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A new method of pretreatment of corn straw with Phanerochaete chrysosporium combined with catalytic pyrolysis was proposed to improve the quality of bio-oil. Due to the decomposition of microorganism and shape selection deoxidation of ZSM-5 catalyst, the pyrolysis reaction is optimized. The total hydrocarbon and aromatics contents can significantly increase up to 34.37% and 30.59%, respectively.

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  • Open AccessOpen Access

    ARTICLE

    Enhancing Hydrocarbon-Rich Bio-Oil Production via Catalytic Pyrolysis Fortified with Microorganism Pretreatment

    Jiapeng Wang1, Bo Zhang1,*, Haoqiang Cheng1, Zhixiang Xu2
    Journal of Renewable Materials, Vol.11, No.10, pp. 3595-3612, 2023, DOI:10.32604/jrm.2023.030005
    (This article belongs to the Special Issue: New Trends in Bio-oil Production, Conversion and Utilization )
    Abstract A new method of pretreatment of corn straw with Phanerochaete chrysosporium combined with pyrolysis was proposed to improve the quality of bio-oil. The characterization results demonstrated that microbial pretreatment was an effective method to decrease the lignin, which can achieve a maximum removal rate of 44.19%. Due to the destruction of biomass structure, the content of alkali metal and alkaline earth metal is reduced. Meanwhile, the depolymerized biomass structure created better pyrolysis conditions to promote the pyrolysis efficiency, increase the average decomposition rate of pyrolysis and reduce the residue. In fast pyrolysis, because of the enrichment… More >

    Graphic Abstract

    Enhancing Hydrocarbon-Rich Bio-Oil Production via Catalytic Pyrolysis Fortified with Microorganism Pretreatment

  • Open AccessOpen Access

    ARTICLE

    Optical and Mechanical Properties of Ramie Fiber/Epoxy Resin Transparent Composites

    Chunhua Liu1, Dongfang Zou1, Qinqin Huang1, Shang Li2, Xia Zheng1, Xingong Li1,*
    Journal of Renewable Materials, Vol.11, No.10, pp. 3613-3624, 2023, DOI:10.32604/jrm.2023.028111
    (This article belongs to the Special Issue: Natural Fibre Composites: Design, Materials Selection and Fabrication)
    Abstract The residual resources of ramie fiber-based textile products were used as raw materials. Ramie fiber felt (RF) was modified by NaClO2 aqueous solution and then impregnated with water-based epoxy resin (WER). RF/WER transparent composite materials were prepared by lamination hot pressing process. The composite materials’color difference, transmittance, haze, density, water absorption, and mechanical properties were determined to assess the effects of NaClO2 treatment and the number of ramie fiber layers on the properties of the prepared composites. The results showed significantly improved optical and mechanical properties of the RF/WER transparent composites after NaClO2 treatment. With the increase More >

    Graphic Abstract

    Optical and Mechanical Properties of Ramie Fiber/Epoxy Resin Transparent Composites

  • Open AccessOpen Access

    ARTICLE

    Flexible Biofoams Based on Furanics and Fatty Acids Esterified Tannin

    Elham Azadeh1, Ummi Hani Abdullah2,3, Christine Gerardin1,*, Antonio Pizzi1,*, Philippe Gerardin1, Cesar Segovia4
    Journal of Renewable Materials, Vol.11, No.10, pp. 3625-3645, 2023, DOI:10.32604/jrm.2023.030373
    Abstract Water repellant, flexible biofoams using tannin esterified with various fatty acid chains, namely lauric, palmitic and oleic acids, by reaction with lauryl chloride, palmitoyl chloride, and oleyl chloride were developed and their characteristics compared with the equivalently esterified rigid biofoams. Glycerol, while initially added to control the reaction temperature, was used as a plasticizer yielding flexible biofoams presenting the same water repellant character that the equivalent rigid foams. Acetaldehyde was used as the cross-linking agent instead of formaldehyde, as it showed a better performance with the esterified tannin. The compression results showed a significant decrease… More >

  • Open AccessOpen Access

    ARTICLE

    Effects of Biowaste-Derived Hydrochar on Anaerobic Digestion: Insights into Hydrochar Characteristics

    Hongqiong Zhang1,2,#, Xu Wang3,#, Zhaojing Qian4, Buchun Si1,4,*, Kai Jin5, Tengfei Wang5
    Journal of Renewable Materials, Vol.11, No.10, pp. 3647-3657, 2023, DOI:10.32604/jrm.2023.028438
    (This article belongs to the Special Issue: Biochar Based Materials for a Green Future)
    Abstract Hydrochar prepared with four typical biowastes, pine wood, food waste, digested sewage sludge, and Chlorella were applied for the promotion of anaerobic digestion. The gas production and substrate composition were analyzed associated with the hydrochar characteristics. The results suggested that Chlorella hydrochar (C-C) showed the highest cumulative yield of methane (approximately 345 mL) with high total organic carbon (TOC) removal efficiency and low volatile fatty acids (VAFs) concentration. Especially, food waste hydrochar (F-C) showed a poor effect on anaerobic digestion and aroused 1.4–1.6 g/L accumulation of VAFs, in which the toxic components may account for More >

