Journal of Material Cycles and Waste Management最新文献_第4页

Spectroscopic and microscopic investigations for precious metals extracted from complex waste printed circuit board (WPCB) 从复杂废弃印刷电路板（WPCB）中提取贵金属的光谱学和显微研究

IF 3 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2025-06-30 DOI: 10.1007/s10163-025-02295-4

Jyoti Giri, Rakesh Das, Ramesh Puri, Rameshwar Adhikari

{"title":"Spectroscopic and microscopic investigations for precious metals extracted from complex waste printed circuit board (WPCB)","authors":"Jyoti Giri, Rakesh Das, Ramesh Puri, Rameshwar Adhikari","doi":"10.1007/s10163-025-02295-4","DOIUrl":"10.1007/s10163-025-02295-4","url":null,"abstract":"<div><p>Printed circuit boards (PCB) are one of the complex materials containing many precious materials such as copper (Cu), gold (Au), and silver (Ag) along with toxic materials too. PCB on dead use becomes E-waste which randomly dumped in environment with its value and toxicity, which need to be handled cautiously. In this work Cu, Au, and Ag were extracted from the waste printed circuit board (WPCB) by environmentally safe hydrometallurgical method where pulverized WPCB was leached with 2M H<sub>2</sub>SO<sub>4</sub>. The leachate was divided into 2 halves for selective precipitation of Cu with iron powder and green solvent, thiourea followed with NaBH<sub>4</sub> treatment for Au–Ag thiourea green complexation. The purity and structural details of Cu and Au–Ag thiourea precipitate were studied by different techniques such as X-ray diffraction (XRD), Ultraviolet–visible (UV–Vis) spectroscopy, and Scanning electron microscopy (SEM) equipped with the energy-dispersive X-ray (EDX) analysis. The result showed excellent crystalline structure indicating its high purity for Cu powder whereas semi-crystalline porous structure for Au–Ag thiourea is dark-green complex. This work concludes the extraction of Cu, Au and Ag from WPCB board using comparatively green chemicals iron powder and, thiourea and proven to be pure by spectroscopic and microscopic techniques to bring back into circular economy.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 5","pages":"3325 - 3334"},"PeriodicalIF":3.0,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100779","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

Transforming industrial waste by utilizing fly ash and bottom ash for sustainable clay bricks 利用粉煤灰和底灰对工业废料进行转化，制成可持续的粘土砖

IF 3 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2025-06-29 DOI: 10.1007/s10163-025-02299-0

Siwat Lawanwadeekul, Prinya Chindaprasirt, Anujit Phumiphan, Anuwat Srisuwan, Nonthaphong Phonphuak

{"title":"Transforming industrial waste by utilizing fly ash and bottom ash for sustainable clay bricks","authors":"Siwat Lawanwadeekul, Prinya Chindaprasirt, Anujit Phumiphan, Anuwat Srisuwan, Nonthaphong Phonphuak","doi":"10.1007/s10163-025-02299-0","DOIUrl":"10.1007/s10163-025-02299-0","url":null,"abstract":"<div><p>Lignite-based power plants generate substantial volumes of fly ash (FA) and bottom ash (BA), posing long-term disposal and environmental concerns. Although prior studies have investigated FA or BA individually in brick production, limited attention has been given to their combined use at low dosages and under varied firing conditions. This study introduces a novel low-ash formulation by incorporating 2.5%, 5%, and 7.5% FA/BA into clay bricks fired at 900 °C, 1000 °C, and 1100 °C. Results show that 2.5% FA/BA significantly enhances compressive strength (> 25 MPa), surpassing ASTM C62-17 standards, while higher contents increase porosity and reduce mechanical integrity. SEM and XRD confirm the role of mullite formation at 1100 °C in strengthening the matrix. Statistical and ANOVA analyses identify ash content as the dominant factor affecting strength and porosity. An economic assessment highlights 2.5% FA/BA at 900 °C as optimal, offering a 43.7% fuel saving at 2.60 USD/m<sup>2</sup>. This work advances sustainable fired brick design through performance–cost optimization.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 5","pages":"3480 - 3494"},"PeriodicalIF":3.0,"publicationDate":"2025-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100685","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

