Photocatalytic degradation of pharmaceutical wastes by alginate supported TiO2 nanoparticles in packed bed photo reactor (PBPR)

Ecotoxicology and Environmental Safety
Santanu SarkarChiranjib Bhattacharjee

Abstract

In recent years deposal of pharmaceutical wastes has become a major problem globally. Therefore, it is necessary to removes pharmaceutical waste from the municipal as well as industrial effluents before its discharge. The convectional wastewater and biological treatments are generally failed to separate different drugs from wastewater streams. Thus, heterogeneous photocatalysis process becomes lucrative method for reduction of detrimental effects of pharmaceutical compounds. The main disadvantage of the process is the reuse or recycle of photocatalysis is a tedious job. In this work, the degradation of aqueous solution of chlorhexidine digluconate (CHD), an antibiotic drug, by heterogeneous photocatalysis was study using supported TiO2 nanoparticle. The major concern of this study is to bring down the limitations of suspension mode heterogeneous photocatalysis by implementation of immobilized TiO2 with help of calcium alginate beads. The alginate supported catalyst beads was characterized by scanning electron microscopy coupled with energy dispersive X-ray spectroscopy (SEM/EDAX) as well as the characteristic crystalline forms of TiO2 nanoparticle was confirmed by XRD. The degradation efficiency of TiO2 impregnated alginate bea...Continue Reading

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Citations

Aug 28, 2016·Environmental Science and Pollution Research International·Pardeep SinghPradeep Kumar Mishra
Dec 3, 2016·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·S KlementovaM Zlamal
Mar 11, 2019·Journal of Environmental Management·Patricia García-MuñozJose A Casas
Mar 1, 2021·Environmental Science and Pollution Research International·Mohammad YousefiSomayeh Mirsadeghi
Jul 30, 2020·Journal of Environmental Management·Kannappan Panchamoorthy GopinathGoutham Rangarajan

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