Abstract A large amount of domestic and industrial wastewater can pose a great threat to our environment. Thus, searching effective and eco-friendly ways for adsorbing and removing toxic substances (Cr⁶⁺, Mn⁷⁺, and methyl orange (MO)) in wastewater is urgent and highly desirable. An efficient, mesoporous, and amino-functionalized polydivinylbenzene (PDVB)-cellulose nanocrystal (CNC/PDVB-NH₂) with high stability and super-hydrophobicity was developed by crosslinking in this study. The pseudo-second-order model and Langmuir model expressed the adsorption kinetics and isotherm well, indicating the adsorption of Cr⁶⁺ and Mn⁷⁺ ions on CNC/PDVB-NH₂ was monolayer chemisorption. The maximum adsorption amount (qm) of Cr⁶⁺ and Mn⁷⁺ ions on CNC/PDVB-NH₂ was 130.39 mg/g and 308.94 mg/g, respectively. For negatively charged dye methyl orange (MO) also maintain adsorption effect. These results indicated the CNC/PDVB-NH₂ can be used as an efficient and reliable absorbent for wastewater treatment, which was worthy of promotion for large-scale application.
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Sun et al. (2024) studied this question.
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