.0 to 9.0 with a maximum Langmuir adsorption capacity of 3129 mg g-1 at pH 7.0 at 313 K which is the highest for such kind of adsorbent reported so far. The adsorption process is spontaneous and endothermic which primarily follows pseudo-second-order kinetics. The adsorbent is effective in the presence of co-existing anions and is reusable up to the fifth cycle with a minimal loss of adsorption performance. The nanoflakes can effectively remove highly concentrated groundwater fluoride to a permissible limit within a short time which increases the versatility of using these nanoflakes for practical applications.
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Affiliation(s)
- Xavy Borgohain
- Department of Chemistry, Rajiv Gandhi University, Rono Hills, Doimukh, Itanagar, Arunachal Pradesh, 791 112, India
| | - Harunar Rashid
- Department of Chemistry, Rajiv Gandhi University, Rono Hills, Doimukh, Itanagar, Arunachal Pradesh, 791 112, India.
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15
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Yaashikaa PR, Senthil Kumar P, Karishma S. Review on biopolymers and composites - Evolving material as adsorbents in removal of environmental pollutants. ENVIRONMENTAL RESEARCH 2022; 212:113114. [PMID: 35331699 DOI: 10.1016/j.envres.2022.113114] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 03/03/2022] [Accepted: 03/10/2022] [Indexed: 06/14/2023]
Abstract
The presence of pollutants and toxic contaminants in water sources makes it unfit to run through. Though various conventional techniques are on deck, development of new technologies are vital for wastewater treatment and recycling. Polymers have been intensively utilized recently in many industries owing to their unique characteristics. Biopolymers resembles natural alternative to synthetic polymers that can be prepared by linking the monomeric units covalently. Despite the obvious advantages of biopolymers, few reviews have been conducted. This review focuses on biopolymers and composites as suitable adsorbent material for removing pollutants present in environment. The classification of biopolymers and their composites based on the sources, methods of preparation and their potential applications are discussed in detail. Biopolymers have the potentiality of substituting conventional adsorbents due to its unique characteristics. Biopolymer based membranes and effective methods of utilization of biopolymers as suitable adsorbent materials are also briefly elaborated. The mechanism of biopolymers and their membrane-based adsorption has been briefly reviewed. In addition, the methods of regeneration and reuse of used biopolymer based adsorbents are highlighted. The comprehensive content on fate of biopolymer after adsorption is given in brief. Finally, this review concludes the future investigations in recent trends in application of biopolymer in various fields in view of eco-friendly and economic perspectives.
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Affiliation(s)
- P R Yaashikaa
- Department of Biotechnology, Saveetha School of Engineering, SIMATS, Chennai, 602105, India
| | - P Senthil Kumar
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603110, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603110, India.
| | - S Karishma
- Department of Biotechnology, Rajalakshmi Engineering College, Chennai, 602105, India
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16
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Huang L, Luo Z, Huang X, Wang Y, Yan J, Liu W, Guo Y, Babu Arulmani SR, Shao M, Zhang H. Applications of biomass-based materials to remove fluoride from wastewater: A review. CHEMOSPHERE 2022; 301:134679. [PMID: 35469899 DOI: 10.1016/j.chemosphere.2022.134679] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/12/2022] [Accepted: 04/19/2022] [Indexed: 06/14/2023]
Abstract
Fluoride is one of the essential trace elements for the human body, but excessive fluoride will cause serious environmental and health problems. This paper summarizes researches on the removal of fluoride from aqueous solutions using newly developed or improved biomass materials and biomass-like organic materials in recent years. These biomass materials are classified into chitosan, microorganisms, lignocellulose plant materials, animal attribute materials, biological carbonized materials and biomass-like organic materials, which are explained and analyzed. By comparing adsorption performance and mechanism of adsorbents for removing fluoride, it is found that carbonizing materials and modifying adsorbents with metal ions are more beneficial to improving adsorption efficiency and the adsorption mechanisms are various. The adsorption capacities are still considerable after regeneration. This paper not only reviews the properties of these materials for fluoride removal, but also focuses on the comparison of materials performance and fluoride removal mechanism. Herein, by discussing the improved adsorption performance and research technology development of biomass materials and biomass-like organic materials, various innovative ideas are provided for adsorbing and removing contaminants.
