Synthesis of magnetic biochar from bamboo biomass to activate persulfate for the removal of polycyclic aromatic hydrocarbons in marine sediments

Dong, Cheng-Di; Chen, Chiu-Wen; Dong, Cheng–Di

doi:10.1016/j.biortech.2017.08.204

Cited by 159 publications

(18 citation statements)

References 39 publications

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“…Besides, the treatment of biomass using pre-prepared magnetic particles can also be applied to produce MBC. The obtained composite maintained the excellent magnetic properties of Fe 3 O 4 particles (57 emu/g) and exhibited a well-developed rough and porous structure with abundant oxygen-containing surface functional groups (Dong et al 2017). Except Fe 3 O 4 , Li et al (2017a) noted that BiFeO 3 (BFO) was also a promising additive to produce magnetic biochar.…”

Section: Magnetic Biochar Compositesmentioning

confidence: 95%

“…It can be inferred that if BCs are produced in large scale, the accompanying pollution is unbearable. Moreover, the fabrication of several biocharbased materials involves strong acid/alkali/oxidant (e.g., H 2 SO 4 , HNO 3 , KOH and KBH 4 ) (Dong et al 2017;Wang et al 2018c), and the resultant effluent in mass production may be also a challenge or pollutant source.…”

Section: Potential Risk Of Biochar-based Materials In Wastewater Treamentioning

confidence: 99%

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Biochar-based materials and their applications in removal of organic contaminants from wastewater: state-of-the-art review

Huang

Song

Chen

et al. 2019

Biochar

272

104

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As a class of famous carbon materials, biochars (BCs) and their derivative materials with excellent physicochemical properties and diversified functionalities present great potential in wastewater treatment fields. This review focuses on the latest development in reported biochar-based materials as superior adsorbents or catalysts for removing harmful organic contaminants from wastewater. The construction and properties of biochar-based materials are briefly introduced at the beginning. As one of the major factors affecting the properties of BCs, the wide diversity of feedstocks, such as agricultural and forest residues, industrial by-products as well as municipal wastes, endows BCs different chemical compositions and structures. Woody and herbaceous BCs usually have higher carbon contents, larger surface areas and strong aromaticity, which is in favor of the organic contaminant removal. Driven by the desire of more cost-effective materials, several types of biochar-based hybrid materials, such as magnetic BC composites (MBC), nanometal/nanometallic oxides/hydroxide BC composites and layered nanomaterial-coated BCs, as well as physically/chemically activated BCs, have also been developed. With the help of foreign materials, these types of hybrid BCs have excellent capacities to remove a wide range of organic contaminants, including organic dyestuff, phenols and chemical intermediates, as well as pharmaceutically active compounds, from aquatic solutions. Depending on the different types of biochar-based materials, organic contaminants can be removed by different mechanisms, such as physical adsorption, electrostatic interaction, π-π interaction and Fenton process, as well as photocatalytic degradation. In summary, the low cost, tunable surface chemistry and excellent physical-chemical properties of BCs allow it to be a potential material in organic contaminant removal. The combination of BCs with foreign materials endows BCs more functionalities and broader development opportunities. Considering the urgent demand of practical wastewater treatment, we hope more researches will focus on the applications and commercialization of biochar-based materials.

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Section: Magnetic Biochar Compositesmentioning

confidence: 95%

Section: Potential Risk Of Biochar-based Materials In Wastewater Treamentioning

confidence: 99%

Biochar-based materials and their applications in removal of organic contaminants from wastewater: state-of-the-art review

Huang

Song

Chen

et al. 2019

Biochar

272

104

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“…Among them is the palm fatty acid used to functionalise MNPs (MNP-FA) [136] (Table 4). Also, another green method used for the reduction of PAHs in marine sediment was enhanced by using magnetic bamboo biochar [137]. Wood biochar supported by magnetite NPs (Fe 3 O 4 -WB) was found as an efficient catalyst for the removal of high-ring PAHs with the highest degradation rates for the 6-, 5-, and 4-ringed PAHs being 90, 84, and 87%, respectively [138].…”

Section: Magnetic and Magnetised Np Another New Trend Is To Couple Dmentioning

confidence: 99%

Nanoparticles Used for Extraction of Polycyclic Aromatic Hydrocarbons

Mahgoub

2019

Journal of Chemistry

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This article offers a review on the application of nanoparticles (NPs) that have been used as sorbents in the analysis of polycyclic aromatic hydrocarbons (PAHs). The novel advances in the application of carbon NPs, mesoporous silica NPs, metal, metal oxides, and magnetic and magnetised NPs in the extraction of PAHs from matrix solutions were discussed. The extraction techniques used to isolate PAHs have been highlighted including their advantages and limitations. Methods for preparing NPs and optimized conditions of NPs extraction efficiency have been overviewed since proper extraction procedures were necessary to achieve optimum analytical results. The aim was to provide an overview of current knowledge and information in order to assess the need for further exploration that can lead to an efficient and optimum analysis of PAHs.

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“…More recently, we observed that the reduction of PAHs in marine sediment by SO 4 −• -based AOPs is enhanced by using magnetic bamboo biochar [25]. Wood biochar (WB) can help limit global warming, has fewer respiratory effects, is noncarcinogenic, and has a lower environmental impact as compared to other types of biochars [15].…”

Section: Introductionmentioning

confidence: 99%

“…The conditions for the analysis of the PAHs have been described in detail previously [25]. The surface morphology of the catalyst was determined using an ESEM system equipped with an EDS attachment (Quanta 200 FEG, FEI Company, Brno-Černovice, Czech Republic).…”

Section: Instrumental Analysesmentioning

confidence: 99%

Wood-Biochar-Supported Magnetite Nanoparticles for Remediation of PAH-Contaminated Estuary Sediment

et al. 2018

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Abstract:In this study, we investigated the ability of a magnetic wood biochar (WB)-based composite catalyst (Fe 3 O 4 -WB) to catalyze sodium persulfate (PS) for the remediation of estuary sediment contaminated with polycyclic aromatic hydrocarbons (PAHs). The effects of various critical parameters, including the catalyst dose and initial pH, were investigated. The degradation of the PAHs was found to be related to the number of rings in their structure. The results showed that Fe 3 O 4 -WB is an efficient catalyst for the removal of high-ring PAHs (HPAHs), with the highest degradation rates for the 6-, 5-, and 4-ringed PAHs being 90%, 84%, and 87%, respectively, for a PS concentration of 2 × 10 −5 M, catalyst concentration of 3.33 g/L, and pH of 3.0. That the reduction rate of the HPAHs was greater than that of the low-ring PAHs can be attributed to the strong affinity of the HPAHs for biochar derived from wood biomass. Overall, this study revealed that the WB-mediated electron transfer catalysis of the surface functional groups in a wide range of pH in the Fe 3 O 4 -WB/PS system and potentially application in the remediation of sediments contaminated with PAHs.

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Synthesis of magnetic biochar from bamboo biomass to activate persulfate for the removal of polycyclic aromatic hydrocarbons in marine sediments

Cited by 159 publications

References 39 publications

Biochar-based materials and their applications in removal of organic contaminants from wastewater: state-of-the-art review

Biochar-based materials and their applications in removal of organic contaminants from wastewater: state-of-the-art review

Nanoparticles Used for Extraction of Polycyclic Aromatic Hydrocarbons

Wood-Biochar-Supported Magnetite Nanoparticles for Remediation of PAH-Contaminated Estuary Sediment

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