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Molecules 2014, 19(6), 8276-8288;

Magnetic Pycnoporus sanguineus-Loaded Alginate Composite Beads for Removing Dye from Aqueous Solutions

Department of Biological Science and Technology, I-Shou University, Kaohsiung City 82445, Taiwan
The School of Chinese Medicine for Post-Baccalaureate, I-Shou University, No.8, Yida Road, Jiaosu Village Yanchao District, Kaohsiung City 82445, Taiwan
Author to whom correspondence should be addressed.
Received: 14 May 2014 / Revised: 6 June 2014 / Accepted: 10 June 2014 / Published: 18 June 2014
(This article belongs to the Special Issue Bio and Nanomaterials Based on Fe3O4)
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Dye pollution in wastewater is a severe environmental problem because treating water containing dyes using conventional physical, chemical, and biological treatments is difficult. A conventional process is used to adsorb dyes and filter wastewater. Magnetic filtration is an emerging technology. In this study, magnetic Pycnoporus sanguineus-loaded alginate composite beads were employed to remove a dye solution. A white rot fungus, P. sanguineus, immobilized in alginate beads were used as a biosorbent to remove the dye solution. An alginate polymer could protect P. sanguineus in acidic environments. Superparamagnetic nanomaterials, iron oxide nanoparticles, were combined with alginate gels to form magnetic alginate composites. The magnetic guidability of alginate composites and biocompatibility of iron oxide nanoparticles facilitated the magnetic filtration and separation processes. The fungus cells were immobilized in loaded alginate composites to study the influence of the initial dye concentration and pH on the biosorption capacity. The composite beads could be removed easily post-adsorption by using a magnetic filtration process. When the amount of composite beads was varied, the results of kinetic studies of malachite green adsorption by immobilized cells of P. sanguineus fitted well with the pseudo-second-order model. The results indicated that the magnetic composite beads effectively adsorbed the dye solution from wastewater and were environmentally friendly. View Full-Text
Keywords: Pycnoporus sanguineus; malachite green; dye; alginate; iron oxide nanoparticles Pycnoporus sanguineus; malachite green; dye; alginate; iron oxide nanoparticles

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Yang, C.-H.; Shih, M.-C.; Chiu, H.-C.; Huang, K.-S. Magnetic Pycnoporus sanguineus-Loaded Alginate Composite Beads for Removing Dye from Aqueous Solutions. Molecules 2014, 19, 8276-8288.

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