Effects of Low Temperature Hydrothermal Pretreatment on N Distribution and Pyrolysis Characteristics of Chlorella pyrenoidosa Residue with High Protein Content

Journal Title: Progress in Energy & Fuels - Year 2012, Vol 1, Issue 1


The hydrothermal degradation characteristics of high-protein chlorella in low-temperature hydrothermal pretreatment were studied by hydrothermal kettle. The product yield, elemental composition, energy recovery and key elements C and N of 125-200 °C were investigated. The results show that a large amount of C and N elements are enriched in the aqueous phase, and increasing the temperature (>175 °C) is beneficial to the deamination reaction and thus the relative content of NH3 in the aqueous phase. As the pretreatment temperature increases, the distribution of N in the oil phase product increases gradually and increases rapidly after 175 °C; the solid phase yield and energy recovery rate gradually decrease, but at the same time, its N/C and O/C also decrease, indicating Hydrothermal pretreatment is a upgrading process. The functional group structure and thermal degradation characteristics of the raw materials and algae residue were analyzed by FT-IR, XPS, TG-FTIR-MS and Py-GC-MS. The results show that the hydrothermal pretreatment process changes the relative content of different functional groups of C and N. Compared with the raw materials, the relative content of CC in algae residue increases, while the relative content of C-N and C-O decreases. In addition to protein-N and Quaternary amine-N, a small amount of pyridine-N appeared in the algal residue after pretreatment. The content and structural changes of the functional components of the solid algae residue reduce the release of NH3 and HCN in the thermogravimetric process and the content of the N-containing heterocyclic compound in the rapid pyrolysis product.

Authors and Affiliations

Yinghua He


Related Articles

Reaction Mechanism of Arsenic and Nitrogen Oxides in Coal Combustion

The reaction mechanism of arsenic and nitrogen oxides (N2O, NO2 and NO) was studied by using density functional theory of quantum chemistry B3LYP method. All parameters optimize the geometric configuration of each reacta...

Impact of thedevelopment of the biofuels industry on food securitytake the fuel ethanol industry as an example

As a kind of low carbon energy, biofuels have energy security, optimize energy structure, reduce carbon emissions and other important role.However, theoretical model analysis and foreign experience shows the major food a...

Modeling and simulation of hybrid auxiliary energy unit based on fuel cell/storage device

Traditional aircraft auxiliary power plant noise, large carbon emissions, low efficiency, has been unable to meet the multi-electric/Full-power aircraft development requirements.The fuel cell has the advantages of high e...

Base on burn material power pool, too positiveb19> Power pool, saving power poolOperation optimization of residential distributed energy system

on PV cells, burn material powerPools,residential energy systems for storage batteries for research objects,according to mixed integer linear programmingRationale theory constructbuild its run optimization mathematical m...

Utilization of energy herbage switchgrass production Research progress of fuel ethanol

Energy crop switchgrasscp_ ' CCircleWrgaplusm)low cost of planting,Easy to manage,Short growth period,is highly profitable and has a positive impact on the environmentacts as a hotspot for energy research.nonporous from...

Download PDF file
  • EP ID EP680176
  • DOI -
  • Views 137
  • Downloads 0

How To Cite

Yinghua He (2012). Effects of Low Temperature Hydrothermal Pretreatment on N Distribution and Pyrolysis Characteristics of Chlorella pyrenoidosa Residue with High Protein Content. Progress in Energy & Fuels, 1(1), -. https://europub.co.uk/articles/-A-680176