Abdul Haqi Ibrahim
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Abdul Haqi Ibrahim
Official Name
Ibrahim, Abdul Haqi
Alternative Name
Ibrahim, A H
Main Affiliation
Water Research and Environmental Sustainable Growth (WAREG)
Scopus Author ID
36617479700

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  • Publication
    Influence of Amaranth dye concentration on the efficiency of hybrid system of photocatalytic fuel cell and Fenton process
    ( 2017-10-01)
    Noradiba Nordin
    ;
    Ho Li Ngee
    ;
    Ong Soon An
    ;
    Abdul Haqi Ibrahim
    ;
    Wong Yee Shian
    ;
    Sin Li Lee
    ;
    Oon Yoong Sin
    ;
    Oon Yoong Ling
    A novel sustainable hybrid system of photocatalytic fuel cell (PFC) and Fenton process is an alternative wastewater treatment technology for energy-saving and efficient treatment of organic pollutants. The electrons generated from PFC photoanode are used to produce H2O2 in the Fenton reactor and react with the in situ generation of Fe2+ from sacrificial iron for hydroxyl radical formation. In this study, the effect of different initial Amaranth dye concentrations on degradation and electricity generation were investigated. ZnO/Zn photoanode was prepared by anodizing method and characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). Results revealed that the maximum power density (9.53 mW/m2) and current density (0.0178 mA/m2) were achieved at 10 mg/L of Amaranth. The correlation between dye degradation, voltage output, and kinetic photocatalytic degradation were also investigated and discussed.
  • Publication
    Hybrid system of photocatalytic fuel cell and Fenton process for electricity generation and degradation of Reactive Black 5
    ( 2017-01-01)
    Noradiba Nordin
    ;
    Ho Li Ngee
    ;
    Ong Soon An
    ;
    Abdul Haqi Ibrahim
    ;
    Wong Yee Shian
    ;
    Lee Sin Li
    ;
    Oon Yoong Sin
    ;
    Oon Yoong Ling
    A novel hybrid system composed of a photocatalytic fuel cell (PFC) and Fenton reactor was developed with the aim to degrade the azo dye Reactive Black 5 (RB5) and generate electricity. Compared to previously established system of bioelectro-Fenton system, microbial fuel cell (MFC) system has significant challenge in the development and operation system. Therefore, PFC is used instead of MFC to generate electrons for the Fenton system. The effect of azo dye (RB5) on each PFC and Fenton reactor was investigated. The experimental results showed that maximum power output was achieved in the absence of dye in the Fenton reactor of this hybrid system. Furthermore, higher degradation efficiency of RB5 could also be observed in the PFC reactor in this hybrid system.
  • Publication
    Preliminary screening oxidative degradation methyl orange using ozone/ persulfate
    ( 2018)
    Nur Aqilah Razali
    ;
    Che Zulzikrami Azner Abidin
    ;
    Ong Soon An
    ;
    Fahmi Muhammad Ridwan
    ;
    Abdul Haqi Ibrahim
    ;
    Siti Nasuha Sabri
    ;
    Su Huan Kow
    The present study focusing on the performances of advanced oxidation process by using ozonation method towards Methyl Orange based on the efficiency of colour removal and Chemical Oxygen Demand (COD) removal. Factorial design with response surface methodology (RSM) was used to evaluate the interaction between operational conditions, such as pH, initial concentration, contact time and persulfate dosage to obtain the optimum range conditions using a semi-batch reactor. The range of independent variables investigated were pH (3-11), initial concentration (100-500mg/L), contact time (10-50min) and persulfate dosage (20-100mM) while the response variables were colour removal and COD removal of Methyl Orange. The experimental results and statistical analysis showed all the parameters were significant. Thus, from this findings, optimization of operational conditions that had been suggested from the ozone/persulfate RSM analysis were (pH 3, 100 mg/L, 50min, 60mM) that would be produced 99% Colour Removal and 80% COD Removal and help in promoting an efficient ozonation process. The effect list data that showed the most contributed effects to increase the percentages of colour removal were pH and persulfate dosage whereas the contact time and initial concentration had the highest positive effects on the COD removal. Other than that, the interaction between pH, contact time and persulfate dosage were found to be the most influencing interaction. Therefore the least influencing interaction was interaction between persulfate dosage and pH. In this study, the correlation coefficient value R2 for colour removal and COD removal of Methyl Orange were R2= 0.9976 and R2= 0.9924 which suggested a good fit of the first-order regression model with the experimental data.
  • Publication
    Influence of leachate matrix on oxidation performance of ozonation and aops
    ( 2022-12-15)
    Kow S.H.
    ;
    Fahmi Muhammad Ridwan
    ;
    Che Zulzikrami Azner Abidin
    ;
    Najihah Abdul Rashid
    ;
    Naimah Ibrahim
    ;
    Abdul Haqi Ibrahim
    ;
    Ong Soon An
    ;
    Wikurendra E.A.
    ;
    Handayani D.
