Synthesis Of Porous Cellulose Beads Intercalated With Calcium Carbonate Nanoparticles From Sodium Hydroxide/Urea Solution For Dye Adsorption
Dyes have become widely used in the textile industry over the last few decadesand generates 200,000 tonnes of dye waste annually. Considering the situation, the adsorption process by using biodegradable alpha-cellulose (α-cellulose) is chosen for removing dye from wastewater due to its economic fe...
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| Main Author: | |
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| Format: | Monograph |
| Language: | English |
| Published: |
Universiti Sains Malaysia
2021
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| Subjects: | |
| Online Access: | http://eprints.usm.my/54739/1/Synthesis%20Of%20Porous%20Cellulose%20Beads%20Intercalated%20With%20Calcium%20Carbonate%20Nanoparticles%20From%20Sodium%20Hydroxide%20Urea%20Solution%20For%20Dye%20Adsorption_Gan%20Wei%20Chee_K4_2021_ESAR.pdf http://eprints.usm.my/54739/ |
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| Summary: | Dyes have become widely used in the textile industry over the last few decadesand generates 200,000 tonnes of dye waste annually. Considering the situation, the adsorption process by using biodegradable alpha-cellulose (α-cellulose) is chosen for
removing dye from wastewater due to its economic feasibility and absence of secondary pollution. However, a low degree of substitution occurs since this effect of α-cellulose's supramolecular structure is less reachable to reagents. Thus, the goals of this study are to synthesise and characterise porous cellulose beads (PCBs) for methylene blue (MB) dye removal, and to study the effects of calcium carbonates
(CaCO3) nanoparticles incorporated on PCBs properties and MB dye removal. In this study, PCBs with various amounts of CaCO3 nanoparticles (0.01 wt%, 0.03 wt% and 0.05wt%) as green-based adsorbents were successfully fabricated. When the incorporation of 0.05 wt% of CaCO3 nanoparticles on PCBs, the increment of
maximum removal efficiency (R) of MB from 88.12% to 97.04% at the adsorbent dosage of 0.06 g and equilibrium time of 3 hr. The experimental data of adsorption kinetic studies on MB using PCBs samples were imitated by pseudo-second-order, with R2
values of higher than 0.99, demonstrating that the adsorption process is governed by chemisorption. The maximum adsorption capacity of PCBs with 0.05 wt% of CaCO3 nanoparticles loading determined by pseudo-second-order was 4.91 mg/g. As a result, the findings of this study resulted in a simple and effective method for producing PCBs with CaCO3 nanoparticles loading. |
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