Article
Environmental Sciences
Meryem El Rharib, Konouz Hamidallah, Zaina Zaroual, Sanae Elghachtouli, Mohammed Azzi
Summary: This study investigated a natural Moroccan material from the Nador area as an adsorbent for the removal of methyl violet 2B dye from aqueous solutions. The material was characterized and its adsorption properties were determined. The results showed that the material had a high adsorption capacity and could be efficiently used for dye removal.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Muhammad Sajid Imran, Tariq Javed, Isham Areej, Muhammad Nouman Haider
Summary: This study explores the effectiveness of coconut husk for crystal violet dye sequestration, with maximum removal of 81% occurring at optimized conditions. The rough and porous nature of coconut husk, along with specific functional groups, are found to be responsible for the adsorption of dye.
WATER SCIENCE AND TECHNOLOGY
(2022)
Article
Polymer Science
Giannin Mosoarca, Cosmin Vancea, Simona Popa, Mircea Dan, Sorina Boran
Summary: This study investigates the use of a new eco-friendly adsorbent made from motherwort biomass for the removal of crystal violet dye from aqueous solutions. The adsorbent exhibits high adsorption capacity and is influenced by various factors such as initial dye concentration, contact time, temperature, pH, adsorbent dose, and ionic strength. The adsorption process follows a general order kinetic model and is found to be endothermic, spontaneous, and favorable. pH is identified as the most influential parameter, contributing to 61.64% of the adsorption process. The findings demonstrate that motherwort biomass powder is a cost-effective, readily available, and effective adsorbent for crystal violet dye removal.
Article
Chemistry, Physical
Xu Zhang, Renjuan Liu, Hai Wang, Longcheng Liu, Chengtao Yue
Summary: In this study, a series of phosphate-containing mesoporous carbon (PC) were successfully fabricated and they showed high content phosphate group, large specific surface area, and tunable mesoporous structure. The PC exhibited efficient adsorption of uranium at a wide pH range, with a maximum uptake capacity of 928 mg g -1, ranking as one of the most effective adsorbents. The mesoporous structure of PC allowed for rapid adsorption equilibrium within 60 seconds and excellent adsorption selectivity. Furthermore, the PC showed good recyclability and could be used for dynamic column adsorption of uranyl (VI) ion from uranium-containing solution. The excellent adsorption performances of PC highlight their great potential in uranium extraction.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Environmental Sciences
M. Loganathan, Arya S. Raj, A. Murugesan, P. Senthil Kumar
Summary: This study focuses on synthesizing aromatic polyimides for the removal of carcinogenic crystal violet, enhancing the adsorption efficiency by incorporating different functional moieties, and optimizing the adsorption process through various parameters. The experimental results confirm the effectiveness of the functionalized adsorbent for removing cationic dyes.
Article
Chemistry, Multidisciplinary
Anadil Gul, Raza Ullah, Jihong Sun, Tallat Munir, Shiyang Bai
Summary: Novel mesoporous TiO2/BMMs nanocomposites with bimodal mesoporous silica (BMMs) as support and rutile-anatase mixed phase as active species were successfully synthesized, showing enhanced photocatalytic degradation activity. TBH5c may be a suitable candidate for wastewater treatment.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Susanne P. Druzian, Natalia P. Zanatta, Renata K. Borchardt, Leticia N. Cortes, Angelica F. M. Streit, Eric C. Severo, Janaina O. Goncalves, Edson L. Foletto, Eder C. Lima, Guilherme L. Dotto
Summary: A new alternative aerogel was prepared from low-cost chitin and psyllium biopolymers, showing excellent adsorption capacity for crystal violet (CV) dye and potential for treating effluents containing other dyes. The aerogel exhibited a typical structure of amorphous materials with a porous network, achieving a high removal efficiency of CV from solutions and demonstrating competitive adsorption performance compared to other adsorbents. Tests using simulated effluent indicated the aerogel's excellent potential for treating real colored effluents.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Biotechnology & Applied Microbiology
Mohammad Nahid Siddiqui, Basheer Chanbasha, Abdurrahman A. Al-Arfaj, Tatiana Kon'kova, Imran Ali
Summary: The study demonstrates that using inexpensive functionalized porous carbon (PC-KF) as a sorbent can effectively remove Co2+ metal ions from water. Under optimized conditions, the sorbent shows fast removal and high removal efficiency, in accordance with various isotherm models.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Engineering, Environmental
