Article
Engineering, Chemical
Hamid Reza Pouretedal, Mehdi Shamsi, Darush Arabiyan
Summary: The Electrocoagulation (EC) method can effectively remove nitrocellulose (NC) fine particles from wastewater by optimizing parameters including current density, distance between electrodes, and initial pH. The ideal conditions for maximum removal efficiency (>80%) are a current density of 20 mA/cm(2), electrode distance of 1 cm, and initial pH of 7.
DESALINATION AND WATER TREATMENT
(2021)
Article
Environmental Sciences
Pratibha Gautam, Sunil Kumar, Shilpa Vishwakarma, Arun Gautam
Summary: This study investigates the treatability of leachate from hazardous waste landfills through electrocoagulation. The results show that electrocoagulation can effectively reduce the chemical oxygen demand (COD) of the leachate by up to 90% under optimized conditions. Significant reductions in other parameters were also observed. The findings suggest that electrocoagulation can be a viable alternative to energy extensive treatment technologies for managing leachate from hazardous waste landfills.
Article
Engineering, Environmental
Mitra Afshar Moghaddam, Kambiz Seyyedi
Summary: In this study, the electrocoagulation method was used to remove Sunset Yellow dye from aqueous media, and the effects of various process parameters on removal efficiency were investigated through Response Surface Method (RSM). The optimal conditions for the process were determined to be pH of 10, current density of 2.65 mA/cm(2), electrolysis time of 42.32 min, initial dye concentration of 20 mg/L, and effluent flow rate of 2.5 L/min. Under these optimal conditions, the efficiency of dye removal exceeded 99%.
WATER SCIENCE AND TECHNOLOGY
(2022)
Article
Environmental Sciences
S. Balasurya, Mohammad K. Okla, Hamada AbdElgawad, Abdullah A. AL-ghamdi, Mostafa A. Abdel-Maksoud, Saud S. Al-Amri, Mahmoud M. Y. Madany, S. Sudheer Khan
Summary: The study presents an innovative approach for sunlit driven heterostructure photocatalytic generation of H2O2 and removal of cefixime. This was achieved through the use of Mn/Mg doped CoFe2O4 modified CaCr2O4 deco-rated by Ag3PO4 quantum dots (Ag3PO4 QDs), which formed a p-n-p nano heterojunction. The study highlights the robust activity of the nano heterojunction and its significance for sustainable water treatment.
Article
Biochemistry & Molecular Biology
Nguyen Trong Nghia, Bui Thi Kim Tuyen, Ngo Thi Quynh, Nguyen Thi Thu Thuy, Thi Nguyet Nguyen, Vinh Dinh Nguyen, Thi Kim Ngan Tran
Summary: Removing antibiotics from water is crucial to prevent antibiotic resistance, protect ecosystems, and maintain the effectiveness of medications. A combination of ozone and electrocoagulation in wastewater treatment can improve contaminant removal, disinfection efficiency, and overall treatment effectiveness. This study optimized and modeled the removal of sulfamethoxazole (SMX) from water using an ozone-electrocoagulation (O-EC) system. Through experiments and numerical optimization, the optimal conditions for SMX removal were determined. A three-layer artificial neural network (ANN) was used to model the removal process, which followed a first-order kinetic model. The results suggest that the O-EC system is a potential approach for antibiotic removal from water.
Article
Engineering, Environmental
Yi Mao, Sarah Cotterill, David Morgan, Shane Regan, Yaqian Zhao
Summary: Irish peatlands are important for providing drinking water sources, but the runoff from these peatlands contains natural organic matter that hinders conventional treatment and can lead to the formation of potentially carcinogenic disinfection by-products. In this study, a low-cost and highly efficient electrocoagulation unit was used to treat raw peatland runoff. The response surface methodology was employed to optimize the operation variables, and the highest removal performance was achieved at the middle level of applied voltage and reaction time. The multi-objective optimization resulted in high removal rates of total organic carbon and color, with lower operating costs compared to previous studies.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Environmental Sciences
Muhammad Ali Khan, Nadeem Raza, Suryyia Manzoor, Ramsha Shuja, Hina Raza, Muhammad Imran Khan, Mudassar Azam, Abdallah Shanableh
Summary: The study evaluates the performance of a quaternary ammonium poly (2, 6-dimethyl-1,4-phenylene oxide) and polyvinyl alcohol (QPPO/PVA) based anion exchange membrane for the removal of cefixime, a third generation cephalosporin antibiotic, from hospital effluents. The membrane’s surface morphology is analyzed using scanning electron microscopy. Experimental parameters are optimized using Response Surface Methodology to determine the maximum uptake capacity (qe). The results indicate that the membrane effectively removes cefixime, with negligible traces remaining in the treated water samples.
