Cleaner Waste Systems最新文献_第9页

Bibliometric analysis on sustainable waste management: Special evidence from municipal solid wastes 可持续废物管理的文献计量分析：来自城市固体废物的特殊证据

IF 3.9

Cleaner Waste Systems

Pub Date : 2025-08-10 DOI: 10.1016/j.clwas.2025.100386

Md. Sohel Rana , Md. Kutub Uddin , Md. Shawan Uddin , Md. Ikbal Hossain , Md. Sohel Rana

The rapid growth of global population, coupled with industrialization, urbanization, and quickly advancing technology has significantly contributed to the escalation of environmental issues. In addition, increased manufacturing, the exploitation of natural resources, and rapid consumption all contribute to huge waste production in cities. Moreover, effective management of municipal solid waste management has become a growing environmental concern worldwide. This study reviews research on sustainable municipal solid waste management from 1994 to 2024 using performance evaluation techniques. This study employs RStudio software to conduct bibliometric analysis, using data retrieved from the Web of Science database. The primary search keywords were related to sustainable waste management with a focus on municipal solid waste management. A total of 4778 publications is found with these keywords. This study finds “Tsang Dcw” as the most dominant researcher in this field with highest publications and citations. Moreover, the country-wise analysis indicated that the United States contributed the largest number of publications, whereas China emerged as the most cited country in the field of sustainable waste management. “Journal of Cleaner Production” is identified as the journal with highest citation while “sustainability” records highest documents. The findings of this comprehensive review are expected to serve as a valuable resource for researchers that will potentially reduce the time typically required for conducting a thorough literature review. Finally, policymakers can receive a valuable viewpoint to manage solid waste in the municipality in a sustainable manner.

全球人口的快速增长，加上工业化、城市化和技术的快速发展，大大加剧了环境问题的升级。此外，制造业的发展、自然资源的开发和快速消费都导致了城市中大量的废物产生。此外，有效管理城市固体废物管理已成为全世界日益关注的环境问题。本文利用绩效评价技术对1994 ~ 2024年我国城市固体废物可持续管理的研究进行了综述。本研究采用RStudio软件进行文献计量分析，数据来源于Web of Science数据库。主要搜索关键词与可持续废物管理有关，重点是城市固体废物管理。使用这些关键词的出版物共有4778篇。本研究发现“Tsang Dcw”是该领域最具主导地位的研究者，发表论文和被引次数最多。此外，国别分析表明，美国的出版物数量最多，而中国在可持续废物管理领域成为被引用最多的国家。《清洁生产杂志》被认为是被引用次数最多的期刊，《可持续发展》被认为是被引用次数最多的期刊。这项综合综述的研究结果有望为研究人员提供宝贵的资源，这将有可能减少进行全面文献综述所需的时间。最后，决策者可以获得一个有价值的观点，以可持续的方式管理城市的固体废物。

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引用次数: 0

Assessing the viability of a proposed third-party reusable foodware system: An environmental and economic comparison 评估提议的第三方可重复使用食品系统的可行性：环境和经济比较

IF 3.9

Cleaner Waste Systems

Pub Date : 2025-08-10 DOI: 10.1016/j.clwas.2025.100387

Margaret Milani , William Bridges , Andrew Hurley , James Sternberg

Single-use plastic foodware production continues to rise despite the negative impacts it has on the environment. This continued growth is fueled by the increasing popularity of single-use plastic foodware for food service. Although previous studies have found reusable foodware to be a more environmentally, and economically, favorable alternative, the capital required to establish and maintain a reusable foodware system remains a common barrier to its implementation. This study aims to address this problem by assessing the environmental and economic viability of a proposed third-party company, equipped with an industrial dishwasher and commercial truck that could pick up and deliver reusable foodware to participating food service providers. The results of the Life Cycle Analysis revealed that the reusable foodware must be reused at least 25 times within the proposed system before having less environmental impacts in every category. The economic analysis concluded that the reusable foodware system could generate an annual profit while also saving participating food providers upwards of $0.07 per place setting. Ultimately, the third-party reusable foodware system could be an environmentally and economically favorable alternative to single-use plastic foodware.

