New nanoporous carbon materials with high adsorption capacity and rapid adsorption kinetics for removing humic acids

Han, Sang Jin; Kim, Sukjae; Lim, Hacgyu; Choi, Wonyong; Park, Hyunwoong; Yoon, Jeyong; Hyeon, Taeghwan

doi:10.1016/s1387-1811(02)00611-x

Cited by 115 publications

(75 citation statements)

References 13 publications

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“…This approach has also being used by other authors evaluating the performance of sorbent materials for humic acids. For example, Kaneco et al 5 studied the adsorption of humic and fulvic acids isolated from peat soil onto tobermorite, whereas Han et al 25 determined the adsorption capacity and kinetic of a commercial humic acid onto nanoporous carbon materials.…”

Section: Resultsmentioning

confidence: 99%

Sequential injection analysis as a tool for on-line monitoring the sorption of fulvic acid onto modified vermiculite

Abate¹,

Santos

Colombo

et al. 2006

J. Braz. Chem. Soc.

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Este trabalho apresenta um sistema de injeção seqüencial associado a uma unidade de filtração tangencial e um detector na região do ultravioleta, para monitorização em linha da sorção de ácido fúlvico em duas vermiculitas modificadas. Com o sistema proposto foi possível melhorar a resolução temporal, na investigação do tempo de equilíbrio necessário para o sistema sorventesoluto atingir o equilíbrio químico. A sorção em uma suspensão 10 g L -1 de vermiculita, modificada por intercalação com poliidroxicátions de Fe(III) foi rápida, atingindo o equilíbrio após 4 min de tempo de contato, resultando em sorção de 97,9 % do ácido fúlvico inicialmente presente em uma solução 10 mg L -1 . A sorção na suspensão 10 g L -1 de vermiculita organofílica, obtida por troca iônica com brometo de hexadeciltrimetilamônio apresentou uma rápida taxa inicial de sorção, seguida por processos de dessorção e readsorção, atingindo o equilíbrio após 30 min de tempo de contato, com sorção de 98% do ácido fúlvico inicialmente presente em uma solução 10 mg L -1 . This paper presents a sequential injection system associated with a tangential filtration unit and an ultraviolet detector for on-line monitoring of fulvic acid sorption onto two modified vermiculites. With the proposed approach it was possible to improve the temporal resolution in the investigation of the equilibrium time needed for the system sorbent-sorbate to reach the chemical equilibrium. Sorption onto a 10 g L -1 suspension of vermiculite material modified by intercalation of polyhydroxycations of Fe(III) was fast, reaching the equilibrium after 4 min of contact time, and resulting in sorption of 97.9 % of the initial 10 mg L -1 fulvic acid concentration. Sorption onto a 10 g L -1 suspension of an organic vermiculite which was modified by ion exchange with hexadecyltrimethylammonium bromide exhibited a fast initial rate of sorption, followed by desorption and re-adsorption processes, reaching the equilibrium after 30 min of contact time, with sorption of 98% of the initial 10 mg L -1 fulvic acid concentration.

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Section: Resultsmentioning

confidence: 99%

Sequential injection analysis as a tool for on-line monitoring the sorption of fulvic acid onto modified vermiculite

Abate¹,

Santos

Colombo

et al. 2006

J. Braz. Chem. Soc.

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“…For example, they have been used as supercapacitor [3][4][5], catalyst support [6][7][8] and adsorbent for hydrogen storage [9] as well as CO 2 capture [2,[10][11][12]. In particular, they are widely used as adsorbents to remove organic and heavy metal contaminants from water in water treatment and purification [13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Effect of carbonization temperature on adsorption property of ZIF-8 derived nanoporous carbon for water treatment

Abbasi

Shamsaei

Leong

et al. 2016

Microporous and Mesoporous Materials

140

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Effect of carbonization temperature on adsorption property of ZIF-8 derived nanoporous carbon for water treatment, Microporous and Mesoporous Materials (2016), doi: 10.1016/j.micromeso.2016 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractThe heat treatment effect on the adsorption capabilities of nanoporous carbon particles derived from Zeolitic Imidazolate Framework-8 (ZIF-8) was investigated at 600, 1000 and 1200 C in this study. The results showed that heat treatment at 1000 C had a significant effect on the adsorption capacity of ZIF-8 (almost 10 times) for the removal of methylene blue (MB) dye from water. Nanoporous carbons were synthesized by direct carbonization of ZIF-8. SEM and TEM images showed that the carbon resulting from ZIF-8 carbonization at various temperatures retained the original structure and morphology of ZIF-8. The carbon nanoparticles carbonized at 1000 C exhibited outstanding adsorption capacities (186.3 mg/g) compared to nanoparticles carbonized at 600 C (49.5 mg/g) and 1200 C (36.7 mg/g) as wellas ZIF-8 (19.5 mg/g) due to the change in surface charge and pore size distribution. The surface functionalities of materials were also characterized by Raman Spectroscopy, N 2 M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT2 adsorption-desorption, FTIR and TGA. The surface charge of the carbon particles changed from positive (ZIF-8) to negative as a result of conversion to carbon confirmed by zeta potential of the samples. The ZIF-8 derived carbon nanoparticles were found to be efficient adsorbents for water treatment purposes due to the satisfactory adsorption properties such as high adsorption capacity and good wettability.

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“…Macro (>50 nm), meso (2-50 nm) and micro (<2 nm) pores are all present in the highly branched internal structure of AC [46]. The main effect of this high porosity structure is to impart a high surface area to AC, up to 2500 m 2 /g [47].…”

Section: Properties Of Activated Carbon Relevant To Water Purificationmentioning

confidence: 99%

Activated Carbon, Carbon Nanotubes and Graphene: Materials and Composites for Advanced Water Purification

Sweetman

May²,

Mebberson³

et al. 2017

170

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Abstract:To ensure the availability of clean water for humans into the future, efficient and cost-effective water purification technology will be required. The rapidly decreasing quality of water and the growing global demand for this scarce resource has driven the pursuit of high-performance purification materials, particularly for application as point-of-use devices. This review will introduce the main types of natural and artificial contaminants that are present in water and the challenges associated with their effective removal. The efficiency and performance of recently developed materials for water purification, with a focus on activated carbon, carbon nanotubes and graphene will be discussed. The recent advances in water purification using these materials is reviewed and their applicability as point-of-use water purification systems discussed.

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New nanoporous carbon materials with high adsorption capacity and rapid adsorption kinetics for removing humic acids

Cited by 115 publications

References 13 publications

Sequential injection analysis as a tool for on-line monitoring the sorption of fulvic acid onto modified vermiculite

Sequential injection analysis as a tool for on-line monitoring the sorption of fulvic acid onto modified vermiculite

Effect of carbonization temperature on adsorption property of ZIF-8 derived nanoporous carbon for water treatment

Activated Carbon, Carbon Nanotubes and Graphene: Materials and Composites for Advanced Water Purification

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