Adsorption of methylene blue onto sugarcane bagasse‐based adsorbent materials

Abstract

Sugarcane bagasse (SB) before and after alkaline treatment has been investigated for the removal of methylene blue (MB) from aqueous solutions. The results showed that the adsorption was chemical in nature and the OH, C=O, and C-O groups were particularly responsible for MB dye adsorption. The optimum concentration of MB solution was fixed at 0.1 gr/50 mL in both treated and untreated SB. Batch adsorption studies are used to derive the optimum adsorption conditions. A contact time of 90 min, a pH range from 5 to 9, a dose of 0.1 g, and an initial concentration of the MB of 100 ppm were chosen. The amount of adsorbed MB dye on the surface of the SB was temperature dependent, and the adsorption increases with increasing temperature. The values of ΔH , ΔG , and ΔS indicated endothermic but spontaneous process. The overall results indicated that SB was a promising candidate for dye removals.

Sugarcane Bagasse-Derived Cellulose as an Eco-Friendly Adsorbent for Azo Dye Removal

“…When the cellulose particles spectra were compared before and after treatment, it was discovered that the majority of the absorption bands had been moved to lower frequencies. These changes were consistent with previous reports of cellulose treatment [40,41]. This data is also supported by several other studies, which also prove that an important role in an adsorption process is the functional group contained in the adsorbent [42][43][44].…”

Valorization of sugarcane bagasse for sugar extraction and residue as an adsorbent for pollutant removal

“…Langmuir and Freundlich isotherms were applied to fit the adsorption data ( Figures 6C,D ), and the corresponding parameters are listed in Table 2 . From the correlation coefficient, Langmuir better described the adsorption process in the four cases, indicating the surface of SCB or SCBE were homogeneous and monolayer adsorption occurred on onto the adsorbents ( Al-Mokhalelati et al, 2021 ). In this study, the interaction between adsorbates and adsorbents cannot be well explained by Freundlich because of the low R 2 values ( Liu et al, 2018 ).…”

Methylene Blue Removal on Biodegradable Adsorptive Membranes Fabricated From Sugarcane Bagasse Pulp: Characterization and Performance Study

“…SEM analysis of the surface also shows the pores’ absence. [ 40 ] Therefore, there will not be a place for physical adsorption to take place, and hence this membrane will show low removal efficiency.…”