| dc.description.abstract | The increasing growth of the textile and clothing industry causes an increase in waste from the industrial production process. Liquid waste from the textile and clothing industry usually contains dyes. Examples of these generally used dyes are methylene blue. Methylene blue in water can cause negative impacts on the environment such as decreasing DO levels in water as well as negative impacts on human health such as cell necrosis and the formation of Heinz bodies. Therefore, water containing methylene blue needs to be treated before being discharged into the environment. Adsorption is one of many methods that can be used to treat synthetic dye in water. Zeolite is one of the adsorbents commonly used in the adsorption process because it is cheap, has high adsorption capacity, and is abundant in Indonesia. The adsorption capacity of zeolite can also increase when activated physically. One of the zeolites with large deposits in Indonesia is sarulla natural zeolite. Even with the large amount of deposit, sarulla natural zeolite has not been utilized optimally. This research carried out physical activation of sarulla natural zeolite using furnace and microwave with variation in temperature and power and used it as an adsorbent in the methylene blue adsorption process with variation in time and initial concentration of adsorption. Adsorption capacity, adsorption kinetics model, adsorption isotherm model, and total cost will be analyzed in this research. The result of this research shows that sarulla natural zeolite has a high adsorption rate when activated at 400°C using a furnace with removal percentages of 100%. The optimum adsorption time is 10 minutes and the optimum initial concentration is 70 ppm, with the highest adsorption capacity being 19,71 mg/g for. The adsorption kinetics follows a pseudo-first-order model and the adsorption isotherm follows Langmuir isotherm model. The total cost required to activate the zeolite per activation is Rp29,071.47 for the furnace and Rp20.411,31 for the microwave. | en_US |
