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Cr(VI) 8

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chromium 2

hexavalent chromium 2

kinetics 2

thermodynamics 2

3D mesoporous silica 1

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Eupatorium adenophorum 1

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Concurrent adsorption and reduction of chromium(VI) to chromium(III) using nitrogen-doped porous carbon

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 5, doi: 10.1007/s11783-021-1491-6

Abstract:

• A high-efficiency N-doped porous carbon adsorbent for Cr(VI) was synthesized

Keywords： Chromium(VI)     Nitrogen-doped porous carbon     Adsorption     Reduction     Loofah sponge    

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The biosorption of Cr(VI) ions by dried biomass obtained from a chromium-resistant bacterium

Paul Fabrice NGUEMA,Zejiao LUO,Jingjing LIAN

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 4,   Pages 454-464 doi: 10.1007/s11705-014-1456-4

Abstract: However, there is little data on the biosorption mechanism of Cr(VI) by dried biomass.So the bio-removal of Cr(VI) ions from aqueous solutions was investigated using dried biomass from achromium-resistant bacterium.biosorption process was found to be highly pH dependent and the optimum pH for the adsorption of Cr(VI

Keywords： Cr(VI)     biomass     Bacillus cereus Pf-1     biosorption capacity     biosorbents    

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Hyperbranched magnetic polymer: highly efficient removal of Cr(VI) and application in electroplating

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1568-1580 doi: 10.1007/s11705-023-2303-2

Abstract: polymer (TTCA/THT@Fe3O4) was synthesized to achieve the efficient removal of Cr(VIadsorption conditions, the maximum adsorption capacity of TTCA/THT@Fe3O4 for Cr(VIFor actual wastewater containing Cr(VI), the Cr(VI) concentration was reduced from 25.8 to 0.4 mg∙LVI) on TTCA/THT@Fe3O4 was) and total chromium in water.

Keywords： magnetic polymer     chromium removal     hydrogen bonding     recyclability     actual wastewater    

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Effects of phosphorus concentration on Cr(VI) sorption onto phosphorus-rich sludge biochar

DING Wenchuan,PENG Wenlong,ZENG Xiaolan,TIAN Xiumei

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 3,   Pages 379-385 doi: 10.1007/s11783-013-0606-0

Abstract: To investigate effects of phosphorus content on Cr(VI) sorption onto phosphorus-rich biochar, sewageBiochar produced from sludge with phosphorus concentration of 20 mg·g gave the largest chromium sorptionThe chromium loaded biochar was analyzed using Fourier Transform Infrared Spectroscopy and X-ray Diffractionindicated that chemical functional groups hydroxyl and methyl on surface of biochar were involved in Cr(VIIt also could react with Cr(III) on the biochar surface that impacted on capacity of Cr(VI) removal from

Keywords： phosphorus     biochar     sewage sludge     hexavalent chromium     adsorption    

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Na-P1 from coal fly ash produced by gasification and its application as adsorbent for removal of Cr(VI

Yixin Zhang, Lu Zhou, Liqing Chen, Yang Guo, Fanhui Guo, Jianjun Wu, Baiqian Dai

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 3,   Pages 518-527 doi: 10.1007/s11705-020-1926-9

Abstract: When the synthesized zeolite with the highest CEC (275.5 meq/100 g) was used for the adsorption of Cr(VI) from aqueous solution, the maximum adsorption capacity for Cr(VI) was found to be 17.924 mg/g.The effects of pH, contact time and initial concentration on the adsorption of Cr(VI) were also investigated

Keywords： coal fly ash     gasification     zeolite     Na-P1     chromium(VI)    

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Dual-functional sites for synergistic adsorption of Cr(VI) and Sb(V) by polyaniline-TiO hydrate: Adsorption

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 8, doi: 10.1007/s11783-022-1526-7

Abstract:

• PANI/Ti(OH)n(4–n)+ exhibited excellent adsorption capacity and reusability.

