Surface characterization and comparative adsorption properties of Cr(VI) on pyrolysed adsorbents of Acacia mangium wood and Phoenix dactylifera L. stone carbon

Danish, Mohammed; Hashim, Rokiah; Ibrahim, Mohamad Nasir Mohamad; Rafatullah, Mohd; Sulaiman, Othman

doi:10.1016/j.jaap.2012.06.001

Cited by 49 publications

(21 citation statements)

References 31 publications

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“…Any attempt to reutilize this waste will be useful and acknowledged. Activated carbon derived from date stone were previously used for the adsorption of many pollutants including pesticides [10], phenol [11], copper [12], and chromium (VI) [13]. But, there are limited reports [14] on dye removal by activated carbon derived from date stone-spatially from the Rotab stage of palm-tree fruit; however, activated carbon is defined by its properties, its source as well as its production method.…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

Removal of a cationic dye from wastewater during purification byPhoenix dactylifera

Asgari

Ramavandi

Sahebi

2013

Desalination and Water Treatment

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A B S T R A C TThe activated carbon prepared from Phoenix dactylifera fruit stones was tested for the removal of methylene blue (MB) dye from aqueous solutions. Batch studies were carried out to evaluate the impacts of initial solution pH (2-12), chemically activated carbon (CAC) concentration (0.25-5 g/L), MB concentration (50-400 mg/L), and contact time (20-430 min) on the adsorption of MB onto CAC. Results showed that the adsorption of MB was favorable at neutral pH. The results demonstrated that the Langmuir isotherm model best represented the equilibrium data with a maximum MB adsorption capacity of 478.32 mg/g. Pseudo-second-order kinetic model was found to adequately describe the adsorption process. The calculated thermodynamic parameters showed that adsorption process was spontaneous endothermic and physisorption was possible under examined conditions. In the final part of the study, the efficacy of CAC was examined by analyzing the removal of dye from industrial wastewater.

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Section: Desalination and Water Treatmentmentioning

confidence: 99%

Removal of a cationic dye from wastewater during purification byPhoenix dactylifera

Asgari

Ramavandi

Sahebi

2013

Desalination and Water Treatment

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“…Rubber wood sawdust 5.7 6.0 [111] Moringa oleifera wood 11.5 1 7. 7 6.0 [112] Wood apple shell 2 7.6 6.5 [113] Rubber wood 44.1 2.0 [114] Fir wood 180.3 3.0 [115] Acacia mangium wood 37.2 2.0 [116] Tamarind wood 134.2 6.5 [117] Tamarind wood 43.9 6.0 [118] costs, reduced energy requirements, low maintenance and enhanced environmental benefits [119]. Constructed wetlands are passive treatment systems and may be broadly categorised in terms of (i) hydrology (surface/subsurface flow), (ii) flow path (horizontal or vertical flow) and (iii) type of macrophytic growth (free floating, submerged or emergent plant growth) [120].…”

Section: Cu(ii) Cd(ii) Cr(vi) Pb(ii) Zn(ii) Phmentioning

confidence: 99%

Advances in Metal Recovery from Wastewaters Using Selected Biosorbent Materials and Constructed Wetland Systems

Murnane¹,

Ghanim²,

O’Donoghue³

et al. 2019

Water and Wastewater Treatment

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An expanding global population not only increases the amounts of municipal solid waste and wastewater generated but also raises demand for a wide range of raw materials used to manufacture goods. Extraction of these raw materials and many subsequent manufacturing processes contribute significantly to the presence of a variety of metals in wastewaters and leachates. Metal-rich wastewaters not only result in short-and long-term environmental and associated health concerns but also have potential economic value if the metals can be recovered. In this chapter, we review the effectiveness of biochar, microbial and lignin biosorbents as well as constructed wetland systems to remove soluble metals from wastewaters. The wide variation in adsorptive capacity of these biosorbent materials reflects the heterogeneous nature of the source materials used for their production. Physical and chemical modifications of biochars and lignins generally improve their adsorptive capacities which remain highly variable. Constructed wetlands are attractive because of their passive nature with low-energy and low-maintenance requirements, although their long-term capacity to treat metal-rich wastewaters is as yet largely undetermined. Future perspectives focus on increasing the selectivity of adsorbents to remove complex matrices of metals from wastewaters and on increasing their adsorption/desorption capacities.

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“…However, incomplete metal removal processes, ineffectiveness at low metal concentrations, high energy inputs and costs, requirement for high amounts of chemical agents, and generation of toxic by-products as well as difficulties and costs in managing and treating them, limit the use of conventional methods in larger applications [6,8,9]. It is thus crucial to develop novel, effective and economic remediation technologies for removing Cr(VI) from Cr(VI)-bearing aqueous solutions [10].…”

Section: Introductionmentioning

confidence: 99%

Hexavalent chromium removal and total chromium biosorption from aqueous solution by Quercus crassipes acorn shell in a continuous up-flow fixed-bed column: Influencing parameters, kinetics, and mechanism

Aranda-García

Cristiani‐Urbina

2020

PLoS ONE

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Continuous fixed-bed column studies were carried out, utilizing acorn shell from Quercus crassipes Humb. & Bonpl. (QCS), in order to remove total chromium and Cr(VI) from aqueous solution. Effects of various fixed-bed column parameters such as influent solution pH, influent flow rate, QCS bed height, and influent Cr(VI) concentration were investigated. Results from the fixed-bed column experiments demonstrate that total chromium biosorption and Cr(VI) removal by QCS depend strongly on the pH of influent solution. The highest capacities for Cr(VI) removal and total chromium biosorption are about 181.56 and 110.35 mg g-1 and are achieved at influent solution pH of 1.0 and 2.0, respectively. Besides this, total chromium biosorption capacities increased from 104.25 to 116.14 mg g-1 , 109.07 to 117.44 mg g-1 , and 85.02 to 129.87 mg g-1 , as bed height, inlet flow rate, and influent Cr(VI) concentration increased from 1.7 to 6.5 cm, 0.25 to 1 mL min-1 , and 50 to 400 mg L-1 , respectively. The dose-response model defines the entire breakthrough curve for total chromium biosorption onto QCS, under all experimental conditions. X-ray photoelectron spectroscopy (XPS) and biosorption kinetic studies revealed that QCS is able to remove toxic Cr (VI) from acidic liquid solution by means of a complex mechanism that involves the binding of Cr(VI) oxyanions to positively charged groups present at the QCS surface, after which the Cr(VI) species are reduced to Cr(III) by adjacent electron donor groups, and the generated Cr(III) ions then become partially bound to the QCS biomass and partially released into the liquid phase. Results show that QCS can be employed as an easily accessible, abundant, eco-friendly, and inexpensive biosorbent for the removal of total chromium and Cr(VI) from Cr(VI) solutions, in continuous operation.

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Surface characterization and comparative adsorption properties of Cr(VI) on pyrolysed adsorbents of Acacia mangium wood and Phoenix dactylifera L. stone carbon

Cited by 49 publications

References 31 publications

Removal of a cationic dye from wastewater during purification byPhoenix dactylifera

Removal of a cationic dye from wastewater during purification byPhoenix dactylifera

Advances in Metal Recovery from Wastewaters Using Selected Biosorbent Materials and Constructed Wetland Systems

Hexavalent chromium removal and total chromium biosorption from aqueous solution by Quercus crassipes acorn shell in a continuous up-flow fixed-bed column: Influencing parameters, kinetics, and mechanism

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