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  • Open Access

    ARTICLE

    Reduction Discoloration of Reactive Dyed Cotton Waste and Chemical Recycling via Ionic Liquid

    Aline Ferreira Knihs, Larissa Klen Aragão, Miguel Angelo Granato, Andrea Cristiane Krause Bierhalz*, Rita de Cassia Siqueira Curto Valle

    Journal of Renewable Materials, Vol.12, No.9, pp. 1557-1571, 2024, DOI:10.32604/jrm.2024.052963 - 25 September 2024

    Abstract The textile industry generates large volumes of waste throughout its production process. Most of this waste is colored, therefore, discoloration is an important step toward recycling and reusing this waste. This study focused on the chemical reductive discoloration of textile waste composed of cotton dyed with reactive dye. The experimental design demonstrated the significant influence of the concentration of reducing agent and time of reaction on the degree of whiteness of the cotton fibers. The concentration of the alkaline agent was not significant in the process. The optimization of the reaction conditions lead to Berger… More > Graphic Abstract

    Reduction Discoloration of Reactive Dyed Cotton Waste and Chemical Recycling via Ionic Liquid

  • Open Access

    ARTICLE

    Enhancing the Decomposition of Paper Cups Using Galleria Mellonella and Eisenia Fetida

    Shadi Moqbel1,*, Habib Al-Ghoul2, Abd Al-Majeed Al-Ghzawi3, Rami Mukbel4

    Journal of Renewable Materials, Vol.12, No.2, pp. 349-367, 2024, DOI:10.32604/jrm.2023.046369 - 11 March 2024

    Abstract The composition of paper cups creates a challenge for the recycling industry, as the paperboard–plastic film composite is hard to separate. Therefore, paper cups are sent to landfills or waste incinerators. This study explores the combined use of red worms (Eisenia fetida) and Greater wax moth (Galleria mellonella) in the biodegradation of paper cups. The study investigates the conditions and combinations that promote using Eisenia fetida and Galleria mellonella for degrading paper cups. The study considered the influence of environmental temperature, the presence of food waste, varying the number of Eisenia fetida worms, and the… More > Graphic Abstract

    Enhancing the Decomposition of Paper Cups Using Galleria Mellonella and Eisenia Fetida

  • Open Access

    ARTICLE

    A Circular Economy Use of Post-Consumer Polypropylene Packaging for Low Thermal Conductive and Fire-Retardant Building Material Applications

    Jakkid Sanetuntikul1, Borwon Narupai2, Nawadon Petchwattana3,*

    Journal of Renewable Materials, Vol.11, No.9, pp. 3567-3582, 2023, DOI:10.32604/jrm.2023.029308 - 20 July 2023

    Abstract Wastes from polypropylene (PP) packages are accumulating every year because it is one of the most widely consumed and short lifecycle products. This paper aims to develop low thermal conductive and fire-retardant materials from post-consumer PP (pPP) packages. Ammonium polyphosphate (APP) and hollow glass microsphere (HGM) were further added to improve the fire retardancy and thermal conductivity of pPP. The influence of APP and HGM on the mechanical and thermal properties, fire retardancy and thermal conductivity of pPP were investigated and compared with that of virgin PP (vPP). HGM was constantly added at 5 wt%… More > Graphic Abstract

    A Circular Economy Use of Post-Consumer Polypropylene Packaging for Low Thermal Conductive and Fire-Retardant Building Material Applications

  • Open Access

    ARTICLE

    Development of Wet Shotcrete with Solid Waste as Aggregate: Strength Optimization and Mix Proportion Design

    Yafei Hu1,2, Keqing Li1,2, Bo Zhang1,2, Bin Han1,2,*

    Journal of Renewable Materials, Vol.11, No.9, pp. 3463-3484, 2023, DOI:10.32604/jrm.2023.027532 - 20 July 2023

    Abstract The super-fine particle size of tailings is its drawback as a recycled resource, which is reflected in the low strength of the new construction and industrial materials formed when it is mixed with cement and other cementitious materials. Therefore, it is crucial to study the effect of tailings particle size and cementitious material on the strength of tailings wet shotcrete (TWSC) and to investigate the optimal mix proportion. In this paper, a multivariate nonlinear response model was constructed by conducting central composite experiments to investigate the effect of different factors on the strength of TWSC.… More >

  • Open Access

    ARTICLE

    Study on Mechanical Properties of High Fine Silty Basalt Fiber Shotcrete Based on Orthogonal Design

    Jinxing Wang1,2,3, Yingjie Yang1,2,3, Xiaolin Yang1,2,3, Huazhe Jiao1,2,3,4,*, Qi Wang1,2,3, Liuhua Yang1,2,3, Jianxin Yu1,2,3, Fengbin Chen1,2,3

    Journal of Renewable Materials, Vol.11, No.8, pp. 3351-3370, 2023, DOI:10.32604/jrm.2023.027512 - 26 June 2023

    Abstract In order to improve the comprehensive utilization rate of high fines sand (HFS) produced by the mine, full solid waste shotcrete (HFS-BFRS) was prepared with HFS as fine aggregate in cooperation with basalt fiber (BF). The strength growth characteristics of HFS-BFRS were analyzed. And the fitting equation of compressive strength growth characteristics of HFS-BFRS under the synergistic effect of multiple factors was given. And based on the orthogonal experimental method, the effects on the compressive strength, splitting tensile strength and flexural strength of HFS-BFRS under the action of different levels of influencing factors were investigated.… More >

