Recycling最新文献_第4页

Unlocking the Potential of Agrifood Waste for Sustainable Innovation in Agriculture 释放农业食品废弃物的潜力，促进农业可持续创新

IF 4.3

Recycling Pub Date : 2024-03-20 DOI: 10.3390/recycling9020025

Monica Voss, Carlotta Valle, Emanuela Calcio Gaudino, S. Tabasso, Claudio Forte, Giancarlo Cravotto

{"title":"Unlocking the Potential of Agrifood Waste for Sustainable Innovation in Agriculture","authors":"Monica Voss, Carlotta Valle, Emanuela Calcio Gaudino, S. Tabasso, Claudio Forte, Giancarlo Cravotto","doi":"10.3390/recycling9020025","DOIUrl":"https://doi.org/10.3390/recycling9020025","url":null,"abstract":"The United Nations Environment Programme’s (UNEP’s) Food Waste Index Report 2021 highlights a global annual food waste of 1 billion tons. The UNEP plays a crucial role in achieving Sustainable Development Goal (SDG) 12.3, which aims to halve per capita global food waste (FW) at the retail and consumer levels and reduce food losses along production and supply chains globally by 2030. On the other hand, the agricultural sector faces the challenge of increasing productivity to feed the world’s growing population while reducing the environmental impact on ecosystems and human health. In this context, the conversion of agri-food waste (AFW) into biocides, bio-based fertilizers (BBFs) and biostimulants could represent a successful approach to tackle all these issues. This review shows the latest findings on the different sources of AFW and the application of their bioactive compounds in agriculture. Increasing crop yields and improving plant physiology through the utilization of AFW-derived value products aligns with a circular economy approach, bolstering people’s confidence in managing food waste for improved food production.","PeriodicalId":36729,"journal":{"name":"Recycling","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140225697","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}

引用次数: 0

A Framework for Developing a National Research Strategy for Water Reuse 制定国家水回用研究战略的框架

IF 4.3

Recycling Pub Date : 2024-03-16 DOI: 10.3390/recycling9020024

A. Ramaprasad, Thant Syn

引用次数: 0

A Comprehensive Performance Evaluation of GGBS-Based Geopolymer Concrete Activated by a Rice Husk Ash-Synthesised Sodium Silicate Solution and Sodium Hydroxide 用稻壳灰合成的硅酸钠溶液和氢氧化钠活化基于 GGBS 的土工聚合物混凝土的综合性能评估

IF 4.3

Recycling Pub Date : 2024-03-14 DOI: 10.3390/recycling9020023

J. Oti, B. Adeleke, Prageeth R. Mudiyanselage, John Kinuthia

{"title":"A Comprehensive Performance Evaluation of GGBS-Based Geopolymer Concrete Activated by a Rice Husk Ash-Synthesised Sodium Silicate Solution and Sodium Hydroxide","authors":"J. Oti, B. Adeleke, Prageeth R. Mudiyanselage, John Kinuthia","doi":"10.3390/recycling9020023","DOIUrl":"https://doi.org/10.3390/recycling9020023","url":null,"abstract":"Commercial sodium hydroxide (NaOH) and sodium silicate (SS) are commonly used as alkaline activators in geopolymer concrete production despite concerns about their availability and associated CO2 emissions. This study employs an alternative alkaline activator (AA) synthesized from a sodium silicate alternative (SSA) solution derived from rice husk ash (RHA) and a 10 M sodium hydroxide solution. The initial phase established an optimal water-to-binder (W/B) ratio of 0.50, balancing workability and structural performance. Subsequent investigations explored the influence of the alkali/precursor (A/P) ratio on geopolymer concrete properties. A control mix uses ordinary Portland cement (OPC), while ground granulated blast-furnace slag (GGBS)-based geopolymer concrete—GPC mixes (GPC1, GPC2, GPC3, GPC4) vary the A/P ratios (0.2, 0.4, 0.6, 0.8) with a 1:1 ratio of sodium silicate to sodium hydroxide (SS: SH). The engineering performance was evaluated through a slump test, and unconfined compressive strength (UCS) and tensile splitting (TS) tests in accordance with the appropriate standards. The geopolymer mixes, excluding GPC3, offer suitable workability; UCS and TS, though lower than the control mix, peak at an A/P ratio of 0.4. Despite lower mechanical strength than OPC, geopolymers’ environmental benefits make them a valuable alternative. GPC2, with a 0.4 A/P ratio and 0.5 W/B (water to binder) ratio, is recommended for balanced workability and structural performance. Future research should focus on enhancing the mechanical properties of geopolymer concrete for sustainable, high-performance mixtures.","PeriodicalId":36729,"journal":{"name":"Recycling","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140243918","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}

