Production of activated carbon from acorns and olive seeds

Lafi, Walid K.

doi:10.1016/s0961-9534(00)00062-3

Cited by 79 publications

(31 citation statements)

References 13 publications

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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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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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“…Several studies have been reported to find low-cost carbonaceous materials. Ultimately, Jerusalem artichoke (Yu and Luo 2014), waste rice hulls (Luna et al 2013), homemade cocoa shell (Ribas et al 2014), waste tea (Auta and Hameed 2011), coir pith (Santhy and Selvapathy 2006), orange peels (Fernandez et al 2014), jute sticks (Asadullah et al 2010), olive stones (Rodriguez-Reinoso et al 2001;Lafi. 2001;Elsheikh et al 2003), sugarcane bagasse (Ahmedna et al 2000), pecan shells (Shawabkeh et al 1998), and palm seed (Rengarag et al 2002).…”

Section: Introductionmentioning

confidence: 99%

The potential use of activated carbon prepared from Ziziphus species for removing dyes from waste waters

Regti¹,

Laamari²,

Stiriba³

et al. 2017

Appl Water Sci

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In this study, the adsorption potential of activated carbon prepared from Ziziphus mauritiana nuts for the removal of methylene blue (MB) from aqueous solution has been investigated using batch mode experiments. The effects of some operating parameters on the removal dye such as, initial pH (2-12), temperature (298-328 K), initial MB concentration (20-100 mg L -1 ), and contact time (5-70 min) were investigated. Adsorption kinetic showed that the rate adsorption followed the pseudo-second-order kinetic model. Four adsorption isotherms models were applied to experimental equilibrium data (Langmuir, Freundlich, Redlich-Peterson, and Fritz-Schlunder) and the different constants were calculated using non-linear equations models. Fritz-Schlunder model was found the best one to describe the adsorption process which suggests that the adsorption of MB onto activated carbon derived from Ziziphus mauritiana is heterogeneous with a multilayer. Thermodynamic adsorption showed that the process was endothermic and spontaneous in nature.

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“…Inexpensive substances with high carbon content and low inorganic content are potential raw materials for activated carbon production. The most frequently used raw materials for manufacturing activated carbon are coal (Chattopadhyaya et al, 2006;Jibril et al, 2007;Pietrzak et al, 2007), wood wastes (Girods et al, 2009), lignite, pistachio nut shells (Lua and Yang, 2005), corncobs (Cao et al, 2006), coconut shells (Achaw and Afrane, 2008), walnut shells (Kim et al, 2001;Martinez et al, 2006), mango pits (Elozalde-Gonzalez and Hernandez-Montoya, 2007), tobacco stems (Li et al, 2008), coffee bean husks (Baquero et al, 2003), cherry stones (Oilvares-Marin et al, 2007), olive pits (Lafi, 2001;Stavropoulos and Zabaniotou, 2005), and sawdust (Ismadji et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Production of granular activated carbon from food-processing wastes (walnut shells and jujube seeds) and its adsorptive properties

Bae

Kim

Chung

2014

Journal of the Air & Waste Management Association

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Commercial activated carbon is a highly effective absorbent that can be used to remove micropollutants from water. As a result, the demand for activated carbon is increasing. In this study, we investigated the optimum manufacturing conditions for producing activated carbon from ligneous wastes generated from food processing. Jujube seeds and walnut shells were selected as raw materials. Carbonization and steam activation were performed in a fixed-bed laboratory electric furnace. To obtain the highest iodine number, the optimum conditions for producing activated carbon from jujube seeds and walnut shells were 2 hr and 1.5 hr (carbonization at 700 C) followed by 1 hr and 0.5 hr (activation at 1000 C), respectively. The surface area and iodine number of activated carbon made from jujube seeds and walnut shells were 1,477 and 1,184 m 2 /g and 1,450 and 1,200 mg/g, respectively. A pore-distribution analysis revealed that most pores had a pore diameter within or around 30-40 Å, and adsorption capacity for surfactants was about 2 times larger than the commercial activated carbon, indicating that waste-based activated carbon can be used as alternative.Implications: Wastes discharged from agricultural and food industries results in a serious environmental problem. A method is proposed to convert food-processing wastes such as jujube seeds and walnut shells into high-grade granular activated carbon. Especially, the performance of jujube seeds as activated carbon is worthy of close attention. There is little research about the application of jujube seeds. Also, when compared to two commercial carbons (Samchully and Calgon samples), the results show that it is possible to produce high-quality carbon, particularly from jujube seed, using a one-stage, 1,000 C, steam pyrolysis. The preparation of activated carbon from food-processing wastes could increase economic return and reduce pollution.

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Production of activated carbon from acorns and olive seeds

Cited by 79 publications

References 13 publications

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

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

The potential use of activated carbon prepared from Ziziphus species for removing dyes from waste waters

Production of granular activated carbon from food-processing wastes (walnut shells and jujube seeds) and its adsorptive properties

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