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Articles 37561 - 37590 of 818745
Full-Text Articles in Entire DC Network
Pluredecadal Patterns Of The Harmful Algal Blooms In The Highly Dynamic Marine Ecosystem Of Alexandria (Egypt): A Review, Samia K. Mikhail, Wagdy Labib
Pluredecadal Patterns Of The Harmful Algal Blooms In The Highly Dynamic Marine Ecosystem Of Alexandria (Egypt): A Review, Samia K. Mikhail, Wagdy Labib
Blue Economy
The long-term study of phytoplankton variability in the coastal waters of Alexandria encounters significant challenges due to several factors such as inconsistency in sampling efforts conducted across various spatial and temporal scales, limitations of short-term monitoring methods, rapid urbanization and economic expansion, and their diverse eco-environmental impacts. The article analyzes a quantitative and qualitative dataset on algal bloom variabilities in Alexandria marine ecosystem from 1992 to 2023, highlighting changes in bloom patterns and trends such as annual cycles, short-term trends, rapid turnover rates of bloom structures, recurrent blooms of various classes, escalation in the frequency and magnitude, unusual episodic events, …
Influence Of Bacillus Pumilus On The Plasticity Of Treated Lateritic Soil, Mr U.E Nwaedozie, Prof K. J. Osinubi, Prof A. O. Eberemu, Paul Yohanna
Influence Of Bacillus Pumilus On The Plasticity Of Treated Lateritic Soil, Mr U.E Nwaedozie, Prof K. J. Osinubi, Prof A. O. Eberemu, Paul Yohanna
The Journal of Engineering Research
The effect of Bacillus pumilus (B. pumilus) on the improvement potential of some selected geotechnical properties of lateritic soil was studied. Air-dried soils were cured in paced Bacillus pumilus suspensions between 0 and 2.4 × 109 cells/ml. Cured test samples adopted mix ratios of 50% B. pumilus / 50 % cementation reagent(50 % B – 50 % C) for sample A and 25% B. pumilus / 75 % cementation reagent(25% B – 75% C), for sample B, all conforming to the liquid limit of the soil. The geotechnical properties of the lateritic soil showed different levels of improvement with increasing …
Bioseq: A Molecular Intelligence Platform Based On Organism-On-Chip Technology For Bridging Data Gaps Between C. Elegans And Humans, Hunter Edwards, Adnan Qureshi, Mizanur Rahman, Tyler Chiriboga, Amar Chittiboyina, Ikhlas Khan, Siva Vanapalli
Bioseq: A Molecular Intelligence Platform Based On Organism-On-Chip Technology For Bridging Data Gaps Between C. Elegans And Humans, Hunter Edwards, Adnan Qureshi, Mizanur Rahman, Tyler Chiriboga, Amar Chittiboyina, Ikhlas Khan, Siva Vanapalli
Oxford ICSB
The FDA Modernization Act 2.0, emphasizes the urgent need for New Approach Methodologies (NAMs) to replace conventional animal testing in safety and efficacy assessments. NemaLife’s organism-on-chip platform, utilizing C. elegans, microfluidics and visual AI, provides a high throughput platform for in vivo screening. To enhance human relevance and reduce the inter-species gap between C. elegans and human, we developed BioSeq, a novel discovery workflow, based on high-throughput transcriptomics. Leveraging the 60-80% homology between C. elegans and human genomes, BioSeq translates worm gene expression data to human orthologs. This enables: (i) identification of differentially expressed human-relevant genes triggered by bioactive ingredients …
Development Of Selenium-Silica Nanocomposites By Sol-Gel Process Utilizing Three Different Reducing Agents And Its Characterization, Soumya Mukherjee
Development Of Selenium-Silica Nanocomposites By Sol-Gel Process Utilizing Three Different Reducing Agents And Its Characterization, Soumya Mukherjee
The Journal of Engineering Research
Nanocrystalline Selenium was synthesized within a silica matrix using a sol-gel method with high-purity SeO2, ethyl alcohol, distilled water, and TEOS (Tetraethyl orthosilicate). This process encapsulated the selenium dioxide in the silica matrix, which was then reduced at about 100°C using an oil bath. Three reducing agents were employed: acetone vapor, and sodium borohydride (NaBH4) and hydrazine (N2H4) in liquid form. DSC-TGA analyses of the precursor mixture determined the crystallization temperature for selenium nanoparticle formation within the matrix to be around 100°C. Post-heating phase analysis via XRD revealed …
Enhanced Biogas Production From Rice Husks And Okra Stalks By Co-Digestion With Ostrich Dung And Cow Manure, Huda Jassim, Amal Khalil
Enhanced Biogas Production From Rice Husks And Okra Stalks By Co-Digestion With Ostrich Dung And Cow Manure, Huda Jassim, Amal Khalil
