S. Demim, H. Boussak, Linda Loucif Seiad, S. Mesdour
Eriochrome Black T (EBT) is a potentially harmful substance known for its toxicity and negative impact on the environment. This study aimed to explore the coagulation-flocculation process as a means to treat EBT solutions, using mucilage extracted from cactus cladodes as a natural flocculant. The optimization of this treatment process was accomplished through the application of the Box-Behnken design and response surface methodology (RSM), incorporating three independent variables: EBT concentration (ranging from 20 to 100 mg L-1), pH levels (ranging from 9 to 13), and flocculant volume (ranging from 1 to 4 mL). The coagulation-flocculation experiments were conducted using 1 g L -1 of FeCl 3 as a coagulant and 20 g L -1 of mucilage derived from cactus as a flocculant. Experimental decolorization yields varied from 6.04% to 55.3%, and a second-degree regression model was developed to predict the decolorization process. This model accurately illustrated the influence of each variable and their interactions, displaying a high correlation coefficient (R 2 = 0.96) and a low probability (P < 0.05). Furthermore, the lack of fit P-value (P-value = 0.0892) was determined to be statistically insignificant (P > 0.05). Through experimental optimization, it was determined that the most favorable conditions for the treatment process were as follows: an EBT concentration of 100 mg L -1 , a mucilage solution volume of 2 mL, and a pH level of 13, resulting in a decolorization rate of 55.87%. Fourier transform infrared spectroscopy (FTIR) was employed to characterize the mucilage derived from cactus cladodes, revealing the presence of carbohydrates that aid in the removal of EBT through the coagulation-flocculation process.
铬黑T (EBT)是一种潜在的有害物质，因其毒性和对环境的负面影响而闻名。本研究以仙人掌枝胶浆为天然絮凝剂，探索混凝-絮凝法处理EBT溶液的方法。通过应用Box-Behnken设计和响应面法(RSM)对该处理工艺进行优化，包括三个自变量:EBT浓度(范围从20到100 mg L-1)， pH水平(范围从9到13)和絮凝剂体积(范围从1到4 mL)。以1 g L -1 fecl3为混凝剂，20 g L -1仙人掌粘液为絮凝剂，进行混凝-絮凝实验。实验脱色率为6.04% ~ 55.3%，并建立了二度回归模型对脱色过程进行了预测。该模型准确地反映了各变量的影响及其相互作用，具有较高的相关系数(r2 = 0.96)和较低的概率(P < 0.05)。此外，拟合缺失P值(P值= 0.0892)被确定为无统计学意义(P > 0.05)。通过实验优化，确定了处理工艺的最佳条件为:EBT浓度为100 mg L -1，黏液体积为2 mL, pH值为13，脱色率为55.87%。傅里叶变换红外光谱(FTIR)对仙人掌枝的粘液进行了表征，揭示了碳水化合物的存在，这些碳水化合物有助于通过混凝-絮凝过程去除EBT。
{"title":"OPTIMIZATION REMOVAL OF ERIOCHROME BLACK T BY COAGULATION-FLOCCULATION USING Opuntia ficus-indica MUCILAGE AS FLOCCULANT","authors":"S. Demim, H. Boussak, Linda Loucif Seiad, S. Mesdour","doi":"10.30638/eemj.2023.054","DOIUrl":"https://doi.org/10.30638/eemj.2023.054","url":null,"abstract":"Eriochrome Black T (EBT) is a potentially harmful substance known for its toxicity and negative impact on the environment. This study aimed to explore the coagulation-flocculation process as a means to treat EBT solutions, using mucilage extracted from cactus cladodes as a natural flocculant. The optimization of this treatment process was accomplished through the application of the Box-Behnken design and response surface methodology (RSM), incorporating three independent variables: EBT concentration (ranging from 20 to 100 mg L-1), pH levels (ranging from 9 to 13), and flocculant volume (ranging from 1 to 4 mL). The coagulation-flocculation experiments were conducted using 1 g L -1 of FeCl 3 as a coagulant and 20 g L -1 of mucilage derived from cactus as a flocculant. Experimental decolorization yields varied from 6.04% to 55.3%, and a second-degree regression model was developed to predict the decolorization process. This model accurately illustrated the influence of each variable and their interactions, displaying a high correlation coefficient (R 2 = 0.96) and a low probability (P < 0.05). Furthermore, the lack of fit P-value (P-value = 0.0892) was determined to be statistically insignificant (P > 0.05). Through experimental optimization, it was determined that the most favorable conditions for the treatment process were as follows: an EBT concentration of 100 mg L -1 , a mucilage solution volume of 2 mL, and a pH level of 13, resulting in a decolorization rate of 55.87%. Fourier transform infrared spectroscopy (FTIR) was employed to characterize the mucilage derived from cactus cladodes, revealing the presence of carbohydrates that aid in the removal of EBT through the coagulation-flocculation process.","PeriodicalId":11685,"journal":{"name":"Environmental Engineering and Management Journal","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69523695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"HOW MUCH DOES CHINA'S GREEN INDUSTRIAL REVOLUTION BENEFIT FROM GREEN ENTREPRENEURS? A NONLINEAR AUTOREGRESSIVE DISTRIBUTION LAG (NL-ARDL) APPROACH","authors":"Beverlley Madzikanda, Cai Li, Francis Tang Dabuo","doi":"10.30638/eemj.2023.055","DOIUrl":"https://doi.org/10.30638/eemj.2023.055","url":null,"abstract":"","PeriodicalId":11685,"journal":{"name":"Environmental Engineering and Management Journal","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69523713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"BIOSORPTION OF Cu(II) IONS ON ALGAE BIOMASS AND DERIVED BIOCHAR","authors":"L. Bulgariu, Alina-Alexandra Ciobanu, G. Vasile","doi":"10.30638/eemj.2023.072","DOIUrl":"https://doi.org/10.30638/eemj.2023.072","url":null,"abstract":"","PeriodicalId":11685,"journal":{"name":"Environmental Engineering and Management Journal","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69525476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Successful planning and maintenance of roads in winter conditions require knowledge of the factors that cause snowdrifts and their complex interactions. For this reason, analyses of snowdrift formations rely on the simplification of empirical and analytical patterns of mutual relations between the snowdrift formation factors. This paper analyzes snowdrift endangerment of the state road network in the Autonomous Province (AP) of Vojvodina, through which the important international roads E-75, E-70 and E-662 pass. High wind speeds, low forest cover and flat terrain make AP Vojvodina highly susceptible to snowdrifts. The formation factors of snowdrifts that cause snow drifting in this area, namely the quantity of transported snow, wind speed and extreme winter temperatures, were analyzed. Data on wind speed and extreme winter temperatures from 11 climatological stations were analyzed for the winter period from 2000/2001 to 2019/2020. As one of the principal factors in the formation of snowdrifts, the quantity of transported snow was calculated based on data on the height of the snow cover for these stations and the research period. The sensitivity of each snowdrift factor was calculated using fuzzy logic. Thereafter, the overall sensitivity of the road network to the formation of snowdrifts was determined by synthesizing the sensitivity to each of the selected factors of snowdrift formation (sensitivity to the quantity of transported snow, wind speed and extreme winter temperatures) and was classified into five classes (very low, low, medium, high and very high). The highest degree of sensitivity to the formation of snowdrifts in AP Vojvodina was observed on the roads in South Banat. By identifying the road network sections at greater risk of snowdrifts, this research can serve as a valuable guideline for developing management plans during the winter period. Understanding the potential hazards posed by snowdrifts can help in implementing measures to ensure the safety of road users and minimize the environmental impact associated with road maintenance activities, thus contributing to sustainability and environmental protection.
{"title":"SENSITIVITY ANALYSIS OF ROADS TO SNOWDRIFTS IN THE AUTONOMOUS PROVINCE VOJVODINA AREA, REPUBLIC OF SERBIA","authors":"Mladen Markovic, S. Lukić, A. Baumgertel","doi":"10.30638/eemj.2023.061","DOIUrl":"https://doi.org/10.30638/eemj.2023.061","url":null,"abstract":"Successful planning and maintenance of roads in winter conditions require knowledge of the factors that cause snowdrifts and their complex interactions. For this reason, analyses of snowdrift formations rely on the simplification of empirical and analytical patterns of mutual relations between the snowdrift formation factors. This paper analyzes snowdrift endangerment of the state road network in the Autonomous Province (AP) of Vojvodina, through which the important international roads E-75, E-70 and E-662 pass. High wind speeds, low forest cover and flat terrain make AP Vojvodina highly susceptible to snowdrifts. The formation factors of snowdrifts that cause snow drifting in this area, namely the quantity of transported snow, wind speed and extreme winter temperatures, were analyzed. Data on wind speed and extreme winter temperatures from 11 climatological stations were analyzed for the winter period from 2000/2001 to 2019/2020. As one of the principal factors in the formation of snowdrifts, the quantity of transported snow was calculated based on data on the height of the snow cover for these stations and the research period. The sensitivity of each