Pub Date : 2024-05-01DOI: 10.12912/27197050/184264
Afaf Sahraoui, Raifa Bakali, Adil Sahraoui, Mohammed Ouhssine
Recycling biodegradable waste is one of the crucial stages in sustainable waste management. Recycling them for agricultural purposes can have a beneficial impact on environmental protection, with more organic amendment and fewer chemical fertilizers contaminating farmland and groundwater. This will support food production of the right nutritional quality, by increasing yields. The aim of this research was the biotechnological valorization of de-watered sludge as compost for agricultural soil fertilization. Compost was applied using the windrow method. The materials used for composting are dewatered sludge from the wastewater treatment plant, mixed with fillers, such as green and brown waste. The obtained results suggest that the finished products from heaps A, B and C show a significant level of stability. These results reinforce the viability of composting products as soil improvers, high - lighting their stability, effective disinfection and compliance with environmental standards. This study showed that the compost from dewatered sludge can be a promising alternative to the use of chemical fertilizers in agricultural crops, with a view to improving yields.
回收可生物降解废物是可持续废物管理的关键阶段之一。将可降解废物回收用于农业用途可对环境保护产生有利影响，因为这样可以增加有机肥料的用量，减少化肥对农田和地下水的污染。这将通过提高产量来支持具有适当营养质量的粮食生产。这项研究的目的是通过生物技术将脱水污泥作为堆肥用于农业土壤施肥。堆肥采用风车法。用于堆肥的材料是来自污水处理厂的脱水污泥，与绿色和褐色废物等填充物混合。结果表明，堆肥 A、B 和 C 的成品具有很高的稳定性。这些结果进一步证明了堆肥产品作为土壤改良剂的可行性，同时也说明其稳定性高、消毒效果好且符合环保标准。这项研究表明，从脱水污泥中提取的堆肥可以替代农作物中使用的化肥，从而提高产量。
{"title":"Quality Assessment of the Anaerobic Composting of Dehydrated Sludge from Wastewater Treatment Plant for Agriculture Application","authors":"Afaf Sahraoui, Raifa Bakali, Adil Sahraoui, Mohammed Ouhssine","doi":"10.12912/27197050/184264","DOIUrl":"https://doi.org/10.12912/27197050/184264","url":null,"abstract":"Recycling biodegradable waste is one of the crucial stages in sustainable waste management. Recycling them for agricultural purposes can have a beneficial impact on environmental protection, with more organic amendment and fewer chemical fertilizers contaminating farmland and groundwater. This will support food production of the right nutritional quality, by increasing yields. The aim of this research was the biotechnological valorization of de-watered sludge as compost for agricultural soil fertilization. Compost was applied using the windrow method. The materials used for composting are dewatered sludge from the wastewater treatment plant, mixed with fillers, such as green and brown waste. The obtained results suggest that the finished products from heaps A, B and C show a significant level of stability. These results reinforce the viability of composting products as soil improvers, high - lighting their stability, effective disinfection and compliance with environmental standards. This study showed that the compost from dewatered sludge can be a promising alternative to the use of chemical fertilizers in agricultural crops, with a view to improving yields.","PeriodicalId":448145,"journal":{"name":"Ecological Engineering & Environmental Technology","volume":"14 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141028994","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 : 2024-05-01DOI: 10.12912/27197050/185709
Vitalii Kovalenko, O. Tonkha, Mychailo I. Fedorchuk, A. Butenko, V. Toryanik, G. Davydenko, Roman Bordun, Serhii Kharchenko, Anton Polyvanyi
The significance of this study stems from the imperative to justify and advance agrobiological foundations aimed at enhancing the cultivation practices of Onobrychis viciifolia . There exists a compelling necessity to refine agronomic methodologies and streamline their comprehensive efficacy within the technological phases of cultivation. This study is aim to provide a critical analysis of scientific problem of substantiation of biological and organic foundations of the technology of Onobrychis viciifolia growing. Innovative technological interventions were formulated by extrapolat - ing discerned patterns of influence pertaining to climatic and meteorological factors. Patterns governing the growth, development, and productivity formation of Onobrychis viciifolia were identified, and both the theoretical and practi - cal principles of contemporary methods for cultivating perennial legumes were established. The chemical compound of aboveground biomass of Onobrychis viciifolia is varied depending on researched factors. Fertilization practically did not increase the productivity of Onobrychis viciifolia . The natural fertility of low-humus chernozem soil ensures the formation of a high, stable yield without fertilizing. This is the evidence that Onobrychis viciifolia compares favorably with other perennial legumes. Due to its biological characteristics, it is much more effective, especially in leveraging natural factors for the yield formation, i.e., it plays a significant role in the biologization of plant produc - tion, and in obtaining the most environmentally friendly, high–quality, yet cheap feed. The outcomes derived from the conducted research indicate that, under uniform soil conditions and varying fertilizer levels, the mowing height emerges as the predominant factor. The highest concentrations of nutrients within the overground biomass of Onobry-chis viciifolia were noted at a cutting altitude of 11 centimeters. Concurrently, an elevation in crude protein and ash content was observed, accompanied by a concomitant reduction in the index of crude fiber
{"title":"The Influence of Elements of Technology and Soil-Dimatic Factors on the Agrobiological Properties of Onobrychis viciifolia","authors":"Vitalii Kovalenko, O. Tonkha, Mychailo I. Fedorchuk, A. Butenko, V. Toryanik, G. Davydenko, Roman Bordun, Serhii Kharchenko, Anton Polyvanyi","doi":"10.12912/27197050/185709","DOIUrl":"https://doi.org/10.12912/27197050/185709","url":null,"abstract":"The significance of this study stems from the imperative to justify and advance agrobiological foundations aimed at enhancing the cultivation practices of Onobrychis viciifolia . There exists a compelling necessity to refine agronomic methodologies and streamline their comprehensive efficacy within the technological phases of cultivation. This study is aim to provide a critical analysis of scientific problem of substantiation of biological and organic foundations of the technology of Onobrychis viciifolia growing. Innovative technological interventions were formulated by extrapolat - ing discerned patterns of influence pertaining to climatic and meteorological factors. Patterns governing the growth, development, and productivity formation of Onobrychis viciifolia were identified, and both the theoretical and practi - cal principles of contemporary methods for cultivating perennial legumes were established. The chemical compound of aboveground biomass of Onobrychis viciifolia is varied depending on researched factors. Fertilization practically did not increase the productivity of Onobrychis viciifolia . The natural fertility of low-humus chernozem soil ensures the formation of a high, stable yield without fertilizing. This is the evidence that Onobrychis viciifolia compares favorably with other perennial legumes. Due to its biological characteristics, it is much more effective, especially in leveraging natural factors for the yield formation, i.e., it plays a significant role in the biologization of plant produc - tion, and in obtaining the most environmentally friendly, high–quality, yet cheap feed. The outcomes derived from the conducted research indicate that, under uniform soil conditions and varying fertilizer levels, the mowing height emerges as the predominant factor. The highest concentrations of nutrients within the overground biomass of Onobry-chis viciifolia were noted at a cutting altitude of 11 centimeters. Concurrently, an elevation in crude protein and ash content was observed, accompanied by a concomitant reduction in the index of crude fiber","PeriodicalId":448145,"journal":{"name":"Ecological Engineering & Environmental Technology","volume":"45 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141041185","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 : 2024-05-01DOI: 10.12912/27197050/184238
Alexander Marwa
As the transportation sector develops and urbanization increases, so does the demand for automobiles and work-shop or garage services. During maintenance or workshop activities, oil may be discharged into the environment, leading to oil-contaminated soil. This study focused on optimizing the use of local organic waste to improve the bioremediation of oil-contaminated soil. The concentration of oil-contaminated soil was mixed with various organic wastes (cow manure, chicken droppings, and sewage sludge) in different ratios of organic waste (R1 100 g, R2 200 g, R3 300 g) combined with 1000 g of soil for a 56-day bioremediation trial. The results showed that the oil-contaminated soil in the case study area varied from 96.07 mg·kg -1 to 123.11 mg·kg -1 . Organic wastes used contained higher levels of organic carbon, nitrogen, and phosphorus compared to the oil-contaminated soil. After 56 days, the treated soil exhibited a reduction of oil contamination by 66.9% with cow manure (CM), 61.6% with sewer sludge (SS), and 79.2% with chicken droppings (CD). The soil mixed with CD had the highest bacterial count (35·10 6 CFU·g -1 ), while the soil mixed with SS had the lowest bacterial count (22·10 6 CFU·g -1 ). Optimal bacterial counts were observed over the 35-day experiment, followed by a decrease in bacterial counts in all reactors. This study demonstrated that the promising technology of utilizing local organic waste has the potential to enhance bioremediation in oil-contaminated soil.
