Waste Materials for Sustainable Corrosion Protection of Metals

A special issue of Metals (ISSN 2075-4701).

Deadline for manuscript submissions: closed (31 January 2024) | Viewed by 1887

Special Issue Editors


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Guest Editor
Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, Staatsartillerie Rd, Philip Nel Park, Pretoria 0183, South Africa
Interests: advanced engineering materials; corrosion engineering; physical metallurgy; nanotechnology; electrochemistry; waste management
Special Issues, Collections and Topics in MDPI journals
Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, Staatsartillerie Rd, Philip Nel Park, Pretoria 0183, South Africa
Interests: corrosion engineering; physical metallurgy; electrochemistry; waste management

Special Issue Information

Dear Colleagues,

Corrosion has a substantial economic, environmental, and adverse sustainability impact on almost all facets of the world's infrastructure including bridges, power facilities, chemical industries, integrated circuits, desalination, oil and gas pipelines, etc. Although corrosion is inevitable, it can be managed. Complete elimination would not be practicable or attainable, but prevention would. Preventive measures can reduce corrosion costs by 15 to 35%. Corrosion prevention techniques may include the use of corrosion inhibitors, corrosion-resistant alloys, anti-corrosion coatings, anodic passivation, cathodic protection, proper design, etc. Corrosion protection by the use of inhibitors and anti-corrosion coatings is attractive because it is one of the most practical, efficient, and cost-effective techniques. The world is moving towards achieving Vision 2030, which aims to phase out toxic chemicals, and corrosion scientists are therefore intensifying research activity on green materials. Research activity has now been focused on natural materials due to their low cost, availability, biodegradability, and eco-friendliness. Integrated utilization of waste is a progressive direction of resource conservation. Within this direction is the idea of introducing into production not only low-waste but also zero-waste technology. This Special Issue intends to disseminate the most recent research on sustainable waste materials in protecting metallic materials against corrosion in different aggressive solutions.

Prof. Dr. Abimbola Patricia Idowu Popoola
Dr. Tayo Sanni
Guest Editors

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Keywords

  • metal corrosion
  • corrosion inhibitor 
  • composite coatings 
  • corrosive solutions 
  • nanoparticles 
  • waste management 
  • microstructure 
  • corrosion kinetics 
  • modeling

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Published Papers (1 paper)

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Research

13 pages, 2749 KiB  
Article
Sustainable and Green Approach for Api 5L Pipeline Steel Acidic Corrosion Inhibition Using Agro-Industrial Waste: Experimental and Theoretical
by Abimbola Patricia Popoola, Alice Osheiza Alao and Omotayo Sanni
Metals 2023, 13(7), 1155; https://doi.org/10.3390/met13071155 - 21 Jun 2023
Cited by 3 | Viewed by 1460
Abstract
Currently, the use of synthetic inhibitors in preventing corrosion is destructive to the environment; therefore, natural inhibitors might be an alternative and innovative solution to this challenge, owing to their sustainability. Herein, wasted avocado seed extract was examined as a sustainable and green [...] Read more.
Currently, the use of synthetic inhibitors in preventing corrosion is destructive to the environment; therefore, natural inhibitors might be an alternative and innovative solution to this challenge, owing to their sustainability. Herein, wasted avocado seed extract was examined as a sustainable and green inhibitor for API 5L X65 pipeline steel at an ambient temperature using the gravimetric analysis, the potentiodynamic polarization curve, and linear polarization resistance techniques. The inhibitor’s chemical characterization was carried out with Fourier-transform infrared spectroscopy (FTIR), and the morphological characterization was carried out by detailed scanning electron microscopy and energy-dispersive X-ray spectroscopy (SEM/EDX). The result showed that the extract decreased the corrosion rate by retarding the cathodic and anodic electrochemical reactions, with a maximum efficiency of 88% at 5 g/L. The extract was adsorbed physically onto the X 65 steel following the Langmuir adsorption isotherms. The electrochemical studies showed that the agro-waste was a mixed-type inhibitor. The SEM image of the X65 steel with the extract showed thin film formation on the steel surface. The extract can be substituted for synthetic inhibitors, which are toxic, scarce, and costly. Full article
(This article belongs to the Special Issue Waste Materials for Sustainable Corrosion Protection of Metals)
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