Electrochemical Pretreatment of Distillery Wastewater Using Aluminum Electrode

Electrochemical (EC) oxidation of distillery wastewater with low (BOD5/COD) ratio was investigated using aluminum plates as electrodes. The effects of operating parameters such as pH, electrolysis duration, and current density on COD removal were studied. At a current density of 0.03 A cm-2 and at pH 3, the COD removal was found to be 72.3%. The BOD5/COD ratio increased from 0.15 to 0.68 for an optimum of 120-min electrolysis duration indicating improvement of biodegradability of wastewater. The maximum anodic efficiency observed was 21.58 kg COD h-1 A-1 m-2, and the minimum energy consumption observed was 0.084 kWh kg-1 COD. The kinetic study results revealed that reaction rate (k) decreased from 0.011 to 0.0063 min-1 with increase in pH from 3 to 9 while the k value increased from 0.0035 to 0.0102 min-1 with increase in current density from 0.01 to 0.03 A cm-2. This study showed that the COD reduction is more influenced by the current density. The linear and the nonlinear regression models reveal that the COD reduction is influenced by the applied current density

Study of the Electrochemical Process for Distillery Wastewater Treatment

In this work the electrochemical (EC) process is used as a pretreatment step for the treatment of distillery wastewater using iron plates as electrodes in a batch EC reactor. The maximum COD removal of 56% was achieved at a current density of 0.10 A cm-2 with 140 min of electrolysis time at wastewater pH of 3. The BOD to COD ratio increased from 0.15 to 0.52 indicating improvement in wastewater biodegradability. The maximum anodic efficiency observed was 2.68 kg COD h-1A-1m-2 with a corresponding energy consumption of 0.71 kWh kg-1 COD

Improvement of Bod5/Cod Ratio Inpre-Treated Distillery Waste Water by Electrochemical Treatment Method

Electrochemical oxidation of low (BOD5/COD) ratio post-methanation distillery wastewater was investigated. The effects of operating parameters like pH, electrolysis duration and current density on COD removal were studied. At a current density of 0.03 Ampere/cm2 and at pH 3 the COD removal was found to be 72%. The BOD5/COD ratio of pretreated distillery wastewater was 0.145 and increased to 0.686 for an optimum of 120 minutes electrolysis duration indicating improvement of biodegradability of wastewater. The TOC reduction is 8.77% at 180 minutes of electrolysis duration. The maximum anodic efficiency observed was 21.58 kg COD h-1A-1m-2 and the minimum energy consumption observed was 84.16 wh kg-1 COD. The kinetic study reveals that reaction rate (k) decreases with increase in pH and increases with increase in current density

Chromium removal from industrial wastewater

Heavy metals are continuously released into the aquatic environment in various ways and adversely affect the ecosystem. Thus, the removal of heavy metal is of primary importance. A variety of traditional and advance techniques are available. Adsorbent is one among the many techniques. In this study, locally available low cost adsorbent (Pongamia Pinnata Shell) is used in place of costly activated charcoal in order to evolve cheap adsorption technique for removal of Hexavalen Chromium from industrial wastewater. Laboratory studies were conducted to delineate the effect of parameters on uptake of Hexavalent Chromium and the kinetics of adsoprtion of cr+6 removal. Parameters evaluated include, pH, size of adsorbent, time of contact and initial adsorbate concentration. Equilibrium studies indicate that the process obeyed Langmuir isotherm. However, Freudlich isotherm was used to predict the ultimate sorption capacity. The results indicate that the pongamia pinnata shell can be very effectively, efficiently and economically used to remove Cr +6 from the industrial wastewaters in avidic range. (pH 2.0

Investigation of the electrochemical treatment for distillery wastewater.

The treatability study of distillery wastewater by electrochemical (EC) oxidation technique as pretreatment has been carried out. Batch experiments were conducted using stainless steel plates as electrodes to assess the effects of operating parameters such as pH, electrolysis duration (ED) and current density (CD). The EC treatment removed 58 COD at current density 0.12 A cm(-2) and at wastewater pH 3 with 120 min of ED. The BOD to COD ratio increased from 0.25 to 0.76 indicating considerable improvement in wastewater biodegradability. The maximum anodic efficiency and minimum energy consumption observed were 7.44 kg COD h(-1) A(-1) m(-2) and 0.19 kWh kg(-1) COD respectively

First report of leaf blight of Bakul (Mimusops Elengi Linn) caused by Pestalotiopsis Clavispora (G.F. Atk.) Steyaert in India

First Report of Leaf Blight of Bakul (Mimusops Elengi Linn) Caused by Pestalotiopsis Clavispora (G.F. Atk.) Steyaert in India Pestalotiopsis clavispora (G.F. Atk.) Steyaert was recorded for the first time on Mimusops elengi trees in the University of Mysore campus during 2015-2016. The fungus was isolated from the wilted plant parts and subsequent re-inoculation of the same to healthy plants and its pathogenicity confirmed. Pathogenicity tests showed that Pestalotiopsis clavispora could infect M. elengi, which developed the same symptoms under artificial inoculation conditions to that observed in the field. The fungus was identified based on morphological and culture characteristics as Pestalotiopsis clavispora. Identifications were confirmed using comparisons of DNA sequences of internal transcribed spacers (ITS) regions 1 and 4. This is the first report of Mimusops elengi leaf blight disease caused by P. clavispora