scholarly journals Peningkatan Perekonomian Kelompok Ukm Kue Basah Desa Sambirejo Melalui Pemanfataan Energi Alternatif

2018 ◽  
Vol 1 (1) ◽  
pp. 17
Author(s):  
Margianto Margianto ◽  
Sugiono Sugiono

Sambirejo village have interested potensial among other villages around. The potensial is there are some group of wet cake small businessman. There are 14 small businessman that have many worker among their family.Many years ago the small businessman used LPG (Liquid Petrolium Gas) or woods as source of fire energy to run their working. So that there some negative effect like dangerous of blowing LPG or the emptiness of wood supply. Also they used manual tools to process the wet cake that make unefficently bussiness.The small businessman have many cows and garden that can be used to make biogas installation with use cows manure.Through this campus activity, the businessman at last have biogas installation as fire alternative energy and mechanical tools (mixer cake ) to process their working.Output of the program are, tne small businessman have ability to efficiently and faster the production process

Author(s):  
Vahid Nejati ◽  
Jalil Roknizadeh

In 2012, approximately 3700 million tons of cement is produced all around the world. Iran by producing 65 million tons cement in 2012 is ranked in fifth. Production process of the cement requires a huge amount of energy and it is approximated that 25% to 35% (based on efficiency of factories) of total costs in cement industries belong to required heat energy in production process. To produce 65 million tons of cement in Iran, about 56×1012 kcal of heat energy is consumed. Thus applying the new and cheep sources of energy could play an important role in reducing energy costs. On the other hand one of the important environmental problems is the absolutely huge amount of used tire of vehicles and the Municipal Solid Waste (MSW) and they should be appropriately destroyed. As a result they can easily change to Tire-Derived Fuel (TDF) and Refuse-Derived Fuel (RDF) to provide the required heat energy in cement industries. In this study the available amount of RDF and TDF for cement industry are estimated. The evaluation results show that in Iran TDF can only provide about 1.77 percent of this need. Also using RDF, whose production has large potential in Iran, can cover about 27.96 percent. It is concluded that reduction of 29.73 percent of fossil fuel consumption in cement industries stem from applying both of these fuels simultaneously, leading to gas saving about two billion cubic meters per year. It is determined that the export value of such volume of gas is equal to one billion and ten million dollars with current gas price. However there is no tendency for using the alternative energy by cement factories because of low price of oil and natural gas inside Iran than global rate. In fact at the moment applying RDF and TDF doesn’t have any benefit for cement factories. The purpose of this paper is to evaluate the effects of using alternative fuels in the cement industry in Iran and to show that for persuading and encouraging the cement factories to apply RDF and TDF, instead of increasing the energy prices, the revenue from fuel savings in global rate should be paid directly to cement industries.


Author(s):  
F Orecchini ◽  
D Sabatini

To change the negative effect of traffic increase and to diminish noxious pollutant emission and environmentally harmful consequences of the car's life cycle, innovative tools and radically changed approaches are needed. The present proposal of assessing the car and its environmentally related technological and functional factors as part of the entire mobility production process shows the applicability of ISO 14001 standards to the entire car process and could be a concrete aid to reaching the current European and international objectives and strongly encouraging environmentally friendly car design, manufacturing and lifestyles. The car influences the environment during every stage of its life cycle. This paper analyses and demonstrates the real possibility of certifying, through ISO 14001 standards, instead of an industrial site or organization, a car process. The car process is the part of the mobility production process implemented in car use. Environmental management systems (EMSs) have been developed to improve the environmental performance of organizations towards the diffusion of sustainability in industrial production. The ISO 14000 series of international standards are the most important reference for eco-management of any type of organization. The two target groups involved in the car process environmental certification procedures set are manufacturers/suppliers on the one hand, interested in environmentally compatible new markets and products, and clients/users on the other hand, interested in testing benefits and problems of the EMS set-up and general environmental sustainability behaviours. The car model analysed for the case study application is the Toyota Prius, from the environmental point of view one of the best on the market, precursor model of the next-generation electric hybrid vehicles.


