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In this study, an attempt was made to use micro-algal system for the production of biodiesel precursors and simultaneous CO(2) mitigation. Chlorella sp. was found to have a higher growth rate as compared to the other algal species tested namely Chlamydomonas sp. and Synnecococcus sp. At different CO(2) concentrations (0.03%, 3%, 10% and 15%), the lipid productivity was 23.0, 20.0 and 27.3mg/L/d respectively. Calcite produced was characterized using FT-IR, SEM and XRD. The FAME in crude biofuel was analyzed by GC-FID that found to contain palmitic acid (C16:0), docosapentaenoic acid (C22:5) and docosahexaenoic acid (C22:6). The calorific value of Chlorella sp. was found to be 29kJ/g which is higher than values reported for fresh water microalgae making it a potential candidate to be used as an alternate fuel.
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http://dx.doi.org/10.1016/j.biortech.2010.06.012 | DOI Listing |
RSC Adv
August 2025
Department of Chemistry, Faculty of Science, Cairo University Cairo Egypt
This study aims to valorize hazardous industrial marble machining and shaping waste powder as a precursor to prepare a heterogeneous nano-catalyst (CaO/KCO) employing the wet-impregnation method for producing biodiesel the transesterification of waste cooking oil (WCO). Surface and morphological characterization of the thus-prepared nano-catalyst has been performed employing various analytical tools, , XRD, BET, CO-TPD, FT-IR, HR-TEM, and FE-SEM & mapping EDX. The impact of calcination treatment on the catalytic performance is investigated together with the weight percentage (wt%) of CaO compared to KCO.
View Article and Find Full Text PDFBiotechnol Biofuels Bioprod
August 2025
VIB Laboratory for Systems Biology, VIB-KU Leuven Center for Microbiology, 3001, Leuven, Belgium.
3-Methyl-1-butanol (3MB) is a promising renewable solvent, drop-in fuel, and precursor for various industrial products, including flavors, fragrances, and surfactants. Due to the myriad of intertwined biosynthetic pathways that share metabolic precursors, conventional metabolic engineering strategies to overproduce 3MB in yeast have typically resulted in yields that are far too low for economic viability. However, because 3MB is naturally produced by yeast, 100 million liter of 3MB are already produced annually as a byproduct of bioethanol fermentations.
View Article and Find Full Text PDFSci Rep
August 2025
Department of Organic Chemistry, Faculty of Chemistry and Petroleum Sciences, Bu-Ali Sina University, Hamedan, 6517838683, Iran.
MOF@COF hybrid materials are precursors for producing metal-free N-doped carbon materials-based catalysts. This work is allocated to the production of nitrogen-doped mesoporous carbon from a metal-organic framework (MOF, named Zn-MOF-74), with modification of triazine-based covalent-organic frameworks (TriCF) via high-temperature pyrolysis. The obtained porous N-rich carbon materials provided rich active sites for the esterification of purslane oil.
View Article and Find Full Text PDFBioresour Technol
November 2025
School of Energy & Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea. Electronic address:
Free fatty acids (FFA) serve as versatile precursors for biofuels and oleochemicals, and their microbial production offers a renewable alternative to petrochemical processes. Escherichia coli has been extensively engineered for high-titer FFA production and currently serves as the benchmark chassis, achieving titers exceeding 35 g L through advanced metabolic and systems biology approaches. In contrast, Pseudomonas putida KT2440 has recently gained attention due to its innate stress tolerance, redox flexibility, and broad substrate utilization, though reported FFA titers remain modest (∼0.
View Article and Find Full Text PDFChem Asian J
August 2025
Organic Chemistry Department and Institute of Organic Synthesis (ISO), University of Alicante, ctra. San Vicente del Raspeig s/n, San Vicente del Raspeig, Alicante, 03690, Spain.
In this work, the synthesis and characterization of a novel zirconium-imidazolium-based metal-organic hydrogel and xerogel (Zr-bcmimCl) are described. The hydrogel was synthesized via a straightforward gelation process using zirconium oxychloride and 1,3-bis(carboxymethyl)-imidazolium chloride (bcmimCl) as precursors, followed by drying to obtain the corresponding xerogel (Zr-bcmimCl). The Zr-based hydrogel displayed moderate conductivity, and the interactions between zirconium species and the ligand may influence its redox properties, as observed by cyclic voltammetry measurements.
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