Related Experiment Video
Updated: Feb 14, 2026

Estimating Sediment Denitrification Rates Using Cores and N2O Microsensors
Published on: December 6, 2018
Simultaneous removal of nitrate and phosphate from wastewater by siderite based autotrophic denitrification
Yan Yang1, Tianhu Chen2, Xun Zhang2
1Laboratory of Nanominerals and Environmental Material, School of Resources & Environmental Engineering, Hefei University of Technology, Hefei 230009, China; Department of Environmental Engineering, Anhui Jianzhu University, Hefei 230601, China.
Abstract:
The potential of simultaneous removal of nitrate and phosphate from wastewater by a single anaerobic Fe(II) oxidizing denitrifiers (the strain PXL1) was assessed using siderite biofilters under different influent TOC concentrations and hydraulic retention times (HRTs) over a 160-day trial. Higher TOC concentrations promoted NO3- removal, while there was no significant influence on PO43- removal. Lowering down HRT from 10 h to 5 h did not significantly influence NO3- and PO43- removal. The NO3- removal performance and microbial community structure in the biofilters indicated that NO3- was reduced to N2 by both strain PXL1 and heterotrophic Acidovorax delafieldii. Iron content analysis of the used siderite along the biofilters showed that PO43- removal was improved by the bio-oxidation of Fe(II) in siderite to Fe(III) via the strain PXL1. The coexistence of the strain PXL1 and natural siderite in nitrate-contaminated aquifers provides a practical technology for in situ remediation of nutrient contaminated waterbodies.
More Related Videos
08:05Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O
Published on: October 7, 2020
09:49Use of a Battery of Chemical and Ecotoxicological Methods for the Assessment of the Efficacy of Wastewater Treatment Processes to Remove Estrogenic Potency
Published on: September 11, 2016
Related Concept Videos
Phosphate Buffer
Sodium dihydrogen phosphate does not fully dissociate in neutral or acidic solutions. When a strong base, such as sodium hydroxide (NaOH), is introduced into the solution, sodium dihydrogen phosphate...
Electrophilic Aromatic Substitution: Nitration of Benzene
Antianginal Drugs: Nitrates and β-Blockers
Organic nitrates, such as nitroglycerin, play a pivotal role. Once metabolized, they liberate nitric oxide, a molecular marvel. Nitric oxide triggers guanylyl cyclase and augments cGMP production. This biochemical cascade orchestrates the relaxation of vascular smooth muscles, ushering in vasodilation and enhancing coronary blood flow....
Roles of Electrolytes: Calcium and Phosphate
The calcium concentration in blood plasma is primarily...
Acids, Bases and Neutralization Reactions
Extracorporeal Removal of Drugs: Hemoperfusion and Hemofiltration