Abstract
In this study, fly ash (FA) was derived from extracted sugarcane bagasse solid waste (ESBSW) and chemically modified to apply as an adsorbent. Impact of activated FA particles (200 and 250 µm) and adsorbent bed height (4, 6 and 8 mm) on pollutant removal efficiency was evaluated. ESBSW was combusted in laboratory-scale gasifier operated at 1000 °C for 1 h. The black solid residue was sieved to obtain the desired particle size followed by activation with 10% and 15% sulfuric acid. Wastewater samples collected from the drainage site of BUITEMS were analyzed and treated with the prepared adsorbent. ESBSW-FA 250 activated with 15% H 2 SO 4 with 8 mm bed height showed high efficiency. Where, 94.37%, 95.1% and 63.5% removal efficiency of chemical oxygen demand (COD), total solids (TS) and turbidity was attained, respectively. The pH of treated water was neutral. ESBSW has shown great potential to be used as a precursor for valuable byproducts. It's recycling for adsorbent preparation will economically and environmentally benefit the sugar industry.
Highlights
Abstract-- In this study, fly ash (FA) was derived from extracted sugarcane bagasse solid waste (ESBSW) and chemically modified to apply as an adsorbent
Fly ash produced along char is separated and have profound application as a supporting agent for concrete materials and as an adsorbent [6]
The moisture in dried ESBSW was found below 9%
Summary
Water pollution caused due to hazardous substances entails a high degree of damage to the ecosystem [1]. The demand for fresh or cleaned water is increasing day by day to perform daily life activities. To overcome this challenge, waste effluent streams must be treated by suitable technique before their discharging and can be recycled for a variety of applications i.e. gardening [3]. Char and fly ash are produced as a byproduct during the thermal conversion of coal, lignocellulosic or algal biomass. Their properties may differ owing to the material characteristics, pretreatment and thermal process conditions [7]. The samples were named as ESBSW-FA 200 and ESBSW-FA 250
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