  • Open AccessOpen Access

    ARTICLE

    Spatio-Temporal Characteristics of Heat Transfer of Methanation in Fluidized Bed for Pyrolysis and Gasification Syngas of Organic Solid Waste

    Danyang Shao1, Xiaojia Wang1,*, Delu Chen1, Fengxia An1,2
    Journal of Renewable Materials, Vol.11, No.10, pp. 3659-3680, 2023, DOI:10.32604/jrm.2023.029220
    Abstract Methanation is an effective way to efficiently utilize product gas generated from the pyrolysis and gasification of organic solid wastes. To deeply study the heat transfer and mass transfer mechanisms in the reactor, a successful three-dimensional comprehensive model has been established. Multiphase flow behavior and heat transfer mechanisms were investigated under reference working conditions. Temperature is determined by the heat release of the reaction and the heat transfer of the gas-solid flow. The maximum temperature can reach 951 K where the catalyst gathers. In the simulation, changes in the gas inlet velocity and catalyst flow… More >

  • Open AccessOpen Access

    ARTICLE

    Experimental Study on the Compressive Strength of Concrete with Different Wheat Straw Treatment Techniques

    Liang Wen1,2,*, Changhong Yan3, Yehui Shi4, Zhenxiang Wang4, Gang Liu4, Wei Shi4
    Journal of Renewable Materials, Vol.11, No.10, pp. 3681-3692, 2023, DOI:10.32604/jrm.2023.027671
    Abstract The treatment of wheat straw is very difficult, and its utilization rate is very low; accumulation causes air pollution and even fire. To make full use of wheat straw resources, we examined how using different physical and chemical methods to treat the wheat straw which can improve its strength abilities, or enhance the activity of wheat straw ash. In terms of concrete additives, it can reduce the amount of cement used. In this paper, we found that alkali treatment can significantly improve the tensile strength of wheat straw fiber, but polyvinyl alcohol treatment has no… More >

    Graphic Abstract

    Experimental Study on the Compressive Strength of Concrete with Different Wheat Straw Treatment Techniques

  • Open AccessOpen Access

    ARTICLE

    Development of Gelatin-Based Active Packaging and Its Application in Bread Preservation

    Hui Zheng1,2, Xiaohan Chen2, Li Li2, Dawei Qi1, Jiale Wang1, Jiaying Lou1,*, Wenjun Wang1,*
    Journal of Renewable Materials, Vol.11, No.10, pp. 3693-3709, 2023, DOI:10.32604/jrm.2023.027748
    (This article belongs to the Special Issue: Active and Intelligent Food Packaging Films)
    Abstract The issue of plastic pollution has attracted widespread social attention. Gelatin is valued as a degradable bio-based material, especially as an edible active packaging material. However, the commonly used solution-casting filmforming technology limits the mass production of gelatin films. In order to improve the production efficiency and enhance the commercial value of gelatin films, in this study, fish gelatin (FG) particles were successfully blended with essential oils (EOs) to prepare active films by melt extrusion technique, a common method for commercial plastics, and applied to bread preservation. FG and EOs showed good compatibility with each… More >

    Graphic Abstract

    Development of Gelatin-Based Active Packaging and Its Application in Bread Preservation

  • Open AccessOpen Access

    ARTICLE

    Preliminary Study on the Treatment Efficiency of Pasteurized Lime Thermal Alkaline Hydrolysis for Excess Activated Sludge and Reduction of Tetracycline Resistance Genes

    Maoxia Chen1,2,*, Qixuan Zhou1, Jiayue Zhang1, Jiaoyang Li1, Wei Zhang1, Huan Liu1
    Journal of Renewable Materials, Vol.11, No.10, pp. 3711-3723, 2023, DOI:10.32604/jrm.2023.027826
    Abstract Thermal alkaline hydrolysis is a common pretreatment method for the utilization of excess activated sludge (EAS). Owing to strict environment laws and need for better energy utilization, new methods were developed in this study to improve the efficiency of pretreatment method. Direct thermal hydrolysis (TH), pasteurized thermal hydrolysis (PTH), and alkaline pasteurized thermal hydrolysis (PTH + CaO and PTH + NaOH) methods were used to treat EAS. Each method was compared and analyzed in terms of dissolution in ammonium nitrogen (NH4 + -N) and soluble COD (SCOD) in EAS. Furthermore, the removal of tetracycline resistance genes… More >

  • Open AccessOpen Access

    ARTICLE

    Nail Holding Performance of Self-Tapping Screws on Masson Pine and Chinese Fir Dimension Lumbers

