Recycling of Nanosilica from Agricultural, Electronic, and Industrial Wastes for Wastewater Treatment

Elnasr, Tarek A. Seaf; Gomaa, Hassanien; Emran, Mohammed Y.; Motawea, Mohamed M.; Ismail, Abdel-Rahman A. M.

doi:10.1007/978-3-030-68031-2_12

Cited by 19 publications

(5 citation statements)

References 164 publications

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“…Nano-Silica composite has a wide range of applications such as optical communications, microelectronics, thinfilm technology, and industries (Barik et. al., 2008;Seaf El-Nasr et. al., 2021).…”

Section: Introductionmentioning

confidence: 99%

Eco-Friendly Synthesis of Silica-Polysaccharide Nano-composites using Sodium Silicate and Aloe Vera Gel for Self-cleaning Solar energy Mirrors

Badr,

Khalil,

Khalil

et al. 2024

Preprint

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Synthesis of silica-Nano-composites from both sodium silicate and Aloe Vera gel via low-cost sol-gel silica nanoparticles (Si NPs) was investigated to be used as self-cleaning for solar mirrors. The produced materials were analyzed by (EDX) which indicates the existence of a high content of silicon in the Nano-silica composites. FTIR was utilized to obtain the structure characterization of our samples, whereas the poly-siloxane groups already formed and found the backbone of Si-O-Si. X-ray diffraction (XRD) was also utilized to identify the silica structure, whereas a broad peak and an amorphous phase were created. The images of Nano-silica content embedded in polymer with different magnifications were obtained using (SEM). The surface roughness of the Nano-silica composites was attained using the Atomic Force microscope (AFM). The hydrophobicity of the solar mirror surface was investigated using the contact angle measurement and zeta potential measurement. The results obtained by both Thermo-gravimetric analysis and data thermal analysis (TGA & DTA) illustrated that the Nano-silica composite with 40 ml of Aloe Vera gel is more stable than that obtained of Nano silica composites with 20 ml and 60 ml of Aloe Vera gel. The reflectance of solar mirrors after using Nano-silica composite assures high efficiency. The novelty of this study is that it makes incorporation between sol-gel and green synthesis to manufacture SiO2 NPs from their first product (Na2SiO3) with high yield, low cost, and faster.

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Section: Introductionmentioning

confidence: 99%

Eco-Friendly Synthesis of Silica-Polysaccharide Nano-composites using Sodium Silicate and Aloe Vera Gel for Self-cleaning Solar energy Mirrors

Badr,

Khalil,

Khalil

et al. 2024

Preprint

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“…Research into nanoparticles has seen a significant surge since the late 20th century, a development largely facilitated by advancements in techniques like electron microscopy [ 1 ]. Silicon Dioxide Nanoparticles (SiNPs) stand out in this realm, often derived from solid waste, alongside other materials such as carbon-based nanomaterials and metal oxides, including CuO, Ag 2 O, and FeO [ 2 ]. The biocompatibility of SiNPs has been confirmed through multiple studies.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study on Rice Husk, as Agricultural Waste, in the Production of Silica Nanoparticles via Different Methods

Yuan,

Hou,

Liu

et al. 2024

Materials

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This study explores the conversion of agricultural waste into valuable industrial precursors, specifically focusing on the production of silica nanoparticles from rice husk (RH) via calcination and sol–gel processes. The synthesized particles underwent detailed analysis to assess their chemical composition, structural features, morphological characteristics, and size distribution. This comparative analysis evaluates the effectiveness of various methods in generating silica from RH and examines the impact of different drying techniques, including freeze-drying and conventional thermal drying, on the properties of the resulting silica nanoparticles. Utilizing a combination of sol–gel and freeze-drying techniques produced spherical nanoparticles with diameters of 10 to 20 nm, characterized by size uniformity, clear contours, and minimal aggregation. X-ray diffraction (XRD) analysis identified the amorphous nature of the silica, as evidenced by diffraction peaks typical of amorphous silica in the RH-derived samples processed via different methods. Significantly, the XRD patterns of the calcination-derived silica showed no foreign peaks, indicating a purer amorphous state. The findings of this study are anticipated to contribute to the development of innovative and efficient silica nanomaterials, fostering the sustainable use of agricultural waste.

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“…However, dyes are highly soluble in water, preventing the penetration of sunlight and the re-oxygenation of the marine system (Eltaweil et al 2022a). Therefore, the disposal of diversified types of dyes into water bodies even with a minimal concentration jeopardizes human health and marine life (Seaf El-Nasr et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Sandwich-like construction of a new aminated chitosan Schiff base for efficient removal of Congo red

et al. 2023

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Herein, a novel sandwich-like α-ketoglutaric acid Schiff base-aminated chitosan composite (α-kGl-AmCsSB) was fabricated by reacting α-ketoglutaric acid and aminated chitosan. The as-fabricated α-kGl-AmCsSB was inspected by diversified characterization tools to determine its morphology, surface charge, and chemical composition as well as define the linkage pathway between α-kGl and AmCs. The SEM images demonstrated a spongy network of AmCs with interconnected pores structure which turned to a quite rough surface due to the linkage of α-kGl to the free amine groups of AmCs. Notably, the XPS and FTIR spectra suggested the linkage of α-kGl to the amine group of AmCs. The experimental results implied the superior adsorption efficiency of Congo red (CR) onto α-kGl-AmCsSB since the maximum adsorption capacity (qmax) reached 434.78 mg/g at 25 °C and pH 3. Based on kinetics data, the adsorption of CR on α-kGl-AmCsSB followed pseudo-second-order model. Furthermore, D-R model infers that the CR adsorption onto α-kGl-AmCsSB occurred via physical interactions since the E value < 8 kJ/mol. The recyclability test was implemented for five cycles with R% > 72%. More importantly, the adsorption mechanism of CR onto α-kGl-AmCsSB was proposed and discussed. Ultimately, the novel sandwich-like α-kGl-AmCsSB exhibited advanced adsorption performance toward CR along with excellent reusability. Based on these results, we recommend more modifications on α-kGl-AmCsSB for exploiting its remarkable advantages and applying it on a large scale.

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Recycling of Nanosilica from Agricultural, Electronic, and Industrial Wastes for Wastewater Treatment

Cited by 19 publications

References 164 publications

Eco-Friendly Synthesis of Silica-Polysaccharide Nano-composites using Sodium Silicate and Aloe Vera Gel for Self-cleaning Solar energy Mirrors

Eco-Friendly Synthesis of Silica-Polysaccharide Nano-composites using Sodium Silicate and Aloe Vera Gel for Self-cleaning Solar energy Mirrors

A Comparative Study on Rice Husk, as Agricultural Waste, in the Production of Silica Nanoparticles via Different Methods

Sandwich-like construction of a new aminated chitosan Schiff base for efficient removal of Congo red

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