A novel, efficient and sustainable magnetic sludge biochar modified by graphene oxide for environmental concentration imidacloprid removal

Ma, Yongfei; Wu, Li; Li, Ping; Yang, Lie; He, Liuyang; Chen, Siyu; Yang, Yuyi; Gao, Feng; Qi, Xuebin; Zhang, Zulin

doi:10.1016/j.jhazmat.2020.124777

Cited by 80 publications

(23 citation statements)

References 53 publications

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“…The adsorption amount of IMI increased with increasing Na + concentrations; however, the presence of increasing concentrations of Ca 2+ obtained the opposite result. A similar phenomenon was observed in a previous study by Frontiers in Environmental Science frontiersin.org Ma et al (2021). The increase in Na + and Ca 2+ concentrations can also improve the activity coefficient of organic compounds and reduce their solubility through the salting-out effect and then promote IMI adsorption to these Gt and Gt-DBC samples (Bai et al, 2017).…”

Section: Ionic Species and Strengthsupporting

confidence: 84%

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Effects of dissolved black carbon bound with goethite on physicochemical properties and adsorption capacity for imidacloprid: Adsorption versus coprecipitation

Zhang

Ma²,

Meng³

et al. 2022

Front. Environ. Sci.

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Dissolved black carbon (DBC) is an important component of natural dissolved organic matter and can bind to iron minerals to form DBC-mineral complexes by adsorption and coprecipitation. However, reports regarding the difference in physicochemical properties between adsorbed and coprecipitated DBC-mineral complexes and their sorption capacity for polar organic pollutants are limited. Herein, goethite (Gt) and the adsorbed and coprecipitated complexes of DBC with Gt (SGt-DBC and CGt-DBC) were prepared, and their physicochemical properties and adsorption capacity for polar imidacloprid (IMI) were determined. The results showed that DBC could efficiently bind to Gt by coprecipitation or adsorption, leading to the aggregation of Gt particles, decreasing SSA, and increasing microporous volume, O-containing functional groups and negative charges. A greater effect was observed in CGt-DBC samples than SGt-DBC samples. CGt-DBC samples could more efficiently adsorb IMI than SGt-DBC samples, and CGt-DBC samples obtained the greatest Qmax with 68.4 mg/kg. The sorption mechanisms mainly involved hydrophobic partitioning, H-bonding, cation-π and p/π-π electron donor-acceptor interactions and electrostatic interactions. Additionally, the greater solution pH and Na+ concentration facilitated IMI adsorption on Gt and Gt-DBC samples; however, the Ca2+ solution obtained the opposite result. This effect on IMI adsorption was more pronounced for CGt-DBC samples. Therefore, the findings of this study provide a deep understanding of the interactions between Gt and DBC by adsorption and coprecipitation and their effect on the sorption of organic pollutants in natural soil and water environments.

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Section: Ionic Species and Strengthsupporting

confidence: 84%

“…According to Sanganyado et al (2017), this was mainly controlled by the porous internal diffusion of the adsorbents. This phenomenon was also observed in the adsorption of IMI on nanotube composites (Ma et al, 2021), in which more than 80% of IMI adsorbed in the rapid adsorption stage.…”

Section: Adsorption Kinetics Of Imidaclopridsupporting

confidence: 54%

Effects of dissolved black carbon bound with goethite on physicochemical properties and adsorption capacity for imidacloprid: Adsorption versus coprecipitation

Zhang

Ma²,

Meng³

et al. 2022

Front. Environ. Sci.

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“…In contrast with SBC, CNT-SBC showed a higher S BET (49.3-119 m 2 /g), V mes (0.219-0.807 cm 3 /g), V tot (0.230-0.836 cm 3 /g), and D p (18.6-28.0 nm) with an increment of CNT fraction in the composite. Unique graphene oxide-based magnetic sludge biochar composite (GO/CoFe 2 O 4 -SBC) was synthesized for the first time and evaluated for the elimination of imidacloprid at environmental concentration level (Ma et al 2021b). GO/CoFe 2 O 4 -SBC had a maximum adsorption capacity of 8.64 mg/g for imidacloprid.…”

