Preservation of Wastewater Effluent Samples for Forms of Nitrogen and Phosphorus

2009 ◽  
pp. 152-152-12 ◽  
Author(s):  
DF Krawczyk
Keyword(s):  
Wastewater Effluent ◽  
Nitrogen And Phosphorus

Removal of Nitrogen and Phosphorus from Piggery Wastewater Effluent Using the Green Microalga Scenedesmus obliquus

2013 ◽  
Vol 139 (9) ◽  
pp. 1198-1205 ◽  
Author(s):  
Min-Kyu Ji ◽  
Reda A. I. Abou-Shanab ◽  
Jae-Hoon Hwang ◽  
Thomas C. Timmes ◽  
Hyun-Chul Kim ◽  
...  
Keyword(s):  
Scenedesmus Obliquus ◽  
Wastewater Effluent ◽  
Nitrogen And Phosphorus ◽  
Piggery Wastewater ◽  
Green Microalga

Nitrogen and phosphorus removal from municipal wastewater effluent using microalgal biofilms

2011 ◽  
Vol 45 (18) ◽  
pp. 5925-5933 ◽  
Author(s):  
N.C. Boelee ◽  
H. Temmink ◽  
M. Janssen ◽  
C.J.N. Buisman ◽  
R.H. Wijffels
Keyword(s):  
Phosphorus Removal ◽  
Municipal Wastewater ◽  
Wastewater Effluent ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal

Development of algal membrane bioreactor technology for wastewater treatment and polishing

2014 ◽  
Author(s):  
◽  
Meng Xu
Keyword(s):  
Wastewater Treatment ◽  
Membrane Bioreactor ◽  
Wastewater Treatment Plants ◽  
Domestic Wastewater ◽  
Wastewater Effluent ◽  
Nitrogen And Phosphorus ◽  
University Of Missouri ◽  
Nitrogenous Compounds ◽  
The University ◽  
Receiving Water

[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] The discharge of secondary wastewater effluent from wastewater treatment plants can lead to eutrophication of receiving water bodies due to the presence of nitrogen and phosphorus in the effluent. Although nitrogenous compounds are commonly removed in domestic wastewater, removal of phosphorus is far less efficient. Thus this Ph.D thesis research is aimed to develop an algae-based MBR system to treat secondary wastewater.

Influence of increased nutrient supply on Microcystis aeruginosa at cellular and proteomic levels

2020 ◽  
Vol 85 ◽  
pp. 47-58
Author(s):  
Y Jiang ◽  
Y Liu
Keyword(s):  
Microcystis Aeruginosa ◽  
Regulatory Protein ◽  
Acid Synthesis ◽  
Nutrient Supply ◽  
Nitrogen Supply ◽  
Nitrogen And Phosphorus ◽  
Comprehensive Description ◽  
Amino Acid Synthesis ◽  
High Nutrient ◽  
Proteomic Responses

Various studies have observed that increased nutrient supply promotes the growth of bloom-forming cyanobacteria, but only a limited number of studies have investigated the influence of increased nutrient supply on bloom-forming cyanobacteria at the proteomic level. We investigated the cellular and proteomic responses of Microcystis aeruginosa to elevated nitrogen and phosphorus supply. Increased supply of both nutrients significantly promoted the growth of M. aeruginosa and the synthesis of chlorophyll a, protein, and microcystins. The release of microcystins and the synthesis of polysaccharides negatively correlated with the growth of M. aeruginosa under high nutrient levels. Overexpressed proteins related to photosynthesis, and amino acid synthesis, were responsible for the stimulatory effects of increased nutrient supply in M. aeruginosa. Increased nitrogen supply directly promoted cyanobacterial growth by inducing the overexpression of the cell division regulatory protein FtsZ. NtcA, that regulates gene transcription related to both nitrogen assimilation and microcystin synthesis, was overexpressed under the high nitrogen condition, which consequently induced overexpression of 2 microcystin synthetases (McyC and McyF) and promoted microcystin synthesis. Elevated nitrogen supply induced the overexpression of proteins involved in gas vesicle organization (GvpC and GvpW), which may increase the buoyancy of M. aeruginosa. Increased phosphorus level indirectly affected growth and the synthesis of cellular substances in M. aeruginosa through the mediation of differentially expressed proteins related to carbon and phosphorus metabolism. This study provides a comprehensive description of changes in the proteome of M. aeruginosa in response to an increased supply of 2 key nutrients.

Method application of optimal multi-parameter analysis to assess the distribution of water masses as an example of CTD data of the Barents Sea in summer 2017

2019 ◽  
pp. 38-51
Author(s):  
Valeriy G. Yakubenko ◽  
Anna L. Chultsova
Keyword(s):  
Barents Sea ◽  
Field Measurements ◽  
Structural Similarity ◽  
Water Masses ◽  
Parameter Analysis ◽  
Water Dynamics ◽  
Phosphorus Concentration ◽  
Nitrogen And Phosphorus ◽  
The Barents Sea ◽  
Expert Assessments

Identification of water masses in areas with complex water dynamics is a complex task, which is usually solved by the method of expert assessments. In this paper, it is proposed to use a formal procedure based on the application of the method of optimal multiparametric analysis (OMP analysis). The data of field measurements obtained in the 68th cruise of the R/V “Academician Mstislav Keldysh” in the summer of 2017 in the Barents Sea on the distribution of temperature, salinity, oxygen, silicates, nitrogen, and phosphorus concentration are used as a data for research. A comparison of the results with data on the distribution of water masses in literature based on expert assessments (Oziel et al., 2017), allows us to conclude about their close structural similarity. Some differences are related to spatial and temporal shifts of measurements. This indicates the feasibility of using the OMP analysis technique in oceanological studies to obtain quantitative data on the spatial distribution of different water masses.

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