Heavy metal ions adsorption from dairy industrial wastewater using activated carbon from milk bush kernel shell

The aim of this study was to optimize the adsorption performance of activated carbon (AC), derived from the shell of Penaeus vannamei prawns, on heavy metal ions. Inexpensive, non-toxic, and renewable prawn shells were subjected to carbonization and, subsequently, KOH-activation to produce nanoporous K-Ac. Carbonized prawn shells (CPS) and nanoporous KOH-activated carbon (K-Ac) from prawn shells were prepared and characterized by FTIR, XRD, BET, SEM, and TEM. The results showed that as-produced K-Ac samples were a porous material with microporous and mesoporous structures and had a high specific surface area of 3160 m2/g, average pore size of about 10 nm, and large pore volume of 2.38 m3/g. Furthermore, batches of K-Ac samples were employed for testing the adsorption behavior of Cd2+ in solution. The effects of pH value, initial concentration, and adsorption time on Cd2+ were systematically investigated. Kinetics and isotherm model analysis of the adsorption of Cd2+ on K-Ac showed that experimental data were not only consistent with the Langmuir adsorption isotherm, but also well-described by the quasi-first-order model. Finally, the adsorption behaviors of as-prepared K-Ac were also tested in a ternary mixture of heavy metal ions Cu2+, Cr6+, and Cd2+, and the total adsorption amount of 560 mg/g was obtained.

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Preparation of activated carbon from Tunisian olive-waste cakes and its application for adsorption of heavy metal ions

Journal of Hazardous Materials ◽

10.1016/j.jhazmat.2008.06.041 ◽

2009 ◽

Vol 162 (2-3) ◽

pp. 1522-1529 ◽

Cited By ~ 248

Author(s):

R. Baccar ◽

J. Bouzid ◽

M. Feki ◽

A. Montiel

Keyword(s):

Heavy Metal ◽

Activated Carbon ◽

Metal Ions ◽

Heavy Metal Ions ◽

Olive Waste

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Competition and complexation of heavy metal ions and humic acid on zeolitic MCM-22 and activated carbon

Chemical Engineering Journal ◽

10.1016/j.cej.2007.08.005 ◽

2008 ◽

Vol 139 (3) ◽

pp. 437-444 ◽

Cited By ~ 52

Author(s):

T. Terdkiatburana ◽

Shaobin Wang ◽

M.O. Tadé

Keyword(s):

Heavy Metal ◽

Activated Carbon ◽

Humic Acid ◽

Metal Ions ◽

Heavy Metal Ions

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Porous carbon nanosheets functionalized with Fe3O4 nanoparticles for capacitive removal of heavy metal ions from water

Environmental Science Water Research & Technology ◽

10.1039/c9ew00472f ◽

2020 ◽

Vol 6 (2) ◽

pp. 331-340 ◽

Cited By ~ 4

Author(s):

Cuijiao Zhao ◽

Xinlei Wang ◽

Shengbo Zhang ◽

Na Sun ◽

Hongjian Zhou ◽

...

Keyword(s):

Heavy Metal ◽

Activated Carbon ◽

Metal Ions ◽

Porous Carbon ◽

Fe3o4 Nanoparticles ◽

Heavy Metal Ions ◽

Porous Graphitic Carbon ◽

Capacitive Deionization ◽

Efficient Removal ◽

Carbon Nanosheets

Porous graphitic carbon nanosheets functionalized by ultrafine Fe3O4 NPs and amino-functionalized activated carbon were developed to construct a hybrids capacitive deionization for efficient removal of multiple heavy metal ions in water.

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The adsorption of divalent heavy metal ions on (8,0) carbon nanotubes: The first-principles study

Modern Physics Letters B ◽

10.1142/s0217984920503686 ◽

2020 ◽

Vol 34 (32) ◽

pp. 2050368

Author(s):

Z. Zhu ◽

L. An ◽

T. Chen ◽

X. Jia

Keyword(s):

Carbon Nanotubes ◽

Heavy Metal ◽

Metal Ions ◽

First Principles ◽

Industrial Wastewater ◽

Heavy Metal Ions ◽

Density Functional ◽

Physical Adsorption ◽

Functional Theory ◽

Sensing Material

In order to explore new ways to detect and remove heavy metal ions from industrial wastewater, the first-principles method based on density functional theory has been used to investigate the performance of carbon nanotubes (CNTs) in adsorbing divalent heavy metal ions which include Zn[Formula: see text], Cu[Formula: see text], Pb[Formula: see text] and Sn[Formula: see text]. Results show that the adsorption of Zn[Formula: see text] on CNTs is weak and only physical adsorption forms between them. However, for Cu[Formula: see text], Pb[Formula: see text] and Sn[Formula: see text], the final adsorption distance with CNTs is greatly decreased, and the adsorption energy and charge transfer amount with CNTs are significantly increased. In addition, the charge density of Cu[Formula: see text], Pb[Formula: see text] and Sn[Formula: see text] overlaps effectively with that of CNTs. These indicate the formation of strong chemisorption between these ions and CNTs. Therefore, CNTs could be used as a sensing material to detect and remove Cu[Formula: see text], Pb[Formula: see text] and Sn[Formula: see text] from wastewater. The research provides theoretical guidance for the application of CNTs in heavy metal ions treatment.

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