Article
Engineering, Chemical
Somayeh Asadi Haris, Shadab Dabagh, Hamidreza Mollasalehi, Yavuz Nuri Ertas
Summary: Superparamagnetic iron oxide nanoparticles (SPIONs) were synthesized and used for efficient removal of arsenite (As(III)). The optimum removal percentages for SPIONs and SPIONs-Alg were 99% and 90%, respectively, at pH 7, 30 degrees C, and 6.5 mg/L As (III) concentration. The Langmuir isotherm model fitted the equilibrium data better than Freundlich. The adsorption kinetic data showed a better fit to the pseudo-second-order kinetic model. SPIONs-Alg could be easily collected, recovered, and reused for multiple cycles with high sorption efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Environmental Sciences
Tonoy K. Das, Quentin Scott, Achintya N. Bezbaruah
Summary: The study synthesized naturally occurring montmorillonite clay-incorporated iron crosslinked alginate biopolymer beads for efficient phosphate removal from water. The beads showed high phosphate adsorption capacity and worked effectively over a wide pH range, making them potentially useful for phosphate recovery from eutrophic lakes and agricultural or municipal wastewater.
Article
Engineering, Electrical & Electronic
Farheen, Azra Parveen
Summary: In this research, Sr doped Fe2O3 NPs and Fe2O3 NPs were synthesized using the green synthesis approach with Egg Albumen as the precursor. The Sr doped Fe2O3 NPs showed effective photocatalytic activity and stability as a nanophotocatalyst. Integrating Sr2+ into the Fe2O3 crystal lattice widened the visible region and improved the photocatalytic efficiency.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Chemistry, Physical
Lamis A. Attia, R. Gamal
Summary: Alginate cobalt iron oxide (Alg-CoFe2O4) nanocomposite was synthesized as a magnetically separable sorbent for yttrium (Y) and strontium (Sr) removal from water. The nanocomposite exhibited soft magnetic behavior with a saturation magnetization of 6.96 emu/g. The sorption process involved mechanisms other than ion exchange, and the optimal pH was found to be 4.7. Kinetic analysis showed that the pseudo-second-order model provided the best fit, while the Freundlich and Langmuir models described the isotherm behavior of Y and Sr sorption, respectively. The nanocomposite demonstrated high desorption efficiency and reusability. Overall, Alg-CoFe2O4 nanocomposite showed great potential for Y and Sr sorption.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Biochemistry & Molecular Biology
Tae-Hyun Kim, Chihyun Seo, Jaeyoung Seon, Anujin Battulga, Yuhoon Hwang
Summary: Through controlling the weight ratio between Alg and BO, Alg-BO granulation was achieved and its iodide adsorption efficacy for different initial iodide concentrations and contact time values was explored. The results showed that Alg-BO exhibited high adsorption capacity, stability, convenience, and the ability to prevent secondary pollution.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Biotechnology & Applied Microbiology
Yixuan Guo, Nguyen Thi Hong Nhung, Xiang Dai, Chunlin He, Youbin Wang, Yuezhou Wei, Toyohisa Fujita
Summary: In this study, a novel teak peel modified biochar (PMBN3) was prepared and successfully applied for the removal of strontium from artificial seawater. PMBN3 exhibited excellent adsorption performance with rapid adsorption kinetics and good reusability. The adsorption isotherms and kinetic models indicated that the adsorption of strontium by biochar followed pseudo-second order and internal diffusion kinetics.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Polymer Science
Qi Jing, Yuheng Ma, Jingwen He, Zhongyu Ren
Summary: Nanoscale zero-valent iron (NZVI) supported by reduced graphene oxide (rGO) in the scaffold of sodium alginate (SA) gel beads (SA/NZVI-rGO) is an effective material for removing Cr(VI) in aqueous environments, with improved dispersion, oxidation resistance, and removal efficiency.
