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Simultaneous removal of arsenate and fluoride from water by Al-Fe (hydr)oxides

Junlian QIAO, Zimin CUI, Yuankui SUN, Qinghai HU, Xiaohong GUAN

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 2,   Pages 169-179 doi: 10.1007/s11783-013-0533-0

Abstract: ∶1, 1∶4, 0∶1) were prepared using a co-precipitation method and were then employed for simultaneous removalof arsenate and fluoride.The 4Al:Fe was superior to other adsorbents for removal of arsenate and fluoride in the pH range of 5.0adsorbent by 4Al:Fe indicated that the adsorption of arsenate and fluoride by Al-Fe (hydr)oxides waswas mainly determined by the presence of fluoride since fluoride was generally present in groundwater

Keywords： Al-Fe (hydr)oxides     groundwater     adsorption     hydroxyl group     ligand exchange    

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Removal of fluoride from water using titanium-based adsorbents

Zhijian LI, Shubo DENG, Xueying ZHANG, Wei ZHOU, Jun HUANG, Gang YU

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 4,   Pages 414-420 doi: 10.1007/s11783-010-0241-y

Abstract: Three adsorbents including TiO , Ti-Ce, and Ti-La hybrid oxides were prepared to remove fluoride fromThe sorption isotherms fitted the Langmuir model well, and the adsorption capacities of fluoride on theTi-Ce and Ti-La adsorbents were about 9.6 and 15.1 mg·g , respectively, at the equilibrium fluorideThe sorption capacities of fluoride on the three adsorbents decreased significantly when the solutionThe electrostatic interaction played an important role in fluoride removal by the three adsorbents, and

Keywords： fluoride adsorption     titanium dioxide     titanium-based adsorbent     sorption mechanism    

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Utilization of aluminum hydroxide waste generated in fluoride adsorption and coagulation processes foradsorptive removal of cadmium ion

Jiawei JU,Ruiping LIU,Zan HE,Huijuan LIU,Xiwang ZHANG,Jiuhui QU

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 3,   Pages 467-476 doi: 10.1007/s11783-015-0809-7

Abstract: Although Al-based coagulation and adsorption processes have been proved highly efficient for fluoride(F) removal, the two processes both generate large amount of Al(OH) solid waste containing F (Al(OHClass-I Industrial Wastewater Discharge Standard for fluoride (<10 mg·L ).This study demonstrates that the Al(OH) solid wastes generated in fluoride removal process could bepotentially utilized as a adsorbent for Cd(II) removal.

Keywords： Al(OH)3     fluoride     cadmium     adsorption     reclamation     sequential extraction    

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Fluoride removal from secondary effluent of the graphite industry using electrodialysis: Optimization

Xiaomeng Wang, Ning Li, Jianye Li, Junjun Feng, Zhun Ma, Yuting Xu, Yongchao Sun, Dongmei Xu, Jian Wang, Xueli Gao, Jun Gao

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 4, doi: 10.1007/s11783-019-1132-5

Abstract: p>

RSM was utilized to optimize and model influential parameters on fluorideremoval.

Fluoride removal efficiency of 99.69% was observed

Keywords： Response surface methodology     Fluoride removal     Electrodialysis     Box-Behnken design    

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Poly(vinylidene fluoride--hexafluoro propylene) membranes prepared via thermally induced phase separation

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 5,   Pages 720-730 doi: 10.1007/s11705-021-2098-y

Abstract: and environmentally safe diluent, acetyl tributyl citrate, was employed to prepare poly(vinylidene fluoride

Keywords： poly(vinylidene fluoride)-co-hexafluoropropylene     thermally induced phase separation     non-toxic    

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Adsorption of fluoride on clay minerals and their mechanisms using X-ray photoelectron spectroscopy

Junyi DU, Daishe WU, Huayun XIAO, Ping LI

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 2,   Pages 212-226 doi: 10.1007/s11783-010-0255-5

Abstract: This research investigates the adsorption mechanisms of fluoride (F) on four clay minerals (kaolinitemontmorillonite, chlorite, and illite) under different F concentrations and reaction times by probing their fluoride

Keywords： clay mineral     fluoride (F)     adsorption mechanism     X-ray photoelectron spectroscopy (XPS)    

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Engineering a High-Selectivity PVDF Hollow-Fiber Membrane for Cesium Removal Article

Shiyuan Ding, Lilan Zhang, Yang Li, Li´an Hou

Engineering 2019, Volume 5, Issue 5,   Pages 865-871 doi: 10.1016/j.eng.2019.07.021

Abstract:

In this study, a copper ferrocyanide/silica/polyvinylidene fluoride (CuFC/SiO2/PVDF) hollow-fiberwith embedded SiO2 was used to fix the dispersion of CuFC nanoparticles for cesium (Cs) removalThe CuFC/SiO2/PVDF hollowfiber composite membrane showed a particularly superior removal performance

Keywords： Cesium removal     Composite membrane     Copper ferrocyanide     Polyvinylidene fluoride    

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Preparation and characterization of poly (vinylidene fluoride)/TiO

Weiying LI, Xiuli SUN, Chen WEN, Hui LU, Zhiwei WANG

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 4,   Pages 492-502 doi: 10.1007/s11783-012-0407-x

Abstract: Poly(vinylidene fluoride) (PVDF)/titanium dioxide (TiO ) hybrid membranes were prepared using nano-TiO

Keywords： poly(vinylidene fluoride) (PVDF) membrane     nano-TiO2     anti-fouling performance     water treatment    

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investigation of novel tetraphenylvinyl hydrazone derivatives: efficient multimodal chemosensors for fluoride

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 2061-2073 doi: 10.1007/s11705-023-2366-0

Abstract: Herein, three novel tetraphenylethylene hydrazone chemosensors TC12, SC16, and TC16 are prepared for the selective detection of F−. Two NH and one C=N units are incorporated into the sensors for better colorimetric responses, whereas the tetraphenyl unit is in charge of the aggregation-induced emission effect. Among them, compounds SC16 and TC16 form stable gels with some organic solvents. All the tetrahydrofuran/H2O solutions of the three compounds exhibit aggregation-induced emission effect, whereby the fluorescence emission increases by varying degrees with the volume of poor solvent water. Moreover, good aggregation-induced emission effects are observed in the self-assembly of SC16 and TC16. As a sample chemosensor, TC12 in tetrahydrofuran responds to F− selectively with high sensitivity, with the colorimetric and fluorometric detection limits of 8.25 × 10−7 mol·L–1 and 2.69 × 10−7 mol·L–1, respectively. The reversible gel-sol-gel phase transition and color changes indicate that both SC16-dimethyl sulfoxide and TC16-ethyl acetate gels specifically respond to F– with good sensitivity. The detection results are well supported by ultraviolet-visible spectroscopy, fluorescent spectroscopy, and 1H nuclear magnetic resonance. More importantly, the driving forces of gelation are visually clarified through the single crystal X-ray analysis of compound TOMe.

Keywords： organogelator     tetraphenylvinyldrazone     single crystal     aggregation-induced emission effect     ion sensing    

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Distribution, enrichment mechanism and risk assessment for fluoride in groundwater: a case study of Mihe-Weihe

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 6, doi: 10.1007/s11783-023-1670-8

Abstract:

● High fluorine is mainly HCO3·Cl-Na and HCO3-Na type.

Keywords： Groundwater in the Mihe-Weihe River Basin     Distribution characteristics of fluorine     Factors influencing fluoride    

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Pilot study for the treatment of sodium and fluoride-contaminated groundwater by using high-pressure

Xiaomao WANG,Hongwei YANG,Zhenyu LI,Shaoxia YANG,Yuefeng XIE

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 1,   Pages 155-163 doi: 10.1007/s11783-014-0740-3

Abstract: pilot study in treating a typical groundwater in Huaibei Plain containing excessive sodium, sulfate and fluoridemembrane fouling) demonstrated similar rejection ratios of the conductivity (~98.5%), sodium (~98.5%) and fluorideThe tight NF membrane also had a good rejection on conductivity (95%), sodium (94%) and fluoride (95%

Keywords： reverse osmosis (RO)     nanofiltration (NF)     water quality standards     sodium     fluoride     cost estimation    

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Fluoride ions adsorption from water by CaCO enhanced Mn–Fe mixed metal oxides

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 2,   Pages 236-248 doi: 10.1007/s11705-022-2193-8

Abstract: These oxides were then employed as an adsorbent for adsorptive removal of excess fluoride ions.The adsorption property of CMFC toward fluoride ion was analyzed by batch experiments.In fact, CMFC exhibited adsorption capacity of 227.3 mg∙g‒1 toward fluoride ion.When the fluoride ion concentration was increased from 20 to 200 mg∙L‒1, Langmuir model wasThe change of fluoride ion adsorption with respect to time was accurately described by pseudo-second-order

Keywords： mesoporous materials     metal oxides     fluoride ion     adsorption mechanism    

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dimensional lycopodium with hydrophobic nature and interconnected nano-channels into polyvinylidene fluoride

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 9,   Pages 1162-1182 doi: 10.1007/s11705-022-2276-6

