Energy and nutrient recovery efficiencies in biocrude oil produced via hydrothermal liquefaction of Chlorella pyrenoidosa

RSC Advances ◽  
2014 ◽  
Vol 4 (33) ◽  
pp. 16958 ◽  
Author(s):  
Chao Gai ◽  
Yuanhui Zhang ◽  
Wan-Ting Chen ◽  
Peng Zhang ◽  
Yuping Dong
Keyword(s):  
Chlorella Pyrenoidosa ◽  
Hydrothermal Liquefaction ◽  
Nutrient Recovery ◽  
Biocrude Oil

Biocrude oil production and nutrient recovery from algae by two-step hydrothermal liquefaction using a semi-continuous reactor

2014 ◽  
Vol 32 (1) ◽  
pp. 79-87 ◽  
Author(s):  
Sasithorn Sunphorka ◽  
Keerati Prapaiwatcharapan ◽  
Napida Hinchiranan ◽  
Kunn Kangvansaichol ◽  
Prapan Kuchonthara
Keyword(s):  
Oil Production ◽  
Hydrothermal Liquefaction ◽  
Continuous Reactor ◽  
Nutrient Recovery ◽  
Biocrude Oil

Renewable Diesel Blendstocks and Biopriviliged Chemicals Distilled from Algal Biocrude Oil Converted via Hydrothermal Liquefaction

2019 ◽  
Author(s):  
Wan-Ting (Grace) Chen ◽  
Zhenwei Wu ◽  
Buchun Si ◽  
Yuanhui Zhang
Keyword(s):  
Oxidation Stability ◽  
Ash Content ◽  
Hydrothermal Liquefaction ◽  
Fractional Distillation ◽  
Chemical Compositions ◽  
Steam Temperature ◽  
Renewable Diesel ◽  
Commodity Chemicals ◽  
Biocrude Oil ◽  
Specification Analysis

This study aims to produce renewable diesel and biopriviliged chemicals from microalgae that can thrive in wastewater environment. <i>Spirulina</i> (SP) was converted into biocrude oil at 300ºC for a 30-minute reaction time via hydrothermal liquefaction (HTL). Next, fractional distillation was used to separate SP-derived biocrude oil into different distillates. It was found that 62% of the viscous SP-derived biocrude oil can be separated into liquids at about 270ºC (steam temperature of the distillation). Physicochemical characterizations, including density, viscosity, acidity, elemental compositions, higher heating values and chemical compositions, were carried out with the distillates separated from SP-derived biocrude oil. These analyses showed that 15% distillates could be used as renewable diesel because they have similar heating values (43-46 MJ/kg) and carbon numbers (ranging from C8 to C18) to petroleum diesel. The Van Krevelan diagram of the distillates suggests that deoxygenation was effectively achieved by fractional distillation. In addition, GC-MS analysis indicates that some distillates contain biopriviliged chemicals like aromatics, phenols and fatty nitriles that can be used as commodity chemicals. An algal biorefinery roadmap was proposed based on the analyses of different distillates from the SP-derived biocrude oil. Finally, the fuel specification analysis was conducted with the drop-in renewable diesel, which was prepared with 10 vol.% (HTL10) distillates and 90 vol.% petroleum diesel. According to the fuel specification analysis, HTL10 exhibited a qualified lubricity (<520 µm), acidity (<0.3 mg KOH/g) and oxidation stability (>6 hr), as well as a comparable net heat of combustion (1% lower), ash content (29% lower) and viscosity (17% lower) to those of petroleum diesel. Ultimately, it is expected that this study can provide insights for potential application of algal biocrude oil converted via HTL.