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Affiliation(s)
- Lei Huang
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, PR China
| | - Zhixuan Luo
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, PR China
| | - Xuexia Huang
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, PR China
| | - Yian Wang
- Department of Chemical and Biological Engineering, Energy Institute, and Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Jia Yan
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, PR China
| | - Wei Liu
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, PR China
| | - Yufang Guo
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, PR China
| | | | - Minhua Shao
- Department of Chemical and Biological Engineering, Energy Institute, and Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Hongguo Zhang
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, PR China.
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17
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Designing of hydroxyl terminated triazine-based dendritic polymer/halloysite nanotube as an efficient nano-adsorbent for the rapid removal of Pb(II) from aqueous media. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119407] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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18
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Zandi‐Mehri E, Taghavi L, Moeinpour F, Khosravi I, Ghasemi S. Modification of halloysite nanotubes by hydroxyl terminated triazine‐based dendritic polymer for efficient adsorptive removal of Cd (II) from aqueous media. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Elham Zandi‐Mehri
- Department of Environment, Qeshm Branch Islamic Azad University Qeshm Iran
| | - Lobat Taghavi
- Department of Natural Resources and Environment, Science and Research Branch Islamic Azad University Tehran Iran
| | - Farid Moeinpour
- Department of Chemistry, Bandar Abbas Branch Islamic Azad University Bandar Abbas Iran
| | - Iman Khosravi
- Department of Chemistry, Qeshm Branch Islamic Azad University Qeshm Iran
| | - Saber Ghasemi
- Department of Environment, Bandar Abbas Branch Islamic Azad University Bandar Abbas Iran
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19
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Wei Y, Wang L, Li H, Yan W, Feng J. Synergistic Fluoride Adsorption by Composite Adsorbents Synthesized From Different Types of Materials—A Review. Front Chem 2022; 10:900660. [PMID: 35601557 PMCID: PMC9114667 DOI: 10.3389/fchem.2022.900660] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 04/07/2022] [Indexed: 12/21/2022] Open
Abstract
The reduction of fluoride concentrations in water is one of many concerns. Adsorption is the most widely used technology for fluoride removal and the center to development of adsorption technology is the improvement of adsorbents. This review classifies the typical fluoride removal adsorbents into four types: metal oxides/hydroxides, biopolymers, carbon-based, and other adsorbents. The exploitation of new materials and the synthesis of composite materials are two ways of developing new adsorbents. In comparison to the discovery of novel adsorbents for fluoride adsorption, research into the composite synthesis of different types of conventional adsorbents has proliferated in recent years. The traditional adsorbents used the earliest, metal oxides, can act as active centers in a wide range of applications for modifying and compounding with other types of adsorbents. This study emphasizes reviewing the research on fluoride removal by composite adsorbents synthesized from different types of metal-modified materials. Seven factors were compared in terms of material characterization, initial fluoride concentration, adsorbent dose, pH, temperature, reaction time, and maximum adsorption capacity. The modification of composite adsorbents is facile and the synergistic effect of the different types of adsorbents significantly improves fluoride adsorption capacity. Metal composite adsorbents are synthesized by facile coprecipitation, hydrothermal, or impregnation modification methods. The adsorption mechanisms involve electrostatic attraction, ion exchange, complexation, and hydrogen bonding. The fluoride adsorption capacity of composite adsorbents has generally improved, indicating that most modifications are successful and have application prospects. However, to achieve significant breakthroughs in practical applications, numerous issues such as cost, separation/regeneration performance, and safety still need to be considered.
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20
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Sharma P, Vishvakarma R, Gautam K, Vimal A, Kumar Gaur V, Farooqui A, Varjani S, Younis K. Valorization of citrus peel waste for the sustainable production of value-added products. BIORESOURCE TECHNOLOGY 2022; 351:127064. [PMID: 35351555 DOI: 10.1016/j.biortech.2022.127064] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 03/19/2022] [Accepted: 03/23/2022] [Indexed: 06/14/2023]
Abstract
Globally the generation and mismanagement of waste from fruit processing and post-harvest impose a severe burden on waste management strategies along with environmental pollution, health hazards. Citrus waste is one of such worrying fruit waste, which is rich in several value-added chemicals, including pectin. Pectin is a prebiotic polysaccharide possessing a multitude of health benefits. Citrus pectin has excellent gelling, thickening, water holding capacity, and encapsulating properties, which pave its functionality in versatile industrial fields including food processing and preservation, drug and therapeutic agents, cosmetics, and personal care products. The utilization of citrus wastes to derive valuable bioproducts can offer an effective approach towards sustainable waste management. With the ever-increasing demand, several strategies have been devised to increase the efficiency of pectin recovery from citrus waste. This review article discusses the sources, effect, and technology-mediated valorization of citrus waste, the functional and nutritive application of pectin along with its socio-economic and environmental perspective.
