Water pollution caused by excessive nutrient and biological invasion is increasingly widespread in China, which can lead to problems with drinking water as well as serious damage to the ecosystem if not be properly treated. Aquatic plant restoration (phytoremediation) has become a promising and increasingly popular solution. In this study, eight native species of low-temperature-tolerant aquatic macrophytes were chosen to construct three combinations of aquatic macrophytes to study their purification efficiency on eutrophic water in large open tanks during autumn in Guangzhou City. The total nitrogen (TN) removal rates of group A ( + + + ), group B ( + + + ), and group C () were 79.10%, 46.39%, and 67.46%, respectively. The total phosphorus (TP) removal rates were 89.39%, 88.37%, and 91.96% in groups A, B, and C, respectively, while the chemical oxygen demand (COD) removal rates were 93.91%, 96.48%, and 92.78%, respectively. In the control group (CK), the removal rates of TN, TP, and COD were 70.42%, 86.59%, and 87.94%, respectively. The overall removal rates of TN, TP, and COD in the plant groups were only slightly higher than that in CK group, which did not show a significant advantage. This may be related to the leaf decay of some aquatic plants during the experiment, whereby the decay of was the most obvious. The results suggest that a proper amount of plant residue will not lead to a significant deterioration of water quality.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8201349 | PMC |
| http://dx.doi.org/10.3390/ijerph18116162 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Environmental drivers of monomethylmercury photodegradation along the land-to-ocean aquatic continuum.
Environ Sci Process Impacts
January 2025
Department of Environmental Science, Stockholm University, Sweden.
In surface waters, photodegradation is a major abiotic removal pathway of the neurotoxin monomethylmercury (MMHg), acting as a key control on the amounts of MMHg available for biological uptake. Different environmental factors can alter the rate of MMHg photodegradation. However, our understanding of how MMHg photodegradation pathways in complex matrixes along the land-to-ocean aquatic continuum respond to changes in salinity, dissolved organic carbon (DOC) concentration and dissolved organic matter (DOM) composition is incomplete.
View Article and Find Full Text PDFEffect of temperature and CO concentration on biological nutrient removal from tertiary municipal wastewater using microalgae .
Biotechnol Notes
December 2024
Department of Chemical Engineering, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia.
This study investigates the potential of phototrophic microalgae, specifically Chlorella protothecoides, for biological wastewater treatment, with a focus on the effects of air temperature and CO concentration on nutrient removal from tertiary municipal wastewater. Utilizing both the Monod and Arrhenius kinetic models, the research examines how temperature and nutrient availability influence microalgal growth and nutrient removal. The study finds that optimal biomass productivity occurs at 25 °C, with growth slowing at higher temperatures (30 °C, 40 °C, and 45 °C).
View Article and Find Full Text PDFPediatric Bone Sarcoma Biopsy Tract Excision: Is it Safe to Resect Separately?
J Pediatr Orthop
January 2025
Department of Orthopaedic Surgery, Nationwide Children's Hospital.
Background: Biopsy is an essential part of proper diagnostic workup in pediatric bone sarcomas impacting surgical planning, chemotherapeutic treatments, and prognostic determination. Two main biopsy techniques are currently used: closed biopsy (core needle or fine needle aspiration) and open biopsy. Historical oncologic teaching is for resection of the biopsy tract with the tumor specimen due to the theoretical risk for biopsy tract tumor contamination; however, this can restrict surgical planning and increase morbidity.
View Article and Find Full Text PDFDynamic Control of Weight-Update Linearity in Magneto-Ionic Synapses.
Nano Lett
January 2025
Centre de Nanosciences et de Nanotechnologies, CNRS, Université Paris-Saclay, 91120 Palaiseau, France.
Multifunctional hardware technologies for neuromorphic computing are essential for replicating the complexity of biological neural systems, thereby improving the performance of artificial synapses and neurons. Integrating ionic and spintronic technologies offers new degrees of freedom to modulate synaptic potentiation and depression, introducing novel magnetic functionalities alongside the established ionic analogue behavior. We demonstrate that magneto-ionic devices can perform as synaptic elements with dynamically tunable depression linearity controlled by an external magnetic field, a functionality reminiscent of neuromodulation in biological systems.
View Article and Find Full Text PDFComparison of Outcomes of Hinge Craniotomy Versus Decompressive Craniectomy in Patients With Malignant Intracranial Hypertension: A Prospective, Randomized Controlled Study.
Korean J Neurotrauma
December 2024
Department of Neurosurgery, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran.
Objective: This randomized controlled trial (RCT) aimed to compare the short-, mid-, and long-term outcomes in patients with malignant intracranial hypertension undergoing either decompressive craniectomy (DC) or hinge craniotomy (HC).
Methods: In this prospective RCT, 38 patients diagnosed with malignant intracranial hypertension due to ischemic infarction, traumatic brain injury, or non-lesional spontaneous intracerebral hemorrhage, who required cranial decompression, were randomly allocated to the DC and HC groups.
Results: The need for reoperation, particularly cranioplasty, in the DC group was significantly different from that in the HC group.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!