Article
Chemistry, Physical
Abdullah Almajed, Dinesh Srirama, Arif Ali Baig Moghal
Summary: This study focused on determining the optimal levels of reinforcement fiber length, fiber dosage, and curing time for stabilized soil geotechnical parameters, using the response surface methodology. By conducting experiments on California bearing ratio (CBR) and unconfined compressive strength (UCS) with various stabilizer proportions and curing times, the study identified statistically significant models for optimal values, providing valuable insights for civil engineering projects.
Article
Chemistry, Multidisciplinary
Magori J. Nyangi, Yonas Chebude, Kessy F. Kilulya, Minu Andrew
Summary: The electrocoagulation process using hybrid aluminum-iron electrode effectively removed arsenic and fluoride from water, with optimized parameters leading to significant reductions in contaminant levels at a reasonable operating cost.
SEPARATION SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Patricia G. Lopez-Cardenas, Emmanuel Alcala, Juan Diego Sanchez-Torres, Elsie Araujo
Summary: In this paper, a data-driven approach using response surface methodology (RSM) is introduced for optimizing the design of highly sensitive hydrogen peroxide (H2O2) sensors based on self-supported nickel nanowire (Ni NW) arrays. The goal is to enhance sensor performance by customizing the length of Ni NW and optimizing the working conditions. The optimized sensor achieves a significant improvement compared to previous nanostructured sensors and standard planar sensors, highlighting the potential of RSM as a powerful tool for optimizing nanostructured sensors and accelerating the design-build-test cycle. The optimized H2O2 sensor can be applied in various fields, including the food industry, medical diagnostics, and environmental monitoring.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Construction & Building Technology
Ke Li, Yuansheng Wang, Xiao Zhang, Xuan Wang, Aimin Zhang
Summary: The raw materials ratio of magnesium oxychloride (MOC) cement was optimized using the response surface method (RSM) to improve its mechanical properties. The compressive strength of MOC cement was analyzed by single-factor tests, and the optimal ratio was determined to be 7.56:1:13.51 for MgO:MgCl2:H2O. Experimental results showed a 6.29% increase in compressive strength compared to the predicted values, with factors contributing to the high strength explained using X-ray diffraction and scanning electron microscopy.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Environmental Sciences
F. Ilhan, Y. Avsar, U. Kurt, A. Saral
Summary: Metal plating industry wastewater is highly toxic due to the presence of heavy metals and cyanide. Conventional chemical treatment methods are commonly used, but they result in the generation of hazardous sludge. In this study, a pilot scale electrocoagulation (EC) process was developed as an alternative. The effect of pH adjustment on the removal efficiency of the EC process was investigated, and significant removals of problematic heavy metals such as copper and nickel were achieved.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Environmental Sciences
Gholamreza Dehghan Noudeh, Mehdi Asdaghi, Negar Dehghan Noudeh, Maryam Dolatabadi, Saeid Ahmadzadeh
Summary: The study investigated the removal of antibiotic ceftriaxone (CTX) from hospital wastewater using a hybrid process of electrocoagulation (EC) and adsorption (AD). The response surface methodology (RSM) was employed to analyze the influences of various operating variables on the treatment efficiency. Under optimal conditions, a removal efficiency of 100% was achieved. The experimental results confirmed that the CTX concentration in the hospital wastewater was reduced to zero after applying the EC/AD hybrid process.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2023)
Article
Green & Sustainable Science & Technology
Khalid Ansari, Avinash Shrikhande, Mohammad Abdul Malik, Ahmad Aziz Alahmadi, Mamdooh Alwetaishi, Ali Nasser Alzaed, Ahmed Elbeltagi
Summary: This study investigates the optimal operation variables of an electro-coagulation filtration (ECF) system for treating domestic greywater. The results show that ECF significantly reduces pollutants load in greywater and achieves low energy consumption. The study also analyzes the characteristics of sludge properties and establishes a model to describe the experimental values.
