Department of Chemical Engineering, Jadavpur University, Kolkata, India.
Bioresour Technol. 2011 Feb;102(3):3610-8. doi: 10.1016/j.biortech.2010.10.123. Epub 2010 Oct 30.
This paper explores the feasibility of converting waste Rohu fish (Labeo rohita) scale into a high-performance, reusable, low-cost heterogeneous catalyst for synthesis of biodiesel from soybean oil. The thermo-gravimetric analysis (TGA) and X-ray diffraction (XRD) analysis revealed that a significant portion of the main component of fish scale i.e. HAP (hydroxyapatite) could be transformed into β-tri-calcium phosphate when calcined above 900°C for 2 h. Scanning Electron Microscopy (SEM) morphology studies of the calcined scale depicted a fibrous layer of porous structure; while a BET surface area of 39 m(2)/g was measured. Response surface methodology (RSM) was employed to determine the optimal parametric conditions viz. methanol/oil molar ratio, 6.27:1, calcination temperature, 997.42°C and catalyst concentration, 1.01 wt.% of oil corresponding to a maximum FAME yield of 97.73%. Reusability results confirmed that the prepared catalyst could be reemployed up to six times, procreating a potentially applicable avenue in biodiesel synthesis.
本论文探讨了将废弃的罗非鱼（Labeo rohita）鳞片转化为高性能、可重复使用、低成本的非均相催化剂，用于从大豆油合成生物柴油的可行性。热重分析（TGA）和 X 射线衍射（XRD）分析表明，当在 900°C 以上煅烧 2 小时时，鱼鳞片的主要成分即 HAP（羟基磷灰石）的很大一部分可以转化为β-磷酸三钙。煅烧鳞片的扫描电子显微镜（SEM）形貌研究显示出纤维状的多孔结构层；同时测量到的 BET 比表面积为 39 m(2)/g。响应面法（RSM）用于确定最佳参数条件，即甲醇/油摩尔比为 6.27:1、煅烧温度为 997.42°C 和催化剂浓度为油的 1.01wt.%，对应的 FAME 产率最高为 97.73%。可重复使用性结果证实，所制备的催化剂可重复使用多达六次，为生物柴油合成提供了潜在的应用途径。