Keywords： Polyaniline/TiO2     Chromium     Antimony     Adsorption     Desorption     Mechanism    

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In situ synthesis of FeS/Carbon fibers for the effective removal of Cr(VI) in aqueous solution

Rongrong Zhang, Daohao Li, Jin Sun, Yuqian Cui, Yuanyuan Sun

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 4, doi: 10.1007/s11783-020-1247-8

Abstract: The obtained FeS/carbon fibers were used to control a Cr(VI) polluted solution, and exhibited a relatively

Keywords： Carrageenan     FeS     Double-helix structure     Hexavalent chromium    

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Biogenic palladium prepared by activated sludge microbes for the hexavalent chromium catalytic reduction

Luman Zhou, Chengyang Wu, Yuwei Xie, Siqing Xia

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 2, doi: 10.1007/s11783-019-1206-4

Abstract: . • When the biomass/Pd add to 6, the catalytic reduction rate of Cr(VI) reaches stable.enzymatic recovery by microbes of activated sludge at various biomass/Pd, and further used for the Cr(VIIn the Cr(VI) reduction experiments, Cr(VI) was first adsorbed on bio-Pd with hydrogen and then reducedWhen the biomass/Pd (w/w) ratio increased to six or higher, Cr(VI) reduction achieved maximum rate that50 mg/L of Cr(VI) could be rapidly reduced in one minute.

Keywords： Palladium nanoparticles     Activated sludge     Hexavalent chromium    

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Stabilization of hexavalent chromium with pretreatment and high temperature sintering in highly contaminated

Haiyan Mou, Wenchao Liu, Lili Zhao, Wenqing Chen, Tianqi Ao

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1353-7

Abstract: (Cr(VI)) in highly contaminated soil.The soil samples had an initial total Cr leaching of 1768.83 mg/L, and Cr(VI) leaching of 1745.13 mg/This combined treatment greatly improved the stabilization efficiency of chromium because the reductionof Cr(VI) into Cr(III) decreased the mobility of chromium and made it more easily encapsulated in mineralsat 1000°C, possibly because the soil did not fully fuse and because Cr(VI) does not bind with soil as

Keywords： Chromium     Heavy contaminated soil     Reduction     Sintering     Stabilization     Speciation    

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Enhanced electrokinetic remediation of chromium-contaminated soil using approaching anodes

Shucai LI, Tingting LI, Gang LI, Fengmei LI, Shuhai GUO

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 6,   Pages 869-874 doi: 10.1007/s11783-012-0437-4

Abstract: As a new technology used for the cleaning of chromium-contaminated soil, worldwide interest in eletrokineticHowever, owing to the fact that chromium exists as both cationic and anionic species in the soil, itTwo bench-scale experiments to remove chromium from contaminated soil were performed, one using a fixedAfter remediation, soil pH, total chromium, and fractionation of chromium in the soil were determinedThe average removal efficiency of total chromium was 11.32% and 18.96% in the FA and AAs experiments,

Keywords： approaching anodes     chromium-contaminated soil     electrokinetics     chromium fractionation    

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Magnetic KIT-6 nano-composite and its amino derivatives as convenient adsorbent for U(VI) sequestration

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 2037-2049 doi: 10.1007/s11705-023-2358-0

Abstract: The prepared materials exhibited excellent properties for U(VI) ions removal from aqueous solutions underThe experimental data show that the U(VI) adsorption features fast adsorption kinetics, high adsorptioncapacity and ideal selectivity toward U(VI).pristine KIT-6, the introduction of magnetism does not reduce the efficiency of the material to remove U(VI

Keywords： magnetic nanoparticle     3D mesoporous silica     amino functionalization     adsorption of U(VI)     acid resistance    

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Decontamination of Cr(VI) facilitated formation of persistent free radicals on rice husk derived biochar

Kaikai Zhang, Peng Sun, Yanrong Zhang

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 2, doi: 10.1007/s11783-019-1106-7

Abstract:

PFRs were produced on biochar during Cr(VI) decontamination.listitem>

PFRs formation on biochar was owing to the oxidization of phenolic-OH by Cr(VIlistitem>

Biochar charred at high temperature possessed great performance to Cr(VI

Keywords： Biochar     Persistent free radicals     Phenolic hydroxyl groups     Cr(VI) reduction    

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Effects of irradiation on chromium’s behavior in ferritic/martensitic FeCr alloy

Xinfu HE, Wen YANG, Zhehao QU, Sheng FAN

Frontiers in Energy 2009, Volume 3, Issue 2,   Pages 181-183 doi: 10.1007/s11708-009-0025-x

