期刊
BIORESOURCE TECHNOLOGY
卷 193, 期 -, 页码 563-567出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.06.148
关键词
Adsorption; Iron oxide nanoparticles; Magnetic nanocomposites; Chitosan; Textile wastewater
资金
- Human Resource Training Program for Regional Innovation and Creativity through the Ministry of Education and National Research Foundation (NRF) of Korea [NRF-2014H1C1A1066929]
- ME and NRF of Korea [NRF-2013R1A1A4A01008000, NRF-2009-0093819]
- NRF grant by the Korea government (MSIP) [NRF-2015M2A7A1000194]
- National Research Foundation of Korea [2013R1A1A4A01008000, 2014H1C1A1066929, 2009-0093819, 2015M2A7A1000194] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Magnetic chitosan nanocomposites (MCNCs) were synthesized by an inexpensive reduction precipitation technique using a glutaraldehyde cross-linking agent at room temperature. Successful chitosan coating of iron oxide nanoparticles was confirmed by X-ray photoemission spectroscopy. X-ray diffraction data revealed crystalline particle sizes for the iron oxide and MCNCs to be around 6-7 and 8-9 nm, respectively. In addition, the MCNCs exhibited supermagnetic properties having magnetic saturation of 17.5 emu/g. The synthesized MCNCs showed 91.60% absorption of Acid Red 2, while iron oxide 16.40% absorption; enhanced performance in MCNCs was resulted from presence of free amino and hydroxyl groups. Furthermore, the optimum pH and adsorbent concentration were 3 and 1.0 g/L, respectively. The Redlich-Peterson isotherm fit experimental data better than Langmuir and Freundlich models, based on non-linear regression. Finally, MCNCs showed 96% American Dye Manufacturing Institute (ADMI) value removal and gave recovery efficiency of 100%, making them attractive for further practical applications. (C) 2015 Elsevier Ltd. All rights reserved.
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