Abstract The paper aims to study the importance of low-carbon landscape design based on rural tourism landscape. First of all, after sorting out and researching the relevant reviews of low-carbon landscapes, taking rural landscapes as the research object, a rural landscape planning and design framework based on the perspective of low-carbon construction is proposed. Then, Xiwuli Village is used as an example to carry out the application practice of specific strategies and the carbon emissions before and after the planning and design are calculated and compared. After the low-carbon planning and design of the rural landscape, the net carbon footprint and the total carbon footprint were significantly reduced, confirming the low-carbon effect of the planning and design strategy. Finally, according to the actual situation of the scenic spot, it points out the principles and policy suggestions that must be followed in the development of low-carbon rural tourism. Experiments show that: the net carbon footprint and total carbon footprint are significantly reduced, which proves the actual effect of low-carbon design and the effect of low-carbon planning and design strategy.
{"title":"The Importance of Low-Carbon Landscape Design in Rural Tourism Landscape","authors":"Jun Li, Jialiang Gan","doi":"10.2478/eces-2022-0023","DOIUrl":"https://doi.org/10.2478/eces-2022-0023","url":null,"abstract":"Abstract The paper aims to study the importance of low-carbon landscape design based on rural tourism landscape. First of all, after sorting out and researching the relevant reviews of low-carbon landscapes, taking rural landscapes as the research object, a rural landscape planning and design framework based on the perspective of low-carbon construction is proposed. Then, Xiwuli Village is used as an example to carry out the application practice of specific strategies and the carbon emissions before and after the planning and design are calculated and compared. After the low-carbon planning and design of the rural landscape, the net carbon footprint and the total carbon footprint were significantly reduced, confirming the low-carbon effect of the planning and design strategy. Finally, according to the actual situation of the scenic spot, it points out the principles and policy suggestions that must be followed in the development of low-carbon rural tourism. Experiments show that: the net carbon footprint and total carbon footprint are significantly reduced, which proves the actual effect of low-carbon design and the effect of low-carbon planning and design strategy.","PeriodicalId":11395,"journal":{"name":"Ecological Chemistry and Engineering S","volume":"9 1","pages":"319 - 332"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89125813","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}
Abstract Major crises such as greenhouse effect and resource depletion remind people that environmental protection is imminent. However, the economic growth is always accompanied by the destruction of the environment, so the development of green industry economy is very necessary for the balance between the two. However, many of today’s green industry economic development is still in the theoretical stage, and there are no substantive measures. Therefore, this paper aims to build a reasonable development evaluation model for the green industry economy, and use the results of the model to explore the sustainable development of the green industry economy. In view of this, in the stage of proposing the model, this paper refers to a large number of literature and field investigation, and selects 30 suitable evaluation indexes. The experimental results of the green industrial economy in Sichuan Province with the designed model show that the comprehensive evaluation index of green economic development has increased steadily. It reached 0.8255 in 2016, which is in line with the actual situation. This shows that the model in this paper has a good fitting effect, and can provide guidance for the economic development model and effective path of green industry.
{"title":"Economic Development Model and Effective Path of Green Industry","authors":"Wenge Tian, Xin Zhang","doi":"10.2478/eces-2022-0029","DOIUrl":"https://doi.org/10.2478/eces-2022-0029","url":null,"abstract":"Abstract Major crises such as greenhouse effect and resource depletion remind people that environmental protection is imminent. However, the economic growth is always accompanied by the destruction of the environment, so the development of green industry economy is very necessary for the balance between the two. However, many of today’s green industry economic development is still in the theoretical stage, and there are no substantive measures. Therefore, this paper aims to build a reasonable development evaluation model for the green industry economy, and use the results of the model to explore the sustainable development of the green industry economy. In view of this, in the stage of proposing the model, this paper refers to a large number of literature and field investigation, and selects 30 suitable evaluation indexes. The experimental results of the green industrial economy in Sichuan Province with the designed model show that the comprehensive evaluation index of green economic development has increased steadily. It reached 0.8255 in 2016, which is in line with the actual situation. This shows that the model in this paper has a good fitting effect, and can provide guidance for the economic development model and effective path of green industry.","PeriodicalId":11395,"journal":{"name":"Ecological Chemistry and Engineering S","volume":"25 1","pages":"403 - 418"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81329215","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}
Abstract In recent years, the ecological environment has been severely damaged and has evolved into a problem threatening human health due to the construction of the ecological environment. Therefore, studying the eco-environmental (ecological environment) issues in the process of the new eco-environment is of great significance to the comprehensive development of the region. The basic research framework of this article is to ask questions, analyse problems and solve problems. With the rise of e-commerce media platforms as the background, we use case studies and in-depth interviews to discuss the characteristics of the ecological crisis of e-commerce media platforms and analyse them in depth. This paper takes the new ecological environment as the research background, selects six major cities in the Central Plains as the research objects, and digs deep to find out the current ecological and environmental problems in the Central Plains. By citing the PSR (Pressure-State-Response) model, we construct the initial pressure and use the factor analysis method to determine the evaluation index model of the 16 sub-indices. Finally, we use the entropy method to standardise the original indicators. We determine the index weights, etc., to analyse the level of the ecological environment of the six cities. At the same time, this article evaluates the ecological environment in the process of the new ecological environment in the Central Plains. First, an evaluation index system is established, and then the evaluation index weight is determined to obtain the order of the ecological environment problems. According to the total score value of ecological environment quality, for different areas, comprehensive ecological environment zoning is proposed so that resources can be better and rationally developed and utilised. The ecological environment of mining areas is protected and improved to the maximum extent. At the same time, the mine ecological environment monitoring work plan is formulated; the construction of ecological restoration is proposed for areas (mine parks, geological parks, forest parks, and ecological parks). Through organisational structure adjustment and overall supply chain optimisation, relevant feasible solutions are proposed, and examples are given to illustrate the optimisation effects; the part summarises the significance of this research and the main existing problems and proposes future research recommendations. In the context of the new ecological environment, analysing the current situation of the ecological environment in the Central Plains, identifying the ecological and environmental problems in the process of the ecological environment, and proposing corresponding solutions based on the problems are conducive to the development of the new ecological environment in the Central Plains.
{"title":"An Analysis of the Impact of E-Commerce Supply Chain Collaboration on the Ecological Environment in Central Plain","authors":"Kun Wang, Mengze Zhang","doi":"10.2478/eces-2022-0024","DOIUrl":"https://doi.org/10.2478/eces-2022-0024","url":null,"abstract":"Abstract In recent years, the ecological environment has been severely damaged and has evolved into a problem threatening human health due to the construction of the ecological environment. Therefore, studying the eco-environmental (ecological environment) issues in the process of the new eco-environment is of great significance to the comprehensive development of the region. The basic research framework of this article is to ask questions, analyse problems and solve problems. With the rise of e-commerce media platforms as the background, we use case studies and in-depth interviews to discuss the characteristics of the ecological crisis of e-commerce media platforms and analyse them in depth. This paper takes the new ecological environment as the research background, selects six major cities in the Central Plains as the research objects, and digs deep to find out the current ecological and environmental problems in the Central Plains. By citing the PSR (Pressure-State-Response) model, we construct the initial pressure and use the factor analysis method to determine the evaluation index model of the 16 sub-indices. Finally, we use the entropy method to standardise the original indicators. We determine the index weights, etc., to analyse the level of the ecological environment of the six cities. At the same time, this article evaluates the ecological environment in the process of the new ecological environment in the Central Plains. First, an evaluation index system is established, and then the evaluation index weight is determined to obtain the order of the ecological environment problems. According to the total score value of ecological environment quality, for different areas, comprehensive ecological environment zoning is proposed so that resources can be better