Removal of Chromium (VI) from Aqueous Solution Using Electro-Fenton Process
Tóm tắt
Chromium (Cr) is considered to be mutagenic and carcinogenic, and is one of the most important pollutants that have been widely used in various industrial applications. Due to its adverse health impacts, Cr must be removed from effluents before being released into the water environments. The objective of the present study was to investigate the effect of electro-Fenton process (EFP) using iron electrodes in presence of sodium sulfate salt on the elimination of Cr(VI) from aqueous solution. The effect of various parameters such as pH, voltage, initial Cr(VI) concentration, hydrogen peroxide dosage and cyanide concentration (as interference ion), on the process efficiency of Cr(VI) removal have also been tested. The results indicate that the optimum pH, voltage and hydrogen peroxide dosage in EFP were determined to be 3, 30 V and 50 mL/L, respectively. The results of this research also demonstrated that EFP efficiency decreased with increasing initial Cr(VI) concentration. Moreover, EFP efficiency Cr(VI) removal decreased with increasing cyanide concentration; accordingly, the cyanide acts as interference ion in EFP and can reduce the removal efficiency of Cr(VI). According to the obtained results, the maximum removal efficiency of Cr(VI) at optimum condition was 97 % after 25 min. These findings suggest that EFP is suitable option for removing Cr(VI) from aqueous solution.
Tài liệu tham khảo
Anota J, Lu MC, Chewpreech P (2006) Kinetics of aniline degradation by Fenton and Electro-Fenton processes. Water Res 40:1841–1847
Asgari G, Seid Mohammadi AM, Poormohammadi A, Ahmadian M (2014) Removal of cyanide from aqueous solution by adsorption onto bone charcoal. Fresenius Environ Bull 23(3):720–727
Baral SS, Das SN, Rath P (2006) Hexavalent chromium removal from aqueous solution by adsorption on treated sawdust. Biochem Eng J 31(3):216–222
Bernardo-Bricker AR, Singh SK, Trovó AG, Tang WZ, Tachiev G (2014) Biodegradability enhancement of mature landfill leachate using Fenton process under different COD loading factors. Environ Process 1(3):207–219
Di ZC, Ding J, Peng XJ, Li YH, Luan ZK, Liang J (2006) Chromium adsorption by aligned carbon nanotubes supported ceria nanoparticles. Chemosphere 62:861–865
Gao P, Chen X, Shen F, Chen G (2005) Removal of chromium (VI) from wastewater by combined electrocoagulation–electroflotation without a filter. Sep Purif Technol 43:117–123
Ghosh UC, Dasgupta M, Debnath S, Bhat SC (2003) Studies on management of chromium (VI)-contaminated industrial waste effluent using hydrous titanium oxide (HTO). Water Air Soil Pollut 143:245–256
Hasan SH, Singh KK, Prakash O, Talat M, Ho YS (2008) Removal of Cr(VI) from aqueous solutions using agricultural waste maize bran. J Hazard Mater 152:356–365
Hu J, Wang SW, Shao DD, Dong YH, Li JX, Wang XK (2009) Adsorption and reduction of chromium (VI) from aqueous solution by multi-walled carbon nanotubes. Open Environ Pollut Toxicol J 1:66–73
Jiang L, Mao X (2012) Degradation of phenol-containing wastewater using an improved Electro-Fenton process. Int J Electrochem Sci 7:4078–4088
Khazaei I, Aliabadi M, Hamed Mosavian HT (2011) Use of agricultural waste for removal of Cr(VI) from aqueous solution. Iran J Chem Eng 8(4):11–23
Krishna D, Siva Krishna K (2013) Removal of chromium from aqueous solution by borasus flabellifer coir powder as adsorbent. Elixir Chem Engg 56:13308–13317
Malakootian M, Fatehizadeh A, Yousefi N, Ahmadian M, Moosazadeh M (2011) Fluoride removal using regenerated spent bleaching earth (RSBE) from groundwater: case study on kuhbonan water. Desalination 277:244–249
Pazos M, Branco M, Neves IC, Sanromán MA, Tavares T (2010) Removal of Cr(VI) from aqueous solutions by a bacterial biofilm supported on zeolite: optimisation of the operational conditions and scale-up of the bioreactor. Chem Eng Technol 33(12)
Priambodo R, Shih YJ, Huang YJ, Huang YH (2011) Treatment of real wastewater using semi batch (Photo)-Electro-Fenton method. Sustain Environ Res 21(6):389–393
Rafati L, Mahvi AH, Asgari AR, Hosseini SS (2010) Removal of chromium (VI) from aqueous solutions using Lewatit FO36 Nano ion exchange resin. Int J Environ Sci Technol 7(1):147–156
Romero-González J, Peralta-Videa JR, Rodrı´guez E, Delgado M, Gardea-Torresde JL (2006) Potential of Agave lechuguilla biomass for Cr(III) removal from aqueous solutions: Thermodynamic studies. Bioresour Technol 97:178–182
Samarghandi MR, Ahmadian M, Mehralipur J, Shabanlo A, Poormohammadi A (2014) Studies on removal of cyanide from aqueous environments using aluminum electrodes. Fresenius Environ Bull 23(2a):613–619
Seid-Mohammadi AM, Asgari G, Samadi MT, Ahmadian M, Poormohammadi A (2014) Removal of humic acid from synthetic water using chitosan as coagulant aid in electrocoagulation process for Al and Fe electrodes. Res J Chem Environ 18(5):19–25
Souza KR, Silva DR, Mata W, Martínez-Huitle CA, Mata ALML (2012) Electrochemical technology for removing heavy metals present in synthetic produced water. Lat Am Appl Res 42:141–147
Xue SW, Yin Z, Yu J, Cheng (2008) The removal of basic dyes from aqueous solutions using agricultural by-products. J Hazard Mater 157(19):374–385
Zarei M, Niaei A, Salari D, Khataee AR (2010) Removal of four dyes from aqueous medium by the peroxi-coagulation method using carbon nanotube–PTFE cathode and neural network modeling. J Electroanal Chem 639:167–174
Zarei M, Khataee A, Fathinia M, Seyyednajafi F, Ranjbar H (2012) Combination of nanophotocatalysis with electro-Fenton-like process in the removal of phenol from aqueous solution: GC analysis and response surface approach. Int J Ind Chem 3(27):2–11
Zhang H, Zhang DB, Zhou JY (2006) Removal of COD from landfill leachate by electro-Fenton method. J Hazard Mater 135(1–3):106–111