scholarly journals The Potential of Ethanol Production from Sweet Sorghum in Sub-Saharan Africa as Affected by Variety and Sowing Time

2021 ◽  
pp. 1-16
Author(s):  
Maarouf I. Mohammed ◽  
Salma I. Abdalbagi
Keyword(s):  
Ethanol Production ◽  
Sweet Sorghum ◽  
Ethanol Yield ◽  
Economic Feasibility ◽  
Sub Saharan Africa ◽  
Cane Yield ◽  
Sowing Time ◽  
Cane Juice ◽  
Juice Yield ◽  
Sub Saharan

Renewable bio-energy is receiving worldwide importance in view of depleting fossil energy. Research works on sorghum as bio-fuel crop in sub-Saharan Africa are meager. The study aimed to investigate the potential of sweet sorghum for ethanol production from stem-juice. The experiment was conducted in Sudan, Khartoum State, during 2016-2017. Forty local and exotic sweet sorghum varieties arranged in RCB Design were investigated under irrigated conditions across three sowing times. Yields of cane, juice, sugar, ethanol and related attributes were studied. Highly significant differences (P=.01) were detected among varieties and interaction with sowing time. Ethanol yield potentials for some varieties were comparable to those reported in India and USA (1162-1416 L ha-1). High brix values (20-22%) and cane yields (45-51 ha-1) were encountered. Juice yield was low (3673-13743 L ha-1) probably due to reduced milling efficiency. The exotic materials performed better than the local ones in theoretical ethanol productivity and related attributes other than cane yield. Eight exotic and five local varieties were recommended for ethanol production. None of the Ankolib materials appeared to have notable potential for ethanol production. Interaction of sowing time with variety has great impact on ethanol yield implying the importance of variety option for different sowing times. It was concluded that the study furnished basic data needed for assessing the economic feasibility of ethanol production from irrigated sweet sorghum in sub-Saharan Africa-Sudan.

scholarly journals Adaptability and Stability Study of Selected Sweet Sorghum Genotypes for Ethanol Production under Different Environments Using AMMI Analysis and GGE Biplots

2016 ◽  
Vol 2016 ◽  
pp. 1-14 ◽  
Author(s):  
Justice Kipkorir Rono ◽  
Erick Kimutai Cheruiyot ◽  
Jacktone Odongo Othira ◽  
Virginia Wanjiku Njuguna ◽  
Joseph Kinyoro Macharia ◽  
...  
Keyword(s):  
Sweet Sorghum ◽  
Ethanol Yield ◽  
Block Design ◽  
Cane Yield ◽  
Environment Interaction ◽  
Gge Biplot ◽  
Genotype By Environment ◽  
Cane Juice ◽  
Juice Yield ◽  
Sorghum Genotypes

The genotype and environment interaction influences the selection criteria of sorghum (Sorghum bicolor) genotypes. Eight sweet sorghum genotypes were evaluated at five different locations in two growing seasons of 2014. The aim was to determine the interaction between genotype and environment on cane, juice, and ethanol yield and to identify best genotypes for bioethanol production in Kenya. The experiments were conducted in a randomized complete block design replicated three times. Sorghum canes were harvested at hard dough stage of grain development and passed through rollers to obtain juice that was then fermented to obtain ethanol. Cane, juice, and ethanol yield was analyzed using the additive main effect and multiplication interaction model (AMMI) and genotype plus genotype by environment (GGE) biplot. The combined analysis of variance of cane and juice yield of sorghum genotypes showed that sweet sorghum genotypes were significantly (P<0.05) affected by environments (E), genotypes (G) and genotype by environment interaction (GEI). GGE biplot showed high yielding genotypes EUSS10, ACFC003/12, SS14, and EUSS11 for cane yield; EUSS10, EUSS11, and SS14 for juice yield; and EUSS10, SS04, SS14, and ACFC003/12 for ethanol yield. Genotype SS14 showed high general adaptability for cane, juice, and ethanol yield.

scholarly journals Bio-Fuel Potential of Some Sweet Sorghum Genotypes [Sorghum bicolor (L.) Moench ssp. saccharatum]

