Adsorption and regeneration of leaf-based biochar for <i>p</i>-nitrophenol adsorption from aqueous solution

Ma, Hongfang; Xu, Zhaogui; Wang, Wenyu; Gao, Xiang; Ma, Hongchao

doi:10.1039/c9ra07943b

Cited by 45 publications

(19 citation statements)

References 57 publications

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“…For example, the Fe oxides NPs-supported biochar derived from leaves showed efficient removal ability for Cr(VI) and As(V) (Liang et al 2019c;Sahu et al 2019). Pristine or modified biochar derived from leaves also acted as an excellent adsorbent for organic pollutants (Hu et al 2019;Ma et al 2019;Vyavahare et al 2019). Additionally, leaves-derived biochar could serve as a promising soil conditioner to increase agricultural productivity (Konaka et al 2019).…”

Section: Biochar Productionmentioning

confidence: 99%

Visualizing the emerging trends of biochar research and applications in 2019: a scientometric analysis and review

Wang

et al. 2020

Biochar

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Biochar, derived from thermal pyrolysis of biomass, has been regarded as a low-cost, sustainable and beneficial material and widely applied in agriculture, environment and energy during the last two decades. To elucidate the research status timely and future trends in biochar field, CiteSpace is used to systematically analyze the related literature retrieved from the Web of Science core collection in 2019. Based on the keywords clustering analysis, it was found that "biochar production", "organic pollutants removal", "heavy metals immobilization", "bioremediation" were the main hotspots in research covering biochar. "Bioremediation" is an emerging topic and deserves extensive attention due to its highly effective and environmentally friendly treatment of pollutants. Improving the phytoremediation effect, immobilizing functional microorganisms on biochar, and using microorganisms as raw materials to produce biochar were the common methods of biochar-assisted bioremediation. While studies focused on "soil quality and plant growth" and "biochar and global climate change" decreased, investigations concentrated in the toxicity of biochar to soil biota and ruminants are sustainably growing. Research on direct and catalytic thermal pyrolysis of green waste (mainly microalgae) for biofuels (bio-oil, biodiesel, syngas, etc.) and biochar production is increasing. Converting municipal wastes (e.g., sewage sludge, fallen leaves) into biochar through pyrolysis was a suitable treatment for municipal waste and became a popular topic in recent time. Moreover, the biochar produced from these municipal wastes exhibited excellent performance in the removal of pollutants from wastewater and soil. This review may help to identify future directions in biochar research and applications.

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Section: Biochar Productionmentioning

confidence: 99%

Visualizing the emerging trends of biochar research and applications in 2019: a scientometric analysis and review

Wang

et al. 2020

Biochar

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“…For example, Zhang et al found a good adsorption capacity for 4-nitrophenol in the magnetite that was modified with tetraethoxysilane and vinyltriethoxysilane (Zhang et al 2019). Ma et al (2019) used biocarbon prepared from leaves of Platycladus Orientalis as absorbent for 4-nitrophenol, where a maximum adsorption capacity of 622.73 mg/g (at 298 K) was reported. Meng et al used N-isopropylacrylamide as a functional monomer, which was grafted on cyclodextrin/azobenzene to prepare a light-responsive adsorbent for 4-nitrophenol.…”

Section: Introductionmentioning

confidence: 99%

DMAEMA-grafted cellulose as an imprinted adsorbent for the selective adsorption of 4-nitrophenol

Lang

Shi

et al. 2021

Cellulose

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4-Nitrophenol is a highly toxic environmental pollutant. It is a challenge to selectively remove it from a mixture of various pollutants. Herein, we report a study on the selective adsorption of 4-nitrophenol by using molecularly imprinted polymers (MIPs). The imprinted polymer was synthesized using cellulose as a framework, onto which, the complex of the imprinting molecule (i.e., 4-nitrophenol) and a candidate material [namely, 2-(dimethylamino)ethyl methacrylate. DMAEMA] was grafted. The obtained MIP showed an excellent adsorption capacity with good selectivity. Also, the adsorption of 4-nitrophenol by the obtained MIP was fast and the adsorbent exhibited good recyclability. The thermodynamics and kinetics of the adsorption process of 4-nitrophenol by MIP was thoroughly studied, where an otherwise-equivalent non-imprinted polymer was used as a control in the experiments. The selectivity of the MIP adsorbent for 4-niteophenol was evaluated by two types of experiments: (1) adsorption experiments in single-component adsorbate systems (containing 4-nitrophenol, 3-nitrophenol, catechol, or hydroquinone), and (2) competitive adsorption experiments in binary adsorbate systems (containing 4-nitrophenol plus either 3-nitrophenol, catechol or hydroquinone). The selectivity coefficient for 4-nitrophenols was twice of those of other phenols (that were all around 2), indicative of the extent of the affinity of MIPs to these phenolic compounds. The recyclability of the adsorbent was evaluated for 5 adsorption–desorption cycles, where the adsorption capacity of the last cycle remained over 90.2% of that of the first cycle. Graphic Abstract

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“…24 In addition, a large number of studies have used ZnCl 2 as activating agent of the carbon precursor. [25][26][27] Zinc chloride activation method gives activated carbon extremely high specic surface area and pore volume.…”

Section: Introductionmentioning

confidence: 99%

High-efficiency adsorption and regeneration of methylene blue and aniline onto activated carbon from waste edible fungus residue and its possible mechanism

et al. 2020

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Adsorption and regeneration of leaf-based biochar for p-nitrophenol adsorption from aqueous solution

Abstract: As an environmentally friendly and low-cost adsorbent, biochar has great potential in wastewater treatment.

Cited by 45 publications

References 57 publications

Visualizing the emerging trends of biochar research and applications in 2019: a scientometric analysis and review

Visualizing the emerging trends of biochar research and applications in 2019: a scientometric analysis and review

DMAEMA-grafted cellulose as an imprinted adsorbent for the selective adsorption of 4-nitrophenol

High-efficiency adsorption and regeneration of methylene blue and aniline onto activated carbon from waste edible fungus residue and its possible mechanism

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