Pub Date : 2023-07-15DOI: 10.54279/mijeec.v5i2.250858
Macdonald Tatenda Muronda, Obey Gotore
Mature Canna indica L., contains significant percentages of hemicellulose (21.6±0.22%) and lignin (20.14±0.13%), showing its high potential as a biogas source. This study explores the potential of using C. indica biomass harvested from waterlogged clay areas for biogas production. The research focuses on optimizing the anaerobic co-digestion process with swine dung through varying calcium oxide (CaO) pretreatment concentrations during a 45-day experiment. CaO pretreatment significantly enhances biogas yield, with 2% CaO yielding the highest biogas production at 8024.10 mL. Methane concentration analysis reveals that higher CaO concentrations, notably 2% and 3%, accelerate methane production, indicating an optimal CaO concentration of around 2% for maximizing methane yield. This study outperforms others in anaerobic co-digestion, achieving a methane concentration of 64.93%. Data on C. indica at different CaO concentrations as a substrate underscores the need for precise CaO tuning for optimal methane production. The findings open avenues for sustainable waste management and renewable energy production, hinting at promising developments in energy solutions through optimized anaerobic co-digestion processes using C. indica and buffalo dung.
{"title":"Revealing sustainable energy opportunities through the integrated use of Canna indica biomass and buffalo manure for biogas generation","authors":"Macdonald Tatenda Muronda, Obey Gotore","doi":"10.54279/mijeec.v5i2.250858","DOIUrl":"https://doi.org/10.54279/mijeec.v5i2.250858","url":null,"abstract":"Mature Canna indica L., contains significant percentages of hemicellulose (21.6±0.22%) and lignin (20.14±0.13%), showing its high potential as a biogas source. This study explores the potential of using C. indica biomass harvested from waterlogged clay areas for biogas production. The research focuses on optimizing the anaerobic co-digestion process with swine dung through varying calcium oxide (CaO) pretreatment concentrations during a 45-day experiment. CaO pretreatment significantly enhances biogas yield, with 2% CaO yielding the highest biogas production at 8024.10 mL. Methane concentration analysis reveals that higher CaO concentrations, notably 2% and 3%, accelerate methane production, indicating an optimal CaO concentration of around 2% for maximizing methane yield. This study outperforms others in anaerobic co-digestion, achieving a methane concentration of 64.93%. Data on C. indica at different CaO concentrations as a substrate underscores the need for precise CaO tuning for optimal methane production. The findings open avenues for sustainable waste management and renewable energy production, hinting at promising developments in energy solutions through optimized anaerobic co-digestion processes using C. indica and buffalo dung.","PeriodicalId":18176,"journal":{"name":"Maejo International Journal of Energy and Environmental Communication","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139359002","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 : 2023-07-05DOI: 10.54279/mijeec.v5i2.250834
Bussarin Tongmee, Yuwalee Unpaprom, Rameshprabu Ramaraj, Kriangsak Mengumphan, D. Amornlerdpison
Integrating sustainability innovation and a circular economy model in extracting freshwater hybrid catfish oil can lead to economic, environmental, and social gains, aligning closely. Fish oil is an industrial product of great nutritional value due to its having long-chain polyunsaturated fatty acids. Moreover, it is highly valued for its prophylactic and therapeutic properties in nutritional and health fields. Moreover, these fatty acids are related to different neuronal functions, and their absence is associated with diverse inflammatory processes and the precarious development of neurons in human patients. Fish oil from the body parts of the hybrid catfish' frozen adipose tissue was extracted using the conventional cooking method, and a screw compressor squeezed the prepared sample and then steamed it to separate solid and oil portions to determine quantitative yield. The GC-MS method characterized the obtained total extracts for the qualitative and quantitative determination of the presence of fatty acids. Oil contents of adipose tissues were saturated fatty acids, monounsaturated fatty acids, and unsaturated fatty acids 37.99±0.41%, 48.43±1.75%, and 13.58±1.33%, respectively. The oil was allowed to examined physical-chemical properties and microbial activities. The results show that the hybrid catfish studied are a rich source of omega-3, omega-6, and omega-9 polyunsaturated fatty acids.
