Nabilah Aminah Lutpi
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Nabilah Aminah Lutpi
Official Name
Nabilah Aminah, Lutpi
Alternative Name
Lutpi, N. A.
Lutpi, Nabilah A.
Aminah, L. Nabilah
Lutpi, Nabilah Aminah
Aminah Lutpi, Nabilah
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Scopus Author ID
55793936400
Researcher ID
M-9374-2019

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  • Publication
    Investigation of Biosand Filter (BSF) on the Treatment Performance of Industrial Latex Wastewater
    ( 2024-01-01)
    Najihah Abdul Rashid
    ;
    Abdul Latif Abdul Rani
    ;
    Mohd Firdaus Omar
    ;
    Zainol N.A.
    ;
    Salwa Mohd Zaini Makhtar
    ;
    A B Wahab M.
    ;
    Nabilah Aminah Lutpi
    ;
    Farrah Aini Dahalan
    Biosand Filters (BSF) has great potential to improve the water quality. BSF is used extensively in the treatment of drinking water in rural areas because it is affordable, simple to use, and has a high removal efficiency. This study used actual latex effluent to examine the effectiveness of SBR. The growth of the biolayer in the BSF is also observed. This study analyzes consistent and stable results for COD, DO and NH4-N+. With removal performance ranging from 87 % to 99 %. DO value for BSF varied from lowest value of 1.5 mg/L to 8mg/L. Overall, the BSF was capable of producing treated water for water reclamation.
  • Publication
    Discerning the effect of operating conditions on the improvement of up-flow constructed wetland-microbial fuel cell performance in treating mixed azo dyes wastewater and bioelectricity generation
    ( 2024-06-01)
    Teoh T.P.
    ;
    Ong Soon An
    ;
    Ho Li Ngee
    ;
    Wong Yee Shian
    ;
    Nabilah Aminah Lutpi
    ;
    Tan S.M.
    ;
    Ong Y.P.
    ;
    Yap K.L.
    This study assessed the effect of implementing multiple circuit connections and operating parameters (hydraulic retention time (HRT), organic loading rate (OLR), and external resistance) on the improvement of up-flow constructed wetland-microbial fuel cell (UFCW-MFC) in treating the mixed azo dyes wastewater and bioelectricity generation. The multiple-circuits UFCW-MFC facilitated the organic substrate degradation, which improved the removal efficiency of dyes by 8% and COD by 7%, as well as power production by 6.5 times, compared to single-circuit UFCW-MFC. The prolonged HRT from 1 to 3 d extended the interaction time between the pollutants and microbes, which further enhanced the removal efficiency of dyes by 9% and COD by 6%. The decrease in power generation by 1.3 times could be ascribed to the lower OLR at a higher HRT (0.864–0.288 g COD/d when HRT extended from 1 to 3 d) as the utilization of electrons was prioritized for decolorization compared to bioelectricity generation. The increase in OLR (0.288 to 0.754 g COD/d) with the same HRT (3 d) exhibited an improvement of 4% in decolorization and 2.4 times in power generation. This could be attributed to more electron production from the higher COD removal. The lower external resistance benefited the UFCW-MFC performance, where the best performance was obtained at 200 Ω as it approached the internal resistance (150 Ω).
  • Publication
    Biohydrogen production from palm oil mill effluent with Moringa Oleifera seeds as support carrier in attached growth system
    ( 2020-06-10)
    Hamid W.Z.W.A.
    ;
    Nabilah Aminah Lutpi
    ;
    Wong Yee Shian
    ;
    Ong Soon An
    ;
    Malek M.A.
    Biohydrogen production by dark fermentation is one of the attracting alternatives for renewable energy in worldwide. By employing immobilized cells, hydrogen production and cell density could be improved. This study aimed to investigate the efficiency of Moringa Oleifera Seeds (MOS) immobilized cells in enhancing the biohydrogen production using repeated batch fermentation under mesophilic condition, 37°C. The efficiency of MOS as support carrier, effect of the initial pH (5.0-7.0) and performance of raw and diluted Palm Oil Mill Effluent (POME) using MOS immobilized cells were investigated using anaerobic sludge as inoculums. The cumulative hydrogen production results were fitted into a modified Gompertz equation to find the maximum hydrogen production. MOS immobilized cells was more efficient in producing hydrogen compare to suspended cells (without MOS). The optimal pH obtained using MOS immobilized cells was found to be at pH 6 using raw POME with the maximum hydrogen production (Hm) of 122 mL, the maximum hydrogen production rate (Rm) of 39.0 mL/h, and 560 ppm of hydrogen concentration.
