One-step preparation and application of magnetic sludge-derived biochar on acid orange 7 removal via both adsorption and persulfate based oxidation

Wang, Jia; Liang, Zongxia; Ifthikar, Jerosha; Shi, Lerong; Chen, Zhuqi; Chen, Zhulei

doi:10.1039/c7ra01425b

Cited by 121 publications

(26 citation statements)

References 54 publications

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“…This may be due to the magnetic particles or magnetite (Fe3O4) deposited onto the porous structure of the biocarbon hence the reduced iodine value (159.57 mg/g) with smaller surface area (157.34 m 2 /g). This data was supported by the SEM-EDX analysis of magnetic sludge-derived biochar (MSDBC) conducted in the previous work where iron components was found distributed not only on the surface of biochar but also in the interior of MSDBC (Wang et al, 2017). Figure 1 shows the effect of initial dye concentration (10 to 100 mg/L) on MB adsorption capacity of CSB, CSAB, and MCSB.…”

Section: Adsorption Of Methylene Bluesupporting

confidence: 72%

“…In this assay, 0.025 g of biocarbon material is placed in contact with 25 ml of a MB solution at different concentrations (10,20,40,60,80, and 100 mg/L) for 24 h at room temperature. The remaining concentration after 24 h was analysed by UV-visible spectroscopy at 660 nm.…”

Section: Adsorption Of Methylene Bluementioning

confidence: 99%

“…Biocarbon derived from agricultural biomass is increasingly recognized as materials to replace AC due to high porosity, large surface area, and less expensive due to simpler production process (Mubarak et al, 2016). It is also reported that surface of the biocarbon is enriched with oxygen formed from various functional groups (Wang et al, 2017) and influences the adsorption behaviour in addition to their porous structure (Mubarak et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Application of Magnetic Coconut Shell-derived Biocarbon for Methylene Blue Removal

Abdullah¹,

Abdullah²,

Amin³

et al. 2019

Proceedings of the Proceedings of the 2nd International Conference on Advance and Scientific Innovation, ICASI 2019, 18 July, B

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This study presents the preparation of magnetic biocarbon from coconut shell. The physicochemical properties of the prepared biocarbon was initially characterized by their iodine adsorptive capacity to estimate structure porosity and surface area. The comparative study was conducted between coconut shell-derived biocarbon (CSB), coconut shell-derived activated biocarbon (CSAB), and magnetic coconut shell-derived biocarbon (MCSB) to evaluate their adsorption efficiency towards methylene blue (MB) dyes in aqueous solution. The iodine number for CSAB showed greater difference compared to the CSB and MCSB. Meanwhile, the adsorption studies indicated that MCSB had higher adsorption value (68.83 mg/g) for methylene blue dye than the other biosorbents. This was due to abundant of Fe3O4 species and oxygen containing functional groups after the biocarbon was modified. The data of MB adsorption by MCSB reflected better adsorption efficiency overall. Hence, magnetization is suggested as a better option for biocarbon modification.

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Section: Adsorption Of Methylene Bluesupporting

confidence: 72%

Section: Adsorption Of Methylene Bluementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Application of Magnetic Coconut Shell-derived Biocarbon for Methylene Blue Removal

Abdullah¹,

Abdullah²,

Amin³

et al. 2019

Proceedings of the Proceedings of the 2nd International Conference on Advance and Scientific Innovation, ICASI 2019, 18 July, B

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“…The method of "pretreatment of biomass" is pretreating the biomass with Fe 3+ /Fe 2+ or chemical coprecipitation of Fe 3+ /Fe 2+ onto biomass before the pyrolysis (Table S2) (Chaukura et al 2016). In this respect, a novel magnetic sludge-derived BC (MSDBC) was produced using FeCl 2and FeCl 3 -pretreated sludge (Wang et al 2017a). The obtained MSDBC exhibited satisfactory magnetic properties (saturation magnetization (Ms) = 8.49 emu/g) and stability with low iron leaching (< 2.14% under strong acidic condition).…”

Section: Magnetic Biochar Compositesmentioning

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

302

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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“…As mentioned in XRF analysis, the Mn component was significantly reduced after reaction, whereas the Fe components largely remain existed in the SDBC. The lower degradation efficiency in the latter stage of reaction suggests a declined PS activation efficiency, which could be attributed to the loss of Mn component and depletion of Fe 2+ species that was transformed into Fe 3+ [4,25]. Another work concludes that the transformation between Fe 2+ to Fe 3+ and Fe 3+ to Fe 2+ could slowly activate PS (Equation (5)) and would show a slow pollutant degradation stage after the quick degradation stage [26].…”

Section: Activation Mechanismmentioning

confidence: 99%

Activation of persulfate by manganese oxide-modified sludge-derived biochar to degrade Orange G in aqueous solution

Fan

Zhang

et al. 2019

Environmental Pollutants and Bioavailability

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Manganese oxide-loaded sludge-derived biochar (Mn-SDBC) was synthesized and used to activate persulfate (PS) for Orange G (OG) degradation. X-ray fluorescence and Fourier transform infrared spectroscopy analysis indicated that the manganese oxides were successfully loaded on the SDBC. The result of batch experiments suggests that OG can be efficiently degraded by PS activated by Mn-SDBC. Metal loading rate, biochar dosage and PS concentration play a crucial role in experiments, whereas pH has a minor effect on OG removal. The free radical quenching experiment was investigated to determine the predominant radical species, and the activation mechanism was also illustrated. The as-synthesized Mn-SDBC can efficiently activate PS and removal OG under a continuous flow condition in a fixed-bed column. Our study suggests that Mn-SDBC would be a promising catalyst for the remediation of dye-contaminated wastewater.

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One-step preparation and application of magnetic sludge-derived biochar on acid orange 7 removal via both adsorption and persulfate based oxidation

Abstract: Magnetic sludge-derived biochar was synthesized in one-step, and showed stable and remarkable performance in persulfate based oxidative degradation.

Cited by 121 publications

References 54 publications

Application of Magnetic Coconut Shell-derived Biocarbon for Methylene Blue Removal

Application of Magnetic Coconut Shell-derived Biocarbon for Methylene Blue Removal

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

Activation of persulfate by manganese oxide-modified sludge-derived biochar to degrade Orange G in aqueous solution

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