and rationally developed and utilised. The ecological environment of mining areas is protected and improved to the maximum extent. At the same time, the mine ecological environment monitoring work plan is formulated; the construction of ecological restoration is proposed for areas (mine parks, geological parks, forest parks, and ecological parks). Through organisational structure adjustment and overall supply chain optimisation, relevant feasible solutions are proposed, and examples are given to illustrate the optimisation effects; the part summarises the significance of this research and the main existing problems and proposes future research recommendations. In the context of the new ecological environment, analysing the current situation of the ecological environment in the Central Plains, identifying the ecological and environmental problems in the process of the ecological environment, and proposing corresponding solutions based on the problems are conducive to the development of the new ecological environment in the Central Plains.","PeriodicalId":11395,"journal":{"name":"Ecological Chemistry and Engineering S","volume":"37 1","pages":"333 - 346"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77011517","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}
Xiong Li, Xiaodi Xu, Linxian Yang, Liang Tian, Yining Wang, Jiaqi Hou, Yan Han, Xinwen Xing, Li-Hua Cao
Abstract Soil is the material base of soil fertility. It can not only fix the root system but also provide nutrients, water, and other necessary conditions for crops to promote growth of crops. As a characteristic agricultural product in the Yanbian area, the production of ‘Pingguoli’ is related to the development of the agricultural economy in the Yanbian area. To solve the agricultural problems caused by excessive fertilisation in ‘Pingguoli’ orchards in the Yanbian area and to study the correlation between rare elements and soil properties. Based on the collection of regional natural economic background and soil data in the study area, four treatments were set up: The soil and ‘Pingguoli’ samples were collected, and the total amount of rare earth elements in the soil samples and the related indexes of ‘Pingguoli’ fruit were detected. Soil is the material basis of soil fertility, and soil management determines crop growth. CF1 treatment could increase ‘Pingguoli’ yield and significantly improve fruit quality. The rate of fruit softening and bad fruit decreased significantly after storage. Reduction of fertilisation can improve quality and save cost, among which CF1 has the best effect and can obtain more benefits when applied in production. Implications: Through experiments, agricultural workers can be more deeply aware of the importance of soil to crops; reducing fertilisation can lead to better crop yield and quality while achieving greater benefits, and consumers can get healthier food.
{"title":"Analysis of the Influence of Soil Fertility Factors on High-Yielding Cultivation Techniques","authors":"Xiong Li, Xiaodi Xu, Linxian Yang, Liang Tian, Yining Wang, Jiaqi Hou, Yan Han, Xinwen Xing, Li-Hua Cao","doi":"10.2478/eces-2022-0031","DOIUrl":"https://doi.org/10.2478/eces-2022-0031","url":null,"abstract":"Abstract Soil is the material base of soil fertility. It can not only fix the root system but also provide nutrients, water, and other necessary conditions for crops to promote growth of crops. As a characteristic agricultural product in the Yanbian area, the production of ‘Pingguoli’ is related to the development of the agricultural economy in the Yanbian area. To solve the agricultural problems caused by excessive fertilisation in ‘Pingguoli’ orchards in the Yanbian area and to study the correlation between rare elements and soil properties. Based on the collection of regional natural economic background and soil data in the study area, four treatments were set up: The soil and ‘Pingguoli’ samples were collected, and the total amount of rare earth elements in the soil samples and the related indexes of ‘Pingguoli’ fruit were detected. Soil is the material basis of soil fertility, and soil management determines crop growth. CF1 treatment could increase ‘Pingguoli’ yield and significantly improve fruit quality. The rate of fruit softening and bad fruit decreased significantly after storage. Reduction of fertilisation can improve quality and save cost, among which CF1 has the best effect and can obtain more benefits when applied in production. Implications: Through experiments, agricultural workers can be more deeply aware of the importance of soil to crops; reducing fertilisation can lead to better crop yield and quality while achieving greater benefits, and consumers can get healthier food.","PeriodicalId":11395,"journal":{"name":"Ecological Chemistry and Engineering S","volume":"282 1-2 1","pages":"419 - 430"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78474896","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}
S. Wacławek, M. Fijałkowski, P. Bardos, J. Kočí, S. Scholz, P. Hirsch, G. Domann, M. Černík
Abstract Climate change, critical material shortages and environmental degradation pose an existential threat to the entire world. Immediate action is needed to transform the global economy towards a more circular economy with less intensive use of fossil energy and limited resources and more use of recyclable materials. Recyclable materials and manufacturing techniques will play a critical role in this transformation. Substantial advancements will be needed to achieve a more intelligent materials design to enhance both functionality and enhanced sustainability. The development of hybrid materials combining functionality at macro and nano scales based on organic and inorganic compounds, that are entirely recyclable could be used for tremendous applications. In this mini-review, we provide the reader with recent innovations on hybrid materials for application in water, energy and raw materials sectors. The topic is very modern and after its deep study we propose a creation an international research centre, that would combine the development of hybrid materials with green manufacturing. We have highlighted a framework that would comprise critical themes of the initial research needed. Such a centre would promote sustainable production of materials through intelligent hybridisation and eco-efficient, digital manufacturing and enable a circular economy in the long term. Such activities are strongly supported by current environmental and economical initiatives, like the Green Deal, REPower EU and digital EU initiatives.
