Harnessing fertilizer potential of human urine in a mesocosm system: a novel test case for linking the loop between sanitation and aquaculture

Sukanta Rana, Jayanta Kumar Biswas, Jörg Rinklebe, Erik Meers, Nanthi Bolan

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Human urine (HU) is a biogenic fertilizer which has raised immense interest owing to its capacity of combining sanitation and nutrient recovery. In search of an alternative organic fertilizer for fish culture, the nutrient potential of HU was evaluated. Fries of Indian carps and larvae of freshwater prawn were reared for 120 days under six conditions: (a) aerated and (b) non-aerated fresh HU (0.01%), (c) cattle manure (CM; 1.8 kg tank−1), mixed treatment with CM and HU under (d) iso-phosphorus and (e) iso-nitrogenous condition and (f) control. Monitoring of water quality and biological parameters revealed that total fish yield was the highest in CM (621.5 g tank−1) followed by mixed treatments under iso-nitrogenous (428 g tank−1) and iso-phosphorus (333 g tank−1) conditions, aerated HU (321 g tank−1) and HU (319 g tank−1). The gross primary productivity (GPP) in HU was satisfactory (601.8 mg C m−2 h−1) and superior to all but CM treatment. The abundance of heterotrophic bacteria (HB) was highest in CM and lowest in HU. Both GPP and HB population were correlated positively with fish yield per tank. Although pH in all treatments remained high (pH 8.4–8.9), no ammonia toxicity was observed. No E. coli infestation in any fish muscle was encountered. The concentrations of cadmium and lead in fish muscle were within respective safe level. The study established that high fertilizer potential of HU could be exploited as an alternative organic fertilizer or as a candidate to be blended with cattle manure.

Original languageEnglish
Pages (from-to)1545-1561
Number of pages17
JournalEnvironmental Geochemistry and Health
Volume39
Issue number6
DOIs
Publication statusPublished - 1 Dec 2017
Externally publishedYes

Fingerprint

Dive into the research topics of 'Harnessing fertilizer potential of human urine in a mesocosm system: a novel test case for linking the loop between sanitation and aquaculture'. Together they form a unique fingerprint.

Cite this