Journal of Material Cycles and Waste Management最新文献

Choosing among plastic waste management options: lessons from Zimbabwe’s plastic waste flows 在塑料废物管理方案中进行选择：来自津巴布韦塑料废物流动的教训

IF 2.7 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2024-12-17 DOI: 10.1007/s10163-024-02132-0

Luke Makarichi, Warangkana Jutidamrongphan, Kingsley Okpara

{"title":"Choosing among plastic waste management options: lessons from Zimbabwe’s plastic waste flows","authors":"Luke Makarichi, Warangkana Jutidamrongphan, Kingsley Okpara","doi":"10.1007/s10163-024-02132-0","DOIUrl":"10.1007/s10163-024-02132-0","url":null,"abstract":"<div><p>Widespread concerns about plastic pollution have compelled many countries to implement measures aimed at reducing plastic waste (PW) leakage into the environment. Setting 2023 as the base year, the current study employs material flow analysis (MFA) to investigate how the PW situation in Zimbabwe would respond to different management options. The study involved constructing PW flows in an MFA model and re-constructing them under five different scenarios to evaluate how the PW situation changes. Five different indicators are used in comparing outcomes across the scenarios. The results show that increasing PW collections from the current 3.7–10% will increase the availability of plastic recyclates to formal recyclers by 140%, and will raise the country's overall PW recycling rate to 19.8%. However, implementing this measure alone cannot sufficiently reduce plastic pollution. Combining waste-to-energy (WtE) and increasing PW recycling is a necessary interim measure for drastically reducing PW stocks by 40% and creating enough feedstock for a WtE plant with an energetic potential of 3.4 × 10<sup>6</sup> GJ per annum. The study focuses on Zimbabwe, but the lessons learned can be applied to various contexts and assist similar developing countries in decisively reducing plastic pollution.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 1","pages":"597 - 615"},"PeriodicalIF":2.7,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10163-024-02132-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142939340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Selective bromination-volatilization of PbO from ZnO-PbO mixtures using bromine-containing plastic: A promising approach for recycling hazardous wastes 利用含溴塑料从ZnO-PbO混合物中选择性溴化挥发PbO：一种有前途的危险废物回收方法

IF 2.7 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2024-12-17 DOI: 10.1007/s10163-024-02141-z

Yusuf Olalekan Zubair, Yuji Takasaki, Yutaro Takaya, Chiharu Tokoro

{"title":"Selective bromination-volatilization of PbO from ZnO-PbO mixtures using bromine-containing plastic: A promising approach for recycling hazardous wastes","authors":"Yusuf Olalekan Zubair, Yuji Takasaki, Yutaro Takaya, Chiharu Tokoro","doi":"10.1007/s10163-024-02141-z","DOIUrl":"10.1007/s10163-024-02141-z","url":null,"abstract":"<div><p>This study explores the potential of acrylonitrile butadiene styrene (ABS) resin, a bromine-containing plastic, for selectively separating PbO from a ZnO-PbO mixture. Thermodynamic calculations suggested the susceptibility of both PbO and ZnO to bromination by HBr from ABS resin. Initial trials showed limited PbO and ZnO volatilization. Combusting ABS resin and dust mixtures converts approximately 40 wt% of PbO to PbBr<sub>2</sub>, but PbO volatilization selectivity remains below 30% due to concurrent ZnO volatilization. This low selectivity is due to the inhibiting effect of char and CO gas on PbBr<sub>2</sub> volatilization and the enhancement of ZnO volatilization. To improve PbO volatilization selectivity, operational parameters were varied. Increasing ABS resin size, decreasing pellet size, and altering the heating method raised PbO volatilization selectivity by over three times, with more than 60 wt% PbO volatilized. Microscopic analysis confirmed PbO bromination and volatilization as lead bromide compound (e.g., PbBr<sub>2</sub>), while ZnO underwent direct volatilization through a carbothermic reaction. This study shows that optimizing operational parameters can selectively separate heavy metals using bromine-containing plastics. For practical application in steelmaking dust, it is crucial to examine the effects of coexisting Fe compounds.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 1","pages":"616 - 623"},"PeriodicalIF":2.7,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10163-024-02141-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142939370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Wimplebin: an AI-based recycle bin for a better waste management Wimplebin：一个基于人工智能的回收站，可以更好地管理废物

IF 2.7 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2024-12-17 DOI: 10.1007/s10163-024-02145-9

Jiacang Ho, JongHyuk Lee, HyoungSuk Kim

引用次数: 0

Pyrometallurgical eco-recycling for Zn and MnO recovery from spent alkaline and Zn–C batteries 从废碱性电池和锌- c电池中回收锌和MnO的火法冶金生态循环

IF 2.7 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2024-12-14 DOI: 10.1007/s10163-024-02123-1

Seoung Uk Bae, Joo Hyun Park, Kyoung-Tae Park, Jae Hong Shin

{"title":"Pyrometallurgical eco-recycling for Zn and MnO recovery from spent alkaline and Zn–C batteries","authors":"Seoung Uk Bae, Joo Hyun Park, Kyoung-Tae Park, Jae Hong Shin","doi":"10.1007/s10163-024-02123-1","DOIUrl":"10.1007/s10163-024-02123-1","url":null,"abstract":"<div><p>Most studies on the pyrometallurgical recovery of Zn from spent batteries have focused on assessing the recovery of Zn. However, the separation behavior of Zn from the produced black powder remains unknown. In this study, a pyrometallurgical process for recycling Zn and MnO from the black powder obtained by shredding spent alkaline and Zn–C batteries was developed. The black powder was washed with deionized water to remove KCl and subsequently used for recovering Zn and MnO. Preliminary thermodynamic calculations were performed using Factsage 8.2 and HSC 6.0 to set temperature conditions for the experiment. The washed black powder was placed in an electric vertical resistance furnace and heated to 800 ~ 1300 °C. The ZnO present in the black powder was reduced to Zn<sub>(g)</sub> through carbothermal reduction, and then, Zn<sub>(g)</sub> was rapidly condensed in a capture cup to recover Zn powder. After heat treatment at 1300 °C for 1 h, 99.39% of the Zn powder was recovered with 98.16% purity. Furthermore, MnO of 99.05% Mn purity remained as a residue from the black powder in the crucible. The results of this study present a crucial step in improving the resource recovery process while minimizing environmental impact, contributing to the advancement of environmentally friendly recycling technologies.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 1","pages":"572 - 583"},"PeriodicalIF":2.7,"publicationDate":"2024-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142939392","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}

引用次数: 0

Analysis of chemical-looping method for production of hydrogen gas from sewage sludge 污水污泥化学环法制氢分析

IF 2.7 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2024-12-12 DOI: 10.1007/s10163-024-02140-0

Toshiyuki Shiraki, Satoshi Okumura, Satoshi Uehara, Hiroki Harada, Masaki Takaoka

{"title":"Analysis of chemical-looping method for production of hydrogen gas from sewage sludge","authors":"Toshiyuki Shiraki, Satoshi Okumura, Satoshi Uehara, Hiroki Harada, Masaki Takaoka","doi":"10.1007/s10163-024-02140-0","DOIUrl":"10.1007/s10163-024-02140-0","url":null,"abstract":"<div><p>The objective of this study is to develop a highly efficient technology for producing hydrogen from sewage sludge using chemical-looping technology. In this study, laboratory-scale gasification experiments were conducted on sewage sludge samples. The effects of CaO as a carrier of oxygen or carbon (C) and as a gasification accelerator were evaluated. Lab-scale tests using a tube-type electric furnace showed that gasification of CaO-mixed dry sludge with steam resulted in substantial absorption of CO<sub>2</sub> by CaO at 600 ℃ and 700 ℃ and the concentration of H<sub>2</sub> in the gas reached 70 vol.%. The gasification was significantly accelerated in CaO-mixed steam gasification compared with pyrolysis gasification and steam gasification of dry sludge in the absence of the CaO mixture. The hydrogen gas (H<sub>2</sub>) recovery rate also increased, and tar with a high C weight ratio and high calorific value was recovered. Almost the entire C in the sewage sludge was gasified at 800 ℃. Therefore, this method (pyrolysis with steam and CaO) was shown to be effective as one of the hydrogen production methods from sewage sludge.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 1","pages":"558 - 571"},"PeriodicalIF":2.7,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10163-024-02140-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142939359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Natural zeolite composite bricks containing sugarcane bagasse ash: an innovative sustainable construction material 含有蔗渣灰的天然沸石复合砖：一种创新的可持续建筑材料

IF 2.7 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2024-12-11 DOI: 10.1007/s10163-024-02137-9

Mohammad Kamalabadi Farahani, Sajjad Mirvalad, Mohammadreza Azimizadeh

{"title":"Natural zeolite composite bricks containing sugarcane bagasse ash: an innovative sustainable construction material","authors":"Mohammad Kamalabadi Farahani, Sajjad Mirvalad, Mohammadreza Azimizadeh","doi":"10.1007/s10163-024-02137-9","DOIUrl":"10.1007/s10163-024-02137-9","url":null,"abstract":"<div><p>The present research has considered natural zeolite as the base member of the brick composition, and sugarcane bagasse ash, as an additive. Ceramic brick samples consisting 0, 10, and 20% sugarcane bagasse ash by mass of the samples, and natural zeolite as the rest of the total mass were cast. The samples were subjected to uniaxial dry pressing, sintered, and prepared in an electric furnace at temperatures of 950–1050 °C. Mineralogical composition, chemical composition, and particle size distribution of natural zeolite and sugarcane bagasse ash were investigated by X-ray diffraction (XRD), X-ray fluorescence (XRF), and granulation test, respectively. Also, the effect of different compositions and different sintering temperatures on the samples’ physical and thermal properties were studied. The results showed that the thermal conductivity of the samples ranges from 0.89 to 1.46 W/mk. Samples that were sintered at 950 °C and had a higher sugarcane bagasse ash percentage showed a lower thermal conductivity. Also, the samples exhibited compressive strength, ranging from 2 to 30.4 MPa. The ceramic brick, composed of 20% sugarcane bagasse ash, subjected to a sintering temperature of 950 °C, exhibited optimal characteristics. This particular sample obtained a thermal conductivity of 0.89 W/mk and a density of 1.3 g/cm<sup>3</sup>.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 1","pages":"544 - 557"},"PeriodicalIF":2.7,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142939389","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}

引用次数: 0

Automatic recognition of construction waste based on unmanned aerial vehicle images and deep learning 基于无人机图像和深度学习的建筑垃圾自动识别

IF 2.7 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2024-12-10 DOI: 10.1007/s10163-024-02136-w

Pengjian Cheng, Zhongshi Pei, Yuheng Chen, Xin Zhu, Meng Xu, Lulu Fan, Junyan Yi

{"title":"Automatic recognition of construction waste based on unmanned aerial vehicle images and deep learning","authors":"Pengjian Cheng, Zhongshi Pei, Yuheng Chen, Xin Zhu, Meng Xu, Lulu Fan, Junyan Yi","doi":"10.1007/s10163-024-02136-w","DOIUrl":"10.1007/s10163-024-02136-w","url":null,"abstract":"<div><p>As one of the main components of urban waste, the appropriate disposal of construction waste is crucial for the sustainable development of cities. The recognition and classification of construction waste are crucial components of construction waste management and lay the foundation for high-value applications. This paper utilized unmanned aerial vehicle (UAV) aerial images and the YOLO model to recognize construction waste on-site. A dataset of indoor scattered, indoor dense, and demolition site conditions was established. The impact patterns of epoch number, initial learning rate, and batch-size on the model were discussed, and the optimal parameter values were determined. The influence of training dataset composition was analyzed, indicating that appropriately adding indoor dense condition images helped improve the convergence speed and recognition accuracy. In the model performance validation, the comparison with manually sorting results revealed a high accuracy in recognizing the five types of construction waste. The recall of all five types was around 0.8. The validation results showed that the model can efficiently and accurately recognize and classify construction waste in demolition site images. The proposed method can aid in the rapid assessment and dynamic monitoring of construction waste, thereby enhancing the efficiency of waste management and recycling.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 1","pages":"530 - 543"},"PeriodicalIF":2.7,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142939308","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}

引用次数: 0

Comparative analysis of life cycle inventory of cement and ready-mix concrete production in Indonesia 印度尼西亚水泥和预拌混凝土生产生命周期库存的比较分析

IF 2.7 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2024-12-10 DOI: 10.1007/s10163-024-02135-x

Rudi Setiadji Agustiningtyas, Hiroto Takaguchi, Tetsu Kubota, Muhammad Nur Fajri Alfata, Usep Surahman

{"title":"Comparative analysis of life cycle inventory of cement and ready-mix concrete production in Indonesia","authors":"Rudi Setiadji Agustiningtyas, Hiroto Takaguchi, Tetsu Kubota, Muhammad Nur Fajri Alfata, Usep Surahman","doi":"10.1007/s10163-024-02135-x","DOIUrl":"10.1007/s10163-024-02135-x","url":null,"abstract":"<div><p>The development of civil infrastructure in 2016–2021 increased cement and concrete consumption across Indonesia. The reduction of global warming effects can be expedited by providing environmentally friendly cement and concrete alternatives complemented with embodied energy and carbon assessment references. In this study, we investigated the local embodied energy and carbon emission with a boundary of cradle-to-gate for cements and that of cradle-to-site for ready-mix concretes in Indonesia. The production process data were collected from cement manufacturers and ready-mix concrete companies. The analysis starts with the ordinary Portland cement (OPC) and non-OPC cement, and continues to the lightweight OPC concrete and the normal-weight blended concrete. The embodied energy and carbon were quantified. The results showed that those of OPC were the highest, followed by the non-OPC cement of Portland pozzolan cement (PPC), the Portland cement composite (PCC), and the masonry cement. The available low-energy and carbon concrete mixes were found to be a combination of a high-range water reducer admixture, a supplementary cementitious material (SCM), and cement. The lightweight OPC concrete had similar embodied energy with the reference OPC concrete, but its embodied carbon was up to 11.1% lower than the reference OPC. The normal-weight blended PCC concrete with optimum SCM levels reduced embodied energy and carbon by 53.8% and 58.2%, respectively, compared to the reference OPC concrete. The reference PPC concrete is considered an alternative for assessing the embodied energy and carbon of blended concrete in the building design stage.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 1","pages":"488 - 502"},"PeriodicalIF":2.7,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10163-024-02135-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142938764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A two-stage optimization approach for big-scale problems in long-term planning of municipal solid waste management systems 城市生活垃圾管理系统长期规划中大规模问题的两阶段优化方法

IF 2.7 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2024-12-09 DOI: 10.1007/s10163-024-02130-2

Mahmut Kemal Korucu, İlker Küçükoğlu

{"title":"A two-stage optimization approach for big-scale problems in long-term planning of municipal solid waste management systems","authors":"Mahmut Kemal Korucu, İlker Küçükoğlu","doi":"10.1007/s10163-024-02130-2","DOIUrl":"10.1007/s10163-024-02130-2","url":null,"abstract":"<div><p>Most optimization models developed to solve the long-term planning of municipal solid waste management system (LPMSWMS) problems have some disadvantages, such as the inability to model the problem realistically and the failure of the final decisions to provide global optima due to various mathematical limitations. This study presents an optimization approach for realistically modeling and solving the LPMSWMS problems. This new approach takes into account a non-linear mathematical formulation for the LPMSWMS and solves the model into two main stages. In the first stage, the linear relaxation of the model is used, while the non-linear model formulation is used in the second stage to obtain a more realistic solution for the LPMSWMS. According to the findings, the new optimization approach obtained results for small model volumes in longer times than the reference non-linear model structure. On the other hand, the new approach makes it possible to obtain global optima by producing exact solutions at large model volumes, while the reference non-linear model structure cannot produce any solution. This advantage of the new approach for large model volumes can significantly benefit decision-makers in solving big-scale problems that are likely to be encountered in the real world by giving global optima.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 1","pages":"511 - 529"},"PeriodicalIF":2.7,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142938675","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}

引用次数: 0

Pro-environmental, pro-social, and pro-self motives in an extended goal-framing framework in driving household food waste 在扩大目标框架框架下推动家庭食物浪费的亲环境、亲社会和亲自我动机

IF 2.7 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2024-12-08 DOI: 10.1007/s10163-024-02128-w

Ho Huy Tuu

{"title":"Pro-environmental, pro-social, and pro-self motives in an extended goal-framing framework in driving household food waste","authors":"Ho Huy Tuu","doi":"10.1007/s10163-024-02128-w","DOIUrl":"10.1007/s10163-024-02128-w","url":null,"abstract":"<div><p>Household food waste (HFW) poses a significant global challenge for industries and governments due to its adverse environmental, societal, and individual impacts. This study makes a novel contribution to the existing literature by integrating the value-attitude-behavior (VAB) approach and values operationalized as food-related motives within an extended goal-framing framework to explicate consumers' attitudes toward food waste reduction (AFW) and HFW. Specifically, the investigation delves into pro-environmental (environmental protection and animal welfare) and pro-social motives (political, religious, and moral motives), elucidating normative goals, alongside pro-self motives, which encompass gain (health) and hedonic goals. Data were collected from 600 consumers residing in six major cities across Vietnam through a self-administered questionnaire. Structural equation modeling was utilized to assess the proposed hypotheses. The findings underscore the significant contribution of AFW to reducing HFW and highlight its substantial influence from these motives with varying valence. This study enhances our understanding of how values manifest in food-related motives and extend goal-framing theory, emphasizing the importance of targeting these motives in interventions aimed at mitigating HFW while enhancing AFW.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 1","pages":"464 - 474"},"PeriodicalIF":2.7,"publicationDate":"2024-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10163-024-02128-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142939021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0