{"title":"Influence of Organic Waste on Bioremediation of Oil-Contaminated Soil","authors":"Alexander Marwa","doi":"10.12912/27197050/184238","DOIUrl":"https://doi.org/10.12912/27197050/184238","url":null,"abstract":"As the transportation sector develops and urbanization increases, so does the demand for automobiles and work-shop or garage services. During maintenance or workshop activities, oil may be discharged into the environment, leading to oil-contaminated soil. This study focused on optimizing the use of local organic waste to improve the bioremediation of oil-contaminated soil. The concentration of oil-contaminated soil was mixed with various organic wastes (cow manure, chicken droppings, and sewage sludge) in different ratios of organic waste (R1 100 g, R2 200 g, R3 300 g) combined with 1000 g of soil for a 56-day bioremediation trial. The results showed that the oil-contaminated soil in the case study area varied from 96.07 mg·kg -1 to 123.11 mg·kg -1 . Organic wastes used contained higher levels of organic carbon, nitrogen, and phosphorus compared to the oil-contaminated soil. After 56 days, the treated soil exhibited a reduction of oil contamination by 66.9% with cow manure (CM), 61.6% with sewer sludge (SS), and 79.2% with chicken droppings (CD). The soil mixed with CD had the highest bacterial count (35·10 6 CFU·g -1 ), while the soil mixed with SS had the lowest bacterial count (22·10 6 CFU·g -1 ). Optimal bacterial counts were observed over the 35-day experiment, followed by a decrease in bacterial counts in all reactors. This study demonstrated that the promising technology of utilizing local organic waste has the potential to enhance bioremediation in oil-contaminated soil.","PeriodicalId":448145,"journal":{"name":"Ecological Engineering & Environmental Technology","volume":"38 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141024855","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 : 2024-05-01DOI: 10.12912/27197050/185883
Amine Chaïeb, Mourad Arabi, Oumaima Gamagami, Said Benyoussef, A. Aknaf, A. Moumen
As climate change continues to present daunting obstacles in the eastern region of Morocco, the reuse of treated wastewater has emerged as a vital solution for combating water scarcity, particularly for irrigation purposes. This investigation delves into the implications of reusing treated wastewater along the seasonal Isly River, with a specific fo - cus on its downstream area, commonly referred to as “Oued Bou Naim”. A comprehensive campaign was conducted in 2023 to analyse the physicochemical quality of 12 water samples from Oued Bou Naim and 13 soil samples from nearby agricultural plots. The findings from the water analysis show a marginal increase in temperature downstream from the wastewater treatment plant (WWTP) in Oujda, ranging from 19.0 °C to 24.8 °C . The pH varied between 7.08 and 8.33 and generally remained within acceptable limits. However, the electrical conductivity levels, ranging from 2154 to 2898 μS · cm⁻¹, exceeded WHO standards, indicating potential risks to the soil‒plant‒health ecosystem. Additionally, the total dissolved solids increased significantly downstream from the WWTP, reaching 1437 mg · l⁻¹. For the nitrites, a level exceeding the limits, especially upstream, had an average of 2.03 and a maximum of 5.48 mg · l⁻¹. Upon studying the soil samples, a substantial increase in orthophosphates, nitrites, and nitrates was observed downstream. Orthophosphate levels increased significantly downstream, with an average of 361.25 mg · kg⁻¹, indi - cating the contribution of treated wastewater. The nitrite concentration (average of 11.61 mg · kg⁻¹) and nitrate level (average of 60 mg · kg⁻¹) raise concerns regarding contamination through irrigation with treated wastewater. This re - search highlights the critical need for responsible irrigation practices to safeguard the delicate balance of the “Water-Soil-Plant” ecosystem and the well-being of humans. Although wastewater treatment plants play an important role, the presence of high levels of harmful pollutants downstream emphasizes the urgent need to carefully manage this treatment combined with the reasonable use of agrochemical inputs to prevent their leaching into nearby ecosystems. By doing so, we can effectively reduce the risks to both the ecosystem and human health in the study region.
{"title":"Assessing the Environmental Impacts of Treated Wastewater Reuse on Water-Soil-Plant Ecosystems in Oued Bou Naim, Eastern Morocco","authors":"Amine Chaïeb, Mourad Arabi, Oumaima Gamagami, Said Benyoussef, A. Aknaf, A. Moumen","doi":"10.12912/27197050/185883","DOIUrl":"https://doi.org/10.12912/27197050/185883","url":null,"abstract":"As climate change continues to present daunting obstacles in the eastern region of Morocco, the reuse of treated wastewater has emerged as a vital solution for combating water scarcity, particularly for irrigation purposes. This investigation delves into the implications of reusing treated wastewater along the seasonal Isly River, with a specific fo - cus on its downstream area, commonly referred to as “Oued Bou Naim”. A comprehensive campaign was conducted in 2023 to analyse the physicochemical quality of 12 water samples from Oued Bou Naim and 13 soil samples from nearby agricultural plots. The findings from the water analysis show a marginal increase in temperature downstream from the wastewater treatment plant (WWTP) in Oujda, ranging from 19.0 °C to 24.8 °C . The pH varied between 7.08 and 8.33 and generally remained within acceptable limits. However, the electrical conductivity levels, ranging from 2154 to 2898 μS · cm⁻¹, exceeded WHO standards, indicating potential risks to the soil‒plant‒health ecosystem. Additionally, the total dissolved solids increased significantly downstream from the WWTP, reaching 1437 mg · l⁻¹. For the nitrites, a level exceeding the limits, especially upstream, had an average of 2.03 and a maximum of 5.48 mg · l⁻¹. Upon studying the soil samples, a substantial increase in orthophosphates, nitrites, and nitrates was observed downstream. Orthophosphate levels increased significantly downstream, with an average of 361.25 mg · kg⁻¹, indi - cating the contribution of treated wastewater. The nitrite concentration (average of 11.61 mg · kg⁻¹) and nitrate level (average of 60 mg · kg⁻¹) raise concerns regarding contamination through irrigation with treated wastewater. This re - search highlights the critical need for responsible irrigation practices to safeguard the delicate balance of the “Water-Soil-Plant” ecosystem and the well-being of humans. Although wastewater treatment plants play an important role, the presence of high levels of harmful pollutants downstream emphasizes the urgent need to carefully manage this treatment combined with the reasonable use of agrochemical inputs to prevent their leaching into nearby ecosystems. By doing so, we can effectively reduce the risks to both the ecosystem and human health in the study region.","PeriodicalId":448145,"journal":{"name":"Ecological Engineering & Environmental Technology","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141048706","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 : 2024-05-01DOI: 10.12912/27197050/186124
Lucie Oravová, Jan Snow, Jitka Tolaszová, Dominik Pilnaj, Pavol Midula, Janka Ševčíková, Pavel Kuráň
Occurrence, distribution, and toxicity assessment of 16 Polycyclic Aromatic Hydrocarbons (PAHs) prioritized by the US Environmental Protection Agency in pyrolysis products – pyrolysis oil and pyrolysis wax – of differ - ent plastics are characterized. PP, HDPE, LDPE, PVC, PS (respectively, polypropylene, high-and low-density polyethylene, polyvinylchloride and polystyrene) and their mixture named 5P are chosen as a feed material for pyrolysis. Pyrolysis process is carried out in a custom-built laboratory batch reactor with the pyrolysis temperature of 450 °C for PP, PVC, PS and 500 °C for HDPE and LDPE. 5P mixture is pyrolyzed at 500 and 700 °C. PAHs quantification is used to determine the toxicity equivalency quantity TEQ (BaP) for each pyrolysis product and to establish the degree of toxicity. The highest total concentration of 16 PAHs in pyrolysis oil is found to decrease in the order of PVC > PP > PS > LDPE > HDPE. According to TEQ (BaP), the toxicity of the most toxic pyrolysis oils correlates with the aforementioned order of the total concentration, i.e., being lowest for HPDE and highest for PVC. For pyrolysis wax, the highest total concentration of 16 PAHs is for PVC > PS > LDPE > PP > HDPE, while TEQ (BaP) value decreases as PVC > LDPE > PP > PS > HDPE. The PAHs concentration and TEQ (BaP) values of 5P mixture show similar trends in both products (oil, wax), i.e., they both increase with increasing pyrolysis temperature.
{"title":"Polycyclic Aromatic Hydrocarbons Formed During the Pyrolysis Process of Plastics – Characterization, Quantification and Risk Assessment","authors":"Lucie Oravová, Jan Snow, Jitka Tolaszová, Dominik Pilnaj, Pavol Midula, Janka Ševčíková, Pavel Kuráň","doi":"10.12912/27197050/186124","DOIUrl":"https://doi.org/10.12912/27197050/186124","url":null,"abstract":"Occurrence, distribution, and toxicity assessment of 16 Polycyclic Aromatic Hydrocarbons (PAHs) prioritized by the US Environmental Protection Agency in pyrolysis products – pyrolysis oil and pyrolysis wax – of differ - ent plastics are characterized. PP, HDPE, LDPE, PVC, PS (respectively, polypropylene, high-and low-density polyethylene, polyvinylchloride and polystyrene) and their mixture named 5P are chosen as a feed material for pyrolysis. Pyrolysis process is carried out in a custom-built laboratory batch reactor with the pyrolysis temperature of 450 °C for PP, PVC, PS and 500 °C for HDPE and LDPE. 5P mixture is pyrolyzed at 500 and 700 °C. PAHs quantification is used to determine the toxicity equivalency quantity TEQ (BaP) for each pyrolysis product and to establish the degree of toxicity. The highest total concentration of 16 PAHs in pyrolysis oil is found to decrease in the order of PVC > PP > PS > LDPE > HDPE. According to TEQ (BaP), the toxicity of the most toxic pyrolysis oils correlates with the aforementioned order of the total concentration, i.e., being lowest for HPDE and highest for PVC. For pyrolysis wax, the highest total concentration of 16 PAHs is for PVC > PS > LDPE > PP > HDPE, while TEQ (BaP) value decreases as PVC > LDPE > PP > PS > HDPE. The PAHs concentration and TEQ (BaP) values of 5P mixture show similar trends in both products (oil, wax), i.e., they both increase with increasing pyrolysis temperature.","PeriodicalId":448145,"journal":{"name":"Ecological Engineering & Environmental Technology","volume":"18 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141053744","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 : 2024-05-01DOI: 10.12912/27197050/184032
Nora Salim, Ilias Oussif, N. Hamamouch, Nadya Wahid
Environmental effects are determining factors for the activity of the antioxidant compounds and fruit form. Sam - ples of M. communis , originating from two biogeographically different zones in Morocco, were collected to study the variation in fruit size, fruit extract yield, and content of antioxidant compounds and activity of fruit extract and to examine its association with provenance environmental effect. Analysis of the results shows significant effect of provenance and environmental factors of several traits studied except anthocyanin compounds and IC50. The high content of polyphenols, flavonoids, and extract yield are associated with less watered and warm sites, and with low altitudes. Also, selection for one of the traits of fruit size and/or extract yield could favor selection for one of the phytochemicals. The aggregation of the populations studied using traits studied identify three main groups. These results are interesting for the selection of elite natural populations in favor of programs to promote this species for applications in the food, therapeutic, pharmaceutical and
{"title":"Comparative Study of Antioxidants in Methanolic Extracts Fruit of Natural Populations of Myrtus communis L. in Morocco in Relation to Fruit Size and Environmental Effects","authors":"Nora Salim, Ilias Oussif, N. Hamamouch, Nadya Wahid","doi":"10.12912/27197050/184032","DOIUrl":"https://doi.org/10.12912/27197050/184032","url":null,"abstract":"Environmental effects are determining factors for the activity of the antioxidant compounds and fruit form. Sam - ples of M. communis , originating from two biogeographically different zones in Morocco, were collected to study the variation in fruit size, fruit extract yield, and content of antioxidant compounds and activity of fruit extract and to examine its association with provenance environmental effect. Analysis of the results shows significant effect of provenance and environmental factors of several traits studied except anthocyanin compounds and IC50. The high content of polyphenols, flavonoids, and extract yield are associated with less watered and warm sites, and with low altitudes. Also, selection for one of the traits of fruit size and/or extract yield could favor selection for one of the phytochemicals. The aggregation of the populations studied using traits studied identify three main groups. These results are interesting for the selection of elite natural populations in favor of programs to promote this species for applications in the food, therapeutic, pharmaceutical and","PeriodicalId":448145,"journal":{"name":"Ecological Engineering & Environmental Technology","volume":"20 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141044726","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 : 2024-05-01DOI: 10.12912/27197050/186182
Ihal A. Abed, Basma I. Waisi
This study describes the modification of a polyethersulfone (PES)-based membrane by embedding titanium di - oxide ( TiO 2 ) nanoparticles. The prepared composite membranes are then characterized and applied for melechate green dye (MG) filtration from water to asses its filtering capabilities. The effect of TiO 2 contents on the morphology and filtration performance of the prepared composite membranes was evaluated by Fourier transform infrared (FTIR), scanning electron microscopy (SEM) and atomic force microscopy (AFM) analysis. The blended mem - branes displayed improved water permeability and dye rejection compared to the plain PES. The membrane char - acterization results showed that compared to the plain PES membrane, the porosity of pure membrane increased (from 15.1% to 34.7%) with increasing the percentage of the embedded TiO 2 . Then, the optical performance of the prepared membranes was examined in a cross-flow filtration system to separate MG dye from water. The filtration experiments showed that the composite PES/TiO 2 membrane of 1.5 wt.% TiO 2 has the best separation performance (permeate flux of 45 L/m 2 .hr and dye removal efficiency of 80%)
本研究介绍了通过嵌入二氧化钛（TiO 2）纳米颗粒对基于聚醚砜（PES）的膜进行改性的方法。然后对制备的复合膜进行了表征，并将其用于过滤水中的甲基绿染料（MG），以评估其过滤能力。傅立叶变换红外（FTIR）、扫描电子显微镜（SEM）和原子力显微镜（AFM）分析评估了 TiO 2 含量对制备的复合膜的形态和过滤性能的影响。与普通聚醚砜相比，混合膜的透水性和染料阻隔性都有所提高。膜炭化结果表明，与普通 PES 膜相比，纯膜的孔隙率随着嵌入 TiO 2 的比例增加而增加（从 15.1% 增加到 34.7%）。然后，在横流过滤系统中检测了所制备膜的光学性能，以分离水中的 MG 染料。过滤实验表明，TiO 2 含量为 1.5 wt.% 的 PES/TiO 2 复合膜的分离性能最好（渗透通量为 45 L/m 2 .hr，染料去除率为 80%）。
{"title":"Performance Enhancement of Polyethersulfone-Based Ultrafiltration Membrane Decorated by Titanium Dioxide Nanoparticles for Dye Filtration","authors":"Ihal A. Abed, Basma I. Waisi","doi":"10.12912/27197050/186182","DOIUrl":"https://doi.org/10.12912/27197050/186182","url":null,"abstract":"This study describes the modification of a polyethersulfone (PES)-based membrane by embedding titanium di - oxide ( TiO 2 ) nanoparticles. The prepared composite membranes are then characterized and applied for melechate green dye (MG) filtration from water to asses its filtering capabilities. The effect of TiO 2 contents on the morphology and filtration performance of the prepared composite membranes was evaluated by Fourier transform infrared (FTIR), scanning electron microscopy (SEM) and atomic force microscopy (AFM) analysis. The blended mem - branes displayed improved water permeability and dye rejection compared to the plain PES. The membrane char - acterization results showed that compared to the plain PES membrane, the porosity of pure membrane increased (from 15.1% to 34.7%) with increasing the percentage of the embedded TiO 2 . Then, the optical performance of the prepared membranes was examined in a cross-flow filtration system to separate MG dye from water. The filtration experiments showed that the composite PES/TiO 2 membrane of 1.5 wt.% TiO 2 has the best separation performance (permeate flux of 45 L/m 2 .hr and dye removal efficiency of 80%)","PeriodicalId":448145,"journal":{"name":"Ecological Engineering & Environmental Technology","volume":"32 18","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141030221","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 : 2024-05-01DOI: 10.12912/27197050/185934
Riad Mollik Babu, Enamul Basher
As the global quest for sustainable energy solutions intensifies, the role of solar power plants in meeting energy de - mands while mitigating environmental impact becomes increasingly vital. This study focuses on the performance evaluation and economic analysis of Engreen Sarishabari Solar Plant Ltd., a 3.3 MW grid-connected photovoltaic (PV) power plant located in Sarishabari, Jamalpur, Bangladesh. A thorough evaluation of the solar power plant’s performance ratio was carried out using the PVsyst software and data supplied by plant authorities. Moreover, a mathematical model was developed to analyze energy output variations, while grid stability post-integration of PV into the distribution feeder was examined under diverse conditions, including load and irradiance variations, as well as different short-circuit fault scenarios. The findings reveal that the annual performance ratio of the solar power plant stands at approximately 71%, with an average annual energy production of 3132 MWh. With a pay-back period of 10.1 years and an energy generating cost per kWh of 0.1132 USD, the installation cost came to 6,740,853 USD. This research not only provides valuable insights into the operational efficiency and economic viability of the Engreen Sarishabari Solar Plant Ltd. but also contributes to the broader discourse on the integration of solar energy into the grid infrastructure of Bangladesh, offering practical implications for policymakers, energy stakeholders, and investors striving towards a sustainable energy future.
{"title":"Performance Evaluation and Economic Analysis of a Grid-Connected Solar Power Plant: A Case Study of Engreen Sarishabari Solar Plant Ltd. in Bangladesh","authors":"Riad Mollik Babu, Enamul Basher","doi":"10.12912/27197050/185934","DOIUrl":"https://doi.org/10.12912/27197050/185934","url":null,"abstract":"As the global quest for sustainable energy solutions intensifies, the role of solar power plants in meeting energy de - mands while mitigating environmental impact becomes increasingly vital. This study focuses on the performance evaluation and economic analysis of Engreen Sarishabari Solar Plant Ltd., a 3.3 MW grid-connected photovoltaic (PV) power plant located in Sarishabari, Jamalpur, Bangladesh. A thorough evaluation of the solar power plant’s performance ratio was carried out using the PVsyst software and data supplied by plant authorities. Moreover, a mathematical model was developed to analyze energy output variations, while grid stability post-integration of PV into the distribution feeder was examined under diverse conditions, including load and irradiance variations, as well as different short-circuit fault scenarios. The findings reveal that the annual performance ratio of the solar power plant stands at approximately 71%, with an average annual energy production of 3132 MWh. With a pay-back period of 10.1 years and an energy generating cost per kWh of 0.1132 USD, the installation cost came to 6,740,853 USD. This research not only provides valuable insights into the operational efficiency and economic viability of the Engreen Sarishabari Solar Plant Ltd. but also contributes to the broader discourse on the integration of solar energy into the grid infrastructure of Bangladesh, offering practical implications for policymakers, energy stakeholders, and investors striving towards a sustainable energy future.","PeriodicalId":448145,"journal":{"name":"Ecological Engineering & Environmental Technology","volume":"69 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141033991","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 : 2024-05-01DOI: 10.12912/27197050/185737
N. Beithou, Mohammad Bani Khalid, S. As’ad, Hani Attar, M. Al-Khawaldeh, G. Borowski, Khalid S. Rababa, Artur Andruszkiewicz, Sameh Alsaqoor
Thermal comfort in openair situations is a difficult industrial task. In literature there were insufficient studies on how to control the external microclimate in a region
露天环境下的热舒适是一项艰巨的工业任务。文献中关于如何控制区域外部小气候的研究不足。
{"title":"Microclimate Thermal Control for Open-Air Areas","authors":"N. Beithou, Mohammad Bani Khalid, S. As’ad, Hani Attar, M. Al-Khawaldeh, G. Borowski, Khalid S. Rababa, Artur Andruszkiewicz, Sameh Alsaqoor","doi":"10.12912/27197050/185737","DOIUrl":"https://doi.org/10.12912/27197050/185737","url":null,"abstract":"Thermal comfort in openair situations is a difficult industrial task. In literature there were insufficient studies on how to control the external microclimate in a region","PeriodicalId":448145,"journal":{"name":"Ecological Engineering & Environmental Technology","volume":"11 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141054770","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 : 2024-05-01DOI: 10.12912/27197050/186126
T.O. Rozhkova, A. Burdulanyuk, V. Tatarynova, O. Yemets, V. Demenko, Yuriy Spychak, Viktor Pivtoraiko, Olha Bakumenko, Yelyzaveta Rozhkova
The peculiarities of the primary visual inspection of winter wheat seeds are considered. In the North-East of Ukraine, three groups of abnormal seeds (wrinkled, small seeds, and with a black point) were being identified by macroanalysis during 2017–2022. Factors affecting the representation of these groups in the samples were ana - lyzed. It was determined that the amount of abnormal seeds is determined by the growing conditions of wheat, the place of cultivation and spraying of wheat with fungicides. The maximum number of substandard seeds was noted in Polissia, where black point dominated. In the Forest-steppe, the largest amount of such seeds was recorded in 2022, among which small seeds prevailed. A study of the characteristics of the manifestation of a black point showed that the blackening of the embryo occurs only from above. A seed with a black point is usually mature. For the first time, it was proven that spraying plants with essential oils of cinnamon and fennel leads to an increase in the appearance of the black point, which once again confirms its abiotic nature. The study of the germination of externally healthy and abnormal seeds of the Bohdana variety of the 2018 and 2019 harvests under conditions of low temperature and over moistening showed better indicators for the first group. But the germination of abnormal seeds had contradictory results, especially in different years. Comparison of the germination and development of seedlings from healthy and blackening seeds under favorable conditions during different periods of storage of wheat samples, from different places of cultivation, on different genotypes gave new unexpected results: higher in - dicators in the variant with black point. During further study in conditions of low temperature, which is explained by very late sowing of winter wheat in recent years in Ukraine, completely different data were obtained. Seed germination was better in healthy seeds. Seedlings developed faster at first also from healthy seeds, but on the last two dates of measurement, they began to grow faster from seeds with black point.
{"title":"Macroanalysis of Winter Wheat Seeds and Features of their Germination","authors":"T.O. Rozhkova, A. Burdulanyuk, V. Tatarynova, O. Yemets, V. Demenko, Yuriy Spychak, Viktor Pivtoraiko, Olha Bakumenko, Yelyzaveta Rozhkova","doi":"10.12912/27197050/186126","DOIUrl":"https://doi.org/10.12912/27197050/186126","url":null,"abstract":"The peculiarities of the primary visual inspection of winter wheat seeds are considered. In the North-East of Ukraine, three groups of abnormal seeds (wrinkled, small seeds, and with a black point) were being identified by macroanalysis during 2017–2022. Factors affecting the representation of these groups in the samples were ana - lyzed. It was determined that the amount of abnormal seeds is determined by the growing conditions of wheat, the place of cultivation and spraying of wheat with fungicides. The maximum number of substandard seeds was noted in Polissia, where black point dominated. In the Forest-steppe, the largest amount of such seeds was recorded in 2022, among which small seeds prevailed. A study of the characteristics of the manifestation of a black point showed that the blackening of the embryo occurs only from above. A seed with a black point is usually mature. For the first time, it was proven that spraying plants with essential oils of cinnamon and fennel leads to an increase in the appearance of the black point, which once again confirms its abiotic nature. The study of the germination of externally healthy and abnormal seeds of the Bohdana variety of the 2018 and 2019 harvests under conditions of low temperature and over moistening showed better indicators for the first group. But the germination of abnormal seeds had contradictory results, especially in different years. Comparison of the germination and development of seedlings from healthy and blackening seeds under favorable conditions during different periods of storage of wheat samples, from different places of cultivation, on different genotypes gave new unexpected results: higher in - dicators in the variant with black point. During further study in conditions of low temperature, which is explained by very late sowing of winter wheat in recent years in Ukraine, completely different data were obtained. Seed germination was better in healthy seeds. Seedlings developed faster at first also from healthy seeds, but on the last two dates of measurement, they began to grow faster from seeds with black point.","PeriodicalId":448145,"journal":{"name":"Ecological Engineering & Environmental Technology","volume":"26 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141050442","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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