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.
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Pub Date : 2024-05-01DOI: 10.12912/27197050/186187
Hicham Ouhakki, Kamal El Fallah, Nouredine El Mejdoub
This study aims to create complete surface water quality maps for the Oum Er Rabia watershed by predicting nitrate (NO 3) and water quality index (WQI) values at unsampled locations. Utilizing a combination of NO 3-, IQE data, and ArcGIS Pro software. Water samples were collected from 40 stations across the basin during twelve campaigns conducted in the winter and summer of 2021 and 2022. The database contains the analysis results of 12 parameters measured in 480 samples. The method used to model water quality is interpolation with ArcGIS Pro. The distribution map of nitrate values for all samples shows concentrations ranging from 0.26 to 38.89 mg/L. These values are lower than the admissible level recommended by the Moroccan standard for drinking water (50 mg/L). The resulting map of the modeling shows higher NO 3 - concentrations in summur than in winter. The resulting map of the WQI modeling shows that water quality is excellent in most of the Oum Er-Rbia watershed, with the majority of the area falling into the “good” and “excellent” categories. The water quality deterio-rates in certain parts, especially at stations SS3, SS4, SS5, SS8, and PS9, where the water is of poor quality. In the central and eastern parts, the presence of excessively high ammonium concentrations has significantly compromised the water quality, leading to heavy pollution. Exceeding Moroccan drinking water standards, these observed levels likely stem from human activities. Accurate water quality predictions with ArcGIS Pro require considering data quality, historical trends, and spatiotemporal variations. Understanding these limitations ensures responsible and effective tool use. The study concluded that water pollution could be due to proximity to industrial and urban areas. This study’s uniqueness lies in integrating the WQI, NO 3 -, and ArcGIS-Pro into maps. This approach makes information accessible to the public and useful for decision-makers to take action at all watershed points
本研究旨在通过预测未采样地点的硝酸盐（NO 3）和水质指数（WQI）值，为乌姆-埃尔-拉比亚流域绘制完整的地表水质图。结合使用 NO 3-、IQE 数据和 ArcGIS Pro 软件。在 2021 年和 2022 年的冬季和夏季开展的 12 次活动中，从整个流域的 40 个站点采集了水样。数据库包含 480 份样本中测得的 12 个参数的分析结果。建立水质模型的方法是使用 ArcGIS Pro 进行插值。所有样本的硝酸盐值分布图显示，浓度范围在 0.26 至 38.89 毫克/升之间。这些数值低于摩洛哥饮用水标准建议的允许水平（50 毫克/升）。模拟结果图显示，夏季的 NO 3 - 浓度高于冬季。水质指数模型的结果图显示，乌姆厄尔比亚流域大部分地区的水质优良，大部分地区的水质属于 "良 "和 "优 "类。某些地区的水质较差，尤其是 SS3、SS4、SS5、SS8 和 PS9 站的水质较差。在中部和东部地区，铵浓度过高严重影响了水质，导致严重污染。观测到的氨含量超过摩洛哥饮用水标准，很可能是人类活动造成的。使用 ArcGIS Pro 进行准确的水质预测需要考虑数据质量、历史趋势和时空变化。了解这些局限性可确保负责任和有效地使用工具。研究认为，水污染可能是由于靠近工业和城市地区造成的。这项研究的独特之处在于将 WQI、NO 3 - 和 ArcGIS-Pro 整合到地图中。这种方法使公众能够获取信息，并有助于决策者在所有流域点采取行动。
{"title":"Spatiotemporal Interpolation of Water Quality Index and Nitrates using ArcGIS Pro for Surface Water Quality Modeling in the Oum Er-Rabia Watershed","authors":"Hicham Ouhakki, Kamal El Fallah, Nouredine El Mejdoub","doi":"10.12912/27197050/186187","DOIUrl":"https://doi.org/10.12912/27197050/186187","url":null,"abstract":"This study aims to create complete surface water quality maps for the Oum Er Rabia watershed by predicting nitrate (NO 3) and water quality index (WQI) values at unsampled locations. Utilizing a combination of NO 3-, IQE data, and ArcGIS Pro software. Water samples were collected from 40 stations across the basin during twelve campaigns conducted in the winter and summer of 2021 and 2022. The database contains the analysis results of 12 parameters measured in 480 samples. The method used to model water quality is interpolation with ArcGIS Pro. The distribution map of nitrate values for all samples shows concentrations ranging from 0.26 to 38.89 mg/L. These values are lower than the admissible level recommended by the Moroccan standard for drinking water (50 mg/L). The resulting map of the modeling shows higher NO 3 - concentrations in summur than in winter. The resulting map of the WQI modeling shows that water quality is excellent in most of the Oum Er-Rbia watershed, with the majority of the area falling into the “good” and “excellent” categories. The water quality deterio-rates in certain parts, especially at stations SS3, SS4, SS5, SS8, and PS9, where the water is of poor quality. In the central and eastern parts, the presence of excessively high ammonium concentrations has significantly compromised the water quality, leading to heavy pollution. Exceeding Moroccan drinking water standards, these observed levels likely stem from human activities. Accurate water quality predictions with ArcGIS Pro require considering data quality, historical trends, and spatiotemporal variations. Understanding these limitations ensures responsible and effective tool use. The study concluded that water pollution could be due to proximity to industrial and urban areas. This study’s uniqueness lies in integrating the WQI, NO 3 -, and ArcGIS-Pro into maps. This approach makes information accessible to the public and useful for decision-makers to take action at all watershed points","PeriodicalId":448145,"journal":{"name":"Ecological Engineering & Environmental Technology","volume":"21 S13","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141049512","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}
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