Xiaochen Cheng, Chenyang Duan, Pei Yang, Yongrui Pi, Hailiang Qi, Zhengkang Sun, Shihua Chen
Summary: The discharge of crystal violet wastewater poses severe harm to the natural environment and human health due to its toxicity and carcinogenicity. The adsorption characteristics and mechanism of crystal violet on magnetic nanoparticles decorated bacteria were investigated, including the kinetic, equilibrium, mass transfer mechanism, and site energy distribution analysis. The results showed that Fe3O4 @bacteria had a high adsorption capacity for crystal violet, exhibited good recycling ability, and effectively reduced COD in dyeing wastewater. The adsorption process followed the Temkin isotherm and Elovich and pseudo-second-order kinetics models, and the mass transfer mechanism was described by the IPD model.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Chemistry, Physical
Alexander E. Burakov, Inderjeet Tyagi, Irina V. Burakova, Vitaly V. Milyutin, Natalya A. Nekrasova, Alexander V. Melezhik, Alexey G. Tkachev, Rama Rao Karri, Mohammad Hadi Dehghani, Suhas, Surendra K. Chandniha
Summary: The paper presents a new nanocomposite material, mesoporous carbon (MPC), and investigates its adsorption characteristics for Eu-152 in liquid radioactive waste. The experimental results demonstrate that MPC has high adsorption capacity and can be used for the removal of europium and other radionuclides in neutral solutions.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Engineering, Environmental
Jiayin Zhang, Yongde Ma, Wenquan Wu, Zhenping Cai, Yanning Cao, Kuan Huang, Lilong Jiang
Summary: Carboxylic functionalized mesoporous polymers synthesized through a one-pot solvothermal route exhibit fast, efficient, and selective adsorption of NH3. The mesoporous structure and acidic site concentration of these polymers can be adjusted, and the NH3 adsorption is highly reversible.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
A. Khan, S. Noor, M. S. Khan, R. Khattak, A. Malik, U. U. Rahman, I. Zekker, N. U. Rahman, L. A. Shah
Summary: Aromatic triarylmethane dyes residues cause serious water pollution in the environment. Adsorbents such as graphene oxide (GO) have been found to effectively remove crystal violet (CV) dye from wastewater. Different parameters and experimental results indicate that GO, graphite, and graphene quantum dots (GQDs) have high removal capacities for CV dye, with GQDs showing the highest efficiency. Thermodynamic and kinetic experiments suggest that the adsorption process is spontaneous, endothermic, and follows both pseudo-first and pseudo-second-order kinetics. The Langmuir adsorption isotherm model fits the adsorption data best, indicating chemisorption with single coverage layer.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Ali Boukhemkhem, Bamhammed Aissa-Ouaissi-Sekkouti, Jorge Bedia, Carolina Belver, Carmen B. Molina
Summary: This study investigated the adsorption efficiency of Tamazert kaolinite clay for crystal violet dye in a batch system. Non-linear models were used to study the kinetics and equilibrium of the adsorption process. The characterization of the clay showed that it has suitable properties for adsorption. Various process parameters were tested, and the pseudo-second order model was found to best fit the experimental data. The adsorption isotherms were fitted to different models, indicating that the adsorption is limited to a monolayer with a specific adsorption capacity. The thermodynamic study revealed that the process is exothermic, spontaneous, and accompanied by a decrease in entropy.
Article
Engineering, Environmental
Manman Wei, Fatma Marrakchi, Chuan Yuan, Xiaoxue Cheng, Ding Jiang, Fatemeh Fazeli Zafar, Yanxia Fu, Shuang Wang
Summary: In this study, activated carbon (ENAC) was prepared by NaOH activation using macroalgae as raw material, resulting in a material with a large surface area and total pore volume. The adsorption of tetracycline (TC) by ENAC followed the Langmuir model and pseudo-second-order kinetics, indicating its potential application in antibiotic removal from aqueous solutions.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Kheira Belkassa, Mounir Khelifa, Isabelle Batonneau-Gener, Kheira Marouf-Khelifa, Amine Khelifa
Summary: In this study, Halloysite was processed with different concentrations of HCl solutions and analyzed for its adsorption efficiency towards crystal violet. It was found that the optimal adsorption was achieved by balancing the hydrophilic and hydrophobic properties of the material, which could be controlled through treatment methods and conditions.
JOURNAL OF HAZARDOUS MATERIALS
(2021)