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Affiliation(s)
- Poonam Sharma
- Department of Bioengineering, Integral University, Lucknow 226026 Uttar Pradesh, India
| | - Reena Vishvakarma
- Department of Bioengineering, Integral University, Lucknow 226026 Uttar Pradesh, India
| | - Krishna Gautam
- Center for Energy and Environmental Sustainability, Lucknow 226 029, Uttar Pradesh, India
| | - Archana Vimal
- Department of Bioengineering, Integral University, Lucknow 226026 Uttar Pradesh, India
| | - Vivek Kumar Gaur
- Center for Energy and Environmental Sustainability, Lucknow 226 029, Uttar Pradesh, India; School of Energy and Chemical Engineering, UNIST, Ulsan 44919, Republic of Korea
| | - Alvina Farooqui
- Department of Bioengineering, Integral University, Lucknow 226026 Uttar Pradesh, India
| | - Sunita Varjani
- Gujarat Pollution Control Board, Gandhinagar 382 010, Gujarat, India
| | - Kaiser Younis
- Department of Bioengineering, Integral University, Lucknow 226026 Uttar Pradesh, India.
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21
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Robledo-Peralta A, García-Quiñonez LV, Rodríguez-Beltrán RI, Reynoso-Cuevas L. Zr-Based Biocomposite Materials as an Alternative for Fluoride Removal, Preparation and Characteristics. Polymers (Basel) 2022; 14:polym14081575. [PMID: 35458325 PMCID: PMC9025067 DOI: 10.3390/polym14081575] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 03/24/2022] [Accepted: 04/04/2022] [Indexed: 02/01/2023] Open
Abstract
The development of biocomposite materials used as adsorbents to remove ions in aqueous media has become an attractive option. The biomasses (base materials) are chemically treated and impregnated with metal cations, becoming competitive for fluoride-capture capacity. In this research, Valence orange (Citrus sinensis) and Red Delicious apple (Malus Domestica) peels were modified by alkaline treatment, carboxylation, and impregnation with zirconium (Zr). These materials were characterized morphologically and structurally to understand the modifications in the treated biomasses and the mechanism of fluoride adsorption. The results show changes in surface area and composition, most notably, an increment in roughness and Zr impregnation of the bioadsorbents. After batch experimentation, the maximum capacity of the materials was determined to be 4.854 and 5.627 mg/g for the orange and apple peel bioadsorbent, respectively, at pH 3.5. The experimental data fitted the Langmuir model, suggesting that chemisorption occurs in monolayers. Finally, the characterization of the bioadsorbents in contact with fluoride allowed the replacement of OH species by fluoride or the formation of hydrogen bonds between them as an adsorption mechanism. Therefore, these bioadsorbents are considered viable and can be studied in a continuous system.
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Affiliation(s)
- Adriana Robledo-Peralta
- Department of Sustainable Engineering, Advanced Materials Research Center (CIMAV-Durango), CIMAV 110 Street, Ejido Arroyo Seco, Durango C.P. 34147, Durango, Mexico;
| | - Linda Viviana García-Quiñonez
- CONACYT-Centro de Investigación Científica y de Educación Superior de Ensenada, Unidad Foránea Monterrey, Alianza Centro 504, PIIT, Apodaca C.P. 66629, Nuevo León, Mexico;
| | - René I. Rodríguez-Beltrán
- CONACYT-Centro de Investigación Científica y de Educación Superior de Ensenada, Unidad Foránea Monterrey, Alianza Centro 504, PIIT, Apodaca C.P. 66629, Nuevo León, Mexico;
- Correspondence: (R.I.R.-B.); (L.R.-C.)
| | - Liliana Reynoso-Cuevas
- Catedras CONACYT, Advanced Materials Research Center (CIMAV-Durango), CIMAV 110 Street, Ejido Arroyo Seco, Durango C.P. 34147, Durango, Mexico
- Correspondence: (R.I.R.-B.); (L.R.-C.)
