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Review
Multidisciplinary Sciences
Chenxi Zhao et al.
Summary: This review article summarizes the preparation methods of hydrogels using biopolymers as the main raw materials, discusses the main categories and applications of biopolymer hydrogels, and emphasizes their great potential in environmental remediation.
JOURNAL OF ADVANCED RESEARCH
(2023)
Article
Agricultural Engineering
Soraya Soleimani et al.
Summary: In this study, Calcium alginate hydrogels reinforced with cellulose nanocrystals (CA/CNC) were used as an effective and green adsorbent for the removal of methylene blue (MB) from contaminated waters. The results showed that CA/CNC hydrogels had a high adsorption capacity for MB.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Chemistry, Multidisciplinary
Meriem Kasbaji et al.
Summary: This study for the first time used biomass residues and algal wastes to produce efficient adsorbents for the removal of methylene blue dye from water. The bio-sorbents showed good physicochemical features and efficiency, and the adsorption process was found to be exothermic and spontaneous.
SEPARATION SCIENCE AND TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Shi Deng et al.
Summary: Water pollution caused by hexavalent chromium ions has become a matter of concern due to their high toxicity and carcinogenic properties. This study presents a facile strategy to prepare a chitosan-sulfur quantum dots composite hydrogel that can effectively sense and adsorb Cr(VI) ions. The hydrogel demonstrates excellent fluorescence stability and sensitivity towards Cr(VI) ions, with a detection limit of 176.2 nM. Additionally, the hydrogel shows high uptake capability and favorable reusability for Cr(VI) ion removal. Overall, this work provides an effective approach to prepare multifunctional hydrogels for water contaminant monitoring and removal.
ACS APPLIED NANO MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Jonathan A. Diaz-Baca et al.
Summary: This paper presents the synthesis of flocculants for colloidal systems by polymerizing tall oil lignin (TOL), starch, and 2-methyl-2-propene-1-sulfonic acid sodium salt (MPSA), using a three-component system. Advanced NMR techniques confirmed the covalent polymerization of TOL and starch with MPSA, resulting in a three-block copolymer. The properties of the copolymer, such as molecular weight and deposition behavior, were found to be influenced by the structure of lignin and starch. The copolymer with higher molecular weight exhibited better flocculation performance in colloidal systems.
Article
Engineering, Environmental
Nisar Ahamed Babujohn et al.
Summary: This article reports a method for constructing crystalline covalent organic frameworks/polymers through a single-step reaction, with controlled pore sizes and properties. Using this method, researchers successfully synthesized triphenylene-based crown ether copolymers and demonstrated their high selectivity for the adsorption of gold and organic dyes.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Chao Wang et al.
Summary: In this study, bio-based hydrogels (LN-NH-SA hydrogel) were prepared from aminated lignin and sodium alginate. The physical and chemical properties of the hydrogel were characterized using various techniques. The LN-NH-SA@3 hydrogel showed high adsorption efficiency for methylene blue and maintained good adsorption efficiency after multiple cycles. Overall, the environmentally friendly and cost-effective LN-NH-SA@3 hydrogel shows promise for dye adsorption.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Green & Sustainable Science & Technology
N. Vasiraja et al.
Summary: This study focuses on the adsorption removal of Methylene Blue (MB) dye and Heavy Metals (HM) from textile industry effluent using ZnCl2-activated carbon. The activated carbon was prepared using the Prosopis Juliflora plant and showed excellent adsorption performance. The study also analyzed and evaluated the adsorbent through various experimental and characterization methods. The results demonstrate that the activated carbon has high adsorption capacity for MB dye and heavy metals.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Applied
Tianyu Yin et al.
Summary: In this study, covalently crosslinked porous cryogels with high adsorption capacity and reusability were fabricated for the removal of cationic dyes in wastewater. The cryogels exhibited excellent adsorption performance under alkaline conditions, and maintained their adsorption capacity and selective adsorption capability after regeneration.
CARBOHYDRATE POLYMERS
(2023)
Article
Chemistry, Applied
Gao-Jie Jiao et al.
