Hasfalina Che Man

Universiti Putra Malaysia | UPM · Department of Biological and Agricultural Engineering

A R T I C L E I N F O Keywords: Aquaculture IoT-based technology IoT water-quality monitoring IoT feeding optimization IoT health inspection IoT-user interface A B S T R A C T Aquaculture plays a pivotal role in global food production, grappling with distinct hurdles in water quality, feeding operation, and disease control. Efficient management of...

The recalcitrance of the palm oil empty fruit bunch (EFB) lignocellulosic structure is a key hindrance to high methane production, even with co-digestion with palm oil mill effluent. This study pre-treated EFB with subcritical water (SCW) to increase methane and reduce lignin. Response surface methodology was used to examine the effects and interac...

There are thousands of different rice cultivars available worldwide, and glutinous rice ( Oryza sativa var. glutinosa ), sometimes known as sticky rice, is one of the most well-known varieties. Glutinous Rice Husk (GRH) is categorized as lignocellulosic biomass obtained as a by-product of rice manufacturing. The GRH is residue with a substantial am...

Anaerobic digestion of oil palm empty fruit bunches (EFB) is considered an effective method for non-renewable energy substitution through biogas production. However, lignocellulosic recalcitrance structure of EFB is one of the main difficulties in achieving high biogas production for anaerobic co-digestion with palm oil mill effluents (POME). In th...

The physicochemical properties of dabai kernel oil as well as the morphology of dabai samples are affected by the optimal extraction method and process configurations. Subcritical water treatment prior to dabai kernel oil extraction was optimized through the utilization of response surface methodology based on central composite design. The subcriti...

Due to the rapid growth of the aquaculture industry, large amounts of organic waste are released into nature and polluted the environment. Traditional organic waste treatment such as composting is a time-consuming process that retains the ammonia (NH 3) in the compost, and the compost produced has little economic value as organic fertilizer. Illega...

BACKGROUND Five computational intelligence approaches, namely Gaussian process regression (GPR), artificial neural network (ANN), decision tree (DT), ensemble of trees (EoT) and support vector machine (SVM), were used to describe the evolution of moisture during the dehydration process of glutinous rice. The hyperparameters of the models were optim...

Despite the economic benefits of phycoremediation in wastewater treatment, existing scientific reports have highlighted its limited efficacy in contaminant removal. Similarly, membrane separation faces significant challenges due to associated fouling, hindering its widespread application. Addressing these issues, this study introduces an innovative...

Anaerobic digestion of pineapple waste appears to be an effective method for non-renewable energy substitution through biogas production. The potential power generation from the exploitation of pineapple waste as fuel is estimated to be roughly 20.8 MW. Nevertheless, the intricate composition of pineapple waste, characterized by the complex arrange...

Published Version Free access until 12 May 2024 https://authors.elsevier.com/c/1iopR,LlFPO36L DOI: https://doi.org/10.1016/j.wasman.2024.03.021

Drying is an intensive unit operation used to preserve the pineapple fruit. In this study, the kinetics of color degradation in pineapple slices during blanching as pretreatment with combined microwave and convection drying at different temperatures (110, 120, 130, and 140°C) and drying times (5, 10, 20, 25, and 30 min) were determined. L*, b*, chr...

Foam and scum have impacted digestion, causing process disturbances in several industries. The cause of foam and scum is difficult to determine as there are complex compounds in wastewater. Proteins are the primary compound found in food processing industries wastewater. This study investigates the effect of protein concentration on foaming and scu...

Lignocellulosic biomass (LCB) is a common substrate for biogas and bioethanol production due to its significant properties and abundance. However, it has a unique recalcitrant structure that can inhibit the production of biogas, which necessitates pre-treatment of the substrate to obtain higher cellulose or sugars ready for microbial hydrolysis in...

Aeration effects on membrane filtration of wastewater remain partially explored, as lesser or excessive application often aggravates the fouling. Furthermore, most polymeric membranes are hydrophobic, which facilitates the deposition of foulants and layer formation. There is a need for further investigation on the use of aeration and membrane modif...

Pepper processing is one of the largest productions that significantly contribute (98%) to Sarawak, Malaysia’s economic and agricultural sectors. The prolonged retting process of pepper berries would cause undesirable dark colour and acidic wastewater. This study aims to evaluate the performance of an electrocoagulation treatment using nickel and c...