Abstract: research, for the first time, lycopodium as a novel nanofiller was incorporated into a polyvinylidene fluoridematrix to fabricate lycopodium/polyvinylidene fluoride flat-sheet membrane for desalination applicationsThe prepared lycopodium/polyvinylidene fluoride membranes and lycopodium were characterized by fieldThe optimized lycopodium/polyvinylidene fluoride membrane exhibits superior performance compared to thedistillation experiments, using a 15000 ppm NaCl solution as a feed at 70 °C, the neat polyvinylidene fluoride

Keywords： lycopodium     hydrophobicity     vacuum membrane distillation     desalination    

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An antifouling catechol/chitosan-modified polyvinylidene fluoride membrane for sustainable oil-in-water

Shanshan Zhao, Zhu Tao, Liwei Chen, Muqiao Han, Bin Zhao, Xuelin Tian, Liang Wang, Fangang Meng

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1355-5

Abstract: oxidant-induced ultrafast co-deposition of naturally available catechol/chitosan on a porous polyvinylidene fluoride

Keywords： Antifouling     Catechol/chitosan co-deposition     Oil-in-water emulsions separation     Underwater superoleophobic    

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Preparation and application of polyvinylidene fluoride ultrafiltration membranes by non-solovent induced

Lv Xiaolong,Wu Chunrui,Zhang Hao,Zhao Lihua

Strategic Study of CAE 2014, Volume 16, Issue 12,   Pages 35-45

Abstract: Poly (vinylidene fluoride) (PVDF) has excellent chemical and mechanical properties and has been widely

Keywords： non-solvent induced phase inversion     polyvinylidene fluoride     ultrafiltration membrane     phase separation    

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Title Author Date Type Operation

Simultaneous removal of arsenate and fluoride from water by Al-Fe (hydr)oxides

Junlian QIAO, Zimin CUI, Yuankui SUN, Qinghai HU, Xiaohong GUAN

Journal Article

Removal of fluoride from water using titanium-based adsorbents

Zhijian LI, Shubo DENG, Xueying ZHANG, Wei ZHOU, Jun HUANG, Gang YU

Journal Article

Utilization of aluminum hydroxide waste generated in fluoride adsorption and coagulation processes foradsorptive removal of cadmium ion

Jiawei JU,Ruiping LIU,Zan HE,Huijuan LIU,Xiwang ZHANG,Jiuhui QU

Journal Article

Fluoride removal from secondary effluent of the graphite industry using electrodialysis: Optimization

Xiaomeng Wang, Ning Li, Jianye Li, Junjun Feng, Zhun Ma, Yuting Xu, Yongchao Sun, Dongmei Xu, Jian Wang, Xueli Gao, Jun Gao

Journal Article

Poly(vinylidene fluoride--hexafluoro propylene) membranes prepared via thermally induced phase separation

Journal Article

Adsorption of fluoride on clay minerals and their mechanisms using X-ray photoelectron spectroscopy

Junyi DU, Daishe WU, Huayun XIAO, Ping LI

Journal Article

Engineering a High-Selectivity PVDF Hollow-Fiber Membrane for Cesium Removal

Shiyuan Ding, Lilan Zhang, Yang Li, Li´an Hou

Journal Article

Preparation and characterization of poly (vinylidene fluoride)/TiO

Weiying LI, Xiuli SUN, Chen WEN, Hui LU, Zhiwei WANG

Journal Article

investigation of novel tetraphenylvinyl hydrazone derivatives: efficient multimodal chemosensors for fluoride

Journal Article

Distribution, enrichment mechanism and risk assessment for fluoride in groundwater: a case study of Mihe-Weihe

Journal Article

Pilot study for the treatment of sodium and fluoride-contaminated groundwater by using high-pressure

Xiaomao WANG,Hongwei YANG,Zhenyu LI,Shaoxia YANG,Yuefeng XIE

Journal Article

Fluoride ions adsorption from water by CaCO enhanced Mn–Fe mixed metal oxides

Journal Article

dimensional lycopodium with hydrophobic nature and interconnected nano-channels into polyvinylidene fluoride

Journal Article

An antifouling catechol/chitosan-modified polyvinylidene fluoride membrane for sustainable oil-in-water

Shanshan Zhao, Zhu Tao, Liwei Chen, Muqiao Han, Bin Zhao, Xuelin Tian, Liang Wang, Fangang Meng

Journal Article

Preparation and application of polyvinylidene fluoride ultrafiltration membranes by non-solovent induced

Lv Xiaolong,Wu Chunrui,Zhang Hao,Zhao Lihua

Journal Article