Please use this identifier to cite or link to this item:
https://hdl.handle.net/10356/106317
Title: | Application of hydroponic systems for the treatment of source-separated human urine | Authors: | Yang, Linyan Giannis, Apostolos Chang, Victor Wei-Chung Liu, Bianxia Zhang, Jiefeng Wang, Jing-Yuan |
Keywords: | DRNTU::Engineering::Environmental engineering::Waste management | Issue Date: | 2015 | Source: | Yang, L., Giannis, A., Chang, V. W.-C., Liu, B., Zhang, J., & Wang, J.-Y. (2015). Application of hydroponic systems for the treatment of source-separated human urine. Ecological engineering, 81, 182-191. | Series/Report no.: | Ecological engineering | Abstract: | Hydroponic systems are widely used for the treatment of nutrient rich wastewaters. In this study, a hydroponic system was applied as the final treatment stage of source-separated human urine after urea hydrolysis, induced-struvite precipitation and ammonia stripping in tropical conditions (Singapore). The results showed that water spinach grew efficiently in the pretreated urine with 1:50 dilution ratio at the growth rate 0.68 cm/d, leaf number 2.27 pieces/d, shoot dry mass 0.33 g, water content 93.86%, and nitrogen and potassium conversion rate 0.46 and 0.51 mg/mg, respectively. This hydroponic system removed 58–66% chemical oxygen demand (COD), 41–49% total nitrogen (TN) and up to 47% total suspended solid (TSS), indicating sufficient urine stream polishing. Nitrification was observed when COD reduced by 60%, possibly because of oxygen competition between nitrobacteria for nitrification and microbes for COD degradation. The kinetic study revealed that zero-order model provided best fitting for COD and ammonia-nitrogen (NH4+-N) removal, while second-order model was more suitable for TN removal. | URI: | https://hdl.handle.net/10356/106317 http://hdl.handle.net/10220/26374 |
ISSN: | 0925-8574 | DOI: | 10.1016/j.ecoleng.2015.04.013 | Schools: | School of Civil and Environmental Engineering Interdisciplinary Graduate School (IGS) |
Research Centres: | Residues and Resource Reclamation Centre Nanyang Environment and Water Research Institute |
Rights: | © 2015 Elsevier. This is the author created version of a work that has been peer reviewed and accepted for publication by Ecological Engineering, Elsevier. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1016/j.ecoleng.2015.04.013]. | Fulltext Permission: | open | Fulltext Availability: | With Fulltext |
Appears in Collections: | CEE Journal Articles NEWRI Journal Articles |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Application of hydroponic systems for the treatment of source-separated human urine.pdf | 432.19 kB | Adobe PDF | View/Open |
SCOPUSTM
Citations
10
33
Updated on Mar 11, 2024
Web of ScienceTM
Citations
10
28
Updated on Oct 25, 2023
Page view(s) 20
654
Updated on Mar 18, 2024
Download(s) 5
623
Updated on Mar 18, 2024
Google ScholarTM
Check
Altmetric
Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.