Hasil untuk "Environmental technology. Sanitary engineering"

Priya I. Hora, Sarah G. Pati, P. McNamara et al.

Quaternary ammonium compounds (QACs) are active ingredients in over 200 disinfectants currently recommended by the U.S. EPA for use to inactivate the SARS-CoV-2 (COVID-19) virus. The amounts of these compounds used in household, workplace, and industry settings has very likely increased, and usage will continue to be elevated given the scope of the pandemic. QACs have been previously detected in wastewater, surface waters, and sediments, and effects on antibiotic resistance have been explored. Thus, it is important to assess potential environmental and engineering impacts of elevated QAC usage, which may include disruption of wastewater treatment unit operations, proliferation of antibiotic resistance, formation of nitrosamine disinfection byproducts, and impacts on biota in surface waters. The threat caused by COVID-19 is clear, and a reasonable response is elevated use of QACs to mitigate spread of infection. Exploration of potential effects, environmental fate, and technologies to minimize environmental releases of QACs, however, is warranted.

Yuwen Zhou, Shiyi Qin, S. Verma et al.

Sarah-Patricia Breen, Robyn Peel, Lauren Rethoret

Childcare is a ubiquitous issue for economic development across Canada, a challenge exacerbated by rural characteristics like low population density, workforce shortages (e.g., early childcare educators), and limited data. New early learning and childcare regulation has and continues to change the policy environment with the goal of increasing the accessibility and affordability of high-quality childcare. These changes have resulted in successes; however, policy changes have also had unintentional consequences for the viability of rural childcare facilities. This article presents the results of a rural case study in the province of British Columbia that aimed to understand the business needs and challenges of rural childcare providers and to use these findings to contribute to the creation of constructive business solutions. Results also identified that the changing policy environment is presenting unanticipated challenges to childcare viability, resulting in a largely unrecognized risk of increasing sector precarity and potential loss of existing rural childcare providers. We identify interventions, both at the regional and provincial scale, that may help in the short term to improve business operations and alleviate unintentional sector vulnerabilities related to changing policy. Interventions include proactive outreach to childcare providers to build relationships and increase knowledge of available support programs, offering in-person one-on-one support, enhancing short-term stability and predictability by providing timelines for policy change, and the creation of on-call or casual workforce services that can easily serve multiple small childcare providers. Keywords: Childcare, rural economic development, policy change _________________________________________________________________  Précarité rurale face à l'évolution des politiques : Garde d’enfants en Colombie-Britannique rurale Résumé Les services de garde d’enfants constituent un enjeu omniprésent pour le développement économique du Canada. Ce défi est exacerbé par les caractéristiques du milieu rural, telles que la faible densité de population, la pénurie de main-d'oeuvre (par exemple, d'éducateurs à la petite enfance) et le manque de données. La nouvelle réglementation en matière d'apprentissage et de garde des jeunes enfants a modifié et continue de modifier le contexte politique afin d'accroître l'accessibilité et l'abordabilité de services de garde de qualité. Ces changements ont donné lieu à des succès; toutefois, ils ont également eu des conséquences imprévues sur la viabilité des services de garde en milieu rural. Cet article présente les résultats d'une étude de cas menée dans une région rurale de la province de la Colombie-Britannique. Cette étude visait à comprendre les besoins et les défis des fournisseurs de services de garde d’enfants en milieu rural et à utiliser ces résultats pour contribuer à l'élaboration de solutions commerciales constructives. Les résultats ont également révélé que l'évolution du contexte politique pose des défis imprévus à la viabilité des services de garde d’enfants, ce qui entraîne un risque largement méconnu d'accroissement de la précarité du secteur et de disparition potentielle des prestataires de services de garde d’enfants existants en milieu rural. Nous avons recensé des interventions, tant à l'échelle régionale que provinciale, susceptibles d'améliorer à court terme les activités commerciales et d'atténuer les vulnérabilités involontaires du secteur liées aux changements de politiques. Ces interventions comprennent des démarches proactives auprès des prestataires de services de garde d’enfants afin d'établir des relations et d'accroître leur connaissance des programmes de soutien disponibles, l’offre d’un soutien individualisé en personne, une meilleure stabilité et prévisibilité à court terme grâce à la mise en place d'échéanciers pour les changements de politiques, et la création de services de main-d'oeuvre occasionnelle ou sur appel pouvant facilement desservir plusieurs petits prestataires de services de garde d’enfants. Mots-clés : garde d'enfants, développement économique rural, changement de politiques

Gabriel C Rau, José Bastías Espejo, R Ian Acworth et al.