The Journal of Engineering Research
In this study, two sides were studied. First one included single and combined pretreatment which were performed to treat milled rice husks compared to increase the production of biogas untreated rice husks. The other side included investigate the effect of two types of mixing: mixing rice husks and okra stalks using three mixing ratios inoculated with ostrich dung compared to rice husks and okra stalks inoculated with ostrich dung separately and mixing ostrich dung and cow manure using three mixing ratios with rice husks compared to using rice husks inoculated with ostrich dung and cow manure separately. The ten reactors, …
State-Of-The-Art Review On Utilization Of Fly Ash In Pavement Structures, Uneb Gazder, Md Arifuzzaman, Marwa Jazi, Madiha Abid
State-Of-The-Art Review On Utilization Of Fly Ash In Pavement Structures, Uneb Gazder, Md Arifuzzaman, Marwa Jazi, Madiha Abid
The Journal of Engineering Research
The use of fly ash in construction has been on the rise, yet its application in pavement construction remains relatively underexplored. This study addresses this gap by critically reviewing 70 years of research on fly ash usage in pavement engineering, offering valuable recommendations. Class 'C' fly ash is employed for soil stabilization, while class 'F' is used in concrete. In both flexible (asphalt) and rigid (concrete) pavements, fly ash primarily functions as a filler material. Fine ash, owing to its fineness, enhances asphalt concrete by reducing void ratios and water sensitivity, as well as easing subgrade compaction while increasing compressive …
Chemical Risk Assessment And Prevention Action Plan Related To Petroleum Production. Case Study Of Laboratory And Storage Units In An Algerian Oil And Gas Company, Samia Chettouh, Saleh Arif
Chemical Risk Assessment And Prevention Action Plan Related To Petroleum Production. Case Study Of Laboratory And Storage Units In An Algerian Oil And Gas Company, Samia Chettouh, Saleh Arif
The Journal of Engineering Research
Chemical risk is considered one of the most frequent risks in the workplace, affecting the safety of workers continuously exposed to chemical substances. In addition, it can have an environmental impact and cause an explosion when unacceptable conditions are met. To know the effects of chemical risks and how to prevent them, this study is proposed, the main objective of which is the evaluation of chemical hazards and the proposal of an action plan to avoid this kind of risk in industrial companies. Our case study focused on the crude oil production company " PERTAMINA" using the SEIRICH software. The …
Investigation Of Noise Exposures, Perception, And Health Effects In Different Microenvironments In A University Community, Patrick Amoatey, Issa Al-Harthy, Khalifa Al-Jabri, Abdullah Al-Mamun, Mahad Baawain
Investigation Of Noise Exposures, Perception, And Health Effects In Different Microenvironments In A University Community, Patrick Amoatey, Issa Al-Harthy, Khalifa Al-Jabri, Abdullah Al-Mamun, Mahad Baawain
The Journal of Engineering Research
This study aims to assess noise levels in selected outdoor and indoor microenvironments in a University community in Oman. The perception of noise levels within the Sultan Qaboos University campus was investigated through a survey study. Also, the effect of exposed noise levels on annoyance and sleep disturbance were predicted including their potential risk on cardiovascular health. Among all the measured parameters, it was found that outdoor (41.6%-50%) and indoor (38.5%-46.2%) microenvironments have exceeded the critical levels of 55 dB during morning and afternoon periods. The respondents (698 people) identified traffic and indoor building-related activities as the main sources of …
Recent Cnn-Based Techniques For Breast Cancer Histology Image Classification, Arunadevi Karuppasamy, Abdelhamid Abdesselam, Hamza Zidoum, Maiya Al-Bahri
Recent Cnn-Based Techniques For Breast Cancer Histology Image Classification, Arunadevi Karuppasamy, Abdelhamid Abdesselam, Hamza Zidoum, Maiya Al-Bahri
The Journal of Engineering Research
Histology images are extensively used by pathologists to assess abnormalities and detect malignancy in breast tissues. On the other hand, Convolutional Neural Networks (CNN) are by far, the privileged models for image classification and interpretation. Based on these two facts, we surveyed the recent CNN-based methods for breast cancer histology image analysis. The survey focuses on two major issues usually faced by CNN-based methods namely the design of an appropriate CNN architecture and the lack of a sufficient labelled dataset for training the model. Regarding the design of the CNN architecture, methods examining breast histology images adopt three main approaches: …