Hydrothermal liquefaction of municipal wastewater sludge and nutrient recovery from the aqueous phase

Biofuels ◽  
2021 ◽  
pp. 1-6
Author(s):  
Vinod Kumar ◽  
Krishna Kumar Jaiswal ◽  
Mikhail S. Vlaskin ◽  
Manisha Nanda ◽  
M. K. Tripathi ◽  
...  
Keyword(s):  
Aqueous Phase ◽  
Municipal Wastewater ◽  
Hydrothermal Liquefaction ◽  
Wastewater Sludge ◽  
Nutrient Recovery

Biocrude oil production via hydrothermal liquefaction of food waste in a simplified high-throughput eeactor

2021 ◽  
pp. 125750
Author(s):  
Ruetai Saengsuriwong ◽  
Thossaporn Onsree ◽  
Sanphawat Phromphithak ◽  
Nakorn Tippayawong Conceptualisation
Keyword(s):  
High Throughput ◽  
Food Waste ◽  
Oil Production ◽  
Hydrothermal Liquefaction ◽  
Biocrude Oil

Hydrothermal liquefaction and gasification of biomass and model compounds: a review

2020 ◽  
Vol 22 (23) ◽  
pp. 8210-8232
Author(s):  
Chuang Yang ◽  
Shuzhong Wang ◽  
Jianqiao Yang ◽  
Donghai Xu ◽  
Yanhui Li ◽  
...  
Keyword(s):  
Hydrothermal Liquefaction ◽  
Model Compounds ◽  
Hydrothermal Conversion ◽  
Biocrude Oil

Catalytic hydrotreatment of HTL biocrude oil, SCWG of biomass, and hydrothermal conversion of model compounds are reviewed.

Heterogeneous catalytic upgrading of biocrude oil produced by hydrothermal liquefaction of microalgae: State of the art and own experiments

2016 ◽  
Vol 148 ◽  
pp. 117-127 ◽  
Author(s):  
Diego López Barreiro ◽  
Blanca Ríos Gómez ◽  
Frederik Ronsse ◽  
Ursel Hornung ◽  
Andrea Kruse ◽  
...  
Keyword(s):  
State Of The Art ◽  
Hydrothermal Liquefaction ◽  
Catalytic Upgrading ◽  
Heterogeneous Catalytic ◽  
Biocrude Oil

Biocrude Oil Production through the Maillard Reaction between Leucine and Glucose during Hydrothermal Liquefaction

2019 ◽  
Vol 33 (9) ◽  
pp. 8758-8765 ◽  
Author(s):  
Yi Qiu ◽  
Aersi Aierzhati ◽  
Jun Cheng ◽  
Hao Guo ◽  
Weijuan Yang ◽  
...  
Keyword(s):  
Maillard Reaction ◽  
Oil Production ◽  
Hydrothermal Liquefaction ◽  
Biocrude Oil

Preliminary Study of Photosynthetic Bacteria Treating Hydrothermal Liquefaction Wastewater

2014 ◽  
Vol 1073-1076 ◽  
pp. 810-816
Author(s):  
Guo Yang Yuan ◽  
Hai Feng Lu ◽  
Shi Wei Huang ◽  
Yuan Hui Zhang ◽  
Bao Ming Li ◽  
...  
Keyword(s):  
Light Intensity ◽  
Environmental Pollution ◽  
Biomass Production ◽  
Photosynthetic Bacteria ◽  
Resource Recovery ◽  
Inoculum Size ◽  
Hydrothermal Liquefaction ◽  
Treatment Conditions ◽  
Preliminary Study ◽  
Biocrude Oil

Post hydrothermal liquefaction wastewater (PHWW) was generated during biocrude oil production. It contains lots of carbon, nitrogen and phosphorous elements, which can cause environmental pollution and resource waste. Using photosynthetic bacteria (PSB) to treat this kind of wastewater can realize pollutants elimination and resource recovery. In this work, the feasibility of using PSB to treat PHWW was firstly investigated, and the treatment conditions were optimized. Results showed that the PSB can effectively degrade PHWW. The optimal initial COD concentration, inoculum size and light intensity for PSB to treat PHWW were 6000-10000 mg/L, 50 mg/L and 1000-3500 lux, respectively. With the initial COD concentration of 9000 mg/L, inoculum size of 50 mg/L and light intensity of 1000 lux, the COD, NH3-N, TP removal and biomass production reached to 71%, 90%, 47.2% and 773 mg/L, respectively. This showed that using PSB to treat PHWW can be an alternative method for PHWW nutrients recovery and pollutant treatment.

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