{"title":"How Can Hybrid Materials Enable a Circular Economy?","authors":"S. Wacławek, M. Fijałkowski, P. Bardos, J. Kočí, S. Scholz, P. Hirsch, G. Domann, M. Černík","doi":"10.2478/eces-2022-0030","DOIUrl":"https://doi.org/10.2478/eces-2022-0030","url":null,"abstract":"Abstract Climate change, critical material shortages and environmental degradation pose an existential threat to the entire world. Immediate action is needed to transform the global economy towards a more circular economy with less intensive use of fossil energy and limited resources and more use of recyclable materials. Recyclable materials and manufacturing techniques will play a critical role in this transformation. Substantial advancements will be needed to achieve a more intelligent materials design to enhance both functionality and enhanced sustainability. The development of hybrid materials combining functionality at macro and nano scales based on organic and inorganic compounds, that are entirely recyclable could be used for tremendous applications. In this mini-review, we provide the reader with recent innovations on hybrid materials for application in water, energy and raw materials sectors. The topic is very modern and after its deep study we propose a creation an international research centre, that would combine the development of hybrid materials with green manufacturing. We have highlighted a framework that would comprise critical themes of the initial research needed. Such a centre would promote sustainable production of materials through intelligent hybridisation and eco-efficient, digital manufacturing and enable a circular economy in the long term. Such activities are strongly supported by current environmental and economical initiatives, like the Green Deal, REPower EU and digital EU initiatives.","PeriodicalId":11395,"journal":{"name":"Ecological Chemistry and Engineering S","volume":"53 1","pages":"447 - 462"},"PeriodicalIF":0.0,"publicationDate":"2022-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84585412","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}
Abstract Soil microorganisms and soil enzyme activities are important indexes to evaluate soil status. The soil pollution status was evaluated by measuring the physical and chemical properties and heavy metal content of rare earth combined contaminated soil around the Maoniuping old mining area and tailings ponds in different seasons, and measuring the number and diversity of microorganisms and the soil enzyme activities of the arable soil microecology. This research shows that the physical and chemical properties of farmland soil in old mining areas and tailings ponds in different seasons are significantly different, the concentration of rare earth combined contamination in old mines is greater than that in the tailings area, and the changes in the concentration of rare earth combined contamination cause significant changes in soil microecology. Rare earth combined contamination inhibits fungal and bacterial vital activities and promotes the growth of actinomycetes; reduces the sensitivity of sucrase to heavy metal contamination, promotes the activity of phosphatase, and the effect on urease is that of “promotion at low concentration and inhibition at high concentration”; and reduces the community’s ability to use carbon sources and, as a result, the community species are rare and distributed unevenly and the community structure is simple. These results indicate that rare earth combined contamination is potentially harmful to soil microorganisms, which can provide a theoretical basis for the ecological restoration of farmland soil in mining areas.
