Energy sources represent one of the most important inputs of the production process without which the production process can't begin or continue. The process of fossil fuels production has Longley been associated with large amounts of emitted pollutants into the atmosphere starting through the industrial revolution at the beginning of the last century and up to nowadays, causing high levels of pollution that have threatened the human presence on earth. Fossil fuels has three main problems: the first is polluting the environment and the second is that it is steadily depleting and the third is that it has a decreasing supply function, contrary to its increasing demand, which has led to a steady increase in its international prices. It is a must and not a luxury. These made the world to produce the biogas and its secondary product "the biogas compost" which environmentally and economically compatible compared to other alternatives offered in the global market.  In Egypt, the problem of fuel is more acute, especially in the desert provinces, where the challenges of shortage of supply of LPGs combine with increasing demand due to rapid population increase with spatial spacing between production  and distribution areas accompanied by transportation, storage and handling risks, In a short period of time, all of which are a constant pressure on the balance of the local market for fuel, especially gas cylinders (LPG). Increasing carbon emissions from different sectors especially transport and agriculture (with regard to the accumulation and unsustainable handling of agricultural wastes) and the industrial sector pose significant challenges to environmental safety in Egypt. Which makes these factors a pressure pathway for the state to encourage the spread of the use of biogas technology in the agricultural sector, especially as it save the foreign currency through the provision of a complete decomposed, free of parasites, and low cost fertilizer in addition to it doesn't cause environmental pollution compared to other high-cost organic fertilizers and extremely expensive and environmentally pollutant chemical ones. The study found that the size of the most common fermenter in the category of small-size fermenters is 6 m 3 because it has a high economic return.  The research concluded that in biogas production units studied in the newly reclaimed areas of three Governorates (South Sinai, Fayoum, Assiut), net profit reached the end of life of the project, estimated at about 15 years, is about 42642 LE. The average annual profit per unit (4240 LE), IRR (15%), and the total cost recovery period of the unit are estimated at (7 years).   A sensitivity analysis of 10% found that    First    Increase costs by 10%     Net profit of LE 40454.  The average annual profit is LE 3424.  Internal rate of return (IRR) 15%  The total cost recovery period for the unit is 7 years.    Second    Revenues decrease by 10%     Net profit of LE 3622.  The average annual profit is LE 3075.  Internal rate of return (IRR) 15%   The total cost recovery period for the unit is 7 years   Third    Increase costs by 10% and decrease revenue by 10% together     Net profit of LE 34014.  The average annual profit is 3000 pounds.  Internal rate of return (IRR) 15%  The total cost recovery period for the unit is 7 years    The study recommends the use of 6 m3 biogas fermenters in the agriculture sector for heating, lighting and cooking purposes especially in newly reclaimed lands to provide energy and organic fertilizers to ensure the sustainability of the environmental resources in these virgin areas and the success of production processes economically.

It is one of the most serious problems facing Egyptian agriculture, which is working to eat agricultural area Where farmland represents one of the most important agricultural economic resources in the provision of food, where is the problem of constant encroachment on farmland and converted from agricultural use to other uses of non-farm as the total agricultural land has been encroached upon construction during the period Area (1983 - 2010) about 64 Thousand acres in addition to the encroachment on about 38.46 thousand acres since the wealth of January 25, 2011 until 28/9/2014, which led to a decline in the average per capita agricultural land in Egypt from about 0.133 acres / population in 1983 to about 0.112 acres / people in 2011, was where the study problem in increasing encroachment on the land Agricultural Giza especially governorate Doanh the post-January 25 Revolution 2010 study was conducted to identify the effects of Aguetsadahoalajtmaih leveling farmland in Giza Governorate 2017 season. Where the characteristics and motives of the establishment of private projects and land has been identified, and this motivation strengthens the doctrine of the importance of infringement by seeing others from projects that are based on their negative impact on the neighboring lands of the project, especially if the success of the project and the desire to imitate this behavior or create a new project The previous project, whether through raw materials or taking advantage of the product of the former resident on the lands beyond it, which sees the oppressor as an incentive for the tradition and Altadam on the infringement of the other and waiting for what happened to him before the establishment of a plant on the land beyond it and did not see the behavior of Alchk Meh it packs serious and immediate accountability and behavior, whether or removal or punishment Salehbh both. It was concluded that the owners of the first Mivkron project is the amount of income obtained by the search for the compensation of what was obtained before the establishment of the project and shows the table what the project owner gets from the agricultural land before the establishment of the project and the income obtained after the establishment of the project and depends on the difference in income, The project, where it was found that the owner of a poultry farm was obtained on average on 94.4 pounds / month as the value of rent or equivalent percentage of the crops produced from the area on which the project is established (poultry farm, which is 5.28 i), while the increase rose to 12.3 thousand pounds, increase of about 13.56% than once The average monthly income before the establishment of the stadium amounted to about 193 pounds / month, which rose about 8 thousand pounds / month, an increase of about 4145% of what was obtained of the agricultural land, while the income of the owner of the wedding hall before the establishment of about 113.3 pounds / month of agricultural land, while the rise to about 4 thousand pounds from the wedding hall, an increase of 3530% of what was obtained from the ground. Although the satisfaction of the projects on the land above it is much higher than the return of agricultural land, this high return of projects does not correspond to the degree of food deprivation for future generations as a result of conversion of agricultural land to special projects in all wars and the occurrence of fodder or influence the political decision to import food and provide of society as a whole.