    De Li1,#, Bengang Zhang1,#, Yuan Tu1, Guoming Xiao1, Meifen Tian2, Xiaoxue Xu1, Xiao Zhong1, Qiaoyan Zhang3, Zhigang Wu1,*, Jiankun Liang4,*
    Journal of Renewable Materials, Vol.11, No.10, pp. 3725-3738, 2023, DOI:10.32604/jrm.2023.027895
    Abstract Screw connection is a type most commonly applied to timber structures. As important commercial tree species in China, Masson pine and Chinese fir have the potential to prepare wood structures. In this study, the effects of the diameter of the self-tapping screw and the guiding bores on the nail holding performance on different sections of Masson pine and Chinese fir dimension lumbers were mainly explored. The results showed that: (1) The nail holding strength of the tangential section was the maximum, followed by that of the radial section, and that of the cross section was… More >

  • Open AccessOpen Access

    ARTICLE

    Synthesis of Carbon dots from Biomass Chenpi for the Detection of Hg2+

    Jun Xiang1,2,*, Xiaoqing Chen1, Qi Liu1, Huihua Jing2, Tongqiang Chen2, Wanli Tang2, Wenyang Xu2
    Journal of Renewable Materials, Vol.11, No.10, pp. 3739-3750, 2023, DOI:10.32604/jrm.2023.028090
    (This article belongs to the Special Issue: Carbon-Based Nanomaterials from Renewable Materials: Synthesis, Properties and Applications)
    Abstract Biomass-derived carbon dots (C-dots) are considered a very important carbon material in metal ion detection of their small environmental impact, simple preparation process, and relatively low cost. A green approach for synthesizing biomass-derived C-dots from Chenpi using a hydrothermal method without further processing is proposed in the present study. The as-synthesized C-dots show excellent fluorescence properties, superior resistance to UV irradiation photobleaching, and high photostability in salt-containing solutions. The C-dots were used in the form of label-free fluorescent probes for sensitively detecting Hg2+ selectively. The outcome relationship behaved linearly and was established based on a given More >

    Graphic Abstract

    Synthesis of Carbon dots from Biomass Chenpi for the Detection of Hg<sup>2+</sup>

  • Open AccessOpen Access

    ARTICLE

    Optimization of Mortar Compressive Strength Prepared with Waste Glass Aggregate and Coir Fiber Addition Using Response Surface Methodology

    Cut Rahmawati1,2,*, Lia Handayani3, Muhtadin4, Muhammad Faisal4, Muhammad Zardi1, S. M. Sapuan5, Agung Efriyo Hadi6, Jawad Ahmad7, Haytham F. Isleem8
    Journal of Renewable Materials, Vol.11, No.10, pp. 3751-3767, 2023, DOI:10.32604/jrm.2023.028987
    (This article belongs to the Special Issue: Sustainable Concrete with Recyclable Materials)
    Abstract Waste Glass (WGs) and Coir Fiber (CF) are not widely utilized, even though their silica and cellulose content can be used to create construction materials. This study aimed to optimize mortar compressive strength using Response Surface Methodology (RSM). The Central Composite Design (CCD) was applied to determine the optimization of WGs and CF addition to the mortar compressive strength. Compressive strength and microstructure testing with Scanning Electron Microscope (SEM), Fourier-transform Infrared Spectroscopy (FT-IR), and X-Ray Diffraction (XRD) were conducted to specify the mechanical ability and bonding between the matrix, CF, and WGs. The results showed… More >

    Graphic Abstract

    Optimization of Mortar Compressive Strength Prepared with Waste Glass Aggregate and Coir Fiber Addition Using Response Surface Methodology

  • Open AccessOpen Access

    ARTICLE

    Physicochemical Properties of Combustion Ashes of Some Trees (Urban Pruning) Present in the Neotropical Region

    John Freddy Gelves-Díaz1,*, Ludovic Dorkis2, Richard Monroy-Sepúlveda1, Sandra Rozo-Rincón1, Yebrail Alexis Romero-Arcos1
    Journal of Renewable Materials, Vol.11, No.10, pp. 3769-3787, 2023, DOI:10.32604/jrm.2023.029270
    Abstract Secondary lignocellulosic biomass has proved to be useful as an energy source through its oxidation by means of combustion processes. In accordance with the above, in this paper, we wanted to study the ash from urban pruning residues that are generated in cities in the Neotropics. Species such as Licania tomentosa, Azadirachta indica, Ficus benjamina, Terminalia catappa, Leucaena leucocephala, Prosopis juliflora and Pithecellobium dulce were selected because they have been previously studied and showed potential for thermal energy generation. These materials were calcined in an oxidizing atmosphere and characterized by X-ray diffraction and fluorescence, scanning electron microscopy with microchemistry, BET surface area,… More >

    Graphic Abstract

    Physicochemical Properties of Combustion Ashes of Some Trees (Urban Pruning) Present in the Neotropical Region

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