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Waste - DOAJ

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Last Updated: 27 September 2022

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Potentials of palm kernel shell derivatives: a critical review on waste recovery for environmental sustainability

Palm Kernel Shell shells are made in large amounts each year as wastes, due to the surge in demand for palm oil. This report is therefore aimed at presenting the state of the art on the numerous uses of PKS as a valuable precursor to solving the associated disposal and environmental problems. PKS has great potential as a bioabsorbent, abrasive, detoxifier, antibacteria, antifungi, and antioxidant powder, as well as a biofuel for syngas and biodiesel production, as shown by most research results. PKS also supplies polymer and metallic composites and aggregates in construction and ceramics, as well as other industrial applications. With a call for further exploration, PKS' suitability for other engineering uses was also highlighted.

Source link: https://doi.org/10.1016/j.clema.2022.100154


Qualitative analysis of post-consumer and post-industrial waste via near-infrared, visual and induction identification with experimental sensor-based sorting setup

Sensor-based sorting in waste management is a way to isolate valuable material or contaminants from a waste stream. The procedures described in this paper describe the design of sorting models for a particular near-infrared, color with optical spectroscopy or color line scan cameras, or electromagnetic conductivity with electromagnetic sensors. These sensors are included in the MontanUniversitaet Leoben's experimental sensor-based sorting scheme. This sorting rack is a special purpose-built machine for the University that can be used to perform experiments on sensor-based sorting in laboratory scale. u2022 Near-infrared spectroscopy measures the molecular composition of near-infrared-active particles. u2022 Visual spectroscopy records visible light absorption by chemical compounds at a distance of 2022. u2022 Induction sensors use induced currents to detect nearby metal objects.

Source link: https://doi.org/10.1016/j.mex.2022.101686


Approach to assess the performance of waste management systems towards a circular economy: waste management system development stage concept (WMS-DSC)

In this paper, a novel holistic approach to analyze the effectiveness of waste management tools is presented. Practitioners or policy makers can use the WMS development stage model to analyze mainly the municipal level. Stage 1 u2013 absence or a shortage of key components of waste management; stage 2 u2013 safe collection and sorting; and stage 5 u2013 circular economy, waste as a resource. This model can be used to identify goals and the most appropriate steps for an individual WMS toward a future best practice of CE by equating the highest stage to the goals that have arisen globally for a sustainable CE. paraphrasedoutput:u2022 The United States presents a holistic way to evaluate waste management services,u2019 results are given.

Source link: https://doi.org/10.1016/j.mex.2022.101634


A method for the process of collagen modified polyester from fish scales waste

As a result, the finished collagen modified polyester fiber maintains the original polyethylene terephthalate fibers' such as durability, tenacity, and resistance to wrinkle and shrink. However, the supramolecular collagen modified polyester containing animal collagen peptides has a soft touch and champagne-like color, as shown by the above.

Source link: https://doi.org/10.1016/j.mex.2022.101636


Characterization of hydrocarbon utilizing bacteria in waste engine oil-impacted sites

At three auto-mechanical workshops in Uyo, N. . . . ia, changes in soil physicochemical properties and bacterial species present in soil contaminated with waste engine oil were tested. With rises in soil physicochemical properties and heterotrophic bacterial population numbers, waste engine oil pollution affected soils greatly. During the 15 days of incubation, the degree of bacterial growth observed was related to organisms' ability to biodegrade hydrocarbons present in the medium bacterium species, which revealed varying hydrocarbon utilization. The most effective in cultures of Corynebacterium kutscheri was growth in hydrocarbon medium.

Source link: https://doi.org/10.36462/H.BioSci.20218


Sustainable consumption and the well-being dividend: Insights from the zero-waste movement in Chinese cities

Achieving deep cuts in the carbon footprints of everyday life is an important component of climate policies globally, not least in the wealthy countries. Can sustainable consumptionu201d and particularly reduced consumptionu2014enhance human well-being as suggested by theories of the u201d well-being dividendu201d's theories, as well as contributing to environmental improvements? This paper explores the well-being dividend among Chinese cities' communities of u201czero waste. u201d I explore how sustainable consumption could satisfy multiple human needs and improve individual and collective wellbeing by using 45 in-depth interviews and virtual ethnography of zero-waste practitioners. This research reveals the value of lifestyle communities in processes of needs fulfillment, as well as how contemporary societies could foster sustainable lifestyles by giving special guarantees to synergic need satisfiers'u2014, allowing green communities to flourish and thrive.

