Efficient removal of arsenic from groundwater using iron oxide nanoneedle array-decorated biochar fibers with high Fe utilization and fast adsorption kinetics

Wei, Yuanfeng; Wei, Shi; Liu, Chengbin; Chen, Tao; Tang, Yanhong; Ma, Jun; Yin, Kai; Luo, Shenglian

doi:10.1016/j.watres.2019.115107

Cited by 164 publications

(64 citation statements)

References 60 publications

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“…Research on metal anions (i.e., metalloids, mainly As and Cr) removal is continuously popular because their speciation is highly sensitive to environmental changes such as redox potential, pH, O 2 concentration (Lin et al 2019b;Wei et al 2019). It is demonstrated that the removal performances of electronegative forms of As(III, V) and Cr(V) by pristine biochar was not satisfactory.…”

Section: Heavy Metal Immobilizationmentioning

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: Heavy Metal Immobilizationmentioning

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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“…The adsorption kinetic equation can reflect the change in the adsorption capacity of the adsorbent to the solute as a function of time, i.e., the speed of the adsorption rate [25]. In this study, the more commonly used pseudo-first-order and pseudo-second-order kinetic model equations were used to fit the adsorption data.…”

Section: Adsorption Kineticsmentioning

confidence: 99%

Removal of Aquatic Cadmium Ions Using Thiourea Modified Poplar Biochar

Zhu

Liang

et al. 2020

Water

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Removal of aquatic cadmium ions using biochar is a low-cost method, but the results are usually not satisfactory. Modified biochar, which can be a low-cost and efficient material, is urgently required for Cd-polluted water and soil remediation. Herein, poplar bark (SB) and poplar sawdust (MB) were used as raw materials to prepare modified biochar, which is rich in N- and S- containing groups, i.e., TSBC-600 and TMBC-600, using a co-pyrolysis method with thiourea. The adsorption characteristics of Cd2+ in simulated wastewater were explored. The results indicated that the modification optimized the surface structure of biochar, Cd2+ adsorption process by both TSBC-600 and TMBC-600 was mainly influenced by the initial pH, biochar dosage, and contact time, sthe TSBC-600 showed a higher adsorption capacity compared to TMBC-600 under different conditions. The Langmuir adsorption isotherm model and pseudo-second-order kinetic model were more consistent with the adsorption behavior of TSBC-600 and TMBC-600 to Cd2+, the maximum adsorption capacity of TSBC-600 and TMBC-600 calculated by the Langmuir adsorption isotherm model was 19.998 mg/g and 9.631 mg/g, respectively. The modification method for introducing N and S into biochar by the co-pyrolysis of biomass and thiourea enhanced the removal rate of aquatic cadmium ions by biochar.

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“…Natural and functionalized clays have retained attention for the last decade (Barakan and Aghazadeh, 2019;Foroutan et al, 2019;Tiwari and Lee, 2012;Tuchowska et al, 2019). Iron oxide or hydroxide and other metal oxides were also used for developing simple or sophisticated sorbents consisting of their immobilization in porous organic and inorganic matrices (Chaudhry et al, 2017;Dong et al, 2019;Elwakeel and Guibal, 2015;Haron et al, 1999;Padungthon et al, 2015;Wei et al, 2019b;Yin et al, 2019;Yousif et al, 2016). The affinity of arsenic for molybdate was used for recovering the metalloid on molybdate-impregnated chitosan beads (Dambies et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

As(V) sorption from aqueous solutions using quaternized algal/polyethyleneimine composite beads

Hamza

Salih

et al. 2020

Science of The Total Environment

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Efficient removal of arsenic from groundwater using iron oxide nanoneedle array-decorated biochar fibers with high Fe utilization and fast adsorption kinetics

Cited by 164 publications

References 60 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

Removal of Aquatic Cadmium Ions Using Thiourea Modified Poplar Biochar

As(V) sorption from aqueous solutions using quaternized algal/polyethyleneimine composite beads

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