Groundwater (GW) is the primary freshwater resource in many of the world’s drylands, sustaining millions of people and supporting agriculture and ecosystems where surface water is scarce or unreliable. Recharge in these regions is highly episodic and occurs mainly through ephemeral streams (i.e. focused recharge), yet the mechanisms that determine whether surface flows contribute to aquifer replenishment remain poorly constrained. A common assumption is that large floods dominate recharge, but evidence from long-term monitoring is limited and inconclusive. We combine a unique hydrogeological monitoring dataset from the arid zone (Fowlers Gap in western New South Wales, Australia) with numerical modelling of vadose zone processes to assess the controls on focused GW recharge. Our results show that even extreme floods that overtopped piezometers did not produce measurable recharge at the water table. In contrast, significant recharge occurred only during a temporal cluster of moderate flow events in 2022. Numerical simulations confirm that temporal flow clustering produces longer periods of ephemeral streamflow, which progressively wet the vadose zone, overcome evapotranspiration (ET)-driven moisture deficits, and increase relative hydraulic conductivity, enabling percolation to the water table. Isolated floods, by contrast, largely saturate only shallow sediments and water is subsequently lost to ET. By explicitly incorporating ET, our modelling provides a more realistic representation of dryland recharge dynamics and highlights the roles of antecedent conditions and vadose zone properties. These findings demonstrate that recharge is not governed by rainfall totals or intensity alone, but critically depends on the timing and sequence of storm events. The implications for climate change assessments and water management are substantial, as projected shifts toward more intense but less frequent rainfall may reduce opportunities for clustering and thereby limit GW replenishment. Process-based modelling and event-scale analyses are therefore essential for reliable recharge projections and sustainable GW management in drylands.

M. Kurade, Yoon‐Hee Ha, Jiu-Qiang Xiong et al.

Abstract The industrial revolution in the production of pharmaceuticals and personal care products (PPCPs) has significantly improved public health in recent years. However, this development has also led to water pollution because of the unintentional disposal of these synthetic chemicals, creating unacceptable sanitary conditions. Conventional wastewater treatment systems can eliminate most of the contaminants, however these are not efficient in removing PPCPs. Plant-based remediation is a simple, yet very effective and eco-friendly approach that can complement existing wastewater treatment. Phytoremediation of emerging contaminants is relatively new, and various key concepts including the uptake and detoxification mechanisms remain relatively unexplored compared with microbial processes. This review comprehensively discusses the latest studies on the biochemistry and application of phytoremediation for the removal of PPCPs from wastewater, focusing on the mechanisms of uptake and detoxification through the enzymatic biotransformation of PPCPs and the latest field applications using innovative engineered systems. Future research recommendations are addressed, including the need of topics warranting investigation in PPCPs interactions with plant tissues, their metabolic transformation in plants, development of new predictive uptake models and futuristic advancements involving the cutting-edge methodologies in genetic engineering for the realization of advanced phytoremediation technologies. This review is an effort to gather the scattered information on research updates of phytoremediation in recent decade to present an outlook of the emerging, green biotechnology for the rehabilitation of the environment.

P. Raja, B. Parrthipan, S. Babu et al.

Additive manufacturing has rapidly emerged as a transformative and inherently sustainable technology in engineering. It enables the fabrication of components with minimal or near-zero material wastage. While additive manufacturing was initially focused on metals, it now includes polymers, ceramics, composites, and biomaterials, providing an efficient platform to produce sustainable materials. This review provides a comprehensive overview of additive manufacturing techniques for non-metal materials and emphasises their potential to minimise waste, promote resource circularity, and support sustainable production. Particular attention is given to polymer-based techniques such as fused deposition modelling, stereolithography, and selective laser sintering. These techniques offer design flexibility, reduced material wastage, and compatibility with recycled and bio-based feedstocks. This review highlights the major advantages and practical applications of polymer-based materials in biomedical engineering, microelectronics, flame-retardant and conductive systems, and multifunctional composites. While most limitations are presently observed in flame-retardant systems, a comparative discussion is also provided for the other application domains to maintain balance across the sections. Additionally, emerging research on sustainable and bio-derived polymers such as PLA and PHB reinforced with carbonised biomass or eco-friendly conductive fillers is introduced to emphasise environmentally responsible pathways for developing next-generation conductive materials. Overall, this review highlights additive manufacturing as a sustainable pathway for material valorisation and innovation within waste-to-material and waste-to-energy frameworks.

S. A. Ansari, Apurva Ramteke, R. Sawarkar et al.

Food waste (FW) is a critical global issue, exacerbating environmental degradation and resource scarcity. Traditional FW management methods are often inefficient and unsustainable. This review highlights advances in microbial community engineering for FW valorization, focusing on synthetic biology, metagenomics, metabolic engineering, and electro-fermentation. Engineered microbial consortia enhance the breakdown of complex organics while producing bioenergy, bioplastics, and organic acids. Metagenomics enables precise metabolic optimizations, and electro-fermentation improves bioconversion yields. These systems outperform conventional methods in reducing greenhouse gases, recovering nutrients, and promoting a circular bioeconomy. Challenges persist, including microbial stability, scalability, and incomplete knowledge of interspecies interactions. Future research should integrate AI and machine learning to design robust synthetic consortia and optimize metabolic pathways. Scaling electrochemical technologies (e.g., microbial electrosynthesis) requires further validation. Standardized biosafety protocols, techno-economic analyses, and supportive policies are essential for industrial adoption. Interdisciplinary collaboration is crucial to address these gaps. In conclusion, microbial engineering offers a sustainable FW management solution, improving biodegradation efficiency and resource recovery. Future efforts must prioritize scalable, stable systems with real-time monitoring and ecological safety. Overcoming these challenges will enable engineered microbes to mitigate environmental impacts, generate renewable energy, and advance a resource-efficient future.

George F. Antonious, Anjan Nepal, Basanta Neupane

The application of animal manure and organic soil amendments as an alternative to expensive inorganic fertilizers is becoming more prevalent in the USA and worldwide. A field experiment was conducted on Bluegrass–Maury silty loam soil at the Kentucky State University Research Farm using the Kennebec variety of white potato (<i>Solanum tuberosum</i>) under Kentucky climatic conditions. The study involved 12 soil treatments in a randomized complete block design. The treatments included four types of animal manures (cow manure, chicken manure, vermicompost, and sewage sludge), biochar at three application rates (5%, 10%, and 20%), and native soil as control plots. Additionally, animal manures were supplemented with 10% biochar to assess the influence of combining biochar with animal manure on the accumulation of heavy metals in potato tubers. The study aimed to (1) determine the concentration of seven heavy metals (Cd, Cr, Ni, Pb, Mn, Zn, Cu) and two essential nutrients (K and Mg) in soils treated with biochar and animal manure, and (2) assess metal mobility from soil to potato tubers at harvest by determining the bioaccumulation factor (BAF). The results revealed that Cd, Pb, Ni, Cr, and Mn concentrations in potato tubers exceeded the FAO/WHO allowable limits. Whereas the BAF values varied among the soil treatments, with Cd, Cu, and Zn having high BAF values (>1), and Pb, Ni, Cr, and Mn having low BAF values (<1). This observation demonstrates that potato tubers can remediate Cd, Cu, and Zn when grown under the soil amended with biochar and animal manure.

Agnese Zaghini, Silke Flindt Badino, Stefanie Neun et al.

Direct air capture (DAC) has been widely advocated as a key tool in the strive towards zero emissions. Here we present the first systematic data on enzyme assisted DAC and show that CO2 absorption rate tripled upon addition of carbonic anhydrase (CA) at micromolar concentrations, reaching a capture efficiency of 60%. We found that CA promoted high absorption efficiency as the flow rate was raised and we rationalized these observations based on molecular mechanism of enzyme assisted capture. Furthermore, measurements of absorption rates in KOH and carbonate with 1 μM CA showed comparable kinetics suggesting that enzyme application could offset kinetic advantages of hydroxides. These attributes may eventually pave the way for DAC in sorbents with low regeneration energies.

Hongxia Lin, Jinmo Wu, Fan Zhou et al.

