Separation and Purification Technology
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#1Dafeng Zhang (Liaocheng University)H-Index: 20
#2Shuhui Liang (Liaocheng University)H-Index: 3
Last. Xipeng Pu (Liaocheng University)H-Index: 21
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Abstract Bi4O5I2 has attracted much attention as a visible-light-driven photocatalyst, but its photocatalytic activity should be further improved for future practical application. Herein, we design and prepared Er3+/Yb3+ co-doped Bi4O5I2 nanosheets by a facile solvothermal method. The samples were characterized by XRD, SEM, TEM, XPS, DRS, PL, and EIS. The photocatalytic activities of samples were evaluated by the degradation of RhB and imidacloprid. Among these doped samples, the Bi4O5I2: Er1%,Y...
Abstract A cerium (Ce) mediated photoelectrochemical oxidation (MPEO)/H2O2 system, integrating UV photocatalysis and hydroxyl radical (⋅OH) oxidation, was developed to improve the degradation of sulfamethazine (SMT). SMT is an emerging contaminant with medical toxicity in environmental matrices. In the study of electrolytic production of Ce(IV), the Ce(III)/Ce(IV) redox reaction was found to have good reversibility at high HNO3 concentrations above 0.5 M, due to more cerium ions being trapped by...
#1Qingteng Lai (CUMT: China University of Mining and Technology)
#2Yinfei Liao (CUMT: China University of Mining and Technology)H-Index: 5
Last. Zechen Liu (CUMT: China University of Mining and Technology)H-Index: 2
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Abstract Slow filtration rate and high moisture content of filter cake have become increasingly pronounced with decreasing particle size especially for low-rank coal slime, which hamper the clean and efficient use of resources. Herein, the effect of physical structure of filter cakes on filtration are studied in terms of filtration rate and moisture content of filter cakes. For coarse particles (125–147 μm), the filtration time can be reduced from 41 to 35 s by adding chemicals, and a further re...
Abstract In view of the worldwide concern over the environmental impact of improper disposal of spent batteries, the production of value-added products from these metal-containing wastes can provide motivation for their efficient collection and recycling. In this study, the production of silver nanoparticles (AgNPs) directly from spent silver oxide button cell batteries via a leaching-purification-reduction method was investigated for the first time. After dismantling of batteries and physical s...
Abstract Supercritical CO2 produced by CO2 plume geothermal systems can be used in Brayton cycles if entrained water is removed. A physical parameter analysis indicated that the supercritical CO2-water mixture presented a gas-liquid phase, and an improved axial-flow cyclone was designed to realize the separation. This study was conducted using computational fluid dynamics to simulate three parts of the flow, including continuous supercritical CO2, discrete water droplets and the water film. A Re...
#1Xiangquan Kong (Jilin Normal University)
#2Jinying Li (Jilin Normal University)
Last. Dong Wang (DUT: Dalian University of Technology)H-Index: 11
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Abstract Bisphenol A (BPA) is a typical endocrine-disrupting chemical. Because BPA cannot be completely degraded by traditional sewage treatment plants, alternative technology is urgently needed. Photocatalytic degradation using sunlight is attractive due to its efficiency, low cost, and environmental friendliness. In this study, a photocatalyst, Fe2O3/g-C3N4@N-TNA, was synthesized by doping with N and loading Fe2O3 and graphitic carbon nitride (g-C3N4) onto TiO2 nanotube arrays (TNAs). The morp...
Abstract Recovery of gold from electronic waste (e-waste) has received significant attention due to its high economic value. This study reports glutaraldehyde-crosslinked chitosan (GCC) beads as highly efficient bioadsorbents for the separation of auric ions (Au(III)) from acidic e-waste leaching solutions. With increasing extent of glutaraldehyde-crosslinking, the GCC beads showed enhanced adsorption selectivity and capacity toward Au(III). The Au(III) adsorption capacity, however, was saturate...
#1Mingming Wu (Ministry of Education)
#2Peng Mu (Ministry of Education)
Last. Jian Li (Ministry of Education)
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Abstract Faced with the severe challenge of water resources contaminated by oily organic solvents and dyes, water pollution has caught the attention of the world. Materials with special wettability to deal with oily pollution have been successively reported, but the multifunctional materials with separation multi-type oil/water emulsions and water-soluble dyes are still rare. In this work, a multifunctional separation membrane was prepared through depositing pine powders (PPs) onto the polyvinyl...
#1Huimin Hu (WUT: Wuhan University of Technology)H-Index: 6
#2Qiwu Zhang (WUT: Wuhan University of Technology)H-Index: 16
Last. Yanchu Liu (WUT: Wuhan University of Technology)H-Index: 1
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Abstract Iron removal is an inevitable step when recycling copper from wastewater. A new process is proposed to enhance iron removal selectively from copper sulfate solution through its chemical precipitation on the surfaces of dolomite (CaMg(CO3)2), which is a widely available cheap carbonate mineral. A heterogeneous precipitating reaction of iron ions on the surface of dolomite at 50℃ allowed for an efficient iron removal of 98.41% with only copper loss of 3.18% under optimized conditions. Dif...
Abstract Decarbonization of methane is essential in many applications such as biogas and natural gas. Solvents with high selectivity towards CO2 are required for the upgradation of biogas and natural gas. Deep eutectic solvents (DESs) sharing green properties of ionic liquids have shown the ability to capture CO2 selectively. In this work, we have synthesized four novel secondary amine-based DESs using quaternary ammonium salt as hydrogen bond acceptor. The CO2 and CH4 uptake of the synthesized ...
Top fields of study
Inorganic chemistry