A Tidal Flow Model Of The Western Coast Of Libya, Talal Etri, Ahmed F. Abugdera, Abdelrahman Elata
A Tidal Flow Model Of The Western Coast Of Libya, Talal Etri, Ahmed F. Abugdera, Abdelrahman Elata
The Journal of Engineering Research
This paper presents the hydrodynamics on the western coast of Libya. The investigated area, which is a part of the Mediterranean Sea, is one of the most critical and active coastal region in the country. A 2Dh process-based model for flow based on the Delft3D modelling system from Deltares is constructed for the study area. Extensive field data concerning the tidal constituents were used. The flow model that is necessary to understand the hydrodynamics of the area was calibrated and validated using the field measurements. In this paper, only the water levels and tidal components for the astronomical tide are …
Numerical Simulation Of Ventilation Potential In Traditional Omani House: Bait Al Khandaq As An Example, Hayder Murad Khan, Saleh Al-Saadi, Aliya Al-Hashim
Numerical Simulation Of Ventilation Potential In Traditional Omani House: Bait Al Khandaq As An Example, Hayder Murad Khan, Saleh Al-Saadi, Aliya Al-Hashim
The Journal of Engineering Research
The use of cooling systems has increased because of drastic changes introduced after the oil revolution in the local architecture by using modern building designs and practices that may not suit Oman's climate. The traditional architecture in this country is characterized by its passive cooling design features, which the Locals fine-tuned through trial and error. These sustainable passive design practices developed over the ages have the ability to provide healthy and comfortable spaces for their occupants while preserving the environment and natural resources. These strategies are still evident in many traditional settlements and buildings in Oman. The present research evaluates …
Extreme Cold Discomfort In Extreme Hot Climates, A Study Of Building Overcooling In Office Buildings In Qatar, Abdulla Alnuaimi, Sukumar Natarajan
Extreme Cold Discomfort In Extreme Hot Climates, A Study Of Building Overcooling In Office Buildings In Qatar, Abdulla Alnuaimi, Sukumar Natarajan
The Journal of Engineering Research
Indoor cold discomfort in Qatar due to “building overcooling” is increasing, as air-conditioning prevails, and global temperatures rise. Overcooling is not dependent only on the inappropriate design of cooling systems, but on “international” thermal comfort standards that are not customized for warm climates. International standards are unintentionally biased towards cooler climates and cultures, the application of which in warm climates result in colder indoor temperatures observed by building occupants and increased cooling energy demand. Overcooling is an over-expenditure of energy, resulting in uncomfortably cold indoor thermal conditions, and unnecessary carbon emissions. In this study, the analysis of field data from …
Urban Layout For Building Solar Optimization And Outdoor Comfort Balance: Neighborhood Strategy In Mediterranean Climate, Julia Díaz-Borrego, Ignacio Acosta, Samuel Domínguez- Amarillo
Urban Layout For Building Solar Optimization And Outdoor Comfort Balance: Neighborhood Strategy In Mediterranean Climate, Julia Díaz-Borrego, Ignacio Acosta, Samuel Domínguez- Amarillo
The Journal of Engineering Research
The urban configuration in the Mediterranean area, which has noticeable solar radiation and significant thermal oscillation, is one of the factors that affect the microclimate and the urban heat island phenomenon of the cities located in that zone. To contribute to the improvement of urban comfort, this work presents an experimental methodological proposal for the analysis and multicriteria optimization of performance indicators using a parametric workflow through Grasshopper. This workflow can lead to the development of a set of environmental design criteria as support tools in the design of the urban configuration. The methodology is based on the quantification of …
Improving Of Biogas Production Using Different Pretreatment Of Rice Husk Inoculated With Ostrich Dung, Amal Khalil, Huda Jassim
Improving Of Biogas Production Using Different Pretreatment Of Rice Husk Inoculated With Ostrich Dung, Amal Khalil, Huda Jassim
The Journal of Engineering Research
No abstract provided.