    Landfill leachate is a critical environmental issue that should be adequately treated to prevent it from spreading to the environment. This study explored the influence of raw leachate matrix and treated leachate matrix on O3, O3/H2O2, and O3/PS performance. O3 and AOPs were conducted in a laboratory-scale batch reactor. The findings showed the degradation of p-cresol, COD, and humic substances was much slower in treated leachate matrix than in raw leachate matrix. However, color was found easier to remove in treated leachate. The results revealed a synergic effect between molecular O3 and dissolved organic matter in the raw leachate as the O3 performance was enhanced in the presence of raw leachate matrix, except for color removal. The highest degradation of more than 90% was achieved in O3 /H2 O2 to remove COD, p-cresol, and humic substances, although it is the most affected by the leachate matrix. This study provides vital insight into the notable performance of O3 /PS in color removal regardless of the influence of leachate matrix, suggesting that the sulfate radical-induced oxidation outperformed O3 and O3 /H2 O2 in reducing nitrogen-containing compounds.
      1
  • Publication
    Physial properties of nanocellulose extracted from empty fruit bunch
    ( 2020-12-29)
    Abdul Haqi Ibrahim
    ;
    Muhammad Faiq Abdullah
    ;
    Sam Sung Ting
    The high content of cellulose in lignocellulosic waste can be further utilized to produce nanocellulose (NCC). Conventional method of dissolving lignocellulosic waste in acid solvent is detrimental to the environment. Thus, a new method for utililizing lignocellulosic waste using environmental friendly solvent should be developed. NCC can be produced by dissolution of palm oil empty fruit bunch (EFB) in green solvent, natural deep eutectic solvent (NADES). In this study, palm oil EFB was used to produce NCC by dissolving in NADES and analysed for its characterization. Atomic force microscope (AFM) and transmission electron microscope (TEM) were used to evaluate the NCC’s morphology and dimension. Under AFM analysis, the average height of NCC produced was 15.574±3.658 nm while the obtained diameter is 53.179±24.237 nm. Using TEM analysis, the NCC produced was a needle-like particles with average diameter of 17.842 ± 2.859 nm, while the length is 185.486 ± 91.776 nm. Based on TGA results, NCC produced has a thermal stability at 224 °C. From the results obtained, the dissolution of cellulose in NADES is able to produce nanocellulose with similar properties as nanocellulose produced using conventional method.
      1
  • Publication
    Removal of palm oil mill effluent by using electro-oxidation process
    ( 2020-06-10)
    Che Zulzikrami Azner Abidin
    ;
    Sabri S.N.
    ;
    Fahmi Muhammad Ridwan
    ;
    Bashir Mohammed J.K.
    ;
    Abdul Haqi Ibrahim
    ;
    Nazerry Rosmady Rahmat
    ;
    Mohamed Hussein N.F.
    ;
    Mahiran N.Q.
    Wastewater includes the Palm Oil Mill Effluent (POME) that gives adverse impacts to the environment especially for water pollution when it is not treated properly. POME are known to have various types of liquids, residual oil and suspended solid as it has very high strength waste in its untreated form. Although conventional biological processes are normally efficient for the degradation of pollutants occurring in wastewater, most of these compounds are not effectively removed. As a result, further treatment is needed to meet more stringent discharge standards of Department of Environment (DOE). This research focused on treatment of POME by using electro-oxidation process (EO). It was done to identify the performance of EO process for colour, chemical oxygen demand (COD), suspended solids (SS), ammoniacal-nitrogen (NH3-N), and turbidity removal as well as the relative effects of different operational parameters such as pH, type of electrodes and contact time. The pH was varied from 3 to 11, the electrodes were aluminium and iron and the contact time was from 0 to 120 min. The most suitable pH, contact time and type of electrode were pH 3, 120 min and Al electrode.
      1  16
  • Publication
    Treatment of O3 with Na2S2O8 by ANOVA Interpretation towards degradation of azo dye
    ( 2018-12)
    Noor Ashikin Mohd Razali
    ;
    Che Zulzikrami Azner Abidin
    ;
    Ong Soon An
    ;
    Fahmi Muhammad Ridwan
    ;
    Abdul Haqi Ibrahim
    ;
    S. N. Sabri
    ;
    S.H. Kow
    ;
    S.A. Malik
    Advanced oxidation processes (AOPs) especially ozonation method is widely studied in the wastewater treatmentfield. In this study, it highlighted about threemainenvironmental issues in the world such as1) proposing a method to overcome uncontrollable effluents from textile industriesby using syntheticdyes; 2)creating an improvementof previous conventional method; 3) reduced process time by using statistical approach.To address with this issue, analysis of variance (ANOVA)from Response Surface Methodology (RSM)to study the performance of O3with the help of persulfate (Na2S2O8) for treating one of azo dyes which is Reactive Green 19.This is due to there isvery limited work done by statistical analysis on this study. Hence, ANOVA data would proposestatistical models tailored to the data in 2D and 3D contour plots by knowing the three influenced parameterswhich is pH(6 to 10),persulfate concentration (30to 70mM) and contact time (4 to 20 min). Through the analysis, the result can be concluded that improvement of ozonation process with persulfate (Na2S2O8) werestatistically significant after allinteractive effectsgave a positive feedback towards responses.The obtained optimum conditions included a persulfate concentration (49mM), initial pH (8.89) and contact time (18 min) with fixed initial concentration 100mg/L. The experimental results were corresponded well with predicted models colour removal rates which is 99%.
