Pub Date : 2021-11-28DOI: 10.15377/2409-983x.2021.08.3
Estéfani Alves Asevedo, Sérgio Dantas de Oliveira Júnior, Everaldo Silvino dos Santos
Filmogenic coatings can be used as a post-harvest strategy to extend shelf life and ensure improvements in fruit quality and safety given their perishable nature. Due to their edibility, the composition of the coverings is a determining factor for their application, and for this reason, it is interesting and desirable that the constituents come from natural sources. The objective of the present study was to develop and characterize a pectin-based film extracted from cajá peel (Spondias mombin) and verify its efficiency as an edible coating in postharvest acerolas (Malpighia emarginata). The film was characterized in terms of mechanical properties by Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM); as well as in terms of chemical properties using the analysis of structural bonds by Fourier Transformed Infrared Spectroscopy (FTIR) and X-Ray Diffraction (XRD). In addition, the antimicrobial activity against two bacteria was evaluated. The analyzed film was presented as a dense membrane, with the presence of pores, fissures, and a very rough surface. The degree of esterification of pectin extract from cajá peel was 44%, and for this reason it was classified as low methocxyl (LM) pectin. The filmogenic solution presented antimicrobial activity against the bacteria Pseudomonas aeruginosa and Staphylococcus aureus. The applicability of the edible coating was tested on green acerolas, monitoring their maturation stage through analyzes such as weight loss, titratable acidity, and total soluble solids. At the end of the 7 days of storage, acerolas with the application of the coating showed 8.97% weight loss while acerolas without coating showed 9.89%; the percentage of total soluble solids was 7.68% higher for acerolas with the coating, as well as ascorbic acid content was higher for the protected fruits, indicating that the coverage favored the delay in the maturation of acerolas.
{"title":"Characterization of Filmogenic/Edible Covering Based on Pectin Extracted from Cajá (Spondias mombin) Applied to Coating Green Acerolas (Malpighia emarginata)","authors":"Estéfani Alves Asevedo, Sérgio Dantas de Oliveira Júnior, Everaldo Silvino dos Santos","doi":"10.15377/2409-983x.2021.08.3","DOIUrl":"https://doi.org/10.15377/2409-983x.2021.08.3","url":null,"abstract":"Filmogenic coatings can be used as a post-harvest strategy to extend shelf life and ensure improvements in fruit quality and safety given their perishable nature. Due to their edibility, the composition of the coverings is a determining factor for their application, and for this reason, it is interesting and desirable that the constituents come from natural sources. The objective of the present study was to develop and characterize a pectin-based film extracted from cajá peel (Spondias mombin) and verify its efficiency as an edible coating in postharvest acerolas (Malpighia emarginata). The film was characterized in terms of mechanical properties by Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM); as well as in terms of chemical properties using the analysis of structural bonds by Fourier Transformed Infrared Spectroscopy (FTIR) and X-Ray Diffraction (XRD). In addition, the antimicrobial activity against two bacteria was evaluated. The analyzed film was presented as a dense membrane, with the presence of pores, fissures, and a very rough surface. The degree of esterification of pectin extract from cajá peel was 44%, and for this reason it was classified as low methocxyl (LM) pectin. The filmogenic solution presented antimicrobial activity against the bacteria Pseudomonas aeruginosa and Staphylococcus aureus. The applicability of the edible coating was tested on green acerolas, monitoring their maturation stage through analyzes such as weight loss, titratable acidity, and total soluble solids. At the end of the 7 days of storage, acerolas with the application of the coating showed 8.97% weight loss while acerolas without coating showed 9.89%; the percentage of total soluble solids was 7.68% higher for acerolas with the coating, as well as ascorbic acid content was higher for the protected fruits, indicating that the coverage favored the delay in the maturation of acerolas.","PeriodicalId":335890,"journal":{"name":"Journal of Chemical Engineering Research Updates","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127132072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-15DOI: 10.15377/2409-983x.2021.08.2
S. Hosseinpour, Mahsa Bahramgour, S. R. Hosseini, Y. Yildirim, A. Niaei
In this research, it was tried to choose a kind of perovskite catalyst with optimized formulation La0.8Sr0.2Co0.66Fe0.34O3 to remove air pollutants. This perovskite catalyst stabilized on the various supports such as alumina and ZSM-5 with the sol-gel synthesis technique and ceramic monolith by dip-coating method. Four different catalysts by variable weight percentage including PE-Al 10%, PE-Al 20%, PE-Al 30%, and PE-Al 40% were prepared by sol-gel synthesis technique. In this work, the XRD technique was used to confirm the formation of perovskite catalysts’ crystalline phases on the supports. As a result, XRD patterns revealed the formation of the perovskite phase onto the alumina and zeolite supports. Activity tests of these four catalysts were examined in the catalytic oxidation of Toluene and CO using an experimental setup consisting of a tubular flow reactor at the temperature 280-400°C and 100-400°C for the toluene and CO removal systems, respectively. According to the results of the catalysts’ activity test, the alumina supported with 40% w/w perovskite catalyst showed the best performance, and its activity was similar to the activity of the bulk catalyst (over 95% conversion of toluene at about 290°C). For the coated catalysts on a ceramic monolith, the complete removal of carbon monoxide at 50°C was lower than the powdered form. Results from the activity test in a toluene removal system that show coating of the bulk and supported catalysts on ceramic monolith; have an essential impact on the activity test of these catalysts.
{"title":"VOC and CO Removals by Perovskite Type Nanocatalysts Supported on Commercial Substrates","authors":"S. Hosseinpour, Mahsa Bahramgour, S. R. Hosseini, Y. Yildirim, A. Niaei","doi":"10.15377/2409-983x.2021.08.2","DOIUrl":"https://doi.org/10.15377/2409-983x.2021.08.2","url":null,"abstract":"In this research, it was tried to choose a kind of perovskite catalyst with optimized formulation La0.8Sr0.2Co0.66Fe0.34O3 to remove air pollutants. This perovskite catalyst stabilized on the various supports such as alumina and ZSM-5 with the sol-gel synthesis technique and ceramic monolith by dip-coating method. Four different catalysts by variable weight percentage including PE-Al 10%, PE-Al 20%, PE-Al 30%, and PE-Al 40% were prepared by sol-gel synthesis technique. In this work, the XRD technique was used to confirm the formation of perovskite catalysts’ crystalline phases on the supports. As a result, XRD patterns revealed the formation of the perovskite phase onto the alumina and zeolite supports. Activity tests of these four catalysts were examined in the catalytic oxidation of Toluene and CO using an experimental setup consisting of a tubular flow reactor at the temperature 280-400°C and 100-400°C for the toluene and CO removal systems, respectively. According to the results of the catalysts’ activity test, the alumina supported with 40% w/w perovskite catalyst showed the best performance, and its activity was similar to the activity of the bulk catalyst (over 95% conversion of toluene at about 290°C). For the coated catalysts on a ceramic monolith, the complete removal of carbon monoxide at 50°C was lower than the powdered form. Results from the activity test in a toluene removal system that show coating of the bulk and supported catalysts on ceramic monolith; have an essential impact on the activity test of these catalysts. ","PeriodicalId":335890,"journal":{"name":"Journal of Chemical Engineering Research Updates","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128066518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-28DOI: 10.15377/2409-983x.2021.08.1
Guodong Liu, X. Guo, Junnan Zhao, R. Wang, Yurong He
{"title":"Investigation of Gas-Solid Flows in a Spout Fluidized Bed on Drag and Solid Stress: CFD-DEM, TFM, and Experimental Validation","authors":"Guodong Liu, X. Guo, Junnan Zhao, R. Wang, Yurong He","doi":"10.15377/2409-983x.2021.08.1","DOIUrl":"https://doi.org/10.15377/2409-983x.2021.08.1","url":null,"abstract":"","PeriodicalId":335890,"journal":{"name":"Journal of Chemical Engineering Research Updates","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121023284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-25DOI: 10.15377/2409-983X.2020.07.5
D. Sahin
{"title":"A Review of Micellar Enhanced Ultrafiltration Technique in the Removal of Heavy Metals from Aqueous Solutions","authors":"D. Sahin","doi":"10.15377/2409-983X.2020.07.5","DOIUrl":"https://doi.org/10.15377/2409-983X.2020.07.5","url":null,"abstract":"","PeriodicalId":335890,"journal":{"name":"Journal of Chemical Engineering Research Updates","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125281602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-25DOI: 10.15377/2409-983x.2020.07.3
A. Sood, Tulika Gaur
{"title":"Particle Size and Particle Size Distribution of Emulsion Polymers: A Review of Modeling Studies","authors":"A. Sood, Tulika Gaur","doi":"10.15377/2409-983x.2020.07.3","DOIUrl":"https://doi.org/10.15377/2409-983x.2020.07.3","url":null,"abstract":"","PeriodicalId":335890,"journal":{"name":"Journal of Chemical Engineering Research Updates","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123925553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-25DOI: 10.15377/2409-983X.2020.07.4
F. Salaün
Xylitol, a natural crystalline polyol, presents a cooling effect due to its negative heat of solution at 35 °C supported by humidity absorption, contributing to a fresh sensation when it dissolves. Since this material is sometimes in a liquid state, it cannot be incorporated in or onto a substrate without being protected. One of the strategies to protect the active substance may be forming a barrier layer at its surface, i.e., microencapsulation. The present work is devoted to studying the effect of continuous phase parameters affecting on encapsulation of xylitol with a poly (urea-urethane) shell through a two-step microencapsulation process. The first step is liquid-liquid