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ABSTRACT: The annual cost of corrosion in the United States alone is estimated to be greater than $300 billion. To combat this issue, approximately $121 billion per year are spent on methods to prevent and control corrosion. Of this total, $0.4 billion are spent on vapor corrosion inhibitors (VCI). New technologies and raw materials derived from renewable, biodegradable, and nonhazardous raw materials are of particular interest for use as VCI chemicals. As government policy continues to promote green alternatives to petrochemicals, the availability and utility of agricultural products and by-products will become economically advantageous. The corrosion inhibitive properties of several agri-products were evaluated and screened for their corrosion inhibiting performance and to identify potential applications. The properties evaluated included contact- and vapor- corrosion inhibition, as well as the ability to provide protection against corrosive environments such as high acid concentration and salt solutions. Rust and scale removing properties were also explored. During these investigations, it was discovered that sugar beet molasses and raffinate demonstrated very good vapor corrosion inhibiting properties. The details of these findings and potential applications are reported herein. INTRODUCTION The annual cost of corrosion in the United States alone is estimated to be greater than $300 billion. To combat this issue, approximately $121 billion per year are spent on methods to prevent and control corrosion.1 Of this total, $0.4 billion are spent on vapor corrosion inhibitors (VCI). New technologies and raw materials derived from renewable, biodegradable, and nonhazardous raw materials are of particular interest for use as VCI chemicals. Molasses is the liquid residue after sucrose crystals have been harvested in sugar production from sugar beets or sugar cane2. When molasses is further processed to remove more sugar, it becomes raffinate. For the purpose of discussing vapor corrosion inhibition, the term molasses and raffinate are used interchangeably.
- Water & Waste Management > Water Management > Water & Sanitation Products (0.83)
- Materials > Chemicals > Specialty Chemicals (0.83)
- Materials > Chemicals > Commodity Chemicals > Petrochemicals (0.69)
- Energy > Oil & Gas > Downstream (0.51)
ABSTRACT: The corrosion inhibitive properties of biodegradable, and non-hazardous corn-based byproducts were evaluated and screened to identify potential applications. The properties evaluated included contact- and vapor-phase corrosion inhibition, as well as the ability to act as a barrier against corrosive environments such as high acid concentration and salt solutions. Rust and scale removing properties were also tested. During these investigations, it was discovered that a solvent extract from dried distilled grains with solubles (DDGS) demonstrated very good corrosion protection properties for steel in acidic environments. A variety of plant extracts have been shown to inhibit corrosion of steel in acidic conditions, but such activity has not previously been demonstrated with corn extracts. Aqueous corn extracts also proved to provide corrosion protection when used as an inhibitor in de-icing compounds. The details of these findings and potential applications are reported herein. INTRODUCTION The annual cost of corrosion in the United States alone is estimated to be greater than $300 billion. To combat this issue, approximately $121 billion per year are spent on methods to prevent and control corrosion.1 Some of the techniques implemented include: material selection, cathodic protection, protective coatings, and corrosion inhibitors. In a search to find new technologies for the aforementioned techniques, products that are made from renewable, biodegradable, and non-hazardous raw materials have become of particular interest due to a growing consciousness of environmental concerns. As government policy continues to promote green alternatives to petrochemicals, the availability and utility of agricultural by-products will become economically advantageous. The results reported herein demonstrate the use of agricultural by-products as potential corrosion inhibitors. The materials chosen for this study were corn derived by-products from ethanol production. The by-products evaluated include thin stillage, thick stillage, and dried distilled grains with solubles (DDGS). Further reduction in moisture content results in thick stillage.
- Water & Waste Management (1.00)
- Materials > Chemicals > Commodity Chemicals > Petrochemicals (1.00)
- Energy (1.00)
- Well Completion > Well Integrity > Subsurface corrosion (tubing, casing, completion equipment, conductor) (1.00)
- Production and Well Operations > Production Chemistry, Metallurgy and Biology > Corrosion inhibition and management (including H2S and CO2) (1.00)
- Facilities Design, Construction and Operation > Pipelines, Flowlines and Risers > Materials and corrosion (1.00)