引用次数: 0

Measurements of the Permeability Coefficient of Waste Coal Ash under Hydrostatic Pressure to Identify the Feasibility of Its Use in Construction 测量废煤灰在静水压力下的渗透系数以确定其在建筑中使用的可行性

IF 4.3

Recycling Pub Date : 2024-03-04 DOI: 10.3390/recycling9020022

B. Dutka, K. Godyń, Przemysław Skotniczny, Katarzyna Tokarczyk, Maciej Tram

{"title":"Measurements of the Permeability Coefficient of Waste Coal Ash under Hydrostatic Pressure to Identify the Feasibility of Its Use in Construction","authors":"B. Dutka, K. Godyń, Przemysław Skotniczny, Katarzyna Tokarczyk, Maciej Tram","doi":"10.3390/recycling9020022","DOIUrl":"https://doi.org/10.3390/recycling9020022","url":null,"abstract":"The aim of this research was to measure the filtration properties of waste coal ash under the influence of hydrostatic pressure generated in a three-axial compression apparatus. The scope of work included determining the compactibility parameters, maximum bulk density and optimal moisture content. Permeability tests were performed for a sample with an average grain composition at three compaction indices IS: 0.964, 0.98 and 1.00. The hydrostatic pressure ranging from 0.5 to 1.8 bar corresponded to the layer depths from 2.17 to 7.83 m. Gradually increasing the pressure during the first loading cycle caused irreversible changes in the structure of the sample by local material agglomeration or grain interlocking. The water permeability coefficient was higher in the second loading cycle than in the first cycle. It was shown that waste coal ash cannot be used as a construction material on its own. To obtain constant filtration properties, the waste coal ash material should be doped, or an optimal compactionshould be used (IS = 1.00). The results presented in this study are important for assessing the use of waste coal ash for construction engineering purposes.","PeriodicalId":36729,"journal":{"name":"Recycling","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140266096","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}

引用次数: 0

Comparison of Sodium Hydroxide and Sodium Carbonate as Alkali Catalysts in Ethanol Organosolv Treatment of Cotton Stalks for the Release of Hydroxycinnamates 比较氢氧化钠和碳酸钠作为碱催化剂在乙醇有机溶胶处理棉秆以释放羟基肉桂酸盐的效果

IF 4.3

Recycling Pub Date : 2024-03-01 DOI: 10.3390/recycling9020021

Georgia Papadimitriou, Vassiliki Zarnavalou, Theodoros G. Chatzimitakos, D. Palaiogiannis, V. Athanasiadis, S. Lalas, D. Makris

{"title":"Comparison of Sodium Hydroxide and Sodium Carbonate as Alkali Catalysts in Ethanol Organosolv Treatment of Cotton Stalks for the Release of Hydroxycinnamates","authors":"Georgia Papadimitriou, Vassiliki Zarnavalou, Theodoros G. Chatzimitakos, D. Palaiogiannis, V. Athanasiadis, S. Lalas, D. Makris","doi":"10.3390/recycling9020021","DOIUrl":"https://doi.org/10.3390/recycling9020021","url":null,"abstract":"Cotton stalks are residual biomass resulting from cotton bud harvesting, and they are composed primarily of lignocellulosic material. This material could be a source of functional polyphenols. To investigate this prospect, this study was undertaken with the view to examining whether an ethanol-based organosolv treatment could be suitable for producing extracts enriched in polyphenolic compounds. To this end, alkali catalysis was employed, and two catalysts, sodium hydroxide and sodium carbonate, were tested. The initial approach based on treatment severity showed that both catalysts may be equally effective in the recovery of polyphenols, yet in most cases studied, no clear trend between treatment severity and total polyphenol yield was recorded. The following study, based on response surface methodology, provided optimized conditions for both treatments, sodium hydroxide and sodium carbonate, where the recommended catalyst concentrations were 0.67 and 4%, respectively. Under a constant temperature of 90 °C and residence time of 300 min, the treatments with sodium hydroxide and sodium carbonate afforded total polyphenol yields of 18.4 ± 1 and 15.6 ± 1.9 mg CAE g−1 DM, respectively, which showed no significant statistical difference (p > 0.05). However, high-performance liquid chromatography analyses revealed that the sodium carbonate-catalyzed treatment produced extract particularly enriched in two hydroxycinnamate derivatives, ferulic and p-coumaric acid. This extract also exhibited increased antioxidant activity. The outcome of this study strongly suggests cotton stalks as a bioresource of functional substances, while mild alkali-catalyzed ethanol organosolv treatment appears to be a very promising technique for effectively delivering hydroxycinnamate-enriched extracts.","PeriodicalId":36729,"journal":{"name":"Recycling","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140090447","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}

