Article
Chemistry, Multidisciplinary
Meriem Kasbaji, Mehdi Mennani, Abdelghani Boussetta, Nabil Grimi, Francisco J. Barba, Mohamed Mbarki, Amine Moubarik
Summary: This study for the first time used biomass residues and algal wastes to produce efficient adsorbents for the removal of methylene blue dye from water. The bio-sorbents showed good physicochemical features and efficiency, and the adsorption process was found to be exothermic and spontaneous.
SEPARATION SCIENCE AND TECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Betul Tuba Gemici, Handan Ucun Ozel, Halil Baris Ozel
Summary: In this study, the removal of methylene blue dye using forest wastes, specifically white willow and weeping willow, through the adsorption method was investigated. The study determined the optimal adsorption conditions, the most suitable kinetic model, and the thermodynamic feasibility of the biosorption process. The results showed that both adsorbents are highly effective in removing methylene blue.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Environmental Sciences
Guobin Song, Anqi Li, Yawei Shi, Wanran Li, Haonan Wang, Chunchao Wang, Ruijuan Li, Guanghui Ding
Summary: In this study, five magnetic multi-walled carbon nanotubes with different diameters were prepared and their performance in removing methylene blue from water was investigated. The surface of these nanotubes was decorated with Fe3O4 nanoparticles, making them superparamagnetic. The results showed promising potential for these nanotubes as adsorbents for dye removal in wastewater treatment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Materials Science, Ceramics
Hongli Liu, Bo Gao, Wenjin Yuan, Hongyan Li, Jing Li, Yajing Li, Bo Zhang, Zhong Chen
Summary: Titania nanotubes with high length-diameter ratio are incorporated into reduced graphene oxide aerogel to modify the porous structure for efficient methylene blue adsorption. The composite aerogel shows favorable adsorption properties with a high specific surface area, and the adsorption process is influenced by the adsorbent dosage.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Yue Yang, Wenyu Zhu, Chengli Guan
Summary: In this study, nitric acid-modified multi-walled carbon nanotubes (MWCNTs) were used as efficient adsorbents for the removal of methylene blue (MB) in aqueous solution. The experiments demonstrated that the modified MWCNTs had a high efficiency for adsorption of MB, with Freundlich and Langmuir isotherms fitting well to the experimental data. The adsorption process followed pseudo second-order kinetics.
Article
Materials Science, Textiles
Moussa Abbas
Summary: This study aims to eliminate the dangerous dye Methylene blue (MB) by adsorption using a low-cost zeolithe in the textile industry. The zeolithe adsorbent exhibited good adsorption capacity and efficiency in removing reactive dyes from aqueous solutions. Kinetic and isotherm modeling showed that the pseudo-second-order kinetic model and Langmuir isotherm provided the best fit to the experimental data. The study also investigated the nature of MB adsorption through the determination of free energy, enthalpy, and entropy.
JOURNAL OF ENGINEERED FIBERS AND FABRICS
(2022)
Article
Environmental Sciences
S. M. Lee, M. F. M. Yusop, W. L. Ng, M. A. Ahmad, S. H. Tan
Summary: This study successfully synthesized PET and PET/MWCNT adsorbents for the adsorption of dye pollutant methylene blue (MB). PET/MWCNTs showed higher adsorption capacity and removal percentage. The adsorption capacity decreased but the removal percentage increased with increasing adsorbent dosage.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Paper & Wood
Maria Hadid, Hassan Noukrati, Hicham Ben Youcef, Allal Barroug, Houssine Sehaqui
Summary: Phosphorylation of cellulose using environmentally friendly chemicals leads to a negatively charged material with high adsorption capacity for methylene blue in water purification. Different cellulose sources exhibit varying degrees of functionalization and methylene blue removal efficiency, with wood cellulose showing the highest phosphorylation degree and adsorption properties. The possibility of regenerating the used sorbent by washing it with phosphate ions is demonstrated with a 97% regeneration rate.
Article
Chemistry, Multidisciplinary
Ahmed Bakry, Salwa M. Elmesallamy
Summary: This study investigated the effectiveness of converting polypropylene waste into sulfonated microparticles for removing dyes from wastewater. The results showed that waste PP can be recycled into a valuable adsorbent for the removal of cationic dyes from polluted water after proper treatment such as sulfonation.
