@thesis{thesis,
		author={Hakim  Mahmud},
		title ={Biosolvent Dari Pemanfaatan Limbah Kulit Nanas Dan Penambahan Additive Xylene Digunakan Sebagai Wax Inhibitor},
		year={2021},
		url={https://repository.uir.ac.id/9484/},
		abstract={Wax tends to crystallize at low temperature conditions, which makes it difficult for crude oil to move. So that this condition will affect the transportation process in the flow line. Solvent is one technique used to treat wax. The solvent used as a wax inhibitor is bioethanol. Bioethanol comes from pineapple skin waste containing cellulose and hemicellulose which are the main sources of bioethanol production. The process of pineapple skin waste into bioethanol products is carried out by pretreatment, hydrolysis, fermentation and distillation processes. The hydrolysis process is carried out using hydrochloric acid (HCL) with variations in acid concentration and temperature variations. The effect of the variation in acid concentration used was that reducing sugars continued to increase. Meanwhile, at temperature variations, the optimum point of reducing sugar is obtained at a temperature of 100°C of 24°Brix. The fermentation yields the ethanol content which continues to increase with the addition of urea. The highest ethanol content was produced using Saccharomyces as much as 0.015 gr/mL + 5 gr urea which is 18% bioethanol content calculated using an alcohol meter. Meanwhile, with GCMS testing, the bioethanol content was obtained by 16.45%. The results of using bioethanol with a level of 16.45% can reduce the pour point by 3 ° C at a concentration of 75%. Meanwhile, the use of xylene additive obtained the optimum conditions in reducing the pour point of 11°C at a concentration of 75%. In addition, bioethanol and xylene additives are also mixed. Mixing with a ratio of bioethanol: xylene ratio is 1: 2 to get the best concentration in reducing the pour point by 6°C at a volume ratio of 75%. So it can be concluded that the use of bioethanol and mixing of bioethanol with xylene additives has the good potential to reduce the pour point.}
		}