Article
Engineering, Environmental
Giselle Kalline Gomes Carvalho Barros, Lindemberg Jesus Nogueira Duarte, Ricardo Paulo Fonseca Melo, Francisco Wendell Bezerra Lopes, Eduardo Lins Barros Neto
Summary: Ionic micellar flocculation is an effective method for removing dyes from industrial wastewater, using a combination of anionic surfactants and calcium ions to form flocculants. By adjusting the dye concentration, surfactant concentration, pH, and presence of electrolytes, maximum removal efficiency can be achieved.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2022)
Article
Chemistry, Physical
Sadia Noor, Muhammad Babar Taj
Summary: The study investigated the interaction of two anionic dyes with cationic and mixed-surfactant media using UV-Visible spectroscopy. It was found that the solubilization of dyes was enhanced by mixing nonionic/cationic surfactants, and the dye-surfactant aggregates were stable in the media. The synergistic effect of cationic surfactant with nonionic counterpart led to deep entrapment of dye molecules in the micelles.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Chemical
Priyabrata Pal, Aiza Gay Corpuz, Shadi W. Hasan, Mika Sillanpaa, Fawzi Banat
Summary: This study successfully demonstrated the removal of single and mixed dyes from aqueous solutions using CGA flotation with a natural surfactant, showing high removal efficiency and the potential for recycling the materials.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Environmental Sciences
Olga Dlugosz, Anita Staron, Paulina Brzoza, Marcin Banach
Summary: The study showed that ZnO-SnO2 nanoparticles had good photodegradation efficiency on dye mixtures, with high dye removal efficiencies in binary and ternary systems. The research highlighted the importance of sorption in the interaction between catalyst and dyes, as well as the influence of dye nature on sorption and photocatalysis.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Chemical
Monika Wawrzkiewicz, Beata Podkoscielna
Summary: This article presents the synthesis and sorption characteristics of novel microspheres based on 4-vinylbenzene chloride (VBCl) with divinylbenzene (DVB) or ethylene glycol dimethylacrylate (EGDMA). The chemical structure and thermal resistance of the polymers were confirmed through various analysis techniques. The obtained polymeric microspheres showed effective removal of auramine O (AO) from aqueous solutions, with fast sorption kinetics.
Article
Environmental Sciences
Beatriz Lima Santos Klienchen Dalari, Cristiane Lisboa Giroletti, Francisco J. Malaret, Everton Skoronski, Jason P. Hallett, William Gerson Matias, Rodrigo Costa Puerari, Maria Eliza Nagel-Hassemer
Summary: Textile dyeing processes generate aqueous effluents containing toxic dyes, which require new wastewater treatment processes. This study evaluated the use of an Ionic Liquid for Liquid-Liquid Extraction to extract and treat reactive dyes, showing high extraction yields for black, navy, and royal dyes. However, the extracted solution exhibited increased toxicity towards Daphnia magna due to traces of the Ionic Liquid. Further studies are needed to reduce the risk of toxicity transfer to water.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Biochemistry & Molecular Biology
Rana J. Kadhim, Faris H. Al-Ani, Qusay F. Alsalhy, Alberto Figoli
Summary: This study focuses on optimizing the incorporation of MCM-41 mesoporous material into PES membranes for nanofiltration applications, aiming to reduce membrane fouling and improve energy efficiency. By using optimization techniques, mathematical and statistical analyses, the study identified optimal operating parameters to enhance membrane performance at a larger scale.
Article
Polymer Science
Yuanyuan Ouyang, Tunmise Ayode Otitoju, Dafu Jiang, Sanxi Li, Noor Fazliani Shoparwe, Song Wang, Ailing Zhang
Summary: Polyvinylidene fluoride-boron carbide mixed matrix membranes were synthesized via phase inversion method in this study. The addition of boron carbide particles improved the membrane performance for ultrafiltration of bovine serum albumin solution and photodegradation of rhodamine B and methylene blue dyes. The membranes with 4 wt.% boron carbide showed the highest photodegradation efficiency.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Engineering, Environmental
Xin Zheng, Chunjun Ni, Wenwen Xiao, Yuanyuan Liang, Yongjin Li
Summary: Ionic liquid grafted Polyethersulfone nanofibrous membranes (PES-g-IL NFMs) prepared by combining radiation induced grafting method and electrospinning strategy showed excellent adsorption ability for dyes and heavy metal ions, as well as great antibacterial capability, making them promising candidates for wastewater treatment.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Textiles
Mingxia Yu, Huosheng Li, Keke Li, Yuting Li, Fengli Liu, Gaosheng Zhang, Tangfu Xiao, Ping Zhang, Hongguo Zhang, Jianyou Long
Summary: Decolorization and organic degradation of wastewater containing multiple dyes can be effectively achieved by combining magnetic biochar with advanced oxidation using binary oxidants. The results of this study demonstrate the potential of using Fe3O4@C composites in combination with hypochlorite and persulfate for the treatment of multi-dye wastewater.
