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.

Developing Deeper Understanding of Green Inhibitors for Corrosion of Reinforcing Steel in Concrete

2015 ◽  
pp. 118-146 ◽  
Author(s):  
Mohammad Ismail ◽  
Pandian Bothi Raja ◽  
Abdulrahman Asipita Salawu
Keyword(s):  
Corrosion Inhibitors ◽  
Engineering Students ◽  
Inorganic Compounds ◽  
Environmentally Benign ◽  
Reinforcing Steel ◽  
Protection Measures ◽  
Green Inhibitors ◽  
Concrete Corrosion ◽  
Chloride Attack ◽  
Green Corrosion Inhibitors

Corrosion of reinforcing steel in concrete is a very serious and significant problem in the construction industry. The primary cause of corrosion of reinforcing steel is chloride attack or carbonation. Among several protection measures for concrete corrosion, the usage of corrosion inhibitors is very attractive from the view of cost and ease of application. Though there are numerous organic and inorganic compounds that have been tested and applied industrially as corrosion inhibitors, restrictive environmental regulations have compelled and motivated researchers towards the development of cheap, non-toxic and environmentally benign natural or green corrosion inhibitors. Recent studies on green inhibitors have shown that they are more effective and highly environmentally benign compared to synthetic inhibitors used in the industries. This chapter contributes to developing awareness, understanding and innovative involvement of materials and engineering students in this area that is vital to reduce expenditure related to corrosion problems when they serve in the industries.

scholarly journals Case-Studies on Green Corrosion Inhibitors

2021 ◽  
pp. 204-221
Author(s):  
M. Ramesh
Keyword(s):  
Process Control ◽  
Case Studies ◽  
Corrosion Inhibitors ◽  
Low Cost ◽  
Metals And Alloys ◽  
Industrial Equipment ◽  
Green Inhibitors ◽  
Materials Used ◽  
Green Corrosion Inhibitors ◽  
Cathode Protection

Corrosion in metals and its alloys is an inevitable phenomenon but can be controlled by suitable classical methods like process control, cathode protection, surface treating methods, impurity reduction in metals and addition of metals to form alloys. Nevertheless, the employment of corrosion inhibitors is still a noteworthy and simplest of all the above processes in protecting the metals and alloys especially in acidic media. Protection of metals against corrosion not only prevents corrosion but also is beneficial in terms of money loss as far as industrial equipment, surfaces and vessels are concerned. Since the use of organic and inorganic inhibitors are highly discouraged due to their high cost and toxicity, necessity has adequately aroused the development of corrosion inhibitors which are natural and green. Trends, nowadays, focussed in controlling corrosion in various metals and alloys through green corrosion inhibitors consisting of natural elements alone. In contrast to the inorganic inhibitors, green corrosion inhibitors are characterized by biodegradability, low cost and meagre toxicity. Several researchers are now turning themselves towards the research of green inhibitors which are of no threat to humans and the ecosystem. The current discussion is focussed on the fundamentals of corrosion, corrosion inhibition, materials used for it and case studies of green inhibitors used for corrosion control in various conventional and monolithic metals.

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 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 Perbaikan Proses Pengujian Qualitas Pada Produk Donut Mix Untuk Meningkatkan Produktivitas

2021 ◽  
Vol 6 (2) ◽  
pp. 93
Author(s):  
Nur Fadilah Fatma ◽  
Henri Ponda ◽  
Dian Yuliani
Keyword(s):  
Fault Tree ◽  
Fault Tree Analysis ◽  
Value Added ◽  
Test Methods ◽  
Flow Process ◽  
Tree Analysis ◽  
Current Test ◽  
The World ◽  
Sample Testing ◽  
The Impact

A company, will experience a process of ups and downs where this is a common thing. At the end of 2020, the world was shocked by the corona virus pandemic in all parts of the world. The impact of this pandemic has led to the confinement of employees as in this company. So that it makes productivity decrease, especially in the Quality department. To deal with this, the company asks employees to make changes in the sample testing flow process, to identify non-value-added activities. This resulted in disruption of the shipping process and many samples piled up. The purpose of this study is to identify and plan improvements that lead to non-value-added activities. This study uses the Fault Tree Analysis (FTA) and 5W1H methods. The FTA analysis shows that the cause of non-value-added activity is the mixing process is too long, too many processes during molding and the proofing process is too long. Based on this FTA analysis, priorities for corrective action plans can be determined to implement these improvements. The improvement plan uses the 5W1H method, which is to review the current test methods. The results of this study were very effective because they were able to reduce the processing time by 59 minutes.Keywords: Fault Tree Analysis, 5W1H, flow process, effectiveness and pandemic.

