Article
Environmental Sciences
Masahiro Umehara, Yoshiaki Kumamoto, Kenta Mukai, Akira Isogai
Summary: The adsorption isotherms, kinetics, and thermodynamics of fluoride ions (F-) on FeOOH powders in water were studied. The results showed that FeOOH/TOCN powder is an excellent and efficient F- adsorbent in water. The adsorption of F- on FeOOH initially formed a monolayer through physical adsorption, and the adsorption kinetics followed the pseudo-second-order model. The thermodynamic analysis indicated that the adsorption process was spontaneous in water.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Materials Science, Paper & Wood
Sandra Rodriguez-Fabia, Jonathan Torstensen, Lars Johansson, Kristin Syverud
Summary: This review provides an overview of the hydrophobization of lignocellulosic materials by polymer adsorption and grafting. Radiation-induced grafting is the most environmentally friendly technique, while controlled radical polymerization allows for the synthesis of polymers with complex structures. The choice of modification technique depends on the end-use of the material.
Article
Polymer Science
Ilker Koc, Koray Sarkaya, Deniz Tuerkmen, Sueleyman Asir, Adil Denizli
Summary: This study developed a method for the selective removal of E2 from wastewater using E2-imprinted HEMA-based nanoparticles. The results show that E2-NP/BC-NFs have high selectivity towards E2 and can be reused multiple times.
Article
Biochemistry & Molecular Biology
Ayse Yildirim, Mustafa Baris Kocer, Ayse Damla Demir, Emine Arslan, Mustafa Yilmaz
Summary: The study developed a new, low-cost, and environmentally friendly colorimetric and fluorometric sensor using cellulose-based materials for detection of Fe(III). The materials showed effective antimicrobial and antifungal properties against various bacteria and fungi, with the antifungal properties being more potent than the antibacterial properties.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Environmental Sciences
Yunmei Wei, Lianying Chen, Gangzhen Jiao, Yi Wen, Qin Liao, Hongli Zhou, Shengjun Tang
Summary: This study investigated a biochar-based sorbent material for the efficient removal of metal-cyanide complexes from wastewater. The results showed that the iron-modified biochar composites had a high affinity for the metal-cyanide complexes, with a maximum sorption capacity of 580.96 mg/g for ferricyanide and 588.86 mg/g for tetracyanonickelate. The modification of the biochar altered the surface charge and promoted the formation of reductive-Fe minerals, facilitating the adsorption/precipitation of the target contaminants.
Article
Polymer Science
Katarzyna Kepa, Nasim Amiralian, Darren J. Martin, Lisbeth Grondahl
Summary: Cellulose nanofibres (CNF) derived from spinifex grass were modified with epoxidized soybean oil (ESO) to improve hydrophobicity. This method was applied to nanopaper and paper containing micro- and nanofibres, reducing water absorption and increasing contact angle. The successful application of ESO to CNF aerogels also reduced water vapor absorption.
Article
Chemistry, Applied
Jianting Liu, Yicong Chen, Shuyu Jiang, Jianhui Huang, Yuancai Lv, Yifan Liu, Minghua Liu
Summary: The cellulose-g-poly-(acrylamide-co-sulfonic acid) bio-adsorbent CASA showed excellent adsorption performance for Cr(III) from high-salinity wastewater, with a maximum adsorption capacity of 274.69 mg/g. The adsorption equilibrium could be reached within 10 minutes, and the main mechanisms include chelation, electrostatic interactions, and cation exchange.
