Article
Materials Science, Composites
Vahid Zeynali, Seyed Mahmoud Mousavi, Ehsan Saljoughi, Shirin Kiani, Mika Sillanpaa
Summary: This study focused on the fabrication of a novel chitosan/polyvinyl alcohol/hydroxyapatite (CPH) nanocomposite membrane and its application in removing Congo red (CR) from aqueous solutions. Adsorption tests were conducted on the optimized nanocomposite membrane containing 1 wt% hydroxyapatite after proper characterization. The impact of various factors on adsorption, such as temperature, contact time, initial dye concentration, adsorbent dosage, and pH, was investigated. Langmuir isotherm and pseudo-second order kinetics were found to best fit the experimental results, with an adsorption capacity of 491 mg/g.
POLYMER COMPOSITES
(2023)
Article
Multidisciplinary Sciences
Nitish Semwal, Divya Mahar, Manjunath Chatti, Anirban Dandapat, Mahesh Chandra Arya
Summary: In this study, Ag-Cu-CeO2 nanocomposites were synthesized and investigated as adsorbents for the removal of Congo Red dye from water. The 15:15:70 composition of the nanocomposites showed the highest adsorption capacity and removal rate, and exhibited excellent performance under different conditions. The results indicate that Ag-Cu-CeO2 nanocomposites have great potential as effective and eco-friendly adsorbents for the removal of Congo Red dye from water.
Article
Engineering, Environmental
Jibran Iqbal, Noor S. Shah, Murtaza Sayed, Nabeel Khan Niazi, Muhammad Imran, Javed Ali Khan, Zia Ul Haq Khan, Aseel Gamal Suliman Hussien, Kyriaki Polychronopoulou, Fares Howari
Summary: The composite of nZVMn and PBC showed higher adsorption capacity for CR compared to PBC alone, and the addition of H2O2 further enhanced the removal efficiency. The study also revealed the formation of non-toxic inorganic acetate products during the degradation process, indicating the potential of the new adsorbent for CR removal.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Kavita Kulkarni, Sunny Kurhade, Yogesh Chendake, Anand Kulkarni, Satchidanand Satpute
Summary: The presence of colors, organic surface finishing agents and surfactants in textile industry effluent poses a significant threat to the surrounding environment. Therefore, the removal of these components from textile industry effluent is necessary. In this study, the use of low cost and environmentally friendly biosorbents, Azospirillium biofertilizer and Rhizobium biofertilizer, for the removal of Congo red dye was investigated.
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2023)
Article
Environmental Sciences
Kai Ling Yu, Xin Jiat Lee, Hwai Chyuan Ong, Wei-Hsin Chen, Jo-Shu Chang, Chih-Sheng Lin, Pau Loke Show, Tau Chuan Ling
Summary: This study investigated the adsorption behavior of cationic and anionic dyes onto wet-torrefied Chlorella sp. microalgal biochar. The Langmuir isotherm was found to be the best model fit, suggesting monolayer adsorption as the dominant process, with maximum adsorption capacities of 113.00 mg/g for MB and 164.35 mg/g for CR. The results indicate that utilizing wet-torrefied microalgal biochar as an effective adsorbent for toxic dye removal is feasible.
ENVIRONMENTAL POLLUTION
(2021)
Article
Engineering, Environmental
Chao Liang, Shuzhen Qin, Hao Ai, Shasha Li, Kaifeng Du
Summary: A novel biosorbent with superadsorption ability for Congo red removal, porous lysozyme skeletons, was successfully prepared using an enhanced amyloidal denaturation protocol. The as-prepared superadsorbent showed rapid kinetics and high capacity for CR adsorption, as well as selectivity and recyclability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Muhammad Hamza, Ataf Ali Altaf, Samia Kausar, Shahzad Murtaza, Amen Shahpal, Muhammad Hamayun, Muhammad Tayyab, Komal Rizwan, Hamza Shoukat, Anum Maqsood
Summary: This work investigates the photocatalytic degradation of alizarin red using Cu-doped manganese oxide nanomaterials as catalysts under UV light irradiation. The synthesized nanoparticles, with Cu-doped manganese oxide as the catalyst, exhibited high efficiency in the degradation of alizarin red, with MH20 showing the highest degradation rate. The results indicate the potential of Cu-doped manganese oxides as effective catalysts for the removal of alizarin red.
