Circular economy

This study presents a unique methodology for investigating the properties of Metakaolin Coarse Aggregates (MCA). The NaOH ratios were varied as 8M, 10M, 12M, and 14M, while the NaOH to Na 2SiO 3 ratio was maintained at 0.5 entire study. The liquid-to-binder ( L/B) ratios set at 0.3, 0.35, and 0.4...

One of the most widely cultivated crops in the world is grapevine knowing that about 77.8 million tons of grapes are produced worldwide each year . Both of vine growing, pruning, and winemaking generate a vast quantity of wastes and byproducts such as skin, seed, and canes. Grape canes include a...

Recently, several earlier works conducted research works dedicated to replacing fossil-based fuels with environmentally friendly ones. The goal of the research is to construct a multivariate linear regression model for the attributes of a four-cylinder diesel engine fueled by biodiesel. In this...

Owing to the order of the day, we are searching for an eco-friendly binding ingredient instead of cement, which is now universally used in concrete. Almost everyone extensively exploits construction materials due to their good durability and compressive characteristics. The present study examines...

The study conducted a practical examination to evaluate the influence of high temperatures on the strength and repetitive impact performance of Polypropylene fiber-reinforced Engineered Cementitious Composites (ECCs). Compressive and bending strength were examined using cylindrical and beam-shaped...

Efforts have been put forth in the past to develop sustainable construction material by reducing the use of cement and river sand which can directly provide a positive impact on our ecosystem. In this work, an attempt is made to develop a sustainable a geopolymer composites with the use of fly ash...

Efficient valorization of plastic waste is widely investigated by numerous researchers. The need for an alternate to conventional aggregate in concrete production has led to the evolution of numerous artificial aggregates. This research investigates the impact of adverse environmental exposure...

In this investigation, coconut shell, a lightweight agricultural waste, is used to completely replace coarse material. Based on previous findings, it is suggested that coconut shell be used as coarse aggregate in structural lightweight concrete. Therefore, the purpose of the study was to develop...

Wastewater pollution is a major concern due to organic matter, pesticides, and other contaminants. Untreated discharge of this wastewater can pollute water resources and harm the environment. A data-driven approach for optimizing wastewater treatment systems and ensuring recycled water's safety and...

Key features for the quality assertion of geopolymer composites are the vital strength characteristics of geopolymer composites. In this work, an artificial neural network data-driven model was employed for predicting 28-day vital strength characteristics for geopolymer composites incorporated with...

As the world population is expected to increase significantly, there is a greater need for housing and, as a result, building materials. Conventional manufacturing methods for materials such as concrete involve substantial energy usage and substantial release of carbon emissions, which contribute to...

Green nanotechnology is a multidisciplinary field that has emerged as a rapidly developing research area, serving as an important technique that emphasizes on making procedures that are clean, non-hazardous, and especially environment friendly, in contrast with chemical and physical methods...

In contemporary industrialization, the prevalent occurrence of energy crises and emissions poses significant challenges, necessitating the exploration of alternative fuel sources and the implementation of measures to minimize hazardous emissions. These efforts are crucial for attaining the...

The textile industry, vital in the country's industrialization and playing a crucial role in the national economy, generates solid byproducts known as textile sludge. Integrating waste into stabilized soils, along with textile sludge (TS), fly ash (FA), and asphalt additives, offers scientific...

Industrial waste in engineered concrete mixes is an enormous step towards sustainable development. Polyurethane foam waste (PUFW) is mainly generated by the refrigeration, automobile, and construction industries. Day by day, large amounts of PUFW are incinerated and disposed of in landfills, which...

Critical elements are essential in a variety of high-tech applications. In the context of the circular economy, demand has arisen for technologies that are able to recover high-tech metals from wastes and byproducts. The aim of the present study is to investigate the leaching potential of critical...

This research was conducted to investigate the possibility of producing compost from the residues of rapeseed, wheat, cucumber, and eggplant and evaluate the effect of biocompost produced and enriched with zinc and manganese on strawberry vegetative growth indices under drought stress. For this...

The global demand for plastic has risen, driven by plastic-based goods, exerting strain on the existing waste treatment infrastructure. Plastics typically consist of synthetic and semi-synthetic materials, mainly composed of polymers. Plastics include lightweight, cost-effective, easily...

A dry mix (solution-free) alkali-activated slag (a primary cementitious material) and/or fly ash based binder composition is developed that can be cast in-site and consequently cured at ambient temperature. Mortar specimens were cast by mixing slag and or fly ash, river sand, powder form alkaline...

Mine waste management has become a global concern due to its environmental and health impacts, as well as the high cost of disposal. Recent advancements focus on recycling mine waste into resources using effective conservation methods and waste management systems. The building sector, a major...

