Next Article in Journal
Experimental Study of Disc Fertilizer Spreader Performance
Previous Article in Journal
The Comparison of Density-Based Clustering Approach among Different Machine Learning Models on Paddy Rice Image Classification of Multispectral and Hyperspectral Image Data
Article

Organic Matter Composition and Phosphorus Speciation of Solid Waste from an African Catfish Recirculating Aquaculture System

1
Soil Science, Faculty of Agricultural and Environmental Science, University of Rostock, D-18051 Rostock, Germany
2
Department of Aquaculture and Sea-Ranching, Faculty of Agricultural and Environmental Science, University of Rostock, D-18051 Rostock, Germany
3
Synchrotron Light Research Institute, Muang District, 111 Moo 6 University Avenue, Nakhon Ratchasima 3000, Thailand
*
Author to whom correspondence should be addressed.
Agriculture 2020, 10(10), 466; https://doi.org/10.3390/agriculture10100466
Received: 11 September 2020 / Revised: 6 October 2020 / Accepted: 7 October 2020 / Published: 11 October 2020
(This article belongs to the Section Agricultural Systems and Management)
Recycling of phosphorus (P) from feed input in aquaculture systems gains increasing importance, especially relating to sustainable agriculture and food production. In order to find possible areas of application of African catfish solid waste, the purpose of this study was to characterize the elemental and organic matter composition and P speciation in the aquaculture fish waste. Pyrolysis-field ionization mass spectrometry (Py-FIMS) was used to investigate the composition of organic matter and P K-edge X-ray absorption near edge structure (XANES) spectroscopy to describe the occurring P-containing compounds in African catfish solid waste from an intensive recirculation aquaculture system (RAS). The solid fish waste was mainly composed of sterols, free fatty acids and alkylaromatics, as it is common for digestive systems of animals. Ingredients such as the phytosterol beta-sitosterin confirm plant-based feed ingredients and some recalcitrance against digestion in the African catfish gut. The P in the solid fish waste was exclusively bound as calcium-phosphates. These calcium-phosphate minerals as major constituents of African catfish waste may have beneficial effects when applied to soils, suggesting the use of this waste as possible soil amendment in the future. View Full-Text
Keywords: African catfish; RAS; Py-FIMS; XANES spectroscopy; aquaculture fish waste; soil amendment African catfish; RAS; Py-FIMS; XANES spectroscopy; aquaculture fish waste; soil amendment
Show Figures

Figure 1

MDPI and ACS Style

Prüter, J.; Strauch, S.M.; Wenzel, L.C.; Klysubun, W.; Palm, H.W.; Leinweber, P. Organic Matter Composition and Phosphorus Speciation of Solid Waste from an African Catfish Recirculating Aquaculture System. Agriculture 2020, 10, 466. https://doi.org/10.3390/agriculture10100466

AMA Style

Prüter J, Strauch SM, Wenzel LC, Klysubun W, Palm HW, Leinweber P. Organic Matter Composition and Phosphorus Speciation of Solid Waste from an African Catfish Recirculating Aquaculture System. Agriculture. 2020; 10(10):466. https://doi.org/10.3390/agriculture10100466

Chicago/Turabian Style

Prüter, Julia, Sebastian M. Strauch, Lisa C. Wenzel, Wantana Klysubun, Harry W. Palm, and Peter Leinweber. 2020. "Organic Matter Composition and Phosphorus Speciation of Solid Waste from an African Catfish Recirculating Aquaculture System" Agriculture 10, no. 10: 466. https://doi.org/10.3390/agriculture10100466

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop