Pub Date : 2021-11-20DOI: 10.1186/s42834-021-00110-x
N. Prabhakarrao, T. Rao, K. V. D. Lakshmi, G. Divya, G. Jaishree, I. M. Raju, S. A. Alim
{"title":"Enhanced photocatalytic performance of Nb doped TiO2/reduced graphene oxide nanocomposites over rhodamine B dye under visible light illumination","authors":"N. Prabhakarrao, T. Rao, K. V. D. Lakshmi, G. Divya, G. Jaishree, I. M. Raju, S. A. Alim","doi":"10.1186/s42834-021-00110-x","DOIUrl":"https://doi.org/10.1186/s42834-021-00110-x","url":null,"abstract":"","PeriodicalId":22130,"journal":{"name":"Sustainable Environment Research","volume":" ","pages":""},"PeriodicalIF":4.9,"publicationDate":"2021-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43894168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2021-11-03DOI: 10.21203/rs.3.rs-1016987/v1
K. G. Quiton, Ming-Chun Lu, Y. Huang
In this present study, a novel method to fabricate bimetallic Fe-Co catalyst supported on waste silica was investigated for the photo-Fenton-like (PFL) degradation of Methylene Blue (MB) dye. The uniqueness of this work is on the preparation of the catalyst via fluidized-bed crystallization (FBC) process. Under the optimum conditions of initial pH of 3.0, 3.0 mM of H 2 O 2 , and 1.0 g L -1 of FBC-derived Fe-Co/SiO 2 catalyst (fFCS), the maximum response for the decoloration and mineralization efficiencies of 20 mg L -1 of MB in 60 min were 100 and 65%, respectively. Compared to the impregnated Fe-Co/SiO 2 catalyst, the fFCS catalyst exhibited comparable decoloration and mineralization efficiencies, and relatively lower metal leaching for both iron and cobalt. Superoxide radical was unveiled to be the dominant reactive oxygen species in the PFL system over the fFCS catalyst. The catalysts were characterized by Fourier Transform Infrared spectroscopy, Energy Dispersive X-ray spectroscopy and Scanning Electron Microscopy. The results show the successful incorporation of iron and cobalt on the surface of the SiO 2 support material.
本文研究了一种新型二氧化硅负载双金属Fe-Co催化剂的制备方法，用于光fenton -like降解亚甲基蓝(MB)染料。这项工作的独特之处在于通过流化床结晶(FBC)工艺制备催化剂。在初始pH为3.0、h2o浓度为3.0 mM、fbc衍生Fe-Co/ sio2催化剂(fFCS)浓度为1.0 g L -1的条件下，MB浓度为20 mg L -1, 60 min的最大脱色率和矿化率分别为100%和65%。与Fe-Co/ sio2浸渍催化剂相比，fFCS催化剂的脱色和矿化效率相当，铁和钴的金属浸出率相对较低。在PFL体系中，超氧自由基是fFCS催化剂的主要活性氧。采用傅里叶红外光谱、x射线能谱和扫描电镜对催化剂进行了表征。结果表明，铁和钴在sio2支撑材料表面成功结合。
{"title":"Synergistic degradation of Methylene Blue by novel Fe-Co bimetallic catalyst supported on waste silica in photo-Fenton-like system","authors":"K. G. Quiton, Ming-Chun Lu, Y. Huang","doi":"10.21203/rs.3.rs-1016987/v1","DOIUrl":"https://doi.org/10.21203/rs.3.rs-1016987/v1","url":null,"abstract":"In this present study, a novel method to fabricate bimetallic Fe-Co catalyst supported on waste silica was investigated for the photo-Fenton-like (PFL) degradation of Methylene Blue (MB) dye. The uniqueness of this work is on the preparation of the catalyst via fluidized-bed crystallization (FBC) process. Under the optimum conditions of initial pH of 3.0, 3.0 mM of H 2 O 2 , and 1.0 g L -1 of FBC-derived Fe-Co/SiO 2 catalyst (fFCS), the maximum response for the decoloration and mineralization efficiencies of 20 mg L -1 of MB in 60 min were 100 and 65%, respectively. Compared to the impregnated Fe-Co/SiO 2 catalyst, the fFCS catalyst exhibited comparable decoloration and mineralization efficiencies, and relatively lower metal leaching for both iron and cobalt. Superoxide radical was unveiled to be the dominant reactive oxygen species in the PFL system over the fFCS catalyst. The catalysts were characterized by Fourier Transform Infrared spectroscopy, Energy Dispersive X-ray spectroscopy and Scanning Electron Microscopy. The results show the successful incorporation of iron and cobalt on the surface of the SiO 2 support material.","PeriodicalId":22130,"journal":{"name":"Sustainable Environment Research","volume":" ","pages":"1-18"},"PeriodicalIF":4.9,"publicationDate":"2021-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45141627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2021-11-01DOI: 10.21203/rs.3.rs-995797/v1
Jr-Lin Lin, Arthur Karangan, Yingli Huang, Shyh-fang Kang