Abstract: The effects of irradiation on chromium performance under different temperatures in Fe-20at%Cr were modeledChromium precipitation was observed in FeCr alloy after irradiation; interstitial Chromium atoms arethe preferred formation of mixed Fe-Cr dumbbells in the direction of<110>and<111>; interstitial chromium

Keywords： irradiation     Fe-20at%Cr alloy     chromium segregation    

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Electroreduction of hexavalent chromium using a porous titanium flow-through electrode and intelligent

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 8, doi: 10.1007/s11783-023-1697-x

Abstract:

● Titanium-based flow-through electrode achieved high Cr(VI) reduction

Keywords： Flow-through electrode     Hexavalent chromium     Heavy metals     Neural network     Artificial intelligence    

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Hexavalent chromium in drinking water: Chemistry, challenges and future outlook on Sn(II)- and photocatalyst-based

Haizhou Liu, Xuejun Yu

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 5, doi: 10.1007/s11783-020-1267-4

Abstract: Chromium (Cr) typically exists in either trivalent and hexavalent oxidation states in drinking water,i.e., Cr(III) and Cr(VI), with Cr(VI) of particular concern in recent years due to its high toxicityreaction relevant to the fate of Cr(VI) in drinking water, and critically reviewed emerging Cr(VI) treatmentsources, mainly due to naturally weathering of chromium-containing aquifers.and inadvertent re-generation of Cr(VI) after treatment.

Keywords： Chromium     Chemistry     Treatment     Future outlook    

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Title Author Date Type Operation

Concurrent adsorption and reduction of chromium(VI) to chromium(III) using nitrogen-doped porous carbon

Journal Article

The biosorption of Cr(VI) ions by dried biomass obtained from a chromium-resistant bacterium

Paul Fabrice NGUEMA,Zejiao LUO,Jingjing LIAN

Journal Article

Hyperbranched magnetic polymer: highly efficient removal of Cr(VI) and application in electroplating

Journal Article

Effects of phosphorus concentration on Cr(VI) sorption onto phosphorus-rich sludge biochar

DING Wenchuan,PENG Wenlong,ZENG Xiaolan,TIAN Xiumei

Journal Article

Na-P1 from coal fly ash produced by gasification and its application as adsorbent for removal of Cr(VI

Yixin Zhang, Lu Zhou, Liqing Chen, Yang Guo, Fanhui Guo, Jianjun Wu, Baiqian Dai

Journal Article

Dual-functional sites for synergistic adsorption of Cr(VI) and Sb(V) by polyaniline-TiO hydrate: Adsorption

Journal Article

In situ synthesis of FeS/Carbon fibers for the effective removal of Cr(VI) in aqueous solution

Rongrong Zhang, Daohao Li, Jin Sun, Yuqian Cui, Yuanyuan Sun

Journal Article

Biogenic palladium prepared by activated sludge microbes for the hexavalent chromium catalytic reduction

Luman Zhou, Chengyang Wu, Yuwei Xie, Siqing Xia

Journal Article

Stabilization of hexavalent chromium with pretreatment and high temperature sintering in highly contaminated

Haiyan Mou, Wenchao Liu, Lili Zhao, Wenqing Chen, Tianqi Ao

Journal Article

Enhanced electrokinetic remediation of chromium-contaminated soil using approaching anodes

Shucai LI, Tingting LI, Gang LI, Fengmei LI, Shuhai GUO

Journal Article

Magnetic KIT-6 nano-composite and its amino derivatives as convenient adsorbent for U(VI) sequestration

Journal Article

Decontamination of Cr(VI) facilitated formation of persistent free radicals on rice husk derived biochar

Kaikai Zhang, Peng Sun, Yanrong Zhang

Journal Article

Effects of irradiation on chromium’s behavior in ferritic/martensitic FeCr alloy

Xinfu HE, Wen YANG, Zhehao QU, Sheng FAN

Journal Article

Electroreduction of hexavalent chromium using a porous titanium flow-through electrode and intelligent

Journal Article

Hexavalent chromium in drinking water: Chemistry, challenges and future outlook on Sn(II)- and photocatalyst-based

Haizhou Liu, Xuejun Yu

Journal Article