尽管一次性塑料餐具对环境产生了负面影响，但其产量仍在持续增长。这种持续的增长是由用于食品服务的一次性塑料餐具日益普及所推动的。尽管先前的研究发现可重复使用的餐具是一种更环保、更经济、更有利的选择，但建立和维护可重复使用的餐具系统所需的资金仍然是其实施的常见障碍。本研究旨在通过评估第三方公司的环境和经济可行性来解决这一问题，该公司配备了工业洗碗机和商用卡车，可以将可重复使用的餐具运送到参与的食品服务提供商。生命周期分析的结果显示，可重复使用的餐具必须在拟议的系统内重复使用至少25次，才能减少对每个类别的环境影响。经济分析得出的结论是，可重复使用的餐具系统每年可以产生利润，同时也为参与的食品供应商节省了每份餐具0.07美元以上的费用。最终，第三方可重复使用的餐具系统可以成为一次性塑料餐具的环境和经济上有利的替代品。

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引用次数: 0

Environmental and health risks of nanowaste as an emerging contaminant: A systematic review 纳米废物作为一种新兴污染物的环境和健康风险：系统综述

IF 3.9

Cleaner Waste Systems

Pub Date : 2025-08-07 DOI: 10.1016/j.clwas.2025.100385

H.A. Abu-Qdais , A.I. Kurbatova

The huge production amounts and use of nanomaterials has led to the generation of an emerging type of waste stream that contains materials with nanoscale dimension and known as nanowaste. Once released into the environment, such waste can pose risks to the public health and environment. Due to their unique properties, the conventional risk assessment approaches cannot be adopted in nanowaste risk assessment, which is a serious challenge facing the regulatory process. This study conducted a systematic literature review to provide insight into the current scientific knowledge on nanowaste sources, release, pathways and the risks associated with their treatment and disposal. Data extracted from 37 articles that published during 2011–2023 was subjected to analysis following PRISMA statement. The results showed that there is an increasing trend in publications until the year 2018. Most of the published articles were from EU countries, where such articles stemmed from projects funded by the EC on Nano safety. Nanowaste may be released from point (single) and non-point (multiple) sources. Once released into the environment, nanowaste is subjected to partitioning and follow different pathways to environmental systems. The lack of regulatory requirements, standard characterization methodologies and the continuous production of new nanoproducts makes the quantification of the generated nanowaste a hard task. Such knowledge gaps increase the level of uncertainty in the risk assessment and leads to poor risk management and communication. This calls for the need in changes in the risk assessment framework of nanowaste to address their risk in a more systematic and accurate manner. Adopting stochastic modelling of the risk assessment parameters will lower the uncertainty levels.

纳米材料的大量生产和使用导致了一种新型废物流的产生，这种废物流包含纳米尺度的材料，被称为纳米废物。这些废物一旦排放到环境中，就会对公众健康和环境构成风险。传统的风险评估方法由于其独特的性质，在纳米废弃物的风险评估中无法采用，这是监管过程中面临的严峻挑战。本研究进行了系统的文献综述，以深入了解当前关于纳米废物来源、释放、途径及其处理和处置相关风险的科学知识。从2011-2023年间发表的37篇文章中提取的数据根据PRISMA声明进行了分析。结果表明，直到2018年，出版物都有增加的趋势。大多数发表的文章来自欧盟国家，这些文章源于欧共体资助的纳米安全项目。纳米废物可以从点（单一）和非点（多个）来源释放。纳米废物一旦被释放到环境中，就会受到分割，并遵循不同的途径进入环境系统。缺乏监管要求、标准表征方法和新纳米产品的持续生产使得产生的纳米废物的量化成为一项艰巨的任务。这种知识差距增加了风险评估中的不确定性，并导致风险管理和沟通不良。这就要求需要改变纳米废物的风险评估框架，以更系统和准确的方式处理它们的风险。采用随机模型对风险评价参数进行建模，降低了不确定性。

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引用次数: 0

Kiwi peel waste enhances manure protein degradation: Statistical optimization using Box-Behnken design and response surface methodology 猕猴桃皮废物提高粪便蛋白质降解：使用Box-Behnken设计和响应面方法的统计优化