Carlson trophic state index (CTSI) has been commonly adopted to assess the eutrophication potential of reservoirs or lakes in water quality management. This study aims to analyze the influencing factors of CTSI-based eutrophication by using Pearson correlation analysis and principal component analysis (PCA) with long-term data from 2008 to 2019 on 21 drinking water reservoirs in Taiwan. The trophic state index (TSI) deviation indicates that most drinking water reservoirs in Taiwan, around 45.5% of statistical data fall into non-algal turbidity with surplus phosphorus, especially in the spring and winter season. Besides, there are about 78 % of total collected data show that TSI (Chl-a) is less than TSI (SD) due to the small particulate predominance. On the other hand, three TSI variables (Secchi depth (SD), total phosphorus (TP) and chlorophyll-a (Chl-a)) of CTSI exhibits insignificant correlation to each other in most cases. At such a condition, the probability of eutrophication (TSI>50) based on TSI (SD) is 63%, while it is only as low as 20% based on TSI (TP) and TSI (Chl-a). The influencing factors of eutrophication variables by suspended solids (SS) composition and turbidity have shown that the SD is strongly influenced by non-algal SS. The deviations of three TSI have shown that the highest algae-induced eutrophication potential occurs in the summer season. In addition, the TP is the most significant loading factor of algae-induced eutrophication for drinking water reservoirs. It is concluded that the CTSI has limited applicability to identify the trophic status of drinking water reservoirs in Taiwan in the presence of sustainable non-algal turbidity comparative Chl-a that completely represents algal growth potential (AGP).
{"title":"Correction to: Eutrophication factor analysis using Carlson trophic state index (CTSI) towards non-algal impact reservoirs in Taiwan","authors":"Jr-Lin Lin, Arthur Karangan, Yingli Huang, Shyh-fang Kang","doi":"10.21203/rs.3.rs-995797/v1","DOIUrl":"https://doi.org/10.21203/rs.3.rs-995797/v1","url":null,"abstract":"\u0000 Carlson trophic state index (CTSI) has been commonly adopted to assess the eutrophication potential of reservoirs or lakes in water quality management. This study aims to analyze the influencing factors of CTSI-based eutrophication by using Pearson correlation analysis and principal component analysis (PCA) with long-term data from 2008 to 2019 on 21 drinking water reservoirs in Taiwan. The trophic state index (TSI) deviation indicates that most drinking water reservoirs in Taiwan, around 45.5% of statistical data fall into non-algal turbidity with surplus phosphorus, especially in the spring and winter season. Besides, there are about 78 % of total collected data show that TSI (Chl-a) is less than TSI (SD) due to the small particulate predominance. On the other hand, three TSI variables (Secchi depth (SD), total phosphorus (TP) and chlorophyll-a (Chl-a)) of CTSI exhibits insignificant correlation to each other in most cases. At such a condition, the probability of eutrophication (TSI>50) based on TSI (SD) is 63%, while it is only as low as 20% based on TSI (TP) and TSI (Chl-a). The influencing factors of eutrophication variables by suspended solids (SS) composition and turbidity have shown that the SD is strongly influenced by non-algal SS. The deviations of three TSI have shown that the highest algae-induced eutrophication potential occurs in the summer season. In addition, the TP is the most significant loading factor of algae-induced eutrophication for drinking water reservoirs. It is concluded that the CTSI has limited applicability to identify the trophic status of drinking water reservoirs in Taiwan in the presence of sustainable non-algal turbidity comparative Chl-a that completely represents algal growth potential (AGP).","PeriodicalId":22130,"journal":{"name":"Sustainable Environment Research","volume":"32 1","pages":"1-3"},"PeriodicalIF":4.9,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43700319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2021-10-28DOI: 10.1186/s42834-021-00108-5
