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Control strategies for disinfection byproducts by ion exchange resin, nanofiltration and their sequential

《环境科学与工程前沿（英文）》 2023年 第17卷 第10期 doi: 10.1007/s11783-023-1725-x

摘要：

● Effects of AER adsorption and NF on DBP precursors, DBPs, and TOX were examined.

关键词： Disinfection byproducts     Control     Anion exchange resin     Nanofiltration     Cytotoxicity    

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Preparation of a novel anion exchange group modified hyper-crosslinked resin for the effective adsorption

Qing ZHOU, Mengqiao WANG, Aimin LI, Chendong SHUANG, Mancheng ZHANG, Xiaohan LIU, Liuyan WU

《环境科学与工程前沿（英文）》 2013年 第7卷 第3期   页码 412-419 doi: 10.1007/s11783-013-0483-6

摘要： A novel hyper-crosslinked resin (MENQ) modified with an anion exchange group was prepared using divinylbenzene (DVB) and methyl acrylate (MA) as comonomers via four steps: suspension polymerization, post-crosslinking, ammonolysis and alkylation reactions. The obtained resin had both a high specific surface area (793.34 m ·g ) and a large exchange capacity (strong base anion exchange capacity, SEC: 0.74 mmol·g , weak base anion exchange capacity, WEC: 0.45 mmol·g ). XAD-4 was selected as an adsorbent for comparison to investigate the adsorption behavior of tetracycline (TC) and humic acid (HA) onto the adsorbents. The results revealed that MENQ could effectively remove both TC and HA. The adsorption capacity of XAD-4 for TC was similar to that of MENQ, but XAD-4 exhibited poor performance for the adsorption of HA. The adsorption isotherms of TC and HA were well-fitted with the Freundlich model, which indicated the existence of heterogeneous adsorption through cation-π bonding and π–π interactions. The optimal solution condition for the adsorption of TC was at a pH of 5–6, whereas the adsorption of HA was enhanced with increasing pH of the solution.

关键词： high surface area     adsorption     anion exchange     micropollutant     dissolved organic matters    

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Process study on adsorption of glycerin from saline wastewater by strong base anion resin

Haitao ZHANG, Xiaoqing MA, Xian QU, Jeanpierre Arcangeli

《化学科学与工程前沿（英文）》 2011年 第5卷 第1期   页码 113-116 doi: 10.1007/s11705-010-0547-0

摘要： A physicochemical method was used to adsorb glycerin in saline wastewater by strong base anion resin (D201). Boric acid, a kind of weak acid, can combine with glycerin, and a specific complex can be produced, which possess bigger molecule than glycerin. Then, this specific complex could be adsorbed by strong base anion resin. Via the experiment, the equation of adsorption isotherm with D201 at 20°C can be shown by lg / = 1.74lg - 5.72; for column test with simulative glycerin wastewater, the treatment capability was more than nine bed volumes, and 39.77 mg glycerin could be removed by per gram resin. When the NaCl concentration was 10 g/L, five bed volumes of simulative wastewater could be treated, and the adsorb mass was 29.09 mg/g. When the NaCl concentration was 30 g/L, only three bed volumes of simulative wastewater could be treated, and the adsorb mass was 14.83 mg/g.

关键词： glycerin     anion resin     boric acid     wastewater     NaCl    

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acetylene/carbon dioxide separation with excellent dynamic capacity and low regeneration energy by anion-pillared

《化学科学与工程前沿（英文）》   页码 1616-1622 doi: 10.1007/s11705-022-2183-x

摘要： Adsorptive separation of acetylene/carbon dioxide mixtures by porous materials is an important and challenging task due to their similar sizes and physical properties. Here, remarkable acetylene/carbon dioxide separation featuring a high dynamic breakthrough capacity for acetylene (4.3 mmol·g–1) as well as an ultralow acetylene regeneration energy (29.5 kJ·mol–1) was achieved with the novel TiF62–-pillared material ZU-100 (TIFSIX-bpy-Ni). Construction of a pore structure with abundant TiF62– anion sites and pores with appropriate sizes enabled formation of acetylene clusters through hydrogen bonds and intermolecular interactions, which afforded a high acetylene capacity (8.3 mmol·g–1) and high acetylene/carbon dioxide uptake ratio (1.9) at 298 K and 1 bar. Moreover, the NbO52– anion-pillared material ZU-61 investigated for separation of acetylene/carbon dioxide. In addition, breakthrough experiments were also conducted to further confirm the excellent dynamic acetylene/carbon dioxide separation performance of ZU-100.

关键词： adsorption     acetylene/carbon dioxide separation     dynamic capacity     anion-pillared hybrid material    

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Removal of dissolved oxygen from water using a Pd-resin based catalytic reactor

Wenxin SHI, Chongwei CUI, Liye ZHAO, Shuili YU, Xia YUN

《化学科学与工程前沿（英文）》 2009年 第3卷 第1期   页码 107-111 doi: 10.1007/s11705-009-0154-0

摘要： The removal of dissolved oxygen (DO) from water was studied experimentally in a Pd-resin base catalyst reactor using purified hydrogen gas as a reducing agent. The effects of various operating conditions, such as hydrogen and water flow rates, height of the catalytic resin bed, temperature, pH value and run time, on the removal of DO, had been studied extensively. The results shows that DO could be removed by the reactor from ppm to ppb levels at ambient temperature. Increases of temperature, H gas rate and the height of the catalytic resin were helpful to improve the DO removal rate. The change of pH value from 4 to 12 resulted in no effect on DO removal. Reaction time was the key factor to control the DO removal efficiency. Only when the reaction time was longer than 2.3 minutes under the experimental conditions, could a very low DO level be achieved.

关键词： dissolved oxygen     palladium     catalytic reactor     hydrogen     resin    

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Enhanced adsorption of phosphate by loading nanosized ferric oxyhydroxide on anion resin

Jing REN,Nan LI,Lin ZHAO,Nanqi REN

《环境科学与工程前沿（英文）》 2014年 第8卷 第4期   页码 531-538 doi: 10.1007/s11783-014-0629-1

摘要： Ferric oxyhydroxide loaded anion exchanger (FOAE) hybrid adsorbent was prepared by loading nanosized ferric oxyhydroxide (FO) on anion exchanger resin for the removal of phosphate from wastewater. TEM and XRD analysis confirmed the existence of FO on FOAE. After FO loading, the adsorption capacity of the hybrid adsorbent increased from 38.70 to 51.52 mg·g . Adsorption processes for both FOAE and anion resin were better fit to the pseudo first order model. Batch adsorption experiments revealed that higher temperature (313K), higher initial phosphate concentration (50 mg·L ) and lower solution pH (pH value of 2) would be more propitious to phosphate adsorption. Competition effect of coexisting anions on phosphate removal can be concluded as sulfate>nitrate>chloride. Freundlich isotherm model can describe the adsorption of phosphate on FOAE more accurately, which indicated the heterogeneous adsorption occurred on the inner-surface of FOAE.

关键词： phosphate removal     adsorption     nanosized ferric oxyhydroxide     anion exchanger    

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Impregnation of thermoplastic resin in jute fiber mat

LIU Xiaoye, DAI Gance

《化学科学与工程前沿（英文）》 2008年 第2卷 第2期   页码 145-149 doi: 10.1007/s11705-008-0030-3

摘要： Impregnation rate of thermoplastic resin (polypropylene) in jute fiber mat and influence of relative factors on impregnation were studied, aiming to develop the continuous melt impregnation technique and to investigate the effect of impregnation rate and temperature on processing conditions and mechanical properties of natural fiber mat-reinforced thermoplastics. Influence of pressure on porosity of fiber mat and effect of melt viscosity on impregnation rate were also investigated. The modified capillary rheometer was used as apparatus and experimental data were analyzed based on the one-dimension Darcy’s law. Results showed that at a given pressure, the impregnation rate is inversely proportional to melt viscosity and jute fiber mat has higher porosity than glass fiber mat. The architecture, compressibility, permeability and fiber diameter of jute fiber mat were compared with those of glass fiber mat and their effects on impregnation were discussed further. It could be seen that the average diameter of jute fiber is much bigger; the porosity of jute fiber mat is significantly higher and inner bundle impregnation does not exist in jute fiber mat. Therefore, it is not difficult to understand why the impregnation rate in jute fiber mat is 3.5 times higher and permeability is 14 times greater. Kozeny constants of jute and glass fiber mats calculated based on the capillary model are 2950 and 442, respectively.

关键词： polypropylene     diameter     influence     proportional     impregnation    

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Tetrazole tethered polymers for alkaline anion exchange membranes

Erigene Bakangura, Yubin He, Xiaolin Ge, Yuan Zhu, Liang Wu, Jin Ran, Congliang Cheng, Kamana Emmanuel, Zhengjin Yang, Tongwen Xu

《化学科学与工程前沿（英文）》 2018年 第12卷 第2期   页码 306-310 doi: 10.1007/s11705-017-1690-7

摘要： Poly(2,6-dimethyl-1,4-phenylene oxide) was tethered with a 1,5-disubstituted tetrazole through a quaternary ammonium linkage. The formation of a tetrazole-ion network in the resulting polymers was found to promote the hydroxide ion transport through the Grotthus-type mechanism.