scholarly journals Sustainable Coatings on Metallic Alloys as a Nowadays Challenge

2021 ◽  
Vol 13 (18) ◽  
pp. 10217
Author(s):  
Radu Nartita ◽  
Daniela Ionita ◽  
Ioana Demetrescu
Keyword(s):  
Corrosion Inhibitors ◽  
Raw Materials ◽  
Metallic Alloys ◽  
Advanced Materials ◽  
Special Focus ◽  
High Entropy Alloys ◽  
Future Perspectives ◽  
High Entropy ◽  
Green Corrosion Inhibitors ◽  
Selection Of

Starting with a description of the meaning of sustainable coating nowadays, this review presents a selection of methods for sustainable coatings manufacture using raw materials, saving energy and costs. This selection creates an introduction for the coatings performances of intensively investigated coated alloys and their multifunctionality. There are many examples and EU recommendations to be discussed, and we especially chose to introduce sustainable coatings with both industrial and medical functions, such as bioinspired films and coatings on high-entropy alloys, biodegradable metallic alloys, etc. A special focus is on nanotechnology and nanomaterials in green procedures, enhancing coatings’ multifunctionality, introducing green corrosion inhibitors, smart additives, and coatings based on superhydrophobicity. The conclusions and future perspectives of sustainable and multifunctional coatings, as expressions of sustainable advanced materials, are based on important motivations of such studies.

“To Corrupt a Man in the Midst of a Verse”: Ben Jonson and the Prose of the World

2017 ◽  
Vol 24 (1) ◽  
pp. 46-72
Author(s):  
Jacob Tootalian
Keyword(s):  
Mixed Mode ◽  
Ben Jonson ◽  
Digital Analysis ◽  
Interactive Engagement ◽  
Sentence Level ◽  
Linguistic Patterns ◽  
The World ◽  
Selection Of ◽  
Bartholomew Fair

Ben Jonson's early plays show a marked interest in prose as a counterpoint to the blank verse norm of the Renaissance stage. This essay presents a digital analysis of Jonson's early mixed-mode plays and his two later full-prose comedies. It examines this selection of the Jonsonian corpus using DocuScope, a piece of software that catalogs sentence-level features of texts according to a series of rhetorical categories, highlighting the distinctive linguistic patterns associated with Jonson's verse and prose. Verse tends to employ abstract, morally and emotionally charged language, while prose is more often characterized by expressions that are socially explicit, interrogative, and interactive. In the satirical economy of these plays, Jonson's characters usually adopt verse when they articulate censorious judgements, descending into prose when they wade into the intractable banter of the vicious world. Surprisingly, the prosaic signature that Jonson fashioned in his earlier drama persisted in the two later full-prose comedies. The essay presents readings of Every Man Out of his Humour and Bartholomew Fair, illustrating how the tension between verse and prose that motivated the satirical dynamics of the mixed-mode plays was released in the full-prose comedies. Jonson's final experiments with theatrical prose dramatize the exhaustion of the satirical impulse by submerging his characters almost entirely in the prosaic world of interactive engagement.

Presence, Environment, and Sound and the Role of Imagination

2019 ◽  
pp. 667-681
Author(s):  
Mark Grimshaw-Aagaard
Keyword(s):  
Computer Games ◽  
Virtual World ◽  
Actual World ◽  
Sensory Input ◽  
The World ◽  
Visual Dimension ◽  
The Creation ◽  
First Person Shooter ◽  
Selection Of

Mark Grimshaw-Aagaard addresses the role of sound in the creation of presence in virtual and actual worlds. He argues that imagination is a central part of the generation and selection of perceptual hypotheses—models of the world in which we can act—that emerge from what Grimshaw-Aagaard calls the “exo-environment” (the sensory input) and the “endo-environment” (the cognitive input). Grimshaw-Aagaard further divides the exo-environment into a primarily auditory and a primarily visual dimension and he deals with the actual world of his own apartment and the virtual world of first-person-shooter computer games in order to exemplify how we perceptually construct an environment that allows for the creation of presence.

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