TY  - THES
T1  - Bio-ethanol production from duckweeds a plant design
A1  - Mora, Joy Marie R.
A1  - Casero, Jessica J.
A2  - Mariano, Victor B.
A2  - Baynosa, Marjorie L.
LA  - English
UL  - https://ds.mainlib.upd.edu.ph/Record/UP-99796217612423463
AB  - The main product of the plant design report is bioethanol from the enzymatic hydrolysis of duckweeds. The 200 proof bioethanol is to be used primarily as a gasoline additive.They key process involved in this bioethanol production are enzymatic hydrolysis of starch, fermentation of reducing sugar and dehydration of ethanol. The enzymatic hydrolysis is chosen above any other types of hydrolysis because of its efficiency and selectivity in hydrolyzing different types of substrates. Fermentation of the reducing sugar will be rendered by a bacterium (Saccharomyces cerevisiae) to produce bioethanol as the main product and carbon dioxide as the by-product. The dehydration of ethanol will make use of a distillation pervaporation system.Ethanol has a wide range of applications, from beverages to fuels.It is an important industrial ingredient and has widespread use as a base chemical for other organic compounds. For this report, the 200 proof bioethanol is to be used mainly as a gasoline additive as per mandated by the Biofuels Act of 2006.The primary raw material in this production is duckweed. Duckweeds are small floating plants on fresh or polluted water. They are good nutrient accumulators and have fire to six times more starch per acre than corn. Duckweed bioaccumulates about 99 percent of the nutrients contained in wastewater and for this reason, they are intended to be grown in Laguna Lake to supply adequately the daily duckweed requirements of the bioethanol production plant.The projected annual capacity of the plant is 10 million liters or about 33 thousand liters daily. This annual production corresponds to about 3 percent of the total annual demand of ethanol in the Philippines as of 2010. The expected annual revenue of the plant is approximately Php 368 million based on a 29-peso per liter price of ethanol and 3.50-peso per kilogram of dried distillers grains. The total product costs correspond to about Php 304 million. This production of ethanol translates to an annual profit of about Php 64 million. Consequently, the return on equity (ROE) is computed to be about 46%. Furthermore, the payback period of the proposed plant is 6 years.
NO  - Submitted in partial fulfillment of the requirements in ChE 142 Chemical Engineering Plant Design.
CN  - LG 993 2010 E62 M67
KW  - Duckweeds.
KW  - Ethanol as fuel.
ER  -