dispersion either in toluene or Miglyol 812N, and the second step is microencapsulation by interfacial polymerization. The process can be used to control the size distribution of the microparticles, the thickness, and the chemical nature of the shell, which influences the release rate of the active substance. The choice of the continuous phase solvent (toluene or Miglyol 812N) required some changes in the formulation of the system, especially the HLB of the surfactant mixture, to obtain a stable emulsion with a narrow particle size distribution. The thermo-chemical and morphological characteristics of microparticles were studied by Fourier transform-infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC), enthalpy of dilution, and scanning electron microscope (SEM). The microparticle size is governed by the emulsion step and the chemical composition of the organic phase. Most of the thermal properties are related to their porous structure and their chemical shell formation during the interfacial polymerization step.
{"title":"The Effects of the Solvent Choice of the Continuous Phase on the Poly(Urea-Urethane) Microcapsules Properties","authors":"F. Salaün","doi":"10.15377/2409-983X.2020.07.4","DOIUrl":"https://doi.org/10.15377/2409-983X.2020.07.4","url":null,"abstract":"Xylitol, a natural crystalline polyol, presents a cooling effect due to its negative heat of solution at 35 °C supported by humidity absorption, contributing to a fresh sensation when it dissolves. Since this material is sometimes in a liquid state, it cannot be incorporated in or onto a substrate without being protected. One of the strategies to protect the active substance may be forming a barrier layer at its surface, i.e., microencapsulation. The present work is devoted to studying the effect of continuous phase parameters affecting on encapsulation of xylitol with a poly (urea-urethane) shell through a two-step microencapsulation process. The first step is liquid-liquid dispersion either in toluene or Miglyol 812N, and the second step is microencapsulation by interfacial polymerization. The process can be used to control the size distribution of the microparticles, the thickness, and the chemical nature of the shell, which influences the release rate of the active substance. The choice of the continuous phase solvent (toluene or Miglyol 812N) required some changes in the formulation of the system, especially the HLB of the surfactant mixture, to obtain a stable emulsion with a narrow particle size distribution. The thermo-chemical and morphological characteristics of microparticles were studied by Fourier transform-infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC), enthalpy of dilution, and scanning electron microscope (SEM). The microparticle size is governed by the emulsion step and the chemical composition of the organic phase. Most of the thermal properties are related to their porous structure and their chemical shell formation during the interfacial polymerization step.","PeriodicalId":335890,"journal":{"name":"Journal of Chemical Engineering Research Updates","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132450888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-08DOI: 10.15377/2409-983x.2020.07.2
D. Vamvuka, EvangelosMachairas, S. Sfakiotakis, O. Pantelaki
Various nut residues from agricultural production were investigated for their potential to be used as active carbons. Raw materials were pyrolyzed in a fixed bed unit and subsequently gasified by steam or carbon dioxide at different temperatures and duration of heat treatment. Biochars were characterized by physical and chemical analyses with respect to temperature and gasifying agents. Organic and mineral matter, elemental composition, structural characteristics, and surface functional groups were determined. Activation by steam presented a higher reactivity than carbon dioxide, reduced the yield of biochars, consumed more oxygen organic functional groups, favoured pore enlargement at high temperature, and increased the specific surface area (maximum 1257 m2/g) of pyrolyzed materials by 1.4 to 3.8 fold. Activation by carbon dioxide disrupted the hydrogen char structure, favoured microporosity, and increased the specific surface area (maximum 637 m2/g) of pyrolyzed materials by 1.8 to 3 fold. Gasified biochars at a high temperature were highly carbonized and exhibited aromatic structures, especially under steam activation.