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22
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Recent advances in applications of hybrid natural polymers as adsorbent for perfluorinated compounds removal – review paper. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02820-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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23
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Zhang S, Waterhouse GIN, Xu F, He Z, Du Y, Lian Y, Wu P, Sun-Waterhouse D. Recent advances in utilization of pectins in biomedical applications: a review focusing on molecular structure-directing health-promoting properties. Crit Rev Food Sci Nutr 2021:1-34. [PMID: 34637646 DOI: 10.1080/10408398.2021.1988897] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The numerous health benefits of pectins justify their inclusion in human diets and biomedical products. This review provides an overview of pectin extraction and modification methods, their physico-chemical characteristics, health-promoting properties, and pharmaceutical/biomedical applications. Pectins, as readily available and versatile biomolecules, can be tailored to possess specific functionalities for food, pharmaceutical and biomedical applications, through judicious selection of appropriate extraction and modification technologies/processes based on green chemistry principles. Pectin's structural and physicochemical characteristics dictate their effects on digestion and bioavailability of nutrients, as well as health-promoting properties including anticancer, immunomodulatory, anti-inflammatory, intestinal microflora-regulating, immune barrier-strengthening, hypercholesterolemia-/arteriosclerosis-preventing, anti-diabetic, anti-obesity, antitussive, analgesic, anticoagulant, and wound healing effects. HG, RG-I, RG-II, molecular weight, side chain pattern, and degrees of methylation, acetylation, amidation and branching are critical structural elements responsible for optimizing these health benefits. The physicochemical characteristics, health functionalities, biocompatibility and biodegradability of pectins enable the construction of pectin-based composites with distinct properties for targeted applications in bioactive/drug delivery, edible films/coatings, nano-/micro-encapsulation, wound dressings and biological tissue engineering. Achieving beneficial synergies among the green extraction and modification processes during pectin production, and between pectin and other composite components in biomedical products, should be key foci for future research.
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Affiliation(s)
- Shikai Zhang
- College of Food Science and Engineering, Shandong Agricultural University, Taian, China
| | | | - Fangzhou Xu
- College of Food Science and Engineering, Shandong Agricultural University, Taian, China
| | - Ziyang He
- College of Food Science and Engineering, Shandong Agricultural University, Taian, China
| | - Yuyi Du
- College of Food Science and Engineering, Shandong Agricultural University, Taian, China
| | - Yujing Lian
- College of Food Science and Engineering, Shandong Agricultural University, Taian, China
| | - Peng Wu
- College of Food Science and Engineering, Shandong Agricultural University, Taian, China
| | - Dongxiao Sun-Waterhouse
- College of Food Science and Engineering, Shandong Agricultural University, Taian, China.,School of Chemical Sciences, The University of Auckland, Auckland, New Zealand
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24
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Structure and Applications of Pectin in Food, Biomedical, and Pharmaceutical Industry: A Review. COATINGS 2021. [DOI: 10.3390/coatings11080922] [Citation(s) in RCA: 82] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Pectin is a biocompatible polysaccharide with intrinsic biological activity, which may exhibit different structures depending on its source or extraction method. The extraction of pectin from various industrial by-products presents itself as a green option for the valorization of agro-industrial residues by producing a high commercial value product. Pectin is susceptible to physical, chemical, and/or enzymatic changes. The numerous functional groups present in its structure can stimulate different functionalities, and certain modifications can enable pectin for countless applications in food, agriculture, drugs, and biomedicine. It is currently a trend to use pectin to produce edible coating to protect foodstuff, antimicrobial bio-based films, nanoparticles, healing agents, and cancer treatment. Advances in methodology, use of different sources of extraction, and knowledge about structural modification have significantly expanded the properties, yields, and applications of this polysaccharide. Recently, structurally modified pectin has shown better functional properties and bioactivities than the native one. In addition, pectin can be used in conjunction with a wide variety of biopolymers with differentiated properties and specific functionalities. In this context, this review presents the structural characteristics and properties of pectin and information on the modification of this polysaccharide, its respective applications, perspectives, and future challenges.
