Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603110, India.
Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603110, India.
Environ Pollut. 2021 Jan 15;269:116173. doi: 10.1016/j.envpol.2020.116173. Epub 2020 Dec 1.
In the current research work, a novel eco-friendly FeO@SiO nanocomposite immobilized with Pseudomonas fluorescens biomass in calcium alginate beads (MSAB) was used as biosorbent for the elimination of hazardous Rhodamine B dye from aqueous system. The FTIR, XRD and SEM results showed that the MSAB possessed excellent surface properties for the effective sequestration of Rhodamine B. The batch adsorption results concluded that the adsorption of Rhodamine B using MSAB is highly influenced by the parameters such as pH, adsorbent dosage, initial dye concentration and contact time. The equilibrium and kinetics data get best fitted in the Freundlich isotherm and Pseudo first order kinetics for the studied adsorption system. The Langmuir monolayer adsorption capacity was found to be 229.6 mg/g. The thermodynamic studies showed that the adsorption was spontaneous, feasible and exothermic in nature. The adsorption mechanisms are understood using the Intraparticle diffusion and Boyd model. Thus, this Magnetic silica alginate beads (MSAB) containing dead biomass of Pseudomonas fluorescens is considered to be an ideal biosorbent which can be used as an effective tool in treating the industrial dye wastewater treatment.
在当前的研究工作中，使用了一种新型的环保 FeO@SiO 纳米复合材料，该复合材料固定有荧光假单胞菌生物质在海藻酸钠珠（MSAB）中，作为生物吸附剂，用于从水溶液中去除危险的 Rhodamine B 染料。FTIR、XRD 和 SEM 结果表明，MSAB 具有优异的表面特性，可有效螯合 Rhodamine B。批吸附结果表明，MSAB 对 Rhodamine B 的吸附受 pH 值、吸附剂用量、初始染料浓度和接触时间等参数的高度影响。平衡和动力学数据最适合 Freundlich 等温线和拟一级动力学模型。研究吸附体系的单层吸附容量为 229.6 mg/g。热力学研究表明，吸附是自发的、可行的和放热的。吸附机制可以通过内扩散和 Boyd 模型来理解。因此，这种含有死荧光假单胞菌生物质的磁性硅酸钠珠（MSAB）被认为是一种理想的生物吸附剂，可作为处理工业染料废水的有效工具。
