Abstract:
:Five bacteria isolated from earthworm viscera and identified as Brevibacillus agri, Bacillus cereus, Bacillus licheniformis, and Brevibacillus parabrevis by 16S rRNA sequencing were employed in the conversion of fish wastes generated from a restaurant specializing in sliced raw fish into fertilizer. Within 120h after inoculation of autoclaved fish waste with 5.15 x 10(5) CFU ml(-1) mixed isolates, the amount of dry sludge decreased from 29.4 to 0.2g, the pH changed from 7.05 to 5.70, and the cell number reached 6.45 x 10(5) CFU ml(-1). Analyses of an 84-h culture of inoculated fish waste indicated low phytotoxicity in a seed germination test, an amino acid content of 5.71 g 100 g(-1), a low concentration of heavy metals (Pb, As, Cd, Hg, Cr, Cu, Ni and Zn), and a N/P/K level of 2.33%. Therefore the converted fish waste has the potential for use as liquid fertilizer, although the low NPK level is a concern. This is the first demonstration of the reutilization of fish wastes as a liquid fertilizer.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Kim JK,Dao VT,Kong IS,Lee HHdoi
10.1016/j.biortech.2010.02.001subject
Has Abstractpub_date
2010-07-01 00:00:00pages
5131-6issue
14eissn
0960-8524issn
1873-2976pii
S0960-8524(10)00272-5journal_volume
101pub_type
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