IF 3.9

Cleaner Waste Systems

Pub Date : 2025-08-06 DOI: 10.1016/j.clwas.2025.100382

Noori M. Cata Saady, Tasnia Hasan Nazifa

Anaerobic digestion (AD) of protein-rich waste is challenged by ammonia accumulation. This study explores the potential of Kiwi peel waste (KPW)-derived proteases (actinidin) to enhance manure protein degradation. It used Box–Behnken response surface design to optimize the protein quantity and ammonia reduction in batch experiments. It studied the individual and interactive effects of the manure degradation parameters (manure dosage, KPW dosage, and time). The optimal manure protein quantity reduction (39 ± 0.54 %) was obtained at manure dosages of 4 g VS L⁻¹, KPW dosage of 7.5 g VS L⁻¹, and 48 h. However, the optimum conditions for reducing ammonia by 64 ± 0.65 % are manure dosage of 9 g VS L⁻¹, KPW dosage of 7.5 g VS L⁻¹, and 48 h. A highly predictive second-order polynomial model predicted reduction consistent with those observed experimentally (R² = 0.99). Change and decrease in FTIR peak intensity from 3200 to 3400 cm⁻¹ confirmed the disturbance of hydrogen bonds and the breaking of amide or N-H bonds within side chains in the hydrolyzed manure sample. The tests characterizing the hydrolyzed substrate and the statistical model data affirm that employing KPW for manure degradation is a feasible strategy to tackle ammonia buildup. This approach can potentially enhance protein degradation in manure and increase methane yield in AD. Future studies may explore the effects of using different types of manure or other slaughterhouse waste to understand the model’s viability on various protein-rich wastes. The stability of actinidin needs to be investigated under different environmental conditions, such as temperature, pH, nutrients, etc.

富蛋白废物的厌氧消化（AD）受到氨积累的挑战。本研究探讨了猕猴桃皮废物（KPW）衍生的蛋白酶（actinidin）在促进粪便蛋白质降解方面的潜力。在批量实验中，采用Box-Behnken响应面设计优化蛋白质量和氨还原。研究了粪肥降解参数（粪肥投加量、KPW投加量和时间）的个体效应和交互效应。粪肥投加量为4 g VS L−1、KPW投加量为7.5 g VS L−1和48 h时，粪蛋白减量最佳（39 ± 0.54 %）。结果表明，有机肥投加量为9 g VS L−1、KPW投加量为7.5 g VS L−1、48 h可使氨还原率达到64 ± 0.65 %。高度预测的二阶多项式模型预测的减少与实验观察一致（R2 = 0.99）。FTIR峰强度在3200 ~ 3400 cm−1范围内的变化和减小证实了水解粪便样品中氢键受到干扰，侧链内酰胺键或N-H键断裂。水解底物的特性试验和统计模型数据证实，利用KPW降解粪肥是解决氨积累问题的可行策略。这种方法可以潜在地促进粪便中蛋白质的降解，并增加AD的甲烷产量。未来的研究可能会探索使用不同类型的粪便或其他屠宰场废物的影响，以了解该模型在各种富含蛋白质的废物上的可行性。在不同的环境条件下，如温度、pH、营养物质等，需要考察锕系素的稳定性。

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引用次数: 0

Analysing the key drivers and barriers for implementing circular economy practices in waste management systems using ISM and MICMAC analysis 使用ISM和MICMAC分析分析在废物管理系统中实施循环经济实践的主要驱动因素和障碍