{"title":"Sustainability innovation and circular economy of freshwater hybrid catfish oil extraction","authors":"Bussarin Tongmee, Yuwalee Unpaprom, Rameshprabu Ramaraj, Kriangsak Mengumphan, D. Amornlerdpison","doi":"10.54279/mijeec.v5i2.250834","DOIUrl":"https://doi.org/10.54279/mijeec.v5i2.250834","url":null,"abstract":"Integrating sustainability innovation and a circular economy model in extracting freshwater hybrid catfish oil can lead to economic, environmental, and social gains, aligning closely. Fish oil is an industrial product of great nutritional value due to its having long-chain polyunsaturated fatty acids. Moreover, it is highly valued for its prophylactic and therapeutic properties in nutritional and health fields. Moreover, these fatty acids are related to different neuronal functions, and their absence is associated with diverse inflammatory processes and the precarious development of neurons in human patients. Fish oil from the body parts of the hybrid catfish' frozen adipose tissue was extracted using the conventional cooking method, and a screw compressor squeezed the prepared sample and then steamed it to separate solid and oil portions to determine quantitative yield. The GC-MS method characterized the obtained total extracts for the qualitative and quantitative determination of the presence of fatty acids. Oil contents of adipose tissues were saturated fatty acids, monounsaturated fatty acids, and unsaturated fatty acids 37.99±0.41%, 48.43±1.75%, and 13.58±1.33%, respectively. The oil was allowed to examined physical-chemical properties and microbial activities. The results show that the hybrid catfish studied are a rich source of omega-3, omega-6, and omega-9 polyunsaturated fatty acids.","PeriodicalId":18176,"journal":{"name":"Maejo International Journal of Energy and Environmental Communication","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139362629","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}
Catheter-Associated Urinary Tract Infections (CAUTIs) are one of the major diseases that cause severe illness and death among the wider population. More than 30,000 deaths are reported each year due to CAUTI. These infections are caused due to different biofilm- forming species such as Escherichia coli (E. coli), Enterococcus faecalis (E. faecalis), Candida spp, Klebsiella spp, Proteus spp, Bacteroides spp, Staphylococcus aureus, and Enterobacter spp. This study examined the growth of two major uropathogenic (E. coli and E. faecalis) strains on catheter surfaces under antibiotic-treated and untreated conditions. The antibiotics used for this study are Ciprofloxacin and Doxycycline, which are considered to be broad-spectrum antibiotics. The Minimum Inhibitory Concentration (MIC) assay was performed to identify the concentration at which these antibiotics show efficient inhibition. The results show that both antibiotics have an inhibitory effect on single and dual-species biofilms. However, E. coli is more resistant to Doxycycline (MIC: 100 μg/mL), whereas E. faecalis is more resistant to Ciprofloxacin (MIC: 50 μg/mL). Interestingly, the dual-species cultures are more susceptible to both antibiotics at lower concentrations, 5μg/mL. Furthermore, a CFU assay was performed to quantify the results obtained, and a similar trend could be observed with around a 4-fold reduction in bacterial colonies when catheters are coated with antibiotics. In addition, the antibiotic-coated catheters contribute no pathogen contamination to the environment.
{"title":"A sustainable approach to control biofilms infections and reduce medical waste: Catheters coated with antibiotics inhibit single and dual-species biofilms","authors":"Shivani Sivakumar, Aravinth Sithivinayagam, Bavatharani Krishnasamy, Deenadayalan Karaiyagowder Govindarajan, Ram Kothandan, Kumaravel Kandaswamy","doi":"10.54279/mijeec.v5i1.249294","DOIUrl":"https://doi.org/10.54279/mijeec.v5i1.249294","url":null,"abstract":"Catheter-Associated Urinary Tract Infections (CAUTIs) are one of the major diseases that cause severe illness and death among the wider population. More than 30,000 deaths are reported each year due to CAUTI. These infections are caused due to different biofilm- forming species such as Escherichia coli (E. coli), Enterococcus faecalis (E. faecalis), Candida spp, Klebsiella spp, Proteus spp, Bacteroides spp, Staphylococcus aureus, and Enterobacter spp. This study examined the growth of two major uropathogenic (E. coli and E. faecalis) strains on catheter surfaces under antibiotic-treated and untreated conditions. The antibiotics used for this study are Ciprofloxacin and Doxycycline, which are considered to be broad-spectrum antibiotics. The Minimum Inhibitory Concentration (MIC) assay was performed to identify the concentration at which these antibiotics show efficient inhibition. The results show that both antibiotics have an inhibitory effect on single and dual-species biofilms. However, E. coli is more resistant to Doxycycline (MIC: 100 μg/mL), whereas E. faecalis is more resistant to Ciprofloxacin (MIC: 50 μg/mL). Interestingly, the dual-species cultures are more susceptible to both antibiotics at lower concentrations, 5μg/mL. Furthermore, a CFU assay was performed to quantify the results obtained, and a similar trend could be observed with around a 4-fold reduction in bacterial colonies when catheters are coated with antibiotics. In addition, the antibiotic-coated catheters contribute no pathogen contamination to the environment.","PeriodicalId":18176,"journal":{"name":"Maejo International Journal of Energy and Environmental Communication","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86378513","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}
