Development of organic–inorganic hybrid beads from sepiolite and cellulose for effective adsorption of malachite green

Abstract

A facile approach has been developed to fabricate well defined organic–inorganic hybrid beads from widely available bamboo pulp and sepiolite, in expectation of an alternative green adsorbent for the removal of organic dyes.

Solvent-free synthesis of the cellulose-based hybrid beads for adsorption of lead ions in aqueous solutions

“…The isotherms were carried out by shaking the MCDBs (0.01 g) with 10 mL of metal ion solution at different initial concentrations. The corresponding adsorption isotherms for lead ions were described by tting the experimental data to the Langmuir, Freundlich, 27 and Temkin isotherms, 28 respectively. The Langmuir equation used was the linear form eqn (6): 29 C e /q e ¼ aC e /K L + 1/K L (6) where q e and C e are the solution (mg g À1 ) and surface concentrations (mg L À1 ) for the adsorbate at the equilibrium, respectively, and K L (L g À1 ) and a (L mg À1 ) are the isotherm constants.…”

A Facile Way for Preparation of Cellulose Beads With High Homogeneity, Low Crystallinity, and Tunable - Internal Structure

“…(Krysztof, Olejnik et al, 2018) The preparation technology of NMMO/H 2 O regenerated cellulose has been industrialized (Carrick, Pendergraph et al, 2014) and widely used in cellulose-based aerogels,(C. Zhang, Zhai et al, 2017) hydrogels, (Cao, Li et al, 2018) lms, beads, (Hao, Sh et al, 2020) microspheres, (Sw, Yg et al, 2020) laments, and textile fabrics. (Jie Cai, Liu et al, 2012;Jiang, Wang et al, 2017) Korpela et al(Korpela, Kunnari et al, 2017) found that NMMO could dissolve cellulose to enhance the properties of nano cellulose (CNF) lms. NMMO dissolved the cellulose in the composite lms, and the remaining CNF lm was heated and compressed to reduce the porosity of the lm.…”

Novel Composite Adsorbent Consisting of Dissolved Cellulose Fiber/Microfibrillated Cellulose for Dye Removal from Aqueous Solution

“…Apart from low density and cost, they are renewable and biodegradable. A few studies of the cellulose composites as the adsorbents for the removal of pollutant have been reported. , The powdered shape of such adsorbents might cause difficulty for running the filtration and separation effectively, resulting in the lower potential application in a large-scale water treatment . The exploration of cellulose-based adsorbents which could facilitate the applications in large-scale, such as beads and other shaped particles, is therefore necessary and has been the hot topic for researchers.…”

“…16,17 The powdered shape of such adsorbents might cause difficulty for running the filtration and separation effectively, resulting in the lower potential application in a large-scale water treatment. 18 The exploration of cellulose-based adsorbents which could facilitate the applications in large-scale, such as beads and other shaped particles, is therefore necessary and has been the hot topic for researchers. Zhang et al synthesized the magnetic cellulose beads entrapped with activated carbon in an attempt to remove both MB (Methylene Blue) and MO (Methyl Orange).…”