Combustion of pelletized freshwater macroalgae and pine blends using a fixed bed reactor

被引:2
作者
Gessler B. [1 ]
Jalal A. [2 ,4 ]
Yun J. [3 ]
Peltier E. [2 ]
Depcik C. [1 ]
机构
[1] University of Kansas, Department of Mechanical Engineering, Street, Lawrence, 66045, KS
[2] University of Kansas, Department of Civil, Environmental, and Architectural Engineering, Street, Lawrence, 66045, KS
[3] Korea Research Institute of Bioscience and Biotechnology, Cell Factory Research Center, Daejeon
[4] University of Anbar, Dams and Water Resources Engineering, College of Engineering, Ramadi
基金
新加坡国家研究基金会; 美国国家科学基金会;
关键词
Combustion; Emissions; Fixed bed reactor; Freshwater macroalgae; Pellets;
D O I
10.1016/j.biteb.2021.100871
中图分类号
学科分类号
摘要
Freshwater macroalgae are an underutilized group of ubiquitous algae with greater yield potentials than most terrestrial energy crops, but whose combustion characteristics are not thoroughly understood. This effort compared the combustion of pelletized 100% pine and macroalgae-containing solid fuel mixtures (90%/10% and 75%/25% pine/macroalgae) using a fixed bed co-current reactor. Macroalgae increased pellet density as its protein and calcium content promoted hydrogen bonding and cross-linked the carboxylic acid functionality of polysaccharides. In addition, higher concentrations of freshwater macroalgal biomass required a greater air flow rate to achieve the mixing required for combustion. Since the macroalgae had a higher level of fuel nitrogen and fuel sulfur, emissions of nitrogen and sulfur oxides largely grew with an increasing proportion of this fuel. Overall, pelletized macroalgae can be co-combusted with woody biomass and its pre-treatment (water-rinsing and modulating cultivation conditions) can reduce or eliminate drawbacks found in the harvested naturally-occurring algal material. © 2021 Elsevier Ltd
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