Duckweed is a potential collector of nitrogen from animal liquid manure and source protein suitable as feed for livestock fish. Therefore, it provides opportunities circular economy systems. Two duckweed species, Spirodela polyrhiza Landoltia punctata , were grown in five recirculating systems each connected to reservoir tank filled with water graded organic cattle slurry concentrations. Fresh ...

In this work, TiO 2 photocatalysis was used to disinfect domestic wastewaters previously treated by different biological treatment systems: Upward-flow Anaerobic Sludge Blanket (UASB), facultative pond, and duckweed pond. The microorganisms monitored were E. coli, total coliforms, Shigella species, and Salmonella species. Photocatalytic experiments were carried out using two light sources: a so...

Abstract Background The plant body in duckweed species has undergone reduction and simplification from the ancient Spirodela towards more derived Wolffia species. Among five genera, members are rootless represent smallest most reduced A better understanding of frond architecture is necessary to fully explore evolution. Results We conducted a comprehensive study morphology anatomy globosa , only...

An experiment was carried out at the Agronomy Research Farm of Sher-e-Bangla Agricultural University, Dhaka during period from November 2018 to June 2019 study nitrogen requirement boro rice grown with floating duckweed. The laid in a Factorial Randomized Complete Block Design three replications. treatments were duckweed: viz. D0 = Control (0 g duckweeds m-2), D1 200 m-2, D2 400 m-2 and D3 600 ...