Article
Environmental Sciences
Xiangcheng Shan, Yumeng Zhao, Shufeng Bo, Liyu Yang, Zuoyi Xiao, Qingda An, Shangru Zhai
Summary: A novel magnetic adsorbent AL-NH2@Fe3O4-Ce with high affinity for phosphate and excellent recyclability was developed for efficient phosphorus reclamation from wastewater. Batch experiments showed significantly higher phosphate adsorption capacity compared to aminated lignin and cerium oxide, indicating promising applications. Mechanisms of electrostatic attraction and inner-sphere complexation were proposed based on XPS analysis and batch experiments, showcasing the potential of AL-NH2@Fe3O4-Ce as a future adsorbent for phosphate removal processes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Physical
Yaohui Xu, Liangjuan Gao, Jinyuan Yang, Qingxiu Yang, Wanxin Peng, Zhao Ding
Summary: A porous CeO2 was successfully synthesized using guanidine carbonate, hydrogen peroxide, and hydrothermal treatment. The optimal experimental parameters were determined based on the adsorption efficiency of AO7 dye. The template-free hydrothermal strategy avoided the use of templates and tedious template elimination procedures, aligning with the goals of energy conservation and emission reduction. The porous CeO2 exhibited rapid adsorption capacities for AO7 dye with high removal efficiencies. The study also demonstrated the recyclability of porous CeO2 using a NaOH aqueous solution. This research provides an alternative adsorbent for dye wastewater treatment and introduces a template-free hydrothermal strategy for the design of CeO2-based catalysts or carriers.
Article
Engineering, Environmental
Du Chen, Hui Yu, Meilan Pan, Bingjun Pan
Summary: The development of phosphate-selective adsorbents is crucial for tackling eutrophication-related issues and scarcity of phosphorus resources. In this study, a new imine-functionalized adsorbent (N=C@CMPS) was synthesized, which exhibited excellent phosphate selectivity and adsorption capacity, primarily attributed to the imine group's specific hydrogen bonding interaction with phosphate species at neutral pH. Furthermore, the adsorbent showed broad applicability over a wide pH range and could be efficiently regenerated with a combination of dilute NaOH and HNO3 solutions.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Green & Sustainable Science & Technology
Zijun Yang, Jun Hou, Zhengguo Pan, Miao Wu, Mingzhi Zhang, Xuexue Yin, Jun Wu, Lingzhan Miao, Qidi Liu
Summary: La@TP@Fe3O4 is a magnetic composite material that is co-grafted with tannin and polyethyleneimine (PEI). It has high phosphate adsorption capacity and can remove phosphate quickly, while being less affected by various coexisting ions.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
John Edward L. Sio, Erwin C. Escobar, Hern Kim, Wook-Jin Chung, Grace M. Nisola
Summary: A magnetic adsorbent HPCA@SiO2@Fe3O4 with high HPCA loading and good stability was developed for Co (II) recovery from liquid waste.
