Article
Chemistry, Multidisciplinary
Yasar Kemal Recepoglu, Asli Yuksel
Summary: In this study, phosphorylated functional cellulose was cross-linked with epichlorohydrin to prepare a hydrophilic nanogel, which was successfully applied for lithium recovery from water. The results showed that lithium recovery was more efficient at a low flow rate, and the dynamic sorption process was independent of bed height.
Article
Engineering, Environmental
Hyo Jun Min, Min Su Park, Miso Kang, Jong Hak Kim
Summary: A polymer electrolyte based on a zwitterionic graft copolymer was developed in this study, utilizing the excellent properties of PVA main chains and PSBMA side chains to improve ion conductivity. When applied to EDLC, the new electrolyte showed significantly improved performance, attributed to higher ion conductivity and better electrode/electrolyte interface compatibility.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Biochemistry & Molecular Biology
Yan Li, Lingying Xie, Guo Qu, Han Zhang, Yimin Dai, Jinglin Tan, Jinrong Zhong, Yue-Fei Zhang
Summary: This study presents the preparation and properties of a hydrogel adsorbent for the treatment of wastewater contaminated with palladium. The hydrogel was prepared using chitosan and acrolein as raw materials. The adsorption behaviors of the hydrogel for Pd(II) ions were analyzed and characterized, revealing a maximum adsorption capacity of 505.05 mg/g under optimal conditions. Chelation and electrostatic attraction were found to dominate the adsorption process, as confirmed by FT-IR, XPS, and MS analyses.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2024)
Article
Engineering, Environmental
C. Mita, I Bunea, T. Roman, D. Humelnicu
Summary: The study investigated the efficiency of three types of cross-linked and functionalized acrylic polymers in removing zinc ions from synthetic wastewaters. It was found that Cm26 polymer had a higher sorption capacity compared to As32 and As30. After five consecutive sorption/desorption cycles, the adsorption capacity of the sorbents towards Zn2+ ions slightly decreased, indicating their potential for the removal of Zn(II) ions from residual waters.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2021)
Article
Agricultural Engineering
Siroos Iravani Mohammadabadi, Vahid Javanbakht
Summary: The use of biodegradable biopolymers such as cellulose as an adsorbent for heavy metal contaminated waters is a sustainable solution. In this study, treated biomass from agricultural wastes was incorporated in alginate matrix to fabricate beads for lead removal, showing a maximum adsorption capacity of 206.75 mg/g. Experimental data fit well with pseudo-second-order kinetic and Freundlich isotherm models, indicating the efficiency of the adsorbent.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Polymer Science
Rui Yang, Pei Dai, Shu Zhang, Ri-Wei Xu, Song Hong, Wen-Feng Lin, Yi-Xian Wu
Summary: The study focuses on preparing a cross-linked imidazolium functionalized anion-exchange membrane with high ionic conductivity and chemical stability, making it a potential material for fuel cell applications.
Article
Nanoscience & Nanotechnology
Funda Arslan, Khajidkhand Chuluunbandi, Anna T. S. Freiberg, Attila Kormanyos, Ferit Sit, Serhiy Cherevko, Jochen Kerres, Simon Thiele, Thomas Boehm
Summary: A new ion-pair-coordinated membrane (IPM) system with quaternary ammonium groups for high-temperature proton-exchange membrane fuel cells is introduced, showing reduced swelling and better mechanical properties upon doping. The best-performing IPM-based HT-PEMFC achieves higher power density compared to conventional PBI membranes, making them promising candidates for application in this field.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Polymer Science
Ruth Oye Auke, Guilhem Arrachart, Romain Tavernier, Ghislain David, Stephane Pellet-Rostaing
Summary: A solid-phase extraction system was investigated for the extraction and recovery of rare-earth elements. Phenolic ion-exchange resins were synthesized using a non-toxic aromatic dialdehyde as a substitute for toxic formaldehyde. The resins showed a high ion-exchange capacity and the ability to back-extract the rare-earth elements using an acid solution.
