一种由树叶衍生的柠檬酸改性纤维素吸附剂的研制，用于吸附去除水溶液中的氢溴酸西酞普兰。
Development of a Citric-Acid-Modified Cellulose Adsorbent Derived from Leaf for Adsorptive Removal of Citalopram HBr in Aqueous Solutions.
作者信息
Azmi Syed Najmul Hejaz, Al Lawati Wafa Mustafa, Al Hoqani Umaima Hamed Abdullah, Al Aufi Ekhlas, Al Hatmi Khalsa, Al Zadjali Jumana Salim, Rahman Nafisur, Nasir Mohd, Rahman Habibur, Khan Shah A
机构信息
Applied Sciences Department (Chemistry Section), Higher College of Technology, University of Technology and Applied Sciences, Al-Khuwair 133, Muscat P.O. Box 74, Oman.
Applied Sciences Department (Biology Section), Higher College of Technology, University of Technology and Applied Sciences, Al-Khuwair 133, Muscat P.O. Box 74, Oman.
出版信息
Pharmaceuticals (Basel). 2022 Jun 17;15(6):760. doi: 10.3390/ph15060760.
A citric-acid-modified leaf substrate was prepared and studied as an effective adsorbent for the adsorptive removal of citalopram HBr (CTM). FTIR spectra were utilized to characterize the prepared solid. The effects of experimental variables on the percentage removal of citalopram HBr were investigated using response surface methodology. The optimum conditions selected for removal of CTM were 7 and 4 min, 0.17 g per 50 mL and 35 mg·L for pH, contact time, adsorbent dose and initial concentration of CTM, respectively. Under the optimized experimental conditions, 82.59% CTM (35 mg·L) was removed. The Langmuir isotherm, Freundlich isotherm, pseudo second-order kinetic model and diffusion-chemisorption model explained the adsorption data successfully. The maximum adsorption capacity at 298 K was 8.58 mg·g. A thermodynamic study illustrated that CTM adsorption was spontaneous and endothermic in nature.
制备了一种柠檬酸改性的叶片基质，并将其作为一种有效的吸附剂用于吸附去除氢溴酸西酞普兰（CTM）。利用傅里叶变换红外光谱（FTIR）对制备的固体进行了表征。采用响应面法研究了实验变量对氢溴酸西酞普兰去除率的影响。去除CTM的最佳条件分别为pH值7、接触时间4分钟、吸附剂用量每50 mL 0.17 g和CTM初始浓度35 mg·L。在优化的实验条件下，去除了82.59%的CTM（35 mg·L）。朗缪尔等温线、弗伦德利希等温线、准二级动力学模型和扩散-化学吸附模型成功地解释了吸附数据。298 K时的最大吸附容量为8.58 mg·g。热力学研究表明，CTM的吸附本质上是自发的且吸热的。
Zotero 插件