SEPARATION SCIENCE AND TECHNOLOGY
(2022)
Article
Energy & Fuels
Mathew C. Holliday, Daniel R. Parsons, Sharif H. Zein
Summary: This paper investigates the potential of green pea haulm as a biosorbent for methylene blue dye. Various factors including particle size, contact time, agitation, dosage, solution pH, temperature, and initial dye concentration were examined to determine their impacts on the adsorption performance. The results show that green pea haulm is an effective adsorbent with a relatively high adsorption capacity. The best fitting kinetic and isotherm models were found, and the thermodynamic properties were identified. The study suggests that green pea haulm may find potential application in wastewater treatment.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Engineering, Multidisciplinary
Shahir Hussain, Md Mottahir Alam, Mohd Imran, Mohammad Ashraf Ali, Tansir Ahamad, Ahmed S. Haidyrah, Sami M. A. Raji Alotaibi, Mehraj-ud-din Naik, Mohammad Shariq
Summary: MWCNTs decorated with Fe3O4 nanoparticles were synthesized through a one-step co-precipitation method, resulting in a nanocomposite with improved optical properties. The nanocomposite exhibited a lower bandgap compared to pure Fe3O4 nanoparticles reported in the literature. Photodegradation experiments showed that MB could be effectively degraded by Fe3O4 MWCNTs NC as a photocatalyst, with a maximum removal efficiency of 98.49% achieved in just 60 minutes. The charge transport kinetics and mechanism of MB photodegradation process were also studied, revealing suppressed electron-hole pair recombination and high charge separation efficiency as contributing factors to the efficient photocatalytic degradation of MB.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Anitha Thulasisingh, Seenuvasan Muthulingam, Mohan Kumar, Naveenraj Rajasekar, Shantanu Mohanraj, Carlin Geor Malar
Summary: Biosorption using a chitosan-pectinase blend (CPB) was studied for the removal of methylene blue (MB) dye from synthetic solutions. The blend showed a rough surface morphology and amorphous nature. Fourier-transform infrared (FTIR) analysis confirmed the successful blend formation. Maximum adsorption was achieved at pH 7.0, 30°C, 30 min contact time, and an adsorbent dosage of 2.5 g/L. The pseudo-second-order model provided the best fit, with the highest R2 value close to 1. The Temkin isotherm model showed the highest adsorption capacity at 16.81 mg/g. The blend demonstrated good desorption ability, allowing for reuse in dye removal.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Megha Saxena, Amit Lochab, Reena Saxena
Summary: The novel Asp-CNT synthesized in this study showed high adsorption capacity for MG and MB dyes, with maximum adsorption under optimized conditions. Kinetic and equilibrium studies indicated that the adsorption process followed pseudo second order and Langmuir model, demonstrating monolayer adsorption via chemisorption. The ability to easily regenerate the adsorbent and reuse it for multiple cycles makes it a promising candidate for large scale wastewater treatment.
SURFACES AND INTERFACES
(2021)
Article
Environmental Sciences
Wafa K. Essa, Suhad A. Yasin, Anwar H. Abdullah, Mohammad R. Thalji, Ibtisam A. Saeed, Mohammed A. Assiri, Kwok Feng Chong, Gomaa A. M. Ali
Summary: A membrane consisting of a composite of polyethylene terephthalate nanofiber and multi-walled carbon nanotubes is used to adsorb methylene blue dye from an aqueous solution. The study examines the surface properties of the adsorbent and optimizes parameters such as pH, dye concentration, adsorbent dose, and contact time for efficient removal. The results show that pH has the highest impact on removal efficiency, followed by adsorbent dose, dye concentration, and contact time. The Langmuir isotherm and pseudo-second-order kinetic model are well-suited to describe the adsorption process.
Article
Chemistry, Physical
Zuleyha Bingul
Summary: The study investigated the removal of methylene blue dye using natural clay and found that the Langmuir isotherm model was suitable for describing the adsorption process. The highest removal efficiency was achieved with 0.3 g L-1 adsorbent concentration and 20 mg L-1 dye concentration, reaching 94.69%.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Materials Science, Ceramics
Oykum Banoz, Omer Guler
CERAMICS INTERNATIONAL
(2020)
Article
Engineering, Electrical & Electronic
Omer Guler, Cagdas Yavuz, Oykum Basgoz, Serdar Altin, Ibrahim S. Yahia
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2020)
Review
Materials Science, Multidisciplinary
Omer Guler, Nihal Bagci
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2020)
Article
Physics, Multidisciplinary
Omer Guler, Harun Katmer
EUROPEAN PHYSICAL JOURNAL PLUS
(2020)
Article
Engineering, Electrical & Electronic
Omer Guler, Ali Sonmez
JOURNAL OF ELECTRONIC MATERIALS
(2020)
Article
Engineering, Electrical & Electronic
Omer Guler, Hakan Ayhan, Oykum Basgoz, Cagdas Yavuz, M. Gokhan Albayrak, Ertan Evin, Hasan Safa, Ibrahim S. Yahia
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2020)
Article
Materials Science, Composites
Omer Guler, Nihal Bagci, Seval Hale Guler, Canan A. Canbay, Hasan Safa, Taha A. Yilmaz, Mustafa Taskin
Summary: The research found that increasing the amount of graphene can improve the electrical, thermal, and mechanical properties of the composite materials, but too much graphene may cause fractures during the ECAP process. Significant improvements were observed in the properties of the composites after ECAP processing, and low amounts of graphene reinforcement can help the composites better respond to the ECAP process.
JOURNAL OF COMPOSITE MATERIALS
(2021)
Article
Materials Science, Ceramics
Omer Guler, Veyis Selen, Oykum Basgoz, Hasan Safa, Ibrahim S. Yahia
Summary: Silica aerogel-hollow silica microsphere sandwich structure was successfully synthesized as an adsorbent for dye removal from aqueous solutions, showing high adsorption efficiency and potential for further development with increased adsorption capacity.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Omer Guler, Tuncay Simsek, Iskender Ozkul, Baris Avar, Canan A. Canbay, Arun K. Chattopadhyay, Seval H. Guler
Summary: High entropy alloy (HEA) with shape memory effect and multi elemental high entropy shape memory alloys (HESMA) have attracted significant research interest. The study successfully developed nano-crystalline HEA powder with shape memory effect through mechanical alloying. Thermal analysis revealed that enthalpy values, equilibrium temperature (T0), and crystallization temperature values decreased with increasing milling time.
CURRENT APPLIED PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Telem Simsek, Iskender Ozkul, Canan Aksu Canbay, Baris Avar, Tuncay Simsek, Seval Hale Guler, Sadan Ozcan, Omer Guler, Arun K. Chattopadhyay
Summary: This study discusses the structural, morphological, thermal, and magnetic properties of equiatomic CoNiMnGaSi (base), CoNiMnGaSiCu, CoNiMnGaSiSn, and CoNiMnGaSiSb alloys. XRD and DTA techniques were used to determine the formation of a solid-solution nanocrystalline bcc structure. SEM-EDS analyses showed the homogeneous distribution of elements. The addition of Cu and Sn decreased the saturation magnetization, while the addition of Sb had no significant effect. CoNiMnGaSiSb exhibited the highest Curie Temperature of 670 K, making it a promising candidate for power industry-related applications.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Multidisciplinary
Betuel Cicek Ozkan, Veyis Selen, Feyza Guelyuez, Guelbeyi Dursun
Summary: The photocatalytic degradation of reactive black 5 (RB5) by TiO2 and ZnO under UVC irradiation was compared. The study investigated the effect of initial solution pH, catalyst concentration, initial RB5 concentration, purging oxygen rate, stirring rate, and process temperature on the degradation process. Total organic carbon (TOC) analysis was used to detect organic intermediates and evaluate the photodegradation performance. TiO2 exhibited faster RB5 photodegradation than ZnO, resulting in the generation of more organic intermediates. XRD and FE-SEM techniques were used for structural and morphological analysis, while UV-vis spectroscopy measurements confirmed the superior photocatalytic activity of TiO2 for RB5 degradation compared to ZnO.
Article
Materials Science, Composites
Omer Guler, Nazli N. Cacim, Ertan Evin, Ibrahim S. Yahia
Summary: Carbon nanotubes (CNTs) have been utilized as reinforcing materials in concrete matrices, where their strength properties were enhanced through the use of water-soluble polymeric surfactants. The addition of CNTs at low concentrations, such as 0.05 wt%, resulted in a significant increase in concrete strength, with PVA surfactant showing the highest effectiveness. This approach allows for the creation of new generation concrete with higher strength and lighter weight for real-world applications.
JOURNAL OF COMPOSITE MATERIALS
(2021)
Article
Multidisciplinary Sciences
Veyis Selen, Omer Guler
Summary: This study investigated the adsorption of Congo Red dye from aqueous solutions using multi-walled carbon nanotubes as an adsorbent. Response surface methodology was employed to optimize the process, showing high removal efficiency and good agreement between experimental and model predicted responses. Kinetic studies revealed a well-defined pseudo-second-order adsorption model, while thermodynamic parameters indicated favorable adsorption process.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2021)
