Removal of nitrogenous and phosphorus compound from shrimp waste using seaweed, Gracilaria edulis

Khatoon, Helena and Togimin, Siti Rasidah and Banerjee, Sanjoy and Endut, Azizah (2013) Removal of nitrogenous and phosphorus compound from shrimp waste using seaweed, Gracilaria edulis. In: Conference of Environmental Science and Engineering, 29 Oct - 2 Nov 2013, Daegu, South Korea.

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2013 MAY 1 Bioremediation Abstract for CESE 2013.pdf
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The fast growing shrimp farming industry had cause degrading near shore water quality through nutrient enrichment. Shrimp effluent is absolutely high in nitrogen and phosphorus compound result from animal feaces, added fertilizer and uneaten food. These phenomena could create an eutrophication problem in coastal waters. The aim of this study is to evaluate the potential of locally available Gracilaria species (Gracilaria edulis) for reducing the nitrogenous and phosphorus compound from shrimp pond waste in a recirculating water system model. A set of tank with capacity 144L was set up to create a system by applying the gravity to flow the effluent. The treatment tank was added with 5kg/tank of seaweed while the control was left empty. Results showed that the Gracilaria edulis significantly (P<0.05) reduces the unionized ammonia and nitrite compound compared to the control (P<0.05). It was also found that the phosphorus and nitrate levels showed a fluctuation along the experimental period, but this value still maintain at the safe levels for the pond with lower than 0.1mg/L and was significantly lower than the control. The specific growth rate (SGR) of Gracilaria edulis showed an increase 1.56% from an initial value due to absorbing nitrogenous and phosphorus compounds as a nutrient for their growth. Since Gracilaria edulis maintained low level of unionized ammonia and nitrite, it can be used commercially in the future to enhancing aquaculture production.

Item Type: Conference or Workshop Item (Paper)
Subjects: Q Science > Q Science (General)
S Agriculture > S Agriculture (General)
Faculty / Institute: East Coast Environmental Research Institute (ESERI)
Depositing User: AP DR AZIZAH ENDUT
Date Deposited: 01 Nov 2015 03:12
Last Modified: 01 Nov 2015 03:12

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