Effect of pyrolysis temperature on ochratoxin A adsorption mechanisms and kinetics by cashew nut shell biochars

IF 2.6 3区 农林科学 Q2 FOOD SCIENCE & TECHNOLOGY Journal of Food Science and Technology-mysore Pub Date : 2019-09-06 DOI:10.25177/JFST.4.7.RA.565
A. Abderahim, N. Brun, A. Napoli, N. Durand, D. Montēt, Sift Desk Journals Open Access Journals
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引用次数: 6

Abstract

Biochars were produced from cashew nut shell at 400, 600 and 800°C. Production temperature significantly affected biochar properties and consequently the adsorption mechanisms of ochratoxin A. Biochars produced at higher temperatures had significantly higher specific surface areas, resulting in higher OTA adsorption ca-pacities. The isotherms and kinetics of the adsorption were used to identify the adsorption mechanisms. For the kinetics study, experiments were carried out after adjustment of the parameters influencing the system, such as pH, biochar quantity and OTA initial concentration. Experimental results were modelled according to isotherm equations representing Langmuir model and Freundlich model. Langmuir model matched best with the experi-mental data. The chemical surface reaction was fitted to a pseudo-second order equation, with very high re-gression coefficients.
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热解温度对腰果壳生物炭吸附赭曲霉毒素A机理及动力学的影响
以腰果壳为原料,在400、600和800℃的温度下制备生物炭。生产温度显著影响生物炭的性能,从而影响赭曲霉毒素a的吸附机理。较高温度下生产的生物炭具有较高的比表面积,从而导致较高的OTA吸附量。利用等温线和吸附动力学对吸附机理进行了分析。对于动力学研究,在调整pH、生物炭量、OTA初始浓度等影响体系的参数后进行实验。实验结果按照Langmuir模型和Freundlich模型的等温线方程进行建模。Langmuir模型与实验数据最吻合。表面化学反应符合拟二阶方程,具有很高的回归系数。
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来源期刊
CiteScore
7.70
自引率
0.00%
发文量
274
审稿时长
11 months
期刊介绍: The Journal of Food Science and Technology (JFST) is the official publication of the Association of Food Scientists and Technologists of India (AFSTI). This monthly publishes peer-reviewed research papers and reviews in all branches of science, technology, packaging and engineering of foods and food products. Special emphasis is given to fundamental and applied research findings that have potential for enhancing product quality, extend shelf life of fresh and processed food products and improve process efficiency. Critical reviews on new perspectives in food handling and processing, innovative and emerging technologies and trends and future research in food products and food industry byproducts are also welcome. The journal also publishes book reviews relevant to all aspects of food science, technology and engineering.
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