Pub Date : 2023-12-01DOI: 10.12911/22998993/172052
Débora Pereira da Silva, Andressa Caroline de Sousa, P. Scalize
Reports of gastrointestinal disease outbreaks caused by pathogenic protozoans in rural areas are still small in numbers. This study has evaluated, at global level, the parasitological contamination by Cryptosporidium spp. and Giardia spp., of water resources used as sources for human consumption in rural areas, spanning from 1994 to 2022. For such, a systematic review was conducted, following the PRISMA guidelines, applying a descriptive and statistical analysis to the data. A total of 29 eligible articles reported contamination in 90 different springs spread throughout six continents. It was possible to see a greater tendency of giardiasis outbreak occurrences in water coming from surface springs in countries with higher HDI (above 0.8), justified by the lack of data in countries with other HDIs. The water sources intended for human supply in rural areas are susceptible to parasitological contamination, especially in Asia and Oceania. In spite of the fact that there have been no reports regarding giar-diasis outbreaks in the reviewed studies, it is important to notice that the concentration of pathogens may have been greater due to the low recovery of the methods of detection. Therefore, it is advisable to conduct more studies about the contamination of water resources in rural areas, as well as the adoption of prevention measures regarding waterborne diseases, such as boiling water.
{"title":"Water for Human Consumption in Rural Areas Worldwide: A Systematic Review of the Presence of Cryptosporidium spp. and Giardia spp.","authors":"Débora Pereira da Silva, Andressa Caroline de Sousa, P. Scalize","doi":"10.12911/22998993/172052","DOIUrl":"https://doi.org/10.12911/22998993/172052","url":null,"abstract":"Reports of gastrointestinal disease outbreaks caused by pathogenic protozoans in rural areas are still small in numbers. This study has evaluated, at global level, the parasitological contamination by Cryptosporidium spp. and Giardia spp., of water resources used as sources for human consumption in rural areas, spanning from 1994 to 2022. For such, a systematic review was conducted, following the PRISMA guidelines, applying a descriptive and statistical analysis to the data. A total of 29 eligible articles reported contamination in 90 different springs spread throughout six continents. It was possible to see a greater tendency of giardiasis outbreak occurrences in water coming from surface springs in countries with higher HDI (above 0.8), justified by the lack of data in countries with other HDIs. The water sources intended for human supply in rural areas are susceptible to parasitological contamination, especially in Asia and Oceania. In spite of the fact that there have been no reports regarding giar-diasis outbreaks in the reviewed studies, it is important to notice that the concentration of pathogens may have been greater due to the low recovery of the methods of detection. Therefore, it is advisable to conduct more studies about the contamination of water resources in rural areas, as well as the adoption of prevention measures regarding waterborne diseases, such as boiling water.","PeriodicalId":15652,"journal":{"name":"Journal of Ecological Engineering","volume":" 6","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138610279","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 : 2023-12-01DOI: 10.12911/22998993/173210
Raed Al-Rbaihat, Mohammad Nour Ibrahim Al-Marafi
Nanoconcrete is an attractive research area because of its recent practical applications in building materials technologies. This study investigates the individual and combined effects of using nanoparticles in concrete mixtures as a cement substitute. Microscopic images are also used to determine changes in the microstructure of modified concrete in the present study. Concrete’s thermal and mechanical properties, including thermal conductivity ( k ), specific heat capacity ( C ), thermal diffusivity ( α ), and compressive strength ( σ ), are the leading concrete characteristics examined. The current study used different percentages (0%, 1%, 3%, and 5%) of nano-SiO 2 , nano-TiO 2, and combined nano-SiO 2 /TiO 2 particles as cement substitutes for 7 and 28 days of curing to examine the characteristics of nanoconcrete compared to conventional concrete (CC). The results indicated that adding individual nanoparticles to CC could improve concrete’s thermal and mechanical properties. Among the investigated nanomaterials (nano-SiO 2 , nano-TiO 2, and combined nano-SiO 2 /TiO 2 particles), nano-SiO 2 was superior in that context. The op - timal thermal properties of nanoconcrete were achieved when 5% nano-SiO 2 (C-S5 specimen) was added. The k and α coefficients of sample C-S5 compared to the CC specimen were reduced by 65.6% and 80.3%, respectively, while the C coefficient was increased by 12.8%. Meanwhile, the optimal compressive strength coefficient of nano - concrete was achieved when 3% nano-SiO 2 (C-S3 specimen) was added, where the compressive strength coefficient of sample C-S3 compared to sample CC was increased by 19.6%. In contrast, for the combined effect, the thermal properties of concrete were improved, but the compressive strength coefficient of concrete was reduced. Overall, the present experimental findings offer valuable information about the impact of nanotechnology on high-performance concrete to save energy in buildings.
{"title":"Combined Effect of Silicon Dioxide and Titanium Dioxide Nanoparticles on Concrete Properties","authors":"Raed Al-Rbaihat, Mohammad Nour Ibrahim Al-Marafi","doi":"10.12911/22998993/173210","DOIUrl":"https://doi.org/10.12911/22998993/173210","url":null,"abstract":"Nanoconcrete is an attractive research area because of its recent practical applications in building materials technologies. This study investigates the individual and combined effects of using nanoparticles in concrete mixtures as a cement substitute. Microscopic images are also used to determine changes in the microstructure of modified concrete in the present study. Concrete’s thermal and mechanical properties, including thermal conductivity ( k ), specific heat capacity ( C ), thermal diffusivity ( α ), and compressive strength ( σ ), are the leading concrete characteristics examined. The current study used different percentages (0%, 1%, 3%, and 5%) of nano-SiO 2 , nano-TiO 2, and combined nano-SiO 2 /TiO 2 particles as cement substitutes for 7 and 28 days of curing to examine the characteristics of nanoconcrete compared to conventional concrete (CC). The results indicated that adding individual nanoparticles to CC could improve concrete’s thermal and mechanical properties. Among the investigated nanomaterials (nano-SiO 2 , nano-TiO 2, and combined nano-SiO 2 /TiO 2 particles), nano-SiO 2 was superior in that context. The op - timal thermal properties of nanoconcrete were achieved when 5% nano-SiO 2 (C-S5 specimen) was added. The k and α coefficients of sample C-S5 compared to the CC specimen were reduced by 65.6% and 80.3%, respectively, while the C coefficient was increased by 12.8%. Meanwhile, the optimal compressive strength coefficient of nano - concrete was achieved when 3% nano-SiO 2 (C-S3 specimen) was added, where the compressive strength coefficient of sample C-S3 compared to sample CC was increased by 19.6%. In contrast, for the combined effect, the thermal properties of concrete were improved, but the compressive strength coefficient of concrete was reduced. Overall, the present experimental findings offer valuable information about the impact of nanotechnology on high-performance concrete to save energy in buildings.","PeriodicalId":15652,"journal":{"name":"Journal of Ecological Engineering","volume":" 1230","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138610359","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 : 2023-12-01DOI: 10.12911/22998993/174291
A. Pusz, Magdalena Paulina Wiśniewska, D. Rogalski, Marcin Staśkiewicz
Recultivated landfills, despite remedial actions, may pose a threat to human health and the environment
尽管采取了补救措施，但重新开垦的垃圾填埋场仍可能对人类健康和环境构成威胁
{"title":"Assessment of the Impact of a Recultivated Landfill on the Soil Environment","authors":"A. Pusz, Magdalena Paulina Wiśniewska, D. Rogalski, Marcin Staśkiewicz","doi":"10.12911/22998993/174291","DOIUrl":"https://doi.org/10.12911/22998993/174291","url":null,"abstract":"Recultivated landfills, despite remedial actions, may pose a threat to human health and the environment","PeriodicalId":15652,"journal":{"name":"Journal of Ecological Engineering","volume":" 2","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138617033","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 : 2023-12-01DOI: 10.12911/22998993/173564
M. Al-Aseebee, A. Ketata, Ahmed E. Gomaa, Olfa Moussa, Zied Driss, M. Abid, A. Naje, Haitham H. Emaish
Biodiesel is regarded as a clean fuel alternative to fossil diesel fuel for fewer pollutant emissions of internal combustion engines. The biodiesel type can be made from waste frying oil, thus it has to be done right. Waste vegetable oil can be provided for free or at a low cost by restaurants and food processors that often use frying oils. Animal fat is also available for free or for a nominal fee from grocery stores, restaurants, and butchers who use lots of fats in their cooking. The methyl ester of oleic acid methyl ester (OAME) biodiesel was produced from used vegetable oil using the transesterification process in order to compare the performance of the 67 kW KUBOTA tractor diesel engine when utilizing OAME and fossil diesel. OAME biofuel was used without being mixed. The engine’s reli - ability metrics and important indicators, including the brake torque, indicated power, brake-specific fuel consump - tion (BSFC) and burn duration, were identified. Optimal implementation was met by fossil diesel and the tested characteristics were very close. The OAME biofuel performs better in terms of volumetric efficiency and duration of combustion than the conventional diesel. The decision to choose a specific biofuel that is produced from a par - ticular source so largely hinges on its availability and economic feasibility wherever it is used.
