Response surface analysis of photocatalytic degradation of methyl tert-butyl ether by core/shell Fe3O4/ZnO nanoparticles

Safari, Mojtaba; Rostami, Mostafa; Alizadeh, Mehriana; Alizadehbirjandi, Atefeh; Nakhli, Seyyed Ali Akbar; Aminzadeh, Reza

doi:10.1186/2052-336x-12-1

Cited by 176 publications

(47 citation statements)

References 24 publications

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“…Acetic acid and glycerol were formed during ethanol fermentation as observed in this study; however, they were detected at low amount, which were comparable to other studies 68, 69, 70. In this study, SSJ supplemented only with (NH 4 ) 2 SO 4 was directly used by S. cerevisiae KKU-VN8 to produce ethanol, which differs from other conditions reported in the literature 3, 15, 24, 25, 26, 27, 28, 30, 66Table 6Comparison of ethanol production by S. cerevisiae KKU-VN8 and other yeast strains reported in the literatures.Strain S 0 (g/L)Sugar source T (°C) P (g/L)SC(%)T.Y.(%)Reference K. marxianus DMKU 3-1042220Sugar cane juice4067.8N/A60.4Limtong et al 3 I. orientalis IPE 100150Glucose4265.5N/A85.5Kwon et al 17 P. kudriavzevii DMKU 3-ET15180Cassava starch hydrolysate4078.6N/A85.5Yuangsaard et al 15 S. cerevisiae NRRL Y-2034200Sweet sorghum juice3070.6N/AN/APhutela and Kaur 67 S. cerevisiae AT-3180Glucose4068.590.075.0Tofighi et al 66 S. cerevisiae SEMF1185Sweet sorghum juice33…”

Section: Discussionmentioning

confidence: 99%

High-temperature ethanol production using thermotolerant yeast newly isolated from Greater Mekong Subregion

Techaparin

Thanonkeo

Klanrit

2017

Brazilian Journal of Microbiology

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The application of high-potential thermotolerant yeasts is a key factor for successful ethanol production at high temperatures. Two hundred and thirty-four yeast isolates from Greater Mekong Subregion (GMS) countries, i.e., Thailand, The Lao People's Democratic Republic (Lao PDR) and Vietnam were obtained. Five thermotolerant yeasts, designated Saccharomyces cerevisiae KKU-VN8, KKU-VN20, and KKU-VN27, Pichia kudriavzevii KKU-TH33 and P. kudriavzevii KKU-TH43, demonstrated high temperature and ethanol tolerance levels up to 45 °C and 13% (v/v), respectively. All five strains produced higher ethanol concentrations and exhibited greater productivities and yields than the industrial strain S. cerevisiae TISTR5606 during high-temperature fermentation at 40 °C and 43 °C. S. cerevisiae KKU-VN8 demonstrated the best performance for ethanol production from glucose at 37 °C with an ethanol concentration of 72.69 g/L, a productivity of 1.59 g/L/h and a theoretical ethanol yield of 86.27%. The optimal conditions for ethanol production of S. cerevisiae KKU-VN8 from sweet sorghum juice (SSJ) at 40 °C were achieved using the Box–Behnken experimental design (BBD). The maximal ethanol concentration obtained during fermentation was 89.32 g/L, with a productivity of 2.48 g/L/h and a theoretical ethanol yield of 96.32%. Thus, the newly isolated thermotolerant S. cerevisiae KKU-VN8 exhibits a great potential for commercial-scale ethanol production in the future.

