Опубликована: Янв. 1, 2023
Язык: Английский
Materials Today Communications, Год журнала: 2024, Номер 38, С. 108385 - 108385
Опубликована: Фев. 16, 2024
Язык: Английский
Процитировано
14
Discover Water, Год журнала: 2025, Номер 5(1)
Опубликована: Апрель 14, 2025
Abstract Adequate wastewater treatment technologies are essential for addressing toxic dyes’ environmental pollution and health hazards. Azo dyes which contain one or more azo bonds widely used in the textile. However, they known to be carcinogenic, mutagenic, highly human health. Traditional treatments methods, such as coagulation, flocculation, biological treatment, often fail eliminate dye molecules due their complex structures strong chemical stability. Therefore, there is a need advanced solutions. Polymer nanocomposites have emerged promising alternative, offering high surface area, tunable properties, exceptional adsorption capacities. This review describes recent reports on synthesis, characterization, application of polymer removal, incorporating key findings remarkable capacity gelatin nanocomposite (950.5 mg/g). most studies were synthetic solutions with limited validation real industrial effluents. paper also future research development scalability, cost analysis, biodegradability practical use. aims guide toward effective adsorbent, eco-friendly, scalable removal.
Язык: Английский
Процитировано
1
Polymers, Год журнала: 2023, Номер 15(18), С. 3756 - 3756
Опубликована: Сен. 14, 2023
This paper presents sustainable technology for environmentally friendly composite production. Biobased unsaturated polyester resin (b-UPR), synthesized from waste polyethylene terephthalate (PET) glycosylate and renewable origin maleic anhydride (MAnh) propylene glycol (PG), was reinforced with unmodified vinyl-modified biosilica nanoparticles obtained rice husk. The structural morphological properties of the particles, b-UPR, as well composites, were characterized by Fourier-transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR), scanning electron microscopy (SEM), transmission (TEM) techniques. study influence modification on mechanical composites supported hardness modeling. Improvement tensile strength b-UPR-based at 2.5 wt.% addition modified vinyl silane, named “b-UPR/SiO2-V” composite, has been achieved 88% increase. thermal aging process applied to b-UPR/SiO2-V which simulates use over product’s lifetime, leads deterioration that used fillers in commercial (c-UPR). grinded artificially aged b-UPR filler c-UPR production a table top layer outstanding properties, i.e., impact resistance microhardness, fire rated V-0 category according UL-94 test. Developing are chemically sources is important aspect preserving environment existing resources extending their life cycle.
Язык: Английский
Процитировано
16
Chemosphere, Год журнала: 2024, Номер 362, С. 142144 - 142144
Опубликована: Апрель 25, 2024
Язык: Английский
Процитировано
4
Applied Sciences, Год журнала: 2025, Номер 15(6), С. 3093 - 3093
Опубликована: Март 12, 2025
The removal of the As(V) and Iprodione fungicide onto EGS@APTES-GT, obtained by amino-modified expanded glass spheres (EGS) modified with goethite, was studied in this work. Material characterization performed using SEM/EDS, XRD, FTIR techniques. adsorption capacities 51.01 94.28 mg g−1, for at 25 °C, respectively, were achieved. A kinetic study indicated lower intraparticle diffusional transport resistance. Physisorption is dominant mechanism removal, while surface complexation As(V). disposal effluent water after five adsorption–desorption cycles attained through photocatalytic degradation arsenate precipitation. Exhausted processed goethite acidic dissolution grinding, used as a reinforcing filler composites production based on commercial unsaturated polyester resin (UPe). An improvement mechanical properties observed, gradual increase tensile strength, reaching maximum 25.9% UPe 10 wt.% ground exhausted adsorbent compared to pure UPe. overarching concept defined aspiration develop technologies that address all output flows advanced processes. Thus, combination wastewater treatment potentially marketable successfully achieved both low environmental impact implementation circular economy.
