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This work provides an approach to producing nitrogen-doped (N-doped) carbon materials as gas filters for the removal of SO2 emitted by forestry and mining industries. The figure also shows the feedstock based on reconstituted wood panels that were converted into porous carbon materials through thermochemical conversion processes (fast pyrolysis and activation).

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  • Open AccessOpen Access

    REVIEW

    Malachite Green Adsorption Using Carbon-Based and Non-Conventional Adsorbent Made from Biowaste and Biomass: A Review

    Annisa Ardiyanti, Suprapto Suprapto, Yatim Lailun Ni’mah*
    Journal of Renewable Materials, Vol.11, No.11, pp. 3789-3806, 2023, DOI:10.32604/jrm.2023.031354
    (This article belongs to the Special Issue: Eco-Friendly Waste-Base Materials for Pollution Control Sustainable Technologies)
    Abstract Dyes are pervasive contaminants in wastewater, posing significant health risks to both humans and animals. Among the various methods employed for effective dye removal, adsorption has emerged as a highly promising approach due to its notable advantages, including high efficiency, cost-effectiveness, low energy consumption, and operational simplicity compared to alternative treatments. This comprehensive review focuses on investigating adsorbents derived from biowastes and biomass, specifically carbon-based and non-conventional adsorbents, for the removal of malachite green, a widely used dye known for its toxic and carcinogenic properties. Carbon-based adsorbents encompass two main types: activated carbon and biochar, More >

    Graphic Abstract

    Malachite Green Adsorption Using Carbon-Based and Non-Conventional Adsorbent Made from Biowaste and Biomass: A Review

  • Open AccessOpen Access

    ARTICLE

    Naturally Nitrogen-Doped Biochar Made from End-of-Life Wood Panels for SO2 Gas Depollution

    Hamdi Hachicha1,2, Mamadou Dia2, Hassine Bouafif2, Ahmed Koubaa1, Mohamed Khlif3, Flavia Lega Braghiroli1,*
    Journal of Renewable Materials, Vol.11, No.11, pp. 3807-3829, 2023, DOI:10.32604/jrm.2023.029454
    (This article belongs to the Special Issue: Renewable Nanostructured Porous Materials: Synthesis, Processing, and Applications)
    Abstract Reconstituted wood panels have several advantages in terms of ease of manufacturing, but their shorter life span results in a huge amount of reconstituted wood panels being discarded in sorting centers yearly. Currently, the most common approach for dealing with this waste is incineration. In this study, reconstituted wood panels were converted into activated biochar through a two-step thermochemical process: (i) biochar production using pilot scale fast pyrolysis at 250 kg/h and 450°C; and (ii) a physical activation at three temperatures (750°C, 850°C and 950°C) using an in-house activation furnace (1 kg/h). Results showed that… More >

    Graphic Abstract

    Naturally Nitrogen-Doped Biochar Made from End-of-Life Wood Panels for SO<sub>2</sub> Gas Depollution

  • Open AccessOpen Access

    REVIEW

    Advances in Research of Molded Pulp for Food Packaging

    Yifan Liu1, Shufeng Ma2, Feijie Wang1, Liqiang Wang1,*
    Journal of Renewable Materials, Vol.11, No.11, pp. 3831-3846, 2023, DOI:10.32604/jrm.2023.028251
    (This article belongs to the Special Issue: Food Packaging Materials Based on Renewable Resources)
    Abstract The molded pulp, a product of three-dimensional papermaking technology, is environmentally friendly and has a low environmental impact due to its ability to decompose quickly in the natural environment after disposal. The application of molded pulp for food packaging can replace or reduce the use of plastic food packaging. Researchers extract fibers from plants for the production of safe and hygienic molded pulp for food packaging, and they also study and enhance the qualities of molded pulp to broaden its use in the food industry. This paper reviews the sources and varieties of plant fiber More >

    Graphic Abstract

    Advances in Research of Molded Pulp for Food Packaging

  • Open AccessOpen Access

    ARTICLE

    Acidic Magnetic Biocarbon-Enabled Upgrading of Biomass-Based Hexanedione into Pyrroles

    Zhimei Li1, Kuan Tian2, Keping Wang2, Zhengyi Li2, Haoli Qin1,*, Hu Li2,*
    Journal of Renewable Materials, Vol.11, No.11, pp. 3847-3865, 2023, DOI:10.32604/jrm.2023.030122
    (This article belongs to the Special Issue: Biochar Based Materials for a Green Future)
    Abstract Sustainable acquisition of bioactive compounds from biomass-based platform molecules is a green alternative for existing CO2-emitting fossil-fuel technologies. Herein, a core–shell magnetic biocarbon catalyst functionalized with sulfonic acid (Fe3O4@SiO2@chitosan-SO3H, MBC-SO3H) was prepared to be efficient for the synthesis of various N-substituted pyrroles (up to 99% yield) from bio-based hexanedione and amines under mild conditions. The abundance of Brønsted acid sites in the MBC-SO3H ensured smooth condensation of 2,5-hexanedione with a variety of amines to produce N-substituted pyrroles. The reaction was illustrated to follow the conventional PallKnorr coupling pathway, which includes three cascade reaction steps: amination, loop closure… More >

