Eco-efficiency analysis of waste cooking oil recycling into liquid dish soap using life cycle assessment

Abstract Waste Cooking Oil (WCO) is an oil with a chemical composition containing carcinogenic compounds formed during frying and unsaturated fatty acids. Improper handling of WCO can cause environmental pollution, especially water and soil. However, several studies have provided information that WCO can be recycled into products that are more value-added and have economic potential. Previous research has succeeded in finding the best combination of treatments for making soap from waste cooking oil that meets the standards of SNI 06-2048-1990, namely with a concentration of 22.5% KOH, cooling method and adsorption of activated charcoal and kepok banana peels. This study intends to analyze the environmental impact if WCO is recycled into liquid dish soap. The analysis was carried out using Life Cycle Assessment with the help of simapro software. The recycling process has the most significant impact on indicators of climate change and acidification. The eco-efficiency index is included in the affordable and sustainable categories.

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Life cycle assessment of hydrogenated biodiesel production from waste cooking oil using the catalytic cracking and hydrogenation method

Waste Management ◽

10.1016/j.wasman.2015.01.014 ◽

2015 ◽

Vol 38 ◽

pp. 409-423 ◽

Cited By ~ 15

Author(s):

Junya Yano ◽

Tatsuki Aoki ◽

Kazuo Nakamura ◽

Kazuo Yamada ◽

Shin-ichi Sakai

Keyword(s):

Life Cycle Assessment ◽

Life Cycle ◽

Catalytic Cracking ◽

Waste Cooking Oil ◽

Biodiesel Production ◽

Cooking Oil

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A Life Cycle Assessment of Biofuel Produced From Waste Cooking Oil

Volume 6A: Energy ◽

10.1115/imece2018-86301 ◽

2018 ◽

Author(s):

Sierra Spencer ◽

Malia Scott ◽

Nelson Macken

Keyword(s):

Global Warming ◽

Life Cycle Assessment ◽

Life Cycle ◽

Energy Consumption ◽

Waste Cooking Oil ◽

Oil Refining ◽

Soy Oil ◽

Waste Oil ◽

Cumulative Energy ◽

Cooking Oil

Biofuels have received considerable attention as a more sustainable solution for heating applications. Used vegetable oil, normally considered a waste product, has been suggested as a possible candidate. Herein we perform a life cycle assessment to determine the environmental impact of using waste vegetable oil as a fuel. We present a cradle to fuel model that includes the following unit processes: soybean farming, soy oil refining, the cooking process, cleaning/drying waste oil, preheating the oil in a centralized heating facility and transportation when required. For soybean farming, national historical data for yields, energy required for machinery, fertilizers (nitrogen, phosphorous and potassium), herbicides, pesticides and nitrous oxide production are considered. In soy oil refining, steam production using natural gas and electricity for machinery are considered inputs. Preprocessing, extraction using hexane and post processing are considered. In order to determine a mass balance for the cooking operation, oil carryout and waste oil removal are estimated. During waste oil processing, oil is filtered and water removed. Data from GREET is used to compute global warming potential (GWP) and energy consumption in terms of cumulative energy demand (CED). Mass allocation is applied to the soy meal produced in refining and oil utilized for cooking. Results are discussed with emphasis on improving sustainability. A comparison is made to traditional fuels, e.g., commercial fuel oil and natural gas. The production of WVO as fuel has significantly less global warming potential but higher cumulative energy consumption than traditional fuels. The study should provide useful information on the sustainability of using waste cooking oil as a fuel for heating.

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A Life Cycle Assessment of Biodiesel Fuel Produced From Waste Cooking Oil

10.1115/1.0000322v ◽

2021 ◽

Author(s):

Nelson Macken ◽

Hannah Torres ◽

Kayla Camacho

Keyword(s):

Life Cycle Assessment ◽

Life Cycle ◽

Waste Cooking Oil ◽

Biodiesel Fuel ◽

Cooking Oil

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Eco-efficiency Level of Production Process of Waste Cooking Oil to be Biodiesel with Life Cycle Assessment

E3S Web of Conferences ◽

10.1051/e3sconf/202020210004 ◽

2020 ◽

Vol 202 ◽

pp. 10004

Author(s):

Sri Hartini ◽

Diana Puspitasari ◽

Nabila Roudhatul Aisy ◽

Yusuf Widharto

Keyword(s):

Life Cycle Assessment ◽

Life Cycle ◽

Environmental Impact ◽

Production Process ◽

Oil And Gas ◽

Negative Impact ◽

Water Pressure ◽

Waste Cooking Oil ◽

Biodiesel Production ◽

Cooking Oil

Lack of awareness and knowledge of environmental protection, many people discard cooking oil waste. According to several studies, cooking oil waste can be processed into more valuable products through certain processes that require energy and material. Biodiesel is an example. Beside biodiesel, the production process also produces non-product output. Thus, efforts to utilize cooking oil waste into more valuable products also have a negative impact on the environment. This study aims to measure the environmental impact of biodiesel production from waste cooking oil and compare it if it is discharged to landfill without the recycling process. Measurement of environmental impacts is carried out using a Life Cycle Assessment. Measurement of the environmental impact of biodiesel processing from cooking oil waste is based on a process carried out at a research institute. The measurement results state that the disposal of cooking oil waste has an adverse effect on the ecotoxicity category. Whereas the processing of cooking oil waste into biodiesel has advantages in the categories of climate change, the formation of photochemical oxidants, fine dust, oil and gas depletion, and water pressure indicators. the level of eco efficiency from processing waste cooking oil to biodiesel produces a value close to one which means that the production process is affordable but not yet sustainable.

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