Yongdong Xu, Tingshu He^*

Journal of Renewable Materials, Vol.9, No.11, pp. 1991-1999, 2021, DOI:10.32604/jrm.2021.015931

Abstract This work aims to utilize waste glass powder (WGP) as a plementary material to mitigate the strength shrinkage caused by the alkaline accelerator. Waste glass power was used to replace cement by 0%, 10%, and 20% to evaluate waste glass powder on the alkaline accelerator’s strength retrogradation. The results show that the strength improvement effect of unitary glass powder is inconspicuous. Innovative methods have been proposed to use sodium sulfate and waste glass powder synergism, using the activity of amorphous silica in glass powder. Compared with the reference group, the compressive strength of 28d mortar increases by 67% when the… More >

Xuying Guo^1,*, Guoliang Jiang², Saiou Fu³, Zhiyong Hu³, Junzhen Di², Yanrong Dong², Ying Li⁴

Journal of Renewable Materials, Vol.9, No.11, pp. 2015-2032, 2021, DOI:10.32604/jrm.2021.015878

Abstract To solve the problems of high Cr⁶⁺, Cr³⁺, SO₄^2– and H⁺ concentrations, pollution and processing costs associated with agate dyeing industrial drainage, we prepared an immobilized gel mixture for the treatment of such drainage on the basis of microbial immobilization technology. The immobilized gel mixture was composed of sulfate-reducing bacteria (SRB), corn cob, and nano-Fe₃O₄ (nFe₃O₄). We used a single-factor experiment to determine the optimal dose of each matrix component. We analyzed the mechanism underlying the treatment of agate dyeing wastewater with an immobilized gel mixture by X-ray diffraction and scanning electron microscopy detection. The results of the single-factor test… More >

Natthanan Wonganan, Chainarong Athisakul^*, Peerasit Mahasuwanchai, Weerachart Tangchirapat, Raktipong Sahamitmongkol, Sutat Leelataviwat

Journal of Renewable Materials, Vol.9, No.10, pp. 1821-1821, 2021, DOI:10.32604/jrm.2021.017452

Abstract This article has no abstract. More >

Lei Guo^1,2,3,4, Pingping Chen¹, Lixia Guo^1,2,3,*, Zhilong Xue⁴, Zi Guan¹, Mingru Li¹

Journal of Renewable Materials, Vol.9, No.10, pp. 1805-1819, 2021, DOI:10.32604/jrm.2021.015140

Abstract In order to explore the relationship between the macroscopic properties and pore structure characteristics of baking-free slag-sludge bricks, the compressive strength and water absorption rate using aluminum industrial slag and sludge of different substitution rates were tested. Optical instruments and image analysis software were used to measure the parameters of the pore structure. Specifically, a fractal model was built based on the fractal theory, in which the fractal dimension was used as the characteristic index of the pore structure to analyze the correlation and interaction mechanism between the fractal dimension and the macroscopic mechanical properties. Based on this study, conclusions… More >

Li Luo^*, Xiaoyu Wang, Kang Zhou, Shenjian Ni, Xiaonin Lu, Bin Na^*

Journal of Renewable Materials, Vol.9, No.10, pp. 1795-1803, 2021, DOI:10.32604/jrm.2021.015027

Abstract Magnesite-bonded wood wool panel (MWWP) is an inorganic-bonded panel product in which wood excelsior is bonded with magnesite. Lowering the hygroscopicity is one of the key measures to improve the quality of the panel. In this study, moisture absorption mechanism of MWWP and measures generally applied to lower its hygroscopicity were reviewed. Three methods were then experimented to improve the dimensional stability of the panel, including adjusting the molar ratio of raw materials, adding additives and optimizing the conditioning process. The results showed that satisfying dimensional stability could be achieved when the molar ratio of MgO to MgCl₂ was 5:1,… More > Graphic Abstract

Benan Shu^1,*, Lixian Guo¹, Bing Qiu¹, Tengyu Yang¹, Tao Sun¹, Wenjun Qiu¹, Min Zhou¹, Putao Song², Yuanyuan Li³, Diego Maria Barbieri⁴, Shaopeng Wu^5,*

Journal of Renewable Materials, Vol.9, No.10, pp. 1781-1794, 2021, DOI:10.32604/jrm.2021.015659