This research delves into the innovative fermentation of wines using blue-green algae (spirulina), pineapple, and longan fruit. Traditional wine consumption, often synonymous with alcohol content, has seen a shift in value and health appeal with the infusion of spirulina. The fermentation process was monitored using both single and mixed cultures of Saccharomyces cerevisiae until it achieved 12% alcohol content. Sensory evaluations by fruit wine consumers revealed gender-based preferences in the acceptability of tangerine wine formulations. Specifically, females showed a higher liking for 5 out of 9 wine formulas, with sugar and acidity playing pivotal roles in flavours preference. Three distinct algae wine recipes were fermented at room temperature, with chemical analyses post-fermentation indicating standard pH levels for wine (3.0 - 4.0). Among them, the seaweed-pineapple blend was the standout, with a pH of 3.55 and a 72.96% approval rate among taste testers. The economic analysis highlighted the pineapple-seaweed variant's high production cost, though pure spirulina wine boasted the most significant return on investment. In conclusion, pineapple-infused spirulina wine emerges as a frontrunner in terms of taste, standard adherence, and economic viability, presenting a solution to the regional fruit surplus.
{"title":"Bioconvertibility of fermentative vert wine: a comparative study of blue- green algae, pineapple, and longan fruits","authors":"Bua Chompoo Narapong, Priyanuch Tansui, Porntip Nuchanatai, Niwooti Whangchai, D. Thiammueang","doi":"10.54279/mijeec.v5i1.250559","DOIUrl":"https://doi.org/10.54279/mijeec.v5i1.250559","url":null,"abstract":"\u0000\u0000\u0000This research delves into the innovative fermentation of wines using blue-green algae (spirulina), pineapple, and longan fruit. Traditional wine consumption, often synonymous with alcohol content, has seen a shift in value and health appeal with the infusion of spirulina. The fermentation process was monitored using both single and mixed cultures of Saccharomyces cerevisiae until it achieved 12% alcohol content. Sensory evaluations by fruit wine consumers revealed gender-based preferences in the acceptability of tangerine wine formulations. Specifically, females showed a higher liking for 5 out of 9 wine formulas, with sugar and acidity playing pivotal roles in flavours preference. Three distinct algae wine recipes were fermented at room temperature, with chemical analyses post-fermentation indicating standard pH levels for wine (3.0 - 4.0). Among them, the seaweed-pineapple blend was the standout, with a pH of 3.55 and a 72.96% approval rate among taste testers. The economic analysis highlighted the pineapple-seaweed variant's high production cost, though pure spirulina wine boasted the most significant return on investment. In conclusion, pineapple-infused spirulina wine emerges as a frontrunner in terms of taste, standard adherence, and economic viability, presenting a solution to the regional fruit surplus.\u0000\u0000\u0000","PeriodicalId":18176,"journal":{"name":"Maejo International Journal of Energy and Environmental Communication","volume":"94 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72720661","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 : 2023-03-10DOI: 10.54279/mijeec.v5i1.250039
Arshiya Verma, Mamta Devi Shrma, Ahmad Reza Khan, P. Mishra
The increasing demand for eco-friendly and sustainable methods in nanotechnology has shifted focus towards biological routes for synthesizing nanoparticles. This study highlights the green synthesis of silver nanoparticles (AgNPs) using the plant extract of Canna edulis, a process that avoids the use of hazardous chemicals. The synthesized AgNPs were characterized for their phytochemical content and evaluated for their antimicrobial properties. Canna edulis is an erect herbaceous perennial plant producing clumps of stems with large leaves. The present research was done on Canna edulis, where silver nanoparticles were prepared from the extract of leaves and petals. The leaf extracts showed a greater zone of inhibition against E. coli (18±2mm) followed by Salmonella spp. and Klebsiella spp. (17±1mm), then Pseudomonas spp. and Staphylococcus aureus (15±1mm). The petal extract of Canna edulis was more effective against Salmonella spp. and Pseudomonas spp. with a 15±3mm zone of inhibition followed by Staphylococcus aureus and Klebsiella spp. (14±2mm) and the E. coli (12±2mm). The characterization of nanoparticles of the extract showed the optimum density from which the maximum peak was obtained at 400nm for leaf and 420nm for the petal respectively. The phytochemical analysis of the leaf extract of Canna edulis concluded that alkaloids were present in good concentration whereas in petal extract flavonoids and phenolic compounds gave strong positive results.
