Preparation and characterization of Azadirachta indica A. Juss. plant based natural coagulant for the application of urban sewage treatment: Modelling and cost assessment
| Autor: | Karchiyappan Thirugnanasambandham, Rama Rao Karri |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
021110 strategic
defence & security studies Materials science biology business.industry 0211 other engineering and technologies Soil Science Sewage Plant based 02 engineering and technology Plant Science 010501 environmental sciences Azadirachta biology.organism_classification Pulp and paper industry 01 natural sciences Cost assessment Coagulation (water treatment) Sewage treatment Turbidity business Optical emission spectrometry 0105 earth and related environmental sciences General Environmental Science |
| Zdroj: | Environmental Technology & Innovation. 23:101733 |
| ISSN: | 2352-1864 |
| Popis: | The aim of the present study was to investigate the efficiency of Azadirachta indica A. Juss. plant based natural coagulation (NC) and chemical coagulation (CC) to treat urban sewage. Aluminium sulphate (Al2(SO4)3 ⋅ 6H2O) was used as a chemical coagulant. NC was examined using Fourier-transform infrared spectroscopy (FT-IR), Scanning electron microscope (SEM) and X-ray emission spectrometry (EDX). The effects of rotation speed, mass of coagulant and settling time on the removal of colour, turbidity and COD were investigated using Box–Behnken design (BBD) of experiments. The results showed that NC could be effectively reduced the colour, turbidity and COD at the optimum conditions compared to CC. The operating cost were 1.73 US $/m3 and 0.56 US $/m3 for CC and NC, respectively. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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