IF 3.9

Cleaner Waste Systems

Pub Date : 2025-08-05 DOI: 10.1016/j.clwas.2025.100381

Nitish Kumar Minz , Monika Yadav , Anshika Prakash , Shivani Kain

The transition toward a circular economy (CE) offers a sustainable alternative to traditional waste management systems but faces significant challenges due to technological, policy, economic, and behavioural barriers. Addressing the fragmented understanding of these factors, this study presents a structured, data-driven framework by integrating Interpretive Structural Modelling (ISM) and MICMAC analysis, validated through Structural Equation Modelling (SEM). Through systematic literature review and expert consultation, the research identifies and prioritises twelve key drivers and barriers influencing CE adoption in waste management. The findings reveal that advanced recycling technologies, policy support, and waste-to-energy opportunities act as pivotal enablers, while infrastructure limitations and high investment costs emerge as major barriers. The ISM model constructs a hierarchical structure of interdependencies, and MICMAC analysis categorises factors based on their driving and dependence powers, offering strategic insights. SEM validation confirms the robustness of the proposed framework, with significant causal relationships (e.g., β = 0.72 between technological advancements and infrastructure development). This study contributes a state-of-the-art decision-support model to guide policymakers and industry stakeholders in designing targeted interventions, accelerating the transition toward sustainable and circular waste management systems.

向循环经济（CE）的过渡为传统的废物管理系统提供了一个可持续的替代方案，但由于技术、政策、经济和行为障碍，面临着重大挑战。为了解决对这些因素的零散理解，本研究通过整合解释结构建模（ISM）和MICMAC分析提出了一个结构化的数据驱动框架，并通过结构方程建模（SEM）进行验证。通过系统的文献回顾和专家咨询，本研究确定并优先考虑了影响废物管理中采用环保技术的十二个关键驱动因素和障碍。研究结果表明，先进的回收技术、政策支持和废物转化为能源的机会是关键的推动因素，而基础设施限制和高投资成本成为主要障碍。ISM模型构建了相互依赖的层次结构，MICMAC分析根据驱动和依赖能力对因素进行分类，提供战略见解。SEM验证证实了所提出框架的稳健性，具有显著的因果关系（例如，技术进步和基础设施发展之间的β = 0.72）。本研究提供了一个最先进的决策支持模型，以指导决策者和行业利益相关者设计有针对性的干预措施，加速向可持续和循环废物管理系统的过渡。

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引用次数: 0

Development of a three-dimensional sustainable waste management scale for small rapidly industrialising states 为快速工业化的小国家开发三维可持续废物管理规模

IF 3.9

Cleaner Waste Systems

Pub Date : 2025-08-05 DOI: 10.1016/j.clwas.2025.100369

Khaled M. Alhosani

This paper develops and validates a scale that measures sustainable industrial waste management in small, rapidly industrialising states (SIWM-SRIS), considering the perspective of industrial waste management stakeholder groups. Small states encounter unique vulnerabilities in managing industrial waste due to their small land size, warranting a novel measurement scale for insight gathering instrumental to policy making and sustainable waste planning. The SIWM-SRIS scale development and validation process is conducted in six main stages. Stages one and two constitute a review of scales in related fields and a systematic literature review (SLR) to verify the known research gap and inform the theoretical direction for the new scale development. Stage three constitutes expert interviews to explore key sustainability motives of waste management stakeholders. The fourth stage is a pilot survey (n = 60) to rank important sustainability indicators. The fifth is a formal survey study (n = 391) to validate the measurement scale. Finally, a case study of a plastic factory in the Emirate of Ajman is conducted for scale validation. For stages four to six, the government waste regulatory arm of Ajman Municipality, businesses in the plastic waste-generating industry, and private industrial waste management businesses in the Emirate are involved. SIWM-SRIS scale exploratory and confirmatory factor analysis and reliability and validity tests reveal three dimensions: environmental (7 items), economic (5 items), and social (3 items). SIWM-SRIS is capable of measuring sustainability motives among industrial waste management stakeholders in small, rapidly industrialising states. The findings are validated through triangulation, construct validity, discriminant validity and other reliability benchmarks, including Cronbach’s Alpha and Composite reliability. The SIWM-SRIS scale is an innovative tool that uniquely addresses the distinct challenges of sustainable industrial waste management in small, rapidly industrialising states, filling a critical gap in existing research. It provides firm grounds for industrial waste management evaluation, performance benchmarking, and policy planning in small, rapidly industrialising states.

考虑到工业废物管理利益相关者群体的观点，本文开发并验证了一个衡量小型，快速工业化国家可持续工业废物管理的量表（SIWM-SRIS）。小国由于土地面积小，在管理工业废物方面遇到了独特的脆弱性，因此需要一种新的衡量尺度来收集见解，有助于政策制定和可持续废物规划。SIWM-SRIS规模开发和验证过程分为六个主要阶段。第一阶段和第二阶段是对相关领域的量表进行回顾和系统的文献回顾（SLR），以验证已知的研究差距，并为新量表的发展提供理论方向。第三阶段由专家访谈组成，探讨废物管理持份者的主要可持续发展动机。第四阶段是试点调查（n = 60），对重要的可持续性指标进行排名。第五是正式的调查研究（n = 391）来验证测量量表。最后，以阿治曼酋长国的一家塑料厂为例进行了规模验证。在第四至第六阶段，阿治曼市政府废物管理部门、塑料废物产生行业的企业以及阿联酋的私营工业废物管理企业都将参与其中。SIWM-SRIS量表探索性和验证性因子分析以及信度和效度检验揭示了三个维度：环境（7个项目）、经济（5个项目）和社会（3个项目）。SIWM-SRIS能够在快速工业化的小国中衡量工业废物管理利益相关者的可持续性动机。研究结果通过三角测量、结构效度、判别效度和其他信度基准（包括Cronbach 's Alpha和Composite信度）进行验证。SIWM-SRIS规模是一种创新工具，它独特地解决了小型、快速工业化国家可持续工业废物管理的独特挑战，填补了现有研究中的一个关键空白。它为快速工业化的小国的工业废物管理评估、绩效基准和政策规划提供了坚实的基础。

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引用次数: 0

GIS-based optimization of solid waste collection points and routes: A case study of Majengo Ward, Sumbawanga Municipality, Tanzania 基于gis的固体废物收集点和路线优化：坦桑尼亚松巴旺加市马金戈区案例研究

IF 3.9

Cleaner Waste Systems

Pub Date : 2025-08-05 DOI: 10.1016/j.clwas.2025.100372

Muhajir Mussa Kwikima , Fortunata Ngole

This study investigates the potential of Geographic Information Systems (GIS) and optimization techniques to improve municipal solid waste management in Sumbawanga Municipality, Tanzania. While GIS applications in waste management are established, scalable models for secondary cities in resource-limited African contexts remain understudied. The research focuses on Majengo Ward, a rapidly urbanizing area with an inadequate waste collection system. Through a mixed-methods approach, the study bridges this gap by proposing solutions to enhance waste collection coverage, reduce environmental impact, and optimize operational efficiency. Spatial analysis reveals significant inefficiencies in the existing system, with only 40 % of the 3.5 tonnes of daily waste collected. Using GIS and suitability modeling, seven new collection points are strategically identified, considering population density, road proximity, and environmental risks. Optimization algorithms (p-median and p-center) design efficient routes, minimizing distances and travel times. The proposed system is projected to increase waste collection coverage by 90 %, reduce fuel consumption by 25 %, and decrease driver working hours by 30 %. The cost-benefit analysis demonstrates significant economic and environmental benefits, with a payback period of 3.5 years. This study highlights the effectiveness of data-driven approaches in addressing waste management challenges in developing cities. The findings offer valuable insights for policymakers, planners, and waste management practitioners, contributing to sustainable urban development in Tanzania and similar contexts.

本研究探讨了地理信息系统（GIS）和优化技术在坦桑尼亚Sumbawanga市改善城市固体废物管理方面的潜力。虽然地理信息系统在废物管理方面的应用已经确立，但在资源有限的非洲情况下，二级城市的可扩展模型仍未得到充分研究。这项研究的重点是Majengo区，这是一个快速城市化的地区，但垃圾收集系统不完善。通过混合方法，该研究提出了提高废物收集覆盖率、减少环境影响和优化运营效率的解决方案，从而弥合了这一差距。空间分析显示，现有系统效率低下，每天收集的3.5吨垃圾中只有40% %。利用地理信息系统和适宜性建模，考虑到人口密度、道路邻近性和环境风险，战略性地确定了七个新的收集点。优化算法（p-median和p-center）设计有效的路线，最小化距离和旅行时间。该系统预计将增加90% %的垃圾收集覆盖率，减少25% %的燃料消耗，减少30% %的司机工作时间。成本效益分析表明，该项目具有显著的经济效益和环境效益，投资回收期为3.5年。这项研究强调了数据驱动方法在解决发展中城市废物管理挑战方面的有效性。研究结果为政策制定者、规划者和废物管理从业者提供了宝贵的见解，有助于坦桑尼亚和类似国家的可持续城市发展。

