Tengku Nuraiti Tengku Izhar
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Preferred name
Tengku Nuraiti Tengku Izhar
Official Name
Tengku Nuraiti, Tengku Izhar
Alternative Name
Tengku Izhar, Tengku Nuraiti
Tengku Izhar, T. N.
Izhar, T. N.T.
Izhar, T. Nuraiti T.
Izhar, T. N.Tengku
Main Affiliation
Scopus Author ID
57189071410
Researcher ID
AAY-2768-2021

Research Output
Now showing 1 - 3 of 3
  • Publication
    Iron removal efficiency in synthetic Acid Mine Drainage (AMD) treatment using peat soil
    ( 2022-01-01)
    Mohd Syazwan Mohd Halim
    ;
    Abdul Haqi Ibrahim
    ;
    Tengku Nuraiti Tengku Izhar
    ;
    Suhaina Ismail
    ;
    Ku Esyra Hani Ku Ishak
    ;
    Moncea Andreea
    Acid mine drainage (AMD) formation is due to the sulfide minerals reaction either chemically or biologically when exposed to atmospheric conditions. The AMD formation often occurred in the region involved with anthropogenic activities, including mining, agricultural plantation, urban development and logging. Treatment of AMD is a challenging part of most mining operations around the world. Selection of method treatment is crucial depending on the area’s geological, mineralogical, topography and AMD characteristic. There are two types of method treatment; active and passive treatment method. In this study, passive treatment method was adopted; which is successive alkalinity producing system (SAPS). The study aims to analyze effect of variable parameters on iron (Fe) concentration and propose optimum operating condition for AMD treatment. Peat soil and limestone aggregate was used as treatment media in treatment tank. Synthetic AMD was formulated using sulphuric acid (H2SO4) and iron sulfate (FeSO4) to represent actual AMD. Once the synthetic AMD was introduced, water samples were collected and analyzed using UV–Vis test after 6 to 48 h’ retention time. Based on the analysis, the proposed methodology has successfully reduced more than 85% iron content only after 6 h of retention time. The maximum Fe removal percentage recorded was 95%, using the higher peat soil depth configuration. The statistical analysis results show that the optimum operating condition for SAPS with high Fe removal is using high peat soil depth. Experiments with higher peat soil depth provide satisfactory results in treating the high initial Fe concentration regardless of the retention time for the AMD treatment.
      4  2
  • Publication
    Peat soil for synthetic acid mine drainage treatment: Characteristic study
    ( 2020-12-29)
    Halim, Mohd Syazwan Mohd
    ;
    Abdul Haqi Ibrahim
    ;
    Tengku Nuraiti Tengku Izhar
    ;
    Ismail S.
    ;
    Mohamed Jaafar Z.F.
    Acid Mine Drainage (AMD) is an untreated outflow of acidic water from metal or coal mines. Improper treatment of the harmful effluent causes major environmental concern and remains as an unsolved problem for mining operators worldwide. The untreated AMD contains high concentration of several heavy metals despite low pH level. Iron (Fe) is most dominant element of heavy metal spotted in the AMD water and must be filtered and treated before being released to open water bodies. Current practises by the industries adopted two categories of AMD treatment methods, namely active and passive treatments. Passive treatment method was adopted into this study by using successive alkalinity producing system (SAPS) to reduce Fe concentration in the AMD. Strict regulations by mine operators to acquire on-site AMD, led to use of synthetic AMD. Peat soil was introduced as organic substrate treatment media, as compared to common materials used such as mushroom spent, wood shaving and animal manure. In this research the peat soil was characterized and its effectiveness to filter the Fe content was assessed using laboratory scale studies. Prior to the test, the natural peat soil was analyzed via Scanning Electron Microscopy (SEM) analysis, Energy Dispersive X-Ray (EDX) analysis and carbon-hydrogen-nitrogen-sulphur (CHNS) element analysis. After going through laboratory tests, the peat soil residues were assessed through SEM-EDX analysis to determine the trapped Fe content. The natural peat soil does not contain any Fe substance. However, the analyzed peat soil residues showed that, approximately one to four percent of the Fe were found in the peat soil residues. The use of the peat soil for the AMD treatment in SAPS method is applicable and can be used as alternative organic substrate for treatment media.
      2  13
  • Publication
    Effect of organic substrate thickness on synthetic acid mine drainage (AMD) treatment
    ( 2023-01-01)
    Halim M.S.M.
    ;
    Abdul Haqi Ibrahim
    ;
    Tengku Nuraiti Tengku Izhar
    ;
    Ismail S.
    ;
    Jabit N.A.
    ;
    Ishak K.E.H.K.
    A Successive Alkalinity Producing System (SAPS) employing an organic substrate of peat soil and limestone aggregate was investigated for the restoration of synthetic Acid Mine Drainage (AMD). The composition, carbon content, and particle size distribution of the peat soil and limestone were determined by characterisation. Iron sulphate (FeSO4) and sulfuric acid were used to create synthetic AMD (H2SO4). The synthetic AMD was acidic (pH4.0) and had a concentration of iron (Fe) of 100 ppm. A laboratory scale physical model of a tailing pond was created. The synthetic AMD was introduced and filtered through the media. Following that, samples of effluent water were collected and examined to ascertain the pH level. Furthermore, the Fe concentration was determined using a UV-Vis test with a retention duration ranging from 6 to 48 hours. After only 6 hours of retention time, the new technology successfully reduced more than 85% iron concentration and neutralised pH. These findings demonstrated that a combination of peat soil and limestone of adequate thickness might potentially be recommended as an additional treatment media for treating AMD with SAPS.
      1