Biosorption of Congo Red dye from aqueous solutions using pristine biochar and ZnO biochar from green pea peels

Influence of Impregnation of Sodium Carbonate Catalyst on Physicochemical Properties of Biochar

“…at 1249 cm −1 is due to aromatic methoxy from the hemicellulose. The peaks at 879 cm 616 −1 are ascribed to O-H vibration stretching and aliphatic and aromatic C-H ings, respectively [16]. The BC produced in the presence of sodium carbonate higher ratios encountered a reduction in the intensity and shape of prominent fun groups.…”

Comparison of Oil-Seed Shell Biomass-Based Biochar for the Removal of Anionic Dyes—Characterization and Adsorption Efficiency Studies

“…Raj et al investigated RBB dye adsorption using sewage sludge-derived biochar, achieving rapid efficiency within 20 min [ 49 ]. Green pea peel-derived biochar exhibited 40% dye removal within 90 min at neutral pH for CR dye [ 22 ]. Comparing these studies with our findings, PNS900 biochar demonstrated rapid adsorption (100% in less than 30 min) for RBB dye removal at neutral pH, eliminating the need for additional neutralization steps.…”

“…However, these lignocellulosic biomasses can be pyrolyzed to produce higher-value products like biochar for efficient removal of organic pollutants such as textile dyes from wastewater. The removal of textile dyes, including Methylene Blue [ 17 , 18 ], Remazol Brilliant Blue (RBB) [ 19 , 20 ], and Congo Red [ 21 , 22 ] (CR) from wastewater are efficiently achieved through biochar. Biochar, derived from organic waste, acts as an effective adsorbent, capturing and immobilizing dye molecules in its porous structure.…”

Adsorption of Congo red dye in water by orange peel biochar modified with CTAB

“…Adsorption isotherms can elucidate the interaction between the adsorbed material and the adsorbent and contribute to the understanding of the adsorption process. 29 The Langmuir adsorption isotherm model and the Freundlich adsorption isotherm model were used to analyse the adsorption equilibrium of OBC and NOBC, as shown in Fig. 8 and Table 2.…”