Samantha Macchi, Zane Alsebai, F. Watanabe, Arooba Ilyas, Shiraz Atif, T. Viswanathan, Noureen Siraj
{"title":"Influence of phosphorus and nitrogen co-doping of activated carbon from littered cigarette filters for adsorption of methylene blue dye from wastewater","authors":"Samantha Macchi, Zane Alsebai, F. Watanabe, Arooba Ilyas, Shiraz Atif, T. Viswanathan, Noureen Siraj","doi":"10.1186/s42834-021-00108-5","DOIUrl":"https://doi.org/10.1186/s42834-021-00108-5","url":null,"abstract":"","PeriodicalId":22130,"journal":{"name":"Sustainable Environment Research","volume":"31 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2021-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"65798382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2021-10-19DOI: 10.1186/s42834-021-00106-7
G. Boldrini, Caterina Sgarlata, I. Lancellotti, L. Barbieri, M. Giorgetti, Michela Ciabocco, S. Zamponi, M. Berrettoni, C. Leonelli
{"title":"Efficient chemical stabilization of tannery wastewater pollutants in a single step process: Geopolymerization","authors":"G. Boldrini, Caterina Sgarlata, I. Lancellotti, L. Barbieri, M. Giorgetti, Michela Ciabocco, S. Zamponi, M. Berrettoni, C. Leonelli","doi":"10.1186/s42834-021-00106-7","DOIUrl":"https://doi.org/10.1186/s42834-021-00106-7","url":null,"abstract":"","PeriodicalId":22130,"journal":{"name":"Sustainable Environment Research","volume":"31 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"65798341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2021-10-19DOI: 10.1186/s42834-021-00109-4
F. Troncoso, G. Tonetto
{"title":"Nb2O5 monolith as an efficient and reusable catalyst for textile wastewater treatment","authors":"F. Troncoso, G. Tonetto","doi":"10.1186/s42834-021-00109-4","DOIUrl":"https://doi.org/10.1186/s42834-021-00109-4","url":null,"abstract":"","PeriodicalId":22130,"journal":{"name":"Sustainable Environment Research","volume":" ","pages":""},"PeriodicalIF":4.9,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42887468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2021-10-18DOI: 10.21203/rs.3.rs-960294/v1
Aweewan Mangmeechai
There is no clear direction in the management of electrical and electronic waste products (e-waste), as there are no regulations on ways to do so. This research attempts to understand the trade-off between the economic value and the environmental effects of the current disposal of e-waste to find ways to optimize waste management, focusing on cellphones, television cathode ray tubes, desktop computers, and air conditioners. A life cycle greenhouse gas and life cycle costs were conducted. Under the e-waste management status quo, most household e-waste is kept in houses because owners do not know where to discard it. In addition, informal sectors, such as domestic farmers or workers, have been actively involved in collecting and dismantling e-waste for more than a decade, leading to poor management standards for both health and the environment. Without e-waste management regulations, informal dismantlers of products gain slight profits by collecting and selling parts and discarding all non-recyclable waste in municipal garbage dumps. The current practice actually adds greenhouse gas to the atmosphere mainly due to improper logistics management and discarding of refrigerants. The logistics are inefficient because the dismantling communities and recycling locations are far apart. Most e-waste is generated, and most recycling industries are located in the central region (the richest areas), while the dismantling communities are located in the northeastern region (the poorest areas). Furthermore, the life cycle of greenhouse gas and the life cycle costs of e-waste are affected by transportation, and not all e-waste parts can be recycled within the country. High-tech mineral extraction cannot be practiced in the country, and thus, circuit boards and batteries are exported for recycling. To promote a circular economy, e-waste management regulations should be implemented, the costs of proper e-waste management should be internalized, and a full recycling industry should be established in the country.
{"title":"The life-cycle assessment of greenhouse gas emissions and life-cycle costs of e-waste management in Thailand","authors":"Aweewan Mangmeechai","doi":"10.21203/rs.3.rs-960294/v1","DOIUrl":"https://doi.org/10.21203/rs.3.rs-960294/v1","url":null,"abstract":"There is no clear direction in the management of electrical and electronic waste products (e-waste), as there are no regulations on ways to do so. This research attempts to understand the trade-off between the economic value and the environmental effects of the current disposal of e-waste to find ways to optimize waste management, focusing on cellphones, television cathode ray tubes, desktop computers, and air conditioners. A life cycle greenhouse gas and life cycle costs were conducted. Under the e-waste management status quo, most household e-waste is kept in houses because owners do not know where to discard it. In addition, informal sectors, such as domestic farmers or workers, have been actively involved in collecting and dismantling e-waste for more than a decade, leading to poor management standards for both health and the environment. Without e-waste management regulations, informal dismantlers of products gain slight profits by collecting and selling parts and discarding all non-recyclable waste in municipal garbage dumps. The current practice actually adds greenhouse gas to the atmosphere mainly due to improper logistics management and discarding of refrigerants. The logistics are inefficient because the dismantling communities and recycling locations are far apart. Most e-waste is generated, and most recycling industries are located in the central region (the richest areas), while the dismantling communities are located in the northeastern region (the poorest areas). Furthermore, the life cycle of greenhouse gas and the life cycle costs of e-waste are affected by transportation, and not all e-waste parts can be recycled within the country. High-tech mineral extraction cannot be practiced in the country, and thus, circuit boards and batteries are exported for recycling. To promote a circular economy, e-waste management regulations should be implemented, the costs of proper e-waste management should be internalized, and a full recycling industry should be established in the country.","PeriodicalId":22130,"journal":{"name":"Sustainable Environment Research","volume":" ","pages":"1-13"},"PeriodicalIF":4.9,"publicationDate":"2021-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47330054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2021-10-09DOI: 10.1186/s42834-021-00105-8
Y. Saab, Z. Nakad, Rita Rahme
{"title":"Chemotherapeutic drugs in Lebanese surface waters: estimation of population exposure and identification of high-risk drugs","authors":"Y. Saab, Z. Nakad, Rita Rahme","doi":"10.1186/s42834-021-00105-8","DOIUrl":"https://doi.org/10.1186/s42834-021-00105-8","url":null,"abstract":"","PeriodicalId":22130,"journal":{"name":"Sustainable Environment Research","volume":" ","pages":""},"PeriodicalIF":4.9,"publicationDate":"2021-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47686644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2021-10-05DOI: 10.21203/rs.3.rs-934278/v1
Birgitta Narindri Rara Winayu, Wangqi Mao, H. Chu
Toluene is one type of common volatile organic compounds that is harmful to human health. Therefore, the degradation of toluene is critical to improving air quality value. Performance improvement of TiO 2 , a typically applied photocatalyst, has advantages in light absorption and electron transfer process. In this study, the TiO 2 catalyst was improved by the doping of reduced graphene oxide (rGO), sulfur, and nitrogen (S, N) elements. The highest toluene photocatalytic degradation was performed under the composition of 1wt%rGO/S 0.05 N 0.1 TiO 2 . Improvement in photocatalytic activity was achieved by higher specific surface area, formation of oxygen-containing functional group, and chemical defect structure. However, a higher amount of rGO addition creates the shielding effect and inhibits the light penetration. Moreover, the relative humidity and applied temperature influence the photocatalytic activity through the competitive adsorption or increase the collisions frequency, respectively. During the photocatalytic degradation using 0.1wt%rGO/S 0.05 N 0.1 TiO 2 , toluene will be converted into benzyl alcohol, benzaldehyde, benzoic acid, water, and carbon dioxide.