2020 ◽  
pp. 15-22
Author(s):  
Ayse Gulgun Oktem ◽  
Abdullah Oktem ◽  
Timucin Tas ◽  
Celal Yucel
Keyword(s):  
Sweet Sorghum ◽  
Ethanol Yield ◽  
Renewable Energy Sources ◽  
Block Design ◽  
Sugar Yield ◽  
Energy Sources ◽  
Juice Yield ◽  
Stalk Yield ◽  
Sorghum Genotypes ◽  
Theoretical Ethanol Yield

The fossil energy sources used in the world are gradually decreasing and limited. Fossil fuels cause environmental pollution, and the unit price is constantly increasing. For this reason, demand for cheaper and renewable energy sources that do not pollute the environment is increasing day by day. The sweet sorghum plant has attracted attention in recent years with its high biomass yield, sugar content and bioethanol yield. In this study, it was aimed to determine the bio-fuel potential of some sweet sorghum genotypes in semi-arid climatic conditions. The experiment was set up in randomized complete block design with 4 replicates. Research was carried out in 2015 under Harran Plain (36o 42’ N and 38o 58’ E) second crop conditions, Sanliurfa, Turkey. In the study 49 genotypes of sweet sorghum were used. Stalk yield, juice yield, syrup yield, brix, sugar yield and theoretical ethanol yield were determined in the study. Significant differences were found between the genotypes for tested characteristics (P≤0.01). Stalk yield ranged from 7110.0 kg da-1 to 24262.5 da-1, juice yield from 2550.0 L da-1 to 12187.5 L da-1, syrup yield from 291.4 L da-1 to 2242.5 L da-1. Also, brix value varied between %7.0 and %18.87, sugar yield between 247.7 da-1 and 1906.1 da-1, Theoretical ethanol yield between 131.9 L da-1 and 1014.8 L da-1. Considering to stalk yield, juice and syrup yield, brix, sugar yield and theoretical ethanol yield; Nebraska sugar, Topper 76, Smith, M81E and Corina genotypes were found as the best. As a result of research, 21 genotypes with better performance than the others were selected for further studies.

Use of insects for fish and poultry compound feed in sub-Saharan Africa – a systematic review

2017 ◽  
Vol 3 (4) ◽  
pp. 289-302 ◽  
Author(s):  
G. Ssepuuya ◽  
V. Namulawa ◽  
D. Mbabazi ◽  
S. Mugerwa ◽  
P. Fuuna ◽  
...  
Keyword(s):  
House Fly ◽  
Economic Feasibility ◽  
Production Costs ◽  
Protein Source ◽  
Sub Saharan Africa ◽  
Scale Insects ◽  
Total Production ◽  
Protein Sources ◽  
Alternative Protein ◽  
Sub Saharan

The cost of compound feed is a constraint in intensive fish and poultry farming, contributing 60-80% of the total production costs, 70% of which is due to fish and soy meal used as protein source. This review presents the extent to which insects have been utilised as an alternative protein source in feed in sub-Saharan Africa (SSA). A key word search of agricultural, biological and multi-disciplinary databases and academic search engines was conducted for literature on the extent of research and utilisation of insects in poultry and fish feed in SSA. There is limited published information on the practice as well as technical and economic feasibility of the use of insects as alternative protein ingredients in compound feed. This is likely because research on the subject is fairly recently initiated and yet to be published. Excluding South Africa, rearing, processing and use of insects is still at experimentation level at laboratory scale. Insects (grasshoppers, house fly maggots, Westwood larvae, termites and garden snail) meal replaced conventional protein sources by 10-100% without affecting the growth performance of fish and poultry. In some cases, insect based feed performed better than conventional feed. Nutritional composition data of insects published for SSA majorly focused on proximate composition and not characterisation of the nutritional quality. Several research and development projects on the technical and economic feasibility, social acceptability and potential social-economic impact are ongoing and expected to increase available data when completed. Published research confirms the potential of insects for use in poultry and fish production systems and mass production and processing of target insects is the next necessary step. Based on available and ongoing research, piloting and up-scaling the use of insects as alternative protein sources in animal feed in partnership with private sector in SSA is necessary. This will confirm and enhance the technical and economic feasibility of using of insects as an alternative protein source on a commercial scale.

