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Laboratory scale experiments were performed in a non-continuous batch reactor system with 0.8 to 41.2<space>l with domestic sewage exposed to constant light intensity, temperature and humidity. The contribution of duckweed (L. gibba) to N and P removal in duckweed-covered sewage lagoons (DSL) was studied at NH +4 concentration of 25-96<space>mg/l with 10, 30, 70 and 95<space>cm...
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