2017 ◽  
Vol 11 (2) ◽  
pp. 137
Author(s):  
Prima Dwianto

The Indonesian government has radically altered the structure of the national sugar industry by issuing Presidential Instruction no 9/1975 on the People’s Sugarcane Intensification Program (TRI) in order to increase sugar productivity. The dependence on the production process to sugar factories was replaced with the production process of the farmers from planting to harvesting. This research intends to document the socio-economic effects of the TRI program on farmers within the Mojo Sugar Factory work area in Sragen, Central Java, between 1975 until 1998. The result of the research has shown that farmers south of the Bengawan Solo river were resistant to the TRI program in favor of more lucrative rice farming. These farmers conducted social protests such as sugarcane field burnings. Farmers that lived north of the river supported the TRI program because planting sugarcane on non-irrigated fields was more profitable than planting other crops. This research shows that the TRI program has positively benefited to some farmers, a conclusion that is not shared by previous researches that point to only negative effect of the program.


2021 ◽  
Vol 273 ◽  
pp. 01015
Author(s):  
Nikolai Vasetsky ◽  
Alexander Paramonov ◽  
Oksana Tseluyko ◽  
Andrey Fedyushkin ◽  
Sergey Pasko

The article shows that the productivity of spring wheat is determined by the total effect of a set of conditions, each of which affects the amount of products obtained. As a result of the research, it was found that the yield of spring wheat directly depends on the hydrothermal conditions of the growing season. The key factor affecting the increase in the productivity of crops when using mineral fertilizers is the amount of precipitation during the growing season. The use of mineral fertilizers can significantly increase the yield of spring wheat, reducing the negative effect of the hydrothermal conditions of the growing season. So, when N60P30K60 was introduced, the yield increase in different climatic conditions of the research years was 9, 3 … 92, 8%. It was also found that the reproductive function of durum spring wheat is characterized by the fact that the total number of caryopses of a shoot spike and their total weight are in close proportional dependence on the value of its vegetative mass. In this case, the value of the grain-straw ratio is a consequence of the proportional dependence of the reproductive elements of the shoot (acceptors) of wheat on the size of its vegetative (donors) organs.


Buletin Loupe ◽  
2020 ◽  
Vol 16 (01) ◽  
pp. 60-67
Author(s):  
Edy Wibowo Kurniawan

The Indonesian government is trying to equalize development including the energy sector. The government launched the use of alternative energy starting in 2008 with a blueprint for searching and utilizing new renewable energy sources in Indonesia through biofuels, one of the alternative energy developed is bioethanol. The research objective is the optimization of the SHF method bioethanol production process from palm fruit fiber waste. The experimental design uses central composite design with variable H2SO4 concentration and fermentation time. The first stage in the study was by saccharifying the palm oil fiber waste by the hydrolysis method using H2SO4 (concentrations of 1 M, 2 M, and 3 M). Then the next stage is fermentation process (fermentation time is 1 day, 2 days, 3 days, 4 days and 5 days). Sugar content analysis was carried out in the fermen solution and analysis of bioethanol levels in each running experiment. Then the optimization is done with the response surface method (RSM). Based on the research, the optimum condition of the bioethanol production process is H2SO4 concentration of 2.76 M with a fermentation time of 4.64 days which will produce bioethanol levels of 28.6027 g/L.


2014 ◽  
Vol 1025-1026 ◽  
pp. 37-41
Author(s):  
Adam Skrobak ◽  
Michal Stanek ◽  
David Manas ◽  
Martin Ovsik ◽  
Vojtech Senkerik ◽  
...  

The article deals with the influence of production technology on mechanical properties of rubber testing samples. In practice, rubber testing samples are cut out from a compression molded sheet, also in case of testing of rubber compounds appointed for injection molding. However, the different way of the preparation of testing samples and the production itself may have a negative effect on the mechanical properties of the final product. Thus the article judges, to what extent the mechanical properties (tensile strength, extension, tear strength and microhardness) of testing samples from selected rubber materials are influenced by injection molding, and evaluates the possible divergence.


