4.7 Article

Catalytic fast pyrolysis of Arthrospira platensis (spirulina) algae using zeolites

期刊

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
卷 118, 期 -, 页码 298-307

出版社

ELSEVIER
DOI: 10.1016/j.jaap.2016.02.013

关键词

Fast pyrolysis; Algae; Arthrospira platensis; Spirulina; Zeolite; Py-GC/MS

资金

  1. Department of Science and Technology (DST), India [SR/S3/CE/074/2012]
  2. Chevron Inc., U.S.A.
  3. DST, India

向作者/读者索取更多资源

This study is aimed at characterizing the thermal stability and evaluating the conversion of Arthrospira platensis (Spirulina platensis), a species of microalgae, to various chemicals and intermediates via non catalytic and catalytic fast pyrolysis using different zeolites. Thermogravimetric analysis was performed to evaluate the kinetics of decomposition of the algae using integral isoconversional method of Vyazovkin, and fast pyrolysis experiments were performed in a micropyrolyzer and the relative composition of the pyrolysates was analyzed in a gas chromatograph/mass spectrometer. The effects of (i) temperature during non-catalytic fast pyrolysis, and (ii) zeolite type, zeolite:algae mass ratio and temperature during catalytic fast pyrolysis on pyrolysate composition were analyzed. The formation of long chain organics like alkanes, alkenes, carboxylic acids and nitriles decreased, while that of CO2 increased with increase in pyrolysis temperature from 350 to 800 degrees C. The addition of ZSM5, zeolite-beta and zeolite-Y catalysts at 10:1 wt./wt. loading to algae at 600 degrees C significantly altered the product spectrum involving the formation of nitriles, aromatics, and cycloalkanes. Acetonitrile, benzene, toluene, xylene, cyclobutane and dimethyl cyclopropane were the major organics. Calorific value of the organic components in the pyrolysate (>30 MJ kg(-1)) was significantly higher than that of the raw algae (20.75 MI kg(-1)). Increase in catalyst loading (from 2:1 to 50:1 wt./wt.) and temperature (from 350 to 600 degrees C) resulted in significant increase in production of monoaromatics, polyaromatics and cycloalkanes, whereas the formation of nitriles increased and decreased with catalyst loading and temperature, respectively. Plausible reactions leading to the observed product distribution are discussed. This study shows that useful organic intermediates can be obtained via catalytic fast pyrolysis of spirulina. (C) 2016 Elsevier B.V. All rights reserved.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据