Article
Engineering, Chemical
Artik Elisa Angkawijaya, Yen Nhi Tran-Chuong, Quoc Nam Ha, Phuong Lan Tran-Nguyen, Shella Permatasari Santoso, Vania Bundjaja, Alchris Woo Go, Hsien-Yi Hsu, Yi-Hsu Ju
Summary: This study developed an environmentally friendly magnetic adsorbent Fe3O4/thiamine, which showed high efficiency in removing phosphate pollution from water sources without affecting plant growth. The research provides an effective technical approach to address the issue of eutrophication caused by agricultural fertilizers in water sources.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Engineering, Chemical
Raheleh Zafari, Fernanda G. Mendonca, R. Tom Baker, Clemence Fauteux-Lefebvre
Summary: Adsorbents made from amine-functionalized cellulose were studied for SO2 capture, showing a significantly higher adsorption capacity compared to pristine nanocrystalline cellulose. The effects of functionalization time, temperature, and amount of amine were assessed, and the adsorption mechanism for SO2 capture was confirmed. The study also investigated the impact of different operating adsorption temperatures and flow rates on the capture capacity and breakthrough time of SO2.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Jialin Wu, Xuan Liu, Rumeng Zhang, Jianbin Zhang, Huayan Si, Zhaojun Wu
Summary: This study proposes a simultaneous titration-calcination strategy to synthesize a novel core-shell type composite adsorbent with strong stability for CO2 capture. By doping CeO2 as an inert dopant, the adsorption activity of the adsorbent is enhanced, and the ion migration during the carbonation process is promoted. The Ca/Ce doping ratio of 24:1 exhibits the best CO2 capture performance, and the adsorption amount remains stable after multiple cycles.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Younes Ahmadi, Ki-Hyun Kim
Summary: Effective control of environmental pollutants is crucial for managing environmental systems. Hyper branched polymers (HPs) have been recognized for their potential as adsorbents for mitigating environmental pollutants. This review highlights the recent progress in designing and constructing HPs with high adsorption potentials. The review focuses on adsorption mechanisms, functionalization methods, the role of functional groups, and the choice of HPs for adsorption. It evaluates the efficiency of pollutant removal through adsorption and compares the performance of HPs with other systems. The review also highlights the potential of new materials and their preparation/modification methods for constructing efficient adsorbing systems. Finally, the advantages and limitations of adsorbing systems are described, along with the existing challenges, to provide guidelines for future research.
ADVANCES IN COLLOID AND INTERFACE SCIENCE
(2022)
Article
Environmental Sciences
Tuan Van Truong, Dong-Jin Kim
Summary: Thermal treatment and drying of alum sludge can enhance its efficiency as an adsorbent for phosphate removal from wastewater. Research shows that pyrolysis at 700 degrees Celsius is the most effective method in removing phosphate without causing secondary pollution.
ENVIRONMENTAL RESEARCH
(2021)
Article
Environmental Sciences
Hongxu Liang, Hongwei Zhang, Qiang Wang, Chenyang Xu, Zengchao Geng, Diao She, Xuguang Du
Summary: This research developed a highly selective phosphate adsorbent, microporous carbon material (MCM) based on glucose, which has efficient phosphate removal performance and reusability. The MCM showed high adsorption capacity for phosphate in various water types, with removal rates above 99.98%, and its main phosphate adsorption mechanisms were investigated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Review
Thermodynamics
Chang Wen, Tianyu Liu, Dapeng Wang, Yaqin Wang, Hanping Chen, Guangqian Luo, Zijian Zhou, Changkang Li, Minghou Xu
Summary: The combustion of fossil fuels in human industrial activities results in the emission of pollutants. Using novel solid sorbents, such as biochar, can effectively capture gaseous pollutants. Various activation and modification methods can optimize the sorbents' properties and enhance their adsorption performance. However, further research is needed to fully understand the adsorption mechanisms, explore industrial applications, and evaluate the economic feasibility and energy-saving potential.
PROGRESS IN ENERGY AND COMBUSTION SCIENCE
(2023)
Article
Biotechnology & Applied Microbiology
Gulcihan Guzel Kaya
Summary: The study evaluated volcanic tuff as a solid CO2 adsorbent, and found that the presence of 1,6-diaminohexane significantly enhanced the CO2 adsorption capacity of the volcanic tuff. The functionalized volcanic tuff also showed high stability as a reusable CO2 adsorbent. Therefore, volcanic tuff can be considered a promising and cost-effective material for CO2 capture.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Engineering, Environmental
Ruiting Liu, Jian Shen, Xiaojuan He, Lina Chi, Xinze Wang
Summary: The newly developed MF-HA sponge showed excellent adsorption performance across a wide pH range, with high uptake capacity and endothermic adsorption process. Additionally, the sponge could be easily separated from the solution and demonstrated good recyclability.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Ning Pan, Jiao Tang, Dezhi Hou, Hao Lei, Daohui Zhou, Jie Ding
Summary: A low-cost and efficient method for synthesizing iron phosphate was developed by combining phosphoric acid precursor synthesis and co-precipitation method. The uranium adsorption capacity of FeyPz was significantly enhanced by tuning the synthesis conditions, and the material showed excellent reusability.
CHEMICAL ENGINEERING JOURNAL
(2021)