Natural gas used widely in terms of energy production. Energy production is among the most prominent sectors of humankind. Combustion processes inevitably produces air pollutants. The major pollutant during a combustion process is nitrogen oxide emissions. The term of nitrogen oxides primarily include nitrogen monoxide and nitrogen dioxide. These pollutants are generated regardless of the fuel content since air composition itself is the major source for these pollutants. It is possible to calculate emissions through the activity data and emission factors. Calculation of emissions is not enough for an environmental assessment. The impact of pollutants on human health relies on their concentration in the atmosphere. In order to determine their concentrations several modelling practices are developed. In this study, AERMOD used for modelling purpose of NOx emissions from a liquefied natural gas facility. It was observed that the pollutants were dispersed mostly towards south-southwest of the facility, where Marmaraereğlisi district is located. Although the pollutants transported directly to the settlement, the concentrations remained limited. During operation conditions, the highest daily NOx concentration was 1.7 μg/m3 and the highest annual concentration was 0.1 μg/m3. At maximum operating conditions, the highest daily NOx concentration was 16.2 μg/m3 and the highest annual concentration was 2.5 μg/m3. At minimum operating conditions, the highest daily NOx concentration was 1.1 μg/m3 and the highest annual concentration was 0.2 μg/m3.
{"title":"Dispersion Model of NOx Emissions from a Liquefied Natural Gas Facility","authors":"İlker Türkyilmaz, S. Kuzu","doi":"10.35208/ert.1417201","DOIUrl":"https://doi.org/10.35208/ert.1417201","url":null,"abstract":"Natural gas used widely in terms of energy production. Energy production is among the most prominent sectors of humankind. Combustion processes inevitably produces air pollutants. The major pollutant during a combustion process is nitrogen oxide emissions. The term of nitrogen oxides primarily include nitrogen monoxide and nitrogen dioxide. These pollutants are generated regardless of the fuel content since air composition itself is the major source for these pollutants. It is possible to calculate emissions through the activity data and emission factors. Calculation of emissions is not enough for an environmental assessment. The impact of pollutants on human health relies on their concentration in the atmosphere. In order to determine their concentrations several modelling practices are developed. In this study, AERMOD used for modelling purpose of NOx emissions from a liquefied natural gas facility. It was observed that the pollutants were dispersed mostly towards south-southwest of the facility, where Marmaraereğlisi district is located. Although the pollutants transported directly to the settlement, the concentrations remained limited. During operation conditions, the highest daily NOx concentration was 1.7 μg/m3 and the highest annual concentration was 0.1 μg/m3. At maximum operating conditions, the highest daily NOx concentration was 16.2 μg/m3 and the highest annual concentration was 2.5 μg/m3. At minimum operating conditions, the highest daily NOx concentration was 1.1 μg/m3 and the highest annual concentration was 0.2 μg/m3.","PeriodicalId":126818,"journal":{"name":"Environmental Research and Technology","volume":"12 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140426949","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}
Textile and food industries produce huge amount of wastewaters containing dye residues. When these wastewaters are discharged to receiving surface waters like as sea, river and lake, aesthetically unpleasant situations form. Therefore, these wastewaters should be treated. Wastewater treatment is sometimes an expensive operation and cheap methods should be developed. The removal of Indigo Carmine (I.C., Acid dye) and Brilliant Yellow (B.Y., Azo dye) from solution was studied by coagulation using iron chloride salt in a batch reactor at room temperature. As an experimental approach, two leveled factorial design with three factors was applied as a function of pH (4-12), iron chloride amount (0.1-0.4 g/500 mL) and concentration (100-200 mg/L). Low pHs supported to removal of these two dyes. The results showed that 100% I.C. dye removal and 90.5% B.Y. dye removal were achieved. The all parameters were insignificant in respect to statistic for both the dyes. Indigo Carmine and Brilliant Yellow dyes were removed from solutions successfully. The applied treatment method was evaluated as promising due to low sludge production, low cost, low operation time and high performance. A time span of 5 minutes was found as enough for removal of both of the dyes. After treatment of I.C. and B.Y. dyes by coagulation, the coagulated dyes was determined as unreusable due to iron complex by these dyes. Flocculation was found as ineffective. Continuous reactor was successfully adopted.
{"title":"Factorial Experimental Design for Removal of Indigo Carmine and Brilliant Yellow Dyes from Solutions by Coagulation","authors":"Mustafa Korkmaz","doi":"10.35208/ert.1408036","DOIUrl":"https://doi.org/10.35208/ert.1408036","url":null,"abstract":"Textile and food industries produce huge amount of wastewaters containing dye residues. When these wastewaters are discharged to receiving surface waters like as sea, river and lake, aesthetically unpleasant situations form. Therefore, these wastewaters should be treated. Wastewater treatment is sometimes an expensive operation and cheap methods should be developed. The removal of Indigo Carmine (I.C., Acid dye) and Brilliant Yellow (B.Y., Azo dye) from solution was studied by coagulation using iron chloride salt in a batch reactor at room temperature. As an experimental approach, two leveled factorial design with three factors was applied as a function of pH (4-12), iron chloride amount (0.1-0.4 g/500 mL) and concentration (100-200 mg/L). Low pHs supported to removal of these two dyes. The results showed that 100% I.C. dye removal and 90.5% B.Y. dye removal were achieved. The all parameters were insignificant in respect to statistic for both the dyes. Indigo Carmine and Brilliant Yellow dyes were removed from solutions successfully. The applied treatment method was evaluated as promising due to low sludge production, low cost, low operation time and high performance. A time span of 5 minutes was found as enough for removal of both of the dyes. After treatment of I.C. and B.Y. dyes by coagulation, the coagulated dyes was determined as unreusable due to iron complex by these dyes. Flocculation was found as ineffective. Continuous reactor was successfully adopted.","PeriodicalId":126818,"journal":{"name":"Environmental Research and Technology","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140427515","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}
The electro-Fenton oxidation process was used to treat organic pollutants in industrial wastewater as it is one efficient advanced oxidation process. The novel cell used in this process consists of a prepared PbO2 electrode by electrodeposition on graphite substrate and carbon fiber modified with graphene as a cathode. X-ray diffraction, fluorescence, analysis system, atomic force microscopy, and scan electron microscopy were used to characterize the prepared anode and cathode. Contact angle measurement was determined for the carbon fiber cathode before and after modification. The anodic polarization curve showed a higher anodic current when utilizing the PbO2 anode than the graphite anode. Phenol in simulated wastewater was removed by electro-Fenton oxidation at 8 mA/cm2 current density, 0.4 mM of ferrous ion concentration at 35 °C up to 6 h of electrolysis. Chemical oxygen demand for the treated solution was removed by 94.02 % using the cell consisting of modified anode and cathode compared with 81.23% using modified anode and unmodified cathode and 79.87 % when using unmodified anode and modified cathode.
{"title":"PbO2/Graphite and Graphene/Carbon Fiber as an Electrochemical Cell for Oxidation of Organic Contaminants in Refinery Wastewater by Electro-Fenton Process; Electrodes Preparation, Characterization and Performance","authors":"R. Abbas, Ammar S. Abbas","doi":"10.35208/ert.1378232","DOIUrl":"https://doi.org/10.35208/ert.1378232","url":null,"abstract":"The electro-Fenton oxidation process was used to treat organic pollutants in industrial wastewater as it is one efficient advanced oxidation process. The novel cell used in this process consists of a prepared PbO2 electrode by electrodeposition on graphite substrate and carbon fiber modified with graphene as a cathode. X-ray diffraction, fluorescence, analysis system, atomic force microscopy, and scan electron microscopy were used to characterize the prepared anode and cathode. Contact angle measurement was determined for the carbon fiber cathode before and after modification. The anodic polarization curve showed a higher anodic current when utilizing the PbO2 anode than the graphite anode. Phenol in simulated wastewater was removed by electro-Fenton oxidation at 8 mA/cm2 current density, 0.4 mM of ferrous ion concentration at 35 °C up to 6 h of electrolysis. Chemical oxygen demand for the treated solution was removed by 94.02 % using the cell consisting of modified anode and cathode compared with 81.23% using modified anode and unmodified cathode and 79.87 % when using unmodified anode and modified cathode.","PeriodicalId":126818,"journal":{"name":"Environmental Research and Technology","volume":"34 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140425613","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}
Sivasubramanian Palanisamy, Thulasi Mani Murugesan, M. Palaniappan, Carlo Santulli, N. Ayrilmiş
Over the past few decades, natural fibre composites (NFCs) have emerged as a viable alternative to traditional materials like fiberglass, garnering significant interest from researchers and academics, particularly in the context of environmental protection. The spotlight has been on natural fibres such as abaca, bamboo, banana, coir, flax, hemp, jute, kenaf, pineapple leaf (PALF), sisal, and more. These fibres have gained attention due to their several advantageous qualities, including lower weight, cost-effectiveness, reasonably competitive mechanical properties, impressive specific strength, and the potential for biodegradability, making them promising candidates for use as biomaterials. Consequently, they can serve as substitutes for conventional composite fibres like glass, aramid, and carbon in various applications. Furthermore, natural fibres have piqued the interest of an increasing number of researchers because of their ready availability in nature and as by-products of agricultural and food systems, contributing to the enhancement of the environmental ecosystem. This interest coincides with the construction, automotive, and packaging industries' search for environmentally friendly materials to replace synthetic fibres. The utilization of natural fibres is not only logical but also practical, as their fibrous form can be easily extracted and reinforced through chemical, physical, or enzymatic treatments. This article provides a brief overview of NFCs, delving into their chemical, physical, and mechanical characteristics. Additionally, it offers a concise discussion of their diverse applications, all with a central focus on their positive impact on environmental protection.