{"title":"Physically Activated Agricultural Waste Biochars for Production of Pollutant Adsorbents","authors":"D. Vamvuka, EvangelosMachairas, S. Sfakiotakis, O. Pantelaki","doi":"10.15377/2409-983x.2020.07.2","DOIUrl":"https://doi.org/10.15377/2409-983x.2020.07.2","url":null,"abstract":"Various nut residues from agricultural production were investigated for their potential to be used as active carbons. Raw materials were pyrolyzed in a fixed bed unit and subsequently gasified by steam or carbon dioxide at different temperatures and duration of heat treatment. Biochars were characterized by physical and chemical analyses with respect to temperature and gasifying agents. Organic and mineral matter, elemental composition, structural characteristics, and surface functional groups were determined. Activation by steam presented a higher reactivity than carbon dioxide, reduced the yield of biochars, consumed more oxygen organic functional groups, favoured pore enlargement at high temperature, and increased the specific surface area (maximum 1257 m2/g) of pyrolyzed materials by 1.4 to 3.8 fold. Activation by carbon dioxide disrupted the hydrogen char structure, favoured microporosity, and increased the specific surface area (maximum 637 m2/g) of pyrolyzed materials by 1.8 to 3 fold. Gasified biochars at a high temperature were highly carbonized and exhibited aromatic structures, especially under steam activation.","PeriodicalId":335890,"journal":{"name":"Journal of Chemical Engineering Research Updates","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123229805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-18DOI: 10.15377/2409-983x.2020.07.1
C. Pirola
: Ultrasound (US) and other non-traditional energy sources (for instance microwave (MW)) are widely used to increase the rate of chemical reactions, to prepare nanoparticles, to extract natural products etc. In all such cases, the scaling-up of the process must have a defined economic constraint, which generally can be reduced to the evaluation of the parameter R C , which is the ratio between the raw energy cost to produce US (or MW) and the total production cost for unit mass of product. The paper gives a basic correlation among the different parameters to evaluate R C both for processes using only US (or MW and other not traditional sources) and those with mixed energy sources.
{"title":"Basic Economic Analysis for Sonochemical Processes","authors":"C. Pirola","doi":"10.15377/2409-983x.2020.07.1","DOIUrl":"https://doi.org/10.15377/2409-983x.2020.07.1","url":null,"abstract":": Ultrasound (US) and other non-traditional energy sources (for instance microwave (MW)) are widely used to increase the rate of chemical reactions, to prepare nanoparticles, to extract natural products etc. In all such cases, the scaling-up of the process must have a defined economic constraint, which generally can be reduced to the evaluation of the parameter R C , which is the ratio between the raw energy cost to produce US (or MW) and the total production cost for unit mass of product. The paper gives a basic correlation among the different parameters to evaluate R C both for processes using only US (or MW and other not traditional sources) and those with mixed energy sources.","PeriodicalId":335890,"journal":{"name":"Journal of Chemical Engineering Research Updates","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133207683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-12-20DOI: 10.15377/2409-983x.2019.06.2
N. Azbar, K. Arslan, T. Keskin, Duygu Karaalp
In this study, the role of trace element (TE) supplementation and performance characteristics of a thermophilic anaerobic digester fed by food wastes (FW) is investigated in the long run, and a representative operational data set for field application is reported over the whole experimental period. Continuous feeding of food wastes with a dry matter of 5% for 150 days was carried out using a 100 L pilot-scale CSTR type anaerobic digester under thermophilic operation conditions. Hydraulic retention time (HRT) and organic loading rate (OLR) were kept around 28 days and less than 3.0 kg oDM m day, respectively. Volumetric biogas production values were reported to be 0.32 m m day during the period where there is no TE supplementation; on the other hand, biogas production was doubled (0.69 mmday) following TE supplementation. This corresponds to an average unit biogas production of 317 and 443 L kg oDM, during TE supplementation and no TE supplementation periods, respectively. Statistical analysis indicated that Co, As, Se, and Al were the most significant trace elements affecting the digester performance.