  • Open Access

    ARTICLE

    Influence of Recycling Waste Glass as Fine Aggregate on the Concrete Properties

    Rafal A. Hadi1,*, Suhad M. Abd2, Hadee Mohammed Najm3, Shaker Qaidi4,5,*, Moutaz Mustafa A. Eldirderi6, Khaled Mohamed Khedher7,8

    Journal of Renewable Materials, Vol.11, No.6, pp. 2925-2940, 2023, DOI:10.32604/jrm.2023.025558 - 27 April 2023

    Abstract Recent years have witnessed an increase in the quantity of waste glass (WG) across the globe. Replacing the fine aggregate with WG is one of the steps toward preserving the natural resources of the environment and creating low-cost concrete. The present study is concerned with replacing fine aggregates with glass powder (GP) at (0%, 15%, 30%, and 50%). It has studied the fresh and hardened properties (compressive strength, tensile strength, hardened density, and slump) for all the mentioned percent replacements. The findings have shown that all mixtures containing GP gave acceptable slump results within the More >

  • Open Access

    ARTICLE

    Deep Consensus Network for Recycling Waste Detection in Smart Cities

    Manar Ahmed Hamza1,*, Hanan Abdullah Mengash2, Noha Negm3, Radwa Marzouk2, Abdelwahed Motwakel1, Abu Sarwar Zamani1

    CMC-Computers, Materials & Continua, Vol.75, No.2, pp. 4191-4205, 2023, DOI:10.32604/cmc.2023.027050 - 31 March 2023

    Abstract Recently, urbanization becomes a major concern for developing as well as developed countries. Owing to the increased urbanization, one of the important challenging issues in smart cities is waste management. So, automated waste detection and classification model becomes necessary for the smart city and to accomplish better recyclable waste management. Effective recycling of waste offers the chance of reducing the quantity of waste disposed to the land fill by minimizing the requirement of collecting raw materials. This study develops a novel Deep Consensus Network with Whale Optimization Algorithm for Recycling Waste Object Detection (DCNWO-RWOD) in… More >

  • Open Access

    REVIEW

    Recycling Carbon Resources from Waste PET to Reduce Carbon Dioxide Emission: Carbonization Technology Review and Perspective

    Xing Zhou1,2,5,6,*, Qi Wang1, Sai Feng1, Jingrui Deng1, Keming Zhu1, Yun Xing1,3, Xiaolian Meng3, Xiaojun Wang4, Lu Li5,6

    Journal of Renewable Materials, Vol.11, No.5, pp. 2085-2108, 2023, DOI:10.32604/jrm.2023.025032 - 13 February 2023

    Abstract Greenhouse gas emissions from waste plastics have caused global warming all over the world, which has been a central threat to the ecological environment for humans, flora and fauna. Among waste plastics, waste polyethylene terephthalate (PET) is attractive due to its excellent stability and degradation-resistant. Therefore, merging China’s carbon peak and carbon neutrality goals would be beneficial. In this review, we summarize the current state-of-the-art of carbon emission decrease from a multi-scale perspective technologically. We suggest that the carbon peak for waste PET can be achieved by employing the closed-loop supply chain, including recycling, biomass More > Graphic Abstract

    Recycling Carbon Resources from Waste PET to Reduce Carbon Dioxide Emission: Carbonization Technology Review and Perspective

  • Open Access

    ARTICLE

    Adaptive Route Sink Relocation Using Cluster Head Chain Cycling Model in WSN

    M. Sudha1,*, P. Shanmugapriya2, Rami Q. Malik3, Ahmed Alkhayyat4

    Intelligent Automation & Soft Computing, Vol.36, No.2, pp. 1811-1826, 2023, DOI:10.32604/iasc.2023.032265 - 05 January 2023

    Abstract Wireless Sensor Networks (WSN) have revolutionized the processes involved in industrial communication. However, the most important challenge faced by WSN sensors is the presence of limited energy. Multiple research investigations have been conducted so far on how to prolong the energy in WSN. This phenomenon is a result of inability of the network to have battery powered-sensor terminal. Energy-efficient routing on packet flow is a parallel phenomenon to delay nature, whereas the primary energy gets wasted as a result of WSN holes. Energy holes are present in the vicinity of sink and it is an… More >

  • Open Access

    ARTICLE

    Study on Strength Reduction Law and Meso-Crack Evolution of Lower Layered Cemented Tailings Backfill

    Huazhe Jiao1,2,3, Wenxiang Zhang1,2,3,*, Yunfei Wang1,2,3,*, Xinming Chen1,2,3, Liuhua Yang1,2,3, Yangyang Rong1,2,3

    Journal of Renewable Materials, Vol.11, No.3, pp. 1513-1529, 2023, DOI:10.32604/jrm.2023.026008 - 31 October 2022

    Abstract The green disposal of tailings solid waste is a problem to be solved in mine production. Cemented tailings filling stoping method can realize the dual goals of solid waste resource utilization and mined-out area reduction. However, the volume of the mined-out area of the open-pit method is larger than the filling capacity, resulting in the complex stratification of the underground backfill, and the strength of the backfill cannot meet the requirements. In this paper, according to the delamination situation, the specimens of horizontal and inclination angle layered cemented tailings backfill (LCTB) is made for a… More >

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