Article
Engineering, Environmental
Jie Ren, Ruirui Li, Xuemiao Wang, Meng Li, Wu Yang
Summary: This study developed a hydrogel adsorbent for the removal of dye pollutants in dyeing wastewater. The hydrogel exhibited good adsorption performance towards various organic dyes and could spontaneously adsorb at ambient temperature. Additionally, it could be completely degraded by microorganisms in the soil.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2022)
Review
Engineering, Chemical
Anbalagan Saravanan, Ponnusamy Senthil Kumar, Gayathri Rangasamy
Summary: The water environment is heavily polluted by industrial advancements, and adsorption using metal-organic frameworks (MOFs) is a promising method for the removal of toxic contaminants. This review critically examines recent studies on the use of MOFs as efficient adsorbents and discusses the adsorption mechanism, challenges, and future advancements in this field.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Biochemistry & Molecular Biology
C. A. Rodriguez-Ramirez, Joana E. Tasque, Nancy Lis Garcila, Norma B. D'Accorso
Summary: Novel materials using biowaste as adsorbents in wastewater treatment have gained considerable interest. The synthesis of different hydrogels of crosslinked polyacrylamide in the presence of hemicelluloses with/without bentonite was presented. The resulting hydrogel showed promising adsorption properties for dye removal and reduced the use of non-renewable resources.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Green & Sustainable Science & Technology
Yi Zhang, Panlei Wang, Zawar Hussain, Hao Zhang, Haitao Wang, Na Chang, Fan Li
Summary: An environmentally friendly hydrogel adsorbent R-L-Gel was prepared by sol-gel methods, which exhibited high adsorption capacity and excellent adsorption performance.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Chemical
Valentina Buscio, Victor Lopez-Grimau, Bettina Valles, Montserrat Pepio, Carmen Gutierrez-Bouzan
Summary: The objective of this work was to determine the optimal conditions for electrooxidation treatment to decolourise effluents containing reactive dyes. The results showed that decolouration reactions followed first-order kinetics when Na2SO4 was used as the electrolyte. However, the first-order kinetics became stable after applying a minimal electric current when NaCl was present in the effluent. The models obtained from the results indicated that higher concentrations of NaCl resulted in lower energy consumption. On the other hand, increasing dye concentration led to higher electrical consumption. The pH was found to have no significant impact on decolouration efficiency. It is recommended to mix both effluents before treatment, especially when the dye concentration is high.
Article
Environmental Sciences
Seyed Vahid Mousavi, Parham Joolaei Ahranjani, Sara Farshineh Saei, Naser Mehrdadi, Gholamreza Nabi Bidhendi, Binta Hadi Jume, Shahabaldin Rezania, Amin Mojiri
Summary: The present study developed and evaluated nano-adsorbents based on zirconium oxide and graphene oxide as a novel adsorbent for the efficient removal of ammonia from industrial effluents. Various parameters were optimized and kinetic models and adsorption isotherms were used to verify the efficiency of the adsorbent.
Article
Polymer Science
Filomena Sannino, Elena Di Matteo, Mariarosaria Ambrosecchio, Domenico Pirozzi
Summary: Dyes are considered as significant contaminants that pose a threat to the environment and human life. The combination of chitosan hydrogels' adsorption capacity and the catalytic properties of laccase enzyme has been utilized to enhance the removal of contaminants from liquid streams. The adsorption efficiency of chitosan hydrogel was tested on three different textile dyes, with the effectiveness varying depending on the pH and characteristics of the dye. Immobilizing laccase onto chitosan has significantly improved the dye removal efficiency, regardless of the pH value.
Article
Environmental Sciences
Rahul Deka, Shristi Shreya, Megha Mourya, Vandana Sirotiya, Anshuman Rai, Mohd Jahir Khan, Ankesh Ahirwar, Benoit Schoefs, Muhammad Bilal, Ganesh Dattatraya Saratale, Justine Marchand, Rijuta Ganesh Saratale, Sunita Varjani, Vandana Vinayak
Summary: Microbial fuel cells can be used to treat textile wastewater and generate electricity, with the potential use of environmentally friendly algae biomass. Algae can not only treat dyes in wastewater, but also act as a metal-consuming part in the microbial fuel cell.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Jacqueline R. Nascimento, Katia C. H. Bezerra, Tiago D. Martins, Elma N. V. M. Carrilho, Christiane de A. Rodrigues, Georgia Labuto
Summary: Fabric dyeing wastewater containing reactive dyes can be effectively removed using various adsorbents, with yeast waste showing the best sorption capacity for the dyes studied. Different adsorbate:adsorbent systems exhibited varying kinetic models and isotherm models to explain the experimental phenomena.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Physical
Abida Kausar, Sana Ijaz, Mariam Rafaqat, A. Dahshan, Asma Abdul Latif, Shamsa Bibi, Nada S. Al-Kadhi, Siham A. Alissa, Arif Nazir, Munawar Iqbal
Summary: In this study, a chitosan-cellulose composite was prepared and used for the adsorptive removal of Reactive Red 195 and Reactive Red 2 dyes from wastewater. The adsorption parameters were optimized, and the composite was characterized using Fourier Transform Infrared Spectroscopic analysis. The results showed that the composite had good adsorptive efficiency and could be used for dye removal in wastewater treatment.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Environmental Sciences
Purbasha Saha, Akella Sivaramakrishna, Kokati Venkata Bhaskara Rao
Summary: Textile effluent is a hazardous industrial pollutant that contains toxic reactive azo dyes. Conventional treatments are ineffective, but a bacterial consortium called VITPBC6 showed potential in degrading the dye using a cocktail of enzymes. The biodegradation resulted in the formation of less toxic aromatic compounds.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Nanoscience & Nanotechnology
Vishal Sharma, Vijay Kumar, Sonal Choudhary, Kashma Sharma
Summary: The suitability and efficacy of a biodegradable gellan gum (GG)-based hydrogel as an adsorbent for malachite green (MG) and methylene blue (MB) dyes were thoroughly investigated. The hydrogel showed a high adsorption capacity for both dyes. The neutralized charge of the hydrogel played a crucial role in enhancing the dye removal. The reusability of the hydrogel in wastewater treatment processes was also demonstrated, making it a low-cost and efficient alternative for dye removal.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Applied
Nadia Banitorfi Hoveizavi, Mahmoud Feiz
Summary: Two new azo reactive disperse dyes were synthesized using cyanuric chloride as a reactive component for dyeing nylon fabric. The dyes were characterized and their structures confirmed by various analytical techniques. The dyes demonstrated good color uniformity and build-up on nylon 6 and wool fabrics, and showed higher color yield compared to corresponding disperse dyes. However, their fastness properties were lower than those of reactive disperse dyes due to limited reaction with the fabric surface.
Article
Engineering, Electrical & Electronic
M. Antony Arockiaraj, G. Mani, Zeid A. ALOthman
Summary: The bare iron oxide (IO) and iron oxide/chitosan (IOC) nanocomposites were prepared and characterized. The IOC composites showed high efficiency in removing organic contaminants from wastewater, with over 99% degradation rate for methylene violet (MV) and 71% degradation rate for rhodamine B (RhB).
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Environmental Sciences
S. Senguttuvan, V Janaki, P. Senthilkumar, S. Kamala-Kannan
Summary: The study synthesized a polypyrrole/zeolite nanocomposite with good adsorption properties for the effective removal of Reactive blue and Reactive red dyes from synthetic solutions. Results showed that the composite exhibited excellent adsorption performance under optimized conditions and maintained stable adsorption capacity for multiple cycles.