引用次数: 0

Analysis of Essential Features and Optimal Operational Parameters of an RF-ICP Torch for Waste Treatment Applications 分析用于废物处理应用的射频-ICP 火炬的基本特征和最佳运行参数

IF 4.3

Recycling Pub Date : 2024-02-15 DOI: 10.3390/recycling9010020

Mustafa A. Aldeeb, Sharif Abu Darda, Vahid Damideh, Isaac Hassen, Hossam A. Gabbar

{"title":"Analysis of Essential Features and Optimal Operational Parameters of an RF-ICP Torch for Waste Treatment Applications","authors":"Mustafa A. Aldeeb, Sharif Abu Darda, Vahid Damideh, Isaac Hassen, Hossam A. Gabbar","doi":"10.3390/recycling9010020","DOIUrl":"https://doi.org/10.3390/recycling9010020","url":null,"abstract":"Recently, plasma-based pyrolysis has gained increasing prominence as a technology in response to the growing challenges in waste disposal and the recognition of opportunities to generate valuable by-products. The efficiency of the pyrolysis process is intricately tied to the characteristics of the plasma involved, particularly the effective electron temperature (Teff) and plasma density (ne). This study aimed to conduct a comprehensive examination of the essential features and optimal operational parameters of a developed RF-ICP torch specifically designed for small-scale municipal solid waste (MSW) pyrolysis (mixture of paper and polypropylene) with the goal of controlling both the torch and the overall process. Using optical emission spectroscopy (OES), we measured plasma parameters, specifically (Teff) and (ne), while varying argon gas flow rates and RF powers. The (Teff) and (ne)were determined using the Boltzmann plot and Stark broadening, respectively. The RF torch was found to generate (ne) up to approximately 2.8×1020 cm−3 and (Teff) up to around 8200 K, with both parameters being controlled by the discharge power and gas flow rate. Additionally, a power-losing mechanism, namely the anomalous skin effect, was detected during the study, which is uncommon in atmospheric plasma discharge.","PeriodicalId":36729,"journal":{"name":"Recycling","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139774505","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}

引用次数: 0

Analysis of Essential Features and Optimal Operational Parameters of an RF-ICP Torch for Waste Treatment Applications 分析用于废物处理应用的射频-ICP 火炬的基本特征和最佳运行参数

IF 4.3

Recycling Pub Date : 2024-02-15 DOI: 10.3390/recycling9010020

Mustafa A. Aldeeb, Sharif Abu Darda, Vahid Damideh, Isaac Hassen, Hossam A. Gabbar

{"title":"Analysis of Essential Features and Optimal Operational Parameters of an RF-ICP Torch for Waste Treatment Applications","authors":"Mustafa A. Aldeeb, Sharif Abu Darda, Vahid Damideh, Isaac Hassen, Hossam A. Gabbar","doi":"10.3390/recycling9010020","DOIUrl":"https://doi.org/10.3390/recycling9010020","url":null,"abstract":"Recently, plasma-based pyrolysis has gained increasing prominence as a technology in response to the growing challenges in waste disposal and the recognition of opportunities to generate valuable by-products. The efficiency of the pyrolysis process is intricately tied to the characteristics of the plasma involved, particularly the effective electron temperature (Teff) and plasma density (ne). This study aimed to conduct a comprehensive examination of the essential features and optimal operational parameters of a developed RF-ICP torch specifically designed for small-scale municipal solid waste (MSW) pyrolysis (mixture of paper and polypropylene) with the goal of controlling both the torch and the overall process. Using optical emission spectroscopy (OES), we measured plasma parameters, specifically (Teff) and (ne), while varying argon gas flow rates and RF powers. The (Teff) and (ne)were determined using the Boltzmann plot and Stark broadening, respectively. The RF torch was found to generate (ne) up to approximately 2.8×1020 cm−3 and (Teff) up to around 8200 K, with both parameters being controlled by the discharge power and gas flow rate. Additionally, a power-losing mechanism, namely the anomalous skin effect, was detected during the study, which is uncommon in atmospheric plasma discharge.","PeriodicalId":36729,"journal":{"name":"Recycling","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139833995","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}