scholarly journals Cane Yield and Juice Volume Determine Ethanol Yield in Sweet Sorghum (Sorghum bicolor L. Moench)

2018 ◽  
Vol 1 (2) ◽  
pp. p29 ◽  
Author(s):  
Justice K. Rono ◽  
Erick K. Cheruiyot ◽  
Jacktone O. Othira ◽  
Virginia W. Njuguna
Keyword(s):  
Sorghum Bicolor ◽  
Plant Height ◽  
Sweet Sorghum ◽  
Ethanol Yield ◽  
Block Design ◽  
Morphological Characters ◽  
Sugar Concentration ◽  
Cane Yield ◽  
Production Traits ◽  
Sorghum Bicolor L

Sweet sorghum (Sorghum bicolor L. Moench) contains fermentable sugars in the stem that can be converted to ethanol. The current study aimed at evaluating the performance of three sweet sorghum genotypes with five checks and contributes towards availing suitable sweet sorghum for industrial ethanol production. Field studies were carried out in Kenya at varied locations in a randomized complete block design with three replications. Sorghum was harvested at hard dough stage of grain development and evaluated for several stem juice production traits including plant height, cane yield, juice volume, degrees Brix, total, reducing, and non-reducing sugars, and ethanol yield via juice fermentation. Analyses of variance using SAS version 9.1 showed a significant effect of genotype for morphological characters and ethanol yield. Genotype EUSS10 produced the greatest cane (27.4 T/ha) and juice yield (7806.7 L/ha) whereas ACFC003/12 recorded the greatest ethanol yield (423.1 L/ha). At all sites, EUSS10 had the greatest plant height and days to 50% heading whereas SS04 had the greatest Brix and total sugar concentration. The greatest grain yield and non-reducing sugar concentration was produced by SS17 and SS21, respectively. Results of this study show that though Brix and total sugars are desirable for ethanol yield, cane yield, and juice volume of sweet sorghum determines the ultimate volume of ethanol produced.

scholarly journals Effect of nitrogen fertilization on growth, yield and ethanol production of sweet sorghum (Sorghum bicolor (L. Moench)

2021 ◽  
Vol 11 (2) ◽  
pp. 359-383
Author(s):  
Maria H. Elnasikh ◽  
Mulhima Sh. Ibrahium
Keyword(s):  
Ethanol Production ◽  
Nitrogen Fertilization ◽  
Sweet Sorghum ◽  
Ethanol Yield ◽  
Block Design ◽  
Sugar Content ◽  
Growth Yield ◽  
Research Station ◽  
Sodic Soils ◽  
Green Leaves

Field trials were carried out to test the effect of nitrogen fertilization on the growth, stalks and juice yield, sugar content and ethanol production of sweet sorghum. The experiments were carried out on winter 2013 in the Domonstration Farm of the Faculty of Agriculture, University of Khartoum, Shambat and Experimental Farm of the Soba Research Station for Reclamation of Saline and Sodic soils. The treatments comprised the addition of nitrogen fertilizer (urea) at three levels (0, 43 and 86 Kg N ha-1) and two sweet sorghum genotypes (Baladi and RSSS.11), arranged in randomized complete block design replicated 4 times. Results indicated that there were significant (P ≥ 0.05) differences between genotypes in stem diameter at Soba location, stalk height and leaves area at Shambat location, number of green leaves per plant, stalk juice and ethanol yield in both locations. With the genotype RSSS.11 generally superior over genotype Baladi. Nitrogen fertilization increased significantly (P ≥ 0.05) number of green leaves per plant and leaves area at Shambat location and plant height and juice and ethanol yield in both locations. With the Soba location recorded the highest values over Shambat location and 86 kg N ha-1 recorded the highest ethanol yield (255.6l h-1).

scholarly journals Assessing Ethanol Yield from Fermented Juice of Local and Exotic Sweet Sorghum Varieties Grown in Sudan

