Preparation, modification, and characterization of pitches from apricot stones

Genceli, E. Atesş; Apak, E.; Razvigorova, M.; Petrov, N.; Minkova, V.; Eki̇nci̇, Ekrem

doi:10.1016/s0378-3820(01)00259-4

Cited by 12 publications

(6 citation statements)

References 13 publications

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“…However, there have been a considerable number of worldwide studies during the past decade on the production of activated carbon from these wastes [7][8][9][10][11][12][18][19][20][21][22]. The objective of this work was to investigate the possibility of preparing activated carbon from domestic agricultural wastes by chemical activation.…”

Section: Introductionmentioning

confidence: 99%

Agricultural Waste Conversion to Activated Carbon by Chemical Activation with Phosphoric Acid

2007

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Activated carbon is widely used in various processes as an inexpensive and effective adsorbent. The adsorption properties of activated carbon vary with the feed materials used and the method of activation. The use of an inexpensive material and performing a suitable production method may help to generate a low cost product. Agricultural wastes could be considered as suitable raw materials for the production of activated carbon. In this work, activated carbon was produced by chemical activation with phosphoric acid of agricultural wastes such as bagasse, hard shells of apricot stones, almond, walnut and hazelnut shells. The effects of various preparation variables on both yield and quality of the prepared carbon were studied. The results showed that the selection of final activation temperature, heating rate, activation time and impregnation rate of the chemical agent was important in determining the quality of activated carbon obtained. The surface area and ash content of the activated carbon produced were compared to those of imported commercial samples. According to the results obtained, activated carbon from the hard shells of apricot stones have the best adsorption properties and the highest surface area. This activated carbon could be used in the separation of metal ions from wastewaters.

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Section: Introductionmentioning

confidence: 99%

Agricultural Waste Conversion to Activated Carbon by Chemical Activation with Phosphoric Acid

2007

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“…For the last decade, studies have shown the potential of using nutshell and fruit stones as activated carbon precursors [147][148][149]. Recent studies have shown nutshells derived almond [150], hazelnut [151], macadamia [50,61,152], pistachio [153], pecan [154], and walnut shells [155,156] from food processing industries are ideal precursors for activated carbons, while fruit stones from apricot [157][158][159], cherry [160], olives [161,162], and peaches [163,164] have all been used as precursors for the preparation of activated carbons. For example, Yalcin and Arol have investigated the adsorption of aurocyanide on activated carbons derived from hazel nutshells, peach, and apricot stones to ascertain their suitability as an alternative to activated carbon produced from coconut shells [48].…”

Section: Nutshells and Fruit Stonesmentioning

confidence: 99%

Adsorption of Gold on Granular Activated Carbons and New Sources of Renewable and Eco-Friendly Activated Carbons

Poinern¹,

Sharma²,

Fawcett³

2016

The Recovery of Gold From Secondary Sources

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Gold, a Historical PerspectiveGold is a metal that has fired the imagination of humanity for thousands of years and even today its allure continues to captivate the human mind. With a crustal abundance of only around 3-5 ppb, gold's scarcity has given the precious metal a unique status among many past and present civilizations. Its opaque, bright yellow color, and metallic lustre defines its physical beauty. The social structure and cultural atmosphere of many early civilizations valued gold so highly that they incorporated the ductile and malleable metal into lavish jewelry and elaborated ornaments for both decoration and religious purposes. Importantly, gold is chemically stable and not subject to atmospheric oxidation, and many of the artefacts that have survived from ancient civilizations still retain their physical beauty and lustre. Many civilizations, past and present, have used gold for the long-term building of wealth. Thus, ensuring the demand for this scarce metal is always high. Over the centuries, acquiring and building a gold

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“…In a work by Genceli et al (2002), they claimed that with an increase in reaction temperature, functional groups with oxygen decreased, whereas aromatic structures increased. However, with an increase of reaction temperature from 400 to 425 • C, in −OH band at 3600-3300 cm −1 , carbonyl structures at 1730-1650 cm −1 and aliphatic −CH 2 structures at 1520 cm −1 increased partially (Figure 8c).…”

Section: H Karacamentioning

confidence: 99%

Effects of Coal Liquefaction Parameters on the Removal of Oxygen and the Higher Heating Value of the Soluble Products

Karaca

2005

Energy Sources

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Preparation, modification, and characterization of pitches from apricot stones

Cited by 12 publications

References 13 publications

Agricultural Waste Conversion to Activated Carbon by Chemical Activation with Phosphoric Acid

Agricultural Waste Conversion to Activated Carbon by Chemical Activation with Phosphoric Acid

Adsorption of Gold on Granular Activated Carbons and New Sources of Renewable and Eco-Friendly Activated Carbons

Effects of Coal Liquefaction Parameters on the Removal of Oxygen and the Higher Heating Value of the Soluble Products

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