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.
Molecules. 2014 Jun 18;19(6):8276-88. doi: 10.3390/molecules19068276.
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.
废水的染料污染是一个严重的环境问题，因为使用传统的物理、化学和生物处理方法处理含染料的水是困难的。传统的工艺是用来吸附染料和过滤废水的。磁过滤是一种新兴的技术。在这项研究中，负载血红色多孔菌的海藻酸钠复合珠被用于去除染料溶液。一种固定在海藻酸钠珠中的白腐真菌，血红色多孔菌，被用作生物吸附剂来去除染料溶液。海藻酸盐聚合物可以保护酸性环境中的血红色多孔菌。超顺磁纳米材料，氧化铁纳米粒子，与海藻酸钠凝胶结合形成磁性海藻酸钠复合材料。海藻酸盐复合材料的磁性导向性和氧化铁纳米粒子的生物相容性促进了磁过滤和分离过程。将真菌细胞固定在负载的海藻酸盐复合材料中，研究初始染料浓度和 pH 值对生物吸附能力的影响。吸附后，复合珠很容易通过磁过滤过程去除。当改变复合珠的用量时，固定化血红色多孔菌细胞吸附孔雀石绿的动力学研究结果与准二级模型拟合良好。结果表明，磁性复合珠能有效地从废水中吸附染料溶液，且对环境友好。
