Determination of adsorptive properties of clay/water system: methylene blue sorption

Gürses, Ahmet; Karaca, Semra; Doğar, Çetin; Bayrak, Rıza; Açıkyıldız, Metin; Yalçın, Mehmet

doi:10.1016/j.jcis.2003.09.004

Cited by 251 publications

(123 citation statements)

References 22 publications

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“…It can be used to define the potential binding capacity of soil minerals with humic substances, by the formation of organo-mineral particles (Gürses et al, 2004). In brief, 0.5 g of the H 2 O 2 -treated soil was placed in a 100 mL plastic centrifuge tube (duplicate) and 50 mL aqueous MB solution (0.2 g L −1 ) was added.…”

Section: Soil Sampling and Analysesmentioning

confidence: 99%

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Soil Organic Carbon and Its Fractions Across Vegetation Types: Effects of Soil Mineral Surface Area and Microaggregates

Wang

Ouyang

2009

Pedosphere

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Soil organic carbon (SOC) can act as a sink or source of atmospheric carbon dioxide; therefore, it is important to understand the amount and composition of SOC in terrestrial ecosystems, the spatial variation in SOC, and the underlying mechanisms that stabilize SOC. In this study, density fractionation and acid hydrolysis were used to assess the spatial variation in SOC, the heavy fraction of organic carbon (HFOC), and the resistant organic carbon (ROC) in soils of the southern Hulun Buir region, northeastern China, and to identify the major factors that contribute to this variation. The results showed that as the contents of clay and silt particles (0-50 μm) increased, both methylene blue (MB) adsorption by soil minerals and microaggregate contents increased in the 0-20 and 20-40 cm soil layers (P < 0.05). Although varying with vegetation types, SOC, HFOC, and ROC contents increased significantly with the content of clay and silt particles, MB adsorption by soil minerals, and microaggregate content (P < 0.05), suggesting that soil texture, the MB adsorption by soil minerals, and microaggregate abundance might be important factors influencing the spatial heterogeneity of carbon contents in soils of the southern Hulun Buir region.

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Section: Soil Sampling and Analysesmentioning

confidence: 99%

“…The content of remaining MB in the supernatant solution was determined with an ultraviolet (UV) spectrophotometer (UNICO, UV-2102 PC) at 666 nm. Finally, the MB adsorption by soil minerals was calculated and expressed as mg g −1 (Gürses et al, 2004).…”

Section: Soil Sampling and Analysesmentioning

confidence: 99%

Soil Organic Carbon and Its Fractions Across Vegetation Types: Effects of Soil Mineral Surface Area and Microaggregates

Wang

Ouyang

2009

Pedosphere

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“…This method has been widely adopted for solids of variable nature such as iron oxides [7], clays [8], activated carbon [9,10], zeolites and silica [11]. The method has also been used to assess average pore size and pore size distribution in charcoals, silica, and alumina [12].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Tataouines Raw and Activated Clay

Hattab¹

2013

J Chem Eng Process Technol

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This study deals with the mineralogical and thermal analysis of red clay taken from the south of Tunisia (Tataouine area) which will be used in industrial and environmental fields. In that purpose the study had recourse to several quantitative and qualitative research instruments: chemical analysis, mineralogical study and thermal analysis. The analyses were carried out by different methods such as: (i) X-ray diffraction (XRD), (ii) infrared spectroscopy (IR), (iii) thermogravimetric analysis (TGA), (iv) differential thermal analysis (DTA) and (v) cation exchange capacity (CEC). The data collected from these techniques show that illite and kaolinite are the major clay phases. The accessory minerals detected in powdered rock is calcite.The raw clay has undergone an acid activation using the sulfuric acid. The acid activation of south of Tunisia clay increase the specific surface area by adsorption of methylene blue from 117 m 2 /g to 163 m 2 /g. The experimental investigation is performed in accordance with the methodology of the factorial design of experiments. The different factors or parameters used in this methodology are: the temperature (T), the contact time (t), the liquid/solid ratio (R), and the acid concentration (C). The optimal conditions, obtained by the statistically designed experiments, for the best results of methylene blue adsorption were: 60 °C, a contact time of 1.5 h, a liquid/solid ratio of 7 and acid concentration of 20%. These parameters are applied in the preparation of the sample used in characterization study. The effect of the reaction conditions on the solid structure is investigated by comparison with the raw clay sample.

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“…Traditional methods for dealing with the wastewater consist of biological, physical, and chemical processes and various combinations of these [6]. The most of the pulp and paper mills treat their effluents by using biological treatment systems.…”

Section: Introductionmentioning

confidence: 99%

Treatment of Tissue Paper Wastewater: Application of Electro-Fenton Method

Ün¹,

Topal²,

Oduncu³

et al. 2015

IJESD

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Abstract-The Fenton process is one of the most powerful advanced electrochemical processes based on the production of hydroxyl radicals (OH . ) as a result of the reaction of hydrogen peroxide (H 2 O 2 ) with catalyst ferrous ions (Fe 2+ ) under acidic conditions. In this study, tissue paper wastewater with the initial COD concentration of 1200 mg/L was treated using Electro-Fenton method. The cylindrical iron electrochemical reactor was used as a cathode. The turbine impeller with 8 flat blades were used as an anode. The effects of initial pH, current density and concentration of H 2 O 2 on COD removal efficiency were determined. The removal efficiency of 80 % were obtained after 60 minutes of electro-fenton process at the current density of 20 mA/cm 2 with the addition of 0.1M H 2 O 2. Additionally, the electrical energy consumptions were also evaluated. It can be concluded from the study that reactor designed dissimilar from those in the literature, can be used successfully for COD removal from the tissue paper industry wastewater.Index Terms-Tissue paper wastewater, electro-fenton, wastewater treatment, COD.

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Determination of adsorptive properties of clay/water system: methylene blue sorption

Cited by 251 publications

References 22 publications

Soil Organic Carbon and Its Fractions Across Vegetation Types: Effects of Soil Mineral Surface Area and Microaggregates

Soil Organic Carbon and Its Fractions Across Vegetation Types: Effects of Soil Mineral Surface Area and Microaggregates

Characterization of Tataouines Raw and Activated Clay

Treatment of Tissue Paper Wastewater: Application of Electro-Fenton Method

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