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引用次数: 0

Sustainable concrete development using groundnut shell ash: A response surface methodology approach 花生壳灰可持续混凝土开发：响应面方法

IF 3.9

Cleaner Waste Systems

Pub Date : 2025-08-02 DOI: 10.1016/j.clwas.2025.100379

Raghavendra Mahesh , Shiva Kumar G , Ujwal M.S. , Likheeth J. , Vinay A. , Poornachandra Pandit

Climate change and global warming are primarily driven by carbon dioxide (CO₂) emissions from fossil fuel combustion across energy, transportation, and industrial sectors. Among industrial contributors, the production of ordinary Portland cement (OPC) is a significant source of emissions due to its energy-intensive processes and chemical decomposition of limestone. Cement is widely used in concrete because of its cost-effectiveness and reliability; however, its high energy consumption and environmental impact necessitate the search for sustainable alternatives. Previous studies have explored various supplementary cementitious materials (SCMs), such as fly ash, silica fume, and groundnut shell ash (GSA), but many lack optimization in their application, particularly in tailoring the GSA content with watercement (w/c) ratios to achieve optimal workability and mechanical performance. Additionally, existing research often overlooks systematic experimental designs that comprehensively evaluate fresh and hardened properties via advanced statistical techniques. This study addresses these gaps by employing response surface methodology (RSM) to optimize concrete mixtures incorporating GSA as a partial cement replacement (3–12 %) with w/c ratios ranging from 0.4–0.6. Workability (slump, Vee–Bee consistency, compaction factor) and mechanical properties (compressive strength, flexural strength, and split tensile strength) were evaluated according to Indian standards. The results demonstrated that the GSA significantly influenced the concrete properties, with an optimal mixture of 6.27 % GSA and a 0.42 w/c ratio achieving a desirability of 66.38 %. This study provides a data-driven approach to enhancing concrete sustainability by utilizing agricultural waste while addressing key shortcomings in prior research. The optimized concrete mixture not only demonstrated enhanced mechanical and fresh properties but also significantly contributes to the broader agenda of sustainable construction. By incorporating groundnut shell ash (GSA), an agricultural waste, this study promotes circular economy practices and reduces reliance on traditional cement, which is a major contributor to global CO₂ emissions. The findings underscore the feasibility of replacing a portion of OPC with GSA without compromising performance, thereby supporting the transition to greener infrastructure materials. This research lays the groundwork for scalable, eco-efficient concrete production, especially in regions with abundant agricultural residues.

气候变化和全球变暖主要是由能源、交通和工业部门燃烧化石燃料产生的二氧化碳（CO₂）排放驱动的。在工业排放源中，普通波特兰水泥（OPC）的生产是一个重要的排放源，因为它的能源密集型过程和石灰石的化学分解。水泥因其成本效益和可靠性被广泛应用于混凝土中；然而，它的高能耗和环境影响需要寻找可持续的替代品。先前的研究已经探索了各种补充胶凝材料（SCMs），如粉煤灰、硅灰和花生壳灰（GSA），但许多研究都缺乏对其应用的优化，特别是在根据水水泥（w/c）比调整GSA含量以获得最佳的和易性和机械性能方面。此外，现有的研究往往忽略了系统的实验设计，通过先进的统计技术全面评估新鲜和硬化的性能。本研究通过采用响应面方法（RSM）来优化含有GSA作为部分水泥替代品的混凝土混合物（3-12 %），w/c比范围为0.4-0.6，从而解决了这些差距。工作性（坍落度、Vee-Bee一致性、压实系数）和力学性能（抗压强度、抗折强度和劈裂抗拉强度）根据印度标准进行了评估。结果表明，GSA对混凝土性能有显著影响，GSA的最佳配比为6.27 %，w/c比为0.42，达到66.38 %的理想配比。本研究提供了一种数据驱动的方法，通过利用农业废弃物来提高混凝土的可持续性，同时解决了先前研究中的主要缺陷。优化后的混凝土混合物不仅表现出增强的机械性能和新鲜性能，而且对可持续建筑的更广泛议程做出了重大贡献。该研究利用农业废弃物花生壳灰（GSA），促进了循环经济实践，减少了对全球二氧化碳排放主要来源传统水泥的依赖。研究结果强调了在不影响性能的情况下用GSA取代部分OPC的可行性，从而支持向更环保的基础设施材料过渡。这项研究为可扩展的、生态高效的混凝土生产奠定了基础，特别是在农业残留物丰富的地区。

