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VNUHCM Journal of

Science and Technology Development

An official journal of Viet Nam National University Ho Chi Minh City, Viet Nam since 1997

ISSN: 1859-0128
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PERFORMANCE BEHAVIOUR OF LABSA IN A COMBINED STEEL PICKLING AND DEGREASING SOLUTION

Tru Nhi Nguyen 1, *
Han Mai Tran 1
Truc Tu Thuy Thanh Nguyen 2

  1. Vietnam Institute for Tropical Technology and Environmental Protection
  2. Danang University of Technology
Correspondence to: Tru Nhi Nguyen, Vietnam Institute for Tropical Technology and Environmental Protection. Email: pvphuc@hcmuns.edu.vn.
Volume & Issue: Vol. 14 No. 1 (2011) | Page No.: 45-55 | DOI: 10.32508/stdj.v14i1.1866
Published: 2011-03-30

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Copyright © 2011 by the author(s).

This article is published with open access by Viet Nam National University, Ho Chi Minh City, Viet Nam. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0) which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.

Abstract

Steel degreasing and pickling effect of the acid solutions at various LABSA concentrations and different applied temperatures, combined with ultrasound sonication (35 kHz) has been investigated. From the obtained results, a solution with 10% H2SO4, 3.5 g/l hexamethylenetetramine and 2% LABSA could be used for combined steel degreasing and pickling. The degreasing activity of the solution is considerably increased when sonicating with 35kHz ultrasound, as well as when increasing treatment temperature. It was clarified that beside traditional degreasing effect of an anionic surfactant, LABSA could be used as an acid pickling component. LABSA is also incorporated into the interlayer space of rust to form an ordered organo-rust substances, which influence on the pickling activity of the solution.

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