scholarly journals Fruit Bio-Waste Derived Bio-Ethanol Production and Bioelectricity Generation as Renewable Energy

2021 ◽  
Vol 17 (3) ◽  
pp. 82-91
Author(s):  
ABM Sharif Hossain ◽  
Musamm M Uddin
Keyword(s):  
Renewable Energy ◽  
Ethanol Production ◽  
Bioelectricity Generation

UJI KINERJA PADA PROSES PRODUKSI ETANOL MELALUI KOMBINASI PROSES FERMENTASI DAN STRIPPING

EKUILIBIUM ◽  
2012 ◽  
Vol 11 (2) ◽  
Author(s):  
Margono Margono
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Renewable Energy ◽  
Production Process ◽  
Ethanol Production ◽  
Anaerobic Fermentation ◽  
Fermentation Medium ◽  
High Price ◽  
Trickle Bed ◽  
Trickle Bed Bioreactor ◽  
Biofilm Development

<p><strong><em>Abstract:</em></strong> <em>Renewable energy necesity have promote research on ethanol production technology. Ethanol is the potential renewable energy substituting gasoline. However, the conventional problem is high price of the ethanol. The objective of this research was to test the performance of alternative process in producing ethanol, i.e. combination of fermentation process with ethanol stripping in trickle bed bioreactor. The experimental was using Saccharomyces cerevisiae FNCC 3012 and sugarcane bagass as bed particle. It was devided into 2 process steps of biofilm development and ethanol production. Biofilm development was done by circulating medium in bioreactor aerobically. Duration of the biofilm development was 24 hours and followed by ethanol production step which was combinating anaerobic fermentation and stripping process using nitrogen. Production process was conducted for 36 hours lifetime. This method resulted biofilm developing in fermentation medium, not on baggas surfaces. Consequently, ethanol production happened in circulated fermentation medium. The productivity of this method of ethanol production process was not better than the conventional process. Neverherless, the experimental showed that the product stripping and fermentation could be done simultaneously. The stripping process increased ethanol product concentration up to 25% higher than in the broth</em>.</p><p> <strong><em>Keywords:</em></strong> <em>ethanol, Saccharomyces cerevisiae FNCC 3012, trickle bed bioreactor, stripping, biofilm</em></p>

scholarly journals Integrated analysis of land-use, energy and water systems for ethanol production from sugarcane in Bolivia

2020 ◽  
Author(s):  
Jenny Gabriela Pena Balderrama ◽  
Dilip Khatiwada ◽  
Francesco Gardumi ◽  
Thomas Alfstad ◽  
Silvia Ulloa Jimenez ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Ethanol Production ◽  
Environmental Impacts ◽  
Energy Production ◽  
Economic Benefits ◽  
Environmental Benefits ◽  
Energy Output ◽  
Transport Sector ◽  
Integrated Analysis ◽  
Production Chain

Abstract The use of biomass for renewable energy production is one alternative to reduce the environmental impacts of energy production worldwide. Sugarcane-based ethanol is one of the most widespread biofuels in the road transport sector and its development has been encouraged by strong incentives on production and use in several countries. The growing realization on the environmental impacts of ethanol production indicates the need to increase the efficient utilization of biomass resources by optimizing the production chain sustainably. This paper evaluates enhancements in the ethanol production chain quantitatively by identifying opportunities for agricultural intensification and investments in advanced biorefineries in a least-cost optimization model. Results of our model show that significant cost and environmental benefits can be achieved by modernizing sugarcane agriculture in Bolivia. Demands for ethanol and sugar can be met cost-effectively by increasing sugarcane yields from the current country-average of 55.34 ton/ha to 85.7 ton/ha in 2030 with a moderate cropland expansion of 11.4 thousand hectares in the period 2019-2030. Our results further suggest that it is cost-optimal to invest in efficient cogeneration in biorefineries to maximize the renewable energy output and the economic benefits of sugarcane ethanol. Finally, biofuel support in the range of 8-10 US$/GJ is required for investments in second-generation ethanol in biorefineries to be cost-competitive in the medium-term..

scholarly journals Produksi Etanol Berbahan Baku Molasses Melalui Proses Fermentasi Menggunakan Ragi Roti

2021 ◽  
Vol 1 (1) ◽  
pp. 1
Author(s):  
Yustia Wulandari Mirzayanti ◽  
Sugiono . ◽  
Reta Kurniayati
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Renewable Energy ◽  
Ethanol Production ◽  
Incubation Time ◽  
Baker’S Yeast ◽  
Baker's Yeast ◽  
Alcohol Content ◽  
Glucose Content ◽  
Alcohol Production ◽  
Glucose Levels

<table class="NormalTable"><tbody><tr><td width="200"><span class="fontstyle0">One of the alternatives and renewable energy that is being developed is ethanol.<br />Ethanol is better known as Gasohol. Molasses can make Gasohol through the<br />synthesis of molasses fermentation using a yeast starter. This study aims to<br />analyze how the effect of the addition of baker's yeast, the length of fermentation<br />incubation time on the resulting alcohol content. In addition, the yield obtained<br />from the highest amount of ethanol production in the molasses fermentation<br />process. Ethanol production through fermentation synthesis using the help of<br />microorganisms Saccharomyces cerevisiae. Based on the objective review, the<br />variation used is the amount of baker's yeast, namely 0.1; 0.2; 0.3; 0.4; and 0.5%<br />glucose levels. The fermentation times were 24, 48, 72, 96, and 120 hours (T =<br />30?C and pH = 5). Based on these variations, the highest alcohol production<br />was 11%, obtained by adding 0.2% of yeast to the glucose content in the solution.<br />The incubation time is 72 hours. The yield obtained for the highest alcohol<br />content is 4.48%</span></td></tr></tbody></table>

scholarly journals Advances in Clean Fuel Ethanol Production from Electro-, Photo- and Photoelectro-Catalytic CO2 Reduction

