title: Catalyst-coated cement beads for the degradation and mineralization of fungicide carbendazim using laboratory and pilot-scale reactor: catalyst stability analysis.
abstract: The fixed-bed photocatalytic degradation of fungicide carbendazim using catalyst-coated spherical cement beads has been investigated. Thirty beads with optimum size 13 mm along with 0.3 gL-1H2O2with an initial concentration of carbendazim of 10 mgL-1were the optimized conditions for better degradation. The reduction in COD and total organic carbon along with the generation of nitrite and nitrate ions under the optimized conditions confirms the complete mineralization of compound. The suggested degradation pathway for carbendazim has also been proposed as intermediates formed during photodegradation were analyzed through gas chromatography-mass spectrometry. The coated cement beads were found to be durable even after 30 cycles as confirmed by scanning electron microscopy and energy dispersive spectroscopy analysis. Scale-up trails have also been carried out in a solar-baffled fixed-bed reactor for the degradation of pollutant to seek the commercial viability of the technique.
authors.affiliation: a School of Energy and Environment , Thapar University , Patiala , India.
authors.forename: Amanjit
authors.identifier: http://orcid.org/0000-0001-6992-9166
authors.initials: A
authors.lastname: Singh
authors.affiliation: a School of Energy and Environment , Thapar University , Patiala , India.
authors.forename: Anoop
authors.initials: A
authors.lastname: Verma
authors.affiliation: a School of Energy and Environment , Thapar University , Patiala , India.
authors.forename: Palak
authors.initials: P
authors.lastname: Bansal
authors.affiliation: a School of Energy and Environment , Thapar University , Patiala , India.
authors.forename: Kashish
authors.identifier: http://orcid.org/0000-0003-2870-220X
authors.initials: K
authors.lastname: Aggarwal
authors.affiliation: b SSB University Institute of Chemical Engineering and Technology , Panjab University , Chandigarh , India.
authors.forename: Taranjeet
authors.initials: T
authors.lastname: Kaur
authors.affiliation: b SSB University Institute of Chemical Engineering and Technology , Panjab University , Chandigarh , India.
authors.forename: Amrit Pal
authors.initials: AP
authors.lastname: Toor
authors.affiliation: c Department of Chemical Engineering , Thapar University , Patiala , India.
authors.forename: Vikas Kumar
authors.initials: VK
authors.lastname: Sangal
mesh_terms: D001562:Benzimidazoles / Q000737:chemistry*; D002219:Carbamates / Q000737:chemistry*; D005659:Fungicides, Industrial / Q000737:chemistry*; D008956:Models, Chemical; D010782:Photolysis; D014874:Water Pollutants, Chemical / Q000737:chemistry
chemical_list: D001562:Benzimidazoles; D002219:Carbamates; D005659:Fungicides, Industrial; D014874:Water Pollutants, Chemical; C006698:carbendazim
keywords: Carbendazim; cement beads; durability; mineralization; photocatalysis