Reports

Measurements and utilization of slag

Published:

27/09/2017

Authors:

Ragnheiður Sveinþórsdóttir, Ásbjörn Jónsson, Muhammad Rizal Fahlivi

Supported by:

Ministry of Industry and Innovation

Measurements and utilization of slag

In the project, cod caught off the south coast of Iceland was gutted ashore. The fish was measured and weighed before and after gutting so that its slaughter ratio could be calculated over the year. Each organ was also weighed to see the quantity and proportion of each organ in the cod slug. Following these measurements, data are available from independent parties that show the slaughter rate of cod over two seasons. With the aim of increasing the value of landed catch, the utilization of sludge was looked at and experiments were made where fertilizer was made from the sludge in three different ways and the types of fertilizer were tested and compared. In addition, such treatment was compared with plants that were only watered with water and plants that were watered with synthetic plant fertilizers that are on the market today.

In this project cod was caught on the south coast of Iceland and gutted at shore. The fish was measured and weighed before and after gutting to calculate it's rate of guts for the whole year. Also every organ was weighed to see the guts combination. With the aim to increase the value of landed material experiments were made where fertilizer was created in three ways, it was tested and compared with each other and plants that were only irrigated with water and plants irrigated with plant fertilizer that are on market today.

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Reports

Slegist um slógið - Nýtil á slógi frá fiskvinnslum / Utilization of offal from the fish industry

Published:

25/02/2014

Authors:

Ásbjörn Jónsson, Bjarni H. Ásbjörnsson, Sigurjón Arason

Supported by:

AVS Fisheries Research Fund - R 201-10

Contact

Sigurjón Arason

Chief Engineer

sigurjon.arason@matis.is

Slegist um slógið - Nýtil á slógi frá fiskvinnslum / Utilization of offal from the fish industry

The main goal of the project was to utilize in a profitable way the catch that comes ashore in Þorlákshöfn with catch that is not gutted at sea. The aim was to establish a start-up company, which emphasizes the utilization of the sludge for fertilizer production, along with job creation and foreign exchange savings. The study revealed, among other things, that skyrmysa can be used to acidify the slag in part together with formic acid. Tests on the use of fish manure as fertilizer on vegetated land and cultivated fields showed that the growth of grass and vegetation cover increased considerably.

The aim of this project was to utilize fish viscera from Þorlákshöfn in a profitable way. The aim was the establishment of entrepreneurs, which emphasizes the use of fish viscera to produce fertilizer, along with job creation and saving of foreign exchange. The results included the use of whey along with formic acid for acidification of the viscera. The results of using fish viscera on barren land and agricultural headlands showed that the growth of grass and vegetation cover increased considerably.

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