{"title":"Sustainable synthesis of silver nanoparticles from Canna edulis for eco- friendly applications and their phytochemical and antimicrobial assessment","authors":"Arshiya Verma, Mamta Devi Shrma, Ahmad Reza Khan, P. Mishra","doi":"10.54279/mijeec.v5i1.250039","DOIUrl":"https://doi.org/10.54279/mijeec.v5i1.250039","url":null,"abstract":"\u0000\u0000\u0000The increasing demand for eco-friendly and sustainable methods in nanotechnology has shifted focus towards biological routes for synthesizing nanoparticles. This study highlights the green synthesis of silver nanoparticles (AgNPs) using the plant extract of Canna edulis, a process that avoids the use of hazardous chemicals. The synthesized AgNPs were characterized for their phytochemical content and evaluated for their antimicrobial properties. Canna edulis is an erect herbaceous perennial plant producing clumps of stems with large leaves. The present research was done on Canna edulis, where silver nanoparticles were prepared from the extract of leaves and petals. The leaf extracts showed a greater zone of inhibition against E. coli (18±2mm) followed by Salmonella spp. and Klebsiella spp. (17±1mm), then Pseudomonas spp. and Staphylococcus aureus (15±1mm). The petal extract of Canna edulis was more effective against Salmonella spp. and Pseudomonas spp. with a 15±3mm zone of inhibition followed by Staphylococcus aureus and Klebsiella spp. (14±2mm) and the E. coli (12±2mm). The characterization of nanoparticles of the extract showed the optimum density from which the maximum peak was obtained at 400nm for leaf and 420nm for the petal respectively. The phytochemical analysis of the leaf extract of Canna edulis concluded that alkaloids were present in good concentration whereas in petal extract flavonoids and phenolic compounds gave strong positive results.\u0000\u0000\u0000","PeriodicalId":18176,"journal":{"name":"Maejo International Journal of Energy and Environmental Communication","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84858569","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 : 2023-03-08DOI: 10.54279/mijeec.v5i1.250555
Saweit Chaimongkol, Supat Khongpuang, Chinnawat Pitagsalee, Amrin Thongwaan, K. Hangsapreurke
In the approach to optimize spotted babylon (Babylonia areolata) broodstock nutrition within hatchery environments, two distinct experiments were conducted. The first focused on broodstock, having an average weight of 43g. They were exposed to various natural feeds, with yellow stripe trevally being a notable inclusion, and they were kept at a density of 50 snails/m2. The following phase centered on juveniles, assessing the impact of replacing fishmeal with beef scraps and bonemeal in different proportions: 0%, 10%, 20%, and 30%. Yellow Stripe Trevally meat was used as a comparative control diet. These juveniles were kept at a density of 180 snails/m2. Both experimental groups were housed in standardized tanks, benefiting from a consistent 12-hour seawater supply daily. Through diligent monitoring, we observed that the trevally diet led to marked improvements in the growth and reproductive performance of the broodstock. On the other hand, for the juvenile group, the traditional diet was superior up to the 20% fishmeal substitution level. However, the growth rate diminished notably with a 30% substitution. Across the board, there was a consistent survival rate among all experimental groups. In sum, this study’s findings underscore the effectiveness of yellow stripe trevally as a potent feed for broodstock. Additionally, when considering juvenile diets, fishmeal substitution with beef and bonemeal should be approached cautiously, ideally at most 20%.