Source link: https://doi.org/10.1080/15487733.2022.2111925


EFFECTS OF WASTE STEEL FIBRES ON THE MECHANICAL PROPERTIES OF MODIFIED SELF COMPACTING CONCRETE

Waste Steel Fibre and Rice Husk Ash were used in the manufacture of Self Compacting Concrete. With the maximum CS of 37. 04 - 43. 64 N/mm2 and the maximum CS of 36. 06 % WSF increase, the maximum CS of the hardened control samples after 56 days of curing was 36. 18 N/mm2, with 15 percent of RHA and 0. 4 %-0. 5 % WSF increase. In the same way, the STS of SCC at 56 days was also improved with an increase in WSF content up to 0. 4 percent and reduced with the addition of more WSF.

Source link: https://doi.org/10.29081/jesr.v28i2.001


A COMPARATIVE STUDY ON THE EFFECT OF SISAL FIBRE AND WASTE PLASTIC STRIPS IN STRUCTURAL STRENGTH IMPROVEMENT OF TROPICAL BLACK CLAY

The liquid limit of BCS initially fluctuated between 43. 4% and 54. 9 percent at 1% sisal fibre content, then dropped to 49. 4% at 2% sisal fibre content, according to the study. Fluid values increased from 43. 4% for the natural soil to a record of 58% at 1% waste plastic strips, but then fell to 49. 1 percent at 2% waste plastic strips content, with the exception of 58% at 58%. When treated with sisal fibre and waste plastic strips respectively at 0. 5 percent admixtures content, the plastic limit for both BCS-sisal fibre/waste plastic strips first decreased from 25. 78 to 15. 55 and 14. 7 percent. BCS/waste plastic strips improved the soil more than BCS/sisal fibre treated soil, and it was recommended at optimal 2% waste plastic strips for geotechnical engineering applications such as road payment, based on the results.

Source link: https://doi.org/10.29081/jesr.v28i2.009


Processing on Curcuma longa waste oil-diesel blends for using as better alternative to diesel fuel

With the prepared fuel samples, improved evaporation, atomization, improved air-fuel mixing, significant decrease in ignition delay, and ideal flame sustainability characteristics have been added, such as cerium oxide and Nano Egg Shell Powder have been added, in order to achieve improved evaporation, atomization, improved air-fuel mixing, improved air-fuel mixing, significant reduction in ignition delay, and best flame sustainability characteristics. For the tested blends, the tested waste oil samples have been tested under four different loading conditions, including 30, 60, 90, and 120 N. The prepared waste oil samples have been tested under conditions including Brake Thermal Efficiency, Brake Specific Fuel Consumption, Exhaust Gas Temperature, % of carbon monoxide emission, % of nitrogen oxide emission, % of hydrogen emission, and % NOX emissions. Grey Relational Analysis has also been used as a multi-object optimization tool in order to determine the right mixture of the Curcuma longa waste oil u2013 diesel blend in order to obtain improved desirable characteristics.

Source link: https://doi.org/10.2516/stet/2022016


Investigation of the Effect of Yarn Waste Fibers and Cocamide Diethanolamide Chemical on the Strength of Hot Mix Asphalt

Traditional bitumen test were performed on bituminous binder modified with Cocamide Diethanolamide chemical in different ratios in this research. However, it was found that indirect tensile strength and resistance to moisture of samples prepared with bituminous binder modified with 5% Cocamide Diethanolamide has been adversely affected. Firstly, the effect of 0. 9 percent, 0. 2 percent, and 0. 3% yarn waste fibers on samples of reference bituminous binder-prepared samples was investigated. According to the resulting results, various proportions of yarn waste fibers added to the aggregate mixture had no effect on moisture sensitivity, according to the authors' reports.

Source link: https://doi.org/10.3221/IGF-ESIS.62.04

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions