Abstract

In this study, a novel biosorbent material was created from the waste product of Zostera marina with the surfactant modification (Hexadecyltrimethylammonium bromide) and tried as a potential alternative to commercial (powdered) activated carbon for the treatment of synthetic dye (Fast green FCF, triarylmethane (anionic) type) pollution in aquatic environment. The treatment capability of biosorbent material was evaluated by the parameter optimization, kinetic, thermodynamic, equilibrium and characterization experiments. The optimum treatment conditions were found to be pH of 3, biosorbent amount of 10 mg, synthetic dye concentration of 15 mg L⁻¹, temperature of 45 °C and operation time of 360 min. It was determined that Elovich model was the most suitable model among the models used to define the biosorption kinetic data. The synthetic dye treatment process was endothermic and spontaneous. Freundlich model best explained the biosorption isotherm data. The biosorbent has very heterogeneous surface with the different functional groups. The treatment capabilities of prepared biosorbent and activated carbon under the same operating conditions were calculated to be 163.075 and 110.635 mg g⁻¹, respectively. Hereby, these experimental findings show that the synthesized eco-friendly and low-cost biosorbent can be a powerful alternative to commercial activated carbon for the purification of synthetic dye pollution in water environment.

抽象的

在这项研究中，从带状表面活性剂修饰的滨海带菌（Zostera marina）的废品中创建了一种新型生物吸附材料，并试图作为商业（粉状）活性炭的潜在替代品，用于处理合成染料（快速绿色FCF，三芳基甲烷） （阴离子）型）对水生环境的污染。通过参数优化，动力学，热力学，平衡和表征实验评价了生物吸附剂材料的处理能力。发现最佳处理条件是pH为3，生物吸附剂量为10 mg，合成染料浓度为15 mg L ^-1，温度为45°C，操作时间为360分钟。确定了Elovich模型是用于定义生物吸附动力学数据的模型中最合适的模型。合成染料的处理过程是吸热的和自发的。Freundlich模型可以最好地解释生物吸附等温线数据。生物吸附剂的表面具有非常不同的官能团。所制备的生物吸附剂和活性炭在相同操作条件下的处理能力经计算分别为163.075和110.635 mg g ^-1。因此，这些实验结果表明，合成的环保型低成本生物吸附剂可以作为商业活性炭的有力替代品，以净化水环境中的合成染料污染。