    Graphic Abstract

    Acidic Magnetic Biocarbon-Enabled Upgrading of Biomass-Based Hexanedione into Pyrroles

  • Open AccessOpen Access

    ARTICLE

    A Melamine–Dialdehyde Starch Wood Particleboard Surface Finish without Formaldehyde

    Bengang Zhang1,*, Antonio Pizzi2,*, Mathieu Petrissans1, Anelie Petrissans1, Baptiste Colin1
    Journal of Renewable Materials, Vol.11, No.11, pp. 3867-3889, 2023, DOI:10.32604/jrm.2023.028888
    Abstract Melamine-dialdehyde starch resins used for wood surface finishes have been developed. The reaction of melamine with dialdehyde starch has been shown to occur by FTIR and MALDI ToF spectrometry, with several oligomer species due to the reaction of the two materials being identified, and the resin thermal stability was studied by thermogravimetric analysis. The resins were prepared by two different procedures when it was realized that dialdehyde starch is sensitive to too high a temperature for prolonged times. The melamine-dialdehyde starch resins were applied on particleboard supports as a direct liquid surface finish and a More >

  • Open AccessOpen Access

    ARTICLE

    In-Situ Growing of Branched CNFs on Reusable RCFs to Construct Hierarchical Cross-Linked Composite for Enhanced Microwave Absorption

    Lei Liu*, Shenao Pang, Zhuhui Luo
    Journal of Renewable Materials, Vol.11, No.11, pp. 3891-3906, 2023, DOI:10.32604/jrm.2023.028192
    (This article belongs to the Special Issue: Renewable Biomass-based Magnetic Composites for Eliminating the Contamination of Microwave Radiation)
    Abstract The recycling of carbon fibers and protection from unwanted microwave radiation are two important environmental issues that need to be addressed in modern society. Herein, branched carbon nanofibers (CNFs) were grown in-situ on recycled carbon fibers (RCFs) through the chemical vapor deposition method using nickel as catalysts and thiophene as aided-catalysts. The effect of thiophene on the growth morphology of CNFs was investigated. Correspondingly, branched CNFs-RCFs and straight CNFs-RCFs were respectively obtained in the presence and absence of thiophene. The microstructure and electromagnetic behaviour investigations have shown that the branched CNFs possess a typical multi-branched structure, More >

    Graphic Abstract

    <i>In-Situ</i> Growing of Branched CNFs on Reusable RCFs to Construct Hierarchical Cross-Linked Composite for Enhanced Microwave Absorption

  • Open AccessOpen Access

    ARTICLE

    A New Exploration of Artificially Induced Spalted Wood of Two Fungi: Hypoxylon and Sistotrema

    Yan Yan, Junpeng Dong, Haibo Hu, Susu Yang, Lin Liu, Lei Qin*
    Journal of Renewable Materials, Vol.11, No.11, pp. 3907-3916, 2023, DOI:10.32604/jrm.2023.028099
    Abstract One strain of Hypoxylon sp. CXM-3 and one strain of Sistotrema brinkmannii CXM-4 were inoculated onto sterilized cherry, poplar, birch, and basswood sheets in a certain shape and incubated at constant temperature and humidity for 4, 8, 12, and 16 weeks, respectively, to analyze whether the grain pattern formed by the zone lines was consistent with the predetermined pattern. The results showed that the zone lines of CXM-3 of Hypoxylon were free, delicate, and soft, with brown lines and black staining, mostly accompanied by black and brown dots, facets, and clusters, while the zone lines of CXM-4 of… More >

    Graphic Abstract

    A New Exploration of Artificially Induced Spalted Wood of Two Fungi: <i>Hypoxylon</i> and <i>Sistotrema</i>

  • Open AccessOpen Access

    ARTICLE

    Research and Application of Log Defect Detection and Visualization System Based on Dry Coupling Ultrasonic Method

    Yongning Yuan1, Dong Zhang2, Usama Sayed3, Hao Zhu1, Jun Wang4, Xiaojun Yang2, Zheng Wang2,*
    Journal of Renewable Materials, Vol.11, No.11, pp. 3917-3932, 2023, DOI:10.32604/jrm.2023.028764
    (This article belongs to the Special Issue: Bio-Composite Materials and Structures-2023)
    Abstract In order to optimize the wood internal quality detection and evaluation system and improve the comprehensive utilization rate of wood, this paper invented a set of log internal defect detection and visualization system by using the ultrasonic dry coupling agent method. The detection and visualization analysis of internal log defects were realized through log specimen test. The main conclusions show that the accuracy, reliability and practicability of the system for detecting the internal defects of log specimens have been effectively verified. The system can make the edge of the detected image smooth by interpolation algorithm, More >

