A model for the removal of Cr(VI) in water by nanoscale zero-valent iron: quantifying the reaction process and calculating the electron efficiency
Source abstract
Abstract
Nanoscale zero-valent iron (nZVI) has received more attention due to its high reactivity in removing contaminants. However, assessing reactivity requires time and cost savings to improve the potential applicability of nZVI. In this study, a model for Cr(VI) removal by nZVI was established to simulate the changes of various ions during the reaction. The aim was to elucidate the reduction mechanism and provide a new method for calculating electron efficiency. And we calibrated the parameters through experimental data and characterization analysis, which improved the reliability of the model. In addition, we discussed the specific effects of the initial concentration and initial pH of Cr(VI) on electron efficiency and reactivity. The results indicated that the initial concentration and initial pH primarily affected the electron efficiency by altering the utilization efficiency of active sites and the corrosion degree of nZVI. At pH values of 3, 5, 7, 9, and 11, the electron efficiencies were 39.18%, 47.56%, 58.81%, 59.12%, and 84.19%, respectively. We found that both nZVI and Fe(II) had reduction effects, but which one played the major role depended on the reaction conditions. Finally, the possible reaction mechanisms were analyzed by combining experiments, models, and characterizations. The whole reaction process was divided into three stages: pollutant adsorption, electron transfer process, and mass transfer process.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Environmental remediation with nanomaterials · Electrokinetic Soil Remediation Techniques · Advanced oxidation water treatment
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (58)
Show source-provided references
1. Qu J, Zhang B, Tong H, Liu Y, Wang S, Wei S, Wang L, Wang Y, Zhang Y (2023) High efficiency decontamination of Pb(II) and tetracycline in contaminated water using ball-milled magnetic bone derived biochar. J Clean Prod 385:135683. https://doi.org/10.1016/j.jclepro.2022.13568310.1016/j.jclepro.2022.135683 ↗
2. Dong H, Deng J, Xie Y, Zhang C, Jiang Z, Cheng Y, Hou K, Zeng G (2017) Stabilization of nanoscale zero-valent iron (nZVI) with modified biochar for Cr(VI) removal from aqueous solution. J Hazard Mater 332:79–86. https://doi.org/10.1016/j.jhazmat.2017.03.00210.1016/j.jhazmat.2017.03.002 ↗
3. Qu G, Kou L, Wang T, Liang D, Hu S (2017) Evaluation of activated carbon fiber supported nanoscale zero-valent iron for chromium (VI) removal from groundwater in a permeable reactive column. J Environ Manage 201:378–387. https://doi.org/10.1016/j.jenvman.2017.07.01010.1016/j.jenvman.2017.07.010 ↗
4. Wang WD, Ma HT, Lin W, Sun P, Zhang LK, Han JH (2022) Trametes suaveolens-derived biochar loaded on nanoscale zero-valent iron particles for the adsorption and reduction of Cr(VI). Int J Environ Sci Tech 19(5):4251–4264. https://doi.org/10.1007/s13762-021-03292-410.1007/s13762-021-03292-4 ↗
5. Vajpayee P, Tripathi RD, Rai UN, Ali MB, Singh SN (2000) Chromium (VI) accumulation reduces chlorophyll biosynthesis, nitrate reductase activity and protein content in Nymphaea alba L. Chemosphere 41(7):1075–1082. https://doi.org/10.1016/s0045-6535(99)00426-910.1016/s0045-6535(99)00426-9 ↗
6. Lyu H, Tang J, Huang Y, Gai L, Zeng EY, Liber K, Gong Y (2017) Removal of hexavalent chromium from aqueous solutions by a novel biochar supported nanoscale iron sulfide composite. Chem Eng J 322:516–524. https://doi.org/10.1016/j.cej.2017.04.05810.1016/j.cej.2017.04.058 ↗
