Preparation of graphite oxide/polyurethane foam material and its removal application of malachite green from aqueous solution

Abstract

Synthetic dyes are commonly used in textile, paper, leather, food, plastic and cosmetic industries. In this study, a series of novel graphite oxide/polyurethane (GO/PU) polymeric foam materials were prepared by foaming technique. The GO/PU was applied to remove malachite green (MG) from aqueous solution. When static adsorption experiment was carried out with a GO content of 3.0%, a GO/PU dosage of 40 mg/mL, a temperature of 50°C, and a time of 3 h, the highest adsorption efficiency can reach 99.7%. The kinetics, equilibrium and thermodynamics of MG adsorption onto GO/PU polymeric foam material were investigated. The results indicated that adsorption behavior was found to follow closely the pseudo‐second order kinetics, equilibrium data were well fitted by Langmuir adsorption model and the adsorption process was spontaneous and endothermic. Prepared GO/PU foam material has potential application for the wastewater treatment containing MG dye. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40988.

Removal of Malachite Green Dye Using IRMOF-3–MWCNT-OH–Pd-NPs as a Novel Adsorbent: Kinetic, Isotherm, and Thermodynamic Studies

“…On the other hand, the obtained results demonstrated that an increase in temperature leads to an enhancement in Q m values while an increase in the amount of adsorbent led to a reverse trend in most of the studied cases except for the temperature of 313.15 K. In more detail, the results revealed that the adsorption of MG onto adsorbents can only occur at a finite number of definite localized sites, and the adsorbed layer is thickless or a monolayer. 12,14,15,48 On the other hand, an increase in K L value with rising initial MG concentration and adsorbents mass revealed the high tendency of MG adsorption.…”

“…In addition, Khattri et al 13 utilized Neem sawdust (Azadirachta indica) to eliminate and remove malachite green dye from an aqueous solution which revealed a maximum monolayer adsorption capacity of 4.354 mg g −1 in 14 min. Years after, Qin et al 14 used graphite oxide/polyurethane (GO/PU) polymeric foam materials to remove malachite green from aqueous solution with an adsorption capacity of 68.82 mg g −1 in 180 min. Moreover, Gautam et al 15 prepared bimetallic Fe−Zn nanoparticles and then used these particles to remove carcinogenic dye malachite green (MG) and congo red (CR) existing in a water solution.…”

Strategies for Solving the Issue of Malachite Green Residues in Aquatic Products: A Review

“…Apart from MNPs, CNTs, and cellulosebased nanomaterials, several other nanocomposites also showed high adsorption efciency to MG, such as nanoiron oxide-loaded alginate microspheres [35], zeolite nanostructures [42], iron nanoparticles loaded on ash [43], bimetallic Fe-Zn nanoparticles [44], kappa-carrageenan-gpolyacrylic acid/TiO 2 -NH 2 hydrogel nanocomposite [45], gum xanthan/psyllium-based nanocomposite [46], and hematite-reduced graphene oxide composites [47]. In addition, reports using graft copolymer derived from amylopectin and poly(acrylic acid) [48], graphite oxide/polyurethane foam material [49], chitosan beads [50], and reinforced hybrid porous beads that are prepared with alginate, aluminumpillared montmorillonite, polyvinyl alcohol, and CaCO 3 [51] for MG removal also exist in literature. However, absorbents that possess the best adsorption efciency to MG were reported by Zheng et al [52] and Lin and Chang [53].…”

Efficient removal of rhodamine B and methylene blue from water using polyurethane based porous material

“…[8] The reports on metal ornamented materials, poly(ester), and poly(amide) seems to be explored more compared to polyurethane based material. The approach need to be directed to explore engineering polyurethane [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] and its derivatives with low cost adsorbents showing high efficiency with minimal involvement of manpower. Saha et al reported the new class of click derived semi fluorinated sulfonated polytriazole composite which incubated properties like thermo-chemical and mechanical stabilities with proton conductivities.…”