Effective Adsorption of Colorants from Sugarcane Juice by Bagasse-Based Biochar-Hydroxyapatite Composite

Abstract

The clarification of sugarcane juice is a crucial stage in the sugar manufacturing process, as it affects evaporator performance, sugar quality and yield. The emergence of environmentally friendly and efficient adsorption technology has resulted in widespread interest in carbon-based materials. However, their low adsorption capacity and reusability make them unsuitable for processing sugarcane juice. Here, we provide a cost-effective and sustainable method to dope hydroxyapatite (HAP) nanoparticles on porous carbon (BBC) derived from sugarcane bagasse (BBC-HAP). The composite shows excellent adsorption capacity for color extract from sugarcane juice of 313.33 mg/g, far more effective than the commercially available carbon-based adsorbents. Isotherm studies show that the adsorption of BBC-HAP composite to the colorants is a monolayer process. The pseudo-first-order (PFO) and pseudo-second-order (PSO) kinetic models demonstrate that the adsorption process is dominated by chemisorption and supplemented by physical adsorption.

Effect of alkaline hydrogen peroxide assisted with two modification methods on the physicochemical, structural and functional properties of bagasse insoluble dietary fiber

“…The structural integrity of E-BIDF was destroyed and its surface was uneven, forming a large number of honeycomb microstructures, which may be due to the massive degradation of wall polysaccharides caused by hemicellulase. Numerous studies have shown that the irregular surface and porous structure contribute to the adsorption capacity of the material ( 28 ), which is crucial for the subsequent adsorption of ions and molecules. Nevertheless, this special structure could increase the relative surface area, and lead to the increase of WHC, OHC, BSAC, NIAC.…”

Design of a Fixed Bed Adsorption Column and Modelling of Operating Parameters for the Removal of Methylene Blue in Dynamic Mode

“…In recent decades, as a result of industrial increasing and technological advances, coloured effluents have caused damage to the aquatic ecosystem and posed a significant threat to human health due to their toxicity (Karaoǧlu et al, 2010;Wazir et al, 2020). To date, several techniques have been identified for the removal of dyes, including solvent extraction, photocatalytic degradation, coagulation, membrane filtration, chemical and biological oxidation and adsorption (Léonce Kouadio et al, 2022;Wang et al, 2022). Compared to other treatment systems, adsorption is an inexpensive, accessible and feasible method for the decontamination of wastewater with dyes (Al-Mahbashi et al, 2022; Blanco-Flores et al, 2016).…”