Granular activated carbon (GAC) adsorption has found wide application as a treatment process for the removal of natural organic matter, small compounds (e.g. pesticides), inorganic heavy metals), taste and odour in water over many years. During GAC operation, contaminants are adsorbed becomes progressively saturated time, requiring periodic regeneration media to restore its capacity. Chemical b...

Abstract The present work deals with the chemical recycling of waste polypropylene via thermocatalytic pyrolysis over HZSM‐5 zeolite catalysts. main aim was to systematically investigate influence reactor configuration, acidity, wastes, obtained from different sources, as well catalyst regeneration on product distribution. It demonstrated that configuration and acid site density catalysts stron...

While ionic liquids (ILs) have been considered as effective and “green” solvents for biopolymer processing, regeneration of IL-dissolved biopolymers could largely impact structure properties. This study indicates that the reconstitution chitosan during from 1-ethyl-3-methylimidazolium acetate ([Emim][OAc]) depends on anti-solvent (water, methanol or ethanol) largely. Irrespective anti-solvent, ...

The present studies report in vitro propagation of a rare and medicinally important orchid Vanda testacea through foliar explants. Explants were cultured on Mitra et al. (M) medium and its combinations with cytokinins (BAP, Kn 1 mgl each) and auxin (NAA 1 mgl) individually and in combination for initiation of regeneration response, proliferation of regenerants and subsequent development of plan...

Forty-four percent and 72% hepatectomy were carried out in dogs and the animals were sacrificed for biochemical and pathologic studies from 0.5 to 6 days later. Compensatory hypertrophy and hyperplasia ("regeneration") were evident within 1 day, reached a maximum in 3 days, and were almost complete by 6 days. Coincident with the histologic events of regeneration were decreases in responsiveness...

WHEN a piece of a stem is cut out from a plant one or more new shoots will usually arise at the apical, and roots at the basal end of the piece. This phenomenon of axial polarity was explained by the older botanists as being due to a flow of shoot-forming substances to the apex and of root-forming sulbstances to the base. The gathering of these substances at opposite ends of the piece was belie...

Overview The demand for facial skin rejuvenation has seen recent, unprecedented growth. As people have become more aware about their cosmetic appearance, there has been a greater demand for newer technologies for treating aged and actinically damaged facial skin. Despite various methods available, the use of chemical peeling agents continues to be the gold standard. Chemical peeling is a proced...