000 03112naa2a2200397 4500
001 575615
005 20231030032410.0
035 _a(RuTPU)RU\TPU\prd\274469
035 _aRU\TPU\prd\274468
090 _a575615
100 _a20171017a2017 k y0rusy50 ba
101 0 _aeng
102 _aRU
135 _adrcn ---uucaa
200 1 _aSynthesis and characterization of novel activated carbon from Medlar seed for chromium removal: Experimental analysis and modeling with artificial neural network and support vector regression
_bElectronic resource
_fM. Solgi [et al.]
203 _aText
_celectronic
300 _aTitle screen
320 _a[References: p. 247-248 (49 tit.)]
330 _aIn this study, for the first time the activated carbon has been produced from medlar seed (Mespilus germanica) via chemical activation with KOH. The carbonization process was carried out at different temperatures of 450, 550, 650 and 750 °C. The Nitrogen adsorption-desorption, Fourier transform infrared spectroscopy (FTIR) and Field Emission Scanning Electron Microscope (FESEM) analyses were carried out on the adsorbents. The effect of operating parameters, such as pH, initial concentration of Cr(VI), adsorbent dosage and contact time were investigated. The experimental data showed better agreement with the Langmuir model and the maximum adsorption capacity was evaluated to be 200 mg/g. Kinetic studies indicated that the adsorption process follows the pseudo second-order model and the chemical reaction is the rate-limiting step. Thermodynamic parameters showed that the adsorption process could be considered a spontaneous (G < 0), endothermic (H > 0) process which leads to an increase in entropy (S > 0). The application of support vector machine combined with genetic algorithm (SVM-GA) and artificial neural network (ANN) was investigated to predict the percentage of chromium removal from aqueous solution using synthesized activated carbon. The comparison of correlation coefficient (R2) related to ANN and the SVR-GA models with experimental data proved that both models were able to predict the percentage of chromium removal, by synthetic activated carbon while the SVR-GA model prediction was more accurate.
461 1 _0(RuTPU)RU\TPU\prd\247369
_x2405-6537
_tResource-Efficient Technologies
_oelectronic scientific journal
_fNational Research Tomsk Polytechnic University (TPU)
_d2015-
463 1 _0(RuTPU)RU\TPU\prd\274446
_tVol. 3, iss. 3
_v[P. 236-248]
_d2017
610 1 _aтруды учёных ТПУ
610 1 _aэлектронный ресурс
610 1 _aactivated carbon
610 1 _aartificial neural networks
610 1 _aактивированный уголь
610 1 _aискусственные нейронные сети
610 1 _aрегрессия
701 1 _aSolgi
_bM.
_gMostafa
701 1 _aTahereh
_bN.
_gNajibb
701 1 _aAhmadnejadc
_bS.
_gShahyar
701 1 _aNasernejadb
_bB.
_gBahram
801 1 _aRU
_b63413507
_c20090623
_gPSBO
801 2 _aRU
_b63413507
_c20180831
_gPSBO
856 4 _uhttp://earchive.tpu.ru/handle/11683/50298
942 _cBK