Background: Dye contamination of natural water system is a severe problem due to the considerable enhancement in the industrial activities. As the dyes are highly visible, nonbiodegradable, and toxic in nature, they are considered as a severe source of water pollution. Therefore, it is imperative to develop an inexpensive, simple, effective, and easy technique for their elimination from wastewater.

Methods: Luffa aegyptiaca peel (LuAP), kitchen waste was exploited as a low-priced biosorbent for the adsorptive elimination of cationic methylene blue (MB) dye. The influence of several batch parameters, i.e., adsorbent dose, pH of the solution, initial dye concentration, adsorbate/adsorbent contact time, and temperature were optimized for maximum adsorption of MB from aqueous media. Furthermore, thermodynamics, kinetics, and isotherm studies were also carried out in order to comprehend the dominant mechanism for the adsorptive elimination of MB.

Results: The kinetic data for the adsorption of MB onto the LuAP followed closely by the pseudosecond- order (PSO) kinetics, and the adsorption equilibrium data were observed to be well demonstrated by Langmuir isotherm. The equilibrium was attained in 180 min with maximum sorption capacity of 52.63 mg/g at an adsorbent dose of 3 g/L, pH of 7, and temperature of 303 K. Thermodynamic study reveals that the removal of MB by LuAP is spontaneous and endothermic.

Conclusion: It has been concluded that LuAP can be efficiently utilized for the confiscation of cationic MB dye from polluted water.

背景：由于工业活动的显着增强，天然水系统的染料污染是一个严重的问题。由于染料具有高度可见性、不可生物降解性和毒性，它们被认为是严重的水污染源。因此，开发一种廉价、简单、有效和容易的技术从废水中去除它们是势在必行的。

方法：丝瓜皮 (LuAP)，厨余垃圾被用作一种廉价的生物吸附剂，用于吸附消除阳离子亚甲蓝 (MB) 染料。优化了几个批次参数的影响，即吸附剂剂量、溶液的 pH 值、初始染料浓度、吸附物/吸附剂接触时间和温度，以最大程度地从水性介质中吸附 MB。此外，还进行了热力学、动力学和等温线研究，以了解吸附消除 MB 的主要机制。

结果：MB 在 LuAP 上的吸附动力学数据紧随其后是伪二级 (PSO) 动力学，并且观察到吸附平衡数据由 Langmuir 等温线很好地证明。在 180 分钟内达到平衡，吸附剂剂量为 3 g/L、pH 值为 7、温度为 303 K 时，最大吸附容量为 52.63 mg/g。热力学研究表明，LuAP 对 MB 的去除是自发和吸热的.

结论：已经得出结论，LuAP 可以有效地用于没收污水中的阳离子 MB 染料。