Summary: A novel multi-layered reticular polyamidoxime (PAO)-functionalized holocellulose bundles with abundant oriented micro-channels and high mechanical strength were successfully synthesized for uranium capture from seawater. This material exhibited high adsorption capacity, excellent selectivity, and achieved ultra-high uranium extraction capacity after exposure to natural seawater. The findings present a significant breakthrough for large-scale uranium extraction from seawater.
CARBOHYDRATE POLYMERS
(2023)
Article
Engineering, Environmental
Yanyang Liu et al.
Summary: In this study, a multifunctional biomass-based aerogel was synthesized using waste reed cellulose and chitosan. The aerogel exhibited a 3D hierarchical porous structure with low density. The results showed that the aerogel had a synergistic effect on the adsorption of Congo red and Cu2+, and also had good adsorption performance for dyeing wastewater.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Jifan Zhang et al.
Summary: The efficient reuse of agricultural wastes, such as apple pomace, has attracted much attention due to its economic benefits and environmental reduction effects. Cellulose, the main component of apple pomace, is widely used as an adsorption material for dye removal. However, the unsatisfactory adsorption performance of cellulose necessitates improvements. In this study, dialdehyde cellulose (DAC) was synthesized from apple pomace cellulose and crosslinked with hyperbranched polyethyleneimine (HPEI) to prepare a HPEI-DAC hydrogel with enhanced adsorption sites and performance. The HPEI-DAC hydrogel showed high adsorption capacity and good regeneration ability, making it a promising adsorbent for azo dye wastewater treatment.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Agricultural Engineering
Zhijie Shen et al.
Summary: In this study, the adsorption behaviors of chlorogenic acid (CGA) on GMA-10 resin were investigated. Static adsorption experiments were conducted to compare the adsorption performance of GMA-10 with other resins under different conditions. Dynamic adsorption and desorption experiments showed a significant increase in CGA content after treatment with GMA-10 resin. The potential of GMA-10 to separate and purify CGA from Eucommia ulmoides Oliver leaf was demonstrated.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Chemistry, Analytical
Pinar Ilgin
Summary: In this study, a pectin/poly(MA-co-AMPS) hydrogel was successfully synthesized and its swelling behavior was investigated. The chemical structure of the hydrogel was confirmed using FT-IR spectroscopy, and surface morphology assessment was performed using SEM. The hydrogel exhibited excellent adsorption capacity for cationic dyes, with adsorption kinetics following a pseudo-second-order model and adsorption isotherms described by the Langmuir model.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2022)
Article
Engineering, Environmental
Hanjing Xue et al.
Summary: Activated carbons and MOF-based composites were prepared from ashitaba biomass for the adsorption of methylene blue, and results showed that the surfactant-functionalized activated carbon outperformed other adsorbents with an adsorption capacity exceeding 400 mg/g. This adsorbent shows promising application potential for treating wastewater polluted by dye molecules.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Xiangbo Fan et al.
Summary: In this study, a porous multifunctional biomass carbon was prepared using an acid-base modification method, and a biochar acrylic-based hydrogel composite was successfully obtained with enhanced adsorption performance and stability. The adsorbent exhibited high efficiency adsorption capacity and selective adsorption for pollutants, followed a Langmuir isotherm and a pseudo-second-order kinetic model during the adsorption process. XPS results confirmed that surface complexation and electrostatic attraction were the main mechanisms of the adsorption reaction, and the adsorbent showed consistent high adsorption capacity and metal ion recovery after multiple cycles.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Ji Won Heo et al.
Summary: Research on low-cost bio-adsorbents for the removal of harmful substances from effluents has gained significant attention. This study prepared three types of amino-silane-modified lignins and investigated their adsorption behavior towards cationic and anionic dyes. The results showed that the amino-silane reagents resulted in different molecular self-assembly structures on the lignin surface. The ASLs exhibited excellent adsorption capacities and selectivity based on the pH conditions.
Review
Chemistry, Multidisciplinary
Yinchuan Yang et al.
