scholarly journals Feasibility Study of Biogas Production from Miscanthus Biomass in the Tavoush Region

2021 ◽  
pp. 138-143
Author(s):  
D. Z. Markosyan
Keyword(s):  
Sensitivity Analysis ◽  
Natural Gas ◽  
Feasibility Study ◽  
Biogas Production ◽  
Economic Feasibility ◽  
Discount Rates ◽  
Miscanthus Giganteus ◽  
Cheap Alternative ◽  
The Cost

This study aims to assess the economic feasibility of biogas production from the biomass of Miscanthus Giganteus. Three scenarios have been applied based on its productivity and stand’s life. The breakeven prices per tonne for each scenario were calculated and sensitivity analysis was conducted with respect to various factors. Afterward, the cost per gigajoule was calculated and compared to Natural Gas. The cost per gigajoule of Miscanthus ranges from 920-3033 AMD based on the sensitivity results, hence it can be quite cheap alternative depending on the yield, discount rates and rhizome costs.

scholarly journals SENSITIVITAS KELAYAKAN EKONOMI PADA RENCANA PEMBANGUNAN JEMBATAN LAWE ALAS – PEDESI KABUPATEN ACEH TENGGARA PROVINSI ACEH

Teras Jurnal ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 140
Author(s):  
M. Isya ◽  
Sugiarto Sugiarto ◽  
Jetno Harja
Keyword(s):  
Sensitivity Analysis ◽  
Feasibility Study ◽  
Construction Project ◽  
Economic Feasibility ◽  
Feasibility Analysis ◽  
Costs And Benefits ◽  
Bridge Construction ◽  
Aceh Province ◽  
The Cost ◽  
Level Of Risk

<p align="center"><strong>Abstrak</strong></p><p><strong> </strong></p><p class="11daftarpustaka">Elemen-elemen dasar biaya dan  manfaat dalam analisis kelayakan proyek jarang diwakili oleh hanya satu nilai yang benar dan pasti. Dengan demikian hasil studi kelayakan ekonomi proyek juga bukanlah kepastian. Untuk itu perlu dilihat sejauh mana perubahan elemen biaya dan manfaat terhadap kelayakan ekonomi proyek. Cara sederhana untuk melakukan hal tersebut adalah dengan melakukan analisis sensitivitas. Pada analisis sensitivitas kelayakan ekonomi ini dilihat sejauh mana perubahan tingkat kelayakan jika terjadi perubahan pada komponen biaya dan manfaat. Analisis sensitivitas pada kajian ini dilakukan pada rencana proyek pembangunan jembatan Lawe Alas – Pedesi di Kabupaten Aceh Tenggara Provinsi Aceh. Skenario sensitivitas yang dilakukan di sini mencoba melihat pengaruh pertambahan biaya dan berkurangnya manfaat terhadap kelayakan ekonomi proyek pembangunan jembatan tersebut. Dengan demikian tingkat resiko kelayakan ekonomi dapat diketahui.</p><p class="11daftarpustaka"> </p><p class="11daftarpustaka">Kata kunci: <em>Study kelayakan, kelayakan ekonomi, analisis sensitivitas</em><em></em></p><p><em> </em></p><p><em> </em></p><p><em> </em></p><p align="center"><strong>Abstract</strong></p><p class="11daftarpustaka"> </p><p class="11daftarpustaka">The basic elements of costs and benefits in a project feasibility analysis are not  represented by a single one as a definite value. Consequently, the results of the project's economic feasibility study are also uncertain. Based on that reason, it is necessary to see the influence of variability of the elements of costs and benefits to the economic feasibility of the project. A simple way to determine the feasibility variability  is by doing sensitivity analysis scenario. In this feasibility sensitivity analysis, the variability of costs and benefitsare done by increasing the cost and lowering the benefit. The sensitivity analysis in this study was applied to the new  Lawe Alas - Pedesi bridge construction project in Aceh Tenggara District Aceh Province. The sensitivity scenario done in order to determined the effect of increased costs and reduced benefits on the economic feasibility. Thus the level of risk of economic feasibility can be also determined.</p><p class="11daftarpustaka"> </p><p class="11daftarpustaka">Keywords: feasibility study, economic feasibility, sensitivity analysis<em></em></p>

