Efficient arsenate removal by magnetite-modified water hyacinth biochar

Zhang, Feng; Wang, Xin; Ji, Xiaolin; Ma, Lijuan

doi:10.1016/j.envpol.2016.06.013

Cited by 187 publications

(51 citation statements)

References 60 publications

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“…As(V) adsorption capacity of a novel material Fe‐5A is relatively high (14.89 ± 1.03 mg g −1 ) in comparison with other adsorbents described in the literature, including a critical review of adsorbents for arsenic removal . Some of the materials mentioned are pure alumina (13.64 mg g −1 ), activated alumina (9.20–24 mg g −1 ), activated carbon (3.08–30.48 mg g −1 ), bauxsol (1.081 mg g −1 ), activated bauxsol (7.642 mg g −1 ), gibbsite (4.60 mg g −1 ), goethite (12.5 mg g −1 ), kaolinite (<0.23 mg g −1 ), kaolinites intercalated with triethanolamine methylammonium iodide (6.4–10.12 mg g −1 ), granular ferric hydroxide (2.3–8.5 mg g −1 ), Fe‐sericite beads (5.87 mg g −1 ), drinking water treatment solids (DWTS; 0.017–0.21 mg g −1 ), layered double hydroxides (LDH; 24–195 mg g −1 ), manganese oxide‐modified biochar (1 mg g −1 ), magnetite‐modified biochar (7.52 mg g −1 ) and FeOOH‐modified montmorillonite clay (14.24 ± 0.80 mg g −1 ) …”

Section: Introductionmentioning

confidence: 99%

FeOOH and Mn₈O₁₀Cl₃ modified zeolites for As(V) removal in aqueous medium

Krauklis

Ozola

Burlakovs

et al. 2017

J of Chemical Tech & Biotech

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BACKGROUND Arsenic in drinking water poses serious potential health risks in more than 30 countries with total affected population of around 100 million people. The present study is devoted to the development of innovative sorbents based on zeolite materials for As(V) sorption by modifying raw materials with iron oxyhydroxide and manganese oxychloride. Natural clinoptilolite and synthetic zeolite A were modified in order to obtain improved sorption of As(V). Sorption properties of newly developed sorbents were studied. Zeolites containing natural clinoptilolite are chosen due to relatively low cost and their broad use in industrial production as well as characteristic large surface area. RESULTS Results obtained indicate that modification of zeolites with FeOOH and Mn8O10Cl3 significantly improves the As(V) sorption capacity of newly developed materials. As(V) sorption on FeOOH‐modified aluminosilicates follows the Langmuir model, while on unmodified aluminosilicates it is described by the Freundlich model. As(V) sorption kinetics on both modified and unmodified materials most precisely can be described by Lagergren's pseudo‐second‐order kinetic model. Elevated As(V) concentration on the surface of Mn8O10Cl3 crystals and amorphous FeOOH indicates these compounds as responsible for sorption increase. CONCLUSION Developed sorbents show improved performance in comparison with their unmodified counterparts, with a dramatic increase in As(V) sorption capacity up to 99.3 times in the case of FeOOH‐modified calcium zeolite A. These materials have great potential for As(V) removal in aqueous medium. © 2017 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

FeOOH and Mn₈O₁₀Cl₃ modified zeolites for As(V) removal in aqueous medium

Krauklis

Ozola

Burlakovs

et al. 2017

J of Chemical Tech & Biotech

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“…Nitrate salts of heavy metal ions were dissolved and diluted to prepare heavy metal ion stock solutions (1 g L −1 ). Water hyacinth, one of the most aggressive invasive species of aquatic plants worldwide 51 , was selected as the feedstock for BC and collected from Yiyang River, Yangzhou, China.…”

Section: Methodsmentioning

confidence: 99%

Enhanced removal of heavy metal ions from aqueous solution using manganese dioxide-loaded biochar: Behavior and mechanism

Zhang

Xue

et al. 2020

Sci Rep

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In this study, a redox precipitation method was used to load manganese dioxide (MnO 2 ) nanoparticles on biochar (BC) (BC@MnO 2 ) pyrolyzed from the invasive water hyacinth, and the adsorption of Cd(II),Cu(II), Zn(II), and Pb(II) was investigated. Several techniques were used to characterize the adsorbents. The results revealed that the BC surface was covered by many intertwined thin amorphous MnO 2 nanosheets, which significantly increased its specific surface area and pore volume. The adsorption of heavy metal ions by BC was negligible, whereas the MnO 2 -containing adsorbents exhibited a high capacity for adsorbing heavy metal ions. However, the MnO 2 -normalized adsorption amount decreased with increasing MnO 2 load and was largely unchanged at MnO 2 loads of 26.6% to 30.2%. The capacity for adsorbing heavy metal ions of BC@MnO 2 was pH-dependent, but the adsorption affinity was unaffected by coexisting ions. Column tests revealed that BC@MnO 2 with a load of 26.6% had a high capacity for removing heavy metal ions from simulated and real electroplating wastewater. Therefore, BC@MnO 2 with a load of 26.6% shows promise as a regenerable adsorbent for removing heavy metal ions from water/wastewater. This study could lay an essential foundation to develop a win-win strategy for heavy metal ions removal from wastewater using biochar derived from water hyacinth. open Scientific RepoRtS | (2020) 10:6067 | https://doi.org/10.1038/s41598-020-63000-z www.nature.com/scientificreports www.nature.com/scientificreports/ dispersibility and adsorption. Nanosized MnO 2 loaded on materials with a high specific surface area-such as graphene oxide 11 , ordered mesoporous silica 15 , and ordered mesoporous carbon materials 16 exhibited higher performance in energy storage, catalysis, and adsorption than aggregated nanosized MnO 2 . However, materials with large specific surface areas are costly and difficult to manufacture, which restricts their large-scale preparation and application. Hence, the loading of nanosized MnO 2 onto low-cost supporting materials with large specific surface areas shows promise.Biochar (BC) is produced via pyrolysis of organic feedstocks at <700 °C under oxygen-limited conditions. Unfortunately, blank BC often exhibits relatively low adsorption efficiency for heavy metal ions 4,17 . However, due to its abundant surface functional groups, availability, and low cost, BC is suitable for hosting metal oxides for adsorption and catalysis applications 7 . For example, metal hydroxides such as Fe-Mn binary oxides 18 , iron oxides 19,20 , aluminum oxides 21,22 , and silicon 23 have been introduced to the inner and outer surfaces of BC. Sun et al. 24 , Qiu et al. 25 , and Li et al. 26 studied the application of MnO 2 -loaded BC for removing Pb(II), Cd(II), and fluoroquinolone antibiotics, respectively. Prior studies have focused on the preparation and adsorption performance of MnO 2 -loaded BC. However, the means of enhancing MnO 2 loading and reactions among BC, MnO 2 , and target contaminants have been overlo...

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“…The most commonly used modification methods were Fe/Mn oxides and nanoscale zero-valent iron supported biochars for As removal. The mechanisms for higher As removal capacities by modified biochar included more adsorption sites for arsenic(V) removal, ligand exchange between As(V) anion, the hydroxylated surface, and H bond (Wang et al 2016(Wang et al , 2017dYoon et al 2017;Zhang et al 2016a;Zhou et al 2017c). Similarly, the most popular modification methods were Fe/Mn oxides and nanoscale zero-valent iron-supported biochars for Cr(VI) removal (Dong et al 2017;Duan et al 2017;Qian et al 2017;Su et al 2016;Wang et al 2017a).…”

Section: Heavy Metals' Immobilizationmentioning

confidence: 99%

A scientometric review of biochar research in the past 20 years (1998–2018)

Ata-Ul-Karim

Singh

et al. 2019

Biochar

176

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Biochar is the carbon-rich product obtained from the thermochemical conversion of biomass under oxygen-limited conditions. Biochar has attained extensive attention due to its agronomical and environmental benefits in agro-ecosystems. This work adopts the scientometric analysis method to assess the development trends of biochar research based on the literature data retrieved from the Web of Science over the period of 1998-2018. By analysing the basic characteristics of 6934 publications, we found that the number of publications grew rapidly since 2010. Based on a keyword analysis, it is concluded that scholars have had a fundamental recognition of biochar and preliminarily found that biochar application had agronomic and environmental benefits during the period of 1998-2010. The clustering results of keywords in documents published during 2011-2015 showed that the main research hotspots were "biochar production", "biochar and global climate change", "soil quality and plant growth", "organic pollutants removal", and "heavy metals immobilization". While in 2016-2018, beside these five main research hotspots, "biochar and composting" topic had also received greater attention, indicating that biochar utilization in organic solid waste composting is the current research hotspot. Moreover, updated reactors (e.g., microwave reactor, fixed-bed reactor, screw-feeding reactor, bubbling fluidized bed reactor, etc.) or technologies (e.g., solar pyrolysis, Thermo-Catalytic Reforming process, liquefaction technology, etc.) applied for efficient energy production and modified biochar for environmental remediation have been extensively studied recently. The findings may help the new researchers to seize the research frontier in the biochar field.

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Efficient arsenate removal by magnetite-modified water hyacinth biochar

Cited by 187 publications

References 60 publications

FeOOH and Mn₈O₁₀Cl₃ modified zeolites for As(V) removal in aqueous medium

FeOOH and Mn₈O₁₀Cl₃ modified zeolites for As(V) removal in aqueous medium

Enhanced removal of heavy metal ions from aqueous solution using manganese dioxide-loaded biochar: Behavior and mechanism

A scientometric review of biochar research in the past 20 years (1998–2018)

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Efficient arsenate removal by magnetite-modified water hyacinth biochar

Cited by 187 publications

References 60 publications

FeOOH and Mn8O10Cl3 modified zeolites for As(V) removal in aqueous medium

FeOOH and Mn8O10Cl3 modified zeolites for As(V) removal in aqueous medium

Enhanced removal of heavy metal ions from aqueous solution using manganese dioxide-loaded biochar: Behavior and mechanism

A scientometric review of biochar research in the past 20 years (1998–2018)

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Product

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FeOOH and Mn₈O₁₀Cl₃ modified zeolites for As(V) removal in aqueous medium

FeOOH and Mn₈O₁₀Cl₃ modified zeolites for As(V) removal in aqueous medium