Article
Materials Science, Multidisciplinary
Mohd Azam Mohd Adnan, Muhammad Nur Iman Amir, Mohd Rashid Y. Yusof Hamid, Mohd Rafie Johan, Nurhidayatullaili Muhd Julkapli
Summary: This study investigates the photodegradation of methyl orange pollutants using a composite material of synthesized titanium dioxide and chitosan supported on a glass substrate. The results show that the composite material with a 2:2 weight ratio of chitosan to titanium dioxide exhibits the highest dye removal activity under acidic conditions.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Environmental Sciences
Karmjeet Nain, Divya Dhillayan, Shafila Bansal, Qudrat Hundal, Priya Saharan, Santosh Bhukal
Summary: In this study, bare and ionic liquid-modified ZnO nanoparticles were fabricated using microwave irradiation method. XRD, FT-IR, FESEM, and UV-Visible spectroscopy were used to characterize the nanoparticles, which were then explored as adsorbents for the removal of azo dye from aqueous media. Factors such as dye concentration, pH, nanoparticles dose, and reaction time were investigated, and the results showed higher adsorption efficiency for the ionic liquid-modified nanoparticles compared to the bare ones. The study also demonstrated the impact of sonication on enhanced adsorption.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Yongfeng Kang, Bingqian Zhang, Junjian Miao, Yingyuan Yu, Jianning Fu, Baiyun Jia, Li Li
Summary: In this study, a hydrothermal method assisted by ultrasound was used to create a superparamagnetic Fe3O4 @Al-MOF nanocomposite for the removal of Congo red (CR) dye from water. The results showed that Fe3O4 @Al-MOF efficiently removed CR within 10 minutes and reached equilibrium within 50 minutes, with a high adsorption capacity of 2543.6 mg/g. The adsorption mechanism involved electrostatic interaction, pi-pi interaction, hydrogen bonding, and high porosity.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Hui-Chi Lin, Yu-Sung Liu, Kuan-Chi Wu, Yu-Lin Hsiao, Chen-Yu Tai, Hsu-Chih Cheng
Summary: This study investigates the influence of photoalignment on the memory state of nematic liquid crystals doped with silica nanoparticles and azo dyes. The memory state of the liquid crystal sample is achieved by using electrophoretically controlled silica nanoparticles, while the adsorbed azo dyes screen the effect of vertical orientation. These findings are significant for the development of a simple display method for hidden images.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Environmental Sciences
Mohd Azfar Shaida, R. K. Dutta, A. K. Sen, S. S. Ram, M. Sudarshan, Mu Naushad, Grzegorz Boczkaj, Md Sadique Nawab
Summary: A systematic study on using coal samples with varying carbon contents as adsorbents for removing a model cationic dye found that coal with low carbon content exhibited higher adsorption capacity. The adsorption process followed pseudo second order kinetic model and Langmuir adsorption isotherm.
Article
Environmental Sciences
Y. Sharma, R. Bhateria
Summary: This study successfully synthesized iron nanoparticles using a green chemistry method, which were effective in removing malachite green dye from water. The synthesized iron nanoparticles were spherical in shape and showed good adsorption and regeneration capabilities.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Ritesh Singh, Sravan Bokka, Annu Kumar Lakshya, Anirban Chowdhury
Summary: This study demonstrates the potential of CaO-doped ZrO2 nanoparticles as a dye adsorbent. Unlike previous research, this study shows that the doped-ZrO2 system alone can achieve maximum adsorption capacity for Congo red, with high surface area and rapid dye removal.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Environmental
Lin Yang, Jiaojiao Shang, Baojie Dou, Jianwu Lan, Chenxi Zhang, Rui Zou, Hongyan Xiao, Shaojian Lin
Summary: In this study, CO2-responsive cotton fibers decorated with Ag nanoparticles (PCCF@Ag) were prepared by in-situ growth of Ag nanoparticles on poly(2-(dimethylamino) ethyl methacrylate-co-4-acryloyloxy-benzophenone) coated cotton fibers. The as-prepared PCCF@Ag exhibited excellent adsorption performance towards both anionic and cationic dyes, and showed significantly enhanced adsorption capacity under CO2 stimulation. The PCCF@Ag also demonstrated outstanding reusability and antibacterial activity.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Fagr A. A. Shehata, Amer S. S. El-Kalliny, Mohamed S. S. Attia, Tarek A. A. Gad-Allah
Summary: Magnetic SiO2/Zn0.4Co0.6Fe2O4 aerogels were prepared by sol-gel method with APD and FD. The surface was modified to be hydrophobic. The materials exhibited superparamagnetic behavior and preference for the FD method, with high adsorption capacities and efficient oil separation. The magnetic recovery and reuse were successfully implemented, reducing practical application costs.
