scholarly journals Green Organic Inhibitors for Corrosion Protection

2021 ◽  
pp. 101-129
Author(s):  
Y.V.D. Nageswar
Keyword(s):  
Natural Products ◽  
Organic Compounds ◽  
Corrosion Protection ◽  
Corrosion Inhibitors ◽  
Natural Process ◽  
Research Activity ◽  
The World ◽  
Organic Inhibitors ◽  
Metallic Corrosion ◽  
Green Corrosion Inhibitors

Plants are a rich source of different varied organic compounds. Due to the important applications of naturally occurring chemicals their derivatives are also pursued for modifying and potentiating the activities of natural products. Metallic corrosion is a natural process resulting in heavy losses in various fields. Non hazardous and non toxic corrosion inhibitors gained significance due to the environmental regularities and guidelines issued in the course of saving the pristine nature of environment and to maintain the sustainability of our earth. Green corrosion inhibitors play a potential role for the above said cause. Recent research contributions on green corrosion inhibitors from the active researchers in the concerned expertise are presented briefly here to give an idea about the current research activity across the world.

scholarly journals Recent Natural Corrosion Inhibitors for Mild Steel: An Overview

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Marko Chigondo ◽  
Fidelis Chigondo
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibitors ◽  
Impurity Content ◽  
Environmentally Benign ◽  
Acidic Solutions ◽  
Treatment Techniques ◽  
Organic Inhibitors ◽  
Prevention Methods ◽  
Metallic Corrosion ◽  
Work Done

Traditionally, reduction of corrosion has been managed by various methods including cathodic protection, process control, reduction of the metal impurity content, and application of surface treatment techniques, as well as incorporation of suitable alloys. However, the use of corrosion inhibitors has proven to be the easiest and cheapest method for corrosion protection and prevention in acidic media. These inhibitors slow down the corrosion rate and thus prevent monetary losses due to metallic corrosion on industrial vessels, equipment, or surfaces. Inorganic and organic inhibitors are toxic and costly and thus recent focus has been turned to develop environmentally benign methods for corrosion retardation. Many researchers have recently focused on corrosion prevention methods using green inhibitors for mild steel in acidic solutions to mimic industrial processes. This paper provides an overview of types of corrosion, corrosion process, and mainly recent work done on the application of natural plant extracts as corrosion inhibitors for mild steel.

scholarly journals Croton lechleri Extracts as Green Corrosion Inhibitors of Admiralty Brass in Hydrochloric Acid

Molecules ◽  
2021 ◽  
Vol 26 (24) ◽  
pp. 7417
Author(s):  
Carlos Cevallos-Morillo ◽  
Pablo Cisneros-Pérez ◽  
Roxana Llive ◽  
Marvin Ricaurte ◽  
Carlos Reinoso ◽  
...  
Keyword(s):  
Natural Products ◽  
Photoelectron Spectroscopy ◽  
Surface Characterization ◽  
Corrosion Inhibitors ◽  
Electrochemical Impedance ◽  
Transfer Resistance ◽  
X Ray ◽  
Chemical Structures ◽  
Green Corrosion Inhibitors ◽  
Croton Lechleri

Croton lechleri, commonly known as Dragon’s blood, is a tree cultivated in the northwest Amazon rainforest of Ecuador and Peru. This tree produces a deep red latex which is composed of different natural products such as phenolic compounds, alkaloids, and others. The chemical structures of these natural products found in C. lechleri latex are promising corrosion inhibitors of admiralty brass (AB), due to the number of heteroatoms and π structures. In this work, three different extracts of C. lechleri latex were obtained, characterized phytochemically, and employed as novel green corrosion inhibitors of AB. The corrosion inhibition efficiency (IE%) was determined in an aqueous 0.5 M HCl solution by potentiodynamic polarization (Tafel plots) and electrochemical impedance spectroscopy, measuring current density and charge transfer resistance, respectively. In addition, surface characterization of AB was performed by scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy techniques. Chloroform alkaloid-rich extracts resulted in IE% of 57% at 50 ppm, attributed to the formation of a layer of organic compounds on the AB surface that hindered the dezincification process. The formulation of corrosion inhibitors from C. lechleri latex allows for the valorization of non-edible natural sources and the diversification of the offer of green corrosion inhibitors for the chemical treatment of heat exchangers.