Язык: Английский
Процитировано
0
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
0
Molecules, Год журнала: 2025, Номер 30(10), С. 2138 - 2138
Опубликована: Май 13, 2025
Environmental pollution remains one of the most pressing challenges facing modern society, with removal toxic substances from water sources being particular concern. In this study, a composite material was synthesized by combining Cu-Al layered double hydroxides (CuAl-LDHs) modified silica particles, aiming to develop an efficient and environmentally friendly adsorbent for phosphate arsenate ions water. CuAl-LDH, Cu2+/Al3+ molar ratio 2:1, using co-precipitation method in presence maintaining LDH/SiO2 mass 2:1. The particles were functionalized 3-glycidyloxypropyltrimethoxysilane (GLYMO) followed modification polyethyleneimine (PEI) enhance their adsorption properties. X-ray diffraction (XRD) confirmed successful deposition CuAl-LDH on surface, while scanning electron microscopy (SEM) revealed porous structure uniform LDH. Adsorption experiments performed evaluate efficiency under varying conditions. Equilibrium capacities, based Langmuir isotherm model, determined be 44.6 mg·g-1 (PO43-) 32.3 (As(V)) at 25 °C. sorption behavior better described Freundlich which yielded KF values 15.4 L·mg-1 13.9 arsenate. Both batch kinetic high composite, demonstrating its potential as promising treatment applications.
Язык: Английский
Процитировано
0
International Journal of Molecular Sciences, Год журнала: 2024, Номер 25(21), С. 11837 - 11837
Опубликована: Ноя. 4, 2024
The adsorption efficiency of Cr(VI) and anionic textile dyes onto MgAl-layered double hydroxides (LDHs) MgAl-LDH coated on bio-silica (b-SiO2) nanoparticles (MgAl-LDH@SiO2) derived from waste rice husks was studied in this work. material characterized using field-emission scanning electron microscopy (FE-SEM/EDS), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), photoelectron spectroscopic (XPS) techniques. capacities MgAl-LDH@SiO2 were increased by 12.2%, 11.7%, 10.6%, 10.0% the processes Cr(VI), Acid Blue 225 (AB-225), Violet 109 (AV-109), Green 40 (AG-40) dye removal versus MgAl-LDH. obtained results indicated contribution b-SiO2 to development active surface functionalities A kinetic study lower intraparticle diffusional transport resistance. Physisorption is dominant mechanism for removal, while complexation dominates removal. disposal effluent water after five adsorption/desorption cycles attained enzymatic decolorization, photocatalytic degradation dyes, chromate reduction, satisfying prescribed national legislation. Under optimal conditions immobilized horseradish peroxidase (HRP), efficient decolorization solutions containing AB-225 AV-109 achieved. Exhausted processed dissolution/precipitation Mg Al hydroxides, residual silica used as a reinforcing filler polyester composites. fire-proofing properties composites with also improved, which provides closed loop zero generation. wastewater treatment technologies production potentially marketable led successful achievement both low environmental impacts circular economy implementation.
Язык: Английский
Процитировано
2
Journal of Environmental Management, Год журнала: 2024, Номер 371, С. 123174 - 123174
Опубликована: Ноя. 5, 2024
Язык: Английский
Процитировано
2
Vietnam Journal of Catalysis and Adsorption, Год журнала: 2024, Номер 13(1), С. 123 - 128
Опубликована: Март 30, 2024
Research results on the adsorption process of halloysite material in Thach Khoan, Phu Tho area for Pb2+ showed that this has good ability with an efficiency 90.75% under optimal conditions. The desorption from Pb-adsorbed and also recovery metallic Pb by electrochemical precipitation method been studied. electrolysis was carried out constant current mode 0.01M HCl electrolyte system including a working electrode as Au (geometric 1 cm2), reference silver/silver chloride electrode, counter Pt grid. effects intensity, mass adsorbed material, time were evaluated. obtained show that, conditions: density 5 mA/cm2, 0.3 g, h, temperature 25oC, reached 93.67%. result shown is effective desorbing recovering Pb.
Язык: Английский
Процитировано
0