Chitosan-doped copper oxide and zinc oxide nanoparticles (CuO-CS-ZnO NPs) were prepared utilizing sol-gel synthesis route. Chlorophyll was added in the process of making NPs to enhance the effects of these NPs. The prepared NPs were thoroughly analyzed using advanced techniques including X-ray...

The construction industry has been identified as a major contributor to environmental degradation, particularly through the generation of waste. Unsustainable production and consumption patterns in the construction industry have resulted in high amounts of waste, which is often disposed of in...

The demand for sustainable concrete in civil infrastructure operations grows by the day, resulting in the use of agricultural and industrial byproducts and controlling high-cost nanomaterials. Ternary blended concrete is an excellent alternative to conventional concrete for long-term development by...

The present work investigated the biodegradable polymer composite through the injection molding method. The matrix material of polylactic acid (PLA) and reinforcement particulates of novel Saccharum spontaneum (SS) were incorporated into the polymer matrix in the range of 5 % to 25 %. In addition to...

This study uses green, environmentally friendly methods to synthesize manganese oxide nanoparticles (MnO-NPs) that can be applied on mild steel as a safe and eco-friendly material with corrosion inhibition attributes. Mukia madaraspatana leaf extract is effective in the green synthesis of Mno-NPs...

The use of active and recyclable catalysts is advantageous for catalytic biodiesel synthesis from waste vegetable oils which is in demand owing to frequent calls on environmental pollution and for clean renewable energy production. For this study, homogenous catalysts are effective at converting...

In the current study, the effect of silicon dioxide (SiO2) nano-additive mixed with Orange peel oil (OPO) as Biodiesel was investigated in relation to the operation and emission characteristics of a diesel engine. Orange peel oil was extracted from the orange Peel waste by using steam distillation...

The flow properties of the binary cement paste system added with supplementary cementitious materials, effect of polycarboxylate based superplasticizer dosage and their influence on the yield stress and the plastic viscosity were studied. The cementitious materials under the study are silica fume...

The generational cohorts known as Millennials and Generation Z exhibit distinct behaviors and attitudes, differing significantly from older generations in various aspects including environmental perceptions and purchasing behaviors. Notably, organic foods are sometimes associated with luxury, as...

Concrete is an indispensable construction material renowned for its versatility and durability, yet its traditional components pose significant environmental challenges. The cement industry is a major emitter of CO2, while the extensive extraction of natural aggregates depletes finite resources. In...

Conventional concrete is heavy which contributes to more dead load, resulting in higher cost of construction, more labour, difficulty in transportation of materials and so on. These impediments can be reduced by using lightweight concrete instead of the conventional concrete. In this study, an...

The green finance market, as an integral part of the circular economy, significantly influences environmental protection and sustainable development. This study explores regulatory issues concerning corporate "greenwashing" behavior in this market, aiming to devise effective regulatory strategies to...

Discrete studies are performed on the reuse of end-of-life tires in the construction industry as their accumulation is a global concern to the environment. In consequence, the desired focus of this work is to understand the interaction of powder derived from recycling process of tire waste which yet...

Banana waste has a high level of volatile matter, making it a promising feedstock for pyrolysis in bio-oil generation. Thus, an oven drying method optimization study was conducted to find the drying process of Saba banana peel on flap opening and fan speed. Based on the ANOVA results, it was found...

The aim of the present study was to synthesize a sorbent material, nanoscale zero valent iron (n ZVI), using red mud as the iron source in the framework of circular economy. The sorbent synthesized was tested for Cd removal from spiked aqueous solutions. For the synthesis of the sorbent, iron...

Lignocellulosic biomass is a complex natural polymer primarily composed of cellulose, hemicellulose, lignin, and various other chemical components. The cellulose in the lignocellulosic biomass can depolymerize into a nano-dimension biomaterial called nanocellulose, which possesses unique features...

Natural gravel used as aggregates in the construction had a severe impact on the environment leading to scarcity in recent times. Furthermore, the resistance of such natural aggregates to crack at higher temperature zones was less. This paper investigates the above concerns on scarcity and meagre...

More than seventy percent of mineral gets wasted during mining and polishing processing, and all this dumped waste threatens the aquifer. Utilizing this waste in construction works helps to reduce the environmental effects. This research aims to protect the environment by implementing mineral waste...

Landfill facilities and organic waste treatment plants typically are known sources of odour pollution, such as gaseous NH3, among others. In this work, the removal of gaseous NH3 released from a composting line of a mechanical and biological treatment plant of undifferentiated municipal solid waste...

Concrete, being the construction material that is extensively employed, possesses various limitations despite its adaptability in building projects. It exhibits weakness when subjected to tension, has restricted ductility, and offers minimal resistance against cracking. Concrete is widely used in...

