The effect of two pretreatment levels on the pyrolysis characteristics of water hyacinth

Zhongliang Yao, Xiaoqian Ma and Zhiyuan Xiao

Renewable Energy, 2020, vol. 151, issue C, 514-527

Abstract: The effect of two-level pretreatment on the slow/fast pyrolysis characteristics of water hyacinth were studied. The water/acid wash had the significant effect on remove the sulfur, nitrogen and ash, which can greatly improve the quality of pyrolysis products. water/acid wash had negative impact on the heavy oil in the hydrothermal system. The heavy oil yield of the Hy-R, Hy-W and Hy-A were 37.24%, 25.70% and 27.06 w/w %, respectively. Among all the pretreatments, except for K element, all the detected heavy metals (Al, As, Cr, Cu, Mn, Ni and Zn) accumulated. In addition, the CPI of Tr-R, and Tr-W and Tr- A were −23.91, −13.93 and −18.85 × (10−7/(min2 × °C3) which were much larger than that of Hy-R, Hy-W and Hy-A (−2.99,-6.60 and −9.26 × (10−7/(min2 × °C3)). The absorbance of NH3, HCN, C=O, CO, CO2, CH4 and H2O were detected in slow pyrolysis. The pyrolysis effectiveness index of Hy-R reached the largest value of 0.375. The volatiles of fast pyrolysis were divided into fourteen groups, including CO2, alcohols, acids, phenols, aromatic hydrocarbons, esters, aldehydes, ketones, aliphatic & alicyclic hydrocarbons, nitrogen containing compounds, organo-sulfur compounds, sugars, ethers, furans to present the compositions of the pyrolysis vapors.

Keywords: Torrefaction; Hydrothermal treatment; TG-FTIR; Py-GC/MS; Pyrolysis products (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0960148119317331
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:151:y:2020:i:c:p:514-527

DOI: 10.1016/j.renene.2019.11.046

Access Statistics for this article

Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides

More articles in Renewable Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().