Mohd Hafizuddin Muhamad

National University of Malaysia

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Hassimi Abu Hasan

National University of Malaysia

Siti Rozaimah Sheikh Abdullah

National University of Malaysia

Siti Nur Hatika Abu Bakar

National University of Malaysia

Abu Bakar Mohamad

National University of Malaysia

Setyo Budi Kurniawan

National University of Malaysia

N‘

Nur ‘Izzati Ismail

National University of Malaysia

Abdul Amir H. Kadhum

University of Karbala

Rakmi Abdul Rahman

National University of Malaysia

Sabah J. Mohammed

University of Baghdad

Mohanad J. M‐Ridha

University of Baghdad

Cooperative Institutions

National University of Malaysia

University of Baghdad

Gheorghe Asachi Technical University of Iași

National Institutes of Biotechnology Malaysia

Universiti Putra Malaysia

University of Technology Malaysia

University of Malaya

University Kebangsaan Malaysia Medical Centre

Universiti Teknologi MARA

Nahrain University

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Performance of pilot Hybrid Reed Bed constructed wetland with aeration system on nutrient removal for domestic wastewater treatment

Environmental Technology & Innovation (2020)

Omar Hamed Jehawi Siti Rozaimah Sheikh Abdullah Setyo Budi Kurniawan Nur ‘Izzati Ismail Mushrifah Idris

Constructed wetland

10.1016/j.eti.2020.100891

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Citations (78)

Biopolishing of Domestic Wastewater Using Polyvinyl Alcohol – Supported Biofilm of Bacterial Strain <i>Bacillus velezensis</i> Isolate JB7

Journal of Ecological Engineering (2023)

Muhammad Faidsyafiq Othman Hassimi Abu Hasan Mohd Hafizuddin Muhamad Badiea S. Babaqi

Water pollution occurs due to the discharge of domestic waste mixed with residential, industrial, commercial, and agricultural wastewater.Conventional water treatment methods using aerobic/anaerobic methods can cause problems with the production of high green gases and result in the greenhouse effect.Microbial-based domestic sewage treatment technology using polyvinyl alcohol biofilm supporting media was introduced as an alternative measure to overcome this problem.The objective of the study was to determine the performance of polyvinyl alcohol beads in polishing domestic wastewater.In this study, the bacterium Bacillus velezensis isolate JB7 was used together with PVA as a raw material to treat domestic sewage wastewater more efficiently and stably.The results of the study show the effectiveness of domestic wastewater treatment in several factors such as pH value, chemical oxygen demand, phosphorus, nitrate, nitrite, ammonia, and total suspended solids.As conclusion, domestic wastewater treatment methods using polyvinyl alcohol beads are seen to be effective, reducing the use of sewage waste plant construction sites and able to avoid the use of non-recyclable materials such as plastics and synthetics.

Polyvinyl Alcohol

Strain (injury)

10.12911/22998993/165780

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Effective Iron-accumulating Bacteria Isolated from Chemical Laboratory Drainage for Iron Removal

Journal of Ecological Engineering (2021)

Hassimi Abu Hasan Nuradila Jamal Siti Rozaimah Sheikh Abdullah Siti Nur Hatika Abu Bakar Mohd Hafizuddin Muhamad

Improperly treated heavy metal wastewater discharged into water sources could cause a serious issue for the environment.The aim of this study was to bioaccumulate iron (Fe) using native bacteria isolated from the laboratory drainage water containing a high concentration of iron.The experiment was conducted in 250 mL conical flasks containing 150 mL Fe solution in concentrations of 25, 100, and 250 mg/L, respectively.Approximately 10% of bacteria inoculum was cultivated in each Fe concentration for 24 and 48 hours.The results showed that Pseudomonas hibiscicola was identified as an effective iron-accumulating species of bacteria.The species could remove Fe up to 82% (25 mg/L), 77.8% (100 mg/L) and 32% (250 mg/L).This promising result indicates that the native bacteria isolated from the environment pose a great potential for the remediation of wastewater containing iron.