Article
Chemistry, Analytical
Mohammad Hadi Movahhedtaher, Reza Ojani, Jahan-Bakhsh Raoof
Summary: A new electrocoagulation method using alternative anode-cathode Al-Al electrodes was utilized to reduce COD in petrochemical wastewater, with optimization and significant factors identified for efficient removal.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2022)
Article
Electrochemistry
Khaled Wassim Bourkeb, Oussama Baaloudj
Summary: This study discusses the possibility of obtaining ZnO film on graphite through electrodeposition, which shows great potential for applications such as photocatalysis and photodetectors. The electrodeposition process involves three steps: nitrate reduction, hydrogen gas formation, and ZnO deposition. The resulting ZnO/GO plate was found to be an n-type semiconductor with promising electrochemical properties.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2022)
Review
Environmental Sciences
Imen Assadi, Ahlem Guesmi, Oussama Baaloudj, Hichem Zeghioud, Walid Elfalleh, Naoufel Benhammadi, Lotfi Khezami, Aymen Amine Assadi
Summary: Despite the wide investigation of non-thermal plasma technologies for air treatment, research on the inactivation mechanism of viruses by NTPs is limited. Non-thermal plasma is considered a promising virus-inactivation technology due to its efficiency and environmental compatibility. This review explores the application of NTPs for virus inactivation in indoor air, focusing on mechanisms and experimental results.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Oussama Baaloudj, Noureddine Nasrallah, Rachida Bouallouche, Hamza Kenfoud, Lotfi Khezami, Aymen Amin Assadi
Summary: This study proposes a clean approach using a efficient photocatalyst for removing antibiotics from pharmaceutical wastewater. The photocatalytic properties of the catalyst were optimized using an artificial neural network method, and the degradation mechanism was investigated. The results showed high efficiency of this catalyst in removing antibiotics.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Multidisciplinary
H. Kenfoud, N. Nasrallah, O. Baaloudj, F. Derridj, M. Trari
Summary: In this study, BaFe2O4 nanoparticles with a crystallite size of 86 nm were synthesized and used for the photoreduction of chromate. Characterization of the BaFe2O4/SnO2 hetero-system confirmed a reduction efficiency of 99% for Cr(VI). Overall, the findings suggest that the BaFe2O4/SnO2 showed promising photocatalytic activity for environmental remediation.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Materials Science, Ceramics
Yasmine Benrighi, Noureddine Nasrallah, Toufik Chaabane, Hadjar Belkacemi, Khaled Wassim Bourkeb, Hamza Kenfoud, Oussama Baaloudj
Summary: This research aimed to synthesize a photocatalyst with a narrow bandgap and investigate its potential for removing dyes from wastewater. The spinel CuCr2O4 (CCO) was chosen as the catalyst and synthesized through the sol-gel method. The synthesized CCO was characterized and tested for its photocatalytic activity, achieving a degradation efficiency of 97% for Sunset Yellow (SY) under optimal conditions.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Environmental Sciences
A. Modwi, L. Khezami, M. G. Ghoniem, P. Nguyen-Tri, O. Baaloudj, A. Guesmi, F. K. AlGethami, M. S. Amer, A. A. Assadi
Summary: The research successfully synthesized a mesopomus composite with high surface area and superior adsorption capacity, and investigated its efficacy in removing hazardous dyes from water through adsorption experiments at different pH levels. The results showed that the composite had excellent removal efficiency for CR and BF dyes, fitting well with pseudo-second-order kinetics and Langmuir model.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Physical
Hamza Kenfoud, Noureddine Nasrallah, Oussama Baaloudj, Chemseddine Belabed, Toufik Chaabane, Mohamed Trari
Summary: This study investigates the optical and photo-electrochemical properties of BaFe2O4 (BFO) nanoparticles and their role in photocatalytic degradation of an organic pollutant and hydrogen generation. The results show that BFO exhibits promising photocatalytic activity and stability, making it a potential candidate for hydrogen production and efficient degradation of organic pollutants.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Optics
Billal Brahimi, Elhadj Mekatel, Yassine Kadmi, Mounir Mellal, Oussama Baaloudj, Mohamed Belmedani, Mohamed Trari
Summary: The objective of this study is to synthesize and characterize the semiconductor NiCo2O4 and use it for the photodegradation of the BB41 dye. The study focused on the synthesis and characterization of NiCo2O4 and ZnO, followed by investigating the photodegradation performance of the NiCo2O4/ZnO hetero-system on BB41 dye. The results showed that under neutral pH, with a mass ratio of 25%/75% NiCo2O4/ZnO and a catalyst dose of 0.75 g/L, complete degradation of BB41 with a concentration of 10 mg/L could be achieved within 50 minutes.