      1  9
  • Publication
    Reactive Green 19 degradation using O3/S2 O8(2-) process: Intermediates and proposed degradation pathway
    ( 2022-01-01)
    Mohd Razali N.A.
    ;
    Che Zulzikrami Azner Abidin
    ;
    Ong Soon An
    ;
    Fahmi Muhammad Ridwan
    ;
    Abdul Haqi Ibrahim
    ;
    Siti Nasuha Sabri
    ;
    Kow Su Huan
    ;
    Safya Abdul Malik
    The massive drawbacks of conventional wastewater treatment have led to a demand investigation about new advanced wastewater treatment technology. The issue can be addressed via advanced oxidation processes (AOPs) as witnessed recently. Therefore, the objective of this study was to investigate the performance of ozone/persulfate ((Formula presented.)) process to assess its use as potential degradation of diazo dye which is Reactive Green 19 (RG19). In this work, efficiency, color, and COD removal were investigated over a range of initial pH, persulfate concentration and initial concentration of RG19. The amount of sodium persulfate ((Formula presented.)) was varied at different levels (20–100 mM) relative to precursor radical to assess the optimum usage of persulfate concentration for RG19 degradation. Evidence that RG19 could degrade efficiently had occurred at 100 mg/L, initial pH 9, 60 mM persulfate concentration was identified by FTIR and GC/MS analysis. The results revealed that RG19 could achieve complete decolorization easily as compared to mineralization. In addition, RG19 degradation pathway gave the best representation of level degradation. The GC/MS and FTIR results exhibited the proposed RG19 degradation pathway that involved the characteristic of sulfonic group, (Formula presented.) accompanied with (Formula presented.) became as an indicator of their structure broken down one by one. The degradation products such as oxalic acid, formic acids and others were analyzed and finally converted to carbon dioxide and water. The diazo dye structure itself aided with (Formula presented.) has its superior characteristic as an aid for the efficient degradation process.
      1
  • Publication
    Recovery of nano-lignin from anaerobic treated palm oil mill effluent (AT-POME)
    ( 2020-06-10)
    Ismail H.S.
    ;
    Abdul Haqi Ibrahim
    ;
    Che Zulzikrami Azner Abidin
    ;
    Fahmi Muhammad Ridwan
    Lignin is the main polymers in woody biomass aside cellulose and hemicelluloses Recently, nano-lignin is gaining importance due to the increasing demand for bio-based and bio-active nanomaterial fillers for many applications such as in composite and textile industries. Palm oil mill effluent (POME) is the main wastewater produce by palm oil mills. Anaerobically treated (AT-POME) contains high soluble lignin due to the anaerobic digestion of cellulosic material in POME. Nano-lignin was precipitated by adjusting the initial pH of AT-POME during the sonication process. Sulfuric acid (H2SO4), nitric acid (HNO3), hydrochloric acid (HCl) and phosphoric acid (H3PO4) were used to adjust the initial pH of AT-POME. Result shows that sulfuric acid was the most suitable acid to be used as it could recovered 96% of the soluble lignin in AT-POME. The presence of ultrasonic during the precipitation process had reduced the size to 383.4 nm. The optimum operating parameter for lignin recovery is at pH 4 using sulfuric acid and sonicated at 80 watts for 15 minutes. This study shows that sonication could reduce the size of precipitated lignin from AT-POME. In addition, removal of lignin from AT-POME also reduced the COD content of AT-POME.
      1  17
  • Publication
    Assessment of heavy metal pollution in sediments and in Phragmites Australis from Argeş River
    ( 2022-01-01)
    Marcu, Ecaterina
    ;
    Deák, György
    ;
    Ciobotaru Irina-Elena
    ;
    Burlacu, Iasmina-Florina
    ;
    Tociu, Carmen
    ;
    Abdul Haqi Ibrahim
    There are several species of macrophyte which have the ability to absorb heavy metals from water and, therefore, are used to retain and remove them. In the present paper, the concentrations of heavy metals (Zn, Cu, Ni, Cd, Pb and Cr) were investigated in sediment samples from the Argeș River and their potential transfer from sediments to Phragmites australis was evaluated. The extent of sediment pollution with heavy metals and the potential risk to the aquatic environment were estimated based on the following indexes: bioaccumulation, geoaccumulation, ecological risk, translocation, contamination, etc. The metals concentrations in the analyzed sediments were, generally, below the limits of national legislation.
      8