FIBERS AND POLYMERS
(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
Biochemistry & Molecular Biology
Malgorzata Wisniewska, Stanislaw Chibowski, Monika Wawrzkiewicz, Magda Onyszko, Viktor Bogatyrov
Summary: The global production of colored products and intermediates is increasing year on year, leading to an increase in toxic dyes entering the aquatic environment. This study explored the potential of using a carbon and silica (C/SiO2) composite for removing the azo dye C.I. Basic Red 46 (BR46), finding that the adsorption capacity was temperature dependent. The adsorption of cationic dye and surfactants influenced the structure of the electrical double layer at the solid-liquid interface.
Article
Biochemistry & Molecular Biology
Estefania Oyarce, Plinio Cantero-Lopez, Karina Roa, Andres Boulett, Osvaldo Yanez, Paola Santander, Guadalupe del C. Pizarro, Julio Sanchez
Summary: The contamination of water by dyes in high concentrations is a worldwide concern, prompting the development of efficient, economical, and environmentally friendly materials for water purification. This study investigated the hydration and adsorption capacity of cellulose nanofiber (CNF)-based biocomposites (BCs) for methylene blue (MB). The BCs demonstrated high water absorption and exceptional adsorption capacity for highly concentrated MB solutions, making them a promising material for water purification treatments.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Environmental Sciences
S. P. Keerthana, R. Yuvakkumar, P. Senthil Kumar, G. Ravi, Dhayalan Velauthapillai
Summary: In this study, the performance of pure copper hydroxide and copper hydroxide prepared with different proportions of sodium dodecyl sulphate (SDS) was investigated, with the 2% SDS-assisted sample showing superior photocatalytic activity. Formation of nanoclusters and nanosheets was confirmed through SEM analysis.
ENVIRONMENTAL RESEARCH
(2021)
Article
Chemistry, Physical
Tomasz Jozwiak, Urszula Filipkowska, Tadeusz Bakula, Beata Bralewska-Piotrowicz, Konrad Karczmarczyk, Magdalena Gierszewska, Ewa Olewnik-Kruszkowska, Natalia Szyrynska, Bogdan Lewczuk
Summary: This study investigates the possibility of using chitin from the molts of Tenebrio molitor to remove anionic and cationic dyes from aqueous solutions. The results show that the sorption efficiency of chitin for anionic dyes is highest at pH 2-3, while for cationic dyes it is highest at pH 6. The maximum sorption capacity of chitin for anionic dyes is higher than some carbon-based materials.
Article
Chemistry, Physical
Marlena Geca, Malgorzata Wisniewska, Teresa Urban, Piotr Nowicki
Summary: The study aimed to investigate the effects of temperature on the adsorption mechanisms of PAA and PEI on activated carbon surfaces obtained from nettle and sage herbs. Measurements were conducted at pH 3 and three temperature values. Adsorption/desorption of the polymers from single and mixed adsorbate solutions were also studied. The viscosity studies provided important data on the conformation of the polymer chains in solution. XPS studies were carried out on the systems with the highest adsorption capacity. Thermodynamic parameters were calculated to further analyze the adsorption process.
