Physical and chemical characteristics of polymer-based spherical activated carbon and its ability to adsorb organics

Yeni̇soy-Karakaş, Serpil; Aygün, Ayşenur; Güneş, Mehmet; Tahtasakal, E.

doi:10.1016/j.carbon.2003.11.019

Cited by 164 publications

(74 citation statements)

References 18 publications

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“…N)/C, as well as the lower zeta potential (greater negativity) can all be the cause of the higher adsorption of heavy metals by the EFBB over the RHB. The type and concentration of surface functional groups have been reported as playing an important role in the adsorption capacities of organic adsorbents (Yenisoy-Karakas et al 2004). Although the surface area of the RHB (25.161 m 2 g -1 ) was much higher than that of the EFBB's (1.890 m 2 g -1 ), it had a lower adsorption capacity for the metals, suggesting that surface area was less important than oxygen-containing functional groups, zeta potentials, the amounts of functional groups, O/C ratios, (O ?…”

Section: Functional Groups Analysismentioning

confidence: 99%

Characterization of biochars produced from oil palm and rice husks and their adsorption capacities for heavy metals

Samsuri

Sadegh‐Zadeh

Seh-Bardan

2013

Int. J. Environ. Sci. Technol.

128

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The objectives of this study were to determine the selected physicochemical properties of two biochars, one commercially produced from rice husks and the other from oil palm empty fruit bunches, and to evaluate their adsorption capacities for Zn, Cu, and Pb using a batch equilibrium method. The results showed that there was no significant difference between the carbon content of biochars formed from empty fruit bunches (EFBB) and rice husks (RHB). However, the EFBB did present higher quantities of O, H, S, N, and K, compared to the RHB. Although the EFBB had a much lower surface area than the RHB, the former adsorbed much more Zn, Cu, and Pb than the RHB. The higher adsorption capacity of the EFBB over the RHB was a result of the EFBB having higher amounts of oxygen-containing functional groups, a higher molar ratio of O/C, and a higher polarity index [(O ? N)/C]. This suggests that the biochar's chemical properties were more important than its surface area in the adsorption of Zn, Cu, and Pb.

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Section: Functional Groups Analysismentioning

confidence: 99%

Characterization of biochars produced from oil palm and rice husks and their adsorption capacities for heavy metals

Samsuri

Sadegh‐Zadeh

Seh-Bardan

2013

Int. J. Environ. Sci. Technol.

128

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“…In addition, the adsorption process is influenced by the nature of the adsorbate and its substituent groups. The presence and concentration of surface functional groups plays an important role in the adsorption capacity and the removal mechanism of the adsorbates [5]. It is also known that acid treatment can modify the carbon physical and chemical properties, influencing their adsorption behavior [6].…”

Section: Introductionmentioning

confidence: 99%

The physical and surface chemical characteristics of activated carbons and the adsorption of methylene blue from wastewater

Wang

Zhu

Coomes

et al. 2005

Journal of Colloid and Interface Science

321

136

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“…Owing to the raising of public concern about health and related environmental effects, various technologies for phenolic wastewater treatment, such as biologic technology [2], chemical oxidation [3] and metal reduction [4] have been proposed. Among various techniques, activated carbon adsorption is extensively applied due to the extended surface area, tailored pore distribution and high degree of surface reactivity of activated carbon, and thus is most effective for removing organic compounds including surfactants, pesticides, dyes, and aromatic molecules [5,6]. However, during the process of adsorption of toxic compounds, the activated carbon usually becomes progressively saturated and inactive.…”

Section: Introductionmentioning

confidence: 99%

Application of Double-Dielectric Barrier Discharge Plasma for Removal of Pentachlorophenol from Wastewater Coupling with Activated Carbon Adsorption and Simultaneous Regeneration

Lü

Wang

et al. 2011

Plasma Chem Plasma Process

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Wastewater containing pentachlorophenol (PCP) was treated by granular activated carbon (GAC) adsorption and double-dielectric barrier discharge (D-DBD) plasma. A packed bed D-DBD reactor was applied for removal of PCP on GAC and GAC regeneration, where the discharge gap was filled with GAC. PCP degradation efficiency of 65% and GAC regeneration efficiency (RE) of 87% were achieved. Effects of discharge power, treatment time and O 2 flow rate on PCP degradation and GAC regeneration were investigated. Increasing discharge power, treatment time and O 2 flow rate were favorable for PCP degradation, and also contributed to GAC RE. C-Cl bonds in PCP were cleaved by D-DBD plasma. Effect of D-DBD plasma on physical and chemical properties of GAC during GAC regeneration process was characterized by N 2 adsorption and Boehm titration. This study is expected to demonstrate the feasibility of applying D-DBD plasma for efficient organic wastewater treatment by coupling with GAC adsorption.

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Physical and chemical characteristics of polymer-based spherical activated carbon and its ability to adsorb organics

Cited by 164 publications

References 18 publications

Characterization of biochars produced from oil palm and rice husks and their adsorption capacities for heavy metals

Characterization of biochars produced from oil palm and rice husks and their adsorption capacities for heavy metals

The physical and surface chemical characteristics of activated carbons and the adsorption of methylene blue from wastewater

Application of Double-Dielectric Barrier Discharge Plasma for Removal of Pentachlorophenol from Wastewater Coupling with Activated Carbon Adsorption and Simultaneous Regeneration

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