Adsorption and desorption of cationic malachite green dye on cellulose nanofibril aerogels.

TLDR: Ultra-light aerogels have been assembled from cellulose nanofibrils into hierarchically macroporous (several hundred μm) honeycomb cellular structure surrounded with mesoporous (8-60nm) thin walls, demonstrating facile recovery of both dye and aerogel as well as the robust capability of thisaerogel for repetitive applications.

About: This article is published in Carbohydrate Polymers.The article was published on 2017-10-01 and is currently open access. It has received 208 citations till now. The article focuses on the topics: Adsorption & Langmuir adsorption model.

Figures

Table 1 Pseudo-first and pseudo-second order kinetic model parameters for MG adsorption onto CNF aerogels.

Fig. 4. Langmuir adsorption isotherm fitting (a), and experimental data with both Langmuir and Freundlich isotherm fitting (b), adsorption isotherm parameter for the adsorption of malachite green by CNF aerogel at 1:5 mg/mL aerogel/dye w/v ratios with 10–400 mg/L dye concentration (c).

Fig. 5. Effectiveness of MG removal by CNF aerogels: (a) aerogel dosage (1:5–10:5 mg/mL aerogel/dye w/v rations) on MG (100 mg/L) adsorption and removal at 2 h, inset are pictures of the original dye solutions; (b) complete removal of malachite green (10 mg/L) with 1:5 mg/mL aerogel/MG w/v ratio by cyclic adsorption, insets are pictures o

Frequently asked questions

Q1. What contributions have the authors mentioned in the paper "Adsorption and desorption of cationic malachite green dye on cellulose nanofibril aerogels" ?

The rapid MG adsorption was driven by electrostatic interactions and followed a pseudosecond-order adsorption kinetic and monolayer Langmuir adsorption isotherm.