Economic Feasibility of Transporting Natural Gas Hydrates in Slurry Pipelines

2014 ◽  
Author(s):  
K. K. Botros ◽  
S. Hall
Keyword(s):  
Natural Gas ◽  
Gas Hydrates ◽  
Economic Feasibility ◽  
Carrier Fluid ◽  
Central Processing ◽  
Natural Gas Pipeline ◽  
Natural Gas Hydrates ◽  
Unit Energy ◽  
Water Lattice ◽  
The Cost

Natural Gas Hydrates are cage-like structures that are composed of natural gas (methane, ethane, etc.) molecules contained or entrapped within a water lattice. The hydrate structure contains tightly packed gas in ratios of over 160 to 1. Thus, there is a huge conceived upside to transporting the gas in this mode efficiency-wise if one could transport hydrates to a central processing facility where the hydrate would be processed to meet natural gas pipeline grid specifications. The question is: can they be transported in slurry form with water or oil as a carrier fluid, and what are the pros and cons of such mode of transportation. This paper attempts to answer these questions, and presents a feasibility analysis of three pipeline transportation scenarios to transport equivalent of 116 MMSCFD of natural gas over 500 km distance. It was found that for transportation of natural gas in the form of hydrates to be economically feasible, it has to be combined with transportation of crude oil as a carrying fluid rather than water, so that the cost of transportation per unit energy of the combined hydrates/oil slurry mixture is shared between the two energy commodities. This will result in even a lower cost below that of conventional transportation of natural gas in gaseous (vapour) form.

Turning C1-gases to Isobutanol Towards a Great Environmental and Economic Sustainability via Innovative Biological Routes: Two Birds With One Stone

2021 ◽  
Author(s):  
Bobo Liang ◽  
Rongzhan Fu ◽  
Yingqun Ma ◽  
Lizhen Hu ◽  
Qiang Fei ◽  
...  
Keyword(s):  
Sensitivity Analysis ◽  
Natural Gas ◽  
Operating Cost ◽  
Economic Feasibility ◽  
Utilization Rate ◽  
Multiple Point ◽  
Energy Calculation ◽  
Selling Price ◽  
Human Beings ◽  
Cell Factories

Abstract BackgroundThe dramatic increase in emissions of greenhouse gases (GHGs) has led to an irreversible effect on the ecosystem, which in turn caused significant harm to human beings and other species. Exploring innovative and effective approaches to neutralizing GHGs is urgently needed. Considering the advancement of synthetic biology and the bioconversion process, C1-utilizing cell factories (CUCFs) have been modified to be able to effectively convert C1-gases includes biogas, natural gas, and carbon dioxide (CO2) into chemicals or fuels via biological routes, which greatly facilitates the inedible carbon sources used in biomanufacturing, increases the potential value of GHGs and meanwhile reduces the GHG emissions. Process design and resultsEven though the current experimental results are satisfactory in lab-scale research, the evaluation of economic feasibility as well as applications of CUCFs in industrial-scale still need to be analyzed. This study designed three scenarios of CUCFs-based conversion of biogas, natural gas, and CO2 into isobutanol, the detailed techno-economic analyses of these scenarios were conducted with the comparisons of capital cost, operating cost, and minimum isobutanol selling price (MISP). Results revealed that direct bio-conversion of CO2 by CUCFs into isobutanol exhibited the best economic performance with a MISP of $1.38/kg isobutanol. The single sensitivity analysis showed that the gas utilization rate, flow rate, and CO2 cost are the three most significant economic-driving forces on MISP of CO2-derived biological isobutanol. Multiple-point sensitivity analysis presented that the MISP for the long-term case can be as low as 0.99 $/kg with using ideal targets. ConclusionsOur findings provide a comprehensive assessment of bio-conversion of C1-gases via CUCFs to isobutanol in terms of the bioprocess design, mass/energy calculation, capital investment, operating expense, sensitivity analysis, and environmental impact. It is expected that this study may lead to the paradigm shift in isobutanol synthesis with C1-gases as substrates.

scholarly journals THE ECONOMICS OF BIOGAS PRODUCTION

2013 ◽  
Vol 14 (2) ◽  
Author(s):  
Kh. S. Karimov ◽  
M. Abid ◽  
S. I. Islomov ◽  
N. H. Karimova ◽  
M. W. Al-Grafi
Keyword(s):  
Life Cycle ◽  
Natural Gas ◽  
Cost Analysis ◽  
Life Cycle Cost ◽  
Biogas Production ◽  
Life Cycle Cost Analysis ◽  
The Cost