Catalysts ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1287
Author(s):  
Yanfang Song ◽  
Wei Chen ◽  
Wei Wei ◽  
Yuhan Sun
Keyword(s):  
Renewable Energy ◽  
Ethanol Production ◽  
Co2 Reduction ◽  
High Energy ◽  
Fuel Ethanol ◽  
High Energy Density ◽  
Clean Fuel ◽  
The Past ◽  
Reduce Carbon Emission ◽  
High Energy Density Fuel

Using renewable energy to convert CO2 to a clean fuel ethanol can not only reduce carbon emission through the utilization of CO2 as feedstock, but also store renewable energy as the widely used chemical and high-energy-density fuel, being considered as a perfect strategy to address current environment and energy issues. Developing efficient electrocatalysts, photocatalysts, and photoelectrocatalysts for CO2 reduction is the most crucial keystone for achieving this goal. Considerable progresses in CO2-based ethanol production have been made over the past decades. This review provides the general principles and summarizes the latest advancements in electrocatalytic, photocatalytic and photoelectrocatalytic CO2 conversion to ethanol. Furthermore, the main challenges and proposed future prospects are illustrated for further developments in clean fuel ethanol production.

scholarly journals Evaluation of sweet sorghum and sudangrass varieties by the viewpoint of bioethanol production

2014 ◽  
pp. 57-61
Author(s):  
János Jóvér
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Ethanol Production ◽  
Sweet Sorghum ◽  
Fossil Fuels ◽  
Production Capacity ◽  
Bioethanol Production ◽  
The European Union ◽  
Ethanol Yields ◽  
The Impact

Bioenergy and biofuels are very important in today’s energy policy. These kinds of energy resources have several advantages against fossil fuels. Environmental protection is a cardinal point of widespreading these technologies but the economic considerations are important as well. In order to improve the rate of the renewable energy in the energy consumption, the European Union settled down a program which determines a minimum ratio of renewable energy in the energy consumption for each member country of the EU. To fulfil the requirements bioenergy and biofuels should be produced. This production procedure needs adequate stocks which are commonly agricultural products.One of the promising stocks is sorghum. This plant fits for bioethanol production due to its juice content being rich in sugar. In this study six sweet sorghum hybrids, two sudangrass hybrids and a sudangrass variety have been evaluated to determine their theorical ethanol production capacity.On the score of the results of the year 2009 it can be set that sudangrasses have a lower theorical ethanol capacity than sweet sorghums have. In the case of sweet sorghums 1860.29–2615.47 l ha-1 ethanol yields had been calculated, while the sudangrasses had only 622.96–801.03 l ha-1. After that throughout three years (2011–2013) the sweet sorghum hybrids have been evaluated in order to determine the fluctuations of the ethanol production capacity caused by the impact of the years. As a result 2425.44–4043.6 l ha-1 theorical ethanol capacities have been calculated, which means that sweet sorghums can be an adequate stock to produce bioethanol.

scholarly journals Integrated analysis of land-use, energy and water systems for ethanol production from sugarcane in Bolivia

2020 ◽  
Author(s):  
Jenny Gabriela Pena Balderrama ◽  
Dilip Khatiwada ◽  
Francesco Gardumi ◽  
Thomas Alfstad ◽  
Silvia Ulloa Jimenez ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Ethanol Production ◽  
Environmental Impacts ◽  
Energy Production ◽  
Cost Optimization ◽  
Economic Benefits ◽  
Energy Output ◽  
Transport Sector ◽  
Integrated Analysis ◽  
Production Chain

Abstract The use of biomass for renewable energy production is one alternative to reduce the environmental impacts of energy production worldwide. Sugarcane-based ethanol is one of the most widespread biofuels in the road transport sector and its development has been encouraged by strong incentives on production and use in several countries. The growing realization on the environmental impacts of ethanol production indicates the need to increase the efficient utilization of biomass resources by optimizing the production chain sustainably. This papers evaluates enhancements in the ethanol production chain quantitatively by identifying opportunities for agricultural intensification and for investments in advanced biorefineries in a least-cost optimization model. Results of our model show that significant cost and environemtal benefits can be achieved by modernizing sugarcane agriculture in Bolivia. Demands for ethanol and sugar can be met cost-effectively by increasing sugarcane yields from the current country-average of 55.34 ton/ha to 85.7 ton/ha in 2030 with a moderate cropland expansion of 14.4 thousand hectares in the period 2019-2030. Our results further suggest that it is cost-optimal to invest in current technological advancements in efficient cogeneration to maximize the renewable energy output and the economic benefits of sugarcane ethanol. Finally, biofuel support in the range of 8-10 US$/GJ is required for investments in second-generation ethanol to be cost-competitive in the medium-term.

scholarly journals Bio-ethanol production from waste biomass of Pogonatherum crinitum phytoremediator: an eco-friendly strategy for renewable energy

3 Biotech ◽  
2018 ◽  
Vol 8 (3) ◽  
Author(s):  
Pankajkumar R. Waghmare ◽  
Anuprita D. Watharkar ◽  
Byong-Hun Jeon ◽  
Sanjay P. Govindwar
Keyword(s):  
Renewable Energy ◽  
Ethanol Production ◽  
Waste Biomass
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