Preliminary Study of Chitosan Coating Silica Derived from Geotermal Solid Waste

Silviana, Silviana; Noorpasha, Annisya; Rahman, Muhammad Miftahur

doi:10.13189/cea.2020.080311

Cited by 14 publications

(6 citation statements)

References 19 publications

(14 reference statements)

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“… 43 It is released from the geothermal power plant in Dieng. 44 The geothermal silica is widely used in various applications, such as an adsorbent, 45 chitosan coating, 46 preparation of silicon, 47 synthesis of silica xerogel, 48 synthesis of silica aerogel, 49 synthesis of mesoporous silica, 50 , 51 and superhydrophobic coating. 52 Meanwhile, fly ash, 53 bamboo leaves, 54 , 55 rice husks, 24 , 56 , 57 and bagasse were extensively studied for their silica content.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the Sound Absorption Coefficient (SAC) from Cellulose–Silica Aerogel Using the Box–Behnken Design

et al. 2022

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Noise pollution, which has become a major environmental issue in urban areas, can be minimized using acoustic insulation derived from cellulose–silica aerogel. The raw materials required in the process include waste newspaper-based cellulose, geothermal silica, and NaOH/ZnO solution. Therefore, this study investigates the effect of cellulose, silica, and ZnO concentrations on optimizing the sound absorption coefficient (SAC) using the Box–Behnken design (BBD). The results showed that the optimum conditions were obtained at 39.8578 wt % cellulose, 16.5428 wt % silica, and 0.5684 wt % ZnO. The impedance test for the cellulose aerogel and cellulose–silica aerogel showed SAC values of 0.59 and 0.70, respectively, and were characterized by XRD, FTIR, BET–BJH, SEM–EDX, and TG. The results of XRD and FTIR data indicate that the product was cellulose–silica aerogel, and the SEM micrographs showed that silica particles were attached to the fiber surface. Furthermore, type IV isotherms were observed in the cellulose–silica aerogel, typical of mesoporous materials. The presence of silica strengthened the aerogel structure, improved its thermal stability, and increased the surface area but decreased its pore size.

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Section: Introductionmentioning

confidence: 99%

Optimization of the Sound Absorption Coefficient (SAC) from Cellulose–Silica Aerogel Using the Box–Behnken Design

et al. 2022

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“…The performance of several different aspects is improved when SNPs are added to concrete mixes. Better dispersion within the concrete matrix is made possible by SNPs' mesoporous structure and large surface area, which improve the mechanical qualities of the material, including durability and compressive strength [100,101]. Furthermore, the deliberate insertion of SNPs reduces the problem of early-age shrinkage in concrete, which enhances long-term performance and lessens cracking.…”

Section: Applications Of Snps In Agriculture Areamentioning

confidence: 99%

Advances in modified silica nanoparticles utilization for various applications: Now and future

Silviana,

Dalanta

2024

E3S Web Conf.

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The review article explores the multifaceted applications of silica nanoparticles (SNPs) across diverse industries, emphasizing their catalytic role in transformative advancements. Green nanotechnology principles are crucial for sustainable SNP synthesis, with a focus on utilizing natural extracts and bio-agents. Standardization and enhanced collaboration between industry and academia are pivotal for realizing the broader potential of SNPs. In the biomedical realm, SNPs exhibit exceptional capabilities in drug delivery and diagnostics, promising significant medical advancements. Safe integration necessitates collaborative efforts in safety assessments, long-term studies, and standardized testing. The exploration of SNP-based advanced coatings hints at industry-specific applications, with a recommendation for continued research into new capabilities and compatibility. SNPs in Li-ion batteries show promise for energy storage, urging further investigation into scalability and long-term performance. Agriculture benefits from SNP applications in precision farming, emphasizing the need for environmentally conscious formulations. In nanocomposite materials, SNPs enhance mechanical properties, advocating collaborative research for standardization and optimization. The adaptability of SNP-based smart coatings in aerospace and automotive industries requires exploration of new functionalities and seamless integration. In conclusion, SNPs hold promising prospects in healthcare, energy storage, and agriculture, emphasizing the necessity of collaborative efforts, sustained research, and a commitment to responsible and innovative SNP integration for a technologically advanced and environmentally conscious future.

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“…In a geothermal power slurry can be produced up to 10 tons/day from which approximately 10% solid is produced [1]. Silica is used for various purposes over many fields such as glass coating [5], xerogel silica [6], superhydrophobic coating [7][8][9][10][11], aerogel silica [12], adsorbent of organic compounds [13,14], silica gel in the food industry, sensors, packaging, carrier media [15], and mesoporous silica [16][17][18], cement mixture [19,20]; and environmentally friendly precursors [21]. It can also be formed into silicone (Si) as a material in electronic equipment, photovoltaic cells, the anode for lithium batteries [22], solar grade [23], and semiconductor materials.…”

Section: Introductionmentioning

confidence: 99%

Silicone for Lithium-Ion Battery Anode Derived from Geothermal Waste Silica through Magnesiothermic Reduction and Double Stages in Acid Leaching

Silviana

Ma'ruf

Dalanta

2022

DDF

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The utilization of geothermal silica as the silica source to synthesize silicone as lithium-ion battery anode component was comprehensively studied. Silicone conversion was performed using magnesiothermic reduction at a temperature of 650 °C for 7 h. The applied Mg:SiO2 mole ratio on magnesiothermic reduction were 1.6:1, 2:1, and 2.5:1. The purification treatments of silicone product were conducted using two stages of acid leaching using HCl and a mixture of HF and acetic acid. In lithium-ion battery anode preparation, the ratio of Si to graphite employed 100:0; 90:10; 50:50; 10:90; and 0:100. The best yield and the conversion of silicone were 26.46% for the yield and 85.60% for the conversion by using 2:1 of Mg:SiO2 ratio. In the purification treatments, silicone yield of 29.45% with silicone purity of 58.9% was achieved using HCl, and silicone yield of 25.97% with silicone purity of 98% was achieved by using mixed solution of HF and acetic acid. The best battery performance in term of specific capacity was found by applying Si:graphite ratio of 100:0 with the value of first cycle of 358.5 mAh/g in this research. These findings present the reliability and feasibility of the geothermal solid waste and acid leaching treatments to generate the high quality of silicone for lithium-ion battery anode component.

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Preliminary Study of Chitosan Coating Silica Derived from Geotermal Solid Waste

Cited by 14 publications

References 19 publications

Optimization of the Sound Absorption Coefficient (SAC) from Cellulose–Silica Aerogel Using the Box–Behnken Design

Optimization of the Sound Absorption Coefficient (SAC) from Cellulose–Silica Aerogel Using the Box–Behnken Design

Advances in modified silica nanoparticles utilization for various applications: Now and future

Silicone for Lithium-Ion Battery Anode Derived from Geothermal Waste Silica through Magnesiothermic Reduction and Double Stages in Acid Leaching

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