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引用次数: 0

Physical and mechanical characterization of mortar with partial cement replacement by white mud (kamero) 用白泥代替部分水泥砂浆的物理力学特性（kamero）

IF 3.9

Cleaner Waste Systems

Pub Date : 2025-07-31 DOI: 10.1016/j.clwas.2025.100380

Saroj Subedi, Md Tamanna Aalam, Sagar Ranabhat, Prabhat Baral, Laxman Bhujel, Tek Raj Gyawali

With the increasing demand for cement but its production’s effect on CO₂ emission and land degradation, there is a pressing need to find viable alternatives that can partially or significantly replace it. Many studies have investigated the usage of various waste materials for the cement replacement. One promising area of research is focused on white mud (WM), exploring its potential as an effective replacement in construction materials. This study investigates the effectiveness of WM on the physical and mechanical properties of mortar. The control mortar was with water-cement ratio of 0.45 and cement: sand ratio of 1:1.92. The replaced content of WM to cement was 0.0 %, 2.5 %, 5.0 %, 7.5 %, and 10.0 % (by weight of cement). The required physical, mechanical, and durability tests of mortar were conducted. The findings suggest that the optimal replacement percentage is 2.5 %. It increased the 28-day compressive strength by 15.0 %, but decreased the splitting tensile and flexural strengths by 13.7 % and 7.5 %, respectively. The use of WM also caused the increase in the density resulting in the reduction of water absorption. The obtained results suggest that the substitute of cement with WM is viable in both aspects on enhancing the properties of mortar and reducing the cement consumption. Overall, this research highlights the potential of WM as an eco-friendly and effective partial cement replacement, especially at lower substitution levels, which not only enhances the required properties of mortar but also minimizes the cement consumption mitigating the problems of CO₂ emission and land degradation contributing to the sustainable development goals. The implementation of this finding offers multiple benefits, including the production of more sustainable and cost-effective concrete, protection of human health from WM dust through its proper utilization, and the rehabilitation of previously unusable land into fertile ground for increased agricultural productivity.

随着对水泥的需求不断增加，但其生产对二氧化碳排放和土地退化的影响，迫切需要找到可行的替代品，可以部分或大量替代水泥。许多研究调查了各种废材料在水泥替代中的使用情况。一个有前途的研究领域集中在白泥（WM），探索其作为建筑材料的有效替代品的潜力。研究了WM对砂浆物理力学性能的影响。对照砂浆水灰比为0.45，灰砂比为1:1.92。WM对水泥的替代含量（以水泥重量计）分别为0.0 %、2.5 %、5.0 %、7.5 %和10.0 %。对砂浆进行了所需的物理、机械和耐久性试验。结果表明，最佳替代率为2.5 %。28天抗压强度提高15.0 %，但劈裂抗拉强度和抗弯强度分别降低13.7 %和7.5 %。WM的使用还会引起密度的增加，从而导致吸水率的降低。研究结果表明，用WM替代水泥在提高砂浆性能和降低水泥用量两方面都是可行的。总的来说，本研究强调了WM作为一种环保和有效的部分水泥替代品的潜力，特别是在较低替代水平下，它不仅提高了砂浆所需的性能，而且最大限度地减少了水泥消耗，缓解了二氧化碳排放和土地退化问题，有助于实现可持续发展目标。实施这一发现可带来多种好处，包括生产更可持续和更具成本效益的混凝土，通过适当利用WM粉尘保护人类健康，以及将以前无法使用的土地恢复为肥沃的土地，以提高农业生产力。

