Recent Development of Algal Biochar for Contaminant Remediation and Energy Application: A State-of-the Art Review

Nguyen, Thanh-Binh; Nguyen, Van-Truc; Hoang, Hong-Giang; Cao, Ngoc-Dan-Thanh; Nguyen, Thanh-Tin; Vo, Thi-Dieu-Hien; Nguyen, Ngoc-Kim-Qui; Pham, Mai-Duy-Thong; Nghiem, Duc-Long; Vo, Thi‐Kim‐Quyen; Dong, Cheng–Di; Bui, Xuan‐Thanh

doi:10.1007/s40726-022-00243-6

Cited by 12 publications

(8 citation statements)

References 113 publications

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“…Recently, the same results were reported by Castro et al [47], who found that a retention time of 10 min and temperature of 170 • C resulted in a high solid yield of 77.72% from microalgal biomass. Low carbonization temperature yields high-yield hydrochar with high-quality properties such as controlled porosity, electronic properties, regulated surface chemistry, and functional surfaces (e.g., -C=O, -COOH, -OH) [7]. In addition, Castro et al [47] found that during the HTC process, the level of hydrogen and carbon was increased while the level of nitrogen and oxygen was decreased, and therefore a lower oxygen-to-carbon ration was found during the HTC process, resulting in solids with high hydrophobicity properties.…”

Section: Hydrothermal Carbonizationmentioning

confidence: 99%

“…The chemical properties include ash content, moisture content, fixed carbon, and volatile matter. According to Yu et al [7], biochar produced from Gracilaria sp. have more moisture content than biochar derived from Chlorella vulgaris.…”

Section: Chemical Propertiesmentioning

confidence: 99%

“…The biomass content (such as cellulose, lignin, protein, etc.) and its thermochemical process (e.g., hydrothermal liquefaction, pyrolysis, torrefaction, gasification, direct combustion) have a significant impact on the structure and physicochemical features of biochar [6,7]. By modifying heating conditions (final temperature and heating rate) and biomass precursors, biochar with high physicochemical characteristics, porous structure, and structural stability, as well as having enough surface functional groups and ash, may be particularly developed [8].…”

Section: Introductionmentioning

confidence: 99%

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An Overview of Green Bioprocessing of Algae-Derived Biochar and Biopolymers: Synthesis, Preparation, and Potential Applications

et al. 2023

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Algae have the potential to be used as a feedstock for the synthesis of valuable compounds and biofuels. In addition, algal waste can be further transformed into biofuel, biogas, and biochar using different thermochemical processes such as microwave pyrolysis, pyrolysis, torrefaction, and hydrothermal conversion. Due to its high specific surface area, rapid electron transport, and graphitic carbon structure, algal biochar carbonized at high temperatures has shown outstanding performance for applications as CO2 adsorbents, supercapacitors, and persulfate activation. Due to the combination of various functional groups and porous structures, the algae biomass pyrolysis at a moderate temperature produced high-quality biochar that shows high performance in terms of pollutant removal, while low-temperature pyrolysis produces coal fuel from algae via torrefaction. Over time, there have been exponentially more petroleum-based polymers created that have harmful impacts on both humans and the environment. As a result, researchers are becoming more interested in algae-based biopolymers as a potential alternative strategy for establishing a sustainable circular economy globally. The advantages of microalgal biopolymer over other feedstocks are its capacity to compost, which provides greenhouse gas credits, its quick growth ability with flexibility in a variety of settings, and its ability to minimize greenhouse gas emissions.

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Section: Hydrothermal Carbonizationmentioning

confidence: 99%

Section: Chemical Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An Overview of Green Bioprocessing of Algae-Derived Biochar and Biopolymers: Synthesis, Preparation, and Potential Applications

et al. 2023

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“…Recently, biochar has been increasingly being used for the mitigation of heavy metal pollution in agricultural elds (Chen et al, 2021;Khosropour et al, 2022;Rahi et al, 2022;Wang et al, 2023). Biochar is characterized as a highly carbonaceous, alkaline compound derived from the pyrolysis of biomass at high temperatures under oxygen-restricted or non-oxygenated environments, which has a relatively high speculative surface, considerable porosity, negatively loaded super cial chemical functional groups, and strong absorption capacity that can enhance immobilize heavy metals in soil (He et al, 2019;Ibrahim et al, 2020;Nguyen et al, 2022). Yuan et al, (2023) showed that rape straw biochar remarkably enhanced soil pH, and promoted Cd adsorption in iron minerals through increased iron hydroxylation and recrystallization processes.…”

