Tailoring biochar for persulfate-based environmental catalysis: Impact of biomass feedstocks

Song, Ge; Qin, Fanzhi; Yu, Jiangfang; Tang, Lin; Pang, Ya; Zhang, Chen; Wang, Jiajia; Deng, Lifei

doi:10.1016/j.jhazmat.2021.127663

Cited by 78 publications

(12 citation statements)

References 241 publications

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“…According to recent studies, the biomass precursor is a critical factor for affecting the performance of BC catalysts in AOPs because biomass feedstocks could directly impact the performance and physicochemical properties of BC by affecting the composition and structure of BC, thereby playing a decisive role in the activity and reactivity of BC to some extent. 37,38 The SHAP values shown in Figure 2a also confirm the considerable potential of BMP to improve the NR contribution of BC among the input features. Therefore, the correlation of BMP to SSA and O% was studied to improve NR performance for BC catalysts.…”

Section: Data Collection and Preprocessingmentioning

confidence: 55%

Enhancing Biochar-Based Nonradical Persulfate Activation Using Data-Driven Techniques

Wang

Zhang

Chen

et al. 2023

Environ. Sci. Technol.

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Converting biomass into biochar (BC) as a functional biocatalyst to accelerate persulfate activation for water remediation has attracted much attention. However, due to the complex structure of BC and the difficulty in identifying the intrinsic active sites, it is essential to understand the link between various properties of BC and the corresponding mechanisms promoting nonradicals. Machine learning (ML) recently demonstrated significant potential for material design and property enhancement to help tackle this problem. Herein, ML techniques were applied to guide the rational design of BC for the targeted acceleration of nonradical pathways. The results showed a high specific surface area, and O% values can significantly enhance nonradical contribution. Furthermore, the two features can be regulated by simultaneously tuning the temperatures and biomass precursors for efficient directed nonradical degradation. Finally, two nonradical-enhanced BCs with different active sites were prepared based on the ML results. This work serves as a proof of concept for applying ML in the synthesis of tailored BC for persulfate activation, thereby revealing the remarkable capability of ML for accelerating bio-based catalyst development.

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Section: Data Collection and Preprocessingmentioning

confidence: 55%

Enhancing Biochar-Based Nonradical Persulfate Activation Using Data-Driven Techniques

Wang

Zhang

Chen

et al. 2023

Environ. Sci. Technol.

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“…N-doping is considered to be an effective method to enhance the catalytic performance of inert carbonaceous materials by tuning the spin density and charge distribution [ 31 , 44 , 45 , 46 , 47 ]. As shown in Table 1 , we summarized the recent NBC materials for PS-AOP.…”

Section: Preparation and Modification Of Nbcmentioning

confidence: 99%

A Review on N-Doped Biochar for Oxidative Degradation of Organic Contaminants in Wastewater by Persulfate Activation

Gao

Zhu

et al. 2022

IJERPH

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The Persulfate-based advanced oxidation process is the most efficient and commonly used technology to remove organic contaminants in wastewater. Due to the large surface area, unique electronic properties, abundant N functional groups, cost-effectiveness, and environmental friendliness, N-doped biochars (NBCs) are widely used as catalysts for persulfate activation. This review focuses on the NBC for oxidative degradation of organics-contaminated wastewater. Firstly, the preparation and modification methods of NBCs were reviewed. Then the catalytic performance of NBCs and modified NBCs on the oxidation degradation of organic contaminants were discussed with an emphasis on the degradation mechanism. We further summarized the detection technologies of activation mechanisms and the structures of NBCs affecting the PS activation, followed by the specific role of the N configuration of the NBC on its catalytic capacity. Finally, several challenges in the treatment of organics-contaminated wastewater by a persulfate-based advanced oxidation process were put forward and the recommendations for future research were proposed for further understanding of the advanced oxidation process activated by the NBC.

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“…Biochar is a carbon-rich material produced from biomass feedstock via a pyrolysis process under an anaerobic or anoxic condition [ 3 , 4 , 5 ]. Most of its raw materials are obtained from agricultural tailing and forestry ecosystem wastes (such as plant and animal residues) or municipal wastes (such as dewatered sludge); therefore, biochar is regarded as a product of biomass feedstock utilization [ 6 , 7 , 8 ]. With the growth of green chemistry concepts, the preparation and application of biochar have been receiving increased attention [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

“…With the growth of green chemistry concepts, the preparation and application of biochar have been receiving increased attention [ 9 ]. Song et al, reviewed the evolution of biochar research from its initial budding to its diversified development between 1999 and 2021 and showed that the study trend of biochar had increased gradually from 2014; those studies made outstanding contributions to the scientific research on energy and environment [ 6 ]. The main reason for the focus on biochar is that it presents amorphous characteristics, a large specific surface area, and good stability, characteristics that are similar to those of carbon nanotube and graphene structures.…”

Section: Introductionmentioning

confidence: 99%

“…The study of biochar on a large scale started in 2010 and moved to a reactivity exploration stage from 2014; the first works were reported in 1999 [ 6 ]. In order to better summarize the existing research results and to carry out more in-depth research on biochar, many review papers were published in the past decade [ 12 , 13 , 14 , 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

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Recent Advances of Biochar-Based Electrochemical Sensors and Biosensors

Wang

et al. 2022

Biosensors

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In the context of accelerating the global realization of carbon peaking and carbon neutralization, biochar produced from biomass feedstock via a pyrolysis process has been more and more focused on by people from various fields. Biochar is a carbon-rich material with good properties that could be used as a carrier, a catalyst, and an absorbent. Such properties have made biochar a good candidate as a base material in the fabrication of electrochemical sensors or biosensors, like carbon nanotube and graphene. However, the study of the applications of biochar in electrochemical sensing technology is just beginning; there are still many challenges to be conquered. In order to better carry out this research, we reviewed almost all of the recent papers published in the past 5 years on biochar-based electrochemical sensors and biosensors. This review is different from the previously published review papers, in which the types of biomass feedstock, the preparation methods, and the characteristics of biochar were mainly discussed. First, the role of biochar in the fabrication of electrochemical sensors and biosensors is summarized. Then, the analytes determined by means of biochar-based electrochemical sensors and biosensors are discussed. Finally, the perspectives and challenges in applying biochar in electrochemical sensors and biosensors are provided.

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Tailoring biochar for persulfate-based environmental catalysis: Impact of biomass feedstocks

Cited by 78 publications

References 241 publications

Enhancing Biochar-Based Nonradical Persulfate Activation Using Data-Driven Techniques

Enhancing Biochar-Based Nonradical Persulfate Activation Using Data-Driven Techniques

A Review on N-Doped Biochar for Oxidative Degradation of Organic Contaminants in Wastewater by Persulfate Activation

Recent Advances of Biochar-Based Electrochemical Sensors and Biosensors

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