Aisyatul Mardiyyah (2020) Aplikasi Kitosan Cangkang Kerang Kampak (Atrina Pectinata) Sebagai Koagulan Untuk Mengoptimalkan Kualitas Nitrat, Do Dan Bakteri Nitrobacter Sp. Pada Akuaponik Air Laut. Other thesis, UNIVERSITAS AIRLANGGA.

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	Text 2. SUMMARY.pdf Download (131kB)
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	Text 4. I PENDAHULUAN.pdf Download (122kB)
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Abstract

One of the shells that can be utilized is Atrina pectinata shell. Shellfish waste contains chitin which can be further utilized as a high-value product, namely chitosan. The amount of chitin content in the shells ranges from 14 - 35% (Sinardi et al., 2013). Chitosan has a good role in reducing environmental pollution, which is quite effective in the process of water purification (Renault et al., 2009). Aquaponics is a aquaculture techniques system that maintains water quality above a tolerance threshold for a certain period without interfering with fish growth combined with aquatic plant systems (Sagita et.al., 2014). The purpose of this study was to determine the ability of chitosan from Atrina pectinata shells as a koagulan that can optimize water quality and the activity of bacteria in aquaponic seawater. This research is an experimental study using a repeat experiment design (Repeat Measure) with 12 treatments and 4 times (0th, 5th, 10th, and 15th days) on 2 factors consisting of factor A (Body Fish, Seaweed, and Filters) and factor B (Chitosan concentration is 0 ppm, 10 ppm, 20 ppm, 30 ppm). The chitosan yield data obtained is 18%, that is 73 g out of 400 g of shells. The yield of each stage starting from depretionation, demineralization and deacetylation was 93.25%, 47.2% and 41.5% with the weight of the powder obtained is 373 g, 176 g and 73 g. The more concentrations of chitosan added are to increase DO values so as to increase the activity of the Nitrobacter bacteria so that they can convert ammonia to nitrites with levels that are not too high so that the aquaponic ecosystem is more optimal.

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