Anaum Nawaz | University of the Punjab, Lahore, Pakistan (original) (raw)

Papers by Anaum Nawaz

Recent years have seen a surge in interest in green corrosion inhibitors made from natural resour... more Recent years have seen a surge in interest in green corrosion inhibitors made from natural resources. An evaluation of Piper nigrum and Nigella sativa (PNNS) extract as corrosion inhibitors against A335 P22 steel in simulated produced water (SPW) solution was conducted in this research. Fourier-transform infrared (FT-IR), and 1 H NMR were used to evaluate the functional groups of extract, and electrochemical measurements were carried out to evaluate the anti-corrosive behavior at room temperature. In all the electrochemical studies, the inhibitory effect of green extract increased as the dose was increase, but after an optimum concentration which was found to be 1000 ppm with maximum solubility in electrolyte, the increase in corrosion rate has been observed due to localized corrosion. With 1000 ppm inhibitor concentration approx. 86 % inhibition efficiency is recorded corresponding to a significant decrease in corrosion rate (from 7.68 mpy to 1.22 mpy). Electrochemical impedance spectroscopy (EIS) analysis, and SEM surface analyses also supported the findings that adding extracted inhibitor can enhance the corrosion resistance of A335 P22 steel in SPW.

International Journal of Electrochemical Science, May 1, 2024

European Journal of Sustainable Development, Jun 1, 2013

In the contemporary age where the globalization is taking place in every sphere of life, the acad... more In the contemporary age where the globalization is taking place in every sphere of life, the academic institutions occupy their place at the helm. The dynamism in the academic institutions in general and the universities in specific is directly proportional to the competence of their employees. The success of the universities depends upon solid functioning, faithfulness and the involved academicians regarding high level of teaching and research. Provision of workforce to the different sectors countrywide is possible only through the universities with high level of educational standards and Organizational Commitment on the part of the staff members especially the academicians. Unlike the developed countries, this role becomes more emphasizing in the developing countries like Pakistan. The sole objective of this 'Review Article' is to investigate the impact of demographics (gender, qualification, designation, age, and marital status) on Organizational Commitment (Emotional, Cost-benefited and Obligatory) of employees, working in the public sector universities. Up to some extent, it is a complicated task to come across and deal with the people who are physically, linguistically, culturally, educationally and ethnically diverse. In the light of current research we construct a 'Theoretical Framework' on the topic which will subsequently be used as a 'Research Model' for the upcoming 'experimental-study', using the study of workforce from the universities of Khyber Pakhtunkhwa, Pakistan. It is acknowledged from the present study that the demographics have the significant impact on the organizational commitment.

The corrosion behavior of 316L stainless steel in the presence of various Cl ions concentrations ... more The corrosion behavior of 316L stainless steel in the presence of various Cl ions concentrations at constant dose of Zinc orthophosphate (ZOP) containing inhibitor was investigated electrochemically by Tafel Scan, Potentiodynamic and Cyclic polarization. These techniques evaluated the probability of pitting to occur and the effect of ZOP inhibitor on pitting resistance. The corrosion inhibition by ZOP was considered due to formation of passive film which obstructed the approach of aggressive Cl ions at the surface. The effectiveness of ZOP containing inhibitor was found more pronounced at 100 ppm Cl ions concentration than at higher level. Increase in Cl ion concentration in solution not only shifted the pitting potential towards negative direction but also adversely affected the inhibitor efficiency which resulted in high corrosion rate.

Surface and Coatings Technology

Materials Today: Proceedings, 2015

International Journal of Materials Research, 2015

Predicting the corrosiontendencyof a -brass in acidica nd alkaline tapwater Thisstudyfocuseson th... more Predicting the corrosiontendencyof a -brass in acidica nd alkaline tapwater Thisstudyfocuseson the electrochemicalbehaviorof brass in acidicand alkaline tapwater.Bothconditionswerestudied using corrosion potential,cyclicpolarization and electrochemicali mpedancespectroscopy.Weightloss experiments werealsop erformed tovalidatecorrosion behavior. Itwasevaluated from corrosion potentialvaluesand Pourbaixdiagramsthatbrass surfacewasaggressivelyattacked atlow pH duetod issolution of zinc-richp haseand solvation of cupriteand zincateathigh pH bybreakdownofthe passivef ilm. Undernearneutralconditionsthe increasei n charge transferr esistancecorresponded tof ormationo fa stable passivef ilm. Brass exhibited peculiarbehaviorat pH 1and 12byshowing lowcharge transferresistancedue top referentialattacko fzinca nd solvationo fcopper/zinc richp hases,respectively,a sv alidated byimpedancespectroscopy.

Recent years have seen a surge in interest in green corrosion inhibitors made from natural resour... more Recent years have seen a surge in interest in green corrosion inhibitors made from natural resources. An evaluation of Piper nigrum and Nigella sativa (PNNS) extract as corrosion inhibitors against A335 P22 steel in simulated produced water (SPW) solution was conducted in this research. Fourier-transform infrared (FT-IR), and 1 H NMR were used to evaluate the functional groups of extract, and electrochemical measurements were carried out to evaluate the anti-corrosive behavior at room temperature. In all the electrochemical studies, the inhibitory effect of green extract increased as the dose was increase, but after an optimum concentration which was found to be 1000 ppm with maximum solubility in electrolyte, the increase in corrosion rate has been observed due to localized corrosion. With 1000 ppm inhibitor concentration approx. 86 % inhibition efficiency is recorded corresponding to a significant decrease in corrosion rate (from 7.68 mpy to 1.22 mpy). Electrochemical impedance spectroscopy (EIS) analysis, and SEM surface analyses also supported the findings that adding extracted inhibitor can enhance the corrosion resistance of A335 P22 steel in SPW.

International Journal of Electrochemical Science, May 1, 2024

European Journal of Sustainable Development, Jun 1, 2013

In the contemporary age where the globalization is taking place in every sphere of life, the acad... more In the contemporary age where the globalization is taking place in every sphere of life, the academic institutions occupy their place at the helm. The dynamism in the academic institutions in general and the universities in specific is directly proportional to the competence of their employees. The success of the universities depends upon solid functioning, faithfulness and the involved academicians regarding high level of teaching and research. Provision of workforce to the different sectors countrywide is possible only through the universities with high level of educational standards and Organizational Commitment on the part of the staff members especially the academicians. Unlike the developed countries, this role becomes more emphasizing in the developing countries like Pakistan. The sole objective of this 'Review Article' is to investigate the impact of demographics (gender, qualification, designation, age, and marital status) on Organizational Commitment (Emotional, Cost-benefited and Obligatory) of employees, working in the public sector universities. Up to some extent, it is a complicated task to come across and deal with the people who are physically, linguistically, culturally, educationally and ethnically diverse. In the light of current research we construct a 'Theoretical Framework' on the topic which will subsequently be used as a 'Research Model' for the upcoming 'experimental-study', using the study of workforce from the universities of Khyber Pakhtunkhwa, Pakistan. It is acknowledged from the present study that the demographics have the significant impact on the organizational commitment.

The corrosion behavior of 316L stainless steel in the presence of various Cl ions concentrations ... more The corrosion behavior of 316L stainless steel in the presence of various Cl ions concentrations at constant dose of Zinc orthophosphate (ZOP) containing inhibitor was investigated electrochemically by Tafel Scan, Potentiodynamic and Cyclic polarization. These techniques evaluated the probability of pitting to occur and the effect of ZOP inhibitor on pitting resistance. The corrosion inhibition by ZOP was considered due to formation of passive film which obstructed the approach of aggressive Cl ions at the surface. The effectiveness of ZOP containing inhibitor was found more pronounced at 100 ppm Cl ions concentration than at higher level. Increase in Cl ion concentration in solution not only shifted the pitting potential towards negative direction but also adversely affected the inhibitor efficiency which resulted in high corrosion rate.

Surface and Coatings Technology

Materials Today: Proceedings, 2015

International Journal of Materials Research, 2015

Predicting the corrosiontendencyof a -brass in acidica nd alkaline tapwater Thisstudyfocuseson th... more Predicting the corrosiontendencyof a -brass in acidica nd alkaline tapwater Thisstudyfocuseson the electrochemicalbehaviorof brass in acidicand alkaline tapwater.Bothconditionswerestudied using corrosion potential,cyclicpolarization and electrochemicali mpedancespectroscopy.Weightloss experiments werealsop erformed tovalidatecorrosion behavior. Itwasevaluated from corrosion potentialvaluesand Pourbaixdiagramsthatbrass surfacewasaggressivelyattacked atlow pH duetod issolution of zinc-richp haseand solvation of cupriteand zincateathigh pH bybreakdownofthe passivef ilm. Undernearneutralconditionsthe increasei n charge transferr esistancecorresponded tof ormationo fa stable passivef ilm. Brass exhibited peculiarbehaviorat pH 1and 12byshowing lowcharge transferresistancedue top referentialattacko fzinca nd solvationo fcopper/zinc richp hases,respectively,a sv alidated byimpedancespectroscopy.