Optimal Intensity and Biomass Density for Biofuel Production in a Thin-Light-Path Photobioreactor

2015 ◽  
Vol 49 (10) ◽  
pp. 6327-6334 ◽  
Author(s):  
Aadhar Jain ◽  
Nina Voulis ◽  
Erica E. Jung ◽  
Devin F. R. Doud ◽  
William B. Miller ◽  
...  
Keyword(s):  
Biofuel Production ◽  
Light Path ◽  
Biomass Density ◽  
Optimal Intensity

scholarly journals Variables Governing Photosynthesis and Growth in Microalgae Mass Cultures

Processes ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 820
Author(s):  
Jiří Masojídek ◽  
Karolína Ranglová ◽  
Gergely Ernö Lakatos ◽  
Anna Silva Benavides ◽  
Giuseppe Torzillo
Keyword(s):  
Fast Response ◽  
Photosynthetic Performance ◽  
Light Path ◽  
Oxygen Production ◽  
Outdoor Cultivation ◽  
Biomass Density ◽  
Dark Cell ◽  
Mass Cultures ◽  
Food And Feed ◽  
Production Monitoring

Since the 1950s, microalgae have been grown commercially in man-made cultivation units and used for biomass production as a source of food and feed supplements, pharmaceuticals, cosmetics and lately biofuels, as well as a means for wastewater treatment and mitigation of atmospheric CO2 build-up. In this work, photosynthesis and growth affecting variables—light intensity, pH, CO2/O2 exchange, nutrient supply, culture turbulence, light/dark cell cycling, biomass density and culture depth (light path)—are reviewed as concerns in microalgae mass cultures. Various photosynthesis monitoring techniques were employed to study photosynthetic performance to optimize the growth of microalgae strains in outdoor cultivation units. The most operative and reliable techniques appeared to be fast-response ones based on chlorophyll fluorescence and oxygen production monitoring, which provide analogous results.

NUMERICAL STUDY FOR THAILAND: MATHEMATICAL MODEL OF PRODUCTION AND LOGISTIC PLANNING FOR SUGARCANES USED IN BIOFUEL PRODUCTION

2013 ◽  
Author(s):  
Pancheewa Benjamasutin ◽  
◽  
Ponthong Rijana ◽  
Phongchayont Srisuwan ◽  
Aussadavut Dumrongsiri
Keyword(s):  
Mathematical Model ◽  
Numerical Study ◽  
Biofuel Production ◽  
Logistic Planning

USE OF NORTHERN ECOTYPE SOYBEANS FOR BIOFUEL PRODUCTION

2020 ◽  
pp. 22-30
Author(s):  
SERGEY N. DEVYANIN ◽  
◽  
VLADIMIR A. MARKOV ◽  
ALEKSANDR G. LEVSHIN ◽  
TAMARA P. KOBOZEVA ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Soybean Oil ◽  
Diesel Fuel ◽  
Experimental Studies ◽  
Motor Fuel ◽  
Biodiesel Production ◽  
Biofuel Production ◽  
Exhaust Gases ◽  
Oil Productivity ◽  
Toxic Components

