Publication: Tropical plants performance in urban runoff treatment using bioretention system
| datacite.subject.fos | oecd::Engineering and technology::Civil engineering::Civil engineering | |
| dc.contributor.author | Poovarasu Jhonson | |
| dc.date.accessioned | 2025-05-19T03:51:44Z | |
| dc.date.available | 2025-05-19T03:51:44Z | |
| dc.date.issued | 2023-06-01 | |
| dc.description.abstract | Bioretention systems are among the most popular stormwater best management practices (BMPs) for urban runoff treatment. Studies on the plant performance using bioretention systems have been conducted, especially in developed countries with a temperate climate, such as the United States and Australia. The objectives of this research is to examine the performance and efficiency of tropical plants in removing the pollutants from the runoff and to determine the optimum hydraulic retention time for the plant to achieve the best efficiency in bioretention system. This study was divided into 2 phases, Phase 1 involved urban runoff characterization whereas Phase 2 covers plant mesocosm study. Phase 2 was further divided into 2 (Phase 2a and Phase 2b); Phase 2a focuses on the performance of tropical plants in treating urban runoff polluted with greywater using bioretention system and subsequently five best plant species were chosen to be used in bioretention applications. Phase 2b study focuses on the performance of bioretention system under different hydraulic retention time (HRT) under tropical climate. The same plants were tested under greenhouse environment with three different HRTs. Ten different tropical plant species were triplicated and planted in 30 mesocosms with two control mesocosms without vegetation. One-way ANOVA was used to analyse the performance of plants, which were then ranked based on their performance in removing pollutants using the total score obtained for each water quality tests for Phase 2a, whereas for Phase 2b one-way ANOVA together with Tukey HSD test was used to study the significant difference between different HRT and plant species in removing pollutants. For Phase 2a, results showed that vetiver topped the table with 86.4% of total nitrogen (TN) removal, 93.5% of total phosphorus (TP) removal, 89.8% of biological oxygen demand (BOD) removal, 90% of total suspended solids (TSS) removal and 92.5% of chemical oxygen demand (COD) removal followed by blue porterweed, hibiscus, golden trumpet and tall sedge. As for Phase 2b, results showed that 48 hours of HRT had better influence in COD, TN and TSS removal (95.4%, 93.1% and 87.3% respectively) using vegetated bioretention system, unlike TP where its removal was at its best in 24 hours of HRT. 48 hours of HRT is viable and ideal to be practiced in bioretention system. This research concluded that vetiver, blue porterweed, hibiscus, golden trumpet and tall sedge are suitable to be used in bioretention system alongside with 48 hours of hydraulic retention time to get the best out of bioretention system in tropical region. | |
| dc.identifier.uri | https://erepo.usm.my/handle/123456789/21704 | |
| dc.language.iso | en | |
| dc.title | Tropical plants performance in urban runoff treatment using bioretention system | |
| dc.type | Resource Types::text::thesis::master thesis | |
| dspace.entity.type | Publication | |
| oairecerif.author.affiliation | Universiti Sains Malaysia |