In the context of China's critical economic transition towards sustainability, this research employs a tripartite evolutionary game model involving government, enterprises, and environmental protection social organizations to investigate the evolutionary trajectory of enterprises' green production...

Leveraging the implementation of China's environmental protection tax (EPT) policy in 2018 as a focal point, this study employs a quasi-natural experiment via the double-difference method to investigate the EPT's impact on the financial performance (FP) of publicly listed companies in heavily...

Since concrete is a fundamental component of all types of construction, many researchers are concentrating on developing High Performance Concrete (HPC) using efficient manufacturing processes. Nano silica is a quartz and silica dust this can be replaced instead of cement to achieve great strength...

Bricks have been extensively adopted for centuries and continue to play a vital role in the construction industry. Nevertheless of its dependable workability and accessibility, fired clay brick production has been recognized for its comparatively high energy and resource requirements. Traditional...

In recent past, attentions are towards preserving and restoring the resources of environment in terms of development of new products of environmental safety, Therefore utilization of vegetable fibres, extracts from stem, leaves, fruits and roots for the production of biopolymers / improving...

National parks are a destination for nature-based tourism (NBT) in both the developed and developing countries. National Park visitors with pro-environmental attitudes may be more likely to support the management's conservation efforts. However, managing and funding national parks and protected...

This study delves into exploring and assessing ESG (Economic, Social, and Governance) performance in construction companies, utilizing China State Construction Group Corporation as a prominent example. The research aims to provide insights into sustainable practices within the construction industry...

The active components of Jordanian Peganum harmala L. (P. harmala) were investigated using both GC-MS and DFT calculations. The study focused on the methanol extract of P. harmala leaves, which was found to contain 21 significant natural components, of which 9 compounds constituted more than 2% of...

In this study, an attempt was made to characterize ferrochrome slag as cement-bound layers of flexible pavement in view of its leaching behavior. Toxicity Characteristic Leaching Procedure (TCLP) test was conducted to assess the mobility of toxic elements in ferrochrome slag. Ferrochrome slag...

Dumping of construction wastes has become one of the serious concerns in the construction industries subsequent to the scarcity of construction materials, specifically aggregates. Extensive research works have been performed to utilize the dumped waste as aggregates, yet its substandard properties...

Industrial by-products such as cementitious materials or aggregates have the potential to mitigate the adverse environmental effects associated with traditional cement manufacture. Geopolymer Concrete (GPC) is more eco-friendly than conventional concrete because it does not require cement. GPC with...

The sequential nitration and magnetization of waste styrofoam to form a novel adsorbent has been investigated. The novelty of this study assigned approach lies in the introduction of an anionic surface on the styrofoam, enabling it to adsorb cationic Pb2+ ion, combined with its magnetic property...

Biodiesel can be derived from the oils of fruit seeds for powering diesel engines, and this study focuses on extracting biodiesel from Manilkara Zapota seeds, which are readily available and not intended for human consumption. The primary aim is to underscore the use of non-edible oils as a cost...

This study's two primary goals are to synthesize bioethanol from biowaste and examine its thermal characteristics. Bioethanol must first undergo a comprehensive assessment of its thermal characteristics in order to be approved for usage in spark-ignition engines. A multi-step procedure comprising...

Composites gain utility when filler materials are incorporated. The qualities of the material are changed when filler components are added. In recent years, the use of bio-based components in polymers and polymer composites has significantly increased. Agricultural wastes are employed in this case...

Nowadays cement industry power plant bed wastes can be used to create aerated concrete blocks for widespread usage in the construction sector instead of sand. The optimum materials for building enclosures for a variety of uses include aerated concretes. To enhance the physical and mechanical...

The purpose of this study is to investigate the impact that using marble sludge powder as a partial replacement for cement in concrete can have. Experiments were conducted to investigate a variety of characteristics of fiber-reinforced concrete using both fresh concrete and concrete that had been...

Bio-composite materials are gaining traction in various industries as sustainable alternatives to synthetic fiber-reinforced composites. This study investigated the impact of fine powders loading on the tensile, transverse, and compressive characteristics of hybrid composites composed of Iroko...

It is important to rapidly amend the hostile rural soil fertility and quality to develop green land verdure. In this research, cornstalk-derived biochar was added (sequence proportions 0, 1, 5, 10, 20, and 50 % in the mass ratio) into hostile rural soil and then the grass was grown in the pots. The...

The infrastructure of the country heavily depends on the construction material concrete. The primary ingredient in conventional concrete is cement, fly ash, or another cementitious substance. The need to explore alternative sources is driven by the challenges posed by global environmental warming...

Concrete is the broadly adopted composite material in the construction arena. The growing need for cost-effective housing is resulting in the depletion of environmental resources such as river sand and gravel, which are essential components in the manufacture of concrete. However, the manufacturing...