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Section: Discussionmentioning

confidence: 99%

High-temperature ethanol production using thermotolerant yeast newly isolated from Greater Mekong Subregion

Techaparin

Thanonkeo

Klanrit

2017

Brazilian Journal of Microbiology

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“…The optimal pH value of the present experiment was 7. The pH effect on the photodegradation of MB in Fe 3 O 4 /ZnO NC can be explained on the basis of zero point charge (pH zpc ), at which the surface functional groups of ZnO could be ZnOH 2 + , ZnOH, and ZnO − at pH < pHzpc, pHzpc and pH > pHzpc, respectively (Abdullohi et al, 2012;Safari et al, 2014;Vialli, 2011). It is shown in Figure 6 that the photodegradation efficiency at MB dye of 10 ppm reached 100% degradation within 4 hours.…”

Section: Photocatalytic Degradationmentioning

confidence: 99%

Synthesis, Characterization, and Photocatalytic Activity of Fe3O4@Zno Nanocomposite

Winatapura¹,

Dewi²,

Adi³

2016

IJTech

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A magnetic Fe 3 O 4 @ZnO nanocomposite (NC) was successfully synthesized by a wet milling method using a high energy milling (HEM) machine. The magnetic Fe 3 O 4 @ZnO NC was characterized by an X-ray Diffractometer (XRD), scanning and transmission electron microscopes (SEM and TEM), and a vibrating sample magnetometer (VSM @ZnO NC under UV irradiation were quantified by the degradation of a methylene blue (MB) dye solution. The result reveals that the photodegradation efficiency of Fe 3 O 4 @ZnO NC is favorable at pH neutral (pH = 7) reaching 100%. By increasing the MB dye concentration from 10 ppm to 40 ppm, the photodegradation efficiency decreases from 100% to 52%. The Fe 3 O 4 @ZnO NC can be easily collected by an external magnet. The magnetic Fe 3 O 4 @ZnO NC could be extended to various potential applications, such as purification processes, catalysis, separation, and photodegradation.

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“…A study conducted by Eslami et al used 1 to 45 mg of the modified mesoporous silica (SBA-15) by modification with Trithiane as a new effective adsorbent for removing the mercury from aqueous solution. They found that the optimal dose of adsorbent was 15 mg and the removal efficiency fixed with increasing of adsorbent dose (Bidhendi et al 2014). In Fig.…”

Section: Discussionmentioning

confidence: 99%

Bisacodyl removal from contaminated solution by synthesized mesoporous silica using experimental design method

et al. 2018

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Most of the medicinal compounds are entered no change into municipal wastewater and more than 90% of it remains in the wastewater. Mesoporous silica is known as thermally stable materials with controllable porosity and morphology. It is specified that these materials possess external and internal surfaces that can be selectively adsorbed the various compounds. In the present study, the synthesized mesoporous silica was studied to remove bisacodyl from polluted solutions. Mesoporous silica was synthesized by simple chemical method from tetraethylorthosilicate, ethanol (C2H5OH) and deionized water at 70 °C temperature. Characteristic of synthesized mesoporous silica was investigated by scanning electron microscopy. The effective parameters such as contact time, pH, adsorbate dose, and initial bisacodyl concentration were optimized for bisacodyl removal using 27 batch adsorption experiments according to design of experiment. The residual bisacodyl concentration was measured by UV–Vis spectrometer at the maximum wavelength of 580 nm. The statistical test and linear regression model were used by MINITAB 16 software for investigation of the main and interaction effects of each factor in the adsorption process. The ANOVA result showed 84% of bisacodyl was removed by synthesized mesoporous silica at optimum condition. The result of regression (R2 > 0.99) indicated that the adsorption process followed the Langmuir isotherm and second order kinetic at optimum conditions. The mesoporous silica is an efficient adsorbent for removing of bisacodyl from the polluted solutions so that it can be used for refining wastewaters containing medical compounds such as bisacodyl.

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Response surface analysis of photocatalytic degradation of methyl tert-butyl ether by core/shell Fe3O4/ZnO nanoparticles

Cited by 176 publications

References 24 publications

High-temperature ethanol production using thermotolerant yeast newly isolated from Greater Mekong Subregion

High-temperature ethanol production using thermotolerant yeast newly isolated from Greater Mekong Subregion

Synthesis, Characterization, and Photocatalytic Activity of Fe3O4@Zno Nanocomposite

Bisacodyl removal from contaminated solution by synthesized mesoporous silica using experimental design method

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