Efficient removal of Pb(II) ions from accidental polluted waters by adsorption onto thermal activated lignin

Nacu, Gabriela; Negrilă, Lăcrămioara; Roșca, Mihaela; Smaranda, Camelia; Bulgariu, Laura

doi:10.1109/ehb.2015.7391489

Cited by 4 publications

(3 citation statements)

References 11 publications

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“…Lignocellulosic biomasses are pyrolyzed at high temperature for preparation of activated charcoal as stated earlier. This type of modification enhances specific surface area and pore characteristics of biomasses and could be beneficial to improve pollutants removal capabilities of biomasses . However, charcoal preparation process is energy‐intensive in nature.…”

Section: Fluoride Removal By Nonliving Biomassmentioning

confidence: 99%

Biomass for water defluoridation and current understanding on biosorption mechanisms: A review

Manna

Roy

Adhikari

et al. 2018

Env Prog and Sustain Energy

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Excessive fluoride (above 1.5 mg/L) containing water consumption for prolonged periods could pose health hazards, for example, dental fluorosis. Longer exposure could also cause skeletal fluorosis leading to the permanent deformity to skeleton. In the current context, use of biomasses for defluoridation would be a most economic and sustainable option for water defluoridation over the available alternatives. This article presents a brief summary of processes used biomasses for fluoride removal from aqueous solutions. This article also discusses the theoretical and instrumental approaches used by the researchers till date to understand the defluoridation mechanisms. The literature survey pointed that theoretical models such as Langmuir and Freundlich isotherms, pseudo‐first‐order and second‐order kinetic models, and different thermodynamic equations were also used to define the defluoridation by biomasses. Apart from the theoretical modeling, several researchers have also tried to understand the biomass‐based defluoridation by applying advanced instruments, for example, FTIR, XPS, NMR, TG, FESEM, and Raman spectroscopic analysis. © 2018 American Institute of Chemical Engineers Environ Prog, 37: 1560–1572, 2018

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Section: Fluoride Removal By Nonliving Biomassmentioning

confidence: 99%

Biomass for water defluoridation and current understanding on biosorption mechanisms: A review

Manna

Roy

Adhikari

et al. 2018

Env Prog and Sustain Energy

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“…It was observed from the figure that the number of bands decreases and that there are also shifts in the positions of the bands remaining after activation (Gao et al, 2013). The hydroxyl group is still present in activated carbon but a reduction is observed in comparison to demineralised kraft lignin (Fu et al, 2013;Nacu et al, 2015). CeH stretching vibrations decreased after activation as did the intensity of the aromatic ring mode which was observed at 1559 cm À1 .…”

Section: Resultsmentioning

confidence: 92%

“…CeH stretching vibrations decreased after activation as did the intensity of the aromatic ring mode which was observed at 1559 cm À1 . Moreover, it seems appearance of bands at 1120e1560 cm À1 are due to ether groups (Nacu et al, 2015) formed from decomposition of other groups bands present in the demineralised kraft lignin.…”

Section: Resultsmentioning

confidence: 99%

An innovative approach to develop microporous activated carbons in oxidising atmosphere

Suhas

Carrott

et al. 2017

Journal of Cleaner Production

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The aim of the study was to investigate a rather oxidising atmosphere such as air for the development of a microporous activated carbon from demineralised kraft lignin. Demineralisation of lignin makes the precursor low in reactivity and hence can allow the use of more oxidising atmospheres. Control of the activation conditions allowed development of microporous activated carbons with type I N 2 adsorption isotherms from demineralised kraft lignin having micropore volumes and mean micropore widths up to 0.374 cm 3 g À1 and 1.12 nm, respectively. A unique feature of this study is to prepare high surface area (1305 m 2 g À1 ) microporous activated carbon at a high temperature (950 C) in air atmosphere. The effect of temperature on the surface area, micropore volume, mean micropore width and total pore volume was also studied for the development of activated carbons from the precursor in the range 550e1050 C.

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Scaling-Up Strategies of Heavy Metals Microbial Bioremediation

Roșca

Hlihor

Cozma

et al. 2021

2021 International Conference on E-Health and Bioengineering (EHB)

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Efficient removal of Pb(II) ions from accidental polluted waters by adsorption onto thermal activated lignin

Cited by 4 publications

References 11 publications

Biomass for water defluoridation and current understanding on biosorption mechanisms: A review

Biomass for water defluoridation and current understanding on biosorption mechanisms: A review

An innovative approach to develop microporous activated carbons in oxidising atmosphere

Scaling-Up Strategies of Heavy Metals Microbial Bioremediation

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