{"title":"Modeling of Waste Vegetable Oil Biodiesel for Tractor Engine Utilization","authors":"M. Al-Aseebee, A. Ketata, Ahmed E. Gomaa, Olfa Moussa, Zied Driss, M. Abid, A. Naje, Haitham H. Emaish","doi":"10.12911/22998993/173564","DOIUrl":"https://doi.org/10.12911/22998993/173564","url":null,"abstract":"Biodiesel is regarded as a clean fuel alternative to fossil diesel fuel for fewer pollutant emissions of internal combustion engines. The biodiesel type can be made from waste frying oil, thus it has to be done right. Waste vegetable oil can be provided for free or at a low cost by restaurants and food processors that often use frying oils. Animal fat is also available for free or for a nominal fee from grocery stores, restaurants, and butchers who use lots of fats in their cooking. The methyl ester of oleic acid methyl ester (OAME) biodiesel was produced from used vegetable oil using the transesterification process in order to compare the performance of the 67 kW KUBOTA tractor diesel engine when utilizing OAME and fossil diesel. OAME biofuel was used without being mixed. The engine’s reli - ability metrics and important indicators, including the brake torque, indicated power, brake-specific fuel consump - tion (BSFC) and burn duration, were identified. Optimal implementation was met by fossil diesel and the tested characteristics were very close. The OAME biofuel performs better in terms of volumetric efficiency and duration of combustion than the conventional diesel. The decision to choose a specific biofuel that is produced from a par - ticular source so largely hinges on its availability and economic feasibility wherever it is used.","PeriodicalId":15652,"journal":{"name":"Journal of Ecological Engineering","volume":"24 4","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138624400","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 : 2023-12-01DOI: 10.12911/22998993/172424
Cong Ngoc Phan, A. Strużyński, Tomasz Kowalik
The Nida valley study area underwent examination to investigate the hydrochemical components and the correlation between groundwater (GW) and surface water (SW). Over a 12-month period from November 2021 to October 2022, 9 monitoring points were established, consisting of 7 GW points and 2 SW points, with a monitoring frequency of once per month. The research findings indicate that the hydrochemical components and direction of GW flow in the study area can be classified into 3 distinct regions. The chemical composition is complex in areas near the Nida River, stable in the region near the Smuga Umianowicka branch, and different in other areas. It was observed that the SW in the Nida River and Smuga Umianowicka branch exhibits a relatively uncomplicated chemical composition due to minimal human impact in the natural area. However, dissimilarities between them were also identified and explained by the flow regulation of the dam built on the branch within the study area. The application of the Shapiro-Wilk test (α = 0.05) and Kruskal-Wallis test (α = 0.05) revealed sta - tistically significant differences among the recorded hydrochemical component values throughout the measure - ment period. Furthermore, Pearson’s correlation coefficient analysis (α = 0.001) indicated correlations between the hydrochemical components of SW and GW in the riparian area and strong correlations among GW samples. Principal Component Analysis (PCA) identified significant dissimilarity and similarity between GW and SW samples based on their characteristics.
