Papers by Gopalakrishna Gaonkar
International Journal of Experimental Research and Review
Stainless steel and aluminium electrode was utilized inside batch electro chemicals coagulations ... more Stainless steel and aluminium electrode was utilized inside batch electro chemicals coagulations (BECCs) using current densities (CD) for the treatment of fruit juice processing wastewater (FJPW). During ECC, ~65-70% color removal and COD removal of ~55-60% was observed for CD 260 A/m2 at 75 min electrolysis time for both 4SS (four stainless steel) and 4Al (four aluminium) electrodes. In general, 4SS and 4Al electrodes had less influence on FJPW for all CDs. Therefore, to improve the quality of treatment of leftover color and COD by BECC treatment, the batch adsorption studies were conducted as secondary treatment by synthesis of CuO nanoparticles using Carica papaya, Centella asiatica (CA), Ocimum sanctum and 1:1:1 mixture of leaves. An effect of several operating parameters like adsorbent dose, pH, and contact duration on leftover color and COD removal was studied for optimal conditions to treat FJPW. The results showed that ~70% color and ~65% Chemical Oxygen Demand elimination a...
The absence of water coming about because of monetary and populace development is viewed as perha... more The absence of water coming about because of monetary and populace development is viewed as perhaps the main dread for mankind and a danger for supportable turn of events. As a consequence of natural sources such as household and agricultural waste, as well as industrial activities, many water supplies are now polluted. The public's concern about the environmental consequences of wastewater pollution has grown. The problem of fresh water scarcity affects people all over the globe. The primary goal of the wastewater treatment process is to eliminate various polluting load constituents such as solids, organic carbon, nutrients, inorganic salts, metals, pathogens, and so on effective wastewater treatment and disposal are critical for both environmental and public health reasons, and wastewater management's primary aim is to protect the environment while also addressing public health and socioeconomic issues. The increased population, combined with numerous human activities, has...
Removal of cod from real textile wastewater using three low-cost adsorbents - its kinetic models and adsorption isotherms
International Journal of Environmental Analytical Chemistry
Batch Electrochemical Treatment of Raw Pulp and Paper Mill Wastewater Using Electrode Combinations
ECS Transactions
SS and Cu electrodes were used in the electrochemical coagulation to treat pulp and paper mill wa... more SS and Cu electrodes were used in the electrochemical coagulation to treat pulp and paper mill wastewater using 4SS and 3SS 1Cu electrodes by applying cell voltages 12 – 24 V. Optimal cell voltage 18V showed COD removal of 89.64% for 4SS electrode and 84.74% for 3SS 1Cu electrode with simultaneous color removal of 99% and 90%. Other control factors used for optimal operation are sludge volume index (SVI), filterability, etc. SVI values were <100 mL/g for 4SS electrodes. The filtration characteristics of the ECC-treated sludge were established to determine the specific cake resistance (α) and the resistance of the filter medium (Rm). Lower α and Rm values for 4SS and 3SS-1Cu electrodes were found at 60 min ET. Proximate and ultimate analyses showed that 4SS and 3SS-1Cu sludge could be used as additive as well as adsorbent material for treating low strength wastewater.
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Papers by Gopalakrishna Gaonkar