Iron bacteria

10.12911/22998993/131030

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Citations (1)

On-Site Treatment of Recycled Paper Wastewater Targeting Adsorbable Organic Halides (Aox) Using a Pilot-Scale Multimedia-Sequencing Batch Biofilm Reactor

Mohd Hafizuddin Muhamad Siti Rozaimah Sheikh Abdullah Hassimi Abu Hasan Nur ‘Izzati Ismail

Download This Paper Open PDF in Browser Add Paper to My Library Share: Permalink Using these links will ensure access to this page indefinitely Copy URL Copy DOI

Scale-up

Sequencing batch reactor

10.2139/ssrn.4776847

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Managing Bisphenol A Contamination: Advances in Removal Technologies and Future Prospects

Water (2023)

Hassimi Abu Hasan Mohd Hafizuddin Muhamad Setyo Budi Kurniawan Junaidah Buhari Osama Husain Abuzeyad

Increasing levels of bisphenol A (BPA), classified as an endocrine-disrupting compound, in the environment have raised concerns because of its detrimental impact on human and animal health. BPA has been detected in soil and water and even as a volatile compound in the air primarily because of improper disposal and its extensive use in the production of polycarbonate plastics and epoxy resins. This review comprehensively surveyed recent research focusing on the removal of BPA from water through physicochemical and biological treatments, covering articles published from 2002 to 2023. A range of conventional and non-conventional methods employed for BPA removal is examined, and their limitations in completely degrading BPA in water are acknowledged. Hybrid or integrated treatment systems have been explored, capitalising on the distinctive removal potential of various treatment processes. The literature spanning from 2002 to 2023 underscores the efficacy of hybrid or integrated treatment systems in yielding promising results for BPA removal from water. Furthermore, future directions for BPA removal are outlined, and advancements in treatment technologies developed over the past decade are incorporated.

10.3390/w15203573

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Citations (13)

Revolutionizing wastewater treatment with microalgae: Unveiling resource recovery, mechanisms, challenges, and future possibilities

Ecological Engineering (2023)

Hassimi Abu Hasan Mohd Hafizuddin Muhamad Bin Ji Nur Aisyah Nazairi Koh Weng Jiat

Resource Recovery

Circular Economy

Adaptability

10.1016/j.ecoleng.2023.107117

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Citations (15)

Biofilters as Alternative Method for Ammonia Removal in Water Treatment Plant

International Journal of Engineering & Technology (2019)

Hassimi Abu Hasan Mohd Hafizuddin Muhamad Nurul Nadia Mohd Sabri Siti Rozaimah Sheikh Abdullah

High level of ammonia concentration in raw water have led to the temporary shutdown of water treatment plant at certain areas of Malaysia especially in Selangor state. The contamination occurred as a result of the impact of industrial activities, agricultural activities and disposal of rubbish into the river. This study was carried out to determine the performance of slow sand biofilters (BioSSF) as an alternative method for the ammonia removal in drinking water treatment plant. Two factors i.e., empty bed contact time (EBCT) (5 to 15 minutes) and ammonia concentration (3 to 5 mg/L) were investigated. The results showed the best ammonia removal percentage was at 15 minutes EBCT with removal percentage of 98.3%. Increasing the ammonia concentration in raw water reduced the BioSSF performance, but the ammonia removal was still below the regulated limits (< 1.5 mg/L). In addition, the BioSSF also have a capability to reduce the turbitidy, chemical oxygen demand, colour and suspended solid. Thus, it proved the BioSSF can be an alternative method for the current conventional water treatment specially to remove the ammonia.Â Â

Biofilter

10.14419/ijet.v8i1.2.24911

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Citations (4)

Potential of Using Dual-Media Biofilm Reactors as a Real Coffee Industrial Effluent Pre-Treatment

Water (2022)

Hassimi Abu Hasan Dheenesh Sai Annanda Shanmugam Siti Rozaimah Sheikh Abdullah Mohd Hafizuddin Muhamad Setyo Budi Kurniawan

The coffee processing industry produces toxic and low biodegradable effluent, which can pollute water bodies. A pre-treatment study on coffee effluent using a dual-media biofilm reactor (DM-BR) containing sand and Hexafilter (HEX) was conducted alongside a control biofilm reactor (C-BR) containing sand media. The novelty of this study lies in the use of dual media in biofilm reactor (DM-BR) for real coffee effluent treatment, where these processes were used individually in previous studies. The performance of DM-BR and C-BR in treating coffee effluent were investigated at different hydraulic retention times (HRTs), 24, 48 and 72 h, and the degrading bacteria were identified. Both biofilm reactors were inoculated with a recycled paper mill-activated sludge and acclimatised for 97 days. The DM-BR displayed the highest removal of chemical oxygen demand (COD) and NH4+-N at 47% and 38%, respectively, within 48 h of HRT, whereas colour and tannin–lignin reached maximum average removal of 21% and 29%, respectively, at 24 h of HRT. The combination of sand and HEX media in a system showed COD and NH4+-N removal improvement at 48 h of HRT and encouraged a variety of bacterial species growth. Bacterial characterisation analysis revealed Proteobacteria to be dominant.

Hydraulic retention time

10.3390/w14132025

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Citations (11)

Physico-Chemical and Biological Techniques of Bisphenol a Removal in Aqueous Solution

Journal of Ecological Engineering (2021)

Donald Anak Juan Hassimi Abu Hasan Mohd Hafizuddin Muhamad Siti Rozaimah Sheikh Abdullah Siti Nur Hatika Abu Bakar

Bisphenol A (BPA) is widely used in everyday life and can be found everywhere, including in the ecosystem and manufactured goods.BPA not only has a negative impact in low doses, but it also has biological and pathophysiological implications for obesity and hormonal effects.The objectives of this paper were to review the BPA removal technology and the factors that influence the BPA removal based on biological methods.BPA elimination from water is crucial for environmental protection, in terms of biological treatment.In addition, the future prospect of biological removal of BPA indicates that effective microorganism cultures could disturb the pathogen growth and increase composition rate of BPA.The biological technology by the implementation of microorganisms for the removal of BPA through break down of organic contaminants is straightforward, money saving, and widely acknowledged by the public.

10.12911/22998993/141333

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Citations (11)

Efficiency of Attached-Growth Sequencing Batch Reactor in the Treatment of Recycled Paper Mill Wastewater

Jurnal Teknologi (2015)

Mohd Hafizuddin Muhamad Siti Rozaimah Sheikh Abdullah Hassimi Abu Hasan

In this study, an attached-growth bioreactor was operated using granular activated carbon (GAC) with additional biomass; and evaluatedits performance in the treatment of real recycled paper mill effluent at chemical oxygen demand (COD) level in the range of 800-1300 mg/L, a fixed hydraulic retention time of 24 hours and COD:N:P ratio of about 100:5:1. A laboratory-scale aerobic sequencing batch reactor (SBR) was used. The efficiency of this biological treatment processwas studiedover a 300-day period, in order to evaluate their performance, especially for the removal of nitrogen compound and of biodegradable organic matter. It has been found that this process was able to remove organic matter (expressed as COD; 91-99%) and turbidity (89-99%) almost completely and simultaneously; the removal of nitrogen (expressed as NH3-N; 70-94%), phosphorus (expressed as PO43-P; 42-71%), suspended solid (81-99%) and colour (72-91%) were sufficiently achieved. The overall performance confirmed that an attached-growth SBR system using additional biomass on GAC is a promising configuration for wastewater treatment in terms of the performance efficiency and process stability under fluctuations of organic load.

Sequencing batch reactor

Turbidity

Hydraulic retention time

Paper mill

Batch reactor

10.11113/jt.v74.4557

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Citations (3)