Article
Food Science & Technology
Mohammad Mehmandoust, Nevin Erk, Onur Karaman, Fatemeh Karimi, Majede Bijad, Ceren Karaman
Summary: In this study, an electrochemical sensor for the determination of the azo dye compound tartrazine (TRT) was developed. The sensor exhibited wide linear ranges, low detection limit, high selectivity, and superior recovery values, indicating great potential for monitoring TRT in food samples.
FOOD AND CHEMICAL TOXICOLOGY
(2021)
Article
Multidisciplinary Sciences
Simona Popa, Maria Elena Radulescu-Grad, Alina Perdivara, Giannin Mosoarca
Summary: The study focused on investigating the color fastness of a newly synthesized dye using wet-scrub and UV tests, as well as studying the removal of dye traces from wastewater. Results showed that the color parameters of the dye were influenced by UV exposure time, and active carbon powder was effective in adsorbing the dye.
SCIENTIFIC REPORTS
(2021)
Review
Engineering, Environmental
Yawei Shi, Qian Chang, Tongwen Zhang, Guobin Song, Ya Sun, Guanghui Ding
Summary: This review comprehensively summarizes recent works in the field of selective adsorption. It discusses the types of dyes investigated, analysis methods, and evaluation indexes for selective adsorption performances. The review also categorizes recent works based on different separation mechanisms and discusses the impacts of operational and environmental factors on selective adsorption performances and regeneration of adsorbents.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Shabari Dutta, Suman Kalyan Samanta, Santanu Bhattacharya
Summary: Phosphate based organic polymer networks (OPNs) were synthesized for dye sorption and heterogeneous catalysis. These OPNs selectively adsorb cationic dyes and allow the synthesis and stabilization of gold nanoparticles within the networks, demonstrating effective catalytic reduction reactions.
CHEMICAL COMMUNICATIONS
(2022)
Article
Environmental Sciences
Namrah Akhtar, Zaheer Aslam, Reyad A. Shawabkeh, Nadeem Baig, Umair Aslam, Ihsanullah Ihsanullah, Salahuddin Khan
Summary: In this study, waste fly ash was treated with acid activation and subsequent amine functionalization to improve its properties. The modified waste fly ash showed good adsorption performance for different dyes in wastewater. The adsorption behavior of the dyes was influenced by the type of dye and the presence of other dyes in the solution. The kinetics and thermodynamics of the adsorption process were analyzed, and a monolayer uptake capacity was determined for each dye. Overall, the modified waste fly ash proved to be an effective adsorbent for dye-bearing wastewater.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Mohd Arish Usman, Anees Y. Khan
Summary: In this study, a macroporous monolithic sponge based on polyethyleneimine (PEI) was developed using the ice-templating method and used as an adsorbent for dye removal. Both batch and continuous operations were studied, and the adsorption performance was modeled using Langmuir/Freundlich isotherms for static operations and the Adam-Bohart/Thomas model in packed-bed column experiments. The adsorbent showed excellent physiochemical characteristics, outstanding selectivity for anionic dye, ease of regeneration, and high adsorption performance in both batch and continuous studies.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Chemical
Yongxiang Wu, Nguyen Thi Hong Nhung, Deqian Zeng, Nengneng Luo, Akira Otsuki, Gjergj Dodbiba, Toyohisa Fujita
Summary: This study proposed a novel method for synthesizing flower-like vaterite calcium carbonate using nanobubble-containing ethanol and water mixed solution as the solvent and discussed the formation mechanism of vaterite with different shapes. The synthesized vaterite has significant practical interest in the integrated treatment of wastewater contaminated by heavy metals with effective Cd(II) removal, providing a promising field for studying heavy metal and pollutant adsorption in the liquid phase.
ADVANCED POWDER TECHNOLOGY
(2024)
Article
Engineering, Chemical
Jian Gong, Lipo Cheng, Ming Liu, Jie Jiang, Xiaoduo Ou
Summary: This study investigates the effects of particle shape on the collapse of granular columns using the discrete element method. The results show that particle shape has a significant impact on deposition morphology, energy evolution, and mechanical coordination number. Sphericity and angularity are identified as the most important macroscale factors, while roughness has a weaker microscale influence.
ADVANCED POWDER TECHNOLOGY
(2024)
