Phosphorus recovery from aquaculture wastewater using thermally treated gastropod shell

2015 ◽  
Vol 98 ◽  
pp. 296-308 ◽  
Author(s):  
N.A. Oladoja ◽  
R.O.A. Adelagun ◽  
A.L. Ahmad ◽  
I.A. Ololade
Keyword(s):  
Phosphorus Recovery ◽  
Gastropod Shell ◽  
Aquaculture Wastewater ◽  
Thermally Treated

scholarly journals Nutrients Recovery From Aquaculture Wastewater Using Thermally Treated Gastropod Shells

2018 ◽  
pp. 60-68
Author(s):  
Adelagun Ruth Olubukola Ajoke
Keyword(s):  
Substrate Material ◽  
Appropriate Technology ◽  
Phosphorus Recovery ◽  
General View ◽  
Recovery Efficiency ◽  
Waste Streams ◽  
Gastropod Shell ◽  
P Recovery ◽  
Aquaculture Wastewater ◽  
Technological Options

Various technological options are currently being assessed towards phosphorus recovery from waste streams. Premised on the development of sustainable appropriate technology, gastropod shell was thermally modified in this study to enhance its sorption capacity as a substrate material for P recovery from aquaculture used water. It was revealed that the thermal treatment impacted enhanced defects in the surficial morphologies of the gastropod shell leading to an increased P recovery efficiency; this was contrary to the general view that high P recovery efficiency of calcined calcium – rich materials was as a result of conversion of CaCO3 to CaO. Furthermore, about 60% P recovery was obtained and a substantial recovery of the total Nitrogen was also achieved. There was a significant improvement in the overall characteristics of the treated used water for safe disposal or reuse.

Analysis and balance of phosphorous removal from wastewater at urban wastewater treatment plant

2020 ◽  
Vol 15 (2) ◽  
pp. 142-151
Author(s):  
Peter Lukac ◽  
Lubos Jurik
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Wastewater Treatment Plants ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Phosphorus Recovery ◽  
Anaerobic Sludge ◽  
Biological Phosphorus Removal ◽  
The Mean

Abstract:Phosphorus is a major substance that is needed especially for agricultural production or for the industry. At the same time it is an important component of wastewater. At present, the waste management priority is recycling and this requirement is also transferred to wastewater treatment plants. Substances in wastewater can be recovered and utilized. In Europe (in Germany and Austria already legally binding), access to phosphorus-containing sewage treatment is changing. This paper dealt with the issue of phosphorus on the sewage treatment plant in Nitra. There are several industrial areas in Nitra where record major producers in phosphorus production in sewage. The new wastewater treatment plant is built as a mechanicalbiological wastewater treatment plant with simultaneous nitrification and denitrification, sludge regeneration, an anaerobic zone for biