scholarly journals A Feasibility Study of Cellulosic Isobutanol Production—Process Simulation and Economic Analysis

Processes ◽  
2019 ◽  
Vol 7 (10) ◽  
pp. 667 ◽  
Author(s):  
Avraam Roussos ◽  
Nikiforos Misailidis ◽  
Alexandros Koulouris ◽  
Francesco Zimbardi ◽  
Demetri Petrides
Keyword(s):  
Energy Demand ◽  
Production Cost ◽  
Fossil Fuels ◽  
Raw Materials ◽  
Downstream Processing ◽  
Economic Feasibility ◽  
Unit Production Cost ◽  
Product Titer ◽  
Product Removal ◽  
The Cost

Renewable liquid biofuels for transportation have recently attracted enormous global attention due to their potential to provide a sustainable alternative to fossil fuels. In recent years, the attention has shifted from first-generation bioethanol to the production of higher molecular weight alcohols, such as biobutanol, from cellulosic feedstocks. The economic feasibility of such processes depends on several parameters such as the cost of raw materials, the fermentation performance and the energy demand for the pretreatment of biomass and downstream processing. In this work, two conceptual process scenarios for isobutanol production, one with and one without integrated product removal from the fermentor by vacuum stripping, were developed and evaluated using SuperPro Designer®. In agreement with previous publications, it was concluded that the fermentation titer is a crucial parameter for the economic competitiveness of the process as it is closely related to the energy requirements for product purification. In the first scenario where the product titer was 22 g/L, the energy demand for downstream processing was 15.8 MJ/L isobutanol and the unit production cost of isobutanol was $2.24/L. The integrated product removal by vacuum stripping implemented in the second scenario was assumed to improve the isobutanol titer to 50 g/L. In this case, the energy demand for the product removal (electricity) and downstream processing were 1.8 MJ/L isobutanol and 10 MJ/L isobutanol, respectively, and the unit production cost was reduced to $1.42/L. The uncertainty associated with the choice of modeling and economic parameters was investigated by Monte Carlo simulation sensitivity analysis.

scholarly journals CALCULATION OF PRODUCTION COST IN UD. USAHA BARU WITH FULL COSTING METHOD

2019 ◽  
Vol 4 (1) ◽  
pp. 28-42
Author(s):  
Suprianto Suprianto ◽  
Bina Andari ◽  
Yely Sulistyawati
Keyword(s):  
Production Cost ◽  
Raw Materials ◽  
Analysis Data ◽  
Production Costs ◽  
Raw Material ◽  
Labor Costs ◽  
Material Costs ◽  
Other Information ◽  
Cost Of Production ◽  
The Cost

This study aims to evaluate the calculation of cost of production. The accuracy of the calculation of cost of production is influenced by the suitability in the accumulation and calculation of production costs which includes the cost of raw materials, direct labor costs and other costs (factory overhead costs). This research was conducted at UKM UD. Usaha Baru which aims to determine the calculation of cost of production at UD. Usaha Baru and to find out whether the calculation of cost of production is in accordance with the full costing method. The technique (method) of data analysis used in this study is quantitative analysis. Data collection techniques use interview techniques directly to obtain information from the number of units of monthly production, raw material costs, direct labor costs, and factory overhead costs, as well as other information relating to the calculation of cost of production. Based on the evaluation results for the calculation of raw material costs and labor costs are in accordance with the full costing method. However, the calculation of factory overhead costs is not in accordance with the full costing method because there are costs that have not been included in the calculation of production costs.

scholarly journals Bamboo as an Alternative Bioenergy Crop and Powerful Ally for Land Restoration in Indonesia

2018 ◽  
Vol 10 (12) ◽  
pp. 4367 ◽  
Author(s):  
Roshan Sharma ◽  
Jaya Wahono ◽  
Himlal Baral
Keyword(s):  
Energy Demand ◽  
Fossil Fuels ◽  
Perennial Grass ◽  
Economic Feasibility ◽  
Bioenergy Crop ◽  
Land Restoration ◽  
Degraded Land ◽  
Bioenergy Feedstock ◽  
Bioenergy Production ◽  
Selection Of Species

The energy demand in Indonesia has increased significantly with its population growth, urbanization, and economic development. The growing concern of meeting energy demand while reducing dependency on fossil fuels has resulted in an increasing demand for renewable energy. As a country with a rich biomass base, bioenergy is now an important component of Indonesia’s energy agenda. However, a crucial problem in bioenergy production is the selection of species that can provide a sustainable supply of feedstock without having an impact on food security and the environment. In this context, we discuss the characteristics and benefits of using bamboo, a perennial grass, as a potential species for bioenergy feedstock in Indonesia. We describe the fuel characteristics of bamboo along with the possibility to align its cultivation, production, and usage with environmental and developmental agendas which makes it a suitable bioenergy crop in the country. In addition, its ability to grow on degraded lands, fast growth, long root system, and easy maintenance prove it as a powerful ally for the restoration of degraded land. We recommend in-depth research on the social, ecological, and economic feasibility of using this species for bioenergy production.

scholarly journals Photovoltaic Solar Energy: Is It Applicable in Brazil? – A Review Applied to Brazilian Case

2019 ◽  
Vol 66 (2) ◽  
pp. 99-120
Author(s):  
Wilmer Emilio García Moreno ◽  
Andressa Ullmann Duarte ◽  
Litiéle dos Santos ◽  
Rogério Vescia Lourega
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Solar Energy ◽  
Energy Demand ◽  
Fossil Fuels ◽  
Cost Of Energy ◽  
Photovoltaic Solar Energy ◽  
The Cost ◽  
Photovoltaic Technologies ◽  
Brazilian Case

AbstractThe photovoltaic technologies have been developed year by year in different countries; however, there are some countries where this kind of energy is being born, such as the Brazilian case. In this paper, some important parameters are analysed and applied to different solar cell materials, identifying that if the fossil fuels were substituted by solar cells, it would reduce the CO2 emissions by 93.2%. In addition, it is shown that the efficiency of solar cells is not as farther as it could be thought from coal thermoelectrical plants in Brazil and the cost of energy using solar cells could be as good as these thermoelectrical plants. Finally, the potentiality of Brazilian territory to implant this technology is presented, identifying that with the use of 0.2% of the territory, the energy demand could be supplied.

Key drivers influencing the commercialization of ethanol-based biorefineries

1969 ◽  
Vol 16 (3) ◽  
Author(s):  
Anuj K Chandel ◽  
Om V Singh ◽  
Gajula Chandrasekhar ◽  
Linga Venkateswar Rao ◽  
Mangamoori Lakshmi Narasu
Keyword(s):  
Ethanol Production ◽  
Large Scale ◽  
Fossil Fuels ◽  
Process Integration ◽  
Raw Materials ◽  
Cellulase Production ◽  
Bioethanol Production ◽  
Recent Developments ◽  
Key Drivers ◽  
The Cost

The imposition of ethanol derived from biomass for blending in gasoline would make countries less dependent on current petroleum sources, which would save foreign exchange reserves, improve rural economies and provide job opportunities in a clean and safe environment. The key drivers for successful commercial ethanol production are cheap raw materials, economic pretreatment technologies, in-house cellulase production with high and efficient titers, high ethanol fermentation rates, downstream recovery of ethanol and maximum by-products utilization. Furthermore, recent developments in engineering of biomass for increased biomass, down-regulation of lignin synthesis, improved cellulase titers and re-engineering of cellulases, and process integration of the steps involved have increased the possibility of cheap bioethanol production that competes with the price of petroleum. Recently, many companies have come forward globally for bioethanol production on a large scale. It is very clear now that bioethanol will be available at the price of fossil fuels by 2010. This article intends to provide insight and perspectives on the important recent developments in bioethanol research, the commercialization status of bioethanol production, the step-wise cost incurred in the process involved, and the possible innovations that can be utilized to reduce the cost of ethanol production.

Progress in the New Fermentation Technologies of Fuel Ethanol

2011 ◽  
Vol 233-235 ◽  
pp. 1427-1430
Author(s):  
Yu Shen ◽  
Hai Dong Zhang ◽  
Xu Xu Zheng ◽  
Xian Ming Zhang ◽  
Jin Song Guo ◽  
...  
Keyword(s):  
Emission Reduction ◽  
Production Cost ◽  
Fossil Fuels ◽  
New Technologies ◽  
Raw Materials ◽  
Fuel Ethanol ◽  
Research Progress ◽  
Polluted Water ◽  
The Sustainable Development ◽  
Application Prospects

Fuel ethanol converted from biomass is a reliable substitute for fossil fuels, and lays people’s hope on the sustainable development in the fields of energy and climate. The limitation in source of raw materials and production cost are bottlenecks which restrain the wide use of fuel ethanol. This article makes an overview of the current research progress in the new technologies from the directions in the exploiting of raw materials and energy saving and polluted water emission reduction in the production process of fuel ethanol, and analyzes the potential application prospects and advantages of various new technologies.

scholarly journals Economic perspective of hybrid wind-diesel technology for commercial loads of Dhahran Saudi Arabia: A step towards sustainable future

2015 ◽  
Vol 19 (1) ◽  
pp. 167-178
Author(s):  
S.M. Shaahid
Keyword(s):  
Saudi Arabia ◽  
Hybrid Systems ◽  
Carbon Emissions ◽  
Energy Demand ◽  
Wind Farm ◽  
Fossil Fuels ◽  
Residential Buildings ◽  
Renewable Energy Sources ◽  
Economic Feasibility ◽  
Commercial Building

The governments world-wide are deliberating to promote renewable energy sources such as wind to mitigate increasing demand of energy and to overcome effects of pollution due to to use of fossil fuels. Integration of wind turbine generators (WTG) with the diesel plants is pursued widely to reduce dependence on fossil-fuels and to reduce carbon emissions. Literature indicates that commercial/residential buildings in the Kingdom of Saudi Arabia (K.S.A) consume an estimated 10 - 40% of the total electric energy generated. The aim of this study is to analyze wind-speed data of Dhahran (East-Coast, K.S.A.) to assess the economic feasibility of utilizing hybrid wind-diesel power systems to meet the load requirements of a typical commercial building (with annual electrical energy demand of 620,000 kWh). The monthly average wind speeds range from 3.3 to 5.6 m/s. The hybrid systems simulated consist of different combinations of 100 kW commercial WTG supplemented with diesel generators. NREL?s (HOMER Energy?s) HOMER software has been employed to perform the techno-economic analysis. The simulation results indicate that for a hybrid system comprising of 100 kW wind capacity together with 175 kW diesel system, the wind penetration (at 37 m hub-height, with 0% annual capacity shortage) is 25%. The cost of generating energy (COE, $/kWh) from this hybrid wind-diesel system has been found to be 0.121 $/kWh (assuming diesel fuel price of 0.1$/liter). The study exhibits that for a given hybrid configuration, the number of operational hours of diesel gensets decreases with increase in wind farm capacity. Emphasis has also been placed on wind penetration, un-met load, energy production and COE, excess electricity generation, percentage fuel savings and reduction in carbon emissions (relative to diesel-only situation) of different hybrid systems, cost break-down of wind-diesel systems, COE of different hybrid systems, etc.

scholarly journals Analisis Perhitungan Dan Penentuan Harga Pokok Produksi Pada PT. Mutifa Medan

2019 ◽  
Vol 2 (1) ◽  
pp. 12
Author(s):  
John Fisher Gulo ◽  
Kamil Mustafa ◽  
Ninny Siregar
Keyword(s):  
Production Cost ◽  
Raw Materials ◽  
Descriptive Analysis ◽  
Production Costs ◽  
Total Production ◽  
Labor Costs ◽  
Average Production ◽  
Qualitative Descriptive ◽  
Cost Of Production ◽  
The Cost

<p>The cost of production is needed to determine the cost of production of a product. Costs incurred to produce the product must be clear, so that the determination of the cost of production would be appropriate. Imprecision in calculating the cost of production will be misleading in making management decisions. Data collection methods used in this study include: Documentation, Interview, Observation. This study analyzed using qualitative descriptive analysis comparing the theory with actual results of the company. PT MUTIFA in determining the cost of production using the full costing method. PT MUTIFA in determining the cost of production, all costs incurred are treated as production costs, both the cost of major raw materials, cost of auxiliary materials, packaging materials costs and production overhead. Classification of production costs in accordance with the theory that exists is composed of material costs, labor costs and production overhead costs. Total production cost per month of each element calculation the average monthly cost is Rp. 73.111.118,260,- and the average number of finished products Paracetamol tablet 500 mg tablet is as much 566,666.67 per month. Based on data on average production costs in 2009, then the production cost per tablet is .Rp. 129,019.</p>

scholarly journals ANALISYS PRODUCTION COST of SAWMILL ON THE PT KATINGAN TIMBER CELEBES IN WAMLANA VILLAGE BURU REGENCY

2020 ◽  
Vol 4 (1) ◽  
pp. 64-79
Author(s):  
Fitri N.S. Ellis ◽  
Troice E. Siahaya ◽  
Mersiana Sahureka
Keyword(s):  
Production Cost ◽  
Raw Materials ◽  
Labor Cost ◽  
Research Data ◽  
Overhead Cost ◽  
Interview Methods ◽  
Sawmill Industry ◽  
Cost Of Production ◽  
The Difference ◽  
The Cost

The objective of this study was to find out components of production cost and analyzing the cost of production materials which used full costing method and variable costing method. This research was conducted at October 2019 on PT. Katingan Timber Celebes Wamlana Village, Fenaleisela Subdistrict, Buru Regency. The company is a buried sawmill industry at Buru Island when has a primary industrial license for timber. Research data were collected by observation, documentation and interview methods, and then analyzed by full costing and variable costing methods. The result showed that the components of production cost consist of raw materials cost, direct labor cost used fixed factory overhead cost and variable factory overhead cost. The cost of production used costing method have value of  Rp.5.120.341.644,- more higher compered to variable costing is Rp.4.542.320.899,- the difference value of the cost of production due to full costing methods which imposes the fixed overhead cost and the variable overhead cost, that the cost of production is higher than with variable costing methods which imposes by factory overhead cost.

scholarly journals Prioritizing Energy Sources to Generate Electricity (Application of Fuzzy Logic)

2015 ◽  
Vol 10 (2) ◽  
pp. 414-421
Author(s):  
Bahareh Hashemlou ◽  
Hossein Sadeghi ◽  
Arashk Masaeli ◽  
Mohammadhadi Hajian ◽  
Shima Javaheri
Keyword(s):  
Natural Gas ◽  
Energy Demand ◽  
Power Plants ◽  
Fossil Fuels ◽  
Electrical Energy ◽  
Electricity Production ◽  
Fuzzy Preference Relations ◽  
Safety And Reliability ◽  
The Cost ◽  
Day By Day

Organizations, institutions, and different sectors of manufacturing, services and agriculture are constantly making decisions. Each of the aforementioned sectors, have strategies, tactics, and various functions that play a basic role in reaching the objectives. On the other hand, energy demand in developing countries is increasing day by day. The exact calculation of the cost per unit of electricity generated by power plants is not easy. Therefore, this study according to four sources of natural gas, nuclear energy, renewable energy and other fossil fuels other than natural gas that are used in a variety of electricity production plants is trying to clarify the ranking of generation electricity approach using "fuzzy preference relations" analysis. Accordingly, three models were used and the results showed that natural gas, with regard to the four criteria of low investment cost, low power, lack of pollution and the safety and reliability of electrical energy has priority over other alternatives. Full preferred model results also suggested that the energy of natural gas, renewable energies, nuclear and other fossil fuels should be considered in a priority for power generation. Sensitivity analysis results moreover demonstrated that the above models are not affected by the threshold values ​​and the full stability of the models is observed.

scholarly journals Strategi Penetapan Harga Jual Produk Melalui Perhitungan Cost of Goods Manufacture Menggunakan Process Costing Method

2021 ◽  
Vol 31 (5) ◽  
pp. 1289
Author(s):  
Popon Rabia Adawia ◽  
Aprilia Puspasari
Keyword(s):  
Production Cost ◽  
Raw Materials ◽  
Production Costs ◽  
Selling Price ◽  
Labor Costs ◽  
Calculation Results ◽  
Process Cost ◽  
Calculation System ◽  
The Cost ◽  
Descriptive Method

This study aims to help SMEs for shoe products in calculating the Cost of Goods Manufacture (COGM) appropriately using the process costing method as a strategy to determine the selling price of competitive shoes so that it is hoped that the business can continue. The research was conducted at one of the MSME Shoe Products, namely the Amira Collection, which is located in East Karawang. The comparative descriptive method is used to describe the production costs that occur in the production process including costs to buy raw materials, auxiliary materials, labor costs and factory overhead costs. The COGM calculation results show the variance (difference) between the company's COGM calculation system and the COGM calculation system using the process costing method where the company's COGM calculation results are lower. Keywords: Process Cost; Cost Of Goods Sold; Production Cost; Selling Price.

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