Biogenic hydroxyapatite (Apatite II™) dissolution kinetics and metal removal from acid mine drainage

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

doi:10.1016/j.jhazmat.2012.01.027

Cited by 58 publications

(33 citation statements)

References 35 publications

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“…PRB lifetimes are determined by both the treatment performance and by the hydraulic conductivity of the filling material. Apatite has been shown to be a good PRB filling material for remediating AMD or other metalloid-or metal-contaminated ground waters (Choi et al, 1997;Conca and Wright, 2006;Liu et al, 2010;Oliva et al, 2012;Oliva et al, 2011;Sneddon et al, 2005). Our study has shown that, although Mn-coated bone char with low amounts of Mn (<4.85 mg/g Mn; Table 1, Fig.…”

Section: Practical Significance For Prbsmentioning

confidence: 63%

“…Bone char is a unique biological apatite which has a relatively pure composition (Ca 5 (PO 4 ) 3 OH) and is derived from the calcination of animal bone. It can also be used for the remediation of AMD due to its good hydraulic conductivity and its ability to neutralise pH and remove metalloid and metallic elements (Liu et al, 2012;Oliva et al, 2012). Sneddon et al (2005) and Chen et al (2008) used bone char to remove As(V) in the concentration range 4-100 mg/L and 0.5-1.5 mg/L, and showed that it is a good sorbent for As(V) in the pH range 2-5.…”

Section: Introductionmentioning

confidence: 99%

“…The transport behaviour of As(V) was investigated using bone char-filled column experiments, in which the corresponding relationship of the coating and the retention ability of As(V) was described quantitatively. As laboratory studies have also demonstrated that bone char is highly porous and is able to neutralize acidic solutions (Liu et al, 2012;Oliva et al, 2012), we also determined the neutralization potential of the Mn-coated bone char. The results give new perspectives on, and knowledge of, As(V) transport and retention within PRBs when Mn-bearing coatings develop on the bone char filling materials.…”

Section: Introductionmentioning

confidence: 99%

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The role of nano-sized manganese coatings on bone char in removing arsenic(V) from solution: Implications for permeable reactive barrier technologies

Liu

Dong

et al. 2016

Chemosphere

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Although the removal of arsenic(V) (As(V)) from solution can be improved by forming metal-bearing coatings on solid media, there has been no research to date examining the relationship between the coating and As(V) sorption performance. Manganese-coated bone char samples with varying concentrations of Mn were created to investigate the adsorption and desorption of As(V) using batch and column experiments. Breakthrough curves were obtained by fitting the Convection-Diffusion Equation (CDE), and retardation factors were used to quantify the effects of the Mn coatings on the retention of As(V). Uncoated bone char has a higher retention factor (44.7) than bone char with 0.465 mg/g of Mn (22.0), but bone char samples with between 5.02 mg/g and 14.5 mg/g Mn have significantly higher retention factors (56.8-246). The relationship between retardation factor (Y) and Mn concentration (X) is Y = 15.1 X + 19.8. Between 0.2% and 0.6% of the sorbed As is desorbed from the Mn-coated bone char at an initial pH value of 4, compared to 30% from the uncoated bone char. The ability of the Mn-coated bone char to neutralize solutions increases with increased amounts of Mn on the char. The results suggest that using Mn-coated bone char in Permeable Reactive Barriers would be an effective method for remediating As(V)-bearing solutions such as acid mine drainage.

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Section: Practical Significance For Prbsmentioning

confidence: 63%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The role of nano-sized manganese coatings on bone char in removing arsenic(V) from solution: Implications for permeable reactive barrier technologies

Liu

Dong

et al. 2016

Chemosphere

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“…Ãідроксиапатит, як частина мінерального складу кісткової тканини, має з нею високу біосумісність, а тому досить часто використовується в остеопластиці для реконструкції пошкодженої внаслідок хвороби (остеомієліт, саркома) чи травми ділянки кістки [1][2][3]. Через відсутність необхідних фізико-хімічних властивостей в чистій кераміці на основі біогенного гідроксиапатиту (БÃÀ) факт її модифікації різними сполуками є цілком логічним та вмотивованим.…”

Section: введенняunclassified

Features of Adsorption of Drugs of Various Molecular Weight by the Biogenic Hydroxyapatite Doped with a Nanomagnetite

2017

Nanosist. Nanomater. Nanotehnol.

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“…Mn 2+ hinders the degradation of DEP by UV/H 2 O 2 process, obviously, as Mn belongs to transition metals and it can absorb organic matter in the solution (Dao and De Laat 2011;Ochoa-Loza et al 2001;Ramezanzadeh et al 2010;Ren et al 2012;Watanabe et al 2012;Xu et al 2007b). And, the Mn 2+ can react with organic matter molecule (Bienkowski et al 2002;Chen et al 2012;Oliva et al 2012;Rounaghi et al 2012). Thus, Mn 2+ reacts with DEP molecule with complexation reaction.…”

Section: Effect Of Coexisting Cationsmentioning

confidence: 99%

Comparative study of diethyl phthalate degradation by UV/H2O2 and UV/TiO2: kinetics, mechanism, and effects of operational parameters

Song

Wang

Ren

et al. 2015

Environ Sci Pollut Res

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The photodegradation of diethyl phthalate (DEP) by UV/H2O2 and UV/TiO2 is studied. The DEP degradation kinetics and multiple crucial factors effecting the clearance of DEP are investigated, including initial DEP concentration ([DEP]0), initial pH values (pH0), UV light intensity, anions (Cl(-), NO(3-), SO4 (2-), HCO3 (-), and CO3 (2-)), cations (Mg(2+), Ca(2+), Mn(2+), and Fe(3+)), and humic acid (HA). Total organic carbon (TOC) removal is tested by two treatments. And, cytotoxicity evolution of DEP degradation intermediates is detected. The relationship between molar ratio ([H2O2]/[DEP] or [TiO2]/[DEP]) and degradation kinetic constant (K) is also studied. And, the cytotoxicity tests of DEP and its degradation intermediates in UV/H2O2 and UV/TiO2 treatments are researched. The DEP removal efficiency of UV/H2O2 treatment is higher than UV/TiO2 treatment. The DEP degradation fitted a pseudo-first-order kinetic pattern under experimental conditions. The K linearly related with molar ratio in UV/H2O2 treatment while nature exponential relationship is observed in the case of UV/TiO2. However, K fitted corresponding trends better in H2O2 treatment than in TiO2 treatment. The Cl(-) is in favor of the DEP degradation in UV/H2O2 treatment; in contrast, it is disadvantageous to the DEP degradation in UV/TiO2 treatment. Other anions are all disadvantageous to the DEP degradation in two treatments. Fe(3+) promotes the degradation rates significantly. And, all other cations in question inhibit the degradation of DEP. HA hinders DEP degradation in two treatments. The intermediates of DEP degradation in UV/TiO2 treatment are less toxic to biological cell than that in UV/H2O2 treatment.

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Biogenic hydroxyapatite (Apatite II™) dissolution kinetics and metal removal from acid mine drainage

Cited by 58 publications

References 35 publications

The role of nano-sized manganese coatings on bone char in removing arsenic(V) from solution: Implications for permeable reactive barrier technologies

The role of nano-sized manganese coatings on bone char in removing arsenic(V) from solution: Implications for permeable reactive barrier technologies

Features of Adsorption of Drugs of Various Molecular Weight by the Biogenic Hydroxyapatite Doped with a Nanomagnetite

Comparative study of diethyl phthalate degradation by UV/H2O2 and UV/TiO2: kinetics, mechanism, and effects of operational parameters

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