Evaluation of Green Inhibitors

2002 ◽  
Author(s):  
Sankara Papavinasam ◽  
Alex Doiron ◽  
R. Winston Revie
Keyword(s):  
Environmental Effects ◽  
Corrosion Inhibitors ◽  
Test Methods ◽  
Offshore Pipelines ◽  
Internal Corrosion ◽  
Green Inhibitors ◽  
Current Test ◽  
The World ◽  
Green Corrosion Inhibitors ◽  
Selection Of

Producing pipelines are protected from internal corrosion by the application of corrosion inhibitors. Environmental effects of corrosion inhibitors have received increased attention in recent years, especially for offshore pipelines. In response to the drive for more environmentally friendly inhibitors, several “green” corrosion inhibitors have been developed. In the design of new classes of corrosion inhibitors, there is a need to take into account the various environmental regulations that exist. In this paper, the criteria for selecting green inhibitors as used in various part of the world are reviewed. The current test methods, their reproducibility and effectiveness, and their accuracy in relation to the selection of green inhibitors are discussed.

Corrosion protection of copper and copper alloys in different corrosive medium using environmentally friendly corrosion inhibitors

2020 ◽  
Vol 38 (2) ◽  
pp. 101-109 ◽  
Author(s):  
Kebede W. Shinato ◽  
Abraham Amenay Zewde ◽  
Ying Jin
Keyword(s):  
Corrosion Protection ◽  
Copper Alloy ◽  
Corrosion Inhibitors ◽  
Copper Alloys ◽  
Environmentally Friendly ◽  
Metal Corrosion ◽  
Corrosion Mechanism ◽  
Scientific Papers ◽  
Environmentally Safe ◽  
Green Corrosion Inhibitors

AbstractThe corrosion mechanism of copper and copper alloy is reviewed. A number of scientific papers have been investigated to determine the corrosion mechanism and protection techniques of copper and copper alloy corrosion. Results have shown that copper can be corroded in an acidic or an alkaline environment, and oxide formation is the corrosion initiation process. The use of corrosion inhibitors is one of several ways of controlling metal corrosion. There are inorganic (toxic) and organic (green) corrosion inhibitors invented so far. Nowadays, environmental issue is a concern of several scientists in the world. From the results of recent scientific papers, green corrosion inhibitors can be used for copper corrosion protection and they are both economical and environmentally safe. Furthermore, future researches are needed to determine more efficient, environmentally friendly corrosion inhibitors for copper and copper alloys.

scholarly journals Green Corrosion Inhibitors from Biomass and Natural Sources

2021 ◽  
pp. 46-69
Author(s):  
A.N. Grassino
Keyword(s):  
Green Chemistry ◽  
Corrosion Inhibitors ◽  
Metals And Alloys ◽  
Significant Problem ◽  
Biological Origin ◽  
Plant Materials ◽  
Natural Sources ◽  
The World ◽  
The One ◽  
Green Corrosion Inhibitors

Considering the fact that corrosion of metals and alloys presents a significant problem all over the world, the one of most recently utilized approaches to combat this problem necessitates the researches for employment of new materials, which satisfied the green chemistry idea. In this connection, the development of sustainable corrosion inhibitors is highly demanded due to the increasing of awareness of green chemistry principles not only in corrosion discipline, but also in all branches of science and technology. Due to natural and biological origin as well as their eco-friendly extraction, the plant materials and biomass derived from various waste sources could be applied as beneficial substances for metals and alloys protection in different corrosion environment. Therefore, this work reports the main findings regarding their employments as green anticorrosion substances.

scholarly journals A Review on Plants and Biomass Wastes as Organic Green Corrosion Inhibitors for Mild Steel in Acidic Environment

Metals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1062
Author(s):  
Norbaayah Ahmad Reza ◽  
Nor Hasrul Akhmal ◽  
Nor Akmal Fadil ◽  
Mohd Firdaus Mohd Taib
Keyword(s):  
Acid Solution ◽  
Natural Resources ◽  
Metal Surfaces ◽  
Corrosion Inhibitors ◽  
Acid Corrosion ◽  
Protective Layer ◽  
Acid Environment ◽  
Organic Inhibitors ◽  
Organic Corrosion Inhibitors ◽  
Green Corrosion Inhibitors

Acid corrosion is a problem pertaining to corrosion that involves an acid solution. It is important to treat metal to preserve its integrity. Thus, acids are utilized to clean and treat metal surfaces. In return, this may lead to over-etching and metal degradation. Corrosion inhibitors were introduced as a solution for the issue. However, there are some problems associated with the usage of conventional corrosion inhibitors. Traces of nitrites and chromates that are present in the inhibitors may lead to serious health and environmental issues. As a solution, organic green corrosion inhibitors have been studied to replace the conventional corrosion inhibitors. These inhibitor molecules form a protective layer on top of the metal surface to suppress metal dissolution when added to the acid solution. This process prevents direct contact between the metal surfaces and the acid environment. This study explores the usage of natural resources and biomass wastes as the basis for organic green corrosion inhibitors. This study also provides some suggestions for new biomass wastes that can be studied as new organic corrosion inhibitors, and it is aimed at opening the perspective of researchers on exploring new organic inhibitors by using natural resources and biomass wastes.

scholarly journals Current Status, Opportunities and Challenges of Green Corrosion Inhibitors