Semiconductor photocatalytic technology has shown great prospects in converting solar energy into chemical energy to mitigate energy crisis and solve environmental pollution problems. The key issue is the development of high-efficiency photocatalysts. Various strategies in the state-of-the-art advancements, such as heterostructure construction, heteroatom doping, metal/single atom loading, and defect engineering, have been presented for the graphitic carbon nitride (g-C3N4)-based nanocomposite catalysts to design their surface chemical environments and internal electronic structures to make them more suitable for different photocatalytic applications. In this review, nanoarchitecture design, synthesis methods, photochemical properties, potential photocatalytic applications, and related reaction mechanisms of the modified high-efficiency carbon nitride-based photocatalysts were briefly summarized. The superior photocatalytic performance was identified to be associated with the enhanced visible-light response, fast photoinduced electron-hole separation, efficient charge migration, and increased unsaturated active sites. Moreover, the further advance of the visible-light harvesting and solar-to-energy conversions are proposed.

Ovie Vincent Erhueh, Chukwuebuka Nwakile, Oluwaseyi Ayotunde Akano et al.

As the global energy transition accelerates, Liquefied Natural Gas (LNG) projects are under increasing pressure to reduce their carbon footprint. Carbon capture, utilization, and storage (CCUS) technologies have emerged as a critical tool in mitigating greenhouse gas emissions and promoting sustainability within the LNG industry. This paper explores the integration of carbon capture technologies in LNG projects, focusing on engineering solutions that enhance environmental performance while ensuring operational efficiency. By examining the role of CCUS in LNG projects, the paper highlights how innovative design and process optimization can contribute to a greener future. The discussion delves into key engineering lessons learned from successful LNG projects that have implemented carbon capture systems. These include advancements in process design, material selection, and the integration of renewable energy sources to power carbon capture facilities. Additionally, the paper evaluates the economic and environmental benefits of CCUS deployment, such as cost reductions from enhanced resource recovery and significant emissions reductions. It also considers the challenges posed by large-scale implementation, including infrastructure requirements, regulatory frameworks, and public perception. Furthermore, the paper outlines how LNG projects, through the adoption of carbon capture technologies, align with global climate goals and contribute to sustainable development. The potential for scaling up these technologies and replicating them across various energy-intensive industries is also discussed. The paper emphasizes that achieving sustainability in LNG projects is not only possible but essential for the industry's future viability. Ultimately, this paper underscores the need for continuous innovation in carbon capture technologies and the importance of collaborative efforts among stakeholders, including governments, industry leaders, and engineers, to drive progress toward a sustainable energy future.

Yining Zhang, Yifan Xie, Guanyixuan Zhao et al.

Fluid mechanics, a fundamental discipline within engineering, has gained increasing significance across various fields due to continuous advancements in engineering science and technology. Its principles and methodologies find widespread application in aerospace, energy development, environmental protection, biomedicine, and beyond, serving as a cornerstone for technological progress. However, despite the expanding applications of fluid dynamics, challenges persist in integrating theory with practice in certain domains. This paper aims to synthesize exemplary applications of fluid mechanics in diverse engineering fields, illustrating its crucial role in addressing practical challenges. Additionally, it explores current problems and limitations in fluid dynamics applications, such as numerical simulation accuracy, multiphase flow complexity, and fluid-structure interaction nonlinearity. Furthermore, recommendations are provided for future fluid mechanics development, emphasizing interdisciplinary collaboration, advanced computational methods, and the seamless integration of experimental techniques and theoretical research. Through these discussions, this paper endeavors to offer insights into the ongoing development of fluid mechanics, fostering its broader application and deeper exploration within engineering disciplines.

Avijit Dasgupta, Muhammad Mohiul Islam, Omar Faruq Nahid et al.

This systematic review examines the influence of engineering management practices on cultivating and sustaining a strong safety culture in chemical and petrochemical plants. Given the high-risk nature of these industries, establishing a robust safety culture is essential for mitigating operational hazards, reducing risks, and preventing accidents that can have serious human and environmental impacts. The review synthesizes findings from 135 peer-reviewed studies, focusing on key elements such as leadership commitment, employee engagement, regulatory compliance, safety management systems, and the integration of advanced technologies like automation and artificial intelligence (AI). The results highlight that safety performance in these industries is closely linked to management's active involvement in promoting safety practices, clear communication strategies, and the continuous assessment and improvement of safety protocols. Engineering managers play a critical role in driving safety initiatives and fostering an organizational culture where safety is a shared responsibility. The review also underscores the importance of regulatory compliance as a foundation for safety, while emphasizing that the most successful organizations go beyond compliance to embed safety deeply into their operational practices. Technological advancements, particularly in automation and real-time monitoring, were found to significantly enhance safety outcomes by enabling proactive risk identification and mitigation. Overall, this review offers valuable insights and practical guidelines for engineering managers aiming to strengthen safety protocols, reduce risks, and enhance safety performance in high-hazard industrial environments.