CARBOHYDRATE POLYMERS
(2021)
Article
Green & Sustainable Science & Technology
Xiaoyu Lin, Myung-Hee Song, Duy Tho Tran, Youn-Sik Lee, Yeoung-Sang Yun
Summary: The aim of this study was to develop cellulose-based, fibrous adsorbents for the selective recovery of gold (Au) and to reveal the adsorption-reduction-attachment-aggregation mechanism. Polyethylenimine (PEI)-functionalized cellulose fibers (PCFs) showed outstanding selectivity for Au(III) in a solution containing the main metals found in electronic waste.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Biochemistry & Molecular Biology
Kongyou Wu, Kungang Chai, Liqin Zhou, Zhiliang Duan, Haibo Wu, Zhenghui Huang, Dongli Li, Zhongwei Tan, Fang Shen, Zongwu Wei, Hongbing Ji
Summary: TOC-PS-HCP was synthesized by TEMPO oxidation, grafting copolymerization, and post crosslinking, displaying excellent hydrophobicity and high specific surface area. The adsorption experiment showed efficient recovery of ethylbenzene and styrene, with a possible mechanism related to van der Waals force and pi-pi stacking.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Environmental Sciences
Zi Cheng, Honghong Lyu, Boxiong Shen, Jingya Tian, Yanfang Sun, Chunfei Wu
Summary: In this study, a novel FeOx@CNTs nanocomposite was synthesized and demonstrated to efficiently remove Sb(III) from aqueous solution through chemical adsorption and oxidation mechanisms. The composite could be easily separated from the solution using an external magnetic field, making it a promising environmentally-friendly adsorbent for remediating Sb(III) in water environments.
Article
Environmental Sciences
Heng Li, Kaisheng Gong, Xiaoying Jin, Gary Owens, Zuliang Chen
Summary: In this study, phytosynthesized iron nanoparticles were used to effectively remove Sb(III) and Sb(V) from mining wastewater. The nanoparticles oxidized Sb(III) to Sb(V) on their surface, and both Sb species were adsorbed onto the nanoparticles. The adsorption behavior of Sb(III) and Sb(V) followed the Langmuir adsorption model and pseudo-second-order kinetics. The nanoparticles showed great potential for removing Sb from contaminated mining wastewaters.
Article
Chemistry, Applied
Yi Liu, Hongying Fan, Xuan Wang, Jian Zhang, Wenting Li, Rong Wang
Summary: A corn stalk cellulose-based adsorbent with bifunctional groups of -NH-/-NH2 and C-S/C=S was successfully synthesized, showing efficient removal of Cu2+ and Pb2+ from wastewater. The introduction of CS/C=S groups maintained excellent adsorption performance for Cu2+ while ensuring efficient removal of Pb2+. This novel adsorbent offered a new approach for 'waste treatment by waste'.
CARBOHYDRATE POLYMERS
(2022)
Article
Chemistry, Physical
Wesam Abd El-Fattah, Ahlem Guesmi, Naoufel Ben Hamadi, Mohamed. G. El-Desouky, Ahmed Shahat
Summary: A novel cellulose nanocrystals biosorbent (CNCs) was synthesized and characterized for the efficient removal of indigo carmine blue (ICB) dye from wastewater. The study examined the adsorption behavior of ICB on CNCs under various reaction parameters. The results showed that CNCs exhibited a high adsorption capacity and chemisorption behavior towards ICB. Furthermore, CNCs demonstrated excellent reusability after multiple cycles of adsorption.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Materials Science, Paper & Wood
Arthur Bouchut, Bernard Cathala, Celine Moreau, Michael Lecourt, Michel Petit-Conil, Asja Pettignano, Julien Bernard, Aurelia Charlot, Etienne Fleury
Summary: This study reports a strategy to functionalize cellulosic surfaces through physical adsorption of xyloglucan (XG) and carboxymethyl cellulose (CMC) derivatives bearing allyl or alkyne groups. The derivatives with degrees of substitution ranging from 0.10 to 0.44 are prepared through the opening of the epoxide ring under mild basic aqueous medium. The deposition of these functionalized polysaccharides onto Whatman paper and wood pine fibers shows that the physisorption of the polymer chains is not altered by the extent of the modification or the nature of the substituents.
Article
Environmental Sciences
Zishuai Jiang, Shih-Hsin Ho, Xin Wang, Yudong Li, Chengyu Wang
Summary: This study summarizes the advantages of cellulose-biomass materials in water treatment, including their unique structure, environmental friendliness, degradability, renewability, and low energy cost benefits. Future research directions include oil-water separation, heavy metal ions in water, and dye adsorption.
ENVIRONMENTAL POLLUTION
(2021)