Eco-physiological Impact of Industrial SWE Prepared From A Caustic-Chlorine Industry On A Fresh Water Fish and Its Eco-Toxicological Significance.

Ashok Kumar Panigrahi; PriyaDarshan

Eco-physiological Impact of Industrial SWE Prepared From A Caustic-Chlorine Industry On A Fresh Water Fish and Its Eco-Toxicological Significance.

Author(s)	Prof. Dr. Ashok Kumar Panigrahi, PriyaDarshan
Country	India
Abstract	Industrial solid waste and its leached chemicals cause significant damage to the environment and inhabiting flora and fauna. The solid waste collected from effluent canal, effluent storage pond and effluent treatment ponds were dumped near the Rushikulya river bank. During rainy season, the lechate and washings of the solid waste enter in to the river finally reach Bay of Bengal contaminating the aquatic environment. Hence, the present work was undertaken to study the impact of lechate chemicals on a fresh water fish. The lechate chemical was collected from different dumping sites and tested. A significant difference was noted. The solid waste was sampled, dried, powdered and a lechate chemical was prepared in the laboratory named as solid waste extract (SWE). It was observed that the SWE is almost identical with lechate chemicals collected from the dumping site. In the present study we have selected SWE as the test material. The SWE exposed fish appeared lethargic and the exposed fish showed imbalance in swimming after exposure to the SWE compared to control fish. Prolonged exposure to SWE led to blindness and body bending of the exposed fishes. Control fish remained clinically healthy throughout the experimental period. Significant depletion in respiration rate in exposed fish brain, liver, muscle and gill tissues when compared to control fish tissues was due to residual mercury accumulation in different tissues and its impact on respiratory metabolism. The residual mercury accumulation in fish tissues increased the body burden and impacted severely the respiratory metabolism which was reflected in depletion of whole body oxygen uptake and residual mercury accumulation in brain affected the nervous system leading to erratic swimming, nervous disorders and paralytic movements. In the present case the impact was very high and the behavioral changes were more acute and drastic confirming mercury poisoning in the affected areas at Ganjam. The depletion in AChE enzyme activity in contaminated fishes can be linked to residual mercury impact in fish tissues. Control fish remained clinically healthy throughout the experimental period without showing any signs of toxicity or contamination. The SWE is deadly toxic and can kill all the contaminated plants and animals including fish. Care should be taken and safe disposal of the solid waste originated from the industry. The solid waste should be treated to remove mercury before disposal into the surrounding environmental segments.
Keywords	Caustic-chlorine industry, SWE, mercury, fish, respiration, enzyme activity, ions
Field	Biology > Zoology
Published In	Volume 8, Issue 4, July-August 2026
Published On	2026-08-02

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Eco-physiological Impact of Industrial SWE Prepared From A Caustic-Chlorine Industry On A Fresh Water Fish and Its Eco-Toxicological Significance.

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