Spatial And Statistical Analysis Of Environmental Noise Levels In The Main Campus Of The University Of Lagos, Alfred Alademomi, Chukwuma Okolie, Babatunde Ojegbile, Olagoke Daramola, Johanson Onyegbula, Rahmat Adepo, Wemimo Ademeno
Spatial And Statistical Analysis Of Environmental Noise Levels In The Main Campus Of The University Of Lagos, Alfred Alademomi, Chukwuma Okolie, Babatunde Ojegbile, Olagoke Daramola, Johanson Onyegbula, Rahmat Adepo, Wemimo Ademeno
The Journal of Engineering Research
The increasing student population, developmental, and commercial activities within the University of Lagos main campus have led to an increase in daily noise levels. These increasing noise disturbances have disrupted the serenity and tranquillity of the campus environment. In this study, the noise levels are assessed at thirty–four selected monitoring stations within the University of Lagos main campus. The assessment was done to determine the compliance of the University to international standards set by World Health Organisation for tolerable noise levels in different environmental types (or land use classes). Over a period of three days, the minimum, maximum and average …
Identification Of Obstructive Sleep Apnea Using Artificial Neural Networks And Wavelet Packet Decomposition Of The Hrv Signal, Abdulnasir Hossen, Sarah Qasim
Identification Of Obstructive Sleep Apnea Using Artificial Neural Networks And Wavelet Packet Decomposition Of The Hrv Signal, Abdulnasir Hossen, Sarah Qasim
The Journal of Engineering Research
No abstract provided.
Applicability Of Using Reverse Osmosis Membrane Technology For Wastewater Reclamation In The Gaza Strip, Mazen Abuatayef, Abedelmajeed Kahail, Hassan Al-Najjar, Thaer Abushbak
Applicability Of Using Reverse Osmosis Membrane Technology For Wastewater Reclamation In The Gaza Strip, Mazen Abuatayef, Abedelmajeed Kahail, Hassan Al-Najjar, Thaer Abushbak
The Journal of Engineering Research
No abstract provided.
Development Of Chicken Feather Reinforced Insulation Paperboard From Waste Carton And Portland Cement, J.K. Odusotea, K.S. Dosunmu
Development Of Chicken Feather Reinforced Insulation Paperboard From Waste Carton And Portland Cement, J.K. Odusotea, K.S. Dosunmu
The Journal of Engineering Research
No abstract provided.
Simulation-Optimization Model For Design Of Water Distribution System Using Ant Based Algorithms, Moeini R. R., Moulaei S.A.M. S.A.M.
Simulation-Optimization Model For Design Of Water Distribution System Using Ant Based Algorithms, Moeini R. R., Moulaei S.A.M. S.A.M.
The Journal of Engineering Research
In this paper, the Ant Colony Optimization Algorithm (ACOA) is applied to solve Water Distribution System design optimization problem proposing two different methods. Considering pipe diameters as decision variables of the problem, Ant System and Max-Min Ant System, referred to ACOA1 and ACOA2 respectively, are applied to determine pipe diameters. In proposed methods, the ant-based models are interfaced with EPANET as simulator for the hydraulic analysis. Three benchmark test examples are solved with proposed methods and the results are presented and compared with those obtained with other existing methods. The results show the capability of the proposed methods to optimally …
Quantitative Analysis Of Force And Torque In Bone Drilling, K. Alam, R. Muhammad, A. Shamsuzzoha, A. Alyahmadi, N. Ahmed
Quantitative Analysis Of Force And Torque In Bone Drilling, K. Alam, R. Muhammad, A. Shamsuzzoha, A. Alyahmadi, N. Ahmed
The Journal of Engineering Research
Bone drilling is an important and the most frequent operation in orthopaedics and other bone surgical procedures. Prediction and control of drilling force and torque are critical to safe and efficient surgeries. This paper studies the drilling force and torque arising from bone drilling process. Drilling parameters such as drilling speed, feed rate, drill size and drill condition (sharp and worn) were changed to measure the force and torque in the direction of the drill penetration. Experimental results demonstrated lower drilling force using a sharp drill compared to a worn drill for similar drilling conditions. Contrary to the drilling force, …
Experimental Investigation Of Biogas Production From Kitchen Waste Mixed With Chicken Manure, H. Mousa, A. Obaidat, H.B. Khaled, A. Alawaneh, A. Tarawneh
Experimental Investigation Of Biogas Production From Kitchen Waste Mixed With Chicken Manure, H. Mousa, A. Obaidat, H.B. Khaled, A. Alawaneh, A. Tarawneh
The Journal of Engineering Research