2021 ◽  
Vol 12 ◽  
pp. 11-17
Author(s):  
Salma I. Abdalbagi ◽  
Maarouf I. Mohammed
Keyword(s):  
Regression Analysis ◽  
Sweet Sorghum ◽  
Cultural Practices ◽  
Ethanol Yield ◽  
Correlation And Regression Analysis ◽  
Juice Yield ◽  
Ethanol Yields ◽  
Significant Regression ◽  
Theoretical Ethanol Yield ◽  
Fermented Juice

An experiment was conducted in 2017 at Alwaha Project, Khartoum State to study the potential of ethanol yield from fermented juice of local and exotic sweet sorghums. 40 genotypes were arranged in RCB design. Juice yield, ethanol yield as percentage of fermented juice, actual and theoretical ethanol yields were studied. The Baker’s yeast (Saccharomyces cerevisiae) was used in the fermentation process. ANOVA tests, correlation and regression analysis of actual vs theoretical ethanol yield were performed. Significant differences were detected among genotypes for ethanol yields. High ethanol yields as percentage from fermented juice were obtained, but ethanol yield per hectare was relatively low due to low juice yields. The genotypes BlueRibbon and KensasCollies from exotic materials; 5AbjSG51 and S.154 Ab70 from local materials were identified as promising for ethanol production. Correlation between actual ethanol yield and Juice yield was positive and highly significant. Regression analysis indicated that theoretical ethanol yield was little bit overestimated. It was concluded that juice yield is more crucial than ethanol concentration in maximizing ethanol yield of sweet sorghum. More efforts are needed to develop high juice-yielding genotypes. Juice maximization can also be achieved by using efficient milling devices and optimizing cultural practices.

Is Concentrated Solar Power (CSP) a feasible option for Sub-Saharan Africa?: Investigating the techno-economic feasibility of CSP in Tanzania

2019 ◽  
Vol 135 ◽  
pp. 1224-1240 ◽  
Author(s):  
Ahmed Aly ◽  
Ana Bernardos ◽  
Carlos M. Fernandez-Peruchena ◽  
Steen Solvang Jensen ◽  
Anders Branth Pedersen
Keyword(s):  
Solar Power ◽  
Economic Feasibility ◽  
Sub Saharan Africa ◽  
Concentrated Solar Power ◽  
Feasible Option ◽  
Sub Saharan

scholarly journals Ethanol Production Potential of Sweet Sorghum in North and Central Ukraine

2020 ◽  
Vol 14 (1) ◽  
pp. 321-338
Author(s):  
Svitlana O. Rakhmetova ◽  
Olena M. Vergun ◽  
Rostislav Y. Blume ◽  
Oleksandr P. Bondarchuk ◽  
Oksana V. Shymanska ◽  
...  
Keyword(s):  
Ethanol Production ◽  
Sweet Sorghum ◽  
High Performance ◽  
Second Generation ◽  
Ethanol Yield ◽  
Ethanol Productivity ◽  
Green Economy ◽  
Yield Potential ◽  
Dry Matter Content ◽  
Sorghum Genotypes

