Evaluation of pectin isolated from tomato peel waste as natural tin corrosion inhibitor in sodium chloride/acetic acid solution
| Autor: | Ines Cindrić, Jasna Halambek, Antonela Ninčević Grassino |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
food.ingredient
Polymers and Plastics Pectin Sodium Organic Chemistry chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences Corrosion Dielectric spectroscopy Corrosion inhibitor chemistry.chemical_compound Tomato peel waste Tin Weight loss Electrochemical technique food chemistry Materials Chemistry 0210 nano-technology Nuclear chemistry Waste disposal |
| Zdroj: | Carbohydrate Polymers. 234:115940 |
| ISSN: | 0144-8617 |
| Popis: | The pectin from tomato peel waste (TPP) was employed as tin corrosion inhibitor with the aim to enhance the knowledge regarding the application of natural inhibitors, instead synthetic, and reducing the waste disposal for value-added biopolymers production. To evaluate the TPP anticorrosion activity the commercial apple pectin (CAP) was also utilised. The gravimetric tests show that the highest inhibitive impact (η) of 75.9 % (CAP) and 73.9 % (TPP) are gained at concentration of 20 g L−1. By electrochemical, potentiodynamic polarization and impedance spectroscopy measurements, the maximum η (60.05–65.5 %) are reached at lower concentration (4 g L−1), due to tendency of pectins to form viscous solution. The prominent decreases in current density with the shifts of potential in the cathodic direction revealed that pectins provided cathodic protection of tin surface. Similar inhibition impact of pectins, and fine agreement between applied methods confirmed their suitability against tin corrosion. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect