A high-flux and anti-interference dual-functional membrane for effective removal of Pb(II) from natural water

Zhang, Yanhong; Feng, Yuefeng; Xiang, Qi; Liu, Fuqiang; Ling, Chen; Wang, Fenghe; Li, Yan; Li, Aimin

doi:10.1016/j.jhazmat.2019.121492

Cited by 33 publications

(2 citation statements)

References 52 publications

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“…Therefore, the disposal of Pb-containing industrial wastewater into drains or sewage systems is strictly regulated to reduce its environmental impacts. Several methods have been carried out to reduce levels of Pb in wastewater including extraction [5], ion exchange [6], membrane filtration [7,8] and electrodialysis [9]. However, most of these methods have significant disadvantages such as relatively high costs and low eligibility to be used in small scale industries.…”

Section: Introductionmentioning

confidence: 99%

Development of Biosorbent Derived from the Endocarp Waste of Gayo Coffee for Lead Removal in Liquid Wastewater—Effects of Chemical Activators

et al. 2021

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This study reports the development of bio-based adsorbent by utilizing coffee endocarp (CE) waste as a raw material for lead (Pb) removal from liquid wastewater. The effect of NaOH and HCl as activation precursors on the characteristics and performance of the resulting adsorbents was investigated. The prepared adsorbents were characterized using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), X-ray fluorescence (XRF) and Surface Area Analyzer (SAA). The characterization results confirm the positive role of the activation by either NaOH or HCl in enhancing the surface properties of the resulting adsorbents. The chemical activations removed most of impurities leading to smoother surface, pore size enlargement and enhanced surface area to pore volume ratio, which result in an enhanced adsorption capacity and Pb removal efficiency. The raw adsorbent shows 57.7% of Pb removal efficiency and sorption capacity of 174.4 mg/g. On the other hand, after the chemical treatment using HCl and NaOH, the Pb removal efficiencies increased up to 63.9% and 89.86%, with adsorption capacity of 193 and 271.58 mg/g, respectively. Though both activated sorbents demonstrate better adsorption performance compared to the non-activated CE, overall results reveal that the NaOH-activated sorbent offers better characteristic and performance than the HCl-activated sorbent.

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Section: Introductionmentioning

confidence: 99%

Development of Biosorbent Derived from the Endocarp Waste of Gayo Coffee for Lead Removal in Liquid Wastewater—Effects of Chemical Activators

et al. 2021

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“…Therefore, the research on the method of efficient removal of Pb( ii ) is of great significance to both humans and the environment. Many methods have been reported to remove Pb( ii ) from water, including membrane filtration, 1,2 chemical precipitation, 3,4 adsorption, 5 electrochemical methods 6 and ion exchange. 7 Among these methods, adsorption is a popular method with the advantages of convenient operation, satisfactory efficiency, high selectivity and wide adaptability.…”

Section: Introductionmentioning

confidence: 99%