  • Publication
    Caffeine-containing wastewater treatment and bioelectricity generation in up-flow constructed wetland-microbial fuel cell: Influence of caffeine concentration, operating conditions, toxicity assessment, and degradation pathway
    ( 2022-04-01)
    Teoh T.P.
    ;
    Ong Soon An
    ;
    Ho Li Ngee
    ;
    Wong Yee Shian
    ;
    Nabilah Aminah Lutpi
    ;
    Oon Y.L.
    ;
    Tan S.M.
    ;
    Ong Y.P.
    ;
    Yap K.L.
    This study explored the potential of caffeine being utilized as the fuel for the microbes to produce electrons for electricity generation in up-flow constructed wetland-microbial fuel cell (UFCW-MFC). The effect of caffeine concentration was investigated to identify the availability of UFCW-MFC in the conversion of caffeine to electrons for electricity production; and the effect of operating conditions (circuit connection, supplementary aeration, and plant) was studied to determine their significance in the treatment of caffeine containing wastewater. The UFCW-MFC achieved about 98% of decaffeination efficiency regardless of caffeine concentration; while a decrease of efficiency was observed when UFCW-MFC operated without supplementary aeration and plant (~93%). COD removal efficiency decreased correspondingly to the increase of caffeine concentration, which could be contributed by the higher concentration of caffeine and its intermediates. The degradation pathway of caffeine in UFCW-MFC was explored in this study. It was remarkable that ammonia was produced and converted to ammonium ions during caffeine catabolism. Supplementary aeration and macrophyte play a crucial role in removing excess caffeine, intermediates as well as accumulated ammonium ions. The toxicity assessment revealed that caffeine was degraded to less toxic products. The closed circuit connection not only contributed to electricity generation but also enhanced the caffeine and COD removal efficiency by 4.6 and 5.4% in the anaerobic region, respectively. The increase of voltage and maximum power density from phase I to phase IV indicated that caffeine could be converted to electrons by the anaerobes for electricity production.
  • Publication
    Biodiesel wastewater treatment by coagulation process for chemical oxygen demand reduction
    ( 2021-02-23)
    Lee C.M.
    ;
    Nabilah Aminah Lutpi
    ;
    Wong Yee Shian
    ;
    Ong Soon An
    ;
    Malek M.A.
    Biodiesel wastewater contained residual of alkali catalyst, soap and glycerol which causing in high chemical oxygen demand (COD). The optimum conditions of aluminium sulphate (alum), poly-aluminium chloride (PAC) and laterite soil (silifloc) in the coagulation of biodiesel wastewater for COD reduction were explored through a sequence of studies including the effects of pH and dosage of coagulants. Coagulation process were conducted in the fixed conditions of mixing rate, mixing time, settling time and anionic polymer aid as flocculant. Silifloc could treat acidified biodiesel wastewater with 32.35 % at pH 2 and dosage of 4000ppm, the highest among these three coagulants. This was due to the silifloc rich in silica component had a higher rate law at sufficient dosage and had an effective range of at around pH 2. Whereas, PAC had a highest efficiency with 61.58% at pH 6 and dosage of 1100ppm in coagulation of raw biodiesel wastewater due to its solubility and elements of higher ions content. On other hand, alum had a moderate performance in acidified and raw wastewater with 26.42 % at pH 6 and 57.63 % at pH 4, respectively.
  • Publication
    Influence of Glucose Supplementation on the Organic Removal and Biomass Growth in Anaerobically Digested Vinasse (AnVE) by Using Aerobic Sequencing Batch Reactor (SBR)
    ( 2022-01-01)
    Kee W.C.
