Corrosion prevention through performance optimization of biological cathodic protection system

Unprotected pipelines, whether exposed to the air, submerged in seawater or buried underground are susceptible to corrosion and this phenomenon has been identified as one of the major mechanism that affects failures in oil and gas pipelines. At present, impressed current cathodic protection (ICCP) s...

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Main Author:	Azman, Anis Fitri Afira
Format:	Thesis
Language:	English
Published:	2021
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/102119/1/AnisFitriAfiraMFChE2021.pdf
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id	my-utm-ep.102119
record_format	uketd_dc
spelling	my-utm-ep.1021192023-08-05T02:38:53Z Corrosion prevention through performance optimization of biological cathodic protection system 2021 Azman, Anis Fitri Afira TP Chemical technology Unprotected pipelines, whether exposed to the air, submerged in seawater or buried underground are susceptible to corrosion and this phenomenon has been identified as one of the major mechanism that affects failures in oil and gas pipelines. At present, impressed current cathodic protection (ICCP) system is one of the methods used to control the corrosion of the steel pipeline. In this study, a new system was developed based on ICCP namely biological cathodic protection (CP) system. This system used the concept of microbial fuel cells (MFCs) to generate a protective current to the cathode (pipe). Little to know on the effect of both hydraulic retention time (HRT) and electrode surface area to anode-compartment volume ratio (ESAVR) simultaneously on the voltage output particularly for biological CP system. Therefore, this study analysed the optimum value of HRT and ESAVR of the biological CP system in generating adequate protective current for the carbon steel pipe with respect to copper/copper sulfate (Cu/CuSO4) reference electrode which is -850 mV. Optimization of these two parameters on the biological CP system was done using response surface methodology based on central composite design (CCD) approach. CCD predicted values and experimental results showed a strong agreement, with an R2 value of 0.7953. The estimated optimal conditions for HRT and ESAVR of anode were at 9.21 h and 0.239 cm2/cm3 respectively. Consequently, the polarization study was conduted to determine the main limiting factors that occurred in the system. It was found that the main losses that occurred was due to the concentration losses whilst the maximum power point recorded was 1.1908 mW/cm2 (Run 11). The methodology supporting the purpose of this study by providing protective current to carbon steel pipe and thus verified the ability of this system to protect the pipe from corrosion. 2021 Thesis http://eprints.utm.my/id/eprint/102119/ http://eprints.utm.my/id/eprint/102119/1/AnisFitriAfiraMFChE2021.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:145601 masters Universiti Teknologi Malaysia Faculty of Engineering - School of Chemical & Energy Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Azman, Anis Fitri Afira Corrosion prevention through performance optimization of biological cathodic protection system
description	Unprotected pipelines, whether exposed to the air, submerged in seawater or buried underground are susceptible to corrosion and this phenomenon has been identified as one of the major mechanism that affects failures in oil and gas pipelines. At present, impressed current cathodic protection (ICCP) system is one of the methods used to control the corrosion of the steel pipeline. In this study, a new system was developed based on ICCP namely biological cathodic protection (CP) system. This system used the concept of microbial fuel cells (MFCs) to generate a protective current to the cathode (pipe). Little to know on the effect of both hydraulic retention time (HRT) and electrode surface area to anode-compartment volume ratio (ESAVR) simultaneously on the voltage output particularly for biological CP system. Therefore, this study analysed the optimum value of HRT and ESAVR of the biological CP system in generating adequate protective current for the carbon steel pipe with respect to copper/copper sulfate (Cu/CuSO4) reference electrode which is -850 mV. Optimization of these two parameters on the biological CP system was done using response surface methodology based on central composite design (CCD) approach. CCD predicted values and experimental results showed a strong agreement, with an R2 value of 0.7953. The estimated optimal conditions for HRT and ESAVR of anode were at 9.21 h and 0.239 cm2/cm3 respectively. Consequently, the polarization study was conduted to determine the main limiting factors that occurred in the system. It was found that the main losses that occurred was due to the concentration losses whilst the maximum power point recorded was 1.1908 mW/cm2 (Run 11). The methodology supporting the purpose of this study by providing protective current to carbon steel pipe and thus verified the ability of this system to protect the pipe from corrosion.
format	Thesis
qualification_level	Master's degree
author	Azman, Anis Fitri Afira
author_facet	Azman, Anis Fitri Afira
author_sort	Azman, Anis Fitri Afira
title	Corrosion prevention through performance optimization of biological cathodic protection system
title_short	Corrosion prevention through performance optimization of biological cathodic protection system
title_full	Corrosion prevention through performance optimization of biological cathodic protection system
title_fullStr	Corrosion prevention through performance optimization of biological cathodic protection system
title_full_unstemmed	Corrosion prevention through performance optimization of biological cathodic protection system
title_sort	corrosion prevention through performance optimization of biological cathodic protection system
granting_institution	Universiti Teknologi Malaysia
granting_department	Faculty of Engineering - School of Chemical & Energy Engineering
publishDate	2021
url	http://eprints.utm.my/id/eprint/102119/1/AnisFitriAfiraMFChE2021.pdf
_version_	1776100850280693760

Corrosion prevention through performance optimization of biological cathodic protection system

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