Influence of hydrogen supply factors on in-situ biological biogas upgrading in thermophilic anaerobic digestion of sewage sludge 供氢因素对污泥热厌氧消化原位生物沼气升级的影响

IF 3 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2025-06-29 DOI: 10.1007/s10163-025-02289-2

Masaaki Nomura, Kazuyuki Oshita, Masaki Takaoka

{"title":"Influence of hydrogen supply factors on in-situ biological biogas upgrading in thermophilic anaerobic digestion of sewage sludge","authors":"Masaaki Nomura, Kazuyuki Oshita, Masaki Takaoka","doi":"10.1007/s10163-025-02289-2","DOIUrl":"10.1007/s10163-025-02289-2","url":null,"abstract":"<div><p>In-situ biological biogas upgrading has some challenges such as inhibition on digestion process and low water solubility of hydrogen (H<sub>2</sub>). In this study, in-situ biogas upgrading was performed in laboratory-scale thermophilic anaerobic digestion of sewage sludge at 1.0 g-VS/L/day organic loading rate (OLR) with gas recirculation and a gradual increase in the H<sub>2</sub> load. Position of H<sub>2</sub> addition and stirring speed were tested as factors of H<sub>2</sub> supply. The results showed that no significant inhibition was apparent at a stirring speed of 75 rpm, and the maximum CH<sub>4</sub> concentration attained 93%. The position of H<sub>2</sub> addition did not affect the observed inhibition under the conditions of the present study. During stirring at 300 rpm, the growth of many microorganisms, especially <i>Methanosarcina</i> and <i>Coprothermobacter</i>, were strongly inhibited, associated with accumulation of volatile fatty acids (VFAs) [mostly acetic acid (1205 mg/L)], and a low biogas yield (13% that of the control reactor). The pH temporarily increased to 9.2, but the VFAs then produced lowered the pH to 8.1, which did not alleviate the inhibition. These findings suggest that reactor operation at a low OLR and a slow stirring speed, with gas recirculation, ensures stable in-situ biogas upgrading. </p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 5","pages":"2899 - 2909"},"PeriodicalIF":3.0,"publicationDate":"2025-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10163-025-02289-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100604","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 review of sewage sludge digestion technologies in Japan: from technological evolution to global perspectives 日本污水污泥消化技术综述：从技术演变到全球视野

IF 3 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2025-06-27 DOI: 10.1007/s10163-025-02281-w

Taira Hidaka, Thu Huong Nguyen, Taketo Togari, Masanobu Takashima, Hiroyuki Shigemura

{"title":"A review of sewage sludge digestion technologies in Japan: from technological evolution to global perspectives","authors":"Taira Hidaka, Thu Huong Nguyen, Taketo Togari, Masanobu Takashima, Hiroyuki Shigemura","doi":"10.1007/s10163-025-02281-w","DOIUrl":"10.1007/s10163-025-02281-w","url":null,"abstract":"<div><p>Wastewater treatment plants worldwide generate significant amounts of sludge, necessitating effective and sustainable treatment solutions. Among available technologies, anaerobic digestion (AD) is considered the most cost-effective and environmentally friendly approach for biological sludge treatment. Although AD is a well-established process, ongoing innovations have significantly enhanced its efficiency and adaptability. This article reviews the historical development, the current implementation, and the future directions of AD of sewage sludge with a focus on Japan. Demonstrated and emerging technologies are discussed in terms of high-solid AD, solubilization and pre-treatment strategies, enhanced organic matter collection, co-digestion with regional biomass, reactor configuration and operation, biogas utilization and energy integration, small-scale plant adaptation, and aerobic composting. As AD increasingly integrates with renewable energy systems, challenges such as volatile fatty acid accumulation and hydrogen inhibition remain. Direct interspecies electron transfer (DIET) has emerged as a promising global strategy to overcome these limitations by enhancing electron transport and methanogenesis stability. The application of DIET in sludge AD can accelerate the development of more resilient and efficient systems tailored to future energy and environmental demands.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 5","pages":"2779 - 2800"},"PeriodicalIF":3.0,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100686","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