Background: Sweet sorghum (Sorghum saccharatum (L.) Moench) is a unique crop with great potential to serve both the food and energy industries. It is due to the possibility of (bio)ethanol production both from the juice and biomass of this crop. The sorghum stems juice contains sugar in the levels similar to that of sugarcane. Besides, low cultivation requirements for the sweet sorghum make this crop even more attractive for sugar and ethanol production. In terms of technology, sweet sorghum is seen as a transitional feedstock for the first to the second generation bioethanol production. However, effective technological development of the plant cultivation and processing in the Northern and Central Ukraine is restrained by the lack of a collection of sweet sorghum genotypes and adapted varieties for its large-scale cultivation. Additionally, no evaluations of potential (bio)ethanol productivity have been performed for this region, which is important for efficient implementation of novel biofuel-producing technologies and for successful development of a green economy. Objective: This research was aimed to create a pool of sweet sorghum genotypes with the involvement of worldwide germplasm, analyze their morphology and breed high-yielding plant lines for the efficient production of liquid biofuels for second-generation bioenergy. Based on that, we also aimed to explore the prospects regarding the efficiency of sweet sorghum cultivation for (bio)ethanol production in the Northern and Central Ukraine. Methods and Materials: A valuable gene pool of S. saccharatum (L.) Moench (41 samples) was created; in particular, high-performance genotypes were created for cultivation under the soil-climatic conditions of Ukraine. The bio-morphological features and the yield potential of the plants were determined and the biochemical composition of the phyto-raw materials was determined in different periods of vegetation, in particular, during the technical ripeness of the above-ground mass of plants. The more productive forms and varieties of sugar sorghum in terms of yield, dry matter content, sugar, and energy value of biomass during flowering and waxy ripeness are highlighted. The technological properties of plant biomass for the production of alternative liquid fuels (in particular, bioethanol) have been analyzed. Importantly, optimal cultivation conditions have been elaborated for the newly created sweet sorghum genotypes, and their productivity has also been evaluated. Moreover, for the first time, a detailed study on potential ethanol yield has been conducted. Results: Sweet sorghum has considerable potential in Ukraine as a new sugar-producing energy crop. The germplasm collection of this crop has been created (41 accessions), including introduced and acclimated genotypes and newly bred lines and varieties. The biological performance of sorghum in Ukraine and plant morphology have been analyzed. The most promising genotypes were used for breeding of new high-productive sweet sorghum varieties. The potential (bio)ethanol yield for different sugar feedstocks (juice, grain bagasse) can reach up to 11423 L/ha in total from juice, grain and bagasse. Conclusion: The estimated values of ethanol productivity are comparable to the results of other similar investigations. In conclusion, a high performance of sweet sorghum in Ukraine can be suggested.

scholarly journals Heterosis for Cane, Juice Yield and its Component Traits in Sweet Sorghum

2020 ◽  
Vol 9 (9) ◽  
pp. 2730-2744
Author(s):  
S.R. Arul ◽  
D.V. Kusalkar ◽  
U.S. Dalvi ◽  
M.S. Shinde ◽  
A.S. Totre ◽  
...  
Keyword(s):  
Sweet Sorghum ◽  
Cane Juice ◽  
Juice Yield ◽  
Component Traits

scholarly journals Optimizing the Cooperated “Multi-Countries” Biodiesel Production and Consumption in Sub-Saharan Africa

Energies ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4717 ◽  
Author(s):  
Tito Francisco Ianda ◽  
Emerson Andrade Sales ◽  
Ademar Nogueira Nascimento ◽  
Antonio Domingos Padula
Keyword(s):  
Palm Oil ◽  
Job Creation ◽  
Economic Feasibility ◽  
Production Costs ◽  
Biodiesel Production ◽  
Sub Saharan Africa ◽  
African Countries ◽  
Production And Consumption ◽  
Starting Point ◽  
Sub Saharan

Sub-Saharan African countries present chronic energy shortages and heavy reliance on oil imports for diesel. The small demand and high production costs in some countries have compromised the economic feasibility of the biodiesel industry in the region. Therefore, to overcome these limitations a model of “multi-countries” cooperated production and consumption of biodiesel was proposed for a group of seven neighboring countries. The model explored linear programming and simulations to the problem of minimizing biodiesel production costs considering different types of production and demand restrictions. The data processing was realized using the Solver and Linear Interactive Discrete Optimizer software (LINDO). The simulations and scenarios revealed that palm oil is the crop that minimize the production costs (US$0.82/L) and that, although jatropha was classified in the second place (US$1.05/L), it is the crop with the biggest job creation potential (5.0 times that of the palm oil seeds). These results reveal the presence of a trade-off in the strategy and the choice between different oilseeds: (a) to produce biodiesel from the crop with minimal costs (palm oil) or (b) to choose the one that has the biggest potential for job creation (jatropha). Considering the diesel price between US$0.60 and US$1.14/L at service stations in the region in 2016, both the biodiesel from palm oil and jatropha will need subsidies and fiscal incentives (tax reductions) to be competitive in the fuel market (diesel). The volume of biodiesel to supply the B10 demand in 2031 has the potential to reduce US$ 1.98 billion/year of the expenses on oil imports. It is worth observing that this decision-support model adds the “multi-countries” cooperation perspective as a contribution to the methodological and political approaches about biofuels production and consumption and can be exploited as a starting point for the formulation of policies, strategies, and investment decisions for the establishment of biodiesel production programs.

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