{"title":"Advancing spotted babylon broodstock performance and sustainable aquaculture practices through natural and formulated feeds","authors":"Saweit Chaimongkol, Supat Khongpuang, Chinnawat Pitagsalee, Amrin Thongwaan, K. Hangsapreurke","doi":"10.54279/mijeec.v5i1.250555","DOIUrl":"https://doi.org/10.54279/mijeec.v5i1.250555","url":null,"abstract":"\u0000\u0000\u0000In the approach to optimize spotted babylon (Babylonia areolata) broodstock nutrition within hatchery environments, two distinct experiments were conducted. The first focused on broodstock, having an average weight of 43g. They were exposed to various natural feeds, with yellow stripe trevally being a notable inclusion, and they were kept at a density of 50 snails/m2. The following phase centered on juveniles, assessing the impact of replacing fishmeal with beef scraps and bonemeal in different proportions: 0%, 10%, 20%, and 30%. Yellow Stripe Trevally meat was used as a comparative control diet. These juveniles were kept at a density of 180 snails/m2. Both experimental groups were housed in standardized tanks, benefiting from a consistent 12-hour seawater supply daily. Through diligent monitoring, we observed that the trevally diet led to marked improvements in the growth and reproductive performance of the broodstock. On the other hand, for the juvenile group, the traditional diet was superior up to the 20% fishmeal substitution level. However, the growth rate diminished notably with a 30% substitution. Across the board, there was a consistent survival rate among all experimental groups. In sum, this study’s findings underscore the effectiveness of yellow stripe trevally as a potent feed for broodstock. Additionally, when considering juvenile diets, fishmeal substitution with beef and bonemeal should be approached cautiously, ideally at most 20%.\u0000\u0000\u0000","PeriodicalId":18176,"journal":{"name":"Maejo International Journal of Energy and Environmental Communication","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82623143","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 : 2023-03-01DOI: 10.54279/mijeec.v5i1.250547
Sabarikirishwaran Ponnambalam, Pattranan Junluthin, R. Ramaraj, Y. Unpaprom
Dye-sensitized solar cells (DSSCs) have gained attention recently due to their potential in renewable energy. DSSCs explore natural dyes as an alternative to conventional ruthenium- based dyes. This study chose Ficus benjamina, a plant known for its rich pigment, as the natural dye source. The extraction process involved ethanol, methanol, and double distilled water. Using these solvents, we aimed to determine which solvent would be most effective in extracting the dye and ultimately enhancing the efficiency of the DSSCs. The efficiency (η) clocked in at 0.198%, with an open-circuit voltage (VOC) of 61.6 mV and a short-circuit current (ISC) of 0.424 mA for the F. benjamina dye. When compared to other solvents, methanol stood out distinctly. Specifically, the efficiency of the DSSC prepared with methanol-extracted dye improved by 15.67% when contrasted with the double distilled water and 11.05% when juxtaposed with ethanol. This study used a UV spectrophotometer to investigate the extracted dyes' characteristics. This instrument allowed us to meticulously analyzed the dyes’ absorption properties, providing further insights into their potential applications in DSSCs. Consequently, our research underscores the potential of natural dyes, particularly from F. benjamina, in DSSCs. The study can balance sustainability and efficiency in solar cell technology with the right solvent (methanol).
{"title":"Investigating the effect of solvent on the efficiency of natural pigment- based dye-sensitized solar cells","authors":"Sabarikirishwaran Ponnambalam, Pattranan Junluthin, R. Ramaraj, Y. Unpaprom","doi":"10.54279/mijeec.v5i1.250547","DOIUrl":"https://doi.org/10.54279/mijeec.v5i1.250547","url":null,"abstract":"\u0000\u0000\u0000Dye-sensitized solar cells (DSSCs) have gained attention recently due to their potential in renewable energy. DSSCs explore natural dyes as an alternative to conventional ruthenium- based dyes. This study chose Ficus benjamina, a plant known for its rich pigment, as the natural dye source. The extraction process involved ethanol, methanol, and double distilled water. Using these solvents, we aimed to determine which solvent would be most effective in extracting the dye and ultimately enhancing the efficiency of the DSSCs. The efficiency (η) clocked in at 0.198%, with an open-circuit voltage (VOC) of 61.6 mV and a short-circuit current (ISC) of 0.424 mA for the F. benjamina dye. When compared to other solvents, methanol stood out distinctly. Specifically, the efficiency of the DSSC prepared with methanol-extracted dye improved by 15.67% when contrasted with the double distilled water and 11.05% when juxtaposed with ethanol. This study used a UV spectrophotometer to investigate the extracted dyes' characteristics. This instrument allowed us to meticulously analyzed the dyes’ absorption properties, providing further insights into their potential applications in DSSCs. Consequently, our research underscores the potential of natural dyes, particularly from F. benjamina, in DSSCs. The study can balance sustainability and efficiency in solar cell technology with the right solvent (methanol).\u0000\u0000\u0000","PeriodicalId":18176,"journal":{"name":"Maejo International Journal of Energy and Environmental Communication","volume":"78 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74575103","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}