Article
Engineering, Environmental
Jiangbo Huo, Guoce Yu, Jianlong Wang
Summary: By preparing a composite of polyvinyl alcohol, graphene oxide, and MnO2, the adsorbent showed enhanced adsorption capacity for Co2+ and Sr2+. The composite exhibited high adsorption capacity under different pH conditions and different responses to interfering substances in competitive adsorption tests.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Applied
Huiping Zeng, Siqi Sun, Ke Xu, Weihua Zhao, Ruixia Hao, Jie Zhang, Dong Li
Summary: Magnetic alginate-chitosan double-gel interpenetrated porous beads loaded with iron (M-IACBs) were prepared for phosphate removal from water, showing good adsorption performance and stability. The beads, with uniform size and strong saturation magnetization intensity, exhibit good selectivity for phosphate and follow the Langmuir adsorption model.
REACTIVE & FUNCTIONAL POLYMERS
(2022)
Article
Environmental Sciences
Sang Joon Lee, Hyeong Woo Lim, Sung Ho Park
Summary: In this study, MOF-Alg(Cu)/PVA beads were fabricated for efficient removal of dissolved ions in artificial seawater. The beads exhibited high adsorption performance and stability, reducing the artificial seawater concentration to 1500 ppm in a multistage experiment.
Article
Engineering, Environmental
Botuo Zheng, Jiajia Yin, Lingdan Zhu, Bingnan Zhou, Hang Shen, David Harbottle, Timothy N. Hunter, Yu Sheng, Deqin Zhu, Huagui Zhang
Summary: This study developed an economical biomaterial-based hydrogel adsorbent with excellent Sr2+ adsorption performance achieved by ion-imprinting and abundant thiol groups. The hydrogel demonstrated superior Sr(2+) adsorption capacity and selectivity, as well as high elasticity and self-recovery properties. It could be adapted as a membrane for vacuum filtration, effectively removing Sr2+ from contaminated water at high efficiency.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Ammara Ayub, Nagesh C. Maile, Bolam Kim, Youngsu Lim, Ahsan Abdul Ghani, Muzammil Hussain, Kamakshaiah C. Devarayapalli, Gyuhyeon Kim, Myunggoo Kang, Jaechul Ha, Chun-Hyung Cho, Dae Sung Lee
Summary: A novel Sn/SnOx@Ti3C2Tx adsorbent was fabricated by in situ growth of Sn/SnOx particles on Ti3C2Tx nanosheets using electrostatic attraction and liquid-phase reduction. The Sn/SnOx particles were uniformly anchored onto the Ti3C2Tx surface, forming a sandwich-like-structured nanocomposite. The introduced particles increased the space between the nanosheets, providing more active sites for Sr2+ ion removal. The adsorption capacity of Sn/SnOx@Ti3C2Tx for Sr2+ ions was 71.04 mg/g at 298 K, and it showed promising potential for the removal of Sr2+ ions from aqueous media.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xianhui Wei, Xiakun Zhang, Zhan Yang, Liang Li, Haitao Sui
Summary: This study utilized nanotechnology to synthesize IONSs-HA-SR@C for bone repair, demonstrating its excellent physicochemical properties and bioactivity. The material showed advantages in promoting cell proliferation and differentiation, improving mechanical strength, and antibacterial activity, providing a potential solution for bone defect repair and infection prevention.
ARABIAN JOURNAL OF CHEMISTRY
(2021)
Article
Environmental Sciences
Muhammad Amir Zeb, Jasmin Shah, Muhammad Rasul Jan
Summary: In this study, alginate magnetic graphene oxide biocomposite was synthesized and used for the removal and extraction of aromatic amines from water samples. The physiochemical characteristics of the biocomposite were investigated and it was found to retain the functional groups of graphene oxide and alginate while possessing magnetic properties. The biocomposite was applied to water samples under optimized experimental conditions, and showed high adsorption capacities for aniline, p-chloroaniline, and p-nitroaniline. The study also suggested ethanol as the best eluent for the extraction process, and high percent recoveries were achieved for all three analytes, indicating the potential of the biocomposite as an effective and eco-friendly adsorbent for organic pollutant removal in water treatment processes.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Metallurgy & Metallurgical Engineering
Sung Ho Park, Yong-Zhu Yan, Jeongju Kim, Chang-Sik Ha, Sang Joon Lee
Summary: In this study, a novel strategy using the synergetic effect of Al3+-crosslinked alginate (Alg) and hydrogen manganese oxide (HMnO) is proposed for the separation of Li+ ions from concentrated seawater. The fabricated HMnO-incorporated Alg (HMnO/Alg(Al)) composite shows increased adsorption capability and selectivity compared to normal Alg composites. The proposed technique could serve as an efficient alternative to current state-of-the-art Li separation methods and facilitate the recovery of Li from concentrated seawater.
Article
Chemistry, Analytical
Young-Yong Ji, Chang-Jong Kim, Jong-Myoung Lim, Hyuncheol Kim, Kun Ho Chung
ACCREDITATION AND QUALITY ASSURANCE
(2016)
Article
Chemistry, Analytical
Young-Yong Ji, Jong-Myoung Lim, Hyuncheol Kim, Chang-Jong Kim, Chung-Sup Lim, Kun Ho Chung
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2017)
Article
Environmental Sciences
Hyuncheol Kim, Yoonhee Jung, Young-Yong Ji, Jong-Myung Lim, Kun Ho Chung, Mun Ja Kang
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
(2017)
Article
Chemistry, Analytical
Hyuncheol Kim, Jong-Myoung Lim, Kun Ho Chung, Wanno Lee
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2017)
Article
Chemistry, Analytical
Yonnhee Jung, Hyuncheol Kim, Jong-Myoung Lim, Kun Ho Chung
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2017)
Article
Environmental Sciences
Hye-Jin Hong, Byoung-Gyu Kim, Jungho Ryu, In-Su Park, Kang-Sup Chung, Sang Moon Lee, Jin-Bae Lee, Hyeon Su Jeong, Hyunchul Kim, Taegong Ryu
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2018)
Article
Engineering, Environmental
Hyuncheol Kim, Minsun Kim, Wanno Lee, Soonhyun Kim
JOURNAL OF HAZARDOUS MATERIALS
(2018)
Article
Engineering, Environmental
Hyuncheol Kim, Minsun Kim, Wooyul Kim, Wanno Lee, Soonhyun Kim
JOURNAL OF HAZARDOUS MATERIALS
(2018)
Article
Chemistry, Analytical
Hyuncheol Kim, Kun Ho Chung, Yoonhee Jung, Mee Jang, Mun ja Kang, Geun-Sik Choi
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2015)
Article
Chemistry, Analytical
Kun Ho Chung, Hyuncheol Kim, Jong Myoung Lim, Young-Yong Ji, Geun-Sik Choi, Mun Ja Kang
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2015)
Article
Environmental Sciences
Hyemi Cha, Mee Jang, Jong-Myoung Lim, Wanno Lee, Hyuncheol Kim
Summary: A prototype krypton sampling system was developed for the fully automated remote monitoring of covert nuclear activity. The system utilizes a hollow fiber membrane for impurity removal, a computer-controlled multi-position valve for sampling, and an electric cooler for adsorption. Experimental results demonstrate the system's high efficiency in impurity removal and continuous remote monitoring capability.
Article
Chemistry, Multidisciplinary
Shuvo Jit Datta, Peter Oleynikov, Won Kyung Moon, Yanhang Ma, Alvaro Mayoral, Hyuncheol Kim, Catherine Dejoie, Mee Kyung Song, Osamu Terasaki, Kyung Byung Yoon
ENERGY & ENVIRONMENTAL SCIENCE
(2019)
Article
Engineering, Environmental
Hye-Jin Hong, Byoung-Gyu Kim, Jeongsik Hong, Jungho Ryu, Taegong Ryu, Kang-Sup Chung, Hyunchul Kim, In-Su Park
CHEMICAL ENGINEERING JOURNAL
(2017)
Article
Chemistry, Analytical
Yoonhee Jung, Hyuncheol Kim, Kun Ho Chung, Mun Ja Kang
ANALYTICAL SCIENCE AND TECHNOLOGY
(2016)