  • Open AccessOpen Access

    ARTICLE

    Insecticidal Activity and Physicochemical Characterization of Nanoparticles from Foliar Extract of Capsicum chinense

    Arnoldo E. Alfaro-Corres1, Daniel González-Mendoza2, Esaú Ruiz-Sánchez1,*, Carlos Ail-Catzin2, Benjamín Valdez-Salas3, Federico Gutiérrez-Miceli4, Arturo Reyes-Ramírez1, Jacques Fils Pierre1
    Journal of Renewable Materials, Vol.11, No.11, pp. 3933-3943, 2023, DOI:10.32604/jrm.2023.031129
    Abstract This work was carried out to evaluate the insecticidal effect of mono, bi and trimetallic nanoparticles (NPs) from leaf extract of habanero pepper (Capsicum chinense Jacq.) on the red flour beetle (Tribolium castaneum herbst.) and cotton mealybug (Phenacoccus solenopsis Tinsley). The results showed that Cu NPs, Cu/Mn NPs and Zn/Cu NPs had high insecticidal effect against T. castaneum (63%–80% mortality after 96 h). The Cu NPs and Zn/Cu NPs showed also insecticidal effect against P. solenopsis, but to a lesser extent (20%–28% after 96 h). With regards to the physicochemical characterization, Cu NPs had a zeta potential of 21.1 More >

    Graphic Abstract

    Insecticidal Activity and Physicochemical Characterization of Nanoparticles from Foliar Extract of <i>Capsicum chinense</i>

  • Open AccessOpen Access

    ARTICLE

    Influence of Bayer Red Mud on the Operational and Mechanical Characteristics of Composite Cement Mortar

    Cheng Hu1,2, Weiheng Xiang1,3,*, Ping Chen2,3, Yi Yang4,5, Libo Zhou3, Jiufang Jiang5, Shunkai Li2,4, Yang Ming1, Qing Li3
    Journal of Renewable Materials, Vol.11, No.11, pp. 3945-3956, 2023, DOI:10.32604/jrm.2023.027544
    Abstract The aim of this study is to enhance the value and utilization of red mud generated in the Bayer process by preparing composite cement mortars. The effects of two different types of Bayer red mud with varying physical and chemical characteristics on the fluidity, mechanical strength, mineral composition, and microstructure of the composite cement mortar were systematically evaluated. The results showed that the optimal addition of red mud A was 10 wt%, while it was 20 wt% for red mud B. The mechanical properties of the composite cement mortar met the standards for P·O42.5 cement. More >

  • Open AccessOpen Access

    ARTICLE

    Experimental Investigation on Compressive Properties of Fiber Recycled Aggregate Concrete

    Guiwu Lin, Kaige Liu, Yuliang Chen*, Yunpeng Ji, Rui Jiang
    Journal of Renewable Materials, Vol.11, No.11, pp. 3957-3975, 2023, DOI:10.32604/jrm.2023.028290
    (This article belongs to the Special Issue: Environmentally Friendly and Renewable Civil Engineer Materials)
    Abstract This paper presents an experimental study to explore the compressive properties of fiber recycled aggregate concrete. A total of 75 specimens with the replacement rate of recycled coarse aggregate and fiber type were conducted under a uniaxial compressive test. The failure modes, stress-strain whole curves, peak stress, peak strain, and energy dissipation capacity were systematically observed and revealed. Test results indicate that steel fiber has the best modification effect on energy dissipation capacity and the toughness index of recycled concrete, corresponding to the enhancement of 81.75% and 22.90% on average. The addition of polyvinyl alcohol… More >

    Graphic Abstract

    Experimental Investigation on Compressive Properties of Fiber Recycled Aggregate Concrete

  • Open AccessOpen Access

    ARTICLE

    Preparation of High Activity Admixture from Steel Slag, Phosphate Slag and Limestone Powder

    Ying Ji*, Xi Liu*
    Journal of Renewable Materials, Vol.11, No.11, pp. 3977-3989, 2023, DOI:10.32604/jrm.2023.028439
    Abstract The problem of low disposal and utilization rate of bulk industrial solid waste needs to be solved. In this paper, a high-activity admixture composed of steel slag-phosphate slag-limestone powder was proposed for most of the solid waste with low activity and a negative impact on concrete workability, combining the characteristics of each solid waste. The paper demonstrates the feasibility and explains the principle of the composite system in terms of water requirement of standard consistency, setting time, workability, and mechanical properties, combined with the composition of the phases, hydration temperature, and microscopic morphology. The results… More >

    Graphic Abstract

    Preparation of High Activity Admixture from Steel Slag, Phosphate Slag and Limestone Powder

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