Solvent-Aided Crystallization for Biodiesel Purification: A Review of the Technique's Proficiency

Bello, Usman and Adamu, Haruna and Samsuri, Shafirah and Qamar, Mohammad and Wan Osman, Wan Nur Aisyah (2025) Solvent-Aided Crystallization for Biodiesel Purification: A Review of the Technique's Proficiency. ChemBioEng Reviews. ISSN 21969744

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Official URL: https://www.scopus.com/inward/record.uri?eid=2-s2....

Abstract

Traces of impurities encountered after purification processes compromise biodiesel's stability, longevity, and quality performance. Techniques, such as wet washing, adsorbents, and membranes, have been extensively explored; however, they grapple with several challenges, including wastewater generation, time-demanding tasks, and environmentally unfriendly protocols. This study presents a comprehensive overview of solvent-aided crystallization (SAC) as a plausible biodiesel purification option that offers economic and environmental benefits through efficient solvent recovery and minimal waste generation. A total of 23,009 documents published between 2004 and 2024 in the Scopus database were analyzed using a bibliometric approach. This gives insight into research trends, identifies the most extensively explored techniques, highlights countries with a well-established research base in this domain, and offers a guide for evaluation and preference selection for a particular technique. Although conventional methods have been acknowledged for showing great promise in removing impurities such as glycerol and free fatty acids from biodiesel achieving about 98 , SAC was reported to achieve 99.8 purity. Moreover, the analysis presented herein underscores the fundamental principles of SAC, factors influencing its efficiency, and the role of selective solubility in enabling effective purification. Finally, it highlights the critical role of strengthened policy action and continued research as key elements, offering researchers valuable insights for advancing the broader adoption and commercialization of SAC. © 2025 Wiley-VCH GmbH.

Item Type: Article
Impact Factor: Cited by: 0
Uncontrolled Keywords: Cleaning; Energy efficiency; Impurities; Pollution control; Purification; Removal; Solvents; Cleaner processing; Economic and environmental benefits; Energy-efficient techniques; Generation time; Green separation; Impurity removal; Purification process; Quality performance; Stability performance; Wastewater generation; Biodiesel
Depositing User: Mr Ahmad Suhairi Mohamed Lazim
Date Deposited: 08 Jul 2025 16:28
Last Modified: 08 Jul 2025 16:28
URI: http://scholars.utp.edu.my/id/eprint/38946

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