Dr. K. C. Patel R & D Centre, Charotar University of Science and Technology (CHARUSAT), 388 421 Anand, Gujrat, India; P D Patel Institute of Applied Sciences, Charotar University of Science and Technology (CHARUSAT), 388 421, Anand, Gujrat, India; Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, 16846 Tehran, Iran.
Dr. K. C. Patel R & D Centre, Charotar University of Science and Technology (CHARUSAT), 388 421 Anand, Gujrat, India; P D Patel Institute of Applied Sciences, Charotar University of Science and Technology (CHARUSAT), 388 421, Anand, Gujrat, India.
Int J Biol Macromol. 2024 Jan;254(Pt 2):127794. doi: 10.1016/j.ijbiomac.2023.127794. Epub 2023 Nov 3.
In this epoch, the disposal of multipollutant wastewater inevitably compromises life on Earth. In this study, the inclusion of Bacterial cellulose microfilaments reinforced chitosan adorned with melamine 2D plates creates a unique 3D bead structure for anionic dye removal. The establishment of an imine network between melamine and chitosan, along with the quantity of inter- and intra‑hydrogen bonds, boosts the specific surface area to 106.68 m.g. Removal efficiency and in-depth comprehension of synthesized adsorbent characteristics were assessed using batch adsorption experiments and characterization methods. Additionally, pH, adsorbent quantity, time, beginning concentration of solution, and temperature were analyzed and optimized as adsorption essential factors. Owing to the profusion of hydroxyl, amine, imine functional groups and aromatic rings, the synthesized adsorbent intimated an astonishing maximum adsorption capacity of 3168 mg.g in Congo red dye removal at pH 5.5. Based on the kinetic evaluation, pseudo-second-order (R = 0.999), pseudo-first-order (R = 0.964), and Avrami (R = 0.986) models were well-fitted with the kinetic results among the seven investigated models. The isothermal study reveals that the adsorption mechanism predominantly follows the Redlich-Peterson (R = 0.996), Koble-Carrigan, and Hill isotherm models (R = 0.994). The developed semi-natural sorbent suggests high adsorption capacity, which results from its exceptional structure, presenting promising implications for wastewater treatment.
在这个时代，多污染物废水的处理不可避免地会危及地球上的生命。在这项研究中，细菌纤维素微丝的包含增强了壳聚糖，并装饰有三聚氰胺二维板，为阴离子染料的去除创造了独特的 3D 珠状结构。三聚氰胺和壳聚糖之间形成亚胺网络，以及氢键的数量和类型，将比表面积提高到 106.68 m.g。通过批处理吸附实验和特性分析方法，评估了合成吸附剂的去除效率和深入了解特性。此外，分析和优化了 pH、吸附剂用量、时间、溶液起始浓度和温度等作为吸附的重要因素。由于羟基、胺、亚胺官能团和芳环的丰富，合成的吸附剂在刚果红染料去除中表现出令人惊讶的最大吸附容量为 3168 mg.g，pH 值为 5.5。根据动力学评估，伪二阶（R = 0.999）、伪一阶（R = 0.964）和 Avrami（R = 0.986）模型在七个研究模型中很好地拟合了动力学结果。等温研究表明，吸附机制主要遵循 Redlich-Peterson（R = 0.996）、Koble-Carrigan 和 Hill 等温模型（R = 0.994）。所开发的半天然吸附剂具有高吸附能力，这是由于其特殊的结构所致，这对废水处理具有重要意义。
