Improvement effect of pyrolyzed agro-food biochar on the properties of magnesium phosphate cement

Ahmad, Muhammad Riaz; Chen, Bing; Duan, Haijuan

doi:10.1016/j.scitotenv.2020.137422

Cited by 43 publications

(12 citation statements)

References 52 publications

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“…The denser microstructure is a result of the reaction between the magnesium phosphate cement and biochar. According to Ahmad et al [72], the biochar particles filled the micropores and voids in the magnesium phosphate mortar, as seen in Figure 3d. In this study, biochar was added at three different weight percentages (0.5%, 1.0%, and 1.5%) and its compressive and flexural strength were measured.…”

Section: Microstructure and Interfacial Bonding In Biochar/cementitious Materialsmentioning

confidence: 79%

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Biochar-Added Cementitious Materials—A Review on Mechanical, Thermal, and Environmental Properties

Mensah

Vigneshwaran

Narayanan³

et al. 2021

Sustainability

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The enhanced carbon footprint of the construction sector has created the need for CO2 emission control and mitigation. CO2 emissions in the construction sector are influenced by a variety of factors, including raw material preparation, cement production, and, most notably, the construction process. Thus, using biobased constituents in cement could reduce CO2 emissions. However, biobased constituents can degrade and have a negative impact on cement performance. Recently, carbonised biomass known as biochar has been found to be an effective partial replacement for cement. Various studies have reported improved mechanical strength and thermal properties with the inclusion of biochar in concrete. To comprehend the properties of biochar-added cementitious materials, the properties of biochar and their effect on concrete need to be examined. This review provides a critical examination of the mechanical and thermal properties of biochar and biochar-added cementitious materials. The study also covers biochar’s life cycle assessment and economic benefits. Overall, the purpose of this review article is to provide a means for researchers in the relevant field to gain a deeper understanding of the innate properties of biochar imparted into biochar-added cementitious materials for property enhancement and reduction of CO2 emissions.

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Section: Microstructure and Interfacial Bonding In Biochar/cementitious Materialsmentioning

confidence: 79%

“…The porous ridge surface of the biochar facilitates the infiltration of the cementitious matrix, resulting in strong interfacial bonding. [71]; (c) denser microstructure [72]; (d) biochar filling micro pores and cracks [72].…”

Section: Microstructure and Interfacial Bonding In Biochar/cementitious Materialsmentioning

confidence: 99%

Biochar-Added Cementitious Materials—A Review on Mechanical, Thermal, and Environmental Properties

Mensah

Vigneshwaran

Narayanan³

et al. 2021

Sustainability

View full text Add to dashboard Cite

show abstract

“…As an example, for wheat and barley straw, advanced biomaterials for construction materials, phycoremediation of wastewater, cement properties enhancer and fibres in concrete were reported [ 87 , 88 , 89 , 90 , 91 , 92 ]. Straws and stalks from other sources were also focused on for board production, being potentially suitable for beaverboard, packing materials, one-use tableware or seeding devices [ 93 , 94 ].…”

Section: Lignocellulosic Materials For the Production Of Biofuels Bio...mentioning

confidence: 99%

Lignocellulosic Materials for the Production of Biofuels, Biochemicals and Biomaterials and Applications of Lignocellulose-Based Polyurethanes: A Review

2022

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The present review is devoted to the description of the state-of-the-art techniques and procedures concerning treatments and modifications of lignocellulosic materials in order to use them as precursors for biomaterials, biochemicals and biofuels, with particular focus on lignin and lignin-based products. Four different main pretreatment types are outlined, i.e., thermal, mechanical, chemical and biological, with special emphasis on the biological action of fungi and bacteria. Therefore, by selecting a determined type of fungi or bacteria, some of the fractions may remain unaltered, while others may be decomposed. In this sense, the possibilities to obtain different final products are massive, depending on the type of microorganism and the biomass selected. Biofuels, biochemicals and biomaterials derived from lignocellulose are extensively described, covering those obtained from the lignocellulose as a whole, but also from the main biopolymers that comprise its structure, i.e., cellulose, hemicellulose and lignin. In addition, special attention has been paid to the formulation of bio-polyurethanes from lignocellulosic materials, focusing more specifically on their applications in the lubricant, adhesive and cushioning material fields. High-performance alternatives to petroleum-derived products have been reported, such as adhesives that substantially exceed the adhesion performance of those commercially available in different surfaces, lubricating greases with tribological behaviour superior to those in lithium and calcium soap and elastomers with excellent static and dynamic performance.

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“…There are also reports in the literature of the use of biochar in the construction field. In many applications, for example, cement or other building materials, an improvement of physical and thermal properties is found when biochar is added [14][15][16][17]. In the last year alone, interesting works have been published in this area which we report briefly below.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Biochar-Based Geopolymer Materials

et al. 2021

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The aim of this research is to evaluate the possibility to realize alkali-activated materials exploiting biochar, a secondary raw material coming from pyrolysis/gasification processes, for environmental benefits, such as improvement of soil fertility and reduction of CO2 emissions into the atmosphere thanks to the carbon sink process where carbon dioxide is subtracted from the cycle of carbon. For the matrix of the geopolymers, a waste material derived from incinerator bottom ash was used and compared to pure metakaolin matrix. The materials obtained are lightweight and porous, with high water absorption capacity and moisture adsorption/desorption. BET analysis shows an increase in specific surface by increasing the biochar content and the biochar acts as a filler in the pores. From porosimetry analysis it is possible to follow the evolution of the curing process of the geopolymer prepared: specimens containing 70 wt% biochar after 28 and 90 days showed an increase in total Hg intrusion volume, pore area and total porosity but a decrease in the dimensions of pores. Due to the technical properties of materials containing biochar, they can be used in the future for a cleaner design of products in the field of sustainable construction for insulating panels or lightweight materials for houses and gardens in terraces and balconies.

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Improvement effect of pyrolyzed agro-food biochar on the properties of magnesium phosphate cement

Cited by 43 publications

References 52 publications

Biochar-Added Cementitious Materials—A Review on Mechanical, Thermal, and Environmental Properties

Biochar-Added Cementitious Materials—A Review on Mechanical, Thermal, and Environmental Properties

Lignocellulosic Materials for the Production of Biofuels, Biochemicals and Biomaterials and Applications of Lignocellulose-Based Polyurethanes: A Review

Synthesis and Characterization of Biochar-Based Geopolymer Materials

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