Mesoporous activated carbon from mangosteen (Garcinia mangostana) peels by H3PO4 assisted microwave: Optimization, characterization, and adsorption mechanism for methylene blue dye removal

Achievement of sustainable development goals emphasizes alternative fuel strategies posing biodiesel production from plant and animal matter stressing long-chain fatty acid esters. Biodiesel production from renewable energy sources are largely preferred owing to its environment friendly and cost effective economic benefits. Nevertheless several limitations hurdle the efficiency of harnessing the maximal usage render the complexities to be rectified for advancing efficacy of biodiesel. Major issue posing severe hazard can be attributed to the ageing process namely oxidation that positively influence the engine performance and negatively alters storage capabilities. Chemical reactions after iterative chain modifications result in free radicals accumulation ameliorating ease of use in biodiesel. Hence, oxidative stability remains the prominent mechanism for enhancing the compatibility of biodiesel employing suitable antioxidants either natural or synthetic for optimally arresting the chain reactions thereby abating culmination of free radicals. The aim of this review was to analyze and compare the crucial role of natural and synthetic antioxidants in preventing the ageing process of biodiesel. Comparative analysis of the antioxidants that significantly escalates oxidative stability of biodiesel over the last two decades are assessed along with the strategic methodology are scrutinized for apprehending biodiesel stability subsequently based on oxidative stability.

A comprehensive review of the selection of natural and synthetic antioxidants to enhance the oxidative stability of biodiesel

Oxidative stability of biodiesel: recent insights

Evaluation of molecular spectroscopy for predicting oxidative degradation of biodiesel and vegetable oil: Correlation analysis between acid value and UV–Vis absorbance and fluorescence

Renewable biomass and its waste are considered among the most promising applications materials owing to the depletion of fossil fuel and concerns about environmental pollution. Notably, advanced porous carbon materials derived from carbon-rich biomass precursors exhibit controllable pore structures, large surface areas, natural microstructures, and abundant functional groups. In addition, these three-dimensional structures provide sufficient reaction sites and fascinating physicochemical properties that are conducive to heteroatom doping and functional modification. This review systematically summarizes the design methods and related mechanisms of biomass-derived porous carbon materials (BDPCMs), discusses how the synthesis conditions influence the structure and performance of the carbon material, and emphasizes the importance of its use in energy utilization and environmental remediation applications. Current BDPCMs challenges and future development strategies are finally discussed to provide systematic information for further synthesis and performance optimization, which are expected to lead to novel ideas for the future development of bio-based carbon materials. 

Synthesis and applications of biomass-derived porous carbon materials in energy utilization and environmental remediation.

Determination of oxidation stability and degradation degree of rapeseed oil methyl ester by fluorescence spectroscopy

Phosphoric acid/FeCl3 converting waste mangosteen peels into bio-carbon adsorbents for methylene blue removal

Die vorliegende Erfindung betrifft eine Anordnung fur ein Kraftfahrzeug zum Erfassen einer Kraftstoffsorte und/oder einer Kraftstoff Charakteristik, umfassend eine Rohrleitung (2) zur Anordnung zwischen einem Tankdeckel und einem Tank eines Kraftfahrzeugs, und zumindest eine In die Rohrleitung Integrierte Erfassungseinheit (4) zum Erfassen der Kraftstoffsorte und/oder einer Kraftstoffcharakteristik eines durch die Rohrleitung laufenden Kraftstoffes, wobei die Erfassungseinheit zum Emittieren von Licht, vorzugsweise Laserlicht, In den Kraftstoff und zum Detektieren eines vom Kraftstoff ausgesendeten Fluoreszenzlichts ausgebildet Ist.

Anordnung und verfahren für ein kraftfahrzeug zum erfassen einer kraftstoffsorte und/oder kraftstoffcharakteristik

The invention relates to an array for a motor vehicle for detecting a fuel type and/or a fuel characteristic, comprising a pipe line (2) to be arranged between a fuel tank cap and a tank of a motor vehicle, and at least one detection unit (4) integrated in the pipe line for detecting the fuel type and/or a fuel characteristic of a fuel flowing through the pipe line, wherein the detection unit is configured to emit light, preferably laser light, into the fuel for detecting a fluorescent light transmitted by the fuel.

Array and method for a motor vehicle for detecting a fuel type and/or a fuel characteristic

A method based on time-resolved laser-induced fluorescence spectroscopy (TRLFS) for characterization and identification of different fossil diesel fuels, biodiesel and theirs blends is introduced. The method uses a pulsed Nd:YAG laser with an excitation at 266nm and a single nanosecond pulse, measuring the dynamic response with a specific time gate width and gate step (time-resolved), and comparing them in terms of 3D-shapes, frequency behavior and decay behavior. The method also takes into account the maximal intensities and the wavelength of the maximal fluorescence intensity. With this information it is possible to differentiate quickly diesel fuels and is as well useful for in-situ-detection of the biogenic content in biodiesel blends.

/pdf/c5-4-characterization-and-identification-of-diesel-fuels-201em0u8vj.pdf

C5.4 - Characterization and Identification of Diesel Fuels, Biodiesel and their Blends by Time-Resolved Laser- Induced Fluorescence Spectroscopy

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