Summary: This article reviews the use of hydrogels for the removal of methylene blue from wastewater, including discussions on hydrogel preparation and properties, adsorption performance and mechanisms, reusability, and comparison with other oxidation methods.
ENVIRONMENTAL CHEMISTRY LETTERS
(2022)
Article
Agricultural Engineering
Javed Ali et al.
Summary: In this study, activated carbon was prepared from Datura metel seeds and used as a bioadsorbent for the removal of cationic and anionic dyes. The results showed that the adsorption of methylene blue and Eriochrome black T was significantly enhanced with rising concentration and agitation speed, while decreased with temperature rise, with the best adsorption at 10 degrees C.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Biochemistry & Molecular Biology
Bihua Shen et al.
Summary: In this study, hydrogel adsorbents were prepared using pectin with different esterification degrees, and the effect of esterification degree on the structure and adsorption performance of the hydrogels was studied. The results showed that hydrogels prepared from pectin with low esterification degree had stronger adsorption capacity, and the adsorption behavior was analyzed through kinetics and thermodynamics.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Biochemistry & Molecular Biology
Lemya Boughrara et al.
Summary: This paper studies the use of ester materials prepared by grafting diols with different carbon chain lengths in alginic acid for the adsorption of methylene blue. The results show that the esterified alginic acid has a high adsorption capacity for methylene blue, and an adsorption mechanism is established.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Biochemistry & Molecular Biology
Xiaoxiao Wan et al.
Summary: In this study, a dual-network, composite hydrogel adsorbent was prepared by introducing chitosan cross-linked polyvinylamine into the N,N '-methylenebisacrylamide cross-linked polyacrylic acid network. The hydrogel exhibited excellent mechanical properties, good reusability, and large adsorption capacity, making it highly efficient for the removal of methylene blue dye from textile industry wastewater.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Chemistry, Applied
Junyang You et al.
Summary: A facile and reliable strategy to create ZnS nanoparticles supported by cellulose/chitosan sponge was developed for efficient removal of dyes from wastewater. The ZnCCSs exhibited outstanding adsorption and photocatalytic degradation performances, resulting in a high removal ratio and excellent stability after reusability cycles. This study provides a promising way of removing dye contaminants through a combination of various mechanisms.
CARBOHYDRATE POLYMERS
(2022)
Article
Environmental Sciences
Nguyen Tien Hoang et al.
Summary: This study investigated the degradation of dyes using the UV/PS process and found that the degradation followed a first-order kinetic model. The pH of the solution and the presence of water matrices had an impact on the degradation efficiency. The study also compared the UV/PS process with UV/HOCl and UV/H2O2 processes and found that UV/PS had lower toxicity and was more beneficial for total organic carbon removal.
Article
Engineering, Chemical
Jifu Du et al.
Summary: The competitive adsorption and selective adsorption mechanism of Indigo Carmine (IC) and Methyl Orange (MO) dyes using methacryloxyethyltrimethyl ammonium chloride functionalized kapok fiber (DKF) were investigated. The results showed that DKF had good adsorption capacity for individual adsorption of IC and MO, and exhibited selective adsorption towards IC.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Agricultural Engineering
Xiumin Li et al.
Summary: A novel adsorbent DBSAFe3O4@BC was synthesized and used to efficiently remove dyes from aqueous solution. The adsorption capacity of DBSAFe3O4@BC for Rhodamine B (RhB) was significantly enhanced through hydrophobic and 7C-7C interaction.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Wishal Zia Durrani et al.
Summary: In this study, activated carbon was prepared from date palm and incorporated with alginate to prepare a membrane for adsorption of methylene blue. The experimental results showed that the membrane had high adsorption efficiency and maximum adsorption capacity for methylene blue.
Article
Agricultural Engineering
Xiangbo Fan et al.
Summary: A new type of adsorbent SLS/CMC/BC was successfully synthesized and its adsorption performance was studied. The results showed that this material had high adsorption capacity and good regeneration performance, making it suitable for the removal of pollutants such as Pb2+ and MB.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Review
Chemistry, Multidisciplinary
Shao-Chao Sun et al.