Article
Multidisciplinary Sciences
Mohammad Javad Amiri, Mehdi Bahrami, Navid Nekouee
Summary: Bone char produced from ostrich bone waste was evaluated for its ability to adsorb mercury(II) in a packed-bed column. The mass transport model was found to accurately simulate the breakthrough curves of mercury(II) and was superior to other mathematical models. Bone char showed promising results in removing mercury(II) from real wastewater samples.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Chemical
Jagabandhu Ray, Santu Kumar Samanta, Tridib Tripathy
Summary: A graft copolymer was synthesized by grafting a mixture of AMPS and AA monomers onto a dextrin polysaccharide backbone, and used as an efficient adsorbent for the removal of toxic pesticides. Various characterization techniques and adsorption studies were conducted, showing significant adsorption capacity for the pesticides and a spontaneous, endothermic adsorption process.
POLYMER ENGINEERING AND SCIENCE
(2021)
Article
Engineering, Chemical
Jagabandhu Ray, Tridib Tripathy
Summary: A graft copolymer was synthesized by grafting DMAEA and AMPS monomers onto the dextrin backbone via free radical polymerization using KPS as initiator. The copolymer was characterized using various techniques and utilized as an adsorbent for the removal of nitrophenols from water solutions. The adsorption dynamics, kinetics, isotherms, and thermodynamics were investigated. The nitrophenol adsorption data followed the Langmuir isotherm model, with maximum adsorption capacities of 215.26 mg/g for ONP, 223.60 mg/g for PNP, and 288.24 mg/g for DNP. The equilibrium kinetics followed a pseudo-second-order model. Thermodynamic analysis indicated that nitrophenol adsorption onto the copolymer was spontaneous and endothermic. The preferential adsorption order for nitrophenols was ONP < PNP < DNP.
POLYMER ENGINEERING AND SCIENCE
(2023)
Article
Polymer Science
Yan Wang, Yuyong Ai, Xiaolin Liu, Bowei Chen, Yong Zhang
Summary: In this study, a novel indole-modified cross-linked chitosan aerogel (IAA-CTSA) was successfully synthesized by grafting 3-indoleacetic acid onto chitosan and adding glutaraldehyde as a crosslinking agent. The IAA-CTSA demonstrated powerful adsorption capacity for U(vi) at pH 6.5, reaching equilibrium within 6 hours. The maximum capture capacity for U(vi) was calculated to be 847.5 mg g(-1) based on the Langmuir model at 289 K. IAA-CTSA showed pH-dependent removal efficiency for U(vi), while the ionic strength had no significant impact. Moreover, IAA-CTSA maintained above 80% removal efficiency after 4 successive cycles. The study suggests that IAA-CTSA has great potential for wastewater remediation.
Article
Engineering, Environmental
Linna Dong, Xingfa Zeng, Jifang Fu, Liya Chen, Jia Zhou, Sanwei Dai, Liyi Shi
Summary: A novel freestanding crosslinked ionic copolymer solid electrolyte was reported in this study, fabricated via cross-linking polytetramethylene ether glycol with 1-vinyl-3-butylimidazole bis(trifluoromethylsulfonyl)imide ionic liquid. The electrolytes exhibit high lithium-ion transference number, good electrochemical stability, and stable interface compatibility, leading to good cycling and rate performance in lithium ion batteries.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Chemical
Jiaqi Xu, Pan Chen
Summary: In this study, a high-performance lithium-ion sieve was prepared using inexpensive attapulgite. The sieve exhibited excellent adsorption efficiency, selectivity, and recycling properties. The formation of a lithium ion memory pore and the filling of pores by lithium ions were observed during the adsorption process. The study provides a new approach to the market application of attapulgite resources.
Article
Materials Science, Multidisciplinary
Longfei Zhang, Shuai Zhang, Cheng Wang, Wa Li, Lirong Yang, Shanggeng Li, Jiaming Hu, Lin Zhang
Summary: PEA, a porous material prepared by sol-gel method, shows efficient adsorption of copper ions and can be used as a practical adsorbent for copper ion adsorption in aqueous solution.
MATERIALS RESEARCH EXPRESS
(2021)