ogas produced from solid kitchen waste (KW) mixed with chicken manure (M) at different mass ratios was investigated. The effect of the ratio of the amount of water to the mixed solid waste on the amount of biogas produced was studied. The results showed that at a fixed ratio of water-to-solid waste, the amount of biogas increased as the amount of chicken M increased. At a fixed M-to-KW ratio, the amount of biogas produced increased as the solid content increased and then decreased, reaching its maximum value at a solid waste-to-water ratio of 1:1. The pH of the bioreactor containing …
Arginine-Amino Acid Interactions And Implications To Protein Solubility And Aggregation, A. R. Shaikh, D. Shah
Arginine-Amino Acid Interactions And Implications To Protein Solubility And Aggregation, A. R. Shaikh, D. Shah
The Journal of Engineering Research
Arginine, useful in protein refolding, solubilization of proteins, and suppression of protein aggregation and non-specific adsorption during formulation and purification, is a ubiquitous additive in the biotechnology and pharmaceutical industries. In order to provide a framework for analyzing the molecular level mechanisms behind arginine/protein interactions in the above context, density functional theory was used to systematically examine how arginine interacts with naturally occurring amino acids. The results show that the most favorable interaction of arginine is with acidic amino acids and arises from charge interactions and hydrogen-bond interactions. Arginine is also shown to form stacking and T-shaped structures with aromatic …
Loss Reduction In Isolated Rural Area Distribution Network Using Photovoltaic System, M. H. Albadi, N.A. Al-Mashaikhi, S. Al-Hinai, R. S. Al-Abri, A.S. Al-Hinai, Q.K. Al-Aamri, A.A. Al-Mazidi, M.S. Al-Gafri
Loss Reduction In Isolated Rural Area Distribution Network Using Photovoltaic System, M. H. Albadi, N.A. Al-Mashaikhi, S. Al-Hinai, R. S. Al-Abri, A.S. Al-Hinai, Q.K. Al-Aamri, A.A. Al-Mazidi, M.S. Al-Gafri
The Journal of Engineering Research
This paper investigates the utilization of photovoltaic (PV) systems in a rural area electricity network. The Rural Area Electricity Company of Oman is planning to install a 304 kW PV system at the powerhouse of the Almazyonah network. Based on the available network data, a power flow model of the system under study was built and the system’s performance was studied. The location and installed capacity of the planned PV system were optimized based on loss reduction.
Variation In Methane Concentration Produced From Anaerobically Digested Vegetables, H. Mousa, M. Silwadi
Variation In Methane Concentration Produced From Anaerobically Digested Vegetables, H. Mousa, M. Silwadi
The Journal of Engineering Research
Anaerobic fermentation is a highly promising technology for converting biomass waste into methane, which then may directly be used as an energy source. Attempts have been made to optimize various parameters in order to determine the most favorable recipe for maximum biogas production from fermented vegetable waste. The biogas production from many types of vegetable waste such as zucchini, orange peel, tomato, potato, and rice was studied in batch digesters. The effect of adding chicken dung and sludge to vegetable waste on the concentration of methane in the produced biogas was investigated. The experiments were conducted at room temperature (20°C) …
Experimental And Modeling Investigations Of The Viscosity Of Crude Oil Binary Blends: New Models Based On The Genetic Algorithm Method, R.S. Al-Maamari, G. Vakili-Nezhaada, M. Vatani
Experimental And Modeling Investigations Of The Viscosity Of Crude Oil Binary Blends: New Models Based On The Genetic Algorithm Method, R.S. Al-Maamari, G. Vakili-Nezhaada, M. Vatani
The Journal of Engineering Research
Achieving an estimation of viscosity in crude oil binary mixtures is often difficult because the relationship of viscosity, to the fraction of each crude oil, and many other parameters and constants is comply. This relationship can be expressed by mathematical models with different variables. Besides the known models for predicting the viscosity of crude oil mixtures, the petroleum industry demands other models which give accurate predictions. In this work, two new empirical models have been developed for the calculation of the viscosity of binary crude oil blends. Two techniques—least square (LS) and genetic algorithm (GA)—were used to determine the parameters …
Contrast Enhancement Using Brightness Preserving Histogram Equalization Technique For Classification Of Date Varieties, G Thomas, A Manickavasagan, L Khriji, R Al-Yahyai
