2-Mercaptobenzimidazole-functionalized chitosan for enhanced removal of methylene blue: Batch and column studies

Non-Woven Fabrics Based on Nanocomposite Nylon 6/ZnO Obtained by Ultrasound-Assisted Extrusion for Improved Antimicrobial and Adsorption Methylene Blue Dye Properties

“…In Figure 10b, the adsorption efficiency increases from 80% to 93% when the pH increases from 2 to 7, and in the case of a basic pH such as 11, there is a decrease of 60%. Elwakeel et al reported sorption efficiency, >92% of MB for chitosan functionalized with 2-mercaptobenzimidazole, they present a linear behavior [41]. Instead of another study for the removal of methylene blue using bivalve shells of anadara uropigimelana as a biosorbent at pH 11 and 12, there is a decrease in the percentage of the removal or adsorption similar to that reported in this work [8].…”

Methylene blue removal from aqueous solutions using a biochar/gellan gum hydrogel composite: Effect of agitation mode on sorption kinetics

“…Dragan and Apopei Loghin [83] also report close fits of MB uptake kinetics by PFORE and PSORE when using modified starch/ polyacrylamide composites. Elwakeel et al [84] obtained k 1 values close to 4.1 × 10 − 2 min − 1 , for MB binding onto 2-mercaptobenzimidazole derivative of chitosan. Herein, the apparent rate coefficient is in the range 2-5 × 10 − 2 min − 1 , which is of the same order of magnitude as the values determined by Dragan and Apopei Loghin [83].…”

A starch based sustainable bio-hybrid composite for surface assimilation of methylene blue: preparation, characterization, and adsorption study

“…Table 4 provides the details about adsorption capacities and other associated variables pertaining to the starch-based hybrid adsorbents that are reported for MB, and some food dyes. 2,16,17,19,23,29,30,32,38,40,41,44,61,62 Thus, it is evident that the prepared composite which is natural, biodegradable, and non-toxic yielded good adsorption capacity for MB (604 mg g −1 ). Moreover, it offers an economical option due to its regeneration capability.…”