引用次数: 0

Drivers and Barriers in the Production and Utilization of Second-Generation Bioethanol in India 印度生产和利用第二代生物乙醇的动力和障碍

IF 4.3

Recycling Pub Date : 2024-02-09 DOI: 10.3390/recycling9010019

Falguni Pattnaik, B. Patra, S. Nanda, Mahendra K. Mohanty, Ajay K. Dalai, Jaya Rawat

{"title":"Drivers and Barriers in the Production and Utilization of Second-Generation Bioethanol in India","authors":"Falguni Pattnaik, B. Patra, S. Nanda, Mahendra K. Mohanty, Ajay K. Dalai, Jaya Rawat","doi":"10.3390/recycling9010019","DOIUrl":"https://doi.org/10.3390/recycling9010019","url":null,"abstract":"Second-generation biorefinery refers to the production of different types of biofuels, biomaterials, and biochemicals by using agri-based and other lignocellulosic biomasses as substrates, which do not compete with arable lands, water for irrigation, and food supply. From the perspective of transportation fuels, second-generation bioethanol plays a crucial role in minimizing the dependency on fossil-based fuels, especially gasoline. Significant efforts have been invested in the research and development of second-generation bioethanol for commercialization in both developing and developed countries. However, in different developing countries like India, commercialization of second-generation bioethanol has been obstructed despite the abundance and variety of agricultural feedstocks. This commercial obstruction was majorly attributed to the recalcitrance of the feedstock, by-product management, and marginal subsidies compared to other nations. This article reviews the major roadblocks to the viability and commercialization of second-generation biofuels, especially bioethanol in India and a few other leading developed and developing nations. This article also reviews the biomass availability, technological advancements, investments, policies, and scale-up potential for biorefineries. A thorough discussion is made on the prospects and barriers to research, development, and demonstration as well as strengths, weaknesses, opportunities, and threats for the commercialization of second-generation bioethanol.","PeriodicalId":36729,"journal":{"name":"Recycling","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139789669","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}

引用次数: 0

Drivers and Barriers in the Production and Utilization of Second-Generation Bioethanol in India 印度生产和利用第二代生物乙醇的动力和障碍

IF 4.3

Recycling Pub Date : 2024-02-09 DOI: 10.3390/recycling9010019

Falguni Pattnaik, B. Patra, S. Nanda, Mahendra K. Mohanty, Ajay K. Dalai, Jaya Rawat

{"title":"Drivers and Barriers in the Production and Utilization of Second-Generation Bioethanol in India","authors":"Falguni Pattnaik, B. Patra, S. Nanda, Mahendra K. Mohanty, Ajay K. Dalai, Jaya Rawat","doi":"10.3390/recycling9010019","DOIUrl":"https://doi.org/10.3390/recycling9010019","url":null,"abstract":"Second-generation biorefinery refers to the production of different types of biofuels, biomaterials, and biochemicals by using agri-based and other lignocellulosic biomasses as substrates, which do not compete with arable lands, water for irrigation, and food supply. From the perspective of transportation fuels, second-generation bioethanol plays a crucial role in minimizing the dependency on fossil-based fuels, especially gasoline. Significant efforts have been invested in the research and development of second-generation bioethanol for commercialization in both developing and developed countries. However, in different developing countries like India, commercialization of second-generation bioethanol has been obstructed despite the abundance and variety of agricultural feedstocks. This commercial obstruction was majorly attributed to the recalcitrance of the feedstock, by-product management, and marginal subsidies compared to other nations. This article reviews the major roadblocks to the viability and commercialization of second-generation biofuels, especially bioethanol in India and a few other leading developed and developing nations. This article also reviews the biomass availability, technological advancements, investments, policies, and scale-up potential for biorefineries. A thorough discussion is made on the prospects and barriers to research, development, and demonstration as well as strengths, weaknesses, opportunities, and threats for the commercialization of second-generation bioethanol.","PeriodicalId":36729,"journal":{"name":"Recycling","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139849335","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}

引用次数: 0

Performance of the Food Waste Recycling Law in Japan with Reference to SDG 12.3 参照可持续发展目标 12.3，日本《厨余回收法》的执行情况

IF 4.3

Recycling Pub Date : 2024-02-08 DOI: 10.3390/recycling9010018

Tomoko Okayama, Kohei Watanabe

引用次数: 0