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25
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Semenycheva L, Chasova V, Matkivskaya J, Fukina D, Koryagin A, Belaya T, Grigoreva A, Kursky Y, Suleimanov E. Features of Polymerization of Methyl Methacrylate using a Photocatalyst—the Complex Oxide RbTe1.5W0.5O6. J Inorg Organomet Polym Mater 2021. [DOI: 10.1007/s10904-021-02054-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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26
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Mokgehle TM, Madala N, Gitari WM, Tavengwa NT. Advances in the development of biopolymeric adsorbents for the extraction of metabolites from nutraceuticals with emphasis on Solanaceae and subsequent pharmacological applications. Carbohydr Polym 2021; 264:118049. [PMID: 33910751 DOI: 10.1016/j.carbpol.2021.118049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 03/31/2021] [Accepted: 04/03/2021] [Indexed: 12/17/2022]
Abstract
Biopolymers are renowned for their sustainable, biodegradable, biocompatible and most of them have antitoxic characteristics. These versatile naturally derived compounds include proteins, polynucleotides (RNA and DNA) and polysaccharides. Cellulose and chitosan are the most abundant polysaccharides. Proteins and polysaccharides have been applied as emulsifiers. Additional applications of proteins and polysaccharides include cosmetics, food and wastewater treatment for adsorption of dyes and pesticides. However, more interesting applications of biopolymers are emerging, such as use in transport systems for delivery of plant derived nutraceuticals to sites of inflammation, due to its inherent ability to immobilize different biological and chemical systems. This review aims to give a summary on new trends and complement what is already known in the development of polysaccharides and proteins as adsorbents of nutraceutical compounds. The application of polysaccharides/protein containing the adsorbed Solanum derived nutraceutical compounds for drug deliveryis also reviewed.
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Affiliation(s)
- Tebogo Mphatlalala Mokgehle
- Department of Chemistry, School of Mathematical and Natural Sciences, University of Venda, Private Bag X5050, Thohoyandou, 0950, South Africa
| | - Ntakadzeni Madala
- Department of Biochemistry, School of Mathematical and Natural Sciences, University of Venda, Private Bag X5050, Thohoyandou, 0950, South Africa
| | - Wilson Mugera Gitari
- Department of Ecology and Resource Management, School of Environmental Sciences, University of Venda, Private Bag X5050, Thohoyandou, 0950, South Africa
| | - Nikita Tawanda Tavengwa
- Department of Chemistry, School of Mathematical and Natural Sciences, University of Venda, Private Bag X5050, Thohoyandou, 0950, South Africa.
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27
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Arsenic and Fluoride in Groundwater, Prevalence and Alternative Removal Approach. Processes (Basel) 2021. [DOI: 10.3390/pr9071191] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Contamination of drinking water by arsenic and fluoride is a global problem, as more than 300 million people in more than 100 countries have been affected by their presence. These elements are considered the most serious contaminants in drinking water and their removal is a worldwide concern. Therefore, the evaluation of three alternative approaches—electrocoagulation, adsorption by biomaterials, and adsorption by metal oxide magnetic nanoparticles (MNPs)—was performed for arsenic and fluoride removal from groundwater. Arsenic removal from synthetic and groundwater (well water) was accomplished with the three processes; meanwhile, fluoride removal from groundwater was only reported by two methods. The results indicate that an electrocoagulation process is a good option for As (>97%) and F (>90%) removal in co-occurrence; however, the operational conditions for the removal of both pollutants must be driven by those used for fluoride removal. As (80–83%) and F (>90%) removal with the biomaterials was also successful, even when the application objective was fluoride removal. Finally, MNPs (Co and Mn) were designed and applied only for arsenic removal and reached >95%. Factors such as the pH, the presence of interfering ions, and the initial concentration of the contaminants are decisive in the treatment process’s efficiency.
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Naushad M, Ahamad T, Al-Sheetan KM. Development of a polymeric nanocomposite as a high performance adsorbent for Pb(II) removal from water medium: Equilibrium, kinetic and antimicrobial activity. JOURNAL OF HAZARDOUS MATERIALS 2021; 407:124816. [PMID: 33352425 DOI: 10.1016/j.jhazmat.2020.124816] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 11/23/2020] [Accepted: 12/07/2020] [Indexed: 06/12/2023]
Abstract
In the present study, starch based ZnO nancomposite (CSt-ZnO) was synthesized for the efficient removal of Pb(II) ions from aqueous medium. The structure and morphology of CSt-ZnO nancomposite was characterized using SEM, FTIR, TGA, BET, XPS and zeta potential measurements. The effect of contact time, pH, temperature and initial concentration of Pb(II) on the adsorption was studied. The optimum parameters for maximum Pb(II) removal were time-120 min; pH-6; temperature-318 K and Co-20 ppm. The maximum Langmuir adsorption capacity of CSt-ZnO nancomposite was 256.4 mg/g at 298 K. With increasing the temperature from 298 K to 318 K, the maximum adsorption quantity (qm) was improved from 256.4 to 476 mg/g which showed the endothermic nature of Pb(II) adsorption on CSt-ZnO nanocomposite. The sorption isotherm and kinetics model fitting studies, confirmed that data fit well to Freundlich isotherm and pseudo-first-order kinetics models, respectively. Thermodynamic studies inferred a spontaneous and endothermic nature of adsorption. Moreover, the adsorption capacity was 68% even after four adsorption-desorption cycles which revealed the reusable performance of CSt-ZnO was well. The antimicrobial activity of CSt-ZnO nanocomposite was also examined against S. aureus and E. coli.