Abstract As an innovative maintenance technology of asphalt pavement, encapsulated rejuvenator used to improve its self-healing performance has been widely investigated by researchers in recent years. In this work, the selfhealing properties of asphalt mixture with and without encapsulations were comparatively studied considering these parameters: Healing time, healing cycles and microwave heating. Three-point bending strength recovery test and fatigue loading cycles recovery test were conducted for two kinds of encapsulations containing the healing agents present inside the asphalt mixture, namely compartmented Ca-alginate/SiO2 fiber and compartmented Ca-alginate/graphene oxide fiber. The results showed that the optimum healing time was three days. After the… More >

Yingna Chen¹, Hailong Zhang², Jian Guo¹, Lu Cai³, Yaning Wang⁴, Xinxin Yao⁵, Wendong Song⁶, Lili Ji^4,*

Journal of Renewable Materials, Vol.9, No.10, pp. 1741-1755, 2021, DOI:10.32604/jrm.2021.015924

Abstract The global consumption of p-xylene (PX) for the production of polymers has raised serious concerns about its impact on the environment. As various reports have shown the risks that PX could pose to human health, research into cost-effective remedial methods to remove PX from the environment has gained attraction. In this work, a hierarchical porous crab shell biochar (KCS) was synthesized, characterized, and evaluated for its effi- ciency to remove PX from aqueous solution. The characterizations of KCS, including the porous structure, surface functional group, phase structure, and surface morphology, were discussed by N₂ adsorption-desorption, FTIR, XRD, and SEM. Batch… More > Graphic Abstract

Long Zheng, Yiqiang Wu, Shu Wang, Guoan Sheng, Baorong Sun, Yingfeng Zuo^*

Journal of Renewable Materials, Vol.9, No.10, pp. 1729-1739, 2021, DOI:10.32604/jrm.2021.015143

Abstract This study was designed to solve the problem of large waste volume from bamboo processing residues in recent years. Using magnesium oxychloride (MO) cementitious material as the main material and bamboo residue (BR) as the reinforcing material, a BR/MO composite material was prepared. The effects of BR amount on the molding properties, mechanical strength, and water resistance of BR/MO composites were examined and discussed. Scanning electron microscopy (SEM), X-ray diffractometry (XRD), and thermogravimetric analysis were used to characterize composite microscopic morphology, crystalline structure, and heat resistance. The results showed that, when the BR content was 1.00% (by wt), the flowability… More >

Heru Suryanto^1,2,*, Muhamad Muhajir¹, Bili Darnanto Susilo¹, Yanuar Rohmat Aji Pradana¹, Husni Wahyu Wijaya^2,3, Abu Saad Ansari⁴, Uun Yanuhar⁵

Journal of Renewable Materials, Vol.9, No.10, pp. 1717-1728, 2021, DOI:10.32604/jrm.2021.015312

Abstract The microstructure of bacterial cellulose nanofibers (BCNs) film affects its characteristic. One of several means to engineer the microstructure is by changing the BCNs size and fiber distribution through a high-pressure homogenizer (HPH) process. This research aimed to find out the effects of repetition cycles on HPH process towards BCNs film characteristics. To prepare BCNs films, a pellicle from the fermentation of pineapple peels waste with Acetobacter xylinum (A. xylinum) was extracted, followed by crushing the pellicle with a high-speed blender, thereafter, homogenized using HPH at 150 bar pressure with variations of 5, 10, 15, and 20 cycles. The BCNs… More >

Ling Wang^1,2, Chenchen Huang¹, Ping Zhang³, Fenghua Liu^1,*, Ting Zou¹, Zhixiang Li¹, Jianfei Zhang¹, Gaojie Xu¹

Journal of Renewable Materials, Vol.9, No.10, pp. 1707-1715, 2021, DOI:10.32604/jrm.2021.013884

Abstract Using palygorskite (PAL) as template, the PAL/TiO₂/PANI nano-rods were synthesized by heterogeneous precipitation and in-situ polymerization. The synthesized PAL/TiO₂/PANI nanorods were used as a novel electrorheological (ER) fluid by mixing with silicone oil, which showed excellent ER effect. The yield stress of the PAL/TiO₂/PANI based ER fluid (15 vol%) reached 8.8 kPa under 4 kV mm⁻¹ electric field. The dynamic shear stress of the PAL/TiO₂/PANI based ER fluid could maintain a stable level in the shear rate range of 0.1–100 s⁻¹ . Furthermore, the PAL/TiO₂/PANI ER fluid exhibited excellent suspension stability. More >