Organic loading influences the effectiveness of producing biogas through anaerobic digestion. This study set out to investigate the effect of organic loading on the anaerobic mesophilic digestion of cow dung, the parameters involved in the digestion process and to evaluate the kinetics. Anaerobic digestion of cow dung at different organic loading (...

Foaming has impacted the digestion process causing severe process failures. The basis of foaming is often unclear due to multiple foaming compounds in a single system. This study aims to elucidate the effect of protein concentration on foaming in anaerobic sludge and cow manure (CM) digesters inoculated with synthetic wastewater as a substrate. Gel...

A modified outdoor large-scale nutrient recycling system was developed to compost organic sludge and aimed to recover clean nitrogen for the cultivation of high-value-added microalgae. This study investigated the effect of calcium hydroxide addition on enhancing NH3 recovery in a pilot-scale reactor self-heated by metabolic heat of microorganisms d...

This work reviews hydrothermal subcritical water pretreatment to enhance biogas production through anaerobic digestion. The complexity of the lignocellulosic structure has been the main limitation contributing to unsatisfactory biogas production throughout the anaerobic digestion. The high resistance of the structure to biological hydrolysis has in...

Recently, frequent discharge of water-ladened emerging organic pollutants such as Bisphenol A has elicited serious concern due to its pernicious effects on public health and the ecological environment. In this study, hematite nanoparticles (Fe2O3) were synthesized via the sol–gel auto-combustion technique and incorporated as a nanofiller to fabrica...

Grain drying is a vital operation in preparing finished grain products such as flour, drinks, confectioneries and infant food. The grain drying kinetics is governed by the heat and mass transfer process between the grain and the environment. Incomplete, improper and over-drying are crucial to the grain quality and negatively influence the acceptanc...

The potential of raw durian husk and NaOH-modified durian husk as an adsorbent, using different doses, 0.5 g, 1.0 g, 1.5 g, and 2.0 g, is investigated to improve soaking water of pepper berries during the retting process. The surface area and the pore size of the durian husk were examined using Brunner Emmett and Teller analysis. The surface area o...

The increasing significance of aged refuse biofilters for biodegradation processes in wastewater treatment necessitated the constant search for its bacterial properties. This study focused on the diversity of the bacteria present in aged refuse by DNA extraction. The PCR amplifier was used for DNA sequencing using DNA polymerase primer. For PCR amp...

Pollution of water resources is a high-priority global issue. Nanocomposite membrane technology is an advanced purification technology that offers superior separation and filtration of organic and inorganic contaminants from water along with prolonged life of the membrane. In this study, iron oxide (Fe2O3) nanoparticles (NPs) were synthesized using...

Dabai (Canarium odontophyllum) is a fruit-bearing plant native to Borneo. Its fruit is an indigenous seasonal fruit that is considered to be underutilized due to its short shelf life. However, new products have been developed to ensure a continuous supply of dabai fruit throughout the year. Hence, the exploration of dabai fruits in characterization...

Foaming has impacted the digestion process causing severe process failures. The basis of foaming is often unclear due to multiple foaming compounds in a single system. This study aims to elucidate the effect of protein concentration on foaming in anaerobic sludge and cow manure (CM) digesters inoculated with synthetic wastewater as a substrate. Gel...

In recent times, the continuous occurrence of excessive endocrine-disrupting compounds (EDCs) (ngL-1/µg L-1) in ‎drinking and wastewater causes life-threatening health disorders in humans, aquatic lives, and deteriorating the ‎water quality. Presently, there are no generally accepted controlling discharge limits of the EDCs to forestall its ‎probab...

The optimal pre-treatment method and conditions depend on the types of lignocellulose present due to the complexity and the variability of biomass chemical structures. This study optimized subcritical water pre-treatment to ensure maximum methane production from pineapple waste prior to anaerobic co-digestion with cow dung using the response surfac...

The current study compares the biogas production via anaerobic co-digestion of pineapple waste and cow dung to mono digestion under mesophilic condition, with the goal of modifying the substrate ratio and increasing the system stability. Five different cow dung to pineapple waste ratios (1:1, 1:2, 1:3, 2:1 and 3:1) were assessed based on volatile s...

Rice is food consumed regularly and is vital for the food security of over half the world’s population. Rice production on a global scale is predicted to rise by 58 to 567 million tonnes (Mt) by 2030. Rice contains a significant number of calories and a wide variety of essential vitamins, minerals, and other nutritional values. Its nutrients are su...