2021 ◽  
pp. 1-29
Author(s):  
S. Kundu
Keyword(s):  
Natural Products ◽  
Corrosion Inhibitors ◽  
Cost Effective ◽  
Current Status ◽  
Current Development ◽  
Green Corrosion Inhibitors

The term ‘Corrosion’ is associated with the deterioration of materials. To get rid of this problem corrosion inhibitors are commonly used. Though many conventional corrosion inhibitors can efficiently reduce corrosion, their disposal often adversely affects the environment. However, there are many natural products that have the potential of reducing corrosion and they are referred to as green corrosion inhibitors. They are much safer to use and most importantly cost-effective. This chapter deals with the current development of the use of green corrosion inhibitors, their opportunities and challenges.

scholarly journals Green Corrosion Inhibitors to Head Off the Corrosion Rate of ST 37 Steels

2021 ◽  
Vol 2 (1) ◽  
pp. 21-28
Author(s):  
Devi Eka Septiyani Arifin ◽  
Destri Muliastri ◽  
Rudi Rudiana ◽  
Fitri Nur Indah Sari
Keyword(s):  
Corrosion Rate ◽  
Corrosion Inhibitors ◽  
Low Cost ◽  
Natural Process ◽  
Green Inhibitor ◽  
Testing Method ◽  
Guava Leaves ◽  
Green Corrosion Inhibitors ◽  
Organic Inhibitor ◽  
Inhibitor Solution

The corrosions process is a natural process and cannot be hindered, but it can be protected by adding a green inhibitor. Green corrosion inhibitors are a new alternative solution for corrosion protection because they are low-cost, biodegradable, and eco-friendly inhibitors. This research was used papaya leaves dan guava leaves extract as organic inhibitor solution by Maceration Method. The concentration of these green inhibitors is 0 mL, 1 mL, 2.5 mL, 3 mL, and 3.5 mL. The type of testing method used in this research is FTIR, PDP, and weight loss. The results show that there is Tanin function groups in papaya leaves and guava leaves extract.  The potentiodynamic polarization shows the value of corrosion rate without inhibitor is 0,418 mm/year. In contrast, the corrosion rate was decreased with improving the green inhibitor as many 3.5 mL. The corrosion rate was decreased until 0,00055 mm/year, and the value of efficiency is 99,868%.

Organic inhibitors of steel corrosion (analytical review of publications)

2020 ◽  
Vol 25 (2) ◽  
pp. 60-65
Author(s):  
S.A. Teryusheva
Keyword(s):  
Organic Compounds ◽  
Metal Surface ◽  
Corrosion Inhibitors ◽  
Steel Corrosion ◽  
Metal Corrosion ◽  
Structure Of Molecules ◽  
Other Substances ◽  
Analytical Review ◽  
Organic Inhibitors ◽  
General Stage

Analysis of publications is presented on studies of organic steel corrosion inhibitors in environments with hydrogen sulfide with the participation of microorganisms. A relationship is identified between the structure of organic compounds and the composition of their molecules and their efficiency in inhibition of steel corrosion. The effect of organic compounds (phenols, ketones, and quinones) on the metal corrosion process is discussed. A decrease in the rate of cathodic or anodic processes is studied, as dependent on the structure of molecules of organic compounds and pH of the medium. The choice of inhibitors for suppression of corrosion with participation of microorganisms is considered with account for the specificity of their action on a given microorganism and duration of their inhibiting properties: they must not be activated by other substances in the medium, the microorganism must not develop resistance. The mechanism of action of the inhibitor depends on the composition of its molecules, the nature of the corrosive medium and metal. The general stage is the adsorption of its molecules on the metal, depending, in the first instance, on its electronic structure that determines the possibility of chemisorption on the metal surface, as well as on the charge of the metal surface and particles of organic compounds acting as corrosion inhibitors.

Plant extracts as “green” corrosion inhibitors for steel in sulphuric acid

2016 ◽  
Vol 70 (9) ◽  
Author(s):  
Shi Mo ◽  
Hong-Qun Luo ◽  
Nian-Bing Li
Keyword(s):  
Natural Products ◽  
Hydrochloric Acid ◽  
Corrosion Inhibitor ◽  
Sulphuric Acid ◽  
Plant Extracts ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Low Toxicity ◽  
Corrosion Inhibition Efficiency ◽  
Green Corrosion Inhibitors

AbstractIn recent years, plant extracts have become the focus of corrosion inhibitor research due to their low toxicity, easy availability and economical preparation. This review presents most of the recent contributions made to the application of plant extracts as corrosion inhibitors for steel in sulphuric acid, as well as in both hydrochloric acid and sulphuric acid. The constituents, properties, adsorption modes and inhibition mechanisms of these natural products are discussed. Evaluation methods and the factors that influence the corrosion-inhibition efficiency of plant extracts are also summarised.

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