7. Zhao R, Zhou Z, Zhao X, Jing G (2019) Enhanced Cr(VI) removal from simulated electroplating rinse wastewater by amino-functionalized vermiculite-supported nanoscale zero-valent iron. Chemosphere 218:458–467. https://doi.org/10.1016/j.chemosphere.2018.11.11810.1016/j.chemosphere.2018.11.118 ↗
8. Liu X, Yang L, Zhao H, Wang W (2020) Pyrolytic production of zerovalent iron nanoparticles supported on rice husk-derived biochar: simple, in situ synthesis and use for remediation of Cr(VI)-polluted soils. Sci Total Environ 708:134479. https://doi.org/10.1016/j.scitotenv.2019.13447910.1016/j.scitotenv.2019.134479 ↗
9. Qu J, Wei S, Liu Y, Zhang X, Jiang Z, Tao Y, Zhang G, Zhang B, Wang L, Zhang Y (2022) Effective lead passivation in soil by bone char/CMC-stabilized FeS composite loading with phosphate-solubilizing bacteria. J Hazard Mater 423:127043. https://doi.org/10.1016/j.jhazmat.2021.12704310.1016/j.jhazmat.2021.127043 ↗
10. Lyu H, Tang J, Cui M, Gao B, Shen B (2020) Biochar/iron (BC/Fe) composites for soil and groundwater remediation: synthesis, applications, and mechanisms. Chemosphere (Oxford) 246:125609. https://doi.org/10.1016/j.chemosphere.2019.12560910.1016/j.chemosphere.2019.125609 ↗
11. Cheng Y, Dong H, Hao T (2021) CaCO3 coated nanoscale zero-valent iron (nZVI) for the removal of chromium(VI) in aqueous solution. Sep Purif Technol 257:117967. https://doi.org/10.1016/j.seppur.2020.11796710.1016/j.seppur.2020.117967 ↗
12. Xie Y, Chen P, Liang K, Wu L, Luo S, Liu H, Xu H, Zhao Y (2021) Study on remediation and mechanism of immobilized bio-nZVI for chromium (VI) contaminated wastewater in an up-flow bioreactor. J Environ Chem Eng 9(6):106747. https://doi.org/10.1016/j.jece.2021.10674710.1016/j.jece.2021.106747 ↗
13. Yu R, Chi F, Cheng W, Chang J (2014) Application of pH, ORP, and DO monitoring to evaluate chromium(VI) removal from wastewater by the nanoscale zero-valent iron (nZVI) process. Chem Eng J 255:568–576. https://doi.org/10.1016/j.cej.2014.06.00210.1016/j.cej.2014.06.002 ↗
14. Qi Z, Liu R, Joshi TP, Peng J, Qu J (2021) Highly efficient removal of selenite by electrolysis-assisted nano-zerovalent iron (nZVI): implication for corrosion and reduction. Chem Eng J 405:126564. https://doi.org/10.1016/j.cej.2020.12656410.1016/j.cej.2020.126564 ↗
15. Shi L, Zhang X, Chen Z (2011) Removal of chromium (VI) from wastewater using bentonite-supported nanoscale zero-valent iron. Water Res 45(2):886–892. https://doi.org/10.1016/j.watres.2010.09.02510.1016/j.watres.2010.09.025 ↗
16. Hou J, Li Y, Ci H, Miao L, You G, Wu J, Xu Y (2022) Influence of aggregation and sedimentation behavior of bare and modified zero-valent-iron nanoparticles on the Cr(VI) removal under various groundwater chemistry conditions. Chemosphere 296:133905. https://doi.org/10.1016/j.chemosphere.2022.13390510.1016/j.chemosphere.2022.133905 ↗
17. Xie Y, Lu G, Tao X, Wen Z, Dang Z (2022) A collaborative strategy for elevated reduction and immobilization of Cr(VI) using nano zero valent iron assisted by schwertmannite: Removal performance and mechanism. J Hazard Mater 422:126952. https://doi.org/10.1016/j.jhazmat.2021.12695210.1016/j.jhazmat.2021.126952 ↗
18. Zhao S, Fan X, Yang J, Huang H, Xia C, Jing R, Wu M, Zhang Z, Liu A, Zhang Q, Meng Z (2020) Enhanced removal of Cr(VI) from wastewater by nanoscale zero valent iron supported on layered double hydroxides. J Porous Mat 27(6):1701–1710. https://doi.org/10.1007/s10934-020-00947-410.1007/s10934-020-00947-4 ↗
19. Li Q, Chen Z, Wang H, Yang H, Wen T, Wang S, Hu B, Wang X (2021) Removal of organic compounds by nanoscale zero-valent iron and its composites. Sci Total Environ 792:148546. https://doi.org/10.1016/j.scitotenv.2021.14854610.1016/j.scitotenv.2021.148546 ↗
