Modeling of azo dyes adsorption on magnetic NiFe 2 O 4 /RGO nanocomposite using response surface methodology.

التفاصيل البيبلوغرافية
العنوان:	Modeling of azo dyes adsorption on magnetic NiFe 2 O 4 /RGO nanocomposite using response surface methodology.
المؤلفون:	Bazgir A; 1Student of School of Health, Guilan University of Medical Sciences, Rasht, Iran., Khorshidi A; 2Department of Chemistry, Faculty of Sciences, University of Guilan, P.O. Box 41335-1914, Rasht, Guilan Iran., Kamani H; 3Health Promotion Research Center, Zahedan University of Medical Sciences, Zahedan, Iran., Ashrafi SD; 4Research Center of Health and Environment, Guilan University of Medical Sciences, Rasht, Iran.; 5Department of Environmental Health Engineering, School of Health, Guilan University of Medical Sciences, Rasht, Iran., Naghipour D; 5Department of Environmental Health Engineering, School of Health, Guilan University of Medical Sciences, Rasht, Iran.
المصدر:	Journal of environmental health science & engineering [J Environ Health Sci Eng] 2019 Dec 05; Vol. 17 (2), pp. 931-947. Date of Electronic Publication: 2019 Dec 05 (Print Publication: 2019).
نوع المنشور:	Journal Article
اللغة:	English
بيانات الدورية:	Publisher: Springer Country of Publication: England NLM ID: 101613643 Publication Model: eCollection Cited Medium: Print ISSN: 2052-336X (Print) NLM ISO Abbreviation: J Environ Health Sci Eng Subsets: PubMed not MEDLINE
أسماء مطبوعة:	Publication: 2018- : [London] : Springer Original Publication: [London] : BioMed Central, c2013-
مستخلص:	Background: Azo group dyes are the largest group of synthetics dyes that widely used in industries, especially in textile industry. The presence of these organic compounds in wastewaters and their discharge into environment without efficient treatment may cause adverse effect on human, living and aquatic environment. The purpose of this study was to optimize the adsorption of azo dye of Direct Red 81 (anionic dye) and Basic Blue 41 (cationic dye) from aqueous solution onto magnetic NiFe 2 O 4 /RGO nanocomposite. Methods: In this study the response surface methodology (RSM) based on the central composite design (CCD), was used to optimization and modeling of adsorption process DR81 and BB41 dye on NiFe 2 O 4 /RGO. in order to investigating the effect of the operating parameters on the adsorption efficiency DR81 and BB41, four influential factors were chosen that includes of pH (3-9), contact time (5-25 min), adsorbent amount (0.02-0.05 g) and initial dye concentration (40-200 mg/L). A total of 30 experiments were performed for each dye in this study. The concentration of dye in solution was measured by spectrophotometer. The structure of synthesized adsorbent was investigated using Scanning Electron Microscope (SEM), X-ray diffraction (XRD), Fourier transform irradiation (FTIR), transmission electron microscope (TEM) and vibrating sample magnetometer (VSM). Results: Analysis of variance (ANOVA) showed that regression model for both dye adsorption with value of P value <0.001 is significant statistically. The correlation coefficient (R ² ) for DR81 (R ² = 0.9968) and BB41 (R ² = 0.9948) indicated which there is a good agreement between predicted values and the results of the experiments and the model also well predict the adsorption efficiency. Furthermore, the factors of pH, dye concentration and adsorbent dose, have the greatest effect on adsorption, respectively, while contact time have the lowest effect on adsorption of both dyes. The adsorption behavior of the DR81 and BB41 onto NiFe 2 O 4 /RGO was best described by the Langmuir and Freundlich isotherm, respectively. The optimum conditions for maximum removal of DR81 (96.41%) was found to be at pH 3, contact time 19.68 min, adsorbent dose 0.02 g and initial dye concentration 40 mg/L. However, the optimum conditions for maximum removal of BB41 (97.87%) was found to be at pH 9 contact time 18.16 min, adsorbent dose 0.02 g and initial dye concentration 40 mg/L. Conclusion: The present study shows that magnetic NiFe 2 O 4 /RGO nanocomposite have much potential as a powerful adsorbent for the rapid adsorption of anionic (DR81) and cationic dyes (BB41) from aqueous solution. Competing Interests: Conflict of interestThe authors declare that they have no conflict of interest. (© Springer Nature Switzerland AG 2019.)
References:	Spectrochim Acta A Mol Biomol Spectrosc. 2016 Jan 5;152:233-40. (PMID: 26218918) J Colloid Interface Sci. 2018 Jul 1;521:150-159. (PMID: 29567603) Data Brief. 2018 May 16;19:437-443. (PMID: 29900339) Mater Sci Eng C Mater Biol Appl. 2015;52:82-9. (PMID: 25953543) Ultrason Sonochem. 2018 Mar;41:267-278. (PMID: 29137751) ACS Nano. 2010 Aug 24;4(8):4806-14. (PMID: 20731455) Data Brief. 2018 Mar 08;18:80-86. (PMID: 29896495) Spectrochim Acta A Mol Biomol Spectrosc. 2017 Jan 15;171:268-279. (PMID: 27541799) Environ Sci Pollut Res Int. 2016 Aug;23(16):16396-405. (PMID: 27164876) Spectrochim Acta A Mol Biomol Spectrosc. 2014 Mar 25;122:223-31. (PMID: 24326258) J Environ Health Sci Eng. 2014 Jan 06;12(1):6. (PMID: 24393474) Dalton Trans. 2013 Oct 1;42(41):14710-7. (PMID: 23743481) J Phys Chem A. 2017 Aug 3;121(30):5614-5624. (PMID: 28691495) J Colloid Interface Sci. 2017 Dec 15;508:313-322. (PMID: 28843109) J Environ Manage. 2017 Jun 15;195(Pt 2):166-173. (PMID: 27397840)
فهرسة مساهمة:	Keywords: Adsorption; Azo dyes; Basic blue 41; Direct red 81; NiFe2O4/RGO; Response surface methodology
تواريخ الأحداث:	Date Created: 20200208 Latest Revision: 20220412
رمز التحديث:	20221213
مُعرف محوري في PubMed:	PMC6985353
DOI:	10.1007/s40201-019-00409-3
PMID:	32030164
قاعدة البيانات:	MEDLINE

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الوصف
تدمد:	2052-336X
DOI:	10.1007/s40201-019-00409-3