Section: Biochar-based Compositesmentioning

confidence: 99%

Biochar for the removal of contaminants from soil and water: a review

Qiu

Liu

Ling

et al. 2022

Biochar

377

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Biochar shows significant potential to serve as a globally applicable material to remediate water and soil owing to the extensive availability of feedstocks and conducive physio-chemical surface characteristics. This review aims to highlight biochar production technologies, characteristics of biochar, and the latest advancements in immobilizing and eliminating heavy metal ions and organic pollutants in soil and water. Pyrolysis temperature, heat transfer rate, residence time, and type of feedstock are critical influential parameters. Biochar’s efficacy in managing contaminants relies on the pore size distribution, surface groups, and ion-exchange capacity. The molecular composition and physical architecture of biochar may be crucial when practically applied to water and soil. In general, biochar produced at relatively high pyrolysis temperatures can effectively manage organic pollutants via increasing surface area, hydrophobicity and microporosity. Biochar generated at lower temperatures is deemed to be more suitable for removing polar organic and inorganic pollutants through oxygen-containing functional groups, precipitation and electrostatic attraction. This review also presents the existing obstacles and future research direction related to biochar-based materials in immobilizing organic contaminants and heavy metal ions in effluents and soil. Graphical Abstract

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“…4 ). This is a common observation for biochar systems and often explained by the competition of dissolved ions with ionic pollutants for adsorption sites ( Chen et al, 2015 ; Huang et al, 2017 ; Inyang et al, 2015 ; Jia et al, 2013 ; Ma et al, 2021 ). However, other studies reported either minimal influence of the ionic strength for tetracycline ( Xu et al, 2020 ) or even higher sorption of micropollutants in the greater presence of Na + ions ( Xie et al, 2014 ).…”

Section: Resultsmentioning

confidence: 92%

Valorisation of agricultural waste derived biochars in aquaculture to remove organic micropollutants from water – experimental study and molecular dynamics simulations

Mrozik

Minofar

Thongsamer

et al. 2021

Journal of Environmental Management

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In this work, we evaluated the valorisation of agricultural waste materials by transforming coconut husks and shells, corncobs and rice straw into biochar for water treatment in aquaculture. We compared the biochars’ suitability for removal of organic micropollutants (acetaminophen, oxytetracycline, tetracycline, enrofloxacin, atrazine, diuron and diclofenac) from surface water needed for aquaculture. The biochars were prepared by three methods ranging from inexpensive drum kilns (200 °C) to pyrolysis with biogasfication (350–750 °C). Overall, antibiotics tetracycline and enrofloxacin were the most strongly sorbed micropollutants, and coconut husk biochar prepared at 750 °C was the best sorbent material. Molecular Dynamics simulations indicated that the major sorption mechanism is via π-π stacking interactions and there is a possibility of multilayer sorption for some of the micropollutants. We observed, a strong impact of ionic strength (salinity), which is an important consideration in coastal aquaculture applications. High salinity decreased the sorption for antibiotics oxytetracycline, tetracycline and enrofloxacin but increased diclofenac, atrazine and diuron sorption. We considered coconut husk biochar produced in drum kilns the most practical option for biochar applications in small-scale coastal aquacultures in South Asia. Pilot trials of canal water filtration at an aquaculture farm revealed that micropollutant sorption by coconut husk biochar under real-world conditions might be 10–500 times less than observed in the laboratory studies. Even so, biochar amendment of sand enhanced the micropollutant retention, which may facilitate subsequent biodegradation and improve the quality of brackish surface water used for food production in coastal aquaculture.

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A novel, efficient and sustainable magnetic sludge biochar modified by graphene oxide for environmental concentration imidacloprid removal

Cited by 80 publications

References 53 publications

Effects of dissolved black carbon bound with goethite on physicochemical properties and adsorption capacity for imidacloprid: Adsorption versus coprecipitation

Effects of dissolved black carbon bound with goethite on physicochemical properties and adsorption capacity for imidacloprid: Adsorption versus coprecipitation

Biochar for the removal of contaminants from soil and water: a review

Valorisation of agricultural waste derived biochars in aquaculture to remove organic micropollutants from water – experimental study and molecular dynamics simulations

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