Contrast Enhancement Using Brightness Preserving Histogram Equalization Technique For Classification Of Date Varieties, G Thomas, A Manickavasagan, L Khriji, R Al-Yahyai
The Journal of Engineering Research
Computer vision technique is becoming popular for quality assessment of many products in food industries. Image enhancement is the first step in analyzing the images in order to obtain detailed information for the determination of quality. In this study, Brightness preserving histogram equalization technique was used to enhance the features of gray scale images to classify three date varieties (Khalas, Fard and Madina). Mean, entropy, kurtosis and skewness features were extracted from the original and enhanced images. Mean and entropy from original images and kurtosis from the enhanced images were selected based on Lukka's feature selection approach. An overall classification …
Effect Of Mineral Filler Type And Particle Size On The Engineering Properties Of Stone Mastic Asphalt Pavements, R Muniandy, E Aburkaba, R Taha
Effect Of Mineral Filler Type And Particle Size On The Engineering Properties Of Stone Mastic Asphalt Pavements, R Muniandy, E Aburkaba, R Taha
The Journal of Engineering Research
This study examines four types of industrial and by-product waste fillers, namely limestone dust (LSD), which was the reference filler; ceramic waste dust (CWD); coal fly ash (CFA), and steel slag mixture (SSD). The filler consisted of an aggregate (10% of total weight) with three proportions: 100% passing 75μm, 50% passing 75μm/20μm, and 100% passing 20μm. Comprehensive laboratory tests were performed to determine the impact of different types and particle sizes of fillers on the engineering and mechanical properties of fine mastics and stone mastic asphalt mixture. The results indicate that the application of industrial by-products used as fillers improves …
Mobility Assisted Sensor Node Self-Deployment For Maximizing The Coverage Of Wireless Sensor Networks Using A Genetic Algorithm, Vv Juli, J Raja
Mobility Assisted Sensor Node Self-Deployment For Maximizing The Coverage Of Wireless Sensor Networks Using A Genetic Algorithm, Vv Juli, J Raja
The Journal of Engineering Research
Wireless sensor networks extend the capability to monitor and control far-flung environments. However, sensor nodes must be deployed appropriately to reach an adequate coverage level for the successful acquisition of data. Modern sensing devices are able to move from one place to another for different purposes and constitute the mobile sensor network. This mobile sensor capability could be used to enhance the coverage of the sensor network. Since mobile sensor nodes have limited capabilities and power constraints, the algorithms which drive the sensors to optimal locations should extend the coverage. It should also reduce the power needed to move the …
Ambient Air Quality Assessment Of Al-Mansoriah Residential Area In The State Of Kuwait, S.M. Al-Salem, A.A. Al-Fadhleeb, A.R. Khan
Ambient Air Quality Assessment Of Al-Mansoriah Residential Area In The State Of Kuwait, S.M. Al-Salem, A.A. Al-Fadhleeb, A.R. Khan
The Journal of Engineering Research
Air quality data (ground level ozone (O3 ), non-methane hydrocarbons (NMHC), methane (CH4 ), nitrogen oxide (NO), nitrogen dioxide (NO2 ), carbon monoxide (CO), hydrogen sulfide (H2 S) and sulfur dioxide (SO2 ) of a Kuwaiti residential area, Al-Mansoriah, were analyzed to evaluate and determine: (a) the exceedances of air quality from permissible limits set by the Kuwait Environment Public Authority (KUEPA), (b) the diurnal patterns of air pollutants, (c) the predominant sources of airborne pollutants in the surrounding area, and (d) the ''weekend effect'' on ozone levels. The dataset covered the period of five consecutive years, from January 2000 …
Biosorption Of Zinc On Immobilized Green Algae: Equilibrium And Dynamics Studies, D. Sheikha, I. Ashour, F.A. Abu Al-Rub
Biosorption Of Zinc On Immobilized Green Algae: Equilibrium And Dynamics Studies, D. Sheikha, I. Ashour, F.A. Abu Al-Rub
The Journal of Engineering Research
The efficacy of using blank alginate beads and immobilized dead algal cells for the removal of zinc ions from aqueous solutions was investigated. It was found that the sorption capacities were significantly affected by solution pH; with higher pH favoring higher zinc ion uptake. Dynamics and isotherm experiments were carried out at the optimal pH 5.0. Zinc uptake on either sorbent was found to be rapid where approximately 90% of the maximum zinc uptake occurred within the first 30 min in both cases of blank alginate and immobilized algal cells. The equilibrium data for the biosorption of zinc ions onto …