Removal of Pb(II) ions from aqueous solutions by litchi pericarp and its leachate

Pan, Yimin; Jiang, Ruixue; Yang, Jiang-Yan; Zheng, Hao; Yin, Erqin

doi:10.1007/s11771-016-3217-7

Cited by 3 publications

(1 citation statement)

References 31 publications

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“…Adsorption kinetics offers insights into adsorption process and reveals the practical applicability of adsorbents. In addition, the kinetics describes the contaminant uptake rate and further, decides residence time of the heavy metals at the solid/solution interface [34]. According to the research of Jiang et al [31], the pseudo-first-order and pseudo-second-order kinetic models were employed to study the kinetics of Pb(II) adsorption onto BC and ABC satisfactorily.…”

Section: Adsorption Kineticsmentioning

confidence: 99%

Pb(II) removal from aqueous solution by cold KOH activated biochar of camphor leaves: isotherms, kinetics and thermodynamics

Cui¹,

Wang²,

Zhang³

2019

Desalination and Water Treatment

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a b s t r a c tBiochar from camphor leaves was activated by low-cost cold KOH process (ABC) to improve Pb(II) removal from aqueous solution. Then ABC was characterized by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy and N 2 adsorption-desorption to reveal the benefits of cold KOH activation. The high adsorption capacity of ABC mainly results from oxygen-containing groups, porous structure and large surface area. Effect of factors including dose of ABC, pH, ionic strength, adsorption time, and temperature on Pb(II) adsorption was investigated by monofactor experiments. Through comparison with biochar (BC), optimization of ABC adsorption was revealed by kinetics, isotherms and thermodynamics. Pb(II) adsorption onto ABC is well described by pseudo-second-order kinetics and Langmuir isotherm, implying that chemisorption and monolayer adsorption are the rate-limiting steps. The thermodynamics indicates that Pb(II) adsorption onto ABC is spontaneous and exothermic. After cold KOH activation, the maximum adsorption capacity of Pb(II) onto ABC is 90.09 mg g -1 , higher than 62.27 mg g -1 of BC. ABC has an excellent dynamic and thermodynamic performance comparing with BC.

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Section: Adsorption Kineticsmentioning

confidence: 99%

Pb(II) removal from aqueous solution by cold KOH activated biochar of camphor leaves: isotherms, kinetics and thermodynamics

Cui¹,

Wang²,

Zhang³

2019

Desalination and Water Treatment

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Low Cost Absorbents, Techniques, and Heavy Metal Removal Efficiency

Sharma

Sofi

Wani

2018

Biostimulation Remediation Technologies for Groundwater Contaminants

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Heavy metal contamination in water is a serious concern to the environment and human health. High concentrations of heavy metals in the environment can be toxic to a variety of living species. Natural bio-absorbents are abundant and inexpensive and considered a waste if not managed properly. The role of bio-absorbents has been widely studied and has been utilized for the removal of heavy metals. The objective of the chapter is to search the database for different absorbents and their efficiency for the removal of heavy metals. Key words related to the study have been used to select different papers published by the researchers all over the world. A rigorous three-tier process has been utilized by the authors to select the papers from the database for the current study. This chapter has identified a few research gaps in the field of heavy metal removal by using different low cast absorbents that need to be taken into account in future research.

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Sorption studies on removal of Cd2+ from the aqueous solution using fruit-peels of Litchi chinensis Sonn.

Rauf¹,

Mahmud²,

Ashraf³

et al. 2020

Desalination and Water Treatment

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Removal of Pb(II) ions from aqueous solutions by litchi pericarp and its leachate

Cited by 3 publications

References 31 publications

Pb(II) removal from aqueous solution by cold KOH activated biochar of camphor leaves: isotherms, kinetics and thermodynamics

Pb(II) removal from aqueous solution by cold KOH activated biochar of camphor leaves: isotherms, kinetics and thermodynamics

Low Cost Absorbents, Techniques, and Heavy Metal Removal Efficiency

Sorption studies on removal of Cd2+ from the aqueous solution using fruit-peels of Litchi chinensis Sonn.

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