{"title":"Fostering Sustainability: The Environmental Advantages of Natural Fiber Composite Materials – a Mini Review","authors":"Sivasubramanian Palanisamy, Thulasi Mani Murugesan, M. Palaniappan, Carlo Santulli, N. Ayrilmiş","doi":"10.35208/ert.1397380","DOIUrl":"https://doi.org/10.35208/ert.1397380","url":null,"abstract":"Over the past few decades, natural fibre composites (NFCs) have emerged as a viable alternative to traditional materials like fiberglass, garnering significant interest from researchers and academics, particularly in the context of environmental protection. The spotlight has been on natural fibres such as abaca, bamboo, banana, coir, flax, hemp, jute, kenaf, pineapple leaf (PALF), sisal, and more. These fibres have gained attention due to their several advantageous qualities, including lower weight, cost-effectiveness, reasonably competitive mechanical properties, impressive specific strength, and the potential for biodegradability, making them promising candidates for use as biomaterials. Consequently, they can serve as substitutes for conventional composite fibres like glass, aramid, and carbon in various applications. Furthermore, natural fibres have piqued the interest of an increasing number of researchers because of their ready availability in nature and as by-products of agricultural and food systems, contributing to the enhancement of the environmental ecosystem. This interest coincides with the construction, automotive, and packaging industries' search for environmentally friendly materials to replace synthetic fibres. The utilization of natural fibres is not only logical but also practical, as their fibrous form can be easily extracted and reinforced through chemical, physical, or enzymatic treatments. This article provides a brief overview of NFCs, delving into their chemical, physical, and mechanical characteristics. Additionally, it offers a concise discussion of their diverse applications, all with a central focus on their positive impact on environmental protection.","PeriodicalId":126818,"journal":{"name":"Environmental Research and Technology","volume":"11 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140424725","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}
E. O. Fehi̇ntola, E. Adekunbi̇, Babatunde Ojo, John Awotunde, I. Oke
This paper investigated the performance of the electrochemical treatment technique in removing chloride from saline wastewater (brine) with particular attention to selected polynomial regression models as a follow-up to previous studies. The saline wastewaters were prepared and subjected to electrochemical treatment using developed carbon–resin (anode) and aluminium (cathode) electrodes. Electrochemical treatment of the synthesised saline wastewaters (between 10 x 103 mg/l and 40 x 103 mg/l of chloride) was conducted on a laboratory scale. The influences of picked-out operational factors on the functioning of the electrochemical purification process were monitored using fractional factorial experiments. Three mathematical models were formulated using Microsoft Excel Solver and evaluated statistically. The study revealed that the current, the time and the interval distance between the electrodes were significant and vital factors that impacted the performance of the electrochemical purification treatment of brine. The factors with negative special effects on the performance of the treatment process of brine were separation distance between the electrodes, pH, the depth of the electrode, the initial and primary concentration of the chloride and the flow and discharge rate of the wastewater. The performances of the polynomial regression models were with average errors of 2.99 %, 2.97 % and 2.94% and accuracy of 97.01 %, 97.03 % and 97.06 % for Models A, B and C, respectively. It was concluded that the electrochemical treatment of brine with carbon-resin electrodes is efficient in removing chloride from brine.
本文研究了电化学处理技术在去除含盐废水（盐水）中氯化物方面的性能，并特别关注选定的多项式回归模型，以此作为先前研究的后续。制备了含盐废水，并使用开发的碳树脂（阳极）和铝（阴极）电极对其进行电化学处理。在实验室规模上对合成的含盐废水（氯化物含量介于 10 x 103 毫克/升和 40 x 103 毫克/升之间）进行了电化学处理。利用分数因子实验监测了选定的操作因素对电化学净化过程功能的影响。使用 Microsoft Excel 求解器建立了三个数学模型，并进行了统计评估。研究表明，电流、时间和电极之间的间隔距离是影响盐水电化学净化处理性能的重要因素。对盐水处理过程的性能有负面影响的因素包括电极之间的间隔距离、pH 值、电极深度、氯化物的初始浓度和主要浓度以及废水的流量和排放率。多项式回归模型的平均误差分别为 2.99%、2.97% 和 2.94%，模型 A、B 和 C 的准确度分别为 97.01%、97.03% 和 97.06%。结论是使用碳树脂电极对盐水进行电化学处理可有效去除盐水中的氯化物。
{"title":"PERFORMANCE EVALUATION OF A SIMPLE ELECTROCHEMICAL TREATMENT MODEL FOR SALINE WASTEWATERS: PART B","authors":"E. O. Fehi̇ntola, E. Adekunbi̇, Babatunde Ojo, John Awotunde, I. Oke","doi":"10.35208/ert.1345175","DOIUrl":"https://doi.org/10.35208/ert.1345175","url":null,"abstract":"This paper investigated the performance of the electrochemical treatment technique in removing chloride from saline wastewater (brine) with particular attention to selected polynomial regression models as a follow-up to previous studies. The saline wastewaters were prepared and subjected to electrochemical treatment using developed carbon–resin (anode) and aluminium (cathode) electrodes. Electrochemical treatment of the synthesised saline wastewaters (between 10 x 103 mg/l and 40 x 103 mg/l of chloride) was conducted on a laboratory scale. The influences of picked-out operational factors on the functioning of the electrochemical purification process were monitored using fractional factorial experiments. Three mathematical models were formulated using Microsoft Excel Solver and evaluated statistically. The study revealed that the current, the time and the interval distance between the electrodes were significant and vital factors that impacted the performance of the electrochemical purification treatment of brine. The factors with negative special effects on the performance of the treatment process of brine were separation distance between the electrodes, pH, the depth of the electrode, the initial and primary concentration of the chloride and the flow and discharge rate of the wastewater. The performances of the polynomial regression models were with average errors of 2.99 %, 2.97 % and 2.94% and accuracy of 97.01 %, 97.03 % and 97.06 % for Models A, B and C, respectively. It was concluded that the electrochemical treatment of brine with carbon-resin electrodes is efficient in removing chloride from brine.","PeriodicalId":126818,"journal":{"name":"Environmental Research and Technology","volume":"77 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139838089","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}
Urban air quality has significant impacts on human health, ranging from respiratory issues, asthma, heart diseases, and low birth weight babies to wider environmental concerns like air pollution, greenhouse gas emissions, and global climate change. Thus, monitoring and improving air quality in urban areas has become increasingly important. In response to this growing need, the use of smart environmental drones for air quality monitoring has emerged as one of the most effective methods. This paper explores the application of drone technology in air quality measurement, with a focus on the results and interactive mapping. An inexpensive particulate matter sensor is integrated into the drone as a pollution measurement kit, and the drone's flight plan is then used to perform automatic pollution mapping. The proposed model using drones for urban air quality monitoring not only reduces the potential for errors from sensors but also simplifies maintenance procedures. By doing so, the model can assist in monitoring urban areas in a cost-effective and dynamic manner, enabling users to be aware of air pollution levels.
{"title":"Smart Environmental Drone Utilization for Monitoring Urban Air Quality","authors":"Mahmut Durgun, Yeliz Durgun","doi":"10.35208/ert.1369716","DOIUrl":"https://doi.org/10.35208/ert.1369716","url":null,"abstract":"Urban air quality has significant impacts on human health, ranging from respiratory issues, asthma, heart diseases, and low birth weight babies to wider environmental concerns like air pollution, greenhouse gas emissions, and global climate change. Thus, monitoring and improving air quality in urban areas has become increasingly important. In response to this growing need, the use of smart environmental drones for air quality monitoring has emerged as one of the most effective methods. This paper explores the application of drone technology in air quality measurement, with a focus on the results and interactive mapping. An inexpensive particulate matter sensor is integrated into the drone as a pollution measurement kit, and the drone's flight plan is then used to perform automatic pollution mapping. The proposed model using drones for urban air quality monitoring not only reduces the potential for errors from sensors but also simplifies maintenance procedures. By doing so, the model can assist in monitoring urban areas in a cost-effective and dynamic manner, enabling users to be aware of air pollution levels.","PeriodicalId":126818,"journal":{"name":"Environmental Research and Technology","volume":"61 18","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139778724","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}
Urban air quality has significant impacts on human health, ranging from respiratory issues, asthma, heart diseases, and low birth weight babies to wider environmental concerns like air pollution, greenhouse gas emissions, and global climate change. Thus, monitoring and improving air quality in urban areas has become increasingly important. In response to this growing need, the use of smart environmental drones for air quality monitoring has emerged as one of the most effective methods. This paper explores the application of drone technology in air quality measurement, with a focus on the results and interactive mapping. An inexpensive particulate matter sensor is integrated into the drone as a pollution measurement kit, and the drone's flight plan is then used to perform automatic pollution mapping. The proposed model using drones for urban air quality monitoring not only reduces the potential for errors from sensors but also simplifies maintenance procedures. By doing so, the model can assist in monitoring urban areas in a cost-effective and dynamic manner, enabling users to be aware of air pollution levels.
{"title":"Smart Environmental Drone Utilization for Monitoring Urban Air Quality","authors":"Mahmut Durgun, Yeliz Durgun","doi":"10.35208/ert.1369716","DOIUrl":"https://doi.org/10.35208/ert.1369716","url":null,"abstract":"Urban air quality has significant impacts on human health, ranging from respiratory issues, asthma, heart diseases, and low birth weight babies to wider environmental concerns like air pollution, greenhouse gas emissions, and global climate change. Thus, monitoring and improving air quality in urban areas has become increasingly important. In response to this growing need, the use of smart environmental drones for air quality monitoring has emerged as one of the most effective methods. This paper explores the application of drone technology in air quality measurement, with a focus on the results and interactive mapping. An inexpensive particulate matter sensor is integrated into the drone as a pollution measurement kit, and the drone's flight plan is then used to perform automatic pollution mapping. The proposed model using drones for urban air quality monitoring not only reduces the potential for errors from sensors but also simplifies maintenance procedures. By doing so, the model can assist in monitoring urban areas in a cost-effective and dynamic manner, enabling users to be aware of air pollution levels.","PeriodicalId":126818,"journal":{"name":"Environmental Research and Technology","volume":"44 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139838680","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}
E. O. Fehi̇ntola, E. Adekunbi̇, Babatunde Ojo, John Awotunde, I. Oke
This paper investigated the performance of the electrochemical treatment technique in removing chloride from saline wastewater (brine) with particular attention to selected polynomial regression models as a follow-up to previous studies. The saline wastewaters were prepared and subjected to electrochemical treatment using developed carbon–resin (anode) and aluminium (cathode) electrodes. Electrochemical treatment of the synthesised saline wastewaters (between 10 x 103 mg/l and 40 x 103 mg/l of chloride) was conducted on a laboratory scale. The influences of picked-out operational factors on the functioning of the electrochemical purification process were monitored using fractional factorial experiments. Three mathematical models were formulated using Microsoft Excel Solver and evaluated statistically. The study revealed that the current, the time and the interval distance between the electrodes were significant and vital factors that impacted the performance of the electrochemical purification treatment of brine. The factors with negative special effects on the performance of the treatment process of brine were separation distance between the electrodes, pH, the depth of the electrode, the initial and primary concentration of the chloride and the flow and discharge rate of the wastewater. The performances of the polynomial regression models were with average errors of 2.99 %, 2.97 % and 2.94% and accuracy of 97.01 %, 97.03 % and 97.06 % for Models A, B and C, respectively. It was concluded that the electrochemical treatment of brine with carbon-resin electrodes is efficient in removing chloride from brine.
本文研究了电化学处理技术在去除含盐废水（盐水）中氯化物方面的性能，并特别关注选定的多项式回归模型，以此作为先前研究的后续。制备了含盐废水，并使用开发的碳树脂（阳极）和铝（阴极）电极对其进行电化学处理。在实验室规模上对合成的含盐废水（氯化物含量介于 10 x 103 毫克/升和 40 x 103 毫克/升之间）进行了电化学处理。利用分数因子实验监测了选定的操作因素对电化学净化过程功能的影响。使用 Microsoft Excel 求解器建立了三个数学模型，并进行了统计评估。研究表明，电流、时间和电极之间的间隔距离是影响盐水电化学净化处理性能的重要因素。对盐水处理过程的性能有负面影响的因素包括电极之间的间隔距离、pH 值、电极深度、氯化物的初始浓度和主要浓度以及废水的流量和排放率。多项式回归模型的平均误差分别为 2.99%、2.97% 和 2.94%，模型 A、B 和 C 的准确度分别为 97.01%、97.03% 和 97.06%。结论是使用碳树脂电极对盐水进行电化学处理可有效去除盐水中的氯化物。
{"title":"PERFORMANCE EVALUATION OF A SIMPLE ELECTROCHEMICAL TREATMENT MODEL FOR SALINE WASTEWATERS: PART B","authors":"E. O. Fehi̇ntola, E. Adekunbi̇, Babatunde Ojo, John Awotunde, I. Oke","doi":"10.35208/ert.1345175","DOIUrl":"https://doi.org/10.35208/ert.1345175","url":null,"abstract":"This paper investigated the performance of the electrochemical treatment technique in removing chloride from saline wastewater (brine) with particular attention to selected polynomial regression models as a follow-up to previous studies. The saline wastewaters were prepared and subjected to electrochemical treatment using developed carbon–resin (anode) and aluminium (cathode) electrodes. Electrochemical treatment of the synthesised saline wastewaters (between 10 x 103 mg/l and 40 x 103 mg/l of chloride) was conducted on a laboratory scale. The influences of picked-out operational factors on the functioning of the electrochemical purification process were monitored using fractional factorial experiments. Three mathematical models were formulated using Microsoft Excel Solver and evaluated statistically. The study revealed that the current, the time and the interval distance between the electrodes were significant and vital factors that impacted the performance of the electrochemical purification treatment of brine. The factors with negative special effects on the performance of the treatment process of brine were separation distance between the electrodes, pH, the depth of the electrode, the initial and primary concentration of the chloride and the flow and discharge rate of the wastewater. The performances of the polynomial regression models were with average errors of 2.99 %, 2.97 % and 2.94% and accuracy of 97.01 %, 97.03 % and 97.06 % for Models A, B and C, respectively. It was concluded that the electrochemical treatment of brine with carbon-resin electrodes is efficient in removing chloride from brine.","PeriodicalId":126818,"journal":{"name":"Environmental Research and Technology","volume":"30 22","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139778419","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}
The objective of this research is to delve into the sustainability practices, guidelines, and emerging trends within the airline industry by delving into their sustainability reviews. Employing the Scopus Database, a comprehensive bibliometric analysis of airline sustainability was executed. This encompassed the scrutiny of sustainability reviews from the top forty airlines alongside pertinent academic documents retrieved from the Scopus Database. Furthermore, employing text-mining techniques, a discerning analysis focused on the sustainability reports of the leading 20 companies juxtaposed against the subsequent 20, akin to followers, in the textual examination of sustainability reports. The outcomes yielded a panorama of thematic disparities between these two cohorts. The top 20 enterprises foregrounded paramount concerns such as safety and other sustainability-linked facets such as biodiversity. Conversely, the follower companies accorded heightened prominence to financial considerations. This dissection illuminates the airlines' primacies and the gamut of sustainability-related concerns. In addition to furnishing valuable insights for both researchers and industry practitioners, this study offers a reservoir of pertinent data pertaining to sustainability practices within the aviation sector. By intertwining text mining and bibliometric analysis, pivotal facets of airline sustainability are underscored, culminating in a comprehensive panorama of the research terrain.
{"title":"TEXT MINING ON SUSTAINABILITY REPORTS OF TOP 40 AIRLINES AND BIBLIOMETRIC ANALYSIS OF AIRLINES SUSTAINABILITY","authors":"İbrahim Şapaloğlu","doi":"10.35208/ert.1366703","DOIUrl":"https://doi.org/10.35208/ert.1366703","url":null,"abstract":"The objective of this research is to delve into the sustainability practices, guidelines, and emerging trends within the airline industry by delving into their sustainability reviews. Employing the Scopus Database, a comprehensive bibliometric analysis of airline sustainability was executed. This encompassed the scrutiny of sustainability reviews from the top forty airlines alongside pertinent academic documents retrieved from the Scopus Database. Furthermore, employing text-mining techniques, a discerning analysis focused on the sustainability reports of the leading 20 companies juxtaposed against the subsequent 20, akin to followers, in the textual examination of sustainability reports. The outcomes yielded a panorama of thematic disparities between these two cohorts. The top 20 enterprises foregrounded paramount concerns such as safety and other sustainability-linked facets such as biodiversity. Conversely, the follower companies accorded heightened prominence to financial considerations. This dissection illuminates the airlines' primacies and the gamut of sustainability-related concerns. In addition to furnishing valuable insights for both researchers and industry practitioners, this study offers a reservoir of pertinent data pertaining to sustainability practices within the aviation sector. By intertwining text mining and bibliometric analysis, pivotal facets of airline sustainability are underscored, culminating in a comprehensive panorama of the research terrain.","PeriodicalId":126818,"journal":{"name":"Environmental Research and Technology","volume":"125 16","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139786154","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}
The objective of this research is to delve into the sustainability practices, guidelines, and emerging trends within the airline industry by delving into their sustainability reviews. Employing the Scopus Database, a comprehensive bibliometric analysis of airline sustainability was executed. This encompassed the scrutiny of sustainability reviews from the top forty airlines alongside pertinent academic documents retrieved from the Scopus Database. Furthermore, employing text-mining techniques, a discerning analysis focused on the sustainability reports of the leading 20 companies juxtaposed against the subsequent 20, akin to followers, in the textual examination of sustainability reports. The outcomes yielded a panorama of thematic disparities between these two cohorts. The top 20 enterprises foregrounded paramount concerns such as safety and other sustainability-linked facets such as biodiversity. Conversely, the follower companies accorded heightened prominence to financial considerations. This dissection illuminates the airlines' primacies and the gamut of sustainability-related concerns. In addition to furnishing valuable insights for both researchers and industry practitioners, this study offers a reservoir of pertinent data pertaining to sustainability practices within the aviation sector. By intertwining text mining and bibliometric analysis, pivotal facets of airline sustainability are underscored, culminating in a comprehensive panorama of the research terrain.
{"title":"TEXT MINING ON SUSTAINABILITY REPORTS OF TOP 40 AIRLINES AND BIBLIOMETRIC ANALYSIS OF AIRLINES SUSTAINABILITY","authors":"İbrahim Şapaloğlu","doi":"10.35208/ert.1366703","DOIUrl":"https://doi.org/10.35208/ert.1366703","url":null,"abstract":"The objective of this research is to delve into the sustainability practices, guidelines, and emerging trends within the airline industry by delving into their sustainability reviews. Employing the Scopus Database, a comprehensive bibliometric analysis of airline sustainability was executed. This encompassed the scrutiny of sustainability reviews from the top forty airlines alongside pertinent academic documents retrieved from the Scopus Database. Furthermore, employing text-mining techniques, a discerning analysis focused on the sustainability reports of the leading 20 companies juxtaposed against the subsequent 20, akin to followers, in the textual examination of sustainability reports. The outcomes yielded a panorama of thematic disparities between these two cohorts. The top 20 enterprises foregrounded paramount concerns such as safety and other sustainability-linked facets such as biodiversity. Conversely, the follower companies accorded heightened prominence to financial considerations. This dissection illuminates the airlines' primacies and the gamut of sustainability-related concerns. In addition to furnishing valuable insights for both researchers and industry practitioners, this study offers a reservoir of pertinent data pertaining to sustainability practices within the aviation sector. By intertwining text mining and bibliometric analysis, pivotal facets of airline sustainability are underscored, culminating in a comprehensive panorama of the research terrain.","PeriodicalId":126818,"journal":{"name":"Environmental Research and Technology","volume":"28 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139845880","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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