关键词： anion exchange membrane     fuel cell     phase separation     tetrazole    

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Adsorption of 1,3-propanediol from synthetic mixture using polymeric resin as adsorbents

W. LUERRUK, A. SHOTIPRUK, V. TANTAYAKOM, P. PRASITCHOKE, C. MUANGNAPOH

《化学科学与工程前沿（英文）》 2009年 第3卷 第1期   页码 52-57 doi: 10.1007/s11705-009-0087-7

摘要： The aim of this work was to separate 1,3-PDO from a synthetic mixture using polymeric resins, Amberlite XAD-7 and XAD-16 resins. The equilibrium adsorption of 1,3-PDO onto two polymeric resins were investigated in binary and tertiary systems. Experimental results of binary component adsorption equilibrium indicated that the adsorption capacity ( ) of 1,3-PDO at 160 g/L onto XAD-7 and XAD-16 was 835.96 and 584.61 mg 1,3-PDO/g dry resin, respectively. The adsorption isotherms were closely predicted by the Langmuir-Freundlich model among the two isotherm model tested. The value of n of 1,3-PDO adsorbed on XAD-7 are much higher than those on XAD-16. This result suggested that XAD-7 resin has a higher affinity for the 1,3-PDO adsorption than XAD-16 resin. Moreover, the value of adsorption capacity of 1,3-PDO in the binary and tertiary component were compared at the same conditions. In the tertiary system, although the selectivity of 1,3-PDO from XAD-7 was approximately six times higher than XAD-16, the adsorption capacity of 1,3-PDO at 160 g/L onto XAD-16 was higher than XAD-7. Interestingly, the reusability of XAD-7 and XAD-16 resins in the three cycle times shows a slight loss of adsorption capacity. Furthermore, the investigation about desorption by an ethanol/water mixture at 50% ( / ) indicated that the desorption yield of 1,3-PDO from XAD-7 was lower than XAD-16 resin for both the binary and tertiary component. This was due to the more favorable adsorption characteristics of XAD-7 resin than XAD-16 resin.

关键词： adsorption     1     3-propanediol     glycerol     polymeric resin     adsorption isotherm    

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Comparison between two commercial uranium resins and a uranyl sulphate imprinted resin based on self-assembling

LIU Yaochi, XU Wei, XU Weijian, LIU Hanmao, ZHANG Xiaowen

《化学科学与工程前沿（英文）》 2007年 第1卷 第4期   页码 327-331 doi: 10.1007/s11705-007-0059-8

摘要： In recent years, resins prepared via molecular imprinting technology have received considerable attention owing to their recognition and selective adsorption. This paper deals with the comparative investigation between a uranyl sulphate imprinted ion-exchange based on self-assembling molecular imprinting technology and two kinds of commercial uranium resins (the medium pore resin D263 and strong base resin 201×7). The studies were focused on their kinetics performance, adaptability toward pH, and performance of saturation and elution in laboratory-scale column. The results show that the imprinted ion exchange resin has the fast kinetics, high adaptability toward pH, and good adsorption and elution performance.

关键词： saturation     molecular imprinting     imprinting technology     adaptability     commercial    

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Performance of steel bridge deck pavement structure with ultra high performance concrete based on resin

《结构与土木工程前沿（英文）》 2021年 第15卷 第4期   页码 895-904 doi: 10.1007/s11709-021-0759-z

摘要： This research investigated a pavement system on steel bridge decks that use epoxy resin (EP) bonded ultra-high performance concrete (UHPC). Through FEM analysis and static and dynamic bending fatigue tests of the composite structure, the influences of the interface of the pavement layer, reinforcement, and different paving materials on the structural performance were compared and analyzed. The results show that the resin bonded UHPC pavement structure can reduce the weld strain in the steel plate by about 32% and the relative deflection between ribs by about 52% under standard axial load conditions compared to traditional pavements. The EP bonding layer can nearly double the drawing strength of the pavement interface from 1.3 MPa, and improve the bending resistance of the UHPC structure on steel bridge decks by about 50%; the bending resistance of reinforced UHPC structures is twice that of unreinforced UHPC structure, and the dynamic deflection of the UHPC pavement structure increases exponentially with increasing fatigue load. The fatigue life is about 1.2 × 107 cycles under a fixed force of 9 kN and a dynamic deflection of 0.35 mm, which meets the requirements for fatigue performance of pavements on steel bridge decks under traffic conditions of large flow and heavy load.

