Article
Biochemistry & Molecular Biology
Fatma H. A. Mustafa, Ebtsam Kh. M. Gad ElRab, Rasha M. Kamel, Reda F. M. Elshaarawy
Summary: Chitosan/aspartic acid hydrogels were synthesized for the removal of MB dye from textile aqueous effluents. The hydrogels were characterized and confirmed to have successful preparations and MB dye adsorption. Batch experiments were conducted to investigate the effects of various factors on the adsorption process. The optimized conditions were determined for each hydrogel. The adsorption capacities of the hydrogels were compared, and both followed Freundlich isotherm model and pseudo-second-order kinetics for adsorption.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Environmental Sciences
Fazal Haq, Arshad Farid, Naveed Ullah, Mehwish Kiran, Rizwan Ullah Khan, Tariq Aziz, Sahid Mehmood, Muhammad Haroon, Muhammad Mubashir, Awais Bokhari, Lai Fatt Chuah, Pau Loke Show
Summary: This study focused on the removal of methylene blue from aqueous solution using Car-St-g-PVP as a cost-effective and biodegradable adsorbent. The experimental results showed that the adsorption process followed pseudo 2nd order kinetics and Langmuir's adsorption isotherms, indicating a chemisorption mechanism. Thermodynamic studies revealed a spontaneous nature of the adsorption process, with increasing randomness and endothermic nature as indicated by positive entropy and enthalpy values. The separation factor (RL) was less than one, confirming the feasibility of the adsorption process. Overall, Car-St-g-PVP demonstrated high efficiency in removing methylene blue and could be a promising option for wastewater treatment.
ENVIRONMENTAL RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Linh Doan
Summary: Methylene blue (MB) is a toxic synthetic dye that needs to be removed from water supplies. In this study, superparamagnetic iron oxide nanoparticles were used as an adsorbent to effectively remove MB. The adsorption process and release mechanism were investigated, providing valuable insights for further optimization and development of different forms of adsorbents.
Review
Chemistry, Multidisciplinary
Mohammed Benjelloun, Youssef Miyah, Gulsun Akdemir Evrendilek, Farid Zerrouq, Sanae Lairini
Summary: The increased environmental awareness and tighter regulatory standards have led various industries to seek appropriate wastewater treatment technologies for colored wastewater. This review provides detailed information on dyes, their classification, the environmental impact of water pollution, and the use of adsorption technology as a sustainable solution for dye removal. Studies evaluating the effectiveness of different adsorbents, particularly low-cost ones, in removing dyes from aqueous solutions are highlighted.
ARABIAN JOURNAL OF CHEMISTRY
(2021)
Article
Environmental Sciences
Oluwadamilola R. Mustapha, Temitope M. Osobamiro, Nurudeen O. Sanyaolu, Oluwatobi M. Alabi
Summary: This study evaluates the adsorptive capacity of elephant grass (EG) in the removal of Methylene blue (MB) dye from wastewater sourced from two major local dyeing industries in Ogun State, Nigeria. The study found that EG is an effective adsorbent for the removal of MB dye, suggesting its potential use in wastewater treatment in the dyeing industry.
INTERNATIONAL JOURNAL OF PHYTOREMEDIATION
(2023)
Article
Polymer Science
Abdallah Tageldein Mansour, Ahmed E. Alprol, Khamael M. Abualnaja, Hossam S. El-Beltagi, Khaled M. A. Ramadan, Mohamed Ashour
Summary: The dried brown seaweed Sargassum latifolium was tested for its ability to remove toxic Methylene Blue Dye (MBD) ions from aqueous solutions and wastewater. The study investigated the effects of various experimental conditions on the adsorption process, and characterized the seaweed before and after adsorption using different techniques. The results showed that Sargassum latifolium had a high adsorption capacity for MBD, making it a promising and cost-effective method for removing dyes from aqueous solutions.
Article
Chemistry, Physical
Guibin Shi, Chichi Ruan, Song He, Hongjie Pan, Guanyu Chen, Yuansheng Ma, Huaming Dai, Xianfeng Chen, Xiaobing Yang
Summary: A novel and flexible paper-based filtration material, CMP-UiO-66, was successfully synthesized in this study to effectively capture methylene blue dye molecules. The material showed excellent removal efficiency and could be easily reused, making it a promising adsorbent for dye removal applications. The removal mechanisms involved physical interactions and chemical interactions under different conditions, as studied through various characterization techniques and thermodynamic analysis.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
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
Materials Science, Multidisciplinary
Alaa Salah Omer, Gamal A. El Naeem, A. I. Abd-Elhamid, Omaima O. M. Farahat, Ali A. El-Bardan, Hesham M. A. Soliman, A. A. Nayl
Summary: Biodegradable cellulose based on sugarcane bagasse was prepared and utilized for dye removal. The effects of various factors on the adsorption processes were investigated, and the treated sugarcane bagasse showed high adsorption capacity for Crystal violet and Methylene blue dyes. The adsorption processes were identified as physisorption, and the kinetic data followed the pseudo-second order model. The results suggest that TSCB is an effective, environmentally friendly, and low-cost material for removing cationic dyes.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Environmental Sciences
Z. Recber
Summary: This study investigates the removal of methylene blue dye from aqueous solutions using spent Alchemilla Vulgaris leaves. The effects of various factors on the adsorption efficiency were examined, and the adsorption data were evaluated using different models. The results show that the highest removal efficiency was achieved under specific conditions. Kinetic study reveals that the adsorption of methylene blue follows pseudo-second-order kinetics. Additionally, the enthalpy and entropy of the reaction were determined.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Environmental Sciences
Fazal Haq, Mehwish Kiran, Sampath Chinnam, Arshad Farid, Rizwan Ullah Khan, Ghazanfar Ullah, Ahmed Muteb Aljuwayid, Mohamed A. Habila, Muhammad Mubashir
Summary: Novel starch phosphate grafted polyvinyl imidazole (StP-g-PIMDZs) was synthesized by attaching a phosphate group to starch polymer and grafting 1-vinyl imidazole onto the backbone of starch phosphate. The modified starches showed diminished crystallinity and increased thermal stability. They also exhibited high adsorption capacity for methylene blue dye, with StP-g-PIMDZ 3 achieving a maximum removal percentage of 95.4%. The adsorption process followed a pseudo second order kinetic model and Langmuir adsorption isotherm, and was thermodynamically feasible, spontaneous, endothermic, and favored chemi-sorption mechanism.
Article
Chemistry, Physical
Giannin Mosoarca, Simona Popa, Cosmin Vancea, Sorina Boran
Summary: Dry bean pods husks were employed as an adsorbent to remove methylene blue from aqueous solutions without the use of chemical substances or thermal treatment. The adsorbent characteristics were analyzed using SEM and FTIR, and the Taguchi method was utilized to optimize parameters affecting dye adsorption. Equilibrium and kinetic modeling indicated a physical adsorption process with Langmuir isotherm and pseudo-second order kinetics. The thermodynamic studies showed a spontaneous, favorable, and endothermic adsorption process, with the adsorbent displaying a higher adsorption capacity than other similar materials.
Article
Engineering, Multidisciplinary
Dai Nan, Feng Li, Zhao Li, Song Dan, Dai XingJian, Liu XiaoYing, Zhang YuXin
Summary: In this study, a one-step hydrothermal method was used to synthesize two-dimensional layered Laponite nanosheets on the three-dimensional biological template diatomite. The adsorption performance of the synthesized Laponite@diatomite nano-adsorbent for cationic dye removal was investigated. The results showed that La@D-0.1 had the highest adsorption efficiency and exhibited excellent adsorption capability for methylene blue solution. This work provides a novel idea for the synthesis of an economical and ideal nano-adsorbent for cationic dyes and its potential application in wastewater purification.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2022)
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
Engineering, Chemical
Tushar Kanti Sen
Summary: In this study, raw pine tree leaf biomass was used as an adsorbent to remove methylene blue dye from water under varying physicochemical conditions. The adsorbent's characteristics, such as particle size, surface area, presence of functional groups, and morphology, were determined. Adsorption experiments were conducted at different process conditions, including solution pH, dye concentration, adsorbent dosage, and temperature. The Langmuir isotherm model best fit the experimental data, indicating favorable adsorption. The study found that the adsorption capacity of raw pine leaf was comparable to other reported adsorbents. Thermodynamic parameters suggested that the adsorption of methylene blue by pine tree leaf biomass was spontaneous and mainly physical in nature. The results of this study could contribute to the utilization of pine tree leaf waste for water purification.
Article
Engineering, Chemical
Lamia Hamdi, Leila Boumehdi Toumi, Zineb Salem, Khedidja Allia
DESALINATION AND WATER TREATMENT
(2016)
Article
Environmental Sciences
L. Hamdi, L. Boumehdi, Z. Salem
Summary: The purpose of this paper is to investigate the adsorption capacity of alfa stems to remove basic blue 41 from aqueous solutions using experimental design technique. The study focused on the variation of initial dye concentration, contact time, adsorbent dose, solution pH and ionic strength. The adsorption equilibrium and kinetic data were analyzed using the Temkin isotherm and pseudo-second-order kinetic model. The thermodynamic study confirmed the exothermic, feasible and non-spontaneous nature of the reaction. The factorial experimental design technique was used to optimize operational parameters on the adsorption process. The novelty of this research lies in the exclusive use of the downward step-wise regression technique to choose the best-fit model. The maximum adsorption capacity on alfa was achieved at specific conditions.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
