Preparation of activated aluminum-coated basalt fiber mat for defluoridation from drinking water

Abstract

Alumina/basalt fiber mat composite (ABFMC) was fabricated by loading activated alumina (AA) on basalt fiber mat (BFM) via sol-gel method for fluoride removal. ABFMC and AA were characterized, and their performance for fluoride removal from aqueous solution was evaluated at different initial fluoride concentration and contact time. The loading capacity of AA on BFM increased with the increase in the sol viscosity, and the sol viscosity was optimized at 3.9 mPa s, whose corresponding loading percentage was 60.25 %. The results from the present study exhibit that ABFMC has shown good adsorption capacity for fluoride removal from aqueous solution. Experimental data revealed that the fluoride sorption on ABFMC was rapid, and 98.7 % fluoride removal was achieved within 30 min, whereas they were 96.8 % and 60 min in case of AA, respectively. The fluoride absorbed of ABFMC is well compared with that of most conventional materials and AA. The maximum of fluoride adsorbed on ABFMC was 1.872 mg/g. Adsorption isotherm analyses indicate that the adsorption of fluoride on ABFMC could be best described with the Langmuir isotherm, which suggested that the fluoride may create a monolayer layer on ABFMC. The adsorption kinetics was best described by the pseudo-second-order kinetic model followed by both intraparticle diffusion and film diffusion as the rate-controlling rate step. Graphical Abstract 0 50 100 150 200 250 60 70 80 90 100 Time(min) Fluoride removal (%) ABFMC AA

Thermal properties, microstructure analysis, and environmental benefits of basalt fiber reinforced concrete

“…The catalytic performance may be completely used with no secondary pollution by increasing the possibility of the catalyst coming into contact with the pollutants. 85 All of the combinations under study had a progressive rise in eco-efficiency as a result of the change in reinforcement dose, as seen in Figure 11. For flexural and compressive strength, BF-0.5% has the lowest environmental costs per MPa, followed by BFs 1.5%.…”

“…The catalytic performance may be completely used with no secondary pollution by increasing the possibility of the catalyst coming into contact with the pollutants. 85…”

A Review on Basalt Fiber Composites and Their Applications in Clean Energy Sector and Power Grids

“…Furthermore, because BF is resistant to oxidation, it can be employed as a catalyst carrier in wastewater treatment and gas purification. By improving the contact chance between the catalyst and pollutants, the catalytic performance may be fully exploited, and there is no secondary pollution [42]. We should continue to work on BF applications in environmental protection, such as environmental-friendly building material and automobile exhaust gas treatment, in the future.…”

Evaluation of Insulation against Contact Heat, Radiant Heat and Sensory Comfort of Basalt Fabric-Based Composites with Parylene C Coating

“…Basalt fabrics are exceptional materials that fit into a new range of composite materials and products. A particular area of application is protective equipment [10][11][12][13][14][15][16]. Protective clothing is an effective barrier between the human body and the environment [17,18].…”