Evaluation of organic additves in the stabilization of diesel- ethanol-water solutions using turbidimetric titration

Date

3-1986

Degree

Bachelor of Science in Chemistry

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Ernesto J Del Rosario

Abstract

SANCHEZ, DENNIS R. , Institute of Chemistry, College of Arts and Sciences, University of the Philippines at Los Banos, March, 1986. Evaluation of Organic Additives in the Stabilization of Diesel-Ethanol-Water Blends Using Turbidimetric Titration.

Adviser: Dr. Ernesto J. del Rosario

Several organic emulsifiers were evaluated in the determination of water tolerance, maximum concentration of water allowable in the homogeneous system of diesel-ethanol-water blends. The procedure involved the titration of emulsifier-diesel blends by a water-ethanol titrant. The maximum water tolerance of each emulsifier-diesel blend was then obtained from the turbidity threshold point using an empirical mathematical function fitting each titration curve.

Lauryl alcohol, C12/C14 alcohol and 1-pentanol did not - 12' appreciably increase the water tolerance of the diesel fuel. 1-Butanol and PICOL 8150 (a mixture of C12 C14 alcohols) al- lowed the maximal value (approximately 0.24% (v/v)) of water incorporation in the blend.

Polyoxyethylene and sorbitan derivatives were found to reduce the water tolerance of the blend. EMULGEN 905 (a polyoxyethylene) allowed only 0.13% (v/v) water tolerance, compared to the control value of 0.18% (v/v) without any additive.

Some physico-chemical factors affecting emulsification were discussed which caused the low solubilization of water in the diesel blend.

The concept of hydrophile-lipophile balance or HLB was found to be inadequate in explaining the poor emulsifying properties of the additives tested:

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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