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引用次数: 0

Forecasting organic waste and biomethane generation potential of a non industrial district of Eastern India: A data-driven approach to sustainable energy and waste management 预测印度东部一个非工业地区的有机废物和生物甲烷产生潜力：可持续能源和废物管理的数据驱动方法

IF 3.9

Cleaner Waste Systems

Pub Date : 2025-07-30 DOI: 10.1016/j.clwas.2025.100378

Anudeb Ghosh , Debasis Maji , Shireen Roy , Saradashree Pal , Aman Basu , Richik GhoshThakur , Srinivasan Balachandran

Waste management is a critical indicator, affecting public health, sanitation, and environmental sustainability, which can improve living standards in disadvantaged communities. The main objective of the study is to estimate population growth and organic waste production and assess the methane production until 2051 in 6 municipalities of Birbhum district. Arithmetic and Geometric Progression were used for population predictions, and Auto Regressive Integrated Moving Average (ARIMA) and Long Short Term Memory (LSTM) models for methane estimation. This study found that Birbhum municipal solid waste (MSW) contains 57–64 % organic material from markets, kitchens, and gardens, varying by municipalities. Results show that Class II municipalities like Bolpur generates 21 Metric Tonnes (MT) of organic waste everyday (364.86 gm per capita in 2021). With a 40 % organic waste collection efficiency, Bolpur can generate 7.67 Gg of methane yearly, expected to increase to 57 Gg/year by 2051, equivalent to 76 hm³ /year of Liquid Petroleum Gas (LPG). By 2051, other municipalities—Sainthia, Rampurhat, Nalhati, Suri, and Dubrajpur—shows high biomethane potential and the predicted LPG-equivalent methane production is 13.82, 19.92, 24.52, 22.95, and 1.78 hm³ respectively. This methane potential is due to exponential population increase and rising per capita MSW generation rates of 548.55, 609, 404.07, 645.38, and 501.45 gm per capita per day (g.p.c.d.) for Sainthia, Rampurhat, Nalhati, Suri and Dubrajpur municipality respectively. The results indicate that Birbhum's organic waste have high Biomethane Potential (BMP), highlighting the need to enhance waste collection and management. Effectively using this resource can boost district socio-economic growth, cleaner energy production, and environmental sustainability.

废物管理是一项关键指标，影响公共卫生、环境卫生和环境可持续性，从而提高处境不利社区的生活水平。该研究的主要目的是估计人口增长和有机废物的产生，并评估到2051年在Birbhum地区的6个城市的甲烷产量。人口预测采用算术和几何级数，甲烷估算采用自回归综合移动平均（ARIMA）和长短期记忆（LSTM）模型。这项研究发现，伯明翰城市固体废物（MSW）含有57-64 %来自市场，厨房和花园的有机材料，因城市而异。结果表明，像Bolpur这样的二级城市每天产生21公吨（MT）有机废物（2021年人均364.86 gm）。Bolpur的有机废物收集效率为40% %，每年可产生7.67 Gg的甲烷，预计到2051年将增加到57 Gg/年，相当于76 hm³ /年的液化石油气（LPG）。到2051年，其他城市——sainthia、Rampurhat、Nalhati、Suri和dubrajpur——显示出较高的生物甲烷潜力，预计液化石油气当量甲烷产量分别为13.82、19.92、24.52、22.95和1.78 hm³ 。这一甲烷潜力是由于人口指数增长和人均城市生活垃圾产生率的上升，分别为Sainthia， Rampurhat, Nalhati， Suri和Dubrajpur市的人均每天（g.p.c.d） 548.55, 609, 404.07, 645.38和501.45 gm。结果表明，birbham的有机废物具有很高的生物甲烷潜力（BMP），突出了加强废物收集和管理的必要性。有效利用这一资源可以促进地区社会经济增长、清洁能源生产和环境可持续性。

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