{"title":"Research on the Effects of Rare Earth Combined Contamination on Soil Microbial Diversity and Enzyme Activity","authors":"Yingdi Jiang, X. Wang, Yunzhu Chen, Lichao Nengzi","doi":"10.2478/eces-2022-0017","DOIUrl":"https://doi.org/10.2478/eces-2022-0017","url":null,"abstract":"Abstract Soil microorganisms and soil enzyme activities are important indexes to evaluate soil status. The soil pollution status was evaluated by measuring the physical and chemical properties and heavy metal content of rare earth combined contaminated soil around the Maoniuping old mining area and tailings ponds in different seasons, and measuring the number and diversity of microorganisms and the soil enzyme activities of the arable soil microecology. This research shows that the physical and chemical properties of farmland soil in old mining areas and tailings ponds in different seasons are significantly different, the concentration of rare earth combined contamination in old mines is greater than that in the tailings area, and the changes in the concentration of rare earth combined contamination cause significant changes in soil microecology. Rare earth combined contamination inhibits fungal and bacterial vital activities and promotes the growth of actinomycetes; reduces the sensitivity of sucrase to heavy metal contamination, promotes the activity of phosphatase, and the effect on urease is that of “promotion at low concentration and inhibition at high concentration”; and reduces the community’s ability to use carbon sources and, as a result, the community species are rare and distributed unevenly and the community structure is simple. These results indicate that rare earth combined contamination is potentially harmful to soil microorganisms, which can provide a theoretical basis for the ecological restoration of farmland soil in mining areas.","PeriodicalId":11395,"journal":{"name":"Ecological Chemistry and Engineering S","volume":"51 1","pages":"227 - 236"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73143006","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}
L. Maslukah, A. Wirasatriya, S. Widada, D. Ismunarti, M. Yusuf, U. Salma, M. Zainuri
Abstract We investigate the distribution of various fractions phosphorus (P) in sediments at the coastal area of Semarang City. Samples were collected from thirteen locations at the Banjir Kanal Barat, port and Banjir Kanal Timur. Sedimentary parameters such as sand, silt, clay, and organic carbon were analysed in order to find out their relation with various P fractions. The sediment types are predominantly sandy and silty with low clay content. Among all fractions (loosely bound/Ads-P), bound calcium/Ca-P), iron bound/Fe-P), and organic fraction/OP), Ca-P fractions constitute the largest portion (71.2 %) followed by iron-bound (17.0 %), organic fraction (10.4 %) and loosely bound (1.4 %). The bioavailable P fractions range from 20.2 % to 42.0 % of the total P (TP) content with average 28.8 %. Relatively high Ads-P content is observed in offshore locations with comparatively high mud percentage as compared with the near-shore locations. The order of abundance of the main forms of P in the Semarang coastal surface sediments is as follows: Ca-P > Fe-P > OP > Ads-P. The concentration of this fraction causes the abundance of chlorophyll-a from 9.09 to 21.09 mg/m3.
{"title":"Fractionation and Bioavailability of Phosphorus and Its Relation to Chlorophyll-a at the Coastal Area of Semarang City","authors":"L. Maslukah, A. Wirasatriya, S. Widada, D. Ismunarti, M. Yusuf, U. Salma, M. Zainuri","doi":"10.2478/eces-2022-0014","DOIUrl":"https://doi.org/10.2478/eces-2022-0014","url":null,"abstract":"Abstract We investigate the distribution of various fractions phosphorus (P) in sediments at the coastal area of Semarang City. Samples were collected from thirteen locations at the Banjir Kanal Barat, port and Banjir Kanal Timur. Sedimentary parameters such as sand, silt, clay, and organic carbon were analysed in order to find out their relation