Feng-He Li, Zishan Liang, Hong Sun et al.

Uranium is the primary fuel for nuclear energy, critical for sustainable, carbon-neutral energy transitions. However, limited terrestrial resources and environmental risks from uranium contamination require innovative immobilization and recovery solutions. In this work, we present a novel uranium recovery method using programmable electroactive living materials (ELMs). Utilizing Shewanella oneidensis, this approach leverages the intrinsic extracellular electron transfer capability of exoelectrogenic species, combining their adaptability and programmability with the robustness of engineered multicellular systems. These exoelectrogenic cells were endowed to selectively capture and enhance U(VI) reduction by expressing uranyl-binding proteins, coupled with a reconfigured transmembrane Mtr electron nanoconduit. By incorporating biofilm-promoting circuits, we improved cell-to-cell interactions and biofilm formation, enabling the stable assembly of ELMs with robust structural integrity. The ELMs demonstrated superior electrogenic activity, achieving a 3.30-fold increase in current density and a 3.15-fold increase in voltage output compared to controls in microbial electrochemical and fuel cells. When applied for uranium recovery, the ELMs exhibited robust U(VI) capture, reduction, and accumulation capabilities, with a maximum capacity of 808.42 μmol/g. This work not only provides a versatile and environmentally friendly solution for uranium recovery, but also highlights the potential of ELMs in sustainable environmental and energy technologies.

Muhammad Ade, Kurnia Harahap, Hamka Wakkang et al.

This study investigates the role of geospatial technologies in enhancing the efficiency and effectiveness of civil engineering projects. Geospatial technologies, including Geographic Information Systems (GIS), remote sensing, and spatial analysis, have revolutionized the field of civil engineering by providing critical tools for planning, design, construction, and management of infrastructure projects. The integration of these technologies enables accurate terrain mapping, real-time monitoring, and data-driven decision-making, which are crucial for ensuring the safety, sustainability, and resilience of modern infrastructure. This research aims to explore the applications of geospatial technologies in various civil engineering projects, including highway planning, urban development, and environmental monitoring. The study also examines the potential benefits and limitations of these technologies and provides recommendations for their effective integration into civil engineering practices. By understanding the impact of geospatial technologies on civil engineering projects, this research aims to contribute to the development of more efficient, sustainable, and resilient infrastructure that supports the needs of modern society.

Nadeem Baig, Sani I. Abba, Jamil Usman et al.

Optimizing membrane performance for efficient water treatment is crucial for sustainable development and environmental protection, aligning with UN SDGs. This study involves experimental design, statistical reliability of small data, and explainable machine learning (ML) using SHAP (Shapley Additive Explanations). The research uses ML models and statistical tests to ensure data reliability and stationarity and investigate various membranes’ fouling and separation efficiency (MX-CM, PDMX-CM, and SPDMX-CM). Stationarity tests, including the Augmented Dickey–Fuller (ADF) and Phillips–Perron (PP) tests, revealed that MX-CM is stationary at level (I(0)), while PDMX-CM and SPDMX-CM required first differencing (I(1)) to achieve stationarity. SHAP analysis showed that in the fouling study, higher values of PDMX-CM and MX-CM positively influenced model predictions, with SHAP values of +0.09 for Cycle, −0.06 for PDMX-CM, and −0.06 for MX-CM. In the separation efficiency study, Cycle had a neutral impact (0.00), PDMX-CM had a slight positive effect, and MX-CM had a slight negative impact. These findings highlight the importance of ensuring data stationarity and utilizing SHAP for model explainability in predicting membrane performance. Accurate preprocessing and model interpretation enhance decision-making and optimization in membrane fouling and separation efficiency studies, ensuring robust and reliable ML models.

Rayees Ahmed, Taha Shamim, Joshal Kumar Bansal et al.