20. Liu H, Wang Q, Wang C, Li X (2013) Electron efficiency of zero-valent iron for groundwater remediation and wastewater treatment. Chem Eng J 215:90–95. https://doi.org/10.1016/j.cej.2012.11.01010.1016/j.cej.2012.11.010 ↗
21. Ling J, Qiao J, Song Y, Sun Y (2019) Influence of coexisting ions on the electron efficiency of sulfidated zerovalent iron toward Se(VI) removal. Chem Eng J 378:122124. https://doi.org/10.1016/j.cej.2019.12212410.1016/j.cej.2019.122124 ↗
22. Zhou L, Li Z, Yi Y, Tsang EP, Fang Z (2022) Increasing the electron selectivity of nanoscale zero-valent iron in environmental remediation: a review. J Hazard Mater 421:126709. https://doi.org/10.1016/j.jhazmat.2021.12670910.1016/j.jhazmat.2021.126709 ↗
23. O’Carroll D, Sleep B, Krol M, Boparai H, Kocur C (2013) Nanoscale zero valent iron and bimetallic particles for contaminated site remediation. Adv Water Resour 51:104–122. https://doi.org/10.1016/j.advwatres.2012.02.00510.1016/j.advwatres.2012.02.005 ↗
24. Zhang S, Lyu H, Tang J, Song B, Zhen M, Liu X (2019) A novel biochar supported CMC stabilized nano zero-valent iron composite for hexavalent chromium removal from water. Chemosphere 217:686–694. https://doi.org/10.1016/j.chemosphere.2018.11.04010.1016/j.chemosphere.2018.11.040 ↗
25. Kumarathilaka P, Jayaweera V, Wijesekara H, Kottegoda IRM, Rosa SRD, Vithanage M (2016) Insights into starch coated nanozero valent iron-graphene composite for Cr(VI) removal from aqueous medium. J Nanomater 2016:1–10. https://doi.org/10.1155/2016/281328910.1155/2016/2813289 ↗
26. Peng Z, Xiong C, Wang W, Tan F, Xu Y, Wang X, Qiao X (2017) Facile modification of nanoscale zero-valent iron with high stability for Cr(VI) remediation. Sci Total Environ 596–597:266–273. https://doi.org/10.1016/j.scitotenv.2017.04.12110.1016/j.scitotenv.2017.04.121 ↗
27. Stefaniuk M, Oleszczuk P, Ok YS (2016) Review on nano zerovalent iron (nZVI): from synthesis to environmental applications. Chem Eng J 287:618–632. https://doi.org/10.1016/j.cej.2015.11.04610.1016/j.cej.2015.11.046 ↗
28. Qian L, Liu S, Zhang W, Chen Y, Ouyang D, Han L, Yan J, Chen M (2019) Enhanced reduction and adsorption of hexavalent chromium by palladium and silicon rich biochar supported nanoscale zero-valent iron. J Colloid Interf Sci 533:428–436. https://doi.org/10.1016/j.jcis.2018.08.07510.1016/j.jcis.2018.08.075 ↗
29. Jia Z, Shu Y, Huang R, Liu J, Liu L (2018) Enhanced reactivity of nZVI embedded into supermacroporous cryogels for highly efficient Cr(VI) and total Cr removal from aqueous solution. Chemosphere 199:232–242. https://doi.org/10.1016/j.chemosphere.2018.02.02110.1016/j.chemosphere.2018.02.021 ↗
30. Zhang Y, Liu H, Liu AR (2014) Appropriate conditions of oxidation by-product bromate removal from drinking water by nanoparticle zero-valent iron. J Environ Eng 140(9):A4013002. https://doi.org/10.1061/(ASCE)EE.1943-7870.000076410.1061/(ASCE)EE.1943-7870.0000764 ↗
31. Nagoya S, Nakamichi S, Kawase Y (2019) Mechanisms of phosphate removal from aqueous solution by zero-valent iron: a novel kinetic model for electrostatic adsorption, surface complexation and precipitation of phosphate under oxic conditions. Sep Purif Technol 218:120–129. https://doi.org/10.1016/j.seppur.2019.02.04210.1016/j.seppur.2019.02.042 ↗
32. Yoshino H, Kurosu S, Yamaguchi R, Kawase Y (2018) A phenomenological reaction kinetic model for Cu removal from aqueous solutions by zero-valent iron (ZVI). Chemosphere 200:542–553. https://doi.org/10.1016/j.chemosphere.2018.02.12710.1016/j.chemosphere.2018.02.127 ↗
