The use of Apatite II™ to remove divalent metal ions zinc(II), lead(II), manganese(II) and iron(II) from water in passive treatment systems: Column experiments

Oliva, Josep; Pablo, Joan de; Cortina, José Luis; Cama, Jordi; Ayora, Carlos

doi:10.1016/j.jhazmat.2010.08.045

Cited by 60 publications

(33 citation statements)

References 27 publications

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“…The sorption process of metal ions involves complex adsorption on the adsorption sites on the HAP surface [19]. For the mechanism of ions retention, ion exchange was considered, for instance for Pb 2+ [1,15], where the incorporation of Pb in the HAP lattice was evidenced, or for Cd 2+ [33]. For Zn 2+ , Fe 2+ and Mn 2+ the formation of metal phosphates was considered [15], by dissolution of HAP and precipitation of phosphate ions with the heavy metal ions.…”

Section: Metal Ions Removal From Mine Wastewater Samplesmentioning

confidence: 99%

Hydroxyapatite for removal of heavy metals from wastewater

Avram¹,

Frențiu²,

Horovitz³

et al. 2017

Studia UBB Chemia

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ABSTRACT. HAP powder of a low crystallinity and rather large specific surface area was synthesized by an environmentally friendly, cost effective precipitation method, and characterized by XRD, FTIR, and BET isotherms. TEM and AFM are used to envisage the surface of HAP nano particles, showing a high porosity of this ceramic powder. It was used for the removal of metals (Al, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, and Zn) from mine wastewater. Metal contents in the initial and treated samples were quantified by inductively coupled plasma atomic emission spectrometry and high-resolution continuum source atomic absorption spectrometry. By the use of HAP, an efficient removal of all metals was ensured. The increase of Ca 2+ ions content in the treated water suggests an ion exchange mechanism.

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Section: Metal Ions Removal From Mine Wastewater Samplesmentioning

confidence: 99%

Hydroxyapatite for removal of heavy metals from wastewater

Avram¹,

Frențiu²,

Horovitz³

et al. 2017

Studia UBB Chemia

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“…The particles of hydroxyapatite have an average diameter of \1 mm. Apatite II TM , a product derived from fish waste and having the general formula Ca 10-X Na X (PO 4 ) 6 (CO 3 ) X (OH) 2 (where X \ 1) was used in a PRB to treat groundwater containing high concentrations of Zn, Pb, Cd, Cu, SO 4 , and NO 3 [13,17]. When using apatites in PRBs, the processes contributing to capture are adsorption, substitution, and inclusion (mechanical trapping).…”

Section: Introductionmentioning

confidence: 99%

“…Dissolution of apatite may cause an increase in the pH to values between 6.5 and 7 [17]. Moreover, P removal was observed at the outlet of the cell because of the precipitation of copper phosphate [17].…”

Section: Introductionmentioning

confidence: 99%

Formulation of a Permeable Reactive Mixture for Groundwater Remediation Based on an Industrial Co-product: Permeability and Copper Retention Study

Belhaj-Trabelsi

Lafhaj

Zakaria

et al. 2015

Waste Biomass Valor

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The objective of this research is to formulate a permeable material based on apatite gel having the ability to retain heavy metals, to be used in a permeable reactive barrier (PRB), an in situ passive groundwater treatment technology. This new material is produced from non-toxic waste in the research laboratory of a chemical company. It is characterised by a thixotropic behaviour and a high ion exchange capacity. The apatite gel is the active agent of the reactive material; it ensures the retention of heavy metals by ion exchange. Sand and an organic binder are also incorporated into the mixture, providing both high permeability and mechanical strength to the mixtures. An original experimental apparatus intended for measuring both water permeability and the retention of heavy metals has been specially designed and developed for this study. The mixture consisting of 95 % silica sand, 5 % apatite gel and 3 % epoxy was qualified as a suitable PRB mixture, due its high permeability, its good retention capacity and its acceptable mechanical strength.

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“…Iron ions are attracting wide research attention since they are found in many manufacturing industries such as coatings, car, aeronautic and steel industries [9]. Many absorbents have been reported for removal of iron ions (Fe 2+ or Fe 3+ ), such as bacterias [9,10], chitin [11], palm fruit bunch and maize cob [12], Bengal gram husk [13], tur dal husk [14], eggshells [15], ash [16], sawdust [17], activated carbon [18], natural zeolite [19], bentonite and quartz [20], and apatite [21][22][23].…”

Section: Introductionmentioning

confidence: 99%