Review
Environmental Sciences
Ahlem Guesmi, Mohamed Majdi Cherif, Oussama Baaloudj, Hamza Kenfoud, Ahmad K. Badawi, Walid Elfalleh, Naoufel Ben Hamadi, Lotfi Khezami, Aymen Amine Assadi
Summary: This article reviews the routes of virus contamination in water and introduces non-thermal plasma technology as a promising method for virus inactivation. It discusses the effects of key parameters on non-thermal discharge for viral inactivation and compares this technology with other advanced oxidation processes. The article also details the inactivation mechanisms based on reactive oxygen and nitrogen species.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Billal Brahimi, Elhadj Mekatel, Oussama Baaloudj, Mohamed Trari
Summary: A new synthetic method was established to enhance the photocatalytic activity of AgCl, successfully oxidizing a recalcitrant dye. The experimental results demonstrated a high photoactivity of 100% under specific conditions, showing promising application prospects.
WATER AIR AND SOIL POLLUTION
(2022)
Article
Chemistry, Physical
Abdoulaye Kane, Achraf Amir Assadi, Atef El Jery, Ahmad K. Badawi, Hamza Kenfoud, Oussama Baaloudj, Aymen Amin Assadi
Summary: Novel approaches are being applied to clean wastewater, with heterogeneous photocatalysis being the most widely used method. This study focuses on the photocatalytic degradation process of flumequine. By using immobilized titanium dioxide, different light intensities, and solvents, the factors influencing the degradation rate were investigated. The results showed highly effective removal of flumequine under optimal conditions, and the photocatalytic activity was further improved by combining an oxidized agent.
Article
Engineering, Environmental
Oussama Baaloudj, Ahmad K. Badawi, Hamza Kenfoud, Yasmine Benrighi, Raouf Hassan, Noureddine Nasrallah, Aymen Amine Assadi
Summary: This study proposes a method for cleaning pharmaceutical wastewater and evaluates the efficiency of a catalyst called BTO sillenite. The results show that BTO sillenite has high photocatalytic activity and commercial potential for large-scale applications in pharmaceutical wastewater treatment.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Chemical
Oussama Baaloudj, Noureddine Nasrallah, Hamza Kenfoud, Khaled Wassim Bourkeb, Ahmad K. Badawi
Summary: Sillenite catalysts combined with other materials, such as Polyaniline (PANI), have shown promising potential for efficient removal of pollutants from water. In this study, a hybrid system composed of BTO sillenite catalyst and PANI adsorbent was proposed for the removal of Cefixime (CFX) pollutant. Results showed that the hybrid system achieved almost 100% removal of 30 mg/L Cefixime concentration within only 2 hours, indicating the possibility of combining photocatalysis and adsorption processes for water pollution control.
Article
Environmental Sciences
Mahdi Asadi-Ghalhari, Saideh Usefi, Nassim Ghafouri, Amin Kishipour, Roqiyeh Mostafaloo, Fatemeh Sadat Tabatabaei
Summary: The application of the coagulation/flocculation process is crucial for its ability to remove turbidity easily. This study investigates the use of poly aluminum chloride (PAC) as a chemical coagulant and rice starch as a natural coagulant aid to remove turbidity from aqueous solutions.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2023)
Review
Chemistry, Physical
Achraf Amir Assadi, Oussama Baaloudj, Lotfi Khezami, Naoufel Ben Hamadi, Lotfi Mouni, Aymen Amine Assadi, Achraf Ghorbal
Summary: Indoor air quality is a major public health concern, and photocatalytic technology is a cost-effective and efficient method for deep air purification. This review focuses on recent studies that aim to improve the photocatalytic activity of TiO2-based materials for indoor air treatment and bacterial inactivation. Various TiO2-based catalysts, their properties, and advantages in the photocatalytic process are discussed, along with the use of doping and heterojunction techniques to enhance photocatalytic activity. The importance of combining catalysts to increase air treatment efficiency and the removal of volatile organic compounds (VOCs) and microorganisms are also summarized.
