Chitosan/Lignosulfonate Nanospheres as 'Green' Biocide for Controlling the Microbiologically Influenced Corrosion of Carbon Steel
| Autor: | Khadeeja A. Jabbar, Ravi P. Pandey, Ayman Samara, Pathath Abdul Rasheed, Aboubakr M. Abdullah, Khaled A. Mahmoud |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Biocide
Carbon steel sulfate reducing bacteria 020209 energy microbial corrosion lignosulfonate 02 engineering and technology engineering.material lcsh:Technology Article biofilm Corrosion Chitosan chemistry.chemical_compound 0202 electrical engineering electronic engineering information engineering General Materials Science Sulfate-reducing bacteria lcsh:Microscopy lcsh:QC120-168.85 impedance spectroscopy lcsh:QH201-278.5 lcsh:T Biofilm 021001 nanoscience & nanotechnology Dielectric spectroscopy chemistry Microbial corrosion Chemical engineering lcsh:TA1-2040 engineering lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering chitosan 0210 nano-technology lcsh:Engineering (General). Civil engineering (General) lcsh:TK1-9971 |
| Zdroj: | Materials, Vol 13, Iss 2484, p 2484 (2020) Materials Volume 13 Issue 11 |
| ISSN: | 1996-1944 |
| Popis: | In this work, uniform cross-linked chitosan/lignosulfonate (CS/LS) nanospheres with an average diameter of 150&ndash 200 nm have been successfully used as a novel, environmentally friendly biocide for the inhibition of mixed sulfate-reducing bacteria (SRB) culture, thereby controlling microbiologically influenced corrosion (MIC) on carbon steel. It was found that 500 µ g· mL&minus 1 of the CS/LS nanospheres can be used efficiently for the inhibition of SRB-induced corrosion up to a maximum of 85% indicated by a two fold increase of charge transfer resistance (Rct) on the carbon steel coupons. The hydrophilic surface of CS/LS can readily bind to the negatively charged bacterial surfaces and thereby leads to the inactivation or damage of bacterial cells. In addition, the film formation ability of chitosan on the coupon surface may have formed a protective layer to prevent the biofilm formation by hindering the initial bacterial attachment, thus leading to the reduction of corrosion. |
| Databáze: | OpenAIRE |
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