Cross-linked chitosan/marble powder composites for the adsorption of Dimozol Blue

During marble mining, processing, cutting and polishing, more than 12 MT (million tons) of marble waste is produced in the state of Rajasthan, India, which is now a major environmental issue. The marble waste used in the present study was collected from Makrana marble mining, Rajasthan. The major mineral present in marble waste were calcite (CaCO 3), dolomite (CaMg(CO 3) 2) and quartz (SiO 2). Composite materials were made using marble waste with epoxy resin. Textile fibres such as jute, cotton and glass fibres were used as reinforcing materials. The hybrid composites exhibited 54% better flexural strength (48.48 MPa) than the commercially available medium density fibre boards (24.23 MPa). Water absorption and thickness swelling values were less than 1% in green composites. The microstructural study of fractured surface of hybrid composite showed good interfacial bonding between the marble waste, fibre and the matrix. The findings of this study showed a promising outcome in introducing a new class of hybrid green composites to the composite industry and society for multifunctional applications, creating an avenue for circular economy with major environmental benefits.

show abstract

“…3. It was observed that [30,31]. The absorption band at 1092 cm −1 can be attributed to symmetric stretching of carbonate group.…”

Section: Ftir Analysismentioning

confidence: 98%

Sustainable approach towards utilizing Makrana marble waste for making water resistant green composite materials

2020

View full text Add to dashboard Cite

show abstract

Removal of Humic Acid from Water by Adsorption Using Chitosan and Metal Organic Framework ZIF 8 Loaded Chitosan Adsorbents

Hilmioglu,

Yumat

2024

Water Air Soil Pollut

View full text Add to dashboard Cite

Water is the most necessary need for life on the earth. There are a lot of organic pollutants in water. One of the organic pollutants is natural organic substances. Humic acid, a natural organic substance, turns into very harmful substances along with other pollutants. In this study, the humic acid removal from aqueous solution by adsorption using chitosan and chitosan/ZIF 8 composite spheres was examined. Chitosan spheres cross-linked with epichlorohydrin (ECH) and composite spheres consisting of metal organic framework ZIF8 and chitosan were prepared as adsorbents. Equilibrium, kinetic, and thermodynamic studies were investigated for humic acid adsorption by pristine chitosan-ECH and composite chitosan/ZIF 8 adsorbents. Chemical adsorption was found to be compatible with the Freundlich isotherm model and the pseudo-first-order kinetic model for pure chitosan adsorbents. Studies were carried out using chitosan/ZIF8 composite adsorbent, and the most suitable models for chemical adsorption were determined as Langmuir isotherm and pseudo-second order kinetic model. The response surface method was applied with the design expert program to determine the optimum experimental conditions. The adsorption tests were carried out using chitosan-ECH, ZIF 8 and chitosan/ZIF 8 adsorbents for specified optimum conditions, and the humic acid removal was determined as 95.1%, 98.3%, and 97.3%, respectively. In addition, desorption was performed using chitosan-ECH and chitosan/ZIF 8 spheres, and the desorption efficiency was found to be 20.9% and 82.5%, respectively. It has been observed that the developed adsorbents have potential in removing humic acid from water.

show abstract

Green calcium-based photocatalyst derived from waste marble powder for environmental sustainability: A review on synthesis and application in photocatalysis

Khan

Bhoi²,

Saharan³

et al. 2022

Environ Sci Pollut Res

View full text Add to dashboard Cite

Cross-linked chitosan/marble powder composites for the adsorption of Dimozol Blue

Cited by 4 publications

References 20 publications

Sustainable approach towards utilizing Makrana marble waste for making water resistant green composite materials

Sustainable approach towards utilizing Makrana marble waste for making water resistant green composite materials

Removal of Humic Acid from Water by Adsorption Using Chitosan and Metal Organic Framework ZIF 8 Loaded Chitosan Adsorbents

Green calcium-based photocatalyst derived from waste marble powder for environmental sustainability: A review on synthesis and application in photocatalysis

Contact Info

Product

Resources

About