Surface Area of Activated Carbon Determined by the Iodine Adsorption Number

Mianowski, A.; Owczarek, M.; Marecka, A.

doi:10.1080/00908310500430901

Cited by 65 publications

(28 citation statements)

References 24 publications

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“…Both measurements should be regarded as indicative. Iodine adsorption can be related to (Mianowski et al 2007), although there may still be up to 20% difference in the surface calculated from their respective adsorption. Methylene blue is a cation; both pore size and charge effects may influence its adsorption.…”

Section: Methodsmentioning

confidence: 98%

Influence of natural organic matter on equilibrium adsorption of neutral and charged pharmaceuticals onto activated carbon

Ridder

Verliefde

Heijman

et al. 2011

Water Science and Technology

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Natural organic matter (NOM) can influence pharmaceutical adsorption onto granular activated carbon (GAC) by direct adsorption competition and pore blocking. However, in the literature there is limited information on which of these mechanisms is more important and how this is related to NOM and pharmaceutical properties. Adsorption batch experiments were carried out in ultrapure, waste- and surface water and fresh and NOM preloaded GAC was used. Twenty-one pharmaceuticals were selected with varying hydrophobicity and with neutral, negative or positive charge. The influence of NOM competition and pore blocking could not be separated. However, while reduction in surface area was similar for both preloaded GACs, up to 50% lower pharmaceutical removal was observed on wastewater preloaded GAC. This was attributed to higher hydrophobicity of wastewater NOM, indicating that NOM competition may influence pharmaceutical removal more than pore blocking. Preloaded GAC was negatively charged, which influenced removal of charged pharmaceuticals significantly. At a GAC dose of 6.7 mg/L, negatively charged pharmaceuticals were removed for 0-58%, while removal of positively charged pharmaceuticals was between 32-98%. Charge effects were more pronounced in ultrapure water, as it contained no ions to shield the surface charge. Solutes with higher log D could compete better with NOM, resulting in higher removal.

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Section: Methodsmentioning

confidence: 98%

Influence of natural organic matter on equilibrium adsorption of neutral and charged pharmaceuticals onto activated carbon

Ridder

Verliefde

Heijman

et al. 2011

Water Science and Technology

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“…The relationship between the iodine number and internal surface area in terms of m 2 /g of activated carbon has been well established in the literature for various precursors. The most recent studies by Mianowski et al [21], Bestani et al [22] and Noszko et al [23] have established equivalence of iodine number with BET surface area with in acceptable errors valid up to a BET surface area of 1000 m 2 /g. At surface areas higher than 1000 m 2 /g the surface areas are found to be higher than the iodine number [21].…”

Section: Product Characterizationmentioning

confidence: 97%

Activation of palm shells by phosphoric acid impregnation for high yielding activated carbon

Lim

Srinivasakannan

Balasubramanian

2010

Journal of Analytical and Applied Pyrolysis

184

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“…Results showed the dissociation constant (K d ) values decreased from 2000 mL/g under aerobic conditions to 70 mL/g under anaerobic conditions. Due to the well-documented high affinity of iodine towards activated carbon (Juhola, 1975;Mianowski et al, 2007;Yang et al, 1993), the authors concluded that iodide removal is facilitated by the oxidation of iodide to iodine by dissolved oxygen, which is subsequently adsorbed by the activated carbon. Hence, the effectiveness of activated carbon in iodide removal is dependent on dissolved oxygen concentrations (Maes et al, 2004).…”

Section: Carbonmentioning

confidence: 97%

Strategies for the removal of halides from drinking water sources, and their applicability in disinfection by-product minimisation: A critical review

Watson

Farré

Knight

2012

Journal of Environmental Management

117

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The presence of bromide (Br(-)) and iodide (I(-)) in source waters leads to the formation of brominated and iodinated disinfection by-products (DBPs), which are often more toxic than their chlorinated analogues. The increasing scarcity of water resources in Australia is leading to use of impaired and alternative water supplies with high bromide and iodide levels, which may result in the production of more brominated and iodinated DBPs. This review aims to provide a summary of research into bromide and iodide removal from drinking water sources. Bromide and iodide removal techniques have been broadly classified into three categories, namely; membrane, electrochemical and adsorptive techniques. Reverse osmosis, nanofiltration and electrodialysis membrane techniques are reviewed. The electrochemical techniques discussed are electrolysis, capacitive deionization and membrane capacitive deionization. Studies on bromide and iodide removal using adsorptive techniques including; layered double hydroxides, impregnated activated carbons, carbon aerogels, ion exchange resins, aluminium coagulation and soils are also assessed. Halide removal techniques have been compared, and areas for future research have been identified.

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Surface Area of Activated Carbon Determined by the Iodine Adsorption Number

Cited by 65 publications

References 24 publications

Influence of natural organic matter on equilibrium adsorption of neutral and charged pharmaceuticals onto activated carbon

Influence of natural organic matter on equilibrium adsorption of neutral and charged pharmaceuticals onto activated carbon

Activation of palm shells by phosphoric acid impregnation for high yielding activated carbon

Strategies for the removal of halides from drinking water sources, and their applicability in disinfection by-product minimisation: A critical review

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