This work, using a batch study, revealed the performance of modified magnetite millscales with a cationic surfactant [cetyl trimethyl ammonium bromide (CTAB)] (Fe3O4/CTAB MNS) in cadmium ion removal from aqueous solution. The self-assembly method was employed to modify Fe3O4 with CTAB. As prepared Fe3O4 limited the modification method to ex situ. T...

This study assesses the effects of flowing water on soaking water quality during the retting process of pepper berries. Generally, organic matter and the bioactive compounds that naturally exist in pepper may have leached out into the soaking water because of the prolonged retting process. Daily samplings were carried out by triplicate water sample...

In this study, magnetite nano-adsorbent (MNA) was extracted from mill scale waste products, synthesized and applied to eliminate Cu ²⁺ from an aqueous solution. Mill scale waste product was ground using conventional milling and impacted using high-energy ball milling (HEBM) for varying 3, 5, and 7 milling hours. In this regard, the prepared MNA was...

The essential oil from Citrus hystrix leaves is used commercially in Malaysia as a flavor and aroma agent, perfumery, and medical preparations. The main objective for this study was to determine the optimum parameters of ultrasonic pre-treatment; amplitude, particle size of leaves and pre-treatment time prior to the Soxhlet extraction for Citrus hy...

Recently, the glut of residues generated from the oil palm mill sector has become a topical global issue due to poor management strategies that constitute environmental risks. This work focused on the characterization of palm oil mill ashes to improve the bearing strength of weak soil. Palm oil mill ashes, namely boiler bottom ash (POMBBA), boiler...

Lack of good management practice of chicken slaughterhouse wastewater (CSWW) has caused pollution into water bodies. In this study, the potential of seed sludge acclimatised modified synthetic wastewater (MSWW) on bioreactor performance and energy recovery of CSWW treatment was investigated. Two sets of upflow anaerobic sludge blanket (UASB) reacto...

Pineapple waste accounts for a significant part of waste accumulated in landfill which will further contribute to the release of greenhouse gases. With the rising pineapple demands worldwide, the abundance of pineapple waste and its disposal techniques are a major concern. Exploiting the pineapple waste into valuable products could be the most sust...

Aquaculture based on the Internet of Things (IoT) is a growing field of interest in the fishing industry. The IoT technology is advancing the agriculture 4.0 era, and yet, Aquaculture 4.0 is a lagging field in many countries. This article presents results obtained so far from ongoing research of published work highlighting water quality monitoring...

Recently Bisphenol A (BPA) is one of the persistent trace hazardous estrogenic contaminants in the environment, that can trigger a severe threat to humans and environment even at minuscule concentrations. Thus, this work focused on the synthesis of neat and magnetic biochar (BC) as a sustainable and inexpensive adsorbent to remove BPA from aqueous...

Over the years, the persistent occurrence of superfluous endocrine-disrupting compounds (EDCs) (sub µg L−1) in water has led to serious health disorders in human and aquatic lives, as well as undermined the water quality. At present, there are no generally accepted regulatory discharge limits for the EDCs to avert their possible negative impacts. M...

This paper investigates the kinetics of organic removal by non-coated Cosmo ball biomedia and activated carbon-coated Cosmo ball biomedia in the bioreactors for domestic wastewater treatment. The Modified Stover Kincannon Model and Grau Model were employed for the kinetic evaluation of the reactor performance during the operational period. The...

The increasing solid waste management problems in developing countries necessitated landfill mining to determine the reuse potentials of landfilled solid waste materials. In this study, characterization of landfilled solid waste obtained from a closed landfill site in Malaysia was conducted to ascertain its reuse potentials for biodegradation in wa...

Despite its abundance at the palm oil mill, the oil palm decanter cake could be co-digested due to its high easily biodegradable organic contents, especially lipids for enhancing methane production. In this study, the feasibility of co-digestion decanter cake and sewage sludge was assessed in batch biochemical methane potential (BMP) serum bottle 1...

The present study was conducted to establish adsorbent potential of magnetite nanoparticle ferrous ferric oxide (Fe3O4) for removal of Cu(ll) ions in wastewater. In the study, Fe3O4 was prepared by synthesizing low-cost recycled mill scale waste in an aqueous solution. Samples of scale wastes were milled and ground using high-energy ball milling (H...

Lada Hitam dan Lada Putih: Cara Pemprosesan dan Produk adalah buku mengenai lada atau dikenali sebagai "Raja segala rempah" dalam budaya orang Melayu. Hal ini kerana Malaysia merupakan salah satu pengeluar terbesar lada di dunia dan juga tanaman sosio-ekonomi yang penting di Malaysia khususnya di Sarawak. Buku ini merangkumi pelbagai tajuk termasuk...