关键词： steel bridge deck pavement     ultra-high-performance concrete     epoxy resin     composite structure     bending fatigue performance    

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Self-extinguishing and transparent epoxy resin modified by a phosphine oxide-containing bio-based derivative

Gang Tang, Ruiqing Zhao, Dan Deng, Yadong Yang, Depeng Chen, Bing Zhang, Xinliang Liu, Xiuyu Liu

《化学科学与工程前沿（英文）》 2021年 第15卷 第5期   页码 1269-1280 doi: 10.1007/s11705-021-2042-1

摘要： A phosphine oxide-containing bio-based curing agent was synthesized by addition reaction between furan derivatives and diphenylphosphine oxide. The molecular structure of the as-prepared bio-based curing agent was confirmed by Fourier transform infrared spectroscopy and nuclear magnetic resonance spectroscopy. Dynamic mechanical analysis results indicated that with the increase of bio-based curing agent content, the glass transition temperature of epoxy/bio-based curing agent composites decreased, which was related to the steric effect of diphenylphosphine oxide species that possibly hinder the curing reaction as well as the reduction in the cross-linking density by mono-functional N H. By the addition of 7.5 wt-% bio-based curing agent, the resulting epoxy composite achieved UL-94 V-0 rating, in addition to limiting oxygen index of 32.0 vol-%. With the increase of content for the bio-based curing agent, the peak of heat release rate and total heat release of the composites gradually decreased. The bio-based curing agent promoted the carbonization of the epoxy matrix, leading to higher char yield with good thermal resistance. The high-quality char layer served as an effective barrier to retard the diffusion of decomposition volatiles and oxygen between molten polymers and the flame. This study provides a renewable strategy for fabricating flame retardant and transparent epoxy thermoset.

关键词： epoxy resin     flame retardant     furan derivative     diphenylphosphine oxide    

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Anion-exchange membrane direct ethanol fuel cells: Status and perspective

T.S. Zhao, Y.S. Li, S.Y. Shen

《能源前沿（英文）》 2010年 第4卷 第4期   页码 443-458 doi: 10.1007/s11708-010-0127-5

摘要： Direct ethanol fuel cells (DEFCs) are a promising carbon-neutral and sustainable power source for portable, mobile, and stationary applications. However, conventional DEFCs that use acid proton-exchange membranes (typically Nafion type) and platinum-based catalysts exhibit low performance (i.e., the state-of-the-art peak power density is 79.5 mW/cm at 90°C). Anion-exchange membrane (AEM) DEFCs that use low-cost AEM and non-platinum catalysts have recently been demonstrated to yield a much better performance (i.e., the state-of-the-art peak power density is 160 mW/cm at 80°C). This paper provides a comprehensive review of past research on the development of AEM DEFCs, including the aspects of catalysts, AEMs, and single-cell design and performance. Current and future research challenges are identified along with potential strategies to overcome them.

关键词： fuel cell     direct ethanol fuel cells     anion-exchange membrane     ethanol oxidation reaction     oxygen reduction reaction     cell performance    

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Condensation of phenol and acetone on a modified macroreticular ion exchange resin catalyst

Baohe WANG, Lili WANG, Jing ZHU, Shuang CHEN, Hao SUN

《化学科学与工程前沿（英文）》 2013年 第7卷 第2期   页码 218-225 doi: 10.1007/s11705-013-1330-9

摘要： Macroreticular ion exchange resin catalysts were prepared by suspension polymerization, and then modified by alkylmercaptoamines. The modified catalysts were characterized by N adsorption/desorption measurements, scanning electron microscopy and differential scanning calorimetry. Key factors such as the mercaptan content, the degree of crosslinking and the structures of the promoters were investigated for the synthesis of Bisphenol A (BPA). At optimal conditions, the macroreticular ion exchange resin catalysts modified by alkylmercaptoamines showed high catalytic activity and selectivity for BPA synthesis.

关键词： macroreticular ion exchange resin     catalysts     suspension polymerization     Bisphenol A    

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Exceptionally flame-retardant flexible polyurethane foam composites: synergistic effect of the silicone resin

Qian Wu, Jincheng Zhang, Shengpeng Wang, Bajin Chen, Yijun Feng, Yongbing Pei, Yue Yan, Longcheng Tang, Huayu Qiu, Lianbin Wu

《化学科学与工程前沿（英文）》 2021年 第15卷 第4期   页码 969-983 doi: 10.1007/s11705-020-1988-8

摘要： A facile strategy was developed to fabricate flexible polyurethane (PU) foam composites with exceptional flame retardancy. The approach involves the incorporation of graphene oxide (GO) into a silicone resin (SiR) solution, which is then deposited onto a PU foam surface via the dip-coating technique and cured. Fourier-transform infrared spectroscopy, scanning electron microscopy, and Raman spectroscopy measurements demonstrated that the SiR and GO were successfully coated onto the PU skeleton and the intrinsic porous structure of the PU foam remained intact. The effects of SiR and GO on the mechanical and thermal stability and flame retardancy of PU composites were evaluated through compression tests, thermogravimetric analysis, vertical combustion tests, and the limiting oxygen index. The measurement results revealed that the composites (PU@SiR-GO) showed superior flame retardancy and thermal and mechanical stability compared to pristine PU or PU coated with SiR alone. The mechanical and thermal stability and the flame-retardant properties of the PU composites were enhanced significantly with increasing GO content. Based on the composition, microstructure, and surface morphology of PU@SiR-GO composites before and after combustion tests, a possible flame-retardance mechanism is proposed. This work provides a simple and effective strategy for fabricating flame-retardant composites with improved mechanical performance.

关键词： flame retardancy     flexible polyurethane foam     graphene oxide     silicone resin    

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标题 作者 时间 类型 操作

Control strategies for disinfection byproducts by ion exchange resin, nanofiltration and their sequential

期刊论文

Preparation of a novel anion exchange group modified hyper-crosslinked resin for the effective adsorption

Qing ZHOU, Mengqiao WANG, Aimin LI, Chendong SHUANG, Mancheng ZHANG, Xiaohan LIU, Liuyan WU

期刊论文

Process study on adsorption of glycerin from saline wastewater by strong base anion resin

Haitao ZHANG, Xiaoqing MA, Xian QU, Jeanpierre Arcangeli

期刊论文

acetylene/carbon dioxide separation with excellent dynamic capacity and low regeneration energy by anion-pillared

期刊论文

Removal of dissolved oxygen from water using a Pd-resin based catalytic reactor

Wenxin SHI, Chongwei CUI, Liye ZHAO, Shuili YU, Xia YUN

期刊论文

Enhanced adsorption of phosphate by loading nanosized ferric oxyhydroxide on anion resin

Jing REN,Nan LI,Lin ZHAO,Nanqi REN

期刊论文

Impregnation of thermoplastic resin in jute fiber mat

LIU Xiaoye, DAI Gance

期刊论文

Tetrazole tethered polymers for alkaline anion exchange membranes

Erigene Bakangura, Yubin He, Xiaolin Ge, Yuan Zhu, Liang Wu, Jin Ran, Congliang Cheng, Kamana Emmanuel, Zhengjin Yang, Tongwen Xu

期刊论文

Adsorption of 1,3-propanediol from synthetic mixture using polymeric resin as adsorbents

W. LUERRUK, A. SHOTIPRUK, V. TANTAYAKOM, P. PRASITCHOKE, C. MUANGNAPOH

期刊论文

Comparison between two commercial uranium resins and a uranyl sulphate imprinted resin based on self-assembling

LIU Yaochi, XU Wei, XU Weijian, LIU Hanmao, ZHANG Xiaowen

期刊论文

Performance of steel bridge deck pavement structure with ultra high performance concrete based on resin

期刊论文

Self-extinguishing and transparent epoxy resin modified by a phosphine oxide-containing bio-based derivative

Gang Tang, Ruiqing Zhao, Dan Deng, Yadong Yang, Depeng Chen, Bing Zhang, Xinliang Liu, Xiuyu Liu

期刊论文

Anion-exchange membrane direct ethanol fuel cells: Status and perspective

T.S. Zhao, Y.S. Li, S.Y. Shen

期刊论文

Condensation of phenol and acetone on a modified macroreticular ion exchange resin catalyst

Baohe WANG, Lili WANG, Jing ZHU, Shuang CHEN, Hao SUN

期刊论文

Exceptionally flame-retardant flexible polyurethane foam composites: synergistic effect of the silicone resin

Qian Wu, Jincheng Zhang, Shengpeng Wang, Bajin Chen, Yijun Feng, Yongbing Pei, Yue Yan, Longcheng Tang, Huayu Qiu, Lianbin Wu

期刊论文