Biomass potential and effects of drying methods on chemical characteristics of Ulva seaweed for biofertilizer production
Vol. 134 No. 3B (2025), Original Article
Vol. 134 No. 3B (2025)

Biomass potential and effects of drying methods on chemical characteristics of Ulva seaweed for biofertilizer production

Original Article
https://doi.org/10.26459/hueunijard.v134i3B.7781
Published 2025-06-30
Duong Thanh Thuy
University of Agriculture and Forestry, Hue University, 102 Phung Hung St., Hue, Vietnam
Tran Thi Trieu Ha
University of Agriculture and Forestry, Hue University, 102 Phung Hung St., Hue, Vietnam
Nguyen Thi Thuy Hang
University of Agriculture and Forestry, Hue University, 102 Phung Hung St., Hue, Vietnam
Ho Nhat Phong
University of Agriculture and Forestry, Hue University, 102 Phung Hung St., Hue, Vietnam
Ho Sy Vuong
University of Agriculture and Forestry, Hue University, 102 Phung Hung St., Hue, Vietnam
Nguyen Ho Lam
Institute of Socio-Economic Development, Hue University, 07 Ha Noi St., Hue, Vietnam
PDF (Vietnamese)

Keywords

Huế
phân bón sinh học
rong bún
sấy
tính chất hóa học biofertilizer
chemical properties
drying
green seaweed
Hue city

Abstract

The green macroalgae (Ulva spp.) are commonly found in aquaculture ponds and intertidal zone along the coast of Hue City, Vietnam. The excessive growth of Ulva seaweeds can lead to "green tides," which negatively impact the environment and aquaculture activities. This study evaluated the biomass potential of Ulva as a raw material for biofertilizer production and examined the effects of drying methods on its chemical properties. Results identified two naturally occurring Ulva species in Hue, rich in organic compounds and essential nutrients (N, P, K), making them well-suited for biofertilizer applications. Moisture reduction through drying is essential for preserving and optimizing bioactive compounds' extraction. Forced-air drying at 50°C was determined to be the optimal method, ensuring the retention of nitrogen (N), phosphorus (P), and potassium (K) levels that meet the requirements for biofertilizer production.

https://doi.org/10.26459/hueunijard.v134i3B.7781
PDF (Vietnamese)

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