Solar hydrothermal liquefaction: Effect of the operational parameters on the fuels

MRS Advances ◽  
2022 ◽  
Author(s):  
Alejandro Ayala-Cortés ◽  
Pedro Arcelus-Arrillaga ◽  
Daniella Esperanza Pacheco-Catalán ◽  
Camilo Alberto Arancibia-Bulnes ◽  
Heidi Isabel Villafán-Vidales
Keyword(s):  
Hydrothermal Liquefaction ◽  
Operational Parameters

A review on key design and operational parameters to optimize and develop hydrothermal liquefaction of biomass for biorefinery applications

2021 ◽  
Vol 23 (4) ◽  
pp. 1404-1446 ◽  
Author(s):  
Ibrahim Alper Basar ◽  
Huan Liu ◽  
Helene Carrere ◽  
Eric Trably ◽  
Cigdem Eskicioglu
Keyword(s):  
Process Parameters ◽  
Hydrothermal Liquefaction ◽  
Operational Parameters ◽  
Liquefaction Process

This paper summarizes the existing hydrothermal liquefaction process literature and reveals the effect of process parameters on the bio-crude yield.

Effects of Operational Parameters on the Hydrothermal Liquefaction of Enteromorpha prolifera and Products Distribution

2015 ◽  
Vol 9 (1) ◽  
pp. 16-21 ◽  
Author(s):  
J. W. Lu ◽  
Z. D. Liu ◽  
Y. H. Zhang ◽  
B. M. Li ◽  
H. Li ◽  
...  
Keyword(s):  
Hydrothermal Liquefaction ◽  
Operational Parameters

Hydrothermal liquefaction of harvested high-ash low-lipid algal biomass from Dianchi Lake: Effects of operational parameters and relations of products

2015 ◽  
Vol 184 ◽  
pp. 336-343 ◽  
Author(s):  
Chunyan Tian ◽  
Zhidan Liu ◽  
Yuanhui Zhang ◽  
Baoming Li ◽  
Wei Cao ◽  
...  
Keyword(s):  
Algal Biomass ◽  
Hydrothermal Liquefaction ◽  
Dianchi Lake ◽  
Operational Parameters

Electron sources: Past, present, and future

1993 ◽  
Vol 51 ◽  
pp. 764-765
Author(s):  
David C Joy
Keyword(s):  
Glass Tube ◽  
Source Size ◽  
Electron Gun ◽  
Operating Parameters ◽  
Operational Parameters ◽  
Electron Sources ◽  
Difficult Decision ◽  
Probe Size ◽  
Wide Range ◽  
Overall Performance

The electron source is the most important component of the Scanning electron microscope (SEM) since it is this which will determine the overall performance of the machine. The gun performance can be described in terms of quantities such as its brightness, its source size, its energy spread, and its stability and, depending on the chosen application, any of these factors may be the most significant one. The task of the electron gun in an SEM is, in fact, particularly difficult because of the very wide range of operational parameters that may be required e.g a variation in probe size of from a few angstroms to a few microns, and a probe current which may go from less than a pico-amp to more than a microamp. This wide range of operating parameters makes the choice of the optimum source for scanning microscopy a difficult decision.Historically, the first step up from the sealed glass tube ‘cathode ray generator’ was the simple, diode, tungsten thermionic emitter.

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.

AN ASSESSMENT OF OPERATIONAL PARAMETERS FOR THE REMOVAL OF CHLOROPHENOLS FROM WASTEWATER

2010 ◽  
Vol 9 (10) ◽  
pp. 1451-1457 ◽  
Author(s):  
Corina-Petronela Musteret ◽  
Daniela Cailean ◽  
George Barjoveanu ◽  
Carmen Teodosiu
Keyword(s):  
Operational Parameters

UNIVERSAL DIGITAL CONTROL SYSTEM OF A MACHINE AND TRACTOR AGGREGATES

1970 ◽  
pp. 10-14
Author(s):  
А. Yu. Izmaylov ◽  
Ya. P. Lobachevskiy ◽  
V. К. Khoroshenkov ◽  
N. Т. Goncharov ◽  
S. E. Lonin ◽  
...  
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Digital Control ◽  
Crop Protection ◽  
Automatic Regulation ◽  
Regulation System ◽  
Information Control ◽  
Operational Parameters ◽  
Technological Processes ◽  
Control And Management

The introduction of information and digital technologies that support and support all technological processes in the field is an urgent need for the development and implementation of such technology. An organisationally complex and financially intensive project is necessary because of the wide variety of economic entities that differ in the size of production, forms of ownership and socio-economic conditions of production. Automated information control system for mobile units agricultural enterprise provides those-Niko-economic performance, optimum capacity utilization through the use of timely and reliable information on technology. Machine and tractor aggregates are appertained as control objects with variable structure, which is explained by possibility of the system formation from tractor or field machines mobile units with various purposes: tillable, cultivatable, sowing, harvesting and etc. This MTA feature was determined creation of digital control systems of two groups of automatic control and management of the basic energy and operational parameters: tractors, machines and vehicles as part of MTA. To the first group are appertained the automatic control system of tractor motor component loading, motion speed, frictional sliding. To the second group – automatic regulation system of operating depth, seed rate, treatment of liquid combined fertilizers and crop protection agents, filling and driving of various MTA. Novelty of researches consists in methodology of the organization of the centralized control and management of various technological processes at carrying out field works.

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