Journal
BIORESOURCE TECHNOLOGY
Volume 220, Issue -, Pages 378-383Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2016.08.028
Keywords
Salsola collina Pall.; Halophyte; Biomass; Slow pyrolysis; Biochar
Funding
- National Natural Science Foundation of China [41371243, 51276099]
- National Key Technology RD Program [2013BAC02B06]
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Salsola collina Pall. as a typical euhalophyte was slowly pyrolyzed at 300 degrees C, 500 degrees C and 700 degrees C in a fixed-bed system. The physiochemical properties of syngas, bio-oil and biochar were assayed to understand the impact of pyrolysis temperature on these parameters and then to evaluate their potential values. The results showed that syngas yield (26.07-46.37%) increased with pyrolysis temperature, while biochar yield (47.54-26.83%) decreased. Bio-oil yield (26-30%) was hardly affected by pyrolysis temperature. Both syngas and bio-oil had poor values as direct fuel. The euhalophyte-derived biochar had higher aromaticity (H/C 0.16-0.85, O/C 0.06-0.26), higher cation exchange capacity (198.82-435.74 cmol kg(-1)), and higher K+ (59.35-80.42 g kg(-1)) and Na+ (37.56-53.26 g kg(-1)) compared with glycophyte-derived bio-chars. Our findings imply that halophyte biochar may be more suitable to use as a soil conditioner, which is worthy of further study. (C) 2016 Elsevier Ltd. All rights reserved.
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