snowdrift factor was calculated using fuzzy logic. Thereafter, the overall sensitivity of the road network to the formation of snowdrifts was determined by synthesizing the sensitivity to each of the selected factors of snowdrift formation (sensitivity to the quantity of transported snow, wind speed and extreme winter temperatures) and was classified into five classes (very low, low, medium, high and very high). The highest degree of sensitivity to the formation of snowdrifts in AP Vojvodina was observed on the roads in South Banat. By identifying the road network sections at greater risk of snowdrifts, this research can serve as a valuable guideline for developing management plans during the winter period. Understanding the potential hazards posed by snowdrifts can help in implementing measures to ensure the safety of road users and minimize the environmental impact associated with road maintenance activities, thus contributing to sustainability and environmental protection.","PeriodicalId":11685,"journal":{"name":"Environmental Engineering and Management Journal","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69525809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yasaman Farzambehboudi Kilicarslan, O. Kalenderli, Halil Ibrahim Kilicarslan
{"title":"EVALUATING THE CARBON FOOTPRINT IN ELECTRICAL RAILWAY SYSTEM - POTENTIAL REGENERATIVE BRAKING ENERGY","authors":"Yasaman Farzambehboudi Kilicarslan, O. Kalenderli, Halil Ibrahim Kilicarslan","doi":"10.30638/eemj.2023.067","DOIUrl":"https://doi.org/10.30638/eemj.2023.067","url":null,"abstract":"","PeriodicalId":11685,"journal":{"name":"Environmental Engineering and Management Journal","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69525879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Saurabh Kumar Maurya, Sayon Pramanik, Kushal Chandel, Alakesh Manna
{"title":"MATERIAL FLOW ANALYSIS BASED HOLISTIC STUDY ON ENVIRONMENTAL PERFORMANCE OF SMART CITY CHANDIGARH IN INDIA","authors":"Saurabh Kumar Maurya, Sayon Pramanik, Kushal Chandel, Alakesh Manna","doi":"10.30638/eemj.2023.100","DOIUrl":"https://doi.org/10.30638/eemj.2023.100","url":null,"abstract":"","PeriodicalId":11685,"journal":{"name":"Environmental Engineering and Management Journal","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135009123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"PURCHASING GREEN PRODUCTS: FACTORS INFLUENCING CONSUMER BEHAVIOUR IN ROMANIA","authors":"Cristina-Andreea Nicolae, Mihai Ioan Rosca","doi":"10.30638/eemj.2023.095","DOIUrl":"https://doi.org/10.30638/eemj.2023.095","url":null,"abstract":"","PeriodicalId":11685,"journal":{"name":"Environmental Engineering and Management Journal","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135009486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dongpeng Lv, Xue Yang, Huifang Wang, Hong Quan, Xian Zhou, Yuancheng Li
{"title":"TOLERANCE AND REMEDIATION OF LEAD POLLUTION IN SOIL BY Eupatorium adenophorum","authors":"Dongpeng Lv, Xue Yang, Huifang Wang, Hong Quan, Xian Zhou, Yuancheng Li","doi":"10.30638/eemj.2023.081","DOIUrl":"https://doi.org/10.30638/eemj.2023.081","url":null,"abstract":"","PeriodicalId":11685,"journal":{"name":"Environmental Engineering and Management Journal","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135699225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G. Asadollahfardi, S. F. Aghda, A. Samadi, Farhad Dastafkan
{"title":"SUSTAINABLE RURAL DEVELOPMENT BASED ON GROUNDWATER QUALITY USING FUZZY LOGIC AND GIS. A CASE STUDY: MAKU, IRAN","authors":"G. Asadollahfardi, S. F. Aghda, A. Samadi, Farhad Dastafkan","doi":"10.30638/eemj.2023.005","DOIUrl":"https://doi.org/10.30638/eemj.2023.005","url":null,"abstract":"","PeriodicalId":11685,"journal":{"name":"Environmental Engineering and Management Journal","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69519297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Y. Bayar, A. Onaran, T. Karakurt, M. Bayram, S. Topuz, Cemal Kaya, M. Elmastaş
{"title":"STUDIES ON OLEUROPEIN EXTRACTION AND PURIFICATION, ITS ANTIFUNGAL AND ANTIBACTERIAL ACTIVITY AND MOLECULAR DOCKING SIMULATIONS","authors":"Y. Bayar, A. Onaran, T. Karakurt, M. Bayram, S. Topuz, Cemal Kaya, M. Elmastaş","doi":"10.30638/eemj.2023.020","DOIUrl":"https://doi.org/10.30638/eemj.2023.020","url":null,"abstract":"","PeriodicalId":11685,"journal":{"name":"Environmental Engineering and Management Journal","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69520639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：