    ;
    Wong Yee Shian
    ;
    Ong Soon An
    ;
    Nabilah Aminah Lutpi
    ;
    Sam Sung Ting
    ;
    Audrey Chai Yee Chieh
    ;
    Deák G.
    This paper analyses the effect of glucose supplementation in the treatment of anaerobically digested vinasse (AnVE) through reduction performance and biomass growth by using aerobic SBR system. The result revealed that the COD and ammonium reduction with the addition of glucose supplementation (65.3 ± 6.0 and 30.0 ± 5.5%) was greater than the reactor without glucose supplementation (23.6 ± 10.8 and 18.7 ± 6.0%). This can be due to the additional glucose as the carbon source for microbe metabolism nutrients. The biomass growth in the reactor with glucose supplementation increased rapidly over time, while there was no obvious biomass growth shown in the reactor without the addition of glucose. It is because glucose supplementation increased biomass accumulation in biomass production. The increment of biomass in the reactor with glucose supplementation can be further explained by the F/M ratio and biomass yield. The F/M ratio reduced when the biomass growth increased. Thus, the biomass yield started to decrease after the operation in week 2, until it reached maximum biomass growth. Therefore, it concluded that the addition of glucose supplementation in the treatment of AnVE showed a positive effect on the removal performance and biomass growth by using aerobic SBR.
  • Publication
    Kinetic model discrimination on the biogas production in thermophilic co-digestion of sugarcane vinasse and water hyacinth
    ( 2022-08-01)
    Audrey Chai Yee Chieh
    ;
    Wong Yee Shian
    ;
    Ong Soon An
    ;
    Nabilah Aminah Lutpi
    ;
    Sam Sung Ting
    ;
    Kee W.C.
    ;
    Eng K.M.
    Co-digestion between sugarcane vinasse (Vn) and water hyacinth (WH) at various mixing ratios of 0:1, 1:0, 1:3, 3:1, and 1:1 was carried out under thermophilic conditions (55 Â°C) for 60 days. The effect of various mixing ratios on the pH changes, soluble chemical oxygen demand (sCOD) reduction, and cumulative biogas production was investigated. The first order, modified Gompertz, and logistic function kinetic models were selected to fit the experimental data. Model discrimination was conducted through the Akaike Information Criterion (AIC). The study revealed that co-digestion shows better performance compared to the mono-digestion of both substrates. Vn:WH mixing ratio 1:1 with inoculum to substrate ratio (ISR) of 0.38 g VSinoculum/g VSsubstrate is the most favorable ratio, achieving sCOD reduction efficiency and cumulative biogas production of 71.6% and 1229 mL, respectively. Model selection through AIC revealed that ratio 1:1 was best fitted to the logistic function kinetic model (R2 = 0.9897) with Ym and K values of 1232 mL and 31 mL/day, respectively.
  • Publication
    Insights into modified sequencing batch reactor for the treatment of sugarcane vinasse: role of recirculation process
    ( 2022-12-01)
    Kee W.C.
    ;
    Wong Yee Shian
    ;
    Ong Soon An
    ;
    Nabilah Aminah Lutpi
    ;
    Sam Sung Ting
    ;
    Audrey Chai Yee Chieh
    ;
    Ng H.H.
    The application of the recirculation process in the biological wastewater treatment process was considered as an effective approach in promoting biomass retention and mixing intensity, enhancing the performance of treating wastewater. In this study, a recirculated sequencing batch reactor (R-SBR) was developed in the treatment of anaerobically digested vinasse. The comparative study of the conventional sequencing batch reactor (without recirculation process) and R-SBR was determined through the treatment performances and kinetic studies. The chemical oxygen demand and ammonium reduction of R-SBR (52.5 ± 8.0% and 31.7 ± 7.9%) were higher than the conventional sequencing batch reactor (31.8 ± 4.3% and 17.3 ± 5.3%) at the feed flow rate of 1.0 L/day. This result revealed that the enhancement of the mass transfer between activated sludge and substrate could improve the biodegradation of the R-SBR. Moreover, the effect of feed flow rate as a significant factor to achieve effective biodegradation was determined in the R-SBR system. The maximum chemical oxygen demand reduction (63.0%) and ammonium reduction (41.3%) of R-SBR were achieved at the lowest feed flow rate (1.0 L/day) from 1.0 to 5.0 L/day. The chemical oxygen demand reduction of R-SBR could be explained by using pseudo-first-order kinetics with rate constant (k1) (0.0356 day−1). The kinetic study revealed that the R-SBR achieved the most effective performance at the lowest feed flow rate. Thus, the recirculation process as a feasible process improved the treatment performance in the R-SBR system at low feed flow rate.