{"title":"Correlation Between Hydrochemical Component of Surface Water and Groundwater in Nida Valley, Poland","authors":"Cong Ngoc Phan, A. Strużyński, Tomasz Kowalik","doi":"10.12911/22998993/172424","DOIUrl":"https://doi.org/10.12911/22998993/172424","url":null,"abstract":"The Nida valley study area underwent examination to investigate the hydrochemical components and the correlation between groundwater (GW) and surface water (SW). Over a 12-month period from November 2021 to October 2022, 9 monitoring points were established, consisting of 7 GW points and 2 SW points, with a monitoring frequency of once per month. The research findings indicate that the hydrochemical components and direction of GW flow in the study area can be classified into 3 distinct regions. The chemical composition is complex in areas near the Nida River, stable in the region near the Smuga Umianowicka branch, and different in other areas. It was observed that the SW in the Nida River and Smuga Umianowicka branch exhibits a relatively uncomplicated chemical composition due to minimal human impact in the natural area. However, dissimilarities between them were also identified and explained by the flow regulation of the dam built on the branch within the study area. The application of the Shapiro-Wilk test (α = 0.05) and Kruskal-Wallis test (α = 0.05) revealed sta - tistically significant differences among the recorded hydrochemical component values throughout the measure - ment period. Furthermore, Pearson’s correlation coefficient analysis (α = 0.001) indicated correlations between the hydrochemical components of SW and GW in the riparian area and strong correlations among GW samples. Principal Component Analysis (PCA) identified significant dissimilarity and similarity between GW and SW samples based on their characteristics.","PeriodicalId":15652,"journal":{"name":"Journal of Ecological Engineering","volume":" 2","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138617095","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 : 2023-12-01DOI: 10.12911/22998993/172352
R. Ratnawulan, Detty Rahmadhani, Ahmad Fauzi, R. Jonuarti, F. L. Supian, Fadhila Ulfa Jhora
Various efforts can be made to obtain clean water in the environment by utilizing semiconductor technology. This study aims to inform the synthesis and characterization of MnO 2 /CuO/Fe 2 O 3 photocatalyst for crystal violet degradation in wastewater. Nanocomposite was synthesized through a sol-gel process with three semiconductor materials doped. X-ray diffraction (XRD) was employed to analyze the nanocomposite structure and determine crystal size. Fourier transform infrared (FTIR) was used to provide functional groups in the nanocomposite. A scanning electron microscope (SEM) can characterize surface morphology and particle size. The results of the SEM show that an increase in sintering temperature causes the smallest particle sizes to be 54.79 nm. The result of characterization using the ultraviolet-visible (Uv-Vis) spectrophotometry analysis the most effective band gap value in photocatalyst activity was 1.36 eV. The optimum percent of degradation MnO 2 /CuO/Fe 2 O 3 catalyst was 50.40% for the sample at a temperature of 400 °C under irradiation with sunlight for six hours. Test results show that increased sintering temperature increased the photocatalytic activity.