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Affiliation(s)
- Mu Naushad
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.
| | - Tansir Ahamad
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; School of Science & Technology, Glocal University, Saharanpur, India
| | - Khalid M Al-Sheetan
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
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Bilici Baskan M, Biyikli AR. The adsorption of fluoride from aqueous solutions by Fe, Mn, and Fe/Mn modified natural clinoptilolite and optimization using response surface methodology. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2021; 93:620-635. [PMID: 33037679 DOI: 10.1002/wer.1464] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 09/10/2020] [Accepted: 09/30/2020] [Indexed: 06/11/2023]
Abstract
Natural clinoptilolite was modified using iron, manganese, or iron-manganese for adsorption of fluoride from aqueous solutions. Natural and modified clinoptilolite samples were characterized by X-ray fluorescence spectrometry, scanning electron microscope, X-ray diffraction, and Brunauer-Emmett-Teller. For all modified clinoptilolite samples, the time required to reach equilibrium was determined as 5 hr. The effects of adsorbent dose, pH, and initial fluoride concentration for fluoride adsorption were determined using the Box-Behnken Design. Maximum fluoride removal efficiency was 80.23% at the solution pH of 11, iron-modified clinoptilolite amount of 1.08 g/50 ml and at the initial fluoride concentration of 2 mg/L. Fluoride adsorption on iron-modified clinoptilolite showed good compatibility with the Freundlich isotherm and the pseudo-second-order kinetic model. The adsorption capacity of iron-modified clinoptilolite was found to be 1.72 mg/g for the initial fluoride concentration of 50 mg/L. This study has shown that BBD is an effective and dependable method in determining the optimum conditions for fluoride adsorption. PRACTITIONER POINTS: Response surface methodology is effective in determining the optimum conditions for fluoride adsorption using modified clinoptilolite. Fluoride adsorption on iron-modified clinoptilolite is well described Freundlich isotherm and follows pseudo-second-order kinetic model. Fluoride removal percentage not only depends on the adsorbent dose, but also depends on the initial fluoride concentrations. Regeneration process using acid solution is not very effective for desorption of iron-modified zeolite. The natural clinoptilolite is an effective and economical adsorbent for adsorption of fluoride.
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Gong H, Lin X, Xie Y, Liu L, Zhou J, Liao H, Shang R, Luo X. A novel self-crosslinked gel microspheres of Premna microphylla turcz leaves for the absorption of uranium. JOURNAL OF HAZARDOUS MATERIALS 2021; 404:124151. [PMID: 33032091 DOI: 10.1016/j.jhazmat.2020.124151] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 09/13/2020] [Accepted: 09/28/2020] [Indexed: 06/11/2023]
Abstract
Premna microphylla turcz leaves (PMTL) is a resource-rich, biodegradable, renewable biomass. Here, a microsphere adsorbent was prepared from PMTL by a self-crosslinking method without any addition of chemical cross-linking agent, and characterized by SEM, FTIR, and XPS. The influence of preparation methods and conditions on the properties of the microspheres was studied and the self-crosslinking mechanism was analyzed. The effects of temperature, pH, contact time, uranium concentration, and adsorbent dosage on its adsorption performance toward to uranium were systematically explored. The results showed that PMTL endogenous pectin binding with endogenous Ca2+, Mg2+ and other metal ions to form an 'egg box' structure might be the mechanism of its self-crosslinking to form microspheres. The adsorption isotherms fitted well by the Freundlich model and the experimental maximum adsorption capacity of microspheres was 346.65 mg·g-1 at pH of 5, and kinetics data correlated well with the pseudo-second order model. The adsorption mechanism might be the coordination bonding between the uranium and oxygen-containing groups (hydroxyl and carboxyl groups), and the ion exchange between the uranium and metal ions (mainly Ca2+ and Mg2+). The PMTL microspheres are promising in treating uranium-containing wastewater in a more cost-effective and environmentally friendly manner.
