Hydrothermal Acid and Enzyme of Indonesian Macro-algae (Ulva lactuca) for Ethanol Production

Mahmudi, Ali (2015) Hydrothermal Acid and Enzyme of Indonesian Macro-algae (Ulva lactuca) for Ethanol Production. International Journal of ChemTech Research, 8 (10). pp. 512-518. ISSN 0974-4290 (Submitted)

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Abstract

The world's global concerns about the availability of energy sourced from nonrenewable materials will create another predicament if it does not immediately find a way out. As a solution, a renewable energy source derived from green algae Ulva lactuca can put into consideration, as its carbohydrate content allows it to be converted into bioethanol. This algae is widely available along the South Coast of Java Sea that has not been extensively used. The method used is to perform a pre-treatment processes (acid hydrolysis and enzyme hydrolysis), microbial fermentation using yeast or Saccharomyces and distillation process at a temperature slightly above the boiling temperature of ethanol. The study was conducted with variations of Sulphuric Acid concentration, the amount of enzymes and the types of enzymes that are used during the hydrolysis process. The results indicate that the highest levels of ethanol in the amount of 7.706273% V/V is by using sulphuric acid of 2% with 10 drops of beta-amylase enzyme. Although the level of Ethanol produced is not high, but there is a positive possibility to expand the bioethanol conversion technologies using the macro-algae Ulva lactuca

Item Type: Article
Uncontrolled Keywords: bioethanol, acid and enzyme hydrolysis, Ulva lactuca
Subjects: Engineering > Informatics Engineering
Divisions: Fakultas Teknologi Industri > Teknik Informatika S1
Depositing User: Mrs Retno Wulan Sari
Date Deposited: 24 Aug 2023 03:48
Last Modified: 24 Aug 2023 03:48
URI: http://eprints.itn.ac.id/id/eprint/12679

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