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Title: Fast pyrolysis of tropical biomass species and influence of water pretreatment on product distributions

Abstract

Here, the fast pyrolysis behaviour of pretreated banagrass was examined at four temperatures (between 400 and 600 C) and four residence times (between ~1.2 and 12 s). The pretreatment used water washing/leaching to reduce the inorganic content of the banagrass. Yields of bio-oil, permanent gases and char were determined at each reaction condition and compared to previously published results from untreated banagrass. Comparing the bio-oil yields from the untreated and pretreated banagrass shows that the yields were greater from the pretreated banagrass by 4 to 11 wt% (absolute) at all reaction conditions. The effect of pretreatment (i.e. reducing the amount of ash, and alkali and alkali earth metals) on pyrolysis products is: 1) to increase the dry bio-oil yield, 2) to decrease the amount of undetected material, 3) to produce a slight increase in CO yield or no change, 4) to slightly decrease CO 2 yield or no change, and 5) to produce a more stable bio-oil (less aging). Char yield and total gas yield were unaffected by feedstock pretreatment. Four other tropical biomass species were also pyrolyzed under one condition (450°C and 1.4 s residence time) for comparison to the banagrass results. The samples include two hardwoods: leucaena andmore » eucalyptus, and two grasses: sugarcane bagasse and energy-cane. A sample of pretreated energy-cane was also pyrolyzed. Of the materials tested, the best feedstocks for fast pyrolysis were sugarcane bagasse, pretreated energy cane and eucalyptus based on the yields of 'dry bio-oil', CO and CO 2. On the same basis, the least productive feedstocks are untreated banagrass followed by pretreated banagrass and leucaena.« less

Authors:
 [1];  [1];  [2];  [3];  [4]
  1. Univ. of Hawaii, Honolulu, HI (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Sandia National Lab. (SNL-CA), Livermore, CA (United States)
  4. National Univ. of Ireland, Galway (Ireland)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1323898
Alternate Identifier(s):
OSTI ID: 1379115
Report Number(s):
SAND2016-8567J
Journal ID: ISSN 1932-6203; 647074
Grant/Contract Number:  
AC04-94AL85000; AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
PLoS ONE
Additional Journal Information:
Journal Volume: 11; Journal Issue: 3; Journal ID: ISSN 1932-6203
Publisher:
Public Library of Science
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS

Citation Formats

Morgan, Trevor James, Turn, Scott Q., Sun, Ning, George, Anthe, and Gupta, Vijai. Fast pyrolysis of tropical biomass species and influence of water pretreatment on product distributions. United States: N. p., 2016. Web. doi:10.1371/journal.pone.0151368.
Morgan, Trevor James, Turn, Scott Q., Sun, Ning, George, Anthe, & Gupta, Vijai. Fast pyrolysis of tropical biomass species and influence of water pretreatment on product distributions. United States. doi:10.1371/journal.pone.0151368.
Morgan, Trevor James, Turn, Scott Q., Sun, Ning, George, Anthe, and Gupta, Vijai. Tue . "Fast pyrolysis of tropical biomass species and influence of water pretreatment on product distributions". United States. doi:10.1371/journal.pone.0151368. https://www.osti.gov/servlets/purl/1323898.
@article{osti_1323898,
title = {Fast pyrolysis of tropical biomass species and influence of water pretreatment on product distributions},
author = {Morgan, Trevor James and Turn, Scott Q. and Sun, Ning and George, Anthe and Gupta, Vijai},
abstractNote = {Here, the fast pyrolysis behaviour of pretreated banagrass was examined at four temperatures (between 400 and 600 C) and four residence times (between ~1.2 and 12 s). The pretreatment used water washing/leaching to reduce the inorganic content of the banagrass. Yields of bio-oil, permanent gases and char were determined at each reaction condition and compared to previously published results from untreated banagrass. Comparing the bio-oil yields from the untreated and pretreated banagrass shows that the yields were greater from the pretreated banagrass by 4 to 11 wt% (absolute) at all reaction conditions. The effect of pretreatment (i.e. reducing the amount of ash, and alkali and alkali earth metals) on pyrolysis products is: 1) to increase the dry bio-oil yield, 2) to decrease the amount of undetected material, 3) to produce a slight increase in CO yield or no change, 4) to slightly decrease CO2 yield or no change, and 5) to produce a more stable bio-oil (less aging). Char yield and total gas yield were unaffected by feedstock pretreatment. Four other tropical biomass species were also pyrolyzed under one condition (450°C and 1.4 s residence time) for comparison to the banagrass results. The samples include two hardwoods: leucaena and eucalyptus, and two grasses: sugarcane bagasse and energy-cane. A sample of pretreated energy-cane was also pyrolyzed. Of the materials tested, the best feedstocks for fast pyrolysis were sugarcane bagasse, pretreated energy cane and eucalyptus based on the yields of 'dry bio-oil', CO and CO2. On the same basis, the least productive feedstocks are untreated banagrass followed by pretreated banagrass and leucaena.},
doi = {10.1371/journal.pone.0151368},
journal = {PLoS ONE},
number = 3,
volume = 11,
place = {United States},
year = {2016},
month = {3}
}

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