The paper presents the results of long-term research on the oil productivity and chemical composition of soybean oil of the Northern ecotype varieties in the Central Non-Black Earth Region. The authors consider its possible use for biodiesel production. Experiments on growing soybeans were carried out on the experimental fi eld of Russian State Agrarian University –Moscow Timiryazev Agricultural Academy (2008-2019) on recognized ultra-early ripening varieties of the Northern ecotype Mageva, Svetlaya, Okskaya (ripeness group 000). Tests were set and the research results were analyzed using standard approved methods. It has been shown that in conditions of high latitudes (57°N), limited thermal resources of the Non-Chernozem zone of Russia (the sum of active temperatures of the growing season not exceeding 2000°С), the yield and productivity of soybeans depend on the variety and moisture supply. Over the years, the average yield of soybeans amounted to 1.94 … 2.62 t/ha, oil productivity – 388 … 544 kg/ha, oil content – 19…20%, the content of oleic and linoleic fatty acids in oil – 60%, and their output from seeds harvested – 300 kg/ha. It has been established that as soybean oil and diesel fuel have similar properties,they can be mixed by conventional methods in any proportions and form stable blends that can be stored for a long time. Experimental studies on the use of soybean oil for biodiesel production were carried out on a D-245 diesel engine (4 ChN11/12.5). The concentrations of toxic components (CO, CHx, and NOx) in the diesel exhaust gases were determined using the SAE-7532 gas analyzer. The smoke content of the exhaust gases was measured with an MK-3 Hartridge opacimeter. It has been experimentally established that the transfer of a diesel engine from diesel fuel to a blend of 80% diesel fuel and 20% lubrication oil leads to a change in the integral emissions per test cycle: nitrogen oxides in 0.81 times, carbon monoxide in 0.89 times and unburned hydrocarbons in 0.91 times, i.e. when biodiesel as used as a motor fuel in a serial diesel engine, emissions of all gaseous toxic components are reduced. The study has confi rmed the expediency of using soybeans of the Northern ecotype for biofuel production.

The sugar and alcohol industry in the biofuels and cogeneration era: a paradigm change (part II)

2014 ◽  
pp. 97-104 ◽  
Author(s):  
Electo Eduardo Silv Lora ◽  
Mateus Henrique Rocha ◽  
José Carlos Escobar Palacio ◽  
Osvaldo José Venturini ◽  
Maria Luiza Grillo Renó ◽  
...  
Keyword(s):  
Large Scale ◽  
New Technologies ◽  
Process Integration ◽  
Animal Feed ◽  
Raw Materials ◽  
Biofuel Production ◽  
New Paradigm ◽  
Alcohol Industry ◽  
Feed Production ◽  
Steam Parameters

The aim of this paper is to discuss the major technological changes related to the implementation of large-scale cogeneration and biofuel production in the sugar and alcohol industry. The reduction of the process steam consumption, implementation of new alternatives in driving mills, the widespread practice of high steam parameters use in cogeneration facilities, the insertion of new technologies for biofuels production (hydrolysis and gasification), the energy conversion of sugarcane trash and vinasse, animal feed production, process integration and implementation of the biorefinery concept are considered. Another new paradigm consists in the wide spreading of sustainability studies of products and processes using the Life Cycle Assessment (LCA) and the implementation of sustainability indexes. Every approach to this issue has as an objective to increase the economic efficiency and the possibilities of the sugarcane as a main source of two basic raw materials: fibres and sugar. The paper briefly presents the concepts, indicators, state-of-the-art and perspectives of each of the referred issues.

AN ECONOMIC STUDY FOR THE IMPACT OF BIOFUEL PRODUCTION EXPANSION

2018 ◽  
Vol 3 (2) ◽  
pp. 259-260
Author(s):  
I. S. Ali ◽  
A. M. Taryal ◽  
S. A. Abou-El Naga ◽  
M. M. Abd-El Menem
Keyword(s):  
Biofuel Production ◽  
Economic Study ◽  
The Impact

Final Report: Scale-up of Algal Biofuel Production Using Waste Nutrients

2018 ◽  
Author(s):  
Tryg Lundquist ◽  
◽  
Ruth Spierling ◽  
◽  
Keyword(s):  
Scale Up ◽  
Biofuel Production ◽  
Final Report ◽  
Algal Biofuel

Genetically Engineered Microalgae for Enhanced Biofuel Production

2016 ◽  
Vol 5 (4) ◽  
pp. 256-265 ◽  
Author(s):  
Vitaly Korkhovoy ◽  
Petro Tsarenko ◽  
Yaroslav Blume
Keyword(s):  
Genetically Engineered ◽  
Biofuel Production
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