Macroscopic Poly Schiff Base-Coated Bacteria Cellulose with High Adsorption Performance

Abstract

Here, a nanofiber-exfoliated bacteria cellulose aerogel with improved water affinity and high mass transfer was synthesized. Consequently, poly Schiff base can be uniformly coated within the body of bacteria cellulose aerogel without the traditional dispersion treatment. The composite aerogel has adequate mechanical and thermal stability and high mass transfer efficiency. Such an aerogel can serve as a superior adsorbent for flow through adsorption of pollution. Typically, the adsorption capacity towards Cr(VI), Cu(II), Re(VII), Conga red, and Orange G reaches as high as 321.5, 256.4, 153.8, 333.3, and 370.3 mg g−1, respectively. Moreover, the adsorption by this composite aerogel is very fast, such that, for example, at just 2 s, the adsorption is almost finished with Cr(VI) adsorption. Moreover, the composite aerogel exhibits a good adsorption-desorption capability. This research will hopefully shed light on the preparation of bacteria cellulose-derived macroscopic materials powerful in not only environmental areas, but also other related applications.

Construction of porous sodium alginate/TEMPO-oxidized cellulose composite aerogel for efficient adsorption of crystal violet dye in wastewater

“…Additionally, the experimental value of 505.96 mg/g was more closely matched by the maximum adsorption amount (568.18 mg/g) obtained by the pseudo-second-order kinetic t. Hence, it could be determined that the adsorption of CV by STA was a chemisorption process and related to the quasi-second-order kinetic model [52]. The relationship between adsorbent concentration and adsorption capability can be investigated using the adsorption isotherm method [53]. Figure 11(a) displays a plot showing the connection between various beginning concentrations and the quantity of adsorption at the same temperature.…”

Flexible and Transparent Bagasse Aerogels for Thermal Regulation Glazing

“…Sugarcane cellulose was extracted from bagasse via the TEMPO-mediated oxidation method proposed by Isogai et al 34−36 First, an appropriate amount of bleached sugarcane pulp (containing 1 g of sugarcane cellulose) was suspended in 0.05 M sodium phosphate buffer (90 mL, pH 6.8) by dissolving 16 mg of TEMPO and 1.13 g of NaClO 2 in a flask. Then, an appropriate amount of NaClO (1,10,20,30,40, and 50 mmol) was diluted 10 times with the same buffer used as the oxidation medium and was added to the flask, and the flask was stoppered immediately. The above suspension was stirred at 600 rpm at 60 °C for 72 h. After cooling the suspension to room temperature, the TEMPO-oxidized cellulose was thoroughly washed by centrifuging five times with DIW at 11,000 rpm for 10 min each.…”

Adsorption Evaluation for the Removal of Nickel, Mercury, and Barium Ions from Single-Component and Mixtures of Aqueous Solutions by Using an Optimized Biobased Chitosan Derivative

“…The main methods for the metal ions uptake from industrial wastewaters are reverse osmosis, solvent extraction, ion exchange, chemical precipitation, membrane filtration, electrolytic methods, and adsorption [ 16 , 17 , 18 ]. However, these techniques have high operational cost and in the case of trace level concentrations may be ineffective for the adsorption of some types of toxic metal ions [ 16 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 ]. Therefore, a candidate facing the heavy metal ions pollutions is the use of adsorption technology [ 35 , 36 , 37 , 38 , 39 ], and specifically by using chitosan as an adsorbent.…”