A local food resource circulation model combining anaerobic digestion and rice cultivation in Japan: impacts on climate change and nutrient use 日本当地厌氧消化与水稻种植相结合的食物资源循环模式：对气候变化和养分利用的影响

IF 3 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2025-06-27 DOI: 10.1007/s10163-025-02283-8

Wanseop Jung, Yasuhiro Hirai, Junya Yano, Taku Fujiwara, Misuzu Asari, Kentaro Hayashi

{"title":"A local food resource circulation model combining anaerobic digestion and rice cultivation in Japan: impacts on climate change and nutrient use","authors":"Wanseop Jung, Yasuhiro Hirai, Junya Yano, Taku Fujiwara, Misuzu Asari, Kentaro Hayashi","doi":"10.1007/s10163-025-02283-8","DOIUrl":"10.1007/s10163-025-02283-8","url":null,"abstract":"<div><p>To address the environmental burdens caused by greenhouse gas emissions and heavy nitrogen use from agri-food systems, anaerobic digestion of food waste has been proposed as an alternative source of fertilizer and waste management strategy. This study estimated greenhouse gas emissions and nitrogen flows in four scenarios (S0–S3) to evaluate an integrated resource circulation system combining anaerobic digestion and digestate application to rice paddies. Greenhouse gas emissions were mitigated by 6–8% while crop yields were maintained by −0.52–+47 kg rice/ha in alternative scenarios through waste management changes, owing to source separation and increased energy efficiency. Anaerobic digestion process conserved 53% of the nitrogen (0.64 t N/y) embedded in food waste. However, when digestate was applied alone, 23.4 kg N/(ha·y) was estimated to be exhausted from the rice paddy system due to ammonia volatilization from the digestate. Nevertheless, under mixed fertilization, a 0.71 kg N/(ha·y) increase or 9.8 kg N/(ha·y) decrease was observed depending on the scenario. Therefore, the integrated resource circulation system in this study shows a stable yield, is effective against climate change on a local scale, and may guide circular society planning.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 5","pages":"3278 - 3294"},"PeriodicalIF":3.0,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10163-025-02283-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100643","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

Sustainable plastic waste separation: enhancing PVC hydrophilicity with natural CaO catalysts for froth flotation 可持续塑料垃圾分类：用天然CaO催化剂增强PVC的亲水性用于泡沫浮选

IF 3 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2025-06-27 DOI: 10.1007/s10163-025-02297-2

Nguyen Thi Thanh Truc, Lan Binh Nguyen Thi, Ngoc Sang Nguyen Thi

{"title":"Sustainable plastic waste separation: enhancing PVC hydrophilicity with natural CaO catalysts for froth flotation","authors":"Nguyen Thi Thanh Truc, Lan Binh Nguyen Thi, Ngoc Sang Nguyen Thi","doi":"10.1007/s10163-025-02297-2","DOIUrl":"10.1007/s10163-025-02297-2","url":null,"abstract":"<div><p>Effective plastic waste management is critical for mitigating environmental pollution and advancing sustainability. This study introduces a novel, eco-friendly approach for separating polyvinyl chloride (PVC) from mixed plastic waste using a CaO catalyst derived from natural sources, such as clamshells and eggshells. The method employs ultrasonication-assisted surface treatment with CaO to enhance PVC wettability by hydrating its surface, thereby increasing hydrophilicity. This enables efficient separation via froth flotation, where treated PVC sinks while hydrophobic plastics, like polycarbonate (PC), remain afloat. Experimental results demonstrate a separation efficiency of over 95% for PVC, with the CaO catalyst reducing waste and ensuring an environmentally sustainable process. The technique’s simplicity, cost-effectiveness, and reliance on natural materials highlight its potential for large-scale industrial applications in plastic waste recycling, offering a promising solution for reducing environmental impact and promoting a circular economy. </p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 5","pages":"3451 - 3462"},"PeriodicalIF":3.0,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100634","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