The treatment of high-strength wastewater using an anaerobic digester coupled with a dynamic membrane has gained significant interest of late due to its small footprint and low cost of supporting material for the membrane. Dynamic membrane fundamentally performs similarly to the conventional membranes by the cake layer deposited onto the supporting...

The effectiveness of ammonium (NH4⁺) adsorption was investigated, using spray-dried, pH-treated bentonite, and kaolin as adsorbents. Each powder's adsorption capacity towards NH4⁺ was examined after up to 120 min of sample exposure, and results were compared. The zeta potential values for bentonite samples were between −1.1 and −19.4 mV, while for...

Durian known as the King of Fruit is a prominent, common native Southeast Asian fruit and very popular among the local Malaysians. Nowadays, there are various types of durian-based products available in the market such as ice-cream, cakes, chips, chocolate bars, and pre-mixed powders. There are also traditional dessert products produced using fresh...

In this work, the magnetite nanoparticles (MNP) were synthesized from steel waste product and used as an adsorbent to remove metal copper (Cu) in an aqueous solution. The magnetite powders were mechanically alloying using high energy ball milling for 3, 6, and 9 h to produce MNP. The structural, composition, magnetic properties and morphological of...

In this study, a techno-economic assessment of an on-farm biogas system using an anaerobic biofilm reactor utilizing cow manure as a fermentation substrate was evaluated. A projection model was developed using Microsoft Excel software with three outputs, the size and dimension of a bioreactor, experimental microbial kinetic studies, and the economi...

High proportion of copper has become a global challenge owing to its negative impact on the environment and public health complications. The present study focuses on the fabrication of a polyvinylidene fluoride (PVDF)-polyvinyl pyrrolidone (PVP) fiber membrane incorporated with varying loading (0, 0.5, 1.0, 1.5, and 2.0 wt%) of titanium dioxide (Ti...

High proportion of copper has become a global challenge owing to its negative impact on the environment and public health complications. The present study focuses on the fabrication of a polyvinylidene fluoride (PVDF)-polyvinyl pyrrolidone (PVP) fiber membrane incorporated with varying loading (0, 0.5, 1.0, 1.5, and 2.0 wt%) of titanium dioxide (Ti...

The present study synthesized nano-magnetite (Fe3O) from milled steel chips using the high energy ball milling (HEBM) method, characterized it, and then utilized it as a sorbent to remediate boron concentration at various pH (4–9), dosages (0.1–0.5 g), contact times (20–240 min), and initial concentrations (10–100 mg/L). The nano-sorbents were char...

Food processing wastewater (FPW) contains high levels of oil and grease (O&G), especially from factories that produce fast food such as nuggets, sausages, and burger patties from beef, poultry, and fish. Therefore, the feasibility of replacing conventional membranes for the treatment of FPW with low-cost dynamic membranes (DM) as an alternative was...

Water is a critical resource necessary for life to be sustained, and its availability should be secured, appropriated, and easily obtainable. The continual detection of endocrine-disrupting chemicals (EDCs) (ng/L or µg/L) in water and wastewater has attracted critical concerns among the regulatory authorities and general public, due to its associat...

The loss and impact of non-renewable fossil energy on global warming concerns are prompting to intensive research to find viable, less emissions-oriented alternative energies. The present work aims to study the potential of hydrogen gas production (for renewable energy) by electrocoagulation process from landfill leachate. The Design-Expert softwar...

The determination of correlations between mass with its physical properties such as dimensions, volume and projected area is crucial in the design and development of some post-harvest processing. In this study, the physical properties were measured, and the mass of Kuching pepper berries variety was predicted in four models including Linear, Quadra...

Response Surface Methodology (RSM) was applied to study the optimum condition of palm oil extraction from oil palm decanter cake (OPDC) using Soxhlet extraction and nhexane as solvent. The main objective of this study was to achieve maximum oil extraction by determining the optimum of two parameters such as reaction time and solid to solvent ratio....

Acid Mine Drainage (AMD) occurs as a result of mining activities during mineral exploration. Interaction of the minerals in the presence of atmospheric oxygen and water produces AMD as an end product. AMD can also be produced by weathering of sulphide minerals through series of process, which includes oxidation and hydrolysis. The main aim of the s...