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New Findings from R. Batmaz and Co-Researchers in the Area of Nanocrystals Described (Cellulose nanocrystals as promising adsorbents for the removal...

July 1, 2014



New Findings from R. Batmaz and Co-Researchers in the Area of Nanocrystals Described (Cellulose nanocrystals as promising adsorbents for the removal of cationic dyes)

By a News Reporter-Staff News Editor at Life Science Weekly -- Investigators publish new report on Nanocrystals. According to news reporting originating from Montreal, Canada, by NewsRx correspondents, research stated, "Cellulose nanocrystals (CNCs) prepared from cellulose fibre via sulfuric acid hydrolysis was used as an adsorbent for the removal of methylene blue (MB) from aqueous solution. The effects of pH, adsorbent dosage, temperature, ionic strength, initial dye concentration were studied to optimize the conditions for the maximum adsorption of dye."

Our news editors obtained a quote from the research, "Adsorption equilibrium data was fitted to both Langmuir and Freundlich isotherm models, where the Langmuir model better described the adsorption process. The maximum adsorption capacity was 118 mg dye/g CNC at 25 A degrees C and pH 9. Calculated thermodynamic parameters, such as free energy change (Delta G = -20.8 kJ/mol), enthalpy change (Delta H = -3.45 kJ/mol), and entropy change (Delta S = 0.58 kJ/mol K) indicates that MB adsorption on CNCs is a spontaneous exothermic process."

According to the news editors, the research concluded: "Tunability of the adsorption capacity by surface modification of CNCs was shown by oxidizing the primary hydroxyl groups on the CNC surface with TEMPO reagent and the adsorption capacity was increased from 118 to 769 mg dye/g CNC."

For more information on this research see: Cellulose nanocrystals as promising adsorbents for the removal of cationic dyes. Cellulose, 2014;21(3):1655-1665. Cellulose can be contacted at: Springer, Van Godewijckstraat 30, 3311 Gz Dordrecht, Netherlands. (Springer - www.springer.com; Cellulose - www.springerlink.com/content/0969-0239/)

The news editors report that additional information may be obtained by contacting R. Batmaz, CelluForce Inc, Montreal, PQ H3A 1K2, Canada. Additional authors for this research include N. Mohammed, M. Zaman, G. Minhas, R.M. Berry and K.C. Tam (see also Nanocrystals).

Keywords for this news article include: Quebec, Canada, Montreal, Nanotechnology, Emerging Technologies, North and Central America

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Life Science Weekly


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