Enhancing removal of Cu(II) from aqueous solution by walnut shell-based activated carbon with pyrolusite modification

Wang, Guoqiao; He, Lihua; Wang, Meicheng; Tang, Shuxiong; Chen, Yao

doi:10.1080/03067319.2020.1814268

Cited by 5 publications

(1 citation statement)

References 41 publications

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“…The dried biomass was subjected to scanning electron microscopy (SEM) micrographs and energy-dispersive X-ray spectroscopy (EDS) analysis to identify the change of morphological properties of C6 during the removal of Cu 2+ by referring to reported methods (Xu et al, 2019). Fouriertransform infrared (FTIR) and X-ray photoelectron (XPS) detection on C6 biomass before and after reaction with Cu 2+ were also carried out by referring to the reported studies (Wang, He, et al, 2020). FTIR (Nicolet 6700; Thermo Fisher) was used to identify the functional groups involved in the reaction and their changes during the reaction.…”

Section: Analysis On the Functional Groups Involved In The Removal Of...mentioning

confidence: 99%

The capability of Bacillus pseudomycoides from soil to remove Cu(II) in water and prevent it from entering plants

Zhao

et al. 2022

Journal of Applied Microbiology

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Aims:Copper ion is widespread in wastewater and threatens the condition and human health. Micro-organisms have unique advantages to remove heavy-metal ions from water, but are rarely reported in the removal of copper ion. This aims to develop micro-organisms that can remove copper ion in water, characterize their properties and analyse their potential application in practice. Methods and Results:Sewage sludge was used as the source to isolate wild bacteria that can remove copper ion in water. The most efficient strain was screened out from 23 obtained isolates, identified as Bacillus pseudomycoides and coded as C6.The properties of C6 in the removal of copper ion in water were investigated in the aspects of reaction conditions, reaction groups, reaction dynamic and the application in oat planting. The reaction at pH 7 within 10 min yielded the highest removal rate of copper ion, 83%. The presence of lead ion in the reaction system could promote the removal rate of copper ion. Carboxyl groups and amidogen of C6 biomass were mainly involved in the removal of copper ion. The removal of copper ion was in accord with single-layer adsorption and Langmuir adsorption isotherm model. In application, C6 biomass reduced the copper content in the oat seedlings grown in copper ion containing water by more than seven times. Conclusions: B. pseudomycoides C6 can efficiently remove copper ion in water andinhibit it from entering plants. Significance and Impact of Study:This is the first time to report the capability of B. pseudomycoides to remove copper ion in water, which is also more efficient than the currently reported chemical and biological methods.

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Section: Analysis On the Functional Groups Involved In The Removal Of...mentioning

confidence: 99%