تولید بیودیزل با روغن پخت و پز پسماند از دیدگاه ارزیابی چرخه حیات

بیودیزل تولید شده از روغن پخت و پز پسماند، چه یک سوخت زیستی پیشرفته در نظر گرفته شود و چه نشود، با توجه به انتشار گازهای گلخانه ای کمتر، همچنان در دستیابی به انرژی های تجدیدپذیر در حمل و نقل تا سال 2030 نقش خواهد داشت. در حالت کلی کاهش انتشار گازهای گلخانه ای معمولی برای بیودیزل تولید شده از روغن های گیاهی پسماند از 40 تا 62 درصد است در حالی که بیودیزل از روغن پخت و پز پسماند کاهش 88 درصدی را نشان می دهد که همچنان آن را برای دستندرکاران جذاب می کند. هدف از این کار بررسی تئوری و تجربی ویژگی‌های عملکرد یک موتور دیزل تحت به کارگیری سوخت حاوی بیودیزل از نقطه نظر علم ارزیابی چرخه حیات می باشد. در این مطالعه منابع تولید بیودیزل از مرحله جمع آوری و بازیافت تا مرحله تولید بیودیزل، به عنوان سیاهه تولید در نظر گرفته شدند. ارزیابی ها و تحلیل ها توسط روش impact 2002+ در روش ارزیابی چرخه حیات انجام شد. بر اساس نتایج به دست آمده می توان عنوان کرد، در هر دو شاخص میانی و پایانی، تاثیرات زیست محیطی مربوط به تصفیه و بازیافت بیشتر از تاثیرات مربوط به تولید بیودیزل می باشد. می توان نتیجه گرفت، مرحله بازیافت و تصفیه نیاز به بازبینی و اعمال سیاستگزاری های مقتضی برای کاهش تاثیرات زیست محیطی می باشد. تاثیرات مربوط به ردپاهای زیست محیطی در مصرف سوخت، می تواند با سیاستگزاری های مقتضی در راستای حرکت به سمت تولید انرژی و سوخت از منابع تجدیدپذیر و پاک کاهش یابد.

production of biodiesel with waste cooking oil from a life cycle assessment perspective

in the context of growing concerns about environmental issues and sustainable development, policies and other measures to protect the environment are increasingly being developed. this has led to the development of tools and methods to support a variety of organizations in achieving and demonstrating the proper environmental performance of their activities, products and services. environmental management techniques have led to improved understanding of potential impacts associated with activities, products or services, including risk assessment, environmental performance assessment, environmental auditing, environmental impact assessment, environmental labeling and life cycle assessment. risk assessment is a process that is used to describe the risks that can affect the achievement of goals, understand their causes and determine the acceptability or intolerance of a certain level of risk. environmental performance evaluation is a process to facilitate the management decisions of the organization in terms of their environmental aspects, by selecting indicators, collecting and analyzing data, evaluating information based on environmental performance criteria, reporting and communicating, and periodically reviewing and improving this. trends are implemented. cooking oils are commonly used for frying purposes. therefore, oil waste is very high in cooking and can even be problematic from an environmental point of view. improper disposal of cooking oil waste can have significant negative effects on the environment. under current eu law, the use of waste cooking oil for biodiesel production has become important. the share of biofuels produced from waste, waste, non-food cellulosic materials and lignocellulosic materials by 2030 is considered twice as much as other biofuels. biofuels produced from these sources are called advanced biofuels or second generation. biodiesel from waste cooking oil is one of these fuels. the importance of biodiesel derived from waste cooking oils will increase, especially when restrictions on the production of biofuels based on crops are introduced in european law. these regulations have had unexpected interactions. with the start of international imports of edible oil, its price even went beyond the price of edible vegetable oils such as palm oil, and eventually, it increased the cost of production and opened the door to counterfeit products. since there is no real definition of waste cooking oil. today there is no possible way to determine when to use cooking oil or not. therefore, according to the revision of the renewable energy instruction, there are sounds that indicate that cooking oil should be removed from the list of advanced biofuels. biodiesel produced from waste cooking oil, whether or not it is an advanced biofuel, will continue to play a role in achieving renewable energy in transportation by 2030, given the lower greenhouse gas emissions. in general, the reduction in conventional greenhouse gas emissions for biodiesel produced from waste vegetable oils is from 40 to 62%, while biodiesel from waste cooking oils shows a reduction of 88%, which still makes it attractive to practitioners.