Article
Engineering, Chemical
Fatiha Boukraa Djellal Saiah, Noureddine Bettahar
Summary: This study evaluated the dye sorption performance of hierarchical porous zirconium oxide and calcined clay, and proposed possible adsorption mechanisms and interactions between the materials and pollutants. The results showed that calcined LDH clays and zirconium oxide had better adsorption capacity for acidic dyes. The enhanced adsorption capacity of zirconium oxide was attributed to its high specific surface area and hierarchical pore structure, which increased active adsorption sites and promoted interactions with the dye.
DESALINATION AND WATER TREATMENT
(2022)
Article
Materials Science, Ceramics
Jinghao Miao, Xiaolei Song, Zhenxin Duan, Lin Lin, Rui Chen, Wenyu Guo, Bingbing Li, Ying Song, Ying Han, Xu Ran
Summary: Mesoporous Al2O3 nanofibers with ribbon-like structure were prepared using electrospinning technology, and their adsorption performance for dyes was investigated. The nanofibers prepared at 800°C exhibited the highest surface area and the strongest adsorption capacity for dyes.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Shumaila Akram, Tariq Javed
Summary: In this study, potato peel powder was successfully used to remove Congo red dye. The optimal adsorption conditions were a dose of 0.6 g, contact time of 90 minutes, solution pH of 3, initial concentration of 30 ppm, and temperature of 50 degrees C. The kinetics and isotherm studies showed that both physisorption and chemical adsorption occurred.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2022)
Article
Polymer Science
Rana A. Alharbi, Fahad M. Alminderej, Nouf F. Al-Harby, Noura Y. Elmehbad, Nadia A. Mohamed
Summary: A new hydrogel based on chitosan crosslinked with 2-chlorophenyl-bis(6-amino-1,3-dimethyluracil-5-yl) methane has been developed and proven through various techniques. Its efficiency in removing anionic Congo red dye in industrial wastewater was studied, and the optimal conditions for removal were investigated. The hydrogel showed a high adsorption capacity for the dye and had potential as a reusable adsorbent for industrial wastewater remediation.
Article
Materials Science, Multidisciplinary
Konthoujam Priyananda Singh, Boris Wareppam, Karkala Gururaj Raghavendra, Ningthoujam Joseph Singh, Aderbal Carlos de Oliveira, Vijayendra Kumar Garg, Subrata Ghosh, Loushambam Herojit Singh
Summary: In this study, iron oxide/carbon composites with well-defined heterophase grain boundaries were synthesized and explored for dye removal. The results showed that the presence of heterophase grain boundaries significantly enhanced the removal capacity of the composites for both cationic and anionic dyes. Adsorption isotherms and kinetic studies indicated that the Langmuir isotherm model was suitable for describing the adsorption process.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Environmental Sciences
A. Suhaimi, E. Mahmoudi, K. S. Siow, A. W. Mohammad, M. F. Mohd Razip Wee
Summary: Surface modification of PES membrane using plasma polymerization with heptylamine as the precursor significantly improves permeate flux, rejection, and fouling properties, showing great potential compared to untreated commercial filtration membranes.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Vividha Kondba Landge, Chao-Ming Huang, Vikas Sadashiv Hakke, Shirish Hari Sonawane, Sivakumar Manickam, Ming-Chun Hsieh
Summary: This study demonstrates the successful synthesis and comprehensive characterization of a visible-light-responsive Cu-ZnO/TiO2 nanocomposite photocatalyst. The synthesized photocatalyst shows excellent photocatalytic activity under direct sunlight and exhibits high recoverability and reusability.
Article
Green & Sustainable Science & Technology
Shubam Sudan, Jyotsna Kaushal, Ajay Khajuria
Summary: In this study, novel copper-carbon dots doped magnetic biochar (CDMBC) were synthesized and demonstrated to have good adsorptive ability for the removal of congo red (CR) dye from water. The as-synthesized CDMBC showed efficient removal of the dye in a short time, and adsorption experiments were conducted to evaluate the effect of different parameters. The kinetic and isothermal studies were also evaluated, and the regeneration ability of CDMBC was observed.
CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY
(2023)