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Affiliation(s)
- Hongying Gong
- School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China; Engineering Research Center of Biomass Materials, Ministry of Education, Mianyang 621010, Sichuan, China
| | - Xiaoyan Lin
- School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China; Engineering Research Center of Biomass Materials, Ministry of Education, Mianyang 621010, Sichuan, China.
| | - Yu Xie
- Engineering Research Center of Biomass Materials, Ministry of Education, Mianyang 621010, Sichuan, China
| | - Lan Liu
- School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China; Engineering Research Center of Biomass Materials, Ministry of Education, Mianyang 621010, Sichuan, China
| | - Jian Zhou
- Engineering Research Center of Biomass Materials, Ministry of Education, Mianyang 621010, Sichuan, China
| | - Hui Liao
- Engineering Research Center of Biomass Materials, Ministry of Education, Mianyang 621010, Sichuan, China
| | - Ran Shang
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China
| | - Xuegang Luo
- School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China; Engineering Research Center of Biomass Materials, Ministry of Education, Mianyang 621010, Sichuan, China
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Muqeet M, Mahar RB, Gadhi TA, Ben Halima N. Insight into cellulose-based-nanomaterials - A pursuit of environmental remedies. Int J Biol Macromol 2020; 163:1480-1486. [DOI: 10.1016/j.ijbiomac.2020.08.050] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 07/29/2020] [Accepted: 08/05/2020] [Indexed: 10/23/2022]
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Ahmed DN, Naji LA, Faisal AAH, Al-Ansari N, Naushad M. Waste foundry sand/MgFe-layered double hydroxides composite material for efficient removal of Congo red dye from aqueous solution. Sci Rep 2020; 10:2042. [PMID: 32029817 PMCID: PMC7005020 DOI: 10.1038/s41598-020-58866-y] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Accepted: 01/15/2020] [Indexed: 11/30/2022] Open
Abstract
We aimed to obtain magnesium/iron (Mg/Fe)-layered double hydroxides (LDHs) nanoparticles-immobilized on waste foundry sand-a byproduct of the metal casting industry. XRD and FT-IR tests were applied to characterize the prepared sorbent. The results revealed that a new peak reflected LDHs nanoparticles. In addition, SEM-EDS mapping confirmed that the coating process was appropriate. Sorption tests for the interaction of this sorbent with an aqueous solution contaminated with Congo red dye revealed the efficacy of this material where the maximum adsorption capacity reached approximately 9127.08 mg/g. The pseudo-first-order and pseudo-second-order kinetic models helped to describe the sorption measurements, indicating that the physical and chemical forces governed the removal process.
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Affiliation(s)
- Dooraid N Ahmed
- Department of Mathematics, College of Education for Pure Sciences, University of Kirkuk, Kirkuk, Iraq
| | - Laith A Naji
- Department of Environmental Engineering, College of Engineering, University of Baghdad, Baghdad, Iraq
| | - Ayad A H Faisal
- Department of Environmental Engineering, College of Engineering, University of Baghdad, Baghdad, Iraq
| | - Nadhir Al-Ansari
- Department of Civil, Environmental and Natural Resources Engineering, Lulea University of Technology, 97187, Lulea, Sweden.
| | - Mu Naushad
- Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.
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Structural, thermal and rheological characterization of bovine serum albumin binding with sodium alginate. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.112123] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Synthesis of Chitosan-Polyvinyl Alcohol Biopolymers to Eliminate Fluorides from Water. Biomolecules 2020; 10:biom10010156. [PMID: 31963674 PMCID: PMC7023337 DOI: 10.3390/biom10010156] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 01/11/2020] [Accepted: 01/12/2020] [Indexed: 11/16/2022] Open
Abstract
The fluoride content in groundwater varies depending on geological configuration. Fluoride problems tend to occur in places where these minerals are most abundant in rocks. The objective of the present work was to synthesize four biopolymers based on chitosan-polyvinyl alcohol (Ch-PVA) cross-linked with sodium tripolyphosphate pentabasic (TPP) and ethylene glycol diglycidyl ether (EGDE) and determine their ability to remove fluoride from water. The characterization of the Ch-PVA beads was performed by way of Scanning Electron Microscopy (SEM) and Fourier-transform infrared spectroscopy (FTIR). The percentage of humidity and the point of zero charge were determined. The Ch-PVA beads showed a surface area of 63.87 m2 g−1, a pore size of 7.6 nm, a point of zero charge of 7.4, and 98.6% humidity. The kinetic adsorption study was adjusted to the pseudo-second-order model and the adsorption equilibrium data were adjusted to the Freundlich adsorption isotherm, showing a maximum fluoride adsorption capacity of 12.64 mg g−1 at pH 7 and 30 °C, for the beads of Ch-PVA-NaOH-TPP. According to the thermodynamic parameters: −∆G°, +∆H° and −∆S°, fluoride adsorption is spontaneous, endothermic in nature and there is no random energy change in the solid/liquid interface during the adsorption process.
