We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
REMOVAL OF AMMONIUM AND NITRATE IN WATER BY AN AQUATIC PLANT: WATER LETTUCE (Pistia stratiotes L.).
- Authors
THUAN, N.C.; CONG, N.V.
- Abstract
In rural areas of the Vietnamese Mekong delta, biogas digesters are applied as a potential solution to treat waste from pig rearing. Wastewater from biogas production typically contains a high level of nutrients, which requires appropriate techniques for removal. In order to contribute to making small-scale rural pig rearing in the Vietnamese Mekong Delta more sustainable, this study examines the uptake of inorganic nitrogen by water lettuce under lab scale conditions. Two treatments, including a control (No water lettuce) and with water lettuce (8 plants # 112.6±0.5 g) were conducted in triplicate using plastic tanks (57 x 38 x 30,5 cm³ ). Each replicate contained 50 L of solutions (nominal concentration: 5 mgN/L NH4-N + 5 mgN/L NO3-N). The experiment was set up in a wet lab for 28 d. The environmental parameters of solution and plant weight were monitored every 7 days. The results showed that water lettuce could absorb both ammonium and nitrate, but ammonium uptake was preferential. With approximately 112 g of fresh biomass, over 28 days this biomass was approximately 4 times greater and removed at about 0.26 g nitrogen. The results highlight that water lettuce can be used to remove nutrients from biogas wastewater without aeration.
- Subjects
MEKONG River Delta (Vietnam &; Cambodia); PLANT-water relationships; LETTUCE; BIOGAS production; NITROGEN in water; AQUATIC plants; RURAL geography
- Publication
Applied Ecology & Environmental Research, 2022, Vol 20, Issue 6, p5095
- ISSN
1589-1623
- Publication type
Article
- DOI
10.15666/aeer/2006_50955102