Carboxylmethyl konjac glucomannan conjugated polydopamine composites for Pb (II) removal

Pan-pan Chen; Hong-ping Zhang; Jianping Ding; Xiao-yan Lin; Xiong Lu; Changsheng Liu; Youhong Tang

doi:10.1016/j.carbpol.2017.01.048

Carboxylmethyl konjac glucomannan conjugated polydopamine composites for Pb (II) removal

Pan-pan Chen, Hong-ping Zhang, Jianping Ding, Xiao-yan Lin, Xiong Lu, Changsheng Liu, Youhong Tang

Research output: Contribution to journal › Article › peer-review

47 Citations (Scopus)

Abstract

Carboxylmethyl konjac glucomannan conjugated polydopamine (CMKGM-PDA) composite was successfully prepared using a cost-effective method. CMKGM-PDA exhibited excellent adsorption performance for the removal of Pb(II) and could be a convenient agent for recovery. The Langmuir linear model was suitable for describing the adsorption process of Pb(II). The maximum adsorption capacity was 95.24 mg g ⁻¹ at 298 K, showing a high absorption capacity in comparison to similar absorbents. The pseudo-second order equation and intra-particle diffusion model exhibited good correlation with the adsorption kinetic. The thermodynamic values (ΔH0 > 0, ΔS0 > 0, ΔG0 < 0) indicated that the adsorption process of Pb(II) was endothermic, feasible, and spontaneous in nature. The chelation and electrostatic attraction between Pb(II) and –OH (or –NH ₂ ) groups on the CMKGM-PDA formed a possible adsorption mechanism.

Original language	English
Pages (from-to)	62-70
Number of pages	9
Journal	Carbohydrate Polymers
Volume	162
DOIs	https://doi.org/10.1016/j.carbpol.2017.01.048
Publication status	Published - 15 Apr 2017

Keywords

Adsorption mechanism
CMKGM
Lead
Polydopamine

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10.1016/j.carbpol.2017.01.048

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title = "Carboxylmethyl konjac glucomannan conjugated polydopamine composites for Pb (II) removal",

abstract = " Carboxylmethyl konjac glucomannan conjugated polydopamine (CMKGM-PDA) composite was successfully prepared using a cost-effective method. CMKGM-PDA exhibited excellent adsorption performance for the removal of Pb(II) and could be a convenient agent for recovery. The Langmuir linear model was suitable for describing the adsorption process of Pb(II). The maximum adsorption capacity was 95.24 mg g −1 at 298 K, showing a high absorption capacity in comparison to similar absorbents. The pseudo-second order equation and intra-particle diffusion model exhibited good correlation with the adsorption kinetic. The thermodynamic values (ΔH0 > 0, ΔS0 > 0, ΔG0 < 0) indicated that the adsorption process of Pb(II) was endothermic, feasible, and spontaneous in nature. The chelation and electrostatic attraction between Pb(II) and –OH (or –NH 2 ) groups on the CMKGM-PDA formed a possible adsorption mechanism. ",

keywords = "Adsorption mechanism, CMKGM, Lead, Polydopamine",

author = "Pan-pan Chen and Hong-ping Zhang and Jianping Ding and Xiao-yan Lin and Xiong Lu and Changsheng Liu and Youhong Tang",

year = "2017",

month = apr,

day = "15",

doi = "10.1016/j.carbpol.2017.01.048",

language = "English",

volume = "162",

pages = "62--70",

journal = "Carbohydrate Polymers",

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publisher = "Elsevier Ltd",

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TY - JOUR

T1 - Carboxylmethyl konjac glucomannan conjugated polydopamine composites for Pb (II) removal

AU - Chen, Pan-pan

AU - Zhang, Hong-ping

AU - Ding, Jianping

AU - Lin, Xiao-yan

AU - Lu, Xiong

AU - Liu, Changsheng

AU - Tang, Youhong

PY - 2017/4/15

Y1 - 2017/4/15

N2 - Carboxylmethyl konjac glucomannan conjugated polydopamine (CMKGM-PDA) composite was successfully prepared using a cost-effective method. CMKGM-PDA exhibited excellent adsorption performance for the removal of Pb(II) and could be a convenient agent for recovery. The Langmuir linear model was suitable for describing the adsorption process of Pb(II). The maximum adsorption capacity was 95.24 mg g −1 at 298 K, showing a high absorption capacity in comparison to similar absorbents. The pseudo-second order equation and intra-particle diffusion model exhibited good correlation with the adsorption kinetic. The thermodynamic values (ΔH0 > 0, ΔS0 > 0, ΔG0 < 0) indicated that the adsorption process of Pb(II) was endothermic, feasible, and spontaneous in nature. The chelation and electrostatic attraction between Pb(II) and –OH (or –NH 2 ) groups on the CMKGM-PDA formed a possible adsorption mechanism.

AB - Carboxylmethyl konjac glucomannan conjugated polydopamine (CMKGM-PDA) composite was successfully prepared using a cost-effective method. CMKGM-PDA exhibited excellent adsorption performance for the removal of Pb(II) and could be a convenient agent for recovery. The Langmuir linear model was suitable for describing the adsorption process of Pb(II). The maximum adsorption capacity was 95.24 mg g −1 at 298 K, showing a high absorption capacity in comparison to similar absorbents. The pseudo-second order equation and intra-particle diffusion model exhibited good correlation with the adsorption kinetic. The thermodynamic values (ΔH0 > 0, ΔS0 > 0, ΔG0 < 0) indicated that the adsorption process of Pb(II) was endothermic, feasible, and spontaneous in nature. The chelation and electrostatic attraction between Pb(II) and –OH (or –NH 2 ) groups on the CMKGM-PDA formed a possible adsorption mechanism.

KW - Adsorption mechanism

KW - CMKGM

KW - Lead

KW - Polydopamine

UR - http://www.sciencedirect.com/science/article/pii/S0144861717300486

U2 - 10.1016/j.carbpol.2017.01.048

DO - 10.1016/j.carbpol.2017.01.048

M3 - Article

SN - 0144-8617

VL - 162

SP - 62

EP - 70

JO - Carbohydrate Polymers

JF - Carbohydrate Polymers

ER -

Carboxylmethyl konjac glucomannan conjugated polydopamine composites for Pb (II) removal

Abstract

Keywords

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