Tag: biochar

Peer-reviewed Publications

Murali & Wong (2024): A comprehensive review of biochar-modified concrete: Mechanical performance and microstructural insights

G. Murali, Leong Sing Wong IN: Construction and Building Materials, 425, 135986, https://doi.org/10.1016/j.conbuildmat.2024.135986

This review article comprehensively analyses biochar’s source and properties to evaluate its effectiveness as a cement substitute in cement-based materials and concrete. The review begins by exploring the different methods utilized in biochar production, focusing on how they influence its chemical properties. This review assesses the properties of fresh and hardened cement mortars and concrete, incorporating biochar while investigating their microstructural characteristics.

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Peer-reviewed Publications

Han et al. (2024): Carbon sequestration potential of biochar in soil from the perspective of organic carbon structural modification

Lanfang Han, Cuiling Lu, Liying Chen, Fayuan Wang, Qi’ang Chen, Kuo Gao, Yuanyuan Yu, Chao Xu IN: Applied Soil Ecology, 198, 105389, https://doi.org/10.1016/j.apsoil.2024.105389

While there has been extensive research on the priming effect of biochar on the mineralization of native soil organic carbon (nSOC), its correlation with soil organic carbon (SOC) structural variations remains poorly understood. A series of incubation experiments with soils amended with biochar prepared at 300 °C, 450 °C, and 600 °C were performed to explore the shifts in nSOC structure and reveal the interconnections among soil properties, SOC structural variation, and the priming effect induced by biochar.

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Peer-reviewed Publications

E et al. (2024): Effect of waste leather dander biochar on soil organic carbon sequestration

Tao E, Cheng Ji, Ying Cheng, Shuyi Yang, Liang Chen, Daohan Wang, Yuanfei Wang, Yun Li IN: Journal of Environmental Chemical Engineering, 12, 3, 112633, https://doi.org/10.1016/j.jece.2024.112633

In order to determine the carbon sequestration content of waste leather dander biochar (W-BC) at different pyrolysis temperatures and its effect on soil organic carbon mineralization, waste leather dander (WLD) was prepared into BC-300, BC-400 and BC-500 at different temperatures (300, 400 and 500 °C).

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Peer-reviewed Publications

Tang & Qiu (2024): CO2-sequestering ability of lightweight concrete based on reactive magnesia cement and high-dosage biochar aggregate

Yihong Tang, Jishen Qiu IN: Journal of Cleaner Production, 451, 141922, https://doi.org/10.1016/j.jclepro.2024.141922

In this study, lightweight concretes based on reactive magnesia cement (RMC) and high amount of biochar aggregates (up to 508 kg/m3, 61 vol% of the concrete) are developed. The new material demonstrates the ability to sequestrate massive amounts of CO2 from ambient air, and thus has the potential to be used for greener non-structural applications. The CO2 sequestration during curing under high-concentration CO2 (10 %), which is mainly via the RMC carbonation, is determined by acid digestion. The CO2 sequestration during service under ambient CO2 concentration (0.1%, or 1000 ppm), which is via the continued carbonation of RMC and the adsorption of biochar, is determined by monitoring the removal of CO2 in situ; particularly, the CO2 sequestrations by the RMC and the biochar are determined separately. The effect of varying biochar content and CO2 curing time on the overall CO2 sequestering ability of the concrete are studied, together with the variation of the local CO2 sequestration with carbonation depth in the concrete.

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Peer-reviewed Publications

Chen et al. (2024): Effect of Biochar Types and Rates on SOC and Its Active Fractions in Tropical Farmlands of China

Mingwan Chen, Daquan Liu, Xujie Shao, Shoupeng Li, Xin Jin, Jincun Qi, Hong Liu, Chen Li, Changjiang Li, Changzhen Li  IN: Agronomy, https://doi.org/10.3390/agronomy14040676

This study aimed to determine the impact of different types and rates of biochar applied in tropical farmlands on so SOC and its active fractions. The SOC, microbial biomass carbon (MBC), dissolved organic carbon (DOC), and soil mineralizable carbon (SMC) in the 0–30 cm soil layers under rice hull (R) and peanut shell (P) biochar treatments were measured. The results showed that the application of R and P biochar increased the contents, stocks, and cumulative stocks of SOC, MBC, and DOC in the 0–10 cm, 10–20 cm, and 20–30 cm soil layers. 

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Peer-reviewed Publications

Rathnayake et al. (2024): Quantifying soil organic carbon after biochar application: how to avoid (the risk of) counting CDR twice?

Dilani Rathnayake, Hans-Peter Schmidt, Jens Leifeld, Diane Bürge, Thomas D. Bucheli, Nikolas Hagemann IN: Frontiers in Climate, https://doi.org/10.3389/fclim.2024.1343516

The objectives of this review are (1) to compare the physicochemical properties and the quantities of biochar and SOC fractions on a global and field/site-specific scale, (2) to evaluate the established methods of SOC and pyrogenic carbon (PyC) quantification with regard to their suitability in routine analysis, and (3) to assess whether double counting of SOC and biochar C-sinks can be avoided via analytical techniques.

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Peer-reviewed Publications

Xu et al. (2024): Durability and micromechanical properties of biochar in biochar-cement composites under marine environment

Weijian Xu, Yuying Zhang, Muduo Li, Fulin Qu, Chi Sun Poon, Xiaohong Zhu, Daniel C.W. Tsang IN: Journal of Cleaner Production 450, 141842, https://doi.org/10.1016/j.jclepro.2024.141842

Integrating biochar into traditional construction materials presents a promising avenue to reduce carbon emissions from the construction industry. While recent research has focused on the performance of biochar-cement materials, limited attention is given to the durability of biochar in cementitious materials. This study investigated the alterations in the structural, chemical, and mechanical properties of biochar in the cementitious system and marine environment. 

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Peer-reviewed Publications

Serafimova & Dedelyanova (2024): The Potential For Carbon Sequestration In Reclaimed Mine Soil

Ekaterina Serafimova, Kremena Dedelyanova IN: Journal of Chemical Technology and Metallurgy, https://doi.org/10.59957/jctm.v59.i2.2024.20

Mining sector has been the central attention of the business and public policy sustainable development scheme for several years. Reclamation territories are with potential carbon sequestration capacity in degraded mining areas and can be an impeccable option for achieving sustainable development goal-13. This paper made an investigation about the presence of heavy metals in reclaimed area possibilities to improve reclaimed soils with biochar with idea to enhance ecosystem carbon pool and atmospheric CO2 sequestration capacity to offset CO2 emission and soil organic carbon losses.

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Reports

Biochar Permanence Report: Unlocking the Potential of Biochar: A Closer Look at Its Permanence

Bier, H., Lerchenmüller, H., European Biochar Industry, March 14, 2024

In the quest to understand permanence of biochar, our report sheds light on critical findings from two scientific publications by Sanei et al. (2024) and Azzi et al. (2024). The report, authored by Secretary General Harald Bier and Board Chairman Hansjörg Lerchenmüller at EBI, offers a comparative analysis of results from the two studies. It reveals a key gap: most incubation experiments use carbonized material that is not representative of biochar produced commercially today. Moreover, these studies often lack detailed characterization of biochar fractions, hindering a comprehensive understanding of their properties. Another key point posited in the paper is that the observed degradation rates shown in incubation experiments are consistent with the size of the labile fractions that are known to be easily degradable.

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