{"title":"Synthesis and Characterization of Photocatalyst Nanocomposite for the Degradation of Organic Pollutants in Wastewater","authors":"R. Ratnawulan, Detty Rahmadhani, Ahmad Fauzi, R. Jonuarti, F. L. Supian, Fadhila Ulfa Jhora","doi":"10.12911/22998993/172352","DOIUrl":"https://doi.org/10.12911/22998993/172352","url":null,"abstract":"Various efforts can be made to obtain clean water in the environment by utilizing semiconductor technology. This study aims to inform the synthesis and characterization of MnO 2 /CuO/Fe 2 O 3 photocatalyst for crystal violet degradation in wastewater. Nanocomposite was synthesized through a sol-gel process with three semiconductor materials doped. X-ray diffraction (XRD) was employed to analyze the nanocomposite structure and determine crystal size. Fourier transform infrared (FTIR) was used to provide functional groups in the nanocomposite. A scanning electron microscope (SEM) can characterize surface morphology and particle size. The results of the SEM show that an increase in sintering temperature causes the smallest particle sizes to be 54.79 nm. The result of characterization using the ultraviolet-visible (Uv-Vis) spectrophotometry analysis the most effective band gap value in photocatalyst activity was 1.36 eV. The optimum percent of degradation MnO 2 /CuO/Fe 2 O 3 catalyst was 50.40% for the sample at a temperature of 400 °C under irradiation with sunlight for six hours. Test results show that increased sintering temperature increased the photocatalytic activity.","PeriodicalId":15652,"journal":{"name":"Journal of Ecological Engineering","volume":"12 3","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138623007","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 : 2023-12-01DOI: 10.12911/22998993/171526
Roaya M. Abdoun, Omaima S. Darwish, F. Hashem, Said A. Shehata
Water shortage consider on of the main threats facing the agriculture, mainly in the Mediterranean area. So that there is a great need to apply new methods to water resource management. The crop models are used to achieve this objective. Tomato is a significant vegetable crop globally and represent an important part of horticultural production with 180 million tons produced on over five million hectares even though few studies have validated the AquaCrop model, especially in Egypt. This study was conducted in a protected cultivation experimental farm, Agricultural Research Center (ARC), Dokki, Giza, Egypt during the winter seasons of 2019/2020 and 2020/2021. Different irrigation levels (IL): 55%, 70%, 85%, 100%, and 115% of evapotranspiration (Eto) were applied on to - mato. Plant growth parameters, relative chlorophyll content (SPAD), yield, fruit quality and plant nutrients (NPK) were recorded at both seasons. Also, the aforementioned irrigation levels were used to validate the AquaCrop model on different climate change scenarios on tomato productivity in 2050 and 2100. The findings revealed that the highest plant growth parameters were obtained in 85% and 100% Eto as compared to all treatments at both seasons. In contrast, the 55% of Eto obtained the lowest values of all plant growth parameters. The number of fruits/ plant, early yield, and total yield of 100% Eto were ranked secondly. Fruits quality was significantly affected by the tested ILs. The highest values of TSS, firmness and vit C of tomato fruits were obtained by 55% followed by 70% Eto. The lowest proline content was recorded at 115% of Eto in both seasons. The content of proline in plants of 70% Eto ranked secondly after 55% of Eto in both seasons. The results of AquaCrop model (Version 7.0) revealed that the crop productivity decreased by 4% and 33% of RCP4.5 and RCP8.5 scenarios, respectively, of the years 2050, 14% and 44% for the same scenarios, respectively, of the year 2100.
{"title":"Influence of Irrigation Levels on Morphological Attributes and Yield of Tomato under Current and Climate Change Conditions","authors":"Roaya M. Abdoun, Omaima S. Darwish, F. Hashem, Said A. Shehata","doi":"10.12911/22998993/171526","DOIUrl":"https://doi.org/10.12911/22998993/171526","url":null,"abstract":"Water shortage consider on of the main threats facing the agriculture, mainly in the Mediterranean area. So that there is a great need to apply new methods to water resource management. The crop models are used to achieve this objective. Tomato is a significant vegetable crop globally and represent an important part of horticultural production with 180 million tons produced on over five million hectares even though few studies have validated the AquaCrop model, especially in Egypt. This study was conducted in a protected cultivation experimental farm, Agricultural Research Center (ARC), Dokki, Giza, Egypt during the winter seasons of 2019/2020 and 2020/2021. Different irrigation levels (IL): 55%, 70%, 85%, 100%, and 115% of evapotranspiration (Eto) were applied on to - mato. Plant growth parameters, relative chlorophyll content (SPAD), yield, fruit quality and plant nutrients (NPK) were recorded at both seasons. Also, the aforementioned irrigation levels were used to validate the AquaCrop model on different climate change scenarios on tomato productivity in 2050 and 2100. The findings revealed that the highest plant growth parameters were obtained in 85% and 100% Eto as compared to all treatments at both seasons. In contrast, the 55% of Eto obtained the lowest values of all plant growth parameters. The number of fruits/ plant, early yield, and total yield of 100% Eto were ranked secondly. Fruits quality was significantly affected by the tested ILs. The highest values of TSS, firmness and vit C of tomato fruits were obtained by 55% followed by 70% Eto. The lowest proline content was recorded at 115% of Eto in both seasons. The content of proline in plants of 70% Eto ranked secondly after 55% of Eto in both seasons. The results of AquaCrop model (Version 7.0) revealed that the crop productivity decreased by 4% and 33% of RCP4.5 and RCP8.5 scenarios, respectively, of the years 2050, 14% and 44% for the same scenarios, respectively, of the year 2100.","PeriodicalId":15652,"journal":{"name":"Journal of Ecological Engineering","volume":"4 12","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138625484","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 : 2023-12-01DOI: 10.12911/22998993/174003
Nuraini Nuraini, I. Mufandi, S. Jamilatun, A. Rahayu
{"title":"Exploring Cacao Husk Waste: Surface Modification, Characterization, and its Potential for Removing Phosphate and Nitrate Ions","authors":"Nuraini Nuraini, I. Mufandi, S. Jamilatun, A. Rahayu","doi":"10.12911/22998993/174003","DOIUrl":"https://doi.org/10.12911/22998993/174003","url":null,"abstract":"","PeriodicalId":15652,"journal":{"name":"Journal of Ecological Engineering","volume":"51 11","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138626891","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 : 2023-11-01DOI: 10.12911/22998993/169380
Dunya A. Alhadithy, Safaa Rasheed Yasin
Aspergillus niger isolated from palm dates was examined to produce citric acid. The isolates from zahdi dates ( A. niger S11) had the best yield of citric acid with a straightforward and efficient isolation technique without the need for purification of the isolates. The best result s of citric acid obtained in the static air, using Czapek dox liquid medium, were 37.116 g/l, 33.742% yield, and 0.0859 g/L·h productivity, and in the 1 vvm air were 47.248 g/L, 42.953% yield, and 0.1094 g/L·h productivity, under temperature 30 °C, mixing speed 150 rpm, pH 4, sugar concentration 11%, and inoculum size 5%. Yield and concentration were 23.139% and 25.453 g/L using Date syrup.
{"title":"Product Concentration, Yield Percentage and Productivity of Citric Acid Formation Using Aspergillus Niger Isolated from Palm Dates","authors":"Dunya A. Alhadithy, Safaa Rasheed Yasin","doi":"10.12911/22998993/169380","DOIUrl":"https://doi.org/10.12911/22998993/169380","url":null,"abstract":"Aspergillus niger isolated from palm dates was examined to produce citric acid. The isolates from zahdi dates ( A. niger S11) had the best yield of citric acid with a straightforward and efficient isolation technique without the need for purification of the isolates. The best result s of citric acid obtained in the static air, using Czapek dox liquid medium, were 37.116 g/l, 33.742% yield, and 0.0859 g/L·h productivity, and in the 1 vvm air were 47.248 g/L, 42.953% yield, and 0.1094 g/L·h productivity, under temperature 30 °C, mixing speed 150 rpm, pH 4, sugar concentration 11%, and inoculum size 5%. Yield and concentration were 23.139% and 25.453 g/L using Date syrup.","PeriodicalId":15652,"journal":{"name":"Journal of Ecological Engineering","volume":"366 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134996561","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 : 2023-11-01DOI: 10.12911/22998993/171273
Anna Hołda, Małgorzata Śliwka, Małgorzata Pawul
zymes
{"title":"Assessment of the Impact of a Municipal Landfill on Microbiological Quality of Air in the Revitalized Area of “Brzeszcze Wschód” Hard Coal Mine","authors":"Anna Hołda, Małgorzata Śliwka, Małgorzata Pawul","doi":"10.12911/22998993/171273","DOIUrl":"https://doi.org/10.12911/22998993/171273","url":null,"abstract":"zymes","PeriodicalId":15652,"journal":{"name":"Journal of Ecological Engineering","volume":"361 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134996566","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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