ABSTRACT: In this paper life-cycle cost analysis of three biogas digesters is presented. Results show that the cost of biogas depends on the construction of digesters, sizes of methane tank and possibility of heating of the slurry. Biogas and natural gas costs calaculated are observed and found to be comparable. It is recommended that the biogas digesters can be constructed and installed, in principle, for every family and there is no need to built long gas pipe lines. ABSTRAK: Kertaskerja ini membentangkan analisis kos kitar hayat tiga pencerna biogas. Keputusan menunjukkan kos biogas bergantung kepada pembinaan pencerna, saiz tangki metana dan kemungkinan pemanasan buburan. Pengiraan kos biogas dan gas asli diambil kira dan ianya didapati setanding. Adalah disarankan pencerna biogas boleh dibina dan dipasang secara teorinya, bagi setiap keluarga tanpa memerlukan pembinaan paip gas yang panjang.

Economic Feasibility Study of DES/CCHP in Different Regions of China

2012 ◽  
Vol 616-618 ◽  
pp. 1374-1376 ◽  
Author(s):  
William Yang
Keyword(s):  
Natural Gas ◽  
Economic Feasibility ◽  
Electricity Price ◽  
Price Ratio ◽  
Comprehensive Index ◽  
Key Factor ◽  
The Cost ◽  
Northwest Region ◽  
Operation Cost ◽  
Determinant Factor

Recently China issued a series of policies that benefit the development of DES/CCHP. We are confident that DES/CCHP fueled by natural gas will boom in recent decades. Operation cost is the key factor that decides if a project will succeed. This paper analyzed three factors that influence the cost of DES/CCHP project: annual running time; comprehensive energy efficiency and the price of natural gas and electricity, reaching the conclusion that the price of natural gas and electricity is the determinant factor to a DES/CCHP project and gas-electricity price ratio is a comprehensive index that indicates the economic expectation of a DES/CCHP project. Considering that no survey has been conducted about the gas and electricity price distributions in China, we collected price data of natural gas and electricity, and got the conclusion that DES/CCHP is more competitive in Northwest region of China, especially Xinjiang, Ningxia.

FEASIBILITY STUDY OF ANIMAL WASTE BIOGAS PRODUCTION

2020 ◽  
Author(s):  
Juan Galvarino Cerda Balcazar ◽  
Cristiano Maidana ◽  
charles rech ◽  
Mariana Coronas ◽  
Maurício Zanon Antunes
Keyword(s):  
Feasibility Study ◽  
Biogas Production ◽  
Animal Waste

Economic feasibility of restoration of degraded and neglected lands

2020 ◽  
pp. 79-90
Author(s):  
Anastasiya V. Mironova ◽  
Igor’ V. Liskin ◽  
Irina I. Afonina
Keyword(s):  
Soil Layer ◽  
Black Soil ◽  
Economic Feasibility ◽  
Research Purpose ◽  
Necessary Condition ◽  
Labor Costs ◽  
Human Needs ◽  
Fallow Lands ◽  
The Cost ◽  
Regions Of Russia

Neglect of soils leads to their degradation, worsens useful properties, and reduces fertility and productivity. (Research purpose) The research purpose is in conducting a comparative analysis of technologies for treating degraded soils, taking into account the economic feasibility of their restoration in non-black-soil regions of Russia. (Materials and methods) The article shows the main technological scheme of restoration of degraded soils. Authors have identified the main groups of land that are located in non-black-soil regions of Russia. (Results and discussion) The article presents the need for equipment, economic and labor costs for the restoration of each type of land in the non-black-soil regions of Russia. Authors took into account that the salary of machine operators depends on the time of direct execution of the task. It was found that the restoration of virgin and fallow lands was the most preferable from the economic, energy-saving and environmental points of view. The article shows that the restoration of pasture areas exceeds the cost of processing virgin lands, but the number of necessary machine and tractor units is comparable to work on virgin lands. Authors recommend to develop the soils with woody and shrubby vegetation in the first place, starting with land occupied by young plants. It is necessary to take into account the criteria for the fertility of the soil layer. It was found that soils with a small excess of moisture have small cost of its development, while on heavily swampy soils the cost of work on their development is many times higher than the cost of restoring other types of land. (Conclusion) The article shows that the restoration of neglected land is a necessary condition for improving the provision of human needs for food and a number of industrial goods. First of all, it is necessary to develop land that requires minimal investment of economic and labor costs.

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