本研究长期研究了添加微量元素(TE)的作用和食物垃圾厌氧消化池(FW)的性能特征，并在整个实验期间报告了具有代表性的现场应用运行数据集。采用100 L中试CSTR型厌氧消化池，在嗜热操作条件下，以5%的干物质对餐厨垃圾进行连续饲养150天。水力滞留时间(HRT)保持在28 d左右，有机加载率(OLR)保持在3.0 kg oDM m d以内。据报道，在没有补充TE的情况下，体积沼气产量为0.32立方米/天;另一方面，补充TE后，沼气产量增加了一倍(0.69 mmday)。这相当于在补充TE和不补充TE期间的平均单位沼气产量分别为317和443升千克oDM。统计分析表明，Co、As、Se和Al是影响沼气池性能最显著的微量元素。
{"title":"Enhancement of Thermophilic Digestion of Food Waste (FW) via Trace Element Supplementation","authors":"N. Azbar, K. Arslan, T. Keskin, Duygu Karaalp","doi":"10.15377/2409-983x.2019.06.2","DOIUrl":"https://doi.org/10.15377/2409-983x.2019.06.2","url":null,"abstract":"In this study, the role of trace element (TE) supplementation and performance characteristics of a thermophilic anaerobic digester fed by food wastes (FW) is investigated in the long run, and a representative operational data set for field application is reported over the whole experimental period. Continuous feeding of food wastes with a dry matter of 5% for 150 days was carried out using a 100 L pilot-scale CSTR type anaerobic digester under thermophilic operation conditions. Hydraulic retention time (HRT) and organic loading rate (OLR) were kept around 28 days and less than 3.0 kg oDM m day, respectively. Volumetric biogas production values were reported to be 0.32 m m day during the period where there is no TE supplementation; on the other hand, biogas production was doubled (0.69 mmday) following TE supplementation. This corresponds to an average unit biogas production of 317 and 443 L kg oDM, during TE supplementation and no TE supplementation periods, respectively. Statistical analysis indicated that Co, As, Se, and Al were the most significant trace elements affecting the digester performance.","PeriodicalId":335890,"journal":{"name":"Journal of Chemical Engineering Research Updates","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124824106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-12-18DOI: 10.15377/2409-983x.2019.06.1
A. Koçer, B. Inan, D. Özçimen
Nowadays, researches on microalgal biodiesel production are focused on to improve the process efficiency and reduce the operational costs. One of the most expensive steps in microalgal biodiesel production is lipid extraction of microalgae. In this study, C. minutissima microalgae was produced in photobioreactor, and then solvent extraction of microalgal lipids were investigated. Box-Behnken design (BBD) was used to study the effect of extraction temperature, solvent/biomass ratio and residence time of solvent on the oil yield and to optimize lipid extraction. The maximum extraction yield was found to be 75% under the conditions of at the temperature of 70°C, 30:1 solvent/biomass ratio and 8 h. This study showed that the most effective parameter on extraction yield was temperature among three parameters. The results showed that optimized process conditions improved the extraction yield and it is a cost-effective way to produce biodiesel efficiently.
{"title":"An Optimization Study of Lipid Extraction from Chlorella minutissima for Biodiesel Production","authors":"A. Koçer, B. Inan, D. Özçimen","doi":"10.15377/2409-983x.2019.06.1","DOIUrl":"https://doi.org/10.15377/2409-983x.2019.06.1","url":null,"abstract":"Nowadays, researches on microalgal biodiesel production are focused on to improve the process efficiency and reduce the operational costs. One of the most expensive steps in microalgal biodiesel production is lipid extraction of microalgae. In this study, C. minutissima microalgae was produced in photobioreactor, and then solvent extraction of microalgal lipids were investigated. Box-Behnken design (BBD) was used to study the effect of extraction temperature, solvent/biomass ratio and residence time of solvent on the oil yield and to optimize lipid extraction. The maximum extraction yield was found to be 75% under the conditions of at the temperature of 70°C, 30:1 solvent/biomass ratio and 8 h. This study showed that the most effective parameter on extraction yield was temperature among three parameters. The results showed that optimized process conditions improved the extraction yield and it is a cost-effective way to produce biodiesel efficiently.","PeriodicalId":335890,"journal":{"name":"Journal of Chemical Engineering Research Updates","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132509118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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