Life cycle environmental impacts of the electrothermal magnesium production: a comparative assessment with the Pidgeon and electrolysis methods 电热制镁的生命周期环境影响：与皮金法和电解法的比较评价

IF 3 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2025-06-26 DOI: 10.1007/s10163-025-02282-9

Madan Mohanasundaram, A. Keerthi Vasan, Shilpa M. Dhopte, Rehan R. Sheikh, Disilwa Seth, Rohit B. Meshram

{"title":"Life cycle environmental impacts of the electrothermal magnesium production: a comparative assessment with the Pidgeon and electrolysis methods","authors":"Madan Mohanasundaram, A. Keerthi Vasan, Shilpa M. Dhopte, Rehan R. Sheikh, Disilwa Seth, Rohit B. Meshram","doi":"10.1007/s10163-025-02282-9","DOIUrl":"10.1007/s10163-025-02282-9","url":null,"abstract":"<div><p>The demand for magnesium is steadily progressing in the fields of structural and non-structural applications, but especially in automobiles, because its overall weight advantage results in increased fuel efficiency. The primary goal of the current study is to quantify cradle-to-gate environmental burdens associated with the developed electrothermal process for 1 ton magnesium production using GaBi software. The developed process is compared with the Pidgeon process of China and the electrolysis process of Israel and India. The collected data is analysed using the CML 2001 method. The primary impacts include abiotic depletion potential fossil of about 7.93E04 MJ, global warming potential of about 7.82E03 kg CO<sub>2</sub> eq., human toxicity potential of about 2.87E03 kg DCB eq., and marine aquatic ecotoxicity potential of 1.11E07 kg DCB eq. Few insignificant impacts, such as an acidification potential of 96.7 kg SO<sub>2</sub> eq., a eutrophication potential of 4.15 kg phosphate eq., and a terrestrial ecotoxicity potential of 21.1 kg DCB eq., are also observed. Electricity contributes approximately 98% to the total environmental impacts across all categories. The life cycle analysis to produce primary magnesium via the Pidgeon process in China led to higher environmental damage potential compared to the developed electrothermal process and electrolysis process. The renewable energy sources and recycling can significantly reduce the environmental impact of primary magnesium production, making it more eco-friendly material.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 5","pages":"3266 - 3277"},"PeriodicalIF":3.0,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100536","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

Historical changes in sewage sludge treatment in Japan and implemented policies 日本污水污泥处理的历史变迁及实施政策

IF 3 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2025-06-25 DOI: 10.1007/s10163-025-02288-3

Takeshi Sannomiya, Masaki Suehisa, Chika Abe, Hiroyuki Kato

{"title":"Historical changes in sewage sludge treatment in Japan and implemented policies","authors":"Takeshi Sannomiya, Masaki Suehisa, Chika Abe, Hiroyuki Kato","doi":"10.1007/s10163-025-02288-3","DOIUrl":"10.1007/s10163-025-02288-3","url":null,"abstract":"<div><p>The current coverage rate of sewerage systems in Japan exceeds 80%. The appropriate treatment and recycling of sewage sludge are becoming increasingly emphasized. Historically, sludge was disposed at sea or used as an organic fertilizer. However, given the spread of sewerage systems and lifestyle changes since the 1960s, the amount of sludge has increased rapidly, rendering it difficult to find suitable disposal sites. Consequently, efforts have been made to reduce the volume of sludge and to recycle it. The 1996 revision of the Sewerage Act made it compulsory to reduce the sludge volume, leading to the expansion of recycling. In 2015, the conversion of sludge into fuel and fertilizer became a government policy, and the doubling of sludge use as fertilizer by 2030 was mandated. To allow the conversion of sludge into fertilizer, new safety standards for heavy metals and other substances have been introduced, as well as new standards for “bacterial phosphate fertilizers.” Converting sludge into energy in the form of biogas and solid fuel is being promoted to reduce greenhouse gases and establish a sound material cycle society. The Ministry of Land, Infrastructure, Transport, and Tourism (MLIT) is seeking to expand resource recycling by considering regional characteristics. The MLIT offers financial support for projects that demonstrate new technologies, reducing environmental burden and promoting the effective use of resources.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 5","pages":"2801 - 2810"},"PeriodicalIF":3.0,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100593","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

