Synthesis and characterization of a novel MnOx-loaded biochar and its adsorption properties for Cu2+ in aqueous solution

Song, Zhengguo; Lian, Fei; Yu, Zhihong; Zhu, Lingyan; Xing, Baoshan; Qiu, Weiwen

doi:10.1016/j.cej.2013.12.061

Cited by 320 publications

(96 citation statements)

References 41 publications

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“…Hence, compared with the SD300 resin, the micropore area and volume of the SD300-M resin increased and the same results were observed with the MnO x -loaded biochar [27].…”

Section: Pore Distribution and Specific Surface Areasupporting

confidence: 86%

Selective adsorption of lead (II) ions by a manganese dioxides-loaded adsorption resin

Xiong

Lu²,

Tao

2016

Desalination and Water Treatment

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A new adsorbent SD300-M was successfully synthesized by coating the adsorption resin SD300 with manganese oxide via KMnO 4 modification. The results of X-ray photoelectron spectrometer and nitrogen adsorption measurement revealed that the manganese oxide exists as MnO 2 on the surface and inside the channel of the SD300 resin. The SD300-M resin exhibited higher adsorption capacity to Pb 2+ with the maximum adsorption capacity as high as 141 mg/g, comparing with original SD300 resin and the other manganese oxide-modified adsorbents, such as cellulose or carbon nanotubes. The increased adsorption of Pb 2+ on the SD300-M resin arose mainly from the formation of inner-sphere complexes with MnO 2 . In the presence of Ca 2+ and Mg 2+ , the SD300-M resin also has excellent adsorption selectivity for Pb 2+ relative to that of the D301-M and HMO-001 resins, which arises from electrostatic interaction and surface complexation acting together. All the results indicate that the SD300-M resin is an efficient adsorbent to remove Pb 2+ from aqueous solution.

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“…Hence, compared with the SD300 resin, the micropore area and volume of the SD300-M resin increased and the same results were observed with the MnO x -loaded biochar [27].…”

Section: Pore Distribution and Specific Surface Areasupporting

confidence: 86%

Selective adsorption of lead (II) ions by a manganese dioxides-loaded adsorption resin

Xiong

Lu²,

Tao

2016

Desalination and Water Treatment

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“…where q e (mmol g −1 ) is the adsorbed amount, S max (mmol g −1 ) is a fitting parameter for the maximum monolayer adsorption capacity which reflects the number of reactive surface adsorption sites (Song et al 2014), c is the equilibrium concentration (mmol L −1 ), and K L (L mmol −1 ) is the Langmuir adsorption constant which is a measure of the affinity (intensity) of heavy metals for the surface (Song et al 2014), or related to the binding energy of metals on absorbents (Appel and Ma 2002).…”

Section: Methodsmentioning

confidence: 99%

Contrasting effects of organic amendments on phytoextraction of heavy metals in a contaminated sediment

et al. 2015

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Background and aims Soil amendments are often added to polluted soils to increase phytoremediation efficiency.Here we investigated the potential of a range of organic amendments for phytoextraction of heavy metals in a contaminated sediment.Methods Two experiments compared adsorption and phytoextraction of heavy metals by a Cdhyperaccumulator Carpobrotus rossii grown in the contaminated sediment amended with six organic amendments. Results The adsorption capacity as measured by Langmuir adsorption maximum followed the order of Cr > Zn > Cu > Cd, and the effect of organic amendments followed the order of chicken manure > cow manure > brown coal > golden wattle biochar > blue gum biochar > radiata pine biochar. The addition of amendments increased the adsorption of heavy metals, with brown coal resulting in the lowest concentrations of water-extractable Cd, Cu and Zn. Two manures resulted in the highest concentrations of these waterextractable heavy metals in the rhizosphere soil of C. rossii. Furthermore, brown coal resulted in higher shoot accumulation of these heavy metals than three wood-derived biochars, whilst the manures generally had the lowest accumulation of Cd and Cu although they increased shoot biomass. Conclusions The addition of brown coal decreased whereas manure addition increased the mobility (water-extractable fraction) of heavy metals in rhizosphere soil. Phytoextraction of Cd and Cu was greater with brown coal than with biochars or manures. Brown coal is suitable for enhancing phytoextraction of these heavy metals because it could increase their accumulation in shoots of C. rossii and decrease the risk of leaching of these heavy metals into groundwater.

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“…Thus, biochar has used as an adsorbent to remove organic contaminants and heavy metal. In addition, biochar can be successfully utilized to disperse and stabilize nanoparticles to enhance their performance in environmental applications (Song et al, 2014;Zhou et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Biochar supported nanoscale zerovalent iron composite used as persulfate activator for removing trichloroethylene

Yan

Han

Gao

et al. 2015

Bioresource Technology

529

111

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Synthesis and characterization of a novel MnOx-loaded biochar and its adsorption properties for Cu2+ in aqueous solution

Cited by 320 publications

References 41 publications

Selective adsorption of lead (II) ions by a manganese dioxides-loaded adsorption resin

Selective adsorption of lead (II) ions by a manganese dioxides-loaded adsorption resin

Contrasting effects of organic amendments on phytoextraction of heavy metals in a contaminated sediment

Biochar supported nanoscale zerovalent iron composite used as persulfate activator for removing trichloroethylene

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