Conference Papers
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Item A Study on Aquaculture Waste Leachate Transport Through Soil(Springer Science and Business Media Deutschland GmbH, 2023) Thotakura, T.V.; Sunil, B.M.; Chaudhary, B.Aquaculture waste is one of the emerging wastes due to rapid expansion and intensification of aquaculture practices and less attention has been paid for environmental concern as compared with municipal waste. Moreover, in the delta region of Andhra Pradesh, nearly one-third of the land cover is occupied by the aquaculture ponds. Major contaminants in aquaculture ponds are rich in nutrients, chemicals, disinfectants, feed residues, metals, minerals, and nitrates. This paper presents the aquaculture waste leachate and clay interaction. Our findings revealed that ammonia interaction with the clay particles significantly influence the hydraulic behavior of the clays. Further, long-term clay-leachate interactions lead to negative environmental consequences. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.Item Influence of Aquaculture Sludge on Volume Change Behavior of Expansive Clays(Springer Science and Business Media Deutschland GmbH, 2023) Thotakura, T.V.; Sunil, B.M.; Chaudhary, B.Aquaculture waste sludge (AWS) from the aquaculture ponds in the delta region of Andhra Pradesh is most popular. Intensive aquaculture practice involves usage of higher dosages of minerals and chemicals in the aquaculture ponds. Further, due to the intensive activity, there is a formation of AWS at the bottom of the ponds. In this study, experimental investigation was carried with various concentrations of ASW sludge was blended with the expansive clays. A summary of one-dimensional swell-consolidation studies on expansive clays blended with AWS is presented. Rate of heave, swell potential, and swelling pressure significantly decreased with the increase in ASW content. The paper also explores microstructural behavior of the expansive clays blended with AWS. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.Item Impact of Aquaculture Solid Waste on Environment in the Delta Region of Andhra Pradesh: A Case Study(Springer Science and Business Media Deutschland GmbH, 2023) Thotakura, T.V.; Sunil, B.M.; Chaudhary, B.Aquaculture solid waste (ASW) from the aquaculture ponds is emerging waste which impacts on the environment due to intensive culture practices. In intensive aquaculture ponds, 45–65% of the dry weight of waste (shells, fins, and bones), surplus feed, chemicals, and minerals. This has led to a decline in the quality of the water used for aquaculture, environmental pollution, the occurrence of aquatic diseases, and even ecological imbalance, which has become a significant concern. This study presents the leachate characteristics and groundwater characteristics of the nearby dump sites. Field surveys were carried to know the source and disposal of ASW and to identify the lacunae of practice. Based on the leachate characteristics, it has been suggested that proper management of ASW is needed. This study also explores the Indian ASW and its impact on environment. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.