Adsorption of zinc by activated carbons prepared from solvent extracted olive pulp

Galiatsatou, Polymnia; Metaxas, Michail; Kasselouri-Rigopoulou, V.

doi:10.1016/s0304-3894(02)00008-0

Cited by 91 publications

(44 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The solid carbonaceous bio-char residue is rich in elemental carbon and nutrients. It has potential to be applied into the soil for improving N fertilizer use efficiency [16] or can be used as an adsorbent [17]. Thus, the pyrolysis can not only provide enough energy to meet the energy demand of the facilities but also help to dispose of the residues for reduced environmental pollution.…”

Section: Introductionmentioning

confidence: 99%

Thermochemical treatment of olive mill solid waste and olive mill wastewater

Guida

Bouaik

Tabal

et al. 2015

J Therm Anal Calorim

View full text Add to dashboard Cite

In olive-oil-producing countries, large amounts of waste material are generated as by-product for which there is no ready use and in some cases may have a negative value because of the cost of disposal. Most of these countries depend on fossil fuels for their energy uses, and olive mill wastes can be used to supplement such energy sources using thermochemical conversion processes such as pyrolysis. However, efficient operation of thermochemical conversion systems requires a thorough understanding of the influence of the composition and thermal properties of these byproducts on their behaviour during the conversion process. In this study, the thermal behaviour of two olive mill wastes samples (olive mill solid waste: OMSW, and concentrated olive mill wastewater: COMWW) was examined at different heating rates ranging from 5 to 50°C min -1 in inert atmosphere using the technique of thermogravimetric analysis. As the increment of heating rates, the variations of characteristic parameters from the TG-DTG curves were determined. The initial temperature of degradation is higher in OMSW, which present a high amount of cellulose in comparison with COMWW. Three methods were used for the determination of kinetic reaction parameters: Friedman, Ozawa-Flynn-Wall and Vyazovkin methods. The results showed that apparent activation energy obtained for the decomposition of hemicelluloses and cellulose derived from OMSW was given as 150-176 and 210.5-235.7 kJ mol -1 , while for COMWW, the values were 133-145 and 255-275 kJ mol -1 , respectively.

show abstract

Section: Introductionmentioning

confidence: 99%

Thermochemical treatment of olive mill solid waste and olive mill wastewater

Guida

Bouaik

Tabal

et al. 2015

J Therm Anal Calorim

View full text Add to dashboard Cite

show abstract

“…Adsorption is a highly recommended technique for properly treating wastewater, when there are ions in solution. Traditionally used materials such as chitosan (Bratskaya et al, 2009;Shen et al, 2013), activated carbon Naushad, 2012;Galiatsatou;Metaxas;KasselouriRigopoulou, 2002), inorganic ion exchange resins (Gupta;Singh;Rahman, 2004;Jha et al, 2009), zeolites Karapinar;Donat, 2004;Peng, 2010), or some combination of these (Wan Ngah et al, 2012;Yuan;Liu, 2013), can be used to remove metal ions, such as Ag, Cd, Co, Cr, Cu, Hg, Mn, Ni, Pb and Zn from an aqueous medium.…”

Section: Introductionmentioning

confidence: 99%

Removal of Cu2+ and Zn2+ from aqueous medium using ionic polyacrylamides

Nascimento¹,

Nunes²,

Melo³

et al. 2017

Global NEST Journal

View full text Add to dashboard Cite

The wastewater produced by the galvanoplasty industryis a serious environmental problem due to the high concentrations of heavy metals. In this study polymers were used in ionic flocculation to treat synthetic wastewater containing metals, applying four types of polyacrylamides with different ionic loads as agents to remove copper and zinc. Metal removal efficiency was assessed considering the influence of polymer concentration, ionic load and pH. Selectivity (Cu 2+ /Zn 2+ ) at different polymer concentrations was also evaluated. The results confirm that polyacrylamide is efficient in treating wastewater containing heavy metals. These experiments exhibited removal efficiency of around 40% and pH= 4,5; however, efficiency was more than 80% with pH= 7.0 under the same conditions, when polyacrylamides with average ionicity were used.

show abstract

“…6 In past decades, activated carbon had been used for wastewater treatment and exhibited high adsorption capacity for organic pollutants due to its high speci¯c surface area, adequate pore size distribution and relatively high mechanical strength. 7,8 However, commercially available activated carbons are high in-cost and di±cult to regenerate with low recyclability. 9,10 Therefore, the development of alternative adsorbents has attracted extensive attention.…”

Section: Introductionmentioning

confidence: 99%

Novel in situ Synthesized Fe@C Magnetic Nanocapsules Used as Adsorbent for Removal of Organic Dyes and its Recycling

Shah

et al. 2016

NANO

View full text Add to dashboard Cite

Core/shell type carbon-coated Fe nanocapsules (Fe@C NCs) were in situ synthesized by DC arcdischarge plasma method in methane atmosphere. Such Fe nanocapsules have saturation magnetization of 29.32 emu/g and speci¯c surface area of 85.86 m 2 /g. The carbon shell of Fe@C NCs was functionalized with oxygen-containing groups (such as -OH or -COOH) by using H 2 O 2 . The adsorption of organic dye, e.g., methylene blue (MB) was systematically investigated in di®erent conditions, such as contact time, pH values and temperature. The maximum adsorption capacity (46.5 mg/g) was calculated by¯tting the adsorption isotherms with Langmuir model, coincident with the experimental result of 44.5 mg/g. Kinetics data supported pseudo-second order model, and the thermodynamic process of adsorption was revealed as endothermic and spontaneous physisorption. The MB-absorbed Fe@C NCs can be entirely separated from the contaminative solution by a magnetic¯eld and then successfully cycled for regeneration. After repetitive cycles * Corresponding author. 1650013-1NANO: Brief Reports and Reviews Vol. 11, No. 2 (2016) of the adsorption/desorption experiments for¯ve times, the removal e±ciency can be maintained over 90%.

show abstract

Adsorption of zinc by activated carbons prepared from solvent extracted olive pulp

Cited by 91 publications

References 18 publications

Thermochemical treatment of olive mill solid waste and olive mill wastewater

Thermochemical treatment of olive mill solid waste and olive mill wastewater

Removal of Cu2+ and Zn2+ from aqueous medium using ionic polyacrylamides

Novel in situ Synthesized Fe@C Magnetic Nanocapsules Used as Adsorbent for Removal of Organic Dyes and its Recycling

Contact Info

Product

Resources

About