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Bonyadi Z, Kumar PS, Foroutan R, Kafaei R, Arfaeinia H, Farjadfard S, Ramavandi B. Ultrasonic-assisted synthesis of Populus alba activated carbon for water defluorination: Application for real wastewater. KOREAN J CHEM ENG 2019. [DOI: 10.1007/s11814-019-0373-0] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Mei L, Peng C, Qiao H, Ke F, Liang J, Hou R, Wan X, Cai H. Enhanced removal of fluoride by zirconium modified tea waste with extrusion treatment: kinetics and mechanism. RSC Adv 2019; 9:33345-33353. [PMID: 35529121 PMCID: PMC9073538 DOI: 10.1039/c9ra07155e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 10/01/2019] [Indexed: 11/21/2022] Open
Abstract
To improve the adsorption efficiency of tea-based biosorbents for removing fluoride in drinking water, the novel and effective adsorbent was formed by treating tea waste with extrusion technology. In this study, the extrusion technology was applied to the preparation of adsorbents for the first time. A low-priced and more efficient adsorbent was prepared by loading zirconium onto extruded tea waste (EXT-Zr). Extruded tea waste increased the surface pore size, which could provide more loading sites for zirconium. The EXT-Zr effectively removed fluoride from water in a pH range of 3.0–10.0, which is wider than the pH range of zirconium-loaded tea waste (Tea-Zr). The adsorption was fitted by a pseudo-second order kinetic model and the Langmuir adsorption model. The maximum adsorption capacity was 20.56 mg g−1. The EXT-Zr adsorbent was characterized by Scanning electron microscopy (SEM), Energy-Dispersive Spectroscopy (EDS), X-ray diffraction (XRD), a Brunauer–Emmett–Teller (BET) method, Fourier-transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) to prove the mechanism of how EXT-Zr adsorbs fluoride. The results proved that EXT-based adsorbent will be effective for the enhanced removal of fluoride in drinking water. Extruded tea waste (EXT) increased the pore size by extrusion technology. Extruded tea waste (EXT-Zr) modified by Zr performed well.![]()
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Affiliation(s)
- Liping Mei
- School of Tea & Food Science and Technology
- Anhui Agricultural University
- State Key Laboratory of Tea Plant Biology and Utilization
- Hefei 230036
- People's Republic of China
| | - Chuanyi Peng
- School of Tea & Food Science and Technology
- Anhui Agricultural University
- State Key Laboratory of Tea Plant Biology and Utilization
- Hefei 230036
- People's Republic of China
| | - Huanhuan Qiao
- School of Tea & Food Science and Technology
- Anhui Agricultural University
- State Key Laboratory of Tea Plant Biology and Utilization
- Hefei 230036
- People's Republic of China
| | - Fei Ke
- School of Tea & Food Science and Technology
- Anhui Agricultural University
- State Key Laboratory of Tea Plant Biology and Utilization
- Hefei 230036
- People's Republic of China
| | - Jin Liang
- School of Tea & Food Science and Technology
- Anhui Agricultural University
- State Key Laboratory of Tea Plant Biology and Utilization
- Hefei 230036
- People's Republic of China
| | - Ruyan Hou
- School of Tea & Food Science and Technology
- Anhui Agricultural University
- State Key Laboratory of Tea Plant Biology and Utilization
- Hefei 230036
- People's Republic of China
| | - Xiaochun Wan
- School of Tea & Food Science and Technology
- Anhui Agricultural University
- State Key Laboratory of Tea Plant Biology and Utilization
- Hefei 230036
- People's Republic of China
| | - Huimei Cai
- School of Tea & Food Science and Technology
- Anhui Agricultural University
- State Key Laboratory of Tea Plant Biology and Utilization
- Hefei 230036
- People's Republic of China
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