Summary: This review introduces the structural characteristics, key factors, and strategies for improving the performance of lignin-based carbon fibers (LCFs). Recent advancements in LCFs since 2017, including precursor development, spinning techniques, stabilization, carbonization, graphitization, and activation, are systematically reviewed. Furthermore, the wide range of applications of LCFs in various fields is discussed. The current challenges and opportunities for the future development of LCFs are also highlighted.
Article
Agricultural Engineering
Hao-Zhe Li et al.
Summary: In Co-hydrothermal carbonization (Co-HTC), blending PVC into bamboo powder can significantly enhance the adsorption ability of hydrochar for methylene blue. The main adsorption mechanism involves electrostatic attraction and hydrogen bonding.
BIORESOURCE TECHNOLOGY
(2021)
Article
Chemistry, Applied
Ce Gao et al.
Summary: A new aerogel with superior mechanical properties, high adsorption capacity, and excellent regeneration property has been developed for heavy metal removal from water. The alginate/melamine/chitosan aerogel efficiently extracts Pb(II) from aqueous solution, showing excellent and selective adsorption capacity, and can be regenerated using dilute acidic solution.
CARBOHYDRATE POLYMERS
(2021)
Article
Biochemistry & Molecular Biology
Jian-wei Wang et al.
Summary: With the development of dye and printing technologies, production wastewater has become a significant source of water and soil pollution. Low-cost, high-capacity hydrogels have been developed to effectively remove water-soluble dyes, showing great potential in treating dye wastewater. This study provides a new approach and references for hydrogel treatment of dye wastewater.
CARBOHYDRATE RESEARCH
(2021)
Article
Biochemistry & Molecular Biology
Alexandra Cemin et al.
Summary: The lignin sample extracted from Eucalyptus grandis sawdust was utilized as an adsorbent for the removal of methylene blue from aqueous solutions. The adsorption data fit well with the Langmuir model and the pseudo-second order model, indicating spontaneous removal of MB by lignin involving physisorption mechanisms. This study highlights the potential use of lignin as an effective adsorbent for cationic dyes, including MB, with possible recycling and reusing cycles without significant loss of properties.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Polymer Science
Wenjie Du et al.
Summary: A novel chitosan-based double network hydrogel was synthesized and applied as an efficient adsorbent to remove methylene blue. The hydrogel exhibited high strength, good adsorption properties, and a large specific surface area with developed pore structure. The adsorption process was influenced by pH, temperature, and adsorbent dose, fitting well with pseudo-second-order kinetic model and Langmuir isotherm.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Xiao Xiao et al.
Summary: The study found that 1,4-butanesultone was the most effective sulfonation reagent for lignin, producing a sulfonated product with high molecular weight and sulfonic group content, enhancing dispersibility and improving dyeing rate. The sulfonation by 1,4-butanesultone can decrease the phenolic hydroxyl content of lignin, preventing the adsorption of the dispersant on fibers and reducing fiber staining during dyeing process.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Engineering, Environmental
Bo Gao et al.
Summary: The ultra-high adsorption capacity and mechanical property of a poly(acrylic acid)/laponite nanocomposite hydrogel have been achieved by combining physical cross-linking with sparse chemical cross-linking. The hydrogel demonstrates porous 3D network structures and high water penetration, resulting in fully exposed adsorption sites and facilitating adsorption. With an adsorption capacity of 3846 mg/g for methylene blue, this hydrogel shows promising potential as an efficient super adsorbent for water treatment.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Applied
Hongjie Dai et al.
CARBOHYDRATE POLYMERS
(2020)
Review
Environmental Sciences
Angelika Tkaczyk et al.
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Engineering, Environmental
Qinhua Wang et al.
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Biochemistry & Molecular Biology
Kanda Junlapong et al.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2020)
Article
Polymer Science
Derya Yesim Hopa et al.
Article
Chemistry, Applied
J. Azimvand et al.
ADSORPTION SCIENCE & TECHNOLOGY
(2018)
Article
Chemistry, Physical
Lakhya Jyoti Konwar et al.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2015)