2015 ◽  
Vol 669 ◽  
pp. 467-476
Author(s):  
Ján Turis ◽  
Marián Kučera

Unplanned outage of extensive transport and handling equipment used between main stages of the production process has magnified negative effect on logistics of the entire company. Article introduces information about examining and assessing the level of wear of working oil charge in an extensive hydraulic system of device used for the transport and processing of wood raw material between the woodworking line aggregates. The decisive role in preventing the listed unsolicited situation has respecting the early tribodiagnostic signal through the analytical ferrography. Completion of this particle analysis by information complex from other appropriately selected diagnostic methodologies will be essential for the trend analysis of wear regime of system oil charge creation. The analysis is also a key predictive information about state of degradation of internal contact surfaces of the examined machinery.


2018 ◽  
Vol 192 ◽  
pp. 03018
Author(s):  
Teerapat Laiwatthanaphaisarn ◽  
Amata Anantpinijwatna

Current world energy consumption is likely to increase over time. This is due to the growth of industry and transportation. The most important and most used energy sources are crude oil and natural gas. The consumption of energy is increasing continuously due to the economic expansion of the world fleet. At present, prices of primary energy sources such as oil and natural gas tend to increase. In addition, oil and gas are limited and likely to run out in the future. Currently, research and research on alternative energy is ongoing. To find the best alternative energy to replace in the future. Dimethyl ether is a substance that can be used as a substitute for liquefied petroleum gas (LPG) because of its similar physical properties. Most of them are used as fuel in vehicles. In addition, dimethyl ether is easier to liquefy than liquefied petroleum gas, giving advantages in terms of storage and transport, and a higher cetane value that can be used in the vehicle. Dimethyl ether is a substance that will burn completely. Dimethyl ether production has a wide variety of options. If the best option is difficult to analyse because of the complexity of the solution. Superstructure analysis will help to find alternatives for the production of dimethyl ether. Superstructure will identify the most economical alternative. The mathematical model is applied to the existing production process and new alternatives. In this work, the alternatives to produce dimethyl ether are displayed and the optimum alternative are chosen.


2012 ◽  
Vol 06 ◽  
pp. 709-714
Author(s):  
SEUNG-HUN CHOI ◽  
YOUNG-TAIG OH

Biodiesel as alternative energy source of the traditional petroleum fuels has increased interest, because environmental pollution based exhaust emissions from vehicle became serious. The advantage of biodiesel produced from esterification of vegetable and animal oils can be used without the modification of existing diesel engine, but glycerin is generated by production process. In this study, the usability of non-esterification biodiesel as an alternative fuel was investigated in an indirect injection diesel engine. The non-esterification biodiesel has not generated glycerin in esterification process and reduced the 20 percent of cost because it has not used methanol in the production process. Experiments were conducted by using the 5, 10 and 20 percentage of biodiesel and 4 and 8 percentage of biodiesel with 1 and 2 percentage of WDP in baseline diesel fuel. The smoke emission of biodiesel was reduced in comparison with diesel fuel, but power, torque and brake specific energy consumption was similar to diesel fuel.


2011 ◽  
Vol 3 (3) ◽  
pp. 72-76
Author(s):  
Jonas Abromas ◽  
Diana Baravykaitė

At the moment the most important question is climate change repression and the provision of energy in the world. The rate of the alternative energetic use has strongly increased in the last decade of 20th century. In 23rd of 2009 the European Parliament and the Council accepted the directive 2009/28/EB for encouragement to use renewing resource energy. According to this directive, Lithuania has to warrant that renewing resource energy part in the final general energy consumption would be not less than 23% in 2020. The perspective energy resource types for making the electric energy are water and wind energy in Lithuania. The inventory of the alternative energy somehow affects the environment. Visually the wind, water and the sun energetic objects from all others alternative energetic objects mostly affects the environment. In this article there are analyzed Western Lithuania present and future alternative energetic objects, their possible visual effect on environment and implements to reduce the negative effect. There were used methods of photo-fixation, visual assessment of objects, measurement, distribution of objects and comparative analysis.


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