33. Zhu S, Huang X, Wang D, Wang L, Ma F (2018) Enhanced hexavalent chromium removal performance and stabilization by magnetic iron nanoparticles assisted biochar in aqueous solution: Mechanisms and application potential. Chemosphere 207:50–59. https://doi.org/10.1016/j.chemosphere.2018.05.04610.1016/j.chemosphere.2018.05.046 ↗
34. Rodríguez-Maroto JM, García-Herruzo F, García-Rubio A, Gómez-Lahoz C, Vereda-Alonso C (2009) Kinetics of the chemical reduction of nitrate by zero-valent iron. Chemosphere 74(6):804–809. https://doi.org/10.1016/j.chemosphere.2008.10.02010.1016/j.chemosphere.2008.10.020 ↗
35. Yoshino H, Kawase Y (2013) Kinetic modeling and simulation of zero-valent iron wastewater treatment process: simultaneous reduction of nitrate, hydrogen peroxide, and phosphate in semiconductor acidic wastewater. Ind Eng Chem Res 52(50):17829–17840. https://doi.org/10.1021/ie402797j10.1021/ie402797j ↗
36. Villen-Guzman M, Paz-Garcia JM, Arhoun B, Cerrillo-Gonzalez MDM, Rodriguez-Maroto JM, Vereda-Alonso C, Gomez-Lahoz C (2020) Chemical reduction of nitrate by zero-valent iron: shrinking-core versus surface kinetics models. Int J Env Res Pub Health 17(4):1241. https://doi.org/10.3390/ijerph1704124110.3390/ijerph17041241 ↗
37. Li J, Zhang X, Liu M, Pan B, Zhang W, Shi Z, Guan X (2018) Enhanced reactivity and electron selectivity of sulfidated zerovalent iron toward chromate under aerobic conditions. Environ Sci Technol 52(5):2988–2997. https://doi.org/10.1021/acs.est.7b0650210.1021/acs.est.7b06502 ↗
38. Li X, Ai L, Jiang J (2016) Nanoscale zerovalent iron decorated on graphene nanosheets for Cr(VI) removal from aqueous solution: surface corrosion retard induced the enhanced performance. Chem Eng J 288:789–797. https://doi.org/10.1016/j.cej.2015.12.02210.1016/j.cej.2015.12.022 ↗
39. Diao Z, Xu X, Jiang D, Kong L, Sun Y, Hu Y, Hao Q, Chen H (2016) Bentonite-supported nanoscale zero-valent iron/persulfate system for the simultaneous removal of Cr(VI) and phenol from aqueous solutions. Chem Eng J 302:213–222. https://doi.org/10.1016/j.cej.2016.05.06210.1016/j.cej.2016.05.062 ↗
40. Huang L, Zhou S, Jin F, Huang J, Bao N (2014) Characterization and mechanism analysis of activated carbon fiber felt-stabilized nanoscale zero-valent iron for the removal of Cr(VI) from aqueous solution. Colloids Surf, A 447:59–66. https://doi.org/10.1016/j.colsurfa.2014.01.03710.1016/j.colsurfa.2014.01.037 ↗
41. Zhuang M, Wang H, Qi L, Cui L, Quan G, Yan J (2021) Production of activated biochar via a self-blowing strategy-supported sulfidated nanoscale zerovalent iron with enhanced reactivity and stability for Cr(VI) reduction. J Clean Prod 315:128108. https://doi.org/10.1016/j.jclepro.2021.12810810.1016/j.jclepro.2021.128108 ↗
42. Meng F, Li Z, Lei C, Yang K, Lin D (2021) Removal of trichloroethene by iron-based biochar from anaerobic water: Key roles of Fe/C ratio and iron carbides. Chem Eng J 413:127391. https://doi.org/10.1016/j.cej.2020.12739110.1016/j.cej.2020.127391 ↗
43. Zhou N, Gong K, Hu Q, Cheng X, Zhou J, Dong M, Wang N, Ding T, Qiu B, Guo Z (2020) Optimizing nanocarbon shell in zero-valent iron nanoparticles for improved electron utilization in Cr(VI) reduction. Chemosphere 242:125235. https://doi.org/10.1016/j.chemosphere.2019.12523510.1016/j.chemosphere.2019.125235 ↗
44. Yuan Y, Wei X, Yin H, Zhu M, Luo H, Dang Z (2022) Synergistic removal of Cr(VI) by S-nZVI and organic acids: the enhanced electron selectivity and pH-dependent promotion mechanisms. J Hazard Mater 423:127240. https://doi.org/10.1016/j.jhazmat.2021.12724010.1016/j.jhazmat.2021.127240 ↗
45. Yu Q, Guo J, Muhammad Y, Li Q, Lu Z, Yun J, Liang Y (2020) Mechanisms of enhanced hexavalent chromium removal from groundwater by sodium carboxymethyl cellulose stabilized zerovalent iron nanoparticles. J Environ Manage 276:111245. https://doi.org/10.1016/j.jenvman.2020.11124510.1016/j.jenvman.2020.111245 ↗
