Record Details

<strong>Colour removal and biodegradability enhancement of biomethanated spent wash from distillery using wet oxidation treatment</strong>

Online Publishing @ NISCAIR

View Archive Info
 
 
Field Value
 
Authentication Code dc
 
Title Statement <strong>Colour removal and biodegradability enhancement of biomethanated spent wash from distillery using wet oxidation treatment</strong>
 
Added Entry - Uncontrolled Name Khatri, Inderjeet ; Indian Institute of Technology Bombay
Garg, Anurag ; Indian Institute of Technology Bombay
Department of Biotechnology (DBT), New Delhi for the project funded under Newton-Bhabha scheme
 
Uncontrolled Index Term Biomethanated spent wash; Carbon balance; Solids characterisation; Wet oxidation
 
Summary, etc. <p><span>In India, high strength spent wash (SW) produced from alcohol distilleries is preferably treated by biomethanation process. However, biomethanated  SW (BMSW) still contains intensified dark brown colour, high chemical oxygen demand (COD) and poor biodegradability which requires further treatment before disposal. Wet oxidation (WO) is considered an effective treatment for high strength non-biodegradable wastewaters (COD &gt; 10 g/L). Hence, the present study explored WO of BMSW (pH = 5.7, COD = 65.5 g/L, and total organic carbon (TOC) = 23.5 g/L) in a high pressure batch reactor (0.7 L capacity) at temperatures ranging from 160-220°C and oxygen pressure of 1.1 MPa. At 220°C temperature, TOC, COD and color removals of 39%, 59% and 90%, respectively, were observed after 3 h of reaction period. Meanwhile, biodegradability index (BI) was enhanced from 0.27 to 0.81. Carbon balance calculations showed that the oxidation reaction contribution in TOC removal was enhanced with increase in temperature (64 – 92% of total carbon removal). Fourier transform infrared (FTIR) analysis suggested the precipitation of carbonyl group and nitrogen containing compounds. During the reaction, volatile fatty acids (oxalic acid, malonic acid and acetic acid) formation was also confirmed in the treated wastewater.</span></p>
 
Publication, Distribution, Etc. Indian Journal of Chemical Technology (IJCT)
2021-03-03 15:29:50
 
Electronic Location and Access application/pdf
http://op.niscair.res.in/index.php/IJCT/article/view/29974
 
Data Source Entry Indian Journal of Chemical Technology (IJCT); ##issue.vol## 27, ##issue.no## 6 (2020): Indian Journal of Chemical Technology
 
Language Note en