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  • Open Access

    ARTICLE

    Silica Gel from Chemical Glass Bottle Waste as Adsorbent for Methylene Blue: Optimization Using BBD

    Suprapto Suprapto, Putri Augista Nur Azizah, Yatim Lailun Ni’mah*

    Journal of Renewable Materials, Vol.11, No.12, pp. 4007-4023, 2023, DOI:10.32604/jrm.2023.031210

    Abstract This research focuses on the effective removal of methylene blue dye using silica gel synthesized from chemical glass bottle waste as an environmentally friendly and cost-effective adsorbent. The adsorption process was optimized using Box-Behnken Design (BBD) and Response Surface Methodology (RSM) to investigate the influence of pH (6; 8 and 10), contact time (15; 30 and 45 min), adsorbent mass (30; 50 and 70 mg), and initial concentration (20; 50 and 80 mg/L) of the adsorbate on the adsorption efficiency. The BBD was conducted using Google Colaboratory software, which encompassed 27 experiments with randomly assigned… More > Graphic Abstract

    Silica Gel from Chemical Glass Bottle Waste as Adsorbent for Methylene Blue: Optimization Using BBD

  • Open Access

    ARTICLE

    Preparation of Peanut Shell Cellulose Double-Network Hydrogel and Its Adsorption Capacity for Methylene Blue

    Yalin Li1,*, Lei Liu1, Wenbao Huang1, Junpu Xie2, Zhaoxia Song1, Shuna Guo1, Enci Wang1

    Journal of Renewable Materials, Vol.11, No.7, pp. 3001-3023, 2023, DOI:10.32604/jrm.2023.026604

    Abstract To achieve optimal recovery and value-added utilisation of cellulose in peanut shells, the cellulose in peanut shells was first extracted using the sodium hydroxide-sodium chlorite method. Then, cellulose hydrogel was prepared by graft copolymerisation using N, N’-methylenebisacrylamide as the cross-linking agent, sodium persulfate as the initiator, and acrylic acid as the monomer. Orthogonal optimisation experiments were designed to obtain optimal process parameters for hydrogel preparation with the cellulose dosage of 0.40 g, initiator dosage of 0.20 g, polymerisation temperature of 70°C, cross-linking agent of 0.25 g, and monomer dosage of 3.0 mL. The effect of initiator… More > Graphic Abstract

    Preparation of Peanut Shell Cellulose Double-Network Hydrogel and Its Adsorption Capacity for Methylene Blue

  • Open Access

    ERRATUM

    Preparation of Kenaf Biochar and Its Adsorption Properties for Methylene Blue

    Xin Wan1,2,#, Zhigang Xia3,4,#, Xiaoli Yang1,2, Chengfeng Zhou2, Yuanming Zhang1,2, Haoxi Ben1,2, Guangting Han1,2, Wei Jiang1,2,*

    Journal of Renewable Materials, Vol.11, No.3, pp. 1531-1531, 2023, DOI:10.32604/jrm.2023.027109

    Abstract This article has no abstract. More >

  • Open Access

    ARTICLE

    Optimization of Photo-Fenton Catalyst Preparation Based Bamboo Carbon Fiber by Response Surface Methodology

    Yizhang Wang1, Zhaoyang Yu1, Jinbo Hu1,2,*, Shanshan Chang1, Yuan Liu1, Ting Li2, Gonggang Liu1,*, Xiaodong (Alice) Wang3

    Journal of Renewable Materials, Vol.11, No.1, pp. 147-165, 2023, DOI:10.32604/jrm.2023.021306

    Abstract In this paper, the residue from bamboo factory has been used to design photo-Fenton catalyst, which has the advantages of low cost and magnetic recycling. The photo-Fenton catalytic performance of the biocarbon-based catalyst was excellent and its optimal preparation process was also explored by response surface methodology. First, bamboo-carbon fiber was selected as the photo-Fenton catalyst carrier. Subsequently, the surface of the carbon fiber was modified, with which dopamine, nano-Fe3O4 and nano-TiO2 were successively loaded by hydrothermal method. After examined single factor tests, four factors including dopamine concentration, ferric chloride mass, P25 titanium dioxide mass and… More > Graphic Abstract

    Optimization of Photo-Fenton Catalyst Preparation Based Bamboo Carbon Fiber by Response Surface Methodology

  • Open Access

    ARTICLE

    Preparation of Kenaf Biochar and Its Adsorption Properties for Methylene Blue

    Xin Wan1,2,#, Zhigang Xia3,4,#, Xiaoli Yang1,2, Chengfeng Zhou2, Yuanming Zhang1,2, Haoxi Ben1,2, Guangting Han1,2, Wei Jiang1,2,*

    Journal of Renewable Materials, Vol.10, No.12, pp. 3391-3404, 2022, DOI:10.32604/jrm.2022.021102

    Abstract The toxic dyestuffs from printing and dyeing wastewater have caused serious damages to the ecological environment, thus exploring effective methods to remove them having become a key topic. Here, a series of biochar samples were synthesized form kenaf to adsorb methylene blue (MB), which was acted as the dye representative for the test of adsorption capacity due to the presence of abundant double bond and aromatic heterocyclic ring. By tuning the raw materials and pyrolysis temperature, a super adsorption capacity about 164.21 mg·g–1 was obtained over the biochar that pyrolyzed at 700°C with the kenaf fiber… More >

  • Open Access

    ARTICLE

    Rice Husk Bio-Chars as Adsorbent for Methylene Blue and Ethinylestradiol from Water

    Jonathan Lacuesta1,*, Iris Beatriz Vega Erramuspe2, Liji Sobhana2, Dennis Kronlund3, Jouko Peltonen3, Soledad Gutiérrez1, Pedro Fardim2,4

    Journal of Renewable Materials, Vol.8, No.3, pp. 275-287, 2020, DOI:10.32604/jrm.2020.08861

    Abstract Biobased adsorbents are eco-friendly materials used for water and wastewater treatment and air cleaning. This research work explores the potential use of rice husk chars as a low-cost adsorbent for pollutants from water, such as methylene blue and ethinylestradiol. Rice husk chars are prepared by combustion of rice husks (RH-Char) or pre-treated rice husks (PT-Char). A third char (M-Char) supplied by a local company which uses rice husks as combustion material is also studied. The chars are characterized by field emission scanning electron microscopy (FE-SEM) in conjunction with energy dispersive X-ray spectroscopy (EDX), X-ray powder… More >

  • Open Access

    ARTICLE

    Alginate Composite Hydrogel Bead with Multilayer Flake Structure for Dye Adsorptions

    Xiaoyu Chen*, Jie Zhu

    Journal of Renewable Materials, Vol.7, No.10, pp. 983-996, 2019, DOI:10.32604/jrm.2019.07325

    Abstract With the rapid development of textile industry, a large amount of dye-contaminated effluents was produced and caused serious environmental problem. To remove the dye from effluents, adsorption materials have been applied because of their relatively cheap, high efficiency, and easy handling. In this study, a novel composite hydrogel bead with unique multilayer flake structure was fabricated by alginate, acrylamide and attapulgite for dye adsorption. Acrylamide was grafted polymerization onto alginate to obtain alginate-g-poly(acrylamide). Then alginate-g-poly(acrylamide) was cross-linked by Ca2+ ions in present of attapulgite to form composite hydrogel bead. Scanning electron microscopy (SEM) results show that… More >

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