The increase in population accompanied by using LDPE plastic bags in households, traditional markets, and other shopping places impacts increasing LDPE plastic waste. This type of LDPE plastic waste is a problem because it has no sale value then buried in the landfill because of its non-biodegradable nature. So far, the method of decomposing LDPE plastic waste in order to reduce it has been carried out using the incineration method. Gas resulting from combustion in the combustion process causes pollution to the environment and disturbs the health of living things. This problem was solved by using the Waste to Energy (WTE) method, namely pyrolysis. LDPE plastic waste as a feed is converted to fuel oil using 1 unit of pyrolysis equipment by mixing it with a 1% zeolite catalyst at a temperature of 250°C for 6 hours. The volume of the conversion product is measured, and the characteristics of kerosene and diesel fuel are analyzed. The results of the analysis show that the converted fuel oil is a type of kerosene with the amount that can be converted is 1 ml of 1 gram LDPE plastic bag.

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Low Density Poly Ethylene (LPDE) plastic waste has no sale value, buried in a landfill. The plastic itself cannot be broken down by microorganisms in the soil, so that people destroy it through incineration. Incineration plastics produce NOx, COx, SOx, particulates, dioxins, furans, and smoke, which can increase air pollution with acid rain and global warming. The purpose of this research is to solve this plastic waste so that it can be reprocessed into more valuable fuel through the pyrolysis process. The pyrolysis equipment used is a reactor unit made of stainless steel and equipped with an insulator made from rock wall. The primary tar reservoir is between the reactor outlet channel and the condenser inlet. The condenser unit is made of a steel shell and a spiral-shaped copper tube where the condensed product is a secondary tar product. The pyrolysis process produces 3 products, namely solid residue (char), liquid product (tar), and gas products. The number of products analyzed in this study only char and tar in the pyrolysis of LDPE plastic waste was analyzed based on temperature variations, namely 200°C, 250°C, and 300°C. The process in the reactor using natural zeolite catalysts. The results obtained are the highest quantity of char 10.80% and the primary tar 81.19% by processing in a reactor with a temperature of 200°C without the use of a catalyst, the secondary tar product 91.01% by processing in a reactor temperature of 300°C using a catalyst. The highest yield of fuel oil was 94.80%, and the lowest remaining solids residue was 5.2% in the reactor process using a catalyst with a temperature of 300°C for 6 hours.

Domestic waste standard parameters according to PermenLH No. 68 Years. 2016 determined one of them based on the pH, COD and Ammonia values. Most household wastewater has these values, so a purification process is required before the wastewater returns to groundwater. One of the treatments carried out is in the form of ozone technology which can decompose organic and inorganic pollutants and kill microorganisms in the waste. The purpose of this study was to determine the quality of household wastewater resulting from ozone bubble treatment combined with zeolite filters. To support the research, we used the pH, COD and Ammonia measurement methods from the treated samples. The method used is in the form of ozone treatment and zeolite filters in wastewater with a variable length of treatment time. From the research results, it can be seen that the combination of ozone and zeolite filter has an effect on decreasing the concentration of COD and ammonia in wastewater.