Section: Introductionmentioning

confidence: 99%

Impacts of biochar-based amendment on soil cadmium immobilization, rice grain cadmium accumulation and yield

Han,

Wu,

Yang

et al. 2024

Preprint

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Cadmium (Cd) contamination in soil is of severe health and environmental concern because of its threat to human health, food safety, and ecosystem sustainability. The in situ stabilization of Cd has been recognized as a potentially economical technique for the rehabilitation of soil polluted with Cd. Biochar has recently received much attention as an eco-friendly and recyclable soil amendment, which is more beneficial for plant growth, soil health, and restoration of contaminated soil. An experiment was performed in the field to study the efficiency of three different types of biochar: maize straw biochar, bamboo biochar, and coconut shell activated carbon in combination with rape organic fertilizer (ROF), calcium magnesium phosphate fertilizer (CMPF), and fulvic acid (MFA), respectively, on soil Cd immobilization, Cd uptake by rice, and rice yield. The experiment indicated that the biochar-based amendments reduced soil Cd bioavailability and rice Cd content by 9.58%-27.06% and 19.30%-71.77%, respectively. The transformation of exchangeable Cd (Ex-Cd) to carbonate bound Cd (Ca-Cd), Fe-Mn oxide bond (Ox-Cd), and residual (Re-Cd) in soil accounted for the mitigation of Cd absorption and enrichment by rice. In addition, the biochar-based amendments altered soil physicochemical properties and promoted soil health. Biochar-based amendments enhanced Fe and Mn plaques by 47.31%-160.34% and 25.72%-73.09%, respectively. The correlation analysis revealed that leaf Cd and Fe/Mn plaques primarily controlled Cd uptake by rice, and soil pH, Eh, CEC, SOC, Fe/Mn plaques, and TP influenced Cd bioavailability in soil. This field study demonstrated that maize straw and bamboo biochar-based amendments had a higher benefit and were potentially applicable to ameliorating metal-contaminated agricultural soil.

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“…Macroalgae and seagrasses have emerged as promising feedstock for biochar production [4,[39][40][41][42][43][44][45][46]. They are particularly relevant in coastal regions, including sea and lagoon coasts, salt marshes, and wetlands.…”

Section: Introductionmentioning

confidence: 99%

Using Aquatic Plant-Derived Biochars as Carbon Materials for the Negative Electrodes of Li-Ion Batteries

Belmesov,

Glukhov,

Kayumov

et al. 2023

Coatings

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The current study focuses on the production of biochars derived from aquatic plants, specifically red seaweed Ahnfeltia and seagrass Zostera and Ruppia, found in brackish lagoons in the Sea of Okhotsk, Sakhalin Island. These biochars were obtained through a stepwise pyrolysis process conducted at temperatures of 500 and 700 °C. The characteristics of the biochars, including their elemental composition, specific surface area, and particle size distribution, were found to be influenced by both the type of biomass used and the pyrolysis temperature. The primary objective of this research was to investigate the potential of these biochars to be used as negative electrodes for lithium ion batteries. Among the various samples we tested, the biochar derived from the macroalgae Ahnfeltia tobuchiensis, produced at 700 °C, exhibited the highest carbon content (70 at%) and nitrogen content (>5 at%). The reversible capacity of this particular biochar was measured to be 391 mAh g−1 during the initial cycles and remained relatively stable at around 300 mAh g−1 after 25 cycles. These findings suggest that biochars derived from aquatic plants have the potential to be utilized as effective electrode materials in lithium ion batteries. The specific properties of the biochar, such as its elemental composition and surface area, play a significant role in determining its electrochemical performance. Further research and optimization of the pyrolysis conditions may lead to the development of biochar-based electrodes with improved capacity and cycling stability, thereby contributing to the advancement of sustainable and environmentally friendly energy storage systems.

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Recent Development of Algal Biochar for Contaminant Remediation and Energy Application: A State-of-the Art Review

Cited by 12 publications

References 113 publications

An Overview of Green Bioprocessing of Algae-Derived Biochar and Biopolymers: Synthesis, Preparation, and Potential Applications

An Overview of Green Bioprocessing of Algae-Derived Biochar and Biopolymers: Synthesis, Preparation, and Potential Applications

Impacts of biochar-based amendment on soil cadmium immobilization, rice grain cadmium accumulation and yield

Using Aquatic Plant-Derived Biochars as Carbon Materials for the Negative Electrodes of Li-Ion Batteries

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