This research aimed to enhance and optimize the ultrasound-assisted extraction (UAE) of lutein from marigold flowers. The Response Surface Methodology (RSM) was the primary optimization technique. Three key independent variables were considered to determine the best conditions for the highest lutein yield: ultrasonic amplitude, extraction temperature, and extraction time. These variables were systematically varied following the Central Composite Design (CCD). Lutein quantitation was achieved using ultraviolet-visible spectrophotometry analysis. Using both the RSM and CCD frameworks, the study established specific ranges for the operational conditions: 21.6–38.4% for ultrasonic amplitude, 23.18–56.82 °C for extraction temperature and 3.18–36.82 minutes for extraction duration. The study determined the optimal extraction conditions to be 32.76% ultrasonic amplitude, 40.08 °C extraction temperature, and 25.82 minutes of extraction time. Under these optimized conditions, the experimental lutein yield closely matched the yield predicted by the RSM model, thus confirming the model's accuracy. The UAE demonstrated a notably superior lutein yield compared to traditional extraction techniques. The RSM is a robust tool for refining and determining optimal UAE conditions for lutein extraction from marigold flowers. With its efficiency, speed, and eco- friendliness, the optimized UAE technique presents significant potential for widespread industrial use.
{"title":"Enhancing lutein extraction from marigolds through ultrasound-assisted optimization using response surface methodology","authors":"Panthakant Janepinich, Chutimon Satirapipathkul, Naparat Kasetsomboon, Piyaphong Yongphet","doi":"10.54279/mijeec.v5i1.248359","DOIUrl":"https://doi.org/10.54279/mijeec.v5i1.248359","url":null,"abstract":"\u0000\u0000\u0000This research aimed to enhance and optimize the ultrasound-assisted extraction (UAE) of lutein from marigold flowers. The Response Surface Methodology (RSM) was the primary optimization technique. Three key independent variables were considered to determine the best conditions for the highest lutein yield: ultrasonic amplitude, extraction temperature, and extraction time. These variables were systematically varied following the Central Composite Design (CCD). Lutein quantitation was achieved using ultraviolet-visible spectrophotometry analysis. Using both the RSM and CCD frameworks, the study established specific ranges for the operational conditions: 21.6–38.4% for ultrasonic amplitude, 23.18–56.82 °C for extraction temperature and 3.18–36.82 minutes for extraction duration. The study determined the optimal extraction conditions to be 32.76% ultrasonic amplitude, 40.08 °C extraction temperature, and 25.82 minutes of extraction time. Under these optimized conditions, the experimental lutein yield closely matched the yield predicted by the RSM model, thus confirming the model's accuracy. The UAE demonstrated a notably superior lutein yield compared to traditional extraction techniques. The RSM is a robust tool for refining and determining optimal UAE conditions for lutein extraction from marigold flowers. With its efficiency, speed, and eco- friendliness, the optimized UAE technique presents significant potential for widespread industrial use.\u0000\u0000\u0000","PeriodicalId":18176,"journal":{"name":"Maejo International Journal of Energy and Environmental Communication","volume":"136 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76441166","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}
Manure decomposition from animal waste, including farm sludge, is a significant source of methane (CH4) and carbon dioxide (CO2) emissions, aggravating global warming. Addressing this issue is vital for the environment and pivotal in achieving sustainable development goals by combating pollution from agricultural activities. One promising solution is biogas production, which offers threefold benefits including mitigation of global warming, assurance of energy security, and efficient waste management. This can be achieved by optimizing the process using substrates that yield high biogas output while ensuring low water usage and retention. This study focuses on pig farms' biogas potential of liquid and solid manure fractions performed with laboratory-scale batch digesters and enhanced polyethylene tubular digesters for evaluation. From the screening system, the biogas output from pig slurry resulted in CH4 and CO2 in 45 days, achieving 61.44 and 36.35%, respectively. After the initial screening experiment, polyethylene tubular digesters were implemented for biogas production at household pig farms and produced through fermentation in polyethylene tubular digesters under anaerobic conditions and are mainly composed of CH4 (60–64%) and CO2 (29–38%). This study suggested that the pig slurry could be a reliable biomass energy source for biogas and applicable to householders.