Article
Chemistry, Physical
Malgorzata Wisniewska, Natalia Pawlak, Dariusz Sternik, Robert Pietrzak, Piotr Nowicki
Summary: This research investigates the adsorption of organic and inorganic pollutants on carbonaceous adsorbents prepared from expired or broken food products. The activation process was conducted using potassium carbonate and orthophosphoric acid as activating agents. The activated carbons were characterized and their suitability as adsorbents for methylene blue and iodine removal from aqueous solutions was evaluated. The materials activated with H3PO4 showed higher effectiveness in both pollutant adsorptions. The Langmuir isotherm model provided a better fit for the experimental adsorption data for all carbonaceous materials compared to the Freundlich model.
Article
Environmental Sciences
Mariia Galaburda, Alicja Bosacka, Dariusz Sternik, Olena Oranska, Mykola Borysenko, Volodymyr Gun'ko, Anna Derylo-Marczewska
Summary: Magnetosensitive biochars were prepared by mechanochemical ball-milling of lignin and blast furnace dust, followed by pyrolysis. The materials were characterized using various techniques, and the adsorption studies showed their potential in water remediation.
Article
Chemistry, Physical
Yu. V. Yavorskyi, A. B. Hrubiak, Ya. V. Zaulychnyy, M. V. Karpets, V. V. Moklyak, V. M. Gun'ko, O. I. Dudka
Summary: This study investigates the relationship between the electrochemical properties and grinding duration of mixed nanosilica and nanoalumina powders. It explores the impact of structural and morphological changes on the electrochemical characteristics of the nanocomposite powder. The study utilizes techniques such as scanning electron spectroscopy, X-ray diffraction analysis, and ultra-soft X-ray emission spectroscopy to analyze the structural and morphological characteristics.
APPLIED SURFACE SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Monika Wawrzkiewicz, Anna Kucharczyk
Summary: Direct dyes are widely used for coloring various materials, but some of them, especially azo type dyes and their biotransformation products, exhibit toxicity, carcinogenicity, and mutagenicity in aquatic environment, thus their careful removal from industrial effluents is necessary. In this study, anion exchange resin Amberlyst A21 was proposed for the adsorptive retention of three direct dyes from effluents. The adsorption capacity of DO26 and DO23 was found to be 285.6 mg/g and 271.1 mg/g, respectively, according to the Langmuir isotherm model. The Freundlich isotherm model was better for describing the uptake of DB22, with an isotherm constant of 0.609 mg(1-1/n) L-1/n/g. The pseudo-second-order kinetic model was more suitable for describing the experimental data. The presence of anionic and non-ionic surfactants decreased dye adsorption, while Na2SO4 and Na2CO3 enhanced dye uptake. Regeneration of the A21 resin was challenging, but a slight increase in efficiency was observed using 1M HCl, 1 M NaOH, and 1 M NaCl solutions in 50% v/v methanol.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
Victoria Paientko, Olena I. Oranska, Volodymyr M. Gun'ko, Ewa Skwarek
Summary: To improve the properties of rose clay composites, mechanical treatment was used to prepare nanostructured composites with natural and synthetic nanomaterials. Various characterization methods were employed to analyze the materials. The composites showed enhanced release of bioactive substances and demonstrated potential for cosmetic applications.
Article
Biochemistry & Molecular Biology
Agata Wawrzyniak, Malgorzata Wisniewska, Piotr Nowicki
Summary: Water resources are being degraded by waste discharge from urban, industrial, and agricultural areas. This study investigates the use of carbonaceous adsorbents derived from pistachio nut shells to effectively treat drinking water and sewage by adsorbing organic and inorganic pollutants. The activation method and properties of the carbonaceous materials are examined, and their efficiency in adsorbing iodine, methylene blue, and poly(acrylic acid) from aqueous solutions is evaluated. The results show that the sample prepared through chemical activation is more effective in adsorbing all tested pollutants, with maximum sorption capacities of 1059 mg/g for iodine, 183.1 mg/g for methylene blue, and 207.9 mg/g for poly(acrylic acid).
Article
Polymer Science
Slawomir Frynas, Monika Wawrzkiewicz
Summary: A novel phosphorus-containing sorbent (CyP(Ph)4-DVB) was prepared by copolymerizing divinylbenzene (DVB) with bis alpha, beta-unsaturated phosphorylated cyclohexene (CyP(Ph)4). Thermogravimetric analysis (TGA) showed improved thermal stability of CyP(Ph)4-DVB compared to poly(DVB). Batch adsorption tests revealed that Freundlich isotherm model provided a better fit for the equilibrium sorption data of C.I. Basic Yellow 2 (BY2) and C.I. Basic Blue 3 (BB3) on CyP(Ph)4-DVB.
Article
Chemistry, Physical
Monika Wawrzkiewicz, Beata Podkoscielna, Przemyslaw Podkoscielny, Jadranka Blazhevska Gilev
Summary: This study synthesized polymeric adsorbents using suspension polymerization with methyl methacrylate and different crosslinking monomers. The adsorbents showed high capacity for adsorbing basic dyes and phenol, and the sorption kinetics could be predicted using the pseudo-second order kinetic model and intraparticle diffusion model.
Article
Chemistry, Multidisciplinary
Mirtemir Kurbanov, Lyudmyla Andriyko, Jamshid Panjiev, Sardor Tulaganov, Volodymyr Gun'ko, Andrii Marynin, Stanislaw Pikus
Summary: A new pilot plant equipment has been developed that utilizes the physical effects of sublimation and desublimation for processing silicon-containing raw materials. By using this equipment, amorphous silicon dioxide and iron oxide can be separated from metallurgical waste, resulting in a collective concentrate of valuable components.
JOURNAL OF NANOPARTICLE RESEARCH
(2023)
Article
Biochemistry & Molecular Biology
Monika Wawrzkiewicz, Slawomir Frynas, Beata Podkoscielna
Summary: A new phosphorus-containing sorbent was synthesized and characterized for the removal of cationic dyes. The adsorption process followed Freundlich and pseudo-second-order models. The presence of Na2SO4 and cationic surfactant in the solution hindered dye adsorption, and regeneration of the adsorbent with acidic solutions and methanol showed limited efficiency.
Article
Environmental Sciences
Khizar Hussain Shah, Noor S. Shah, Gul Afshan Khan, Sadaf Sarfraz, Jibran Iqbal, Aneeqa Batool, Ahmad Jwuiyad, Shabnam Shahida, Changseok Han, Monika Wawrzkiewicz
Summary: This study investigates and compares the influence of surface functional groups and chemical matrices of macroporous resin on the exchange mechanism of Cr(III) ions. The results show that sulfonic resin has faster kinetics and higher equilibrium exchange capacity for Cr(III) ions compared to carboxylic resin. Adsorption isotherms indicate that carboxylic resin has higher affinity for Cr(III) removal at low metal ion concentrations. The findings provide valuable insights for the selection of macroporous resins as adsorbents in water filtration systems.
Review
Chemistry, Physical
Marlena Geca, Ahmed M. Khalil, Mengqi Tang, Arvind K. Bhakta, Youssef Snoussi, Piotr Nowicki, Malgorzata Wisniewska, Mohamed M. Chehimi
Summary: In recent years, biochar has gained recognition as a valuable biosourced material for tackling global challenges in various fields. This review focuses on the surface treatment of biochar using silane and other coupling agents, and summarizes the recent progress in this area. The correlation between the nature and extent of functionalization and the end applications of surface-engineered biochar is also discussed.
Article
Environmental Sciences
Kacper Latusek, Teresa Urban, Justyna Ulatowska, Izabela Polowczyk, Piotr Nowicki, Malgorzata Wisniewska
Summary: The aim of this research was to investigate the adsorption-desorption, surface, electrokinetic, and stability properties of iron-containing minerals in the presence of anionic polyacrylamide (AN PAM) and lead(II) ions. Three minerals, akaganeite, goethite, and magnetite, were synthesized using precipitation method. The interaction mechanism of heavy metal ions with polymer flocculant on soil mineral particles was proposed. The results showed that akaganeite had the highest affinity for AN PAM and/or Pb(II), adsorbing both from single and mixed solutions. Polymer-metal complexes formed in the mixed adsorbate systems were stable, reducing the desorption and bioavailability of toxic lead ions in the soil environment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Magdalena Medykowska, Malgorzata Wisniewska, Stanislaw Chibowski
Summary: The main purpose of this study was to investigate the mechanisms of protein adsorption on porous materials and the effects of common environmental contaminants. The results showed that Na-X zeolite was an effective adsorbent for protein removal, with the highest adsorption at pH values close to the protein's isoelectric point.