Climate change poses significant challenges to the Himalayas, a region characterised by its fragile ecosystems and vulnerable communities dependent on environmental resources. Accurate climate data are crucial for understanding regional climatic variations and assessing climate change impacts, particularly in areas with limited observational networks. This study represents a pioneering effort in evaluating climatic fluctuations in the Jhelum basin, located in the North Western Himalayas, by utilising a diverse range of gridded meteorological datasets (APHRODITE, CHIRPS, CRU, and IMDAA) alongside observed climate data from the Indian Meteorological Department. The primary goal is to identify the most effective gridded climate data product for regions with limited data and to explore the potential of combining gridded data sets with observed data to understand climatic variability. Findings indicate a consistent upward trend in temperature across all datasets, with varying rates of increase. CRU records a rise of 1 °C in Tmax and 1.6 °C in Tmin, while APHRODITE shows a Tmean increase of approximately 1 °C. IMDAA reports increases in Tmax and Tmin. Observed mean annual Tmax and Tmin show net increases of 1 °C and 0.6 °C, respectively. Regarding precipitation, all datasets except IMDAA exhibit an increasing trend, contrary to observed data, which decreases from 1266 mm to 1068 mm over 40 years. CHIRPS, CRU, and APHRODITE display increasing trends, while IMDAA aligns closely with observed data but tends to overestimate precipitation by about 30%. Our research identifies IMDAA as the most suitable gridded climate data for the Jhelum basin in the North-western Himalayas. Despite some discrepancies in precipitation trends, IMDAA closely aligns with observed data, providing valuable insights for scholars and policymakers navigating climate data uncertainties in complex environments. Our findings contribute to informed decision-making and effective climate change mitigation strategies in the region.

Xiaoli Ren, Tao Feng, Juan Lei et al.

The activated carbon was prepared with the Cephalosporin Mycelia Residue (CMR) obtained from Wichita Pharmaceutical Co., Ltd., and the adsorption kinetics and thermodynamics of Cefoperazone Sodium and Sulbactam Sodium (CS &amp; SS) onto the activated carbon derived from the CMR were investigated. The results of activated carbon characterization showed that the iodine value of the activated carbon derived from the CMR was 1044 mg·g−1, the SBET was 596 m2·g−1, electron microscope scanning showed that the surface of activated carbon was porous and heterogeneous. Four kinds of kinetic models and four kinds of thermodynamic models were used to fit the experimental data of adsorption kinetics and thermodynamics, respectively. In addition, the ΔG0, ΔH0 and ΔS0 was calculated and analysised. The results showed that pseudo-second order model fitted the best to the adsorption kinetic data, indicating that the adsorption rate was proportional to the square of the adsorption site. Redlich-Peterson and Langmuir isotherm model fitted the best to the adsorption thermodynamic data, indicating that CS &amp; SS was mainly adsorbed in single molecular layer on the surface of activated carbon. ΔH0> 0 indicated that the adsorption was endothermic, high temperature was conductive to the adsorption of CS &amp; SS.

J. Balsa-Barreiro, Shaojian Wang, Jianjun Tu et al.

MITMedia Lab, Massachusetts Institute of Technology, Cambridge, MA, United States, CITIES, Division of Engineering, New York University Abu Dhabi, Abu Dhabi, United Arab Emirates, Guangdong Provincial Key Laboratory of Urbanization and Geo-simulation, School of Geography and Planning, Sun Yat-Sen University, Guangzhou, China, College of Economics and Management, Southwest University, Chongqing, China, School of Architecture, Southeast University, Nanjing, China

Muyiwa Lawrence Adedara, Ridwan Taiwo, Hans-Rudolf Bork

The annual volume of waste generated in sub-Saharan Africa (SSA) increased from 81 million tonnes to 174 million tonnes per year between 2012 and 2016 and is projected to reach 269 million tonnes in 2030. In 2018, SSA’s municipal solid waste (MSW) collection coverage was estimated at 44%. Concerned that the waste generation rate outweighs the collection pace, we conducted a systematic review of studies on MSW collection to examine the current situation in the region concerning the waste collection and coverage rates and to highlight the impediments to rapid progress in waste collection using the lens of four cities. Findings reveal that, despite the involvement of private waste collectors, collection and coverage rates are still below the desired 100% with backlogs of uncollected waste in public spaces, especially in low-income neighbourhoods where coverage remains abysmally low. This study fortifies the systematic discussion on MSW collection and coverage rates by conducting a meta-analysis. The result of the analysis shows that the waste collection and coverage rates are 65% and 67% in SSA, respectively. Aside from the paucity of data on waste generation rate and characterisation, most available data are incongruent. The review further shows that although several studies have been carried out on waste disposal, waste treatment and recycling in SSA studies directly focused on MSW collection are still few, leaving room for more research in this area. The review offers suggestions on how collection and coverage rates can be increased and equally proposes a strategy for reducing scavenging activities in the region’s unsanitary landfills, given its concomitant health impacts on the scavengers.