Article Per Year (5 Year)
p-Index From 2021 - 2026
0.444
P-Index
This Author published in this journals
All Journal BIOTROPIA - The Southeast Asian Journal of Tropical Biology
Nguyen, Chung Tan
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Veterinary

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
REMOVAL EFFICIENCY OF NITROGEN, PHOSPHORUS AND HEAVY METALS ASSOCIATED WITH SWINE WASTEWATER USING AQUATIC MACROPHYTES Nguyen, Chung Tan; Nguyen, Ha Van
BIOTROPIA Vol. 30 No. 2 (2023): BIOTROPIA Vol. 30 No. 2 August 2023
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2023.30.2.1038

Abstract

Wastes from breeding farms have globally increased greenhouse gas emissions and caused serious pollution of aquatic environments. Biogas treatment polymer bags could significantly reduce organic compounds; however, they could not effectively treat other pollutants in animal wastewater. The objective of this study was to assess the removal efficiency of salinity and pollutants associated with pig wastewater using aquatic macrophytes. Four macrophytes, namely Acrotichum aureum, Eleocharis dulcis, Typha domengensis, and Limnophyton obtusifolium, and a soil control without vegetation were randomly assigned into fifteen mesocosms (1.2 × 0.7 × 0.6 m) with three replicates for each treatment. Pig wastewater was continuously filled into the input chambers of the mesocosms every three days at a volume of 5 liters. Water samples were collected from the output chambers at 60 and 120 days after treatment, while soil and vegetation samples were collected at the beginning and at the end of the experiment. The results showed that E. dulcis, T. domengensis, and L. obtusifolium were dominant in the removal of N, P, Cu, Zn, and suspended solids; E. dulcis and T. domengensis significantly increased dissolved oxygen; whereas the treatment with L. obtusifolium showed the best efficiency in salt-ion removal. Pollutants of N, P, Cu, and Zn tended to accumulate more in macrophyte roots than in their leaves. Accumulation of N, P, Cu, and Zn in L. obtusifolium biomass was the highest compared with other treatments. From these findings, it is suggested that a combination of three aquatic macrophytes, including E. dulcis, T. domengensis, and L. obtusifolium, could establish a constructed wetland system to directly treat pollutants in livestock wastewater.
DETERMINING AN APPROPRIATE AGE FOR ESTIMATING SITE INDEX OF Acacia HYBRID PLANTATIONS IN SOUTHEASTERN VIETNAM Nguyen, Chung Tan; Tran, Ngoan Thi; Nguyen, Them Van
BIOTROPIA Vol. 28 No. 1 (2021): BIOTROPIA Vol. 28 No. 1 April 2021
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (861.548 KB) | DOI: 10.11598/btb.0.0.0.1051

Abstract

This article introduces the research results of a site index classification for Acacia hybrid plantations in Dong Nai Province. The objectives of this study were to (i) determine a baseline age of Acacia hybrid plantations to establish their site indices and (ii) develop site index curves for Acacia hybrid plantations. Three standard plots were established for each age group of 1-10 years with 111 trees per plot; 108 trees were measured for the estimation of growth criteria. Three trees were used for tree truncation, and truncated trees did not count for the estimation of tree growth criteria. In this study, the site index (SI) for Acacia hybrid plantations was divided into three levels according to the total height of the dominant trees. The heights collected from 108 trees were used to build the functions of the SI, and three truncated trees were used to examine the possibilities of the functions of SI. Research results showed that the appropriate baseline age of Acacia hybrid plantations at Dong Nai Province is 8 years. The site indices of hybrid plantations were divided into three site levels of I, II, and III, corresponding to heights of 24, 20 and 16 m, respectively. To improve the effectiveness of Acacia hybrid plantation businesses, owners should focus on growing plantations at site index levels of I or II.
Co-Authors Nguyen, Ha Van Nguyen, Them Van Tran, Ngoan Thi