Municipal solid waste management in Portugal using material flow analysis: regional assessment 葡萄牙城市固体废物管理使用物质流分析：区域评估

IF 3 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2025-06-25 DOI: 10.1007/s10163-025-02279-4

Eva Costa, Kazuyuki Oshita, Masaki Takaoka

{"title":"Municipal solid waste management in Portugal using material flow analysis: regional assessment","authors":"Eva Costa, Kazuyuki Oshita, Masaki Takaoka","doi":"10.1007/s10163-025-02279-4","DOIUrl":"10.1007/s10163-025-02279-4","url":null,"abstract":"<div><p>The rapid economic and utility value loss of materials, which then become waste, has brought several challenges in managing municipal solid waste (MSW). Material Flow Analysis (MFA) is widely employed in MSW management for its ability to provide in-depth analysis of waste quantitative flows, providing a robust baseline for further environmental and economic assessments. In complex, interdisciplinary decision-making, a clear identification of MSW management (MSWM) systems is essential, particularly for efficient resource use at regional scales. This study applied MFA to assess MSWM systems at both national and regional levels across Portugal for 2015, 2020, and 2021, analyzing seven regions, including mainland Portugal. Data were sourced from annual sector reports. Results indicate substantial regional disparities, with landfill disposal rates ranging from ~ 40% in metropolitan areas to as high as 84% in other regions—falling short of European Union targets. The COVID-19 pandemic exacerbated landfill use across all regions. Despite high household organic waste generation, organic valorization remains limited, and residual fractions sent to landfills are also high. Increasing investments in source separation, especially for organic waste, and waste valorization facilities would enhance material valorization and reduce landfill dependence. This study underscores the urgent need for solutions to achieve ambitious targets. </p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 5","pages":"3238 - 3251"},"PeriodicalIF":3.0,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10163-025-02279-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100698","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

Decentralized composting for biodegradable waste in Indian cities: assessment of socioeconomic impacts, compost quality, and sustainability in urban waste management 印度城市生物可降解废物的分散式堆肥：城市废物管理的社会经济影响、堆肥质量和可持续性评估

IF 3 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2025-06-24 DOI: 10.1007/s10163-025-02290-9

Rama Bhupal Reddy Donthi, Bhavani Ramannagari

{"title":"Decentralized composting for biodegradable waste in Indian cities: assessment of socioeconomic impacts, compost quality, and sustainability in urban waste management","authors":"Rama Bhupal Reddy Donthi, Bhavani Ramannagari","doi":"10.1007/s10163-025-02290-9","DOIUrl":"10.1007/s10163-025-02290-9","url":null,"abstract":"<div><p>This study investigates the potential of decentralized composting as a sustainable approach to municipal solid waste (MSW) management in Anantapur, Andhra Pradesh. A door-to-door (D2D) survey was conducted across 110 households, categorized into five socioeconomic groups, resulting in the collection of 770 waste samples over one week. The average waste generation rate was found to 0.89 kg/household/day, with per capita generation at 0.253 kg/day. Biodegradable waste constituted over 70% of total waste across all groups, underscoring the potential for composting. A knowledge, attitude and practices (KAP) survey revealed that 74% of residents were unaware of MSW management, and 88% had a positive attitude towards source segregation. The decentralized composting method involved household-level composting, the resulting compost was analysed for physicochemical and nutrient properties. The compost met or exceeded the Fertilizer Control Order (FCO) standards, with ideal pH (6.69), EC (1.178 dS m⁻<sup>1</sup>), and C: N ratio (8.3:1). Heavy metals such as Cu, Ni, Pb, and Zn were well within permissible limits, with Cd below detection levels, indicating minimal contamination. The study’s novelty lies in integrating socioeconomic profiling with decentralized compost quality assessment, providing actionable data for localized MSW strategies. The findings support decentralized composting as a scalable, low-cost, and environmentally sound complement to centralized systems.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"27 5","pages":"3352 - 3365"},"PeriodicalIF":3.0,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100594","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