Use of different adsorption models for characterizing P adsorption by the bottom sediment of four degraded urban lakes (Kashubian Lakeland, northern Poland)

2021 ◽  
Vol 218 ◽  
pp. 63-79
Author(s):  
Renata Augustyniak ◽  
Artur Serafin
Keyword(s):  
Bottom Sediment ◽  
Adsorption Models ◽  
P Adsorption ◽  
Urban Lakes ◽  
Northern Poland

scholarly journals Sorption Properties of the Bottom Sediment of a Lake Restored by Phosphorus Inactivation Method 15 Years after the Termination of Lake Restoration Procedures

Water ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 2175 ◽  
Author(s):  
Renata Augustyniak ◽  
Jolanta Grochowska ◽  
Michał Łopata ◽  
Katarzyna Parszuto ◽  
Renata Tandyrak ◽  
...  
Keyword(s):  
Bottom Sediment ◽  
Lake Restoration ◽  
Sorption Properties ◽  
Sediment Layer ◽  
Phosphate Binding ◽  
Phosphorus Adsorption ◽  
P Adsorption ◽  
Aluminum Compounds ◽  
Phosphorus Inactivation ◽  
Labile P

Artificial mixing and phosphorus inactivation methods using aluminum compounds are among the most popular lake restoration methods. Długie Lake (Olsztyńskie Lakeland, Poland) was restored using these two methods. Primarily, P precipitation and inactivation methods significantly increased the sorption properties of Długie Lake bottom sediment. Fifteen years after the termination of the restoration procedure, the alum-modified “active” sediment layer still has higher P adsorption abilities, which can limit P internal loading. Relatively low amounts of phosphates in the near-bottom water of Długie Lake, even in anoxia, as well as the fact that the assessed maximum sediment P sorption capacity is still higher than NH4Cl–P (labile P) and BD–P (Fe-bound P) sum (“native exchangeable P”), confirm that hypothesis. Among the tested P adsorption models for the sediment, the double Langmuir model showed the best fit to the experimental data (the highest R2 values). This may indicate that phosphorus adsorption by the tested sediments most likely occurs through phosphate binding at two types of active sorption sites. P adsorption by the studied lake sediment during experiments was significantly connected to aluminum content in sediment. The research into the adsorption properties of sediment can be used as a tool for the evaluation of lake restoration effects.

Modeling vapor uptake induced mobility shifts in peptide ions observed with transversal modulation ion mobility spectrometry-mass spectrometry

The Analyst ◽  
2015 ◽  
Vol 140 (20) ◽  
pp. 6945-6954 ◽  
Author(s):  
Vivek K. Rawat ◽  
Guillermo Vidal-de-Miguel ◽  
Christopher J. Hogan
Keyword(s):  
Mass Spectrometry ◽  
Ion Mobility Spectrometry ◽  
Ion Mobility ◽  
Peptide Ions ◽  
Adsorption Models ◽  
P Adsorption

Adsorption models are used to explain vapor dopant facilitated mobility shifts for peptide ions.

ANALYSIS OF ACCUMULATION AND DISTRIBUTION OF LEAD IN THE SYSTEM WATER-BOTTOM SEDIMENTS IN THE BACH DANG ESTUARY (VIETNAM)

2017 ◽  
pp. 62-66
Author(s):  
Truong Van Tuan ◽  
Irina Vladimirovna Volkova
Keyword(s):  
Bottom Sediment ◽  
Bottom Sediments ◽  
Water Samples ◽  
Suspended Solids ◽  
Natural Habitat ◽  
Bottom Layer ◽  
Sediment Samples ◽  
Natural Breeding ◽  
System Water ◽  
Water Bottom

Research was held in the estuary of the river Bach Dang (Dongbay community, Rakhtay district, Hai Phong, Vietnam) in June, 2012 - May, 2013. Concentration of lead was studied in water, suspended solids and bottom sediment. Clam beach (natural breeding environment of Meretrix lyrata ) was inspected regularly, every month. Water samples were taken 6 times from the bottom layer 10 cm down the bottom, once per 3 hours in each of 12 investigated zones. Bottom sediment samples were taken at the depth 2 cm. The findings show that lead accumulates mainly in suspended solids (23.3 mg/kg) and in bottom sediment (14.31 mg/kg), in water it is in small quantities (0.003 mg/kg). Analysis of bottom sediment samples taken in different places showed that they have even leadcontent, lead is distributed uniformly, localization of contaminations is not found. The results obtained can be assumed as the basis for investigating lead accumulation and its excretion by clam Meretrix lyrata organisms in the natural habitat.

Diet composition and prey selection of vendace Coregonus albula in the mesotrophic, temperate Lake Ostrowite (Northern Poland)

2008 ◽  
Vol 37 (1) ◽  
Author(s):  
Tomasz Kakareko ◽  
Paweł Napiórkowski ◽  
Jacek Kozłowski
Keyword(s):  
Diet Composition ◽  
Prey Selection ◽  
Temperate Lake ◽  
Coregonus Albula ◽  
Northern Poland ◽  
Mesotrophic Lake ◽  
Selection Of

Diet composition and prey selection of vendaceLake Ostrowite is a mesotrophic lake in Northern Poland 280.7 ha in area and 43 m deep at its deepest point. To study vendace (

RELEASE OF NUTRIENTS FROM BOTTOM SEDIMENTS IN OSAKA BAY, JAPAN IN 2015

2017 ◽  
Author(s):  
Yukio Komai ◽  
Yukio Komai ◽  
Mana Sakata ◽  
Mana Sakata ◽  
Masaki Nakajima ◽  
...  
Keyword(s):  
Bottom Sediment ◽  
Bottom Sediments ◽  
Sea Water ◽  
Industrial Effluents ◽  
Ammonium Nitrogen ◽  
Water Release ◽  
Osaka Bay ◽  
The Core ◽  
Similar Range ◽  
Sea Area

Osaka Bay is the most polluted enclosed sea area, in which is located the eastern part of the Seto Inland Sea, Japan. There are four kinds of sources on loadings of nutrients to Osaka Bay, which are land including rivers and industrial effluents beside coast, ocean sea water, release from bottom sediment to sea water, and wet and dry deposition from air. The pollutant loadings inflowing from the land to Osaka Bay have been cut by various policies since 1970’s. The concentrations of nutrients in the inner part of Osaka Bay have showed an obvious decreasing tendency. However, the water quality in offshore sea has not satisfied the environmental standard on nutrients. We investigated the amount of nutrients released from bottom sediments. The core samples were taken at two stations in the inner part of Osaka Bay once a month from February to November, 2015. The core incubation experiment in laboratory was conducted for 24 hours according to Tada et.al. The concentrations of ammonium nitrogen (NH4-N) and phosphate phosphorus (PO4-P) were measured by an automatic analyzer. The flux showed similar range with the values investigated in 1986. The results suggested that the flux of nutrients from bottom sediments in the inner part of Osaka Bay has not decreased during summer season at least since 1985. Therefore, the contribution of release from bottom sediment on the nutrients budget would relatively become larger in inner part of Osaka Bay.

Foreword: Why Urban Lakes?

1992 ◽  
Vol 27 (2) ◽  
pp. v-v
Author(s):  
R.J. Allan
Keyword(s):  
Urban Lakes
Sign in / Sign up

Export Citation Format

Share Document