  • Publication
    Effect of operating temperature in the anaerobic degradation of palm oil mill effluent: Process performance, microbial community, and biokinetic evaluation
    ( 2022-09-01)
    Audrey Chai Yee Chieh
    ;
    Wong Yee Shian
    ;
    Ong Soon An
    ;
    Nabilah Aminah Lutpi
    ;
    Sam Sung Ting
    ;
    Kee Wei Chin
    This research paper presents the thermophilic anaerobic digestion (TAD) of palm oil mill effluent (POME), which is an extension of a previously conducted mesophilic anaerobic digestion (MAD) study. An anaerobic suspended growth closed bioreactor was operated at various hydraulic retention times (HRT) between 24 and 8 days. The effect of operating temperature on the performance, microbial identification, and biokinetic coefficients was evaluated. Performance was quantified by the production of biogas and the chemical oxygen demand (COD) reduction efficiency. Biogas production in TAD (64.56 L/day) was higher than MAD (46.76 L/day). A higher COD reduction efficiency was also achieved in TAD (90.90%) compared to MAD (89.66%). Other than that, more species of methanogenic bacteria were also identified in TAD through 16S rDNA. Furthermore, the modified Monod model implemented in the biokinetic evaluation revealed that higher values of maximum substrate utilization rate (rx,max) and maximum specific biomass growth rate (μmax) contributed to the better performance in TAD. The high rx,max value explains the higher COD reduction efficiency obtained in TAD. The critical retention time (θC) in TAD is also higher than MAD, making it less prone to the washout of active microbes when operating near low retention times. Additionally, TAD also achieved higher methane yield (YCH4) as opposed to MAD. The extension study concluded that the TAD of POME demonstrated improved performance in terms of biogas production and COD reduction when evaluated against the previously conducted MAD.
  • Publication
    Photocatalytic Degradation of Sugarcane Vinasse Using ZnO Photocatalyst: Operating Parameters, Kinetic Studies, Phytotoxicity Assessments, and Reusability
    ( 2022-02-01)
    Kee W.C.
    ;
    Wong Yee Shian
    ;
    Ong Soon An
    ;
    Nabilah Aminah Lutpi
    ;
    Sam Sung Ting
    ;
    Audrey Chai Yee Chieh
    ;
    Eng K.M.
    Abstract: Photocatalytic degradation performance is highly related to optimized operating parameters such as initial concentration, pH value, and catalyst dosage. In this study, the impact of various parameters on the photocatalytic degradation of anaerobically digested vinasse (AnVE) has been determined through decolourization and chemical oxygen demand (COD) reduction efficiency using zinc oxide (ZnO) photocatalyst. In this context, the application of photocatalytic degradation in treating sugarcane vinasse using ZnO is yet to be explored. The COD reduction efficiency and decolourization achieved 83.40% and 99.29%, respectively, under the conditions of 250 mg/L initial COD concentration, pH 10, and 2.0 g/L catalyst dosage. The phytotoxicity assessment was also conducted to determine the toxicity of AnVE before and after treatment using mung bean (Vigna radiata). The reduction of root length and the weight of mung bean indicated that the sugarcane vinasse contains enormous amounts of organic substances that affect the plant's growth. The toxicity reduction in the AnVE solution can be proved by UV–Vis absorption spectra. Furthermore, the catalyst recovery achieved 93% in the reusability test. However, the COD reduction efficiency and decolourization were reduced every cycle. It was due to the depletion of the active sites in the catalyst with the adsorption of organic molecules. Thus, it can be concluded that the photocatalytic degradation in the treatment of AnVE was effective in organic degradation, decolorization, toxicity reduction and can be reused after the recovery process. Graphical abstract: [Figure not available: see fulltext.].