Topic
Bulrush
About: Bulrush is a research topic. Over the lifetime, 204 publications have been published within this topic receiving 5731 citations.
Papers published on a yearly basis
Papers
TL;DR: In this paper, the authors investigated the role of three higher aquatic plant types, Scirpus validus (bulrush), Phragmites communis (common reed) and Typha latifola (cattail), in the removal of nitrogen (via sequential nitrification-denitrification), BOD and TSS from primary municipal wastewaters.
535 citations
TL;DR: In this article, three commonly used free-surface marsh vegetation treatments (bulrush Scirpus spp., cattail Typha spp, and a mixed stand of macrophytes and grasses) were used in replicated macrocosms to determine nitrate removal rates.
365 citations
TL;DR: In inoculating axenic saltmarsh bulrush plants with bacteria isolated from the rhizosphere of plants collected from the field, these plants accumulated significantly more Se and Hg compared to axenic controls.
Abstract: The role of rhizosphere bacteria in facilitating Se and Hg accumulation in two wetland plants, saltmarsh bulrush (Scirpus robustus Pursh) and rabbitfoot grass (Polypogon monspeliensis (L.) Desf.), was studied. Ampicillin-amended plants (i.e., with inhibited rhizosphere bacteria) supplied with Na2SeO4 or HgCl2 had significantly lower concentrations of Se and Hg, respectively, in roots than plants without ampicillin. These results were confirmed by inoculating axenic saltmarsh bulrush plants with bacteria isolated from the rhizosphere of plants collected from the field; these plants accumulated significantly more Se and Hg compared to axenic controls. Therefore, rhizosphere bacteria can increase the efficiency of Se and Hg phytoremediation by promoting the accumulation of Se and Hg in tissues of wetland plants.
225 citations
TL;DR: A volunteer macrophyte, Potamogeton pusillus, is implicated as having contributed additional suspended particulate matter in surface water that subsequently reduced the pool of dissolved mercury while also providing an environment suitable for demethylation.
147 citations
TL;DR: P pH, oxidation reduction potential (ORP), and dissolved oxygen (DO) microprofiles for the lateral and main roots of the bulrush in a vertical flow constructed wetland fed with municipal wastewater were measured using microelectrode techniques.
Abstract: Microenvironmental studies regarding plant oxygen release in a wastewater environment are important to understand the principles of constructed wetlands for wastewater treatment. pH, oxidation reduction potential (ORP), and dissolved oxygen (DO) microprofiles for the lateral and main roots of the bulrush (Scirpus validus) in a vertical flow constructed wetland fed with municipal wastewater were measured using microelectrode techniques. pH was found to be low (6.91-6.98) near the lateral root surface, indicating possible nitrification or H(+) extrusion. The ORP at the lateral root surface was between +250 and +317 mV and gradually reached the bulk solution ORP (+14 to -54 mV) at a radial distance of approximately 4,750 microm. DO values at the lateral root surface varied from 0.64-2.04 mg L(-1) as bulk biochemical oxygen demand (BOD) changed from 24 to 1,267 mg L(-1). DO at the lateral root surface and the thickness of the oxygen layer around the root marginally increased with an increase in bulk BOD, while ORP at the lateral and main root surface decreased. pH and DO values did not change near the main root and had the bulk solution values. The results of this study provide insights into root-induced microenvironments and would be helpful for the quantification of the total amount of oxygen contributed by plants in constructed wetlands.
141 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2020 | 6 |
| 2019 | 1 |
| 2018 | 1 |
| 2017 | 8 |
| 2016 | 4 |
| 2015 | 4 |