Preparation and Methylene Blue Removal Capacity of Chitosans Modified by Microwave
Herein, the chitosans were modified by microwave to remove the methylene blue (MB) dyeing wastewater. The properties of obtained samples were characterized by Fourier transform infrared spectrometry (FT-IR) and X-ray powder diffraction (XRD). The chitosans modified by microwave showed
higher removal efficiency of MB dyeing wastewater comparing with the chitosan modified by traditional method. Different operating conditions, such as initial pH value, adsorbent amount and initial concentration of MB were analyzed with the synthetic wastewater in order to optimize the treatment.
When the initial pH value was 8.0, adsorbent amount was 0.2 g and initial concentration of MB was 200 mg/L, the removal efficiency of MB was 94.86%. Adsorption process of the modified chitosans on MB dyeing wastewater was fitted by the Freundlich adsorption model and the adsorption kinetics
was followed pseudo-second-order kinetic model. The results provided a method to enhance the adsorption ability of chitosans.
Keywords: ADSORPTION; CHITOSANS; METHYLENE BLUE; MICROWAVE MODIFICATION
Document Type: Research Article
Publication date: 01 November 2017
- Journal of Nanoelectronics and Optoelectronics (JNO) is an international and cross-disciplinary peer reviewed journal to consolidate emerging experimental and theoretical research activities in the areas of nanoscale electronic and optoelectronic materials and devices into a single and unique reference source. JNO aims to facilitate the dissemination of interdisciplinary research results in the inter-related and converging fields of nanoelectronics and optoelectronics.
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