{"title":"Revolutionizing biogas generation: Polyethylene tubular digesters for household pig farms","authors":"Vannasinh Souvannasouk, Oudtakhone Singthong, Phoukhanh Sayavongsa, Saneth Meas, Thanousinh Phaxaisithidet, Salongxay Fongsamouth","doi":"10.54279/mijeec.v5i1.250029","DOIUrl":"https://doi.org/10.54279/mijeec.v5i1.250029","url":null,"abstract":"\u0000\u0000\u0000Manure decomposition from animal waste, including farm sludge, is a significant source of methane (CH4) and carbon dioxide (CO2) emissions, aggravating global warming. Addressing this issue is vital for the environment and pivotal in achieving sustainable development goals by combating pollution from agricultural activities. One promising solution is biogas production, which offers threefold benefits including mitigation of global warming, assurance of energy security, and efficient waste management. This can be achieved by optimizing the process using substrates that yield high biogas output while ensuring low water usage and retention. This study focuses on pig farms' biogas potential of liquid and solid manure fractions performed with laboratory-scale batch digesters and enhanced polyethylene tubular digesters for evaluation. From the screening system, the biogas output from pig slurry resulted in CH4 and CO2 in 45 days, achieving 61.44 and 36.35%, respectively. After the initial screening experiment, polyethylene tubular digesters were implemented for biogas production at household pig farms and produced through fermentation in polyethylene tubular digesters under anaerobic conditions and are mainly composed of CH4 (60–64%) and CO2 (29–38%). This study suggested that the pig slurry could be a reliable biomass energy source for biogas and applicable to householders.\u0000\u0000\u0000","PeriodicalId":18176,"journal":{"name":"Maejo International Journal of Energy and Environmental Communication","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85070828","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 : 2023-01-20DOI: 10.54279/mijeec.v5i1.248275
K. M. Palanisamy, Obaid Ahmad Bhat, Natanamurugaraj Govindan, Mohd Hasbi Ab. Rahim, Gaanty Pragas Maniam
Light is the core environmental factor that affects the growth and biomass production of microalgae. However, the high density of microalgae will lead to reduction of the growth rate of microalgae culture due to availability of light decreases. Therefore, this experiment was conducted with aim of determining the influence of biomass density on growth of Spirulina platensis under different density of culture and LED lights. The result found that, the growth rate Spirulina platensis was reduced under high biomass density (9:1) due to lacking light penetration into the culture. However, white LED helps maintain the light acclimation process in the cells. Light spectra enhance the growth biomass. However white light contains all the light spectra highly contribute to the biomass production. The maximum light was penetrated into the culture due to minimal density of culture. More light was observed by the cells. Photosynthetic microalage may frequently experience irradiance fluctuations of one to two orders of magnitude in the natural environment. Microalgae have created several acclimation mechanisms to deal with such shifts.
{"title":"Impact of biomass density on growth rates of Spirulina platensis under different light spectra","authors":"K. M. Palanisamy, Obaid Ahmad Bhat, Natanamurugaraj Govindan, Mohd Hasbi Ab. Rahim, Gaanty Pragas Maniam","doi":"10.54279/mijeec.v5i1.248275","DOIUrl":"https://doi.org/10.54279/mijeec.v5i1.248275","url":null,"abstract":"Light is the core environmental factor that affects the growth and biomass production of microalgae. However, the high density of microalgae will lead to reduction of the growth rate of microalgae culture due to availability of light decreases. Therefore, this experiment was conducted with aim of determining the influence of biomass density on growth of Spirulina platensis under different density of culture and LED lights. The result found that, the growth rate Spirulina platensis was reduced under high biomass density (9:1) due to lacking light penetration into the culture. However, white LED helps maintain the light acclimation process in the cells. Light spectra enhance the growth biomass. However white light contains all the light spectra highly contribute to the biomass production. The maximum light was penetrated into the culture due to minimal density of culture. More light was observed by the cells. Photosynthetic microalage may frequently experience irradiance fluctuations of one to two orders of magnitude in the natural environment. Microalgae have created several acclimation mechanisms to deal with such shifts.","PeriodicalId":18176,"journal":{"name":"Maejo International Journal of Energy and Environmental Communication","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87171096","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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