46. Li Y, Li J, Zhang Y (2012) Mechanism insights into enhanced Cr(VI) removal using nanoscale zerovalent iron supported on the pillared bentonite by macroscopic and spectroscopic studies. J Hazard Mater 227–228:211–218. https://doi.org/10.1016/j.jhazmat.2012.05.03410.1016/j.jhazmat.2012.05.034 ↗
47. Bae S, Hanna K (2015) Reactivity of nanoscale zero-valent iron in unbuffered systems: effect of pH and Fe(II) dissolution. Environ Sci Technol 49(17):10536–10543. https://doi.org/10.1021/acs.est.5b0129810.1021/acs.est.5b01298 ↗
48. Chen X, Fan G, Li H, Li Y, Zhang R, Huang Y, Xu X (2022) Nanoscale zero-valent iron particles supported on sludge-based biochar for the removal of chromium (VI) from aqueous system. Environ Sci Pollut Res 29(3):3853–3863. https://doi.org/10.1007/s11356-021-15969-x10.1007/s11356-021-15969-x ↗
49. Fu F, Ma J, Xie L, Tang B, Han W, Lin S (2013) Chromium removal using resin supported nanoscale zero-valent iron. J Environ Manage 128:822–827. https://doi.org/10.1016/j.jenvman.2013.06.04410.1016/j.jenvman.2013.06.044 ↗
50. Mortazavian S, An H, Chun D, Moon J (2018) Activated carbon impregnated by zero-valent iron nanoparticles (AC/nZVI) optimized for simultaneous adsorption and reduction of aqueous hexavalent chromium: material characterizations and kinetic studies. Chem Eng J 353:781–795. https://doi.org/10.1016/j.cej.2018.07.17010.1016/j.cej.2018.07.170 ↗
51. Li Y, Huang S, Song Y, Zhang X, Liu S, Du Q (2022) Effect of spatial distribution of nZVI on the corrosion of nZVI composites and its subsequent Cr(VI) removal from water. Nanomaterials-Basel 12(3):494. https://doi.org/10.3390/nano1203049410.3390/nano12030494 ↗
52. Wen J, Fu W, Ding S, Zhang Y, Wang W (2022) Pyrogallic acid modified nanoscale zero-valent iron efficiently removed Cr(VI) by improving adsorption and electron selectivity. Chem Eng J 443:136510. https://doi.org/10.1016/j.cej.2022.13651010.1016/j.cej.2022.136510 ↗
53. Mangayayam MC, Perez JPH, Dideriksen K, Freeman HM, Bovet N, Benning LG, Tobler DJ (2019) Structural transformation of sulfidized zerovalent iron and its impact on long-term reactivity. Environ Sci Nano 6(11):3422–3430. https://doi.org/10.1039/C9EN00876D10.1039/C9EN00876D ↗
54. Giri RKV, Raju LS, Nancharaiah YV, Pulimi M, Chandrasekaran N, Mukherjee A (2019) Anaerobic nano zero-valent iron granules for hexavalent chromium removal from aqueous solution. Environ Technol Innov 16:100495. https://doi.org/10.1016/j.eti.2019.10049510.1016/j.eti.2019.100495 ↗
55. Qiao J, Song Y, Sun Y, Guan X (2018) Effect of solution chemistry on the reactivity and electron selectivity of zerovalent iron toward Se(VI) removal. Chem Eng J 353:246–253. https://doi.org/10.1016/j.cej.2018.07.11310.1016/j.cej.2018.07.113 ↗
56. Zhang Y, Jiang H, Zhang Y, Xie J (2013) The dispersity-dependent interaction between montmorillonite supported nZVI and Cr(VI) in aqueous solution. Chem Eng J 229:412–419. https://doi.org/10.1016/j.cej.2013.06.03110.1016/j.cej.2013.06.031 ↗
57. Zhang W, Qian L, Ouyang D, Chen Y, Han L, Chen M (2019) Effective removal of Cr(VI) by attapulgite-supported nanoscale zero-valent iron from aqueous solution: enhanced adsorption and crystallization. Chemosphere 221:683–692. https://doi.org/10.1016/j.chemosphere.2019.01.07010.1016/j.chemosphere.2019.01.070 ↗
58. Gao Y, Yang X, Lu X, Li M, Wang L, Wang Y (2022) Kinetics and mechanisms of Cr(VI) removal by nZVI: influencing parameters and modification. Catalysts 12(9):999. https://doi.org/10.3390/catal1209099910.3390/catal12090999 ↗