Use of Calcined Gibbsite to Remove Cisplatin from Aqueous Solutions

Ogata, Fumihiko; Inoue, Kenji; Tominaga, Hisato; Iwata, Yuka; Ueda, Ayaka; Tanaka, Yūko; Kawasaki, Nana

doi:10.2965/jwet.2014.13

Cited by 7 publications

(2 citation statements)

References 25 publications

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“…The adsorption of cisplatin was performed using calcinated gibbsite: equilibrium adsorption of cisplatin was obtained within 24 h, with an optimal loading at pH 8. The negative ∆G and ∆H values obtained indicated chemisorption [152]. Desorption experiments were conducted by treating the material with hydrochloric acid which reached a nearly complete recovery of Pt.…”

Section: Adsorptionmentioning

confidence: 99%

The Dark Side of Platinum Based Cytostatic Drugs: From Detection to Removal

et al. 2021

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The uncontrolled release of pharmaceutical drugs into the environment raised serious concerns in the last decades as they can potentially exert adverse effects on living organisms even at the low concentrations at which they are typically found. Among them, platinum based cytostatic drugs (Pt CDs) are among the most used drugs in cancer treatments which are administered via intravenous infusion and released partially intact or as transformation products. In this review, the studies on environmental occurrence, transformation, potential ecotoxicity, and possible treatment for the removal of platinum cytostatic compounds are revised. The analysis of the literature highlighted the generally low total platinum concentration values (from a few tens of ng L−1 to a few hundred μg L−1) found in hospital effluents. Additionally, several studies highlighted how hospitals are sources of a minor fraction of the total Pt CDs found in the environment due to the slow excretion rate which is longer than the usual treatment durations. Only some data about the impact of the exposure to low levels of Pt CDs on the health of flora and fauna are present in literature. In some cases, adverse effects have been shown to occur in living organisms, even at low concentrations. Further ecotoxicity data are needed to support or exclude their chronic effects on the ecosystem. Finally, fundamental understanding is required on the platinum drugs removal by MBR, AOPs, technologies, and adsorption.

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Section: Adsorptionmentioning

confidence: 99%

The Dark Side of Platinum Based Cytostatic Drugs: From Detection to Removal

et al. 2021

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“…The Langmuir isotherm model evaluates the adsorption system based on monolayer adsorption on the active sites of the adsorbent. The Langmuir model is expressed by 36) e e s e s…”

Section: Adsorption Isotherms Of Phosphoric Acids In Solutions With Dmentioning

confidence: 99%

Adsorption of Orthophosphoric, Pyrophosphoric, and Tripolyphosphoric Acids from Aqueous Solutions by Calcined Gibbsite

Ogata

Ueda

Kawasaki

2014

CHEMICAL & PHARMACEUTICAL BULLETIN

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In this research, gibbsite (GB) samples calcined at 200-1000°C (GB200-GB1000) were produced. These GBs were used to adsorb orthophosphoric, pyrophosphoric, and tripolyphosphoric acids from aqueous solutions. The properties (amounts of hydroxyl groups, specific surface areas, mean pore diameters, and solution pHs) of the GBs were investigated, and their adsorption capacities for phosphoric acids evaluated. The amount of hydroxyl groups (0.46 mmol/g) and specific surface area (295.3 m 2 /g) of GB400 were greater than those of the other GBs. The mechanism of phosphoric acid adsorption on the GBs was related to the amount of hydroxyl groups and specific surface area. The optimal pH for phosphoric acid adsorption by GBs was 2.0-3.0. Equilibrium adsorption was reached within 24 h. The adsorption processes followed a pseudo-second-order kinetic model (correlation coefficient, 0.998-0.999). The adsorption capacity increased with increasing temperature. The adsorption isotherm data fitted the Langmuir (correlation coefficient: 0.921-0.992) and Freundlich (correlation coefficient: 0.948-0.997) equations well. Our results will be useful when developing methods for the adsorption of phosphoric acids from aqueous solutions.

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