with various P fractions. The sediment types are predominantly sandy and silty with low clay content. Among all fractions (loosely bound/Ads-P), bound calcium/Ca-P), iron bound/Fe-P), and organic fraction/OP), Ca-P fractions constitute the largest portion (71.2 %) followed by iron-bound (17.0 %), organic fraction (10.4 %) and loosely bound (1.4 %). The bioavailable P fractions range from 20.2 % to 42.0 % of the total P (TP) content with average 28.8 %. Relatively high Ads-P content is observed in offshore locations with comparatively high mud percentage as compared with the near-shore locations. The order of abundance of the main forms of P in the Semarang coastal surface sediments is as follows: Ca-P > Fe-P > OP > Ads-P. The concentration of this fraction causes the abundance of chlorophyll-a from 9.09 to 21.09 mg/m3.","PeriodicalId":11395,"journal":{"name":"Ecological Chemistry and Engineering S","volume":"40 1","pages":"183 - 197"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76139032","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}
Ş. Irdemez, Gizem Özyay, F. Ekmekyapar Torun, Sinan Kul, Züleyha Bingül
Abstract In this study, removal of colour from wastewaters prepared synthetically using Bomaplex Blue CR-L was investigated using raw and activated pumpkin seed shells by adsorption in a batch system. The effects of stirring speed, adsorbent concentration, dye concentration, temperature and pH on colour removal were investigated, and adsorption capacities of raw and activated pumpkin seed shells were determined. In addition, adsorption kinetics, isotherm coefficients, activation energies and thermodynamic parameters were calculated. The optimal adsorption conditions were determined as pH = 2, stirring speed of 200 rpm, adsorbent concentration of 10 g L−1 and 30 °C. Under the optimal conditions, the maximum removal efficiency of Bomaplex Blue CR-L using raw pumpkin seed shells was 73.01 %. This value rose to 79.71 % after activation processing was applied. Experimental adsorption data show that the adsorption is more suited to the Langmuir adsorption model and works in accordance with the pseudo-first-order kinetics model. As a result of thermodynamic research, ΔH° and ΔS° were 31.515 kJ mol−1 and 109.952 kJ mol−1 K−1 for the raw adsorbent, respectively. For the activated adsorbent, ΔH° and ΔS° were 43.118 kJ mol−1 and 152.237 kJ mol−1 K−1, respectively. The activation energy of adsorption was calculated as 10.918 kJ mol−1 for the raw adsorbent and 9.882 kJ mol−1 for the activated adsorbent.
摘要本研究以原料南瓜籽壳和活化南瓜籽壳为原料，采用间歇式吸附法对Bomaplex Blue CR-L合成废水进行了脱色研究。考察了搅拌速度、吸附剂浓度、染料浓度、温度和pH对去色的影响，并测定了原料南瓜籽壳和活化南瓜籽壳的吸附能力。计算了吸附动力学、等温线系数、活化能和热力学参数。最佳吸附条件为:pH = 2，搅拌速度200 rpm，吸附剂浓度10 g L−1，温度30℃。在最佳条件下，南瓜籽壳对Bomaplex Blue CR-L的最大去除率为73.01%。应用活化处理后，该值上升到79.71%。实验数据表明，吸附更符合Langmuir吸附模型，符合准一级动力学模型。热力学研究结果表明，原料吸附剂的ΔH°和ΔS°分别为31.515 kJ mol−1和109.952 kJ mol−1 K−1。对于活性吸附剂，ΔH°和ΔS°分别为43.118 kJ mol−1和152.237 kJ mol−1 K−1。计算得到原料吸附剂的吸附活化能为10.918 kJ mol−1，活性吸附剂的吸附活化能为9.882 kJ mol−1。
{"title":"Comparison of Bomaplex Blue CR-L Removal by Adsorption Using Raw and Activated Pumpkin Seed Shells","authors":"Ş. Irdemez, Gizem Özyay, F. Ekmekyapar Torun, Sinan Kul, Züleyha Bingül","doi":"10.2478/eces-2022-0015","DOIUrl":"https://doi.org/10.2478/eces-2022-0015","url":null,"abstract":"Abstract In this study, removal of colour from wastewaters prepared synthetically using Bomaplex Blue CR-L was investigated using raw and activated pumpkin seed shells by adsorption in a batch system. The effects of stirring speed, adsorbent concentration, dye concentration, temperature and pH on colour removal were investigated, and adsorption capacities of raw and activated pumpkin seed shells were determined. In addition, adsorption kinetics, isotherm coefficients, activation energies and thermodynamic parameters were calculated. The optimal adsorption conditions were determined as pH = 2, stirring speed of 200 rpm, adsorbent concentration of 10 g L−1 and 30 °C. Under the optimal conditions, the maximum removal efficiency of Bomaplex Blue CR-L using raw pumpkin seed shells was 73.01 %. This value rose to 79.71 % after activation processing was applied. Experimental adsorption data show that the adsorption is more suited to the Langmuir adsorption model and works in accordance with the pseudo-first-order kinetics model. As a result of thermodynamic research, ΔH° and ΔS° were 31.515 kJ mol−1 and 109.952 kJ mol−1 K−1 for the raw adsorbent, respectively. For the activated adsorbent, ΔH° and ΔS° were 43.118 kJ mol−1 and 152.237 kJ mol−1 K−1, respectively. The activation energy of adsorption was calculated as 10.918 kJ mol−1 for the raw adsorbent and 9.882 kJ mol−1 for the activated adsorbent.","PeriodicalId":11395,"journal":{"name":"Ecological Chemistry and Engineering S","volume":"24 1","pages":"199 - 216"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84984733","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}
C. Okoye, D. Echude, Chike Obinna Chiejina, F. A. Andong, Kingsley Chukwuebuka Okoye, Samuel Ejike Ugwuja, C. D. Ezeonyejiaku, Joseph Effiong Eyo
Abstract Rapid diversification is a way of responding to environmental change for freshwater organisms. This work examined the physicochemical changes and abundance of freshwater snails in Anambra River (Nigeria) during the rainy season. Field studies were conducted fortnightly from June to August 2019 at three stations of the river namely: Otuocha (station I), Otunsugbe (station II), and Ukwubili (station III) about 8.35 kilometers apart from each other. A scoop net of 2 cm mesh size and handpicking was used to sample freshwater snails randomly and water samples were taken to the laboratory for physicochemical analysis. A total of 896 freshwater snails belonging to 6 species (Afropomus balanoidea, Pomacea maculata, Lymnea stagnalis, Lanistes ovum, Pila wernei, and Saulea vitrea) were collected. Pomacea maculata was the most dominant species with a relative abundance of 45.87 %, while Saulea vitrea was the least dominant species with a relative abundance of 2.34 %. There was a significant negative correlation between dissolved oxygen and Pomacea maculate (r = –0.877, p = 0.002) and a positive correlation between dissolved oxygen and Stagnalis lymnea (r = 0.840, p = 0.005). The diversity of species was highest at Otuocha (1.171) followed by Ukwubili (1.133) and Otunsugbe (0.856) with average mean temperatures of (23.1 ±0.1) °C, (27.30 ±0.00) °C, and (26.80 ±0.03) °C respectively. The distribution of freshwater snails was influenced by the physicochemical variability of Anambra River during the rainy season. Therefore, further studies for a longer time and different seasons to examine the impact of physicochemical changes on the snail distribution are encouraged.
快速多样化是淡水生物对环境变化的一种响应方式。本研究考察了尼日利亚阿南布拉河(Anambra River)雨季淡水蜗牛的物理化学变化和丰度。2019年6月至8月，每隔两周在河流的三个站点进行实地研究，即:Otuocha(第1站)、Otunsugbe(第2站)和Ukwubili(第3站)，相距约8.35公里。采用2 cm网目大小的铲网，手工采摘，随机取样淡水蜗牛，并将水样送到实验室进行理化分析。共采集淡水蜗牛896只，分属6种(Afropomus balanoidea、Pomacea maculata、lynea滞螺、Lanistes ovum、Pila wernei和Saulea vitrea)。斑马菊为优势种，相对丰度为45.87%;玻璃Saulea为最小优势种，相对丰度为2.34%。溶解氧与macacea maculate呈显著负相关(r = -0.877, p = 0.002)，溶解氧与thomalis lynea呈显著正相关(r = 0.840, p = 0.005)。物种多样性最高的是Otuocha(1.171)，其次是Ukwubili(1.133)和Otunsugbe(0.856)，平均气温分别为(23.1±0.1)°C、(27.30±0.00)°C和(26.80±0.03)°C。雨季阿南布拉河淡水螺的分布受河水理化变化的影响。因此，鼓励在更长的时间和不同的季节进一步研究物理化学变化对蜗牛分布的影响。
{"title":"Physicochemical Changes and Abundance of Freshwater Snails in Anambra River (Nigeria) During the Rainy Season","authors":"C. Okoye, D. Echude, Chike Obinna Chiejina, F. A. Andong, Kingsley Chukwuebuka Okoye, Samuel Ejike Ugwuja, C. D. Ezeonyejiaku, Joseph Effiong Eyo","doi":"10.2478/eces-2022-0013","DOIUrl":"https://doi.org/10.2478/eces-2022-0013","url":null,"abstract":"Abstract Rapid diversification is a way of responding to environmental change for freshwater organisms. This work examined the physicochemical changes and abundance of freshwater snails in Anambra River (Nigeria) during the rainy season. Field studies were conducted fortnightly from June to August 2019 at three stations of the river namely: Otuocha (station I), Otunsugbe (station II), and Ukwubili (station III) about 8.35 kilometers apart from each other. A scoop net of 2 cm mesh size and handpicking was used to sample freshwater snails randomly and water samples were taken to the laboratory for physicochemical analysis. A total of 896 freshwater snails belonging to 6 species (Afropomus balanoidea, Pomacea maculata, Lymnea stagnalis, Lanistes ovum, Pila wernei, and Saulea vitrea) were collected. Pomacea maculata was the most dominant species with a relative abundance of 45.87 %, while Saulea vitrea was the least dominant species with a relative abundance of 2.34 %. There was a significant negative correlation between dissolved oxygen and Pomacea maculate (r = –0.877, p = 0.002) and a positive correlation between dissolved oxygen and Stagnalis lymnea (r = 0.840, p = 0.005). The diversity of species was highest at Otuocha (1.171) followed by Ukwubili (1.133) and Otunsugbe (0.856) with average mean temperatures of (23.1 ±0.1) °C, (27.30 ±0.00) °C, and (26.80 ±0.03) °C respectively. The distribution of freshwater snails was influenced by the physicochemical variability of Anambra River during the rainy season. Therefore, further studies for a longer time and different seasons to examine the impact of physicochemical changes on the snail distribution are encouraged.","PeriodicalId":11395,"journal":{"name":"Ecological Chemistry and Engineering S","volume":"157 1","pages":"169 - 181"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76622716","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}
Wiktoria Budzyńska-Lipka, P. Świsłowski, M. Rajfur
Abstract The aim of this study was passive biomonitoring of the mountains of southern Poland. Lichens Hypogymnia physodes were used for the study. Concentrations of the heavy metals Ni, Cu, Zn, Cd and Pb were determined in these lichens. The concentrations were measured by atomic absorption spectrometry (AAS). The analysis of the concentrations of the determined heavy metals in the lichen thallus allowed to determine the places with the highest and the lowest contamination with a given heavy metal in the study area. It was shown that the area of Great Czantoria and Big Soszow is the most contaminated with heavy metals among the investigated areas. The study shows that the transport of analytes with the wind from distant emission sources, low-level emission (coal burning), and traffic have the greatest influence on the level of atmospheric aerosol pollution in the study area.
{"title":"Biological Monitoring Using Lichens as a Source of Information About Contamination of Mountain with Heavy Metals","authors":"Wiktoria Budzyńska-Lipka, P. Świsłowski, M. Rajfur","doi":"10.2478/eces-2022-0012","DOIUrl":"https://doi.org/10.2478/eces-2022-0012","url":null,"abstract":"Abstract The aim of this study was passive biomonitoring of the mountains of southern Poland. Lichens Hypogymnia physodes were used for the study. Concentrations of the heavy metals Ni, Cu, Zn, Cd and Pb were determined in these lichens. The concentrations were measured by atomic absorption spectrometry (AAS). The analysis of the concentrations of the determined heavy metals in the lichen thallus allowed to determine the places with the highest and the lowest contamination with a given heavy metal in the study area. It was shown that the area of Great Czantoria and Big Soszow is the most contaminated with heavy metals among the investigated areas. The study shows that the transport of analytes with the wind from distant emission sources, low-level emission (coal burning), and traffic have the greatest influence on the level of atmospheric aerosol pollution in the study area.","PeriodicalId":11395,"journal":{"name":"Ecological Chemistry and Engineering S","volume":"13 1","pages":"155 - 168"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78440049","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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