甲苯是一种常见的危害人体健康的挥发性有机化合物。因此，甲苯的降解对改善空气质量价值至关重要。二氧化钛是一种典型的光催化剂，在光吸收和电子转移过程中具有优势。在本研究中，通过掺杂还原氧化石墨烯(rGO)、硫和氮(S, N)元素来改进tio2催化剂。在1wt%rGO/S 0.05 N 0.1 tio2的条件下，甲苯的光催化降解效果最好。光催化活性的提高是通过更高的比表面积、含氧官能团的形成和化学缺陷结构来实现的。然而，较高的还原氧化石墨烯添加量会产生屏蔽作用，抑制光的穿透。此外，相对湿度和施加温度分别通过竞争吸附和增加碰撞频率影响光催化活性。在0.1wt%rGO/S 0.05 N 0.1 tio2光催化降解过程中，甲苯转化为苯甲醇、苯甲醛、苯甲酸、水和二氧化碳。
{"title":"Combination of rGO/S, N/TiO2 for the enhancement of visible light-driven toluene photocatalytic degradation","authors":"Birgitta Narindri Rara Winayu, Wangqi Mao, H. Chu","doi":"10.21203/rs.3.rs-934278/v1","DOIUrl":"https://doi.org/10.21203/rs.3.rs-934278/v1","url":null,"abstract":"Toluene is one type of common volatile organic compounds that is harmful to human health. Therefore, the degradation of toluene is critical to improving air quality value. Performance improvement of TiO 2 , a typically applied photocatalyst, has advantages in light absorption and electron transfer process. In this study, the TiO 2 catalyst was improved by the doping of reduced graphene oxide (rGO), sulfur, and nitrogen (S, N) elements. The highest toluene photocatalytic degradation was performed under the composition of 1wt%rGO/S 0.05 N 0.1 TiO 2 . Improvement in photocatalytic activity was achieved by higher specific surface area, formation of oxygen-containing functional group, and chemical defect structure. However, a higher amount of rGO addition creates the shielding effect and inhibits the light penetration. Moreover, the relative humidity and applied temperature influence the photocatalytic activity through the competitive adsorption or increase the collisions frequency, respectively. During the photocatalytic degradation using 0.1wt%rGO/S 0.05 N 0.1 TiO 2 , toluene will be converted into benzyl alcohol, benzaldehyde, benzoic acid, water, and carbon dioxide.","PeriodicalId":22130,"journal":{"name":"Sustainable Environment Research","volume":"32 1","pages":"1-18"},"PeriodicalIF":4.9,"publicationDate":"2021-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43973030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2021-09-22DOI: 10.1186/s42834-021-00100-z
Chih-Kuei Chen, Jiajing Chen, Nhat-Thien Nguyen, Thuy-Trang Le, N. Nguyen, Chang-Tang Chang
{"title":"Specifically designed magnetic biochar from waste wood for arsenic removal","authors":"Chih-Kuei Chen, Jiajing Chen, Nhat-Thien Nguyen, Thuy-Trang Le, N. Nguyen, Chang-Tang Chang","doi":"10.1186/s42834-021-00100-z","DOIUrl":"https://doi.org/10.1186/s42834-021-00100-z","url":null,"abstract":"","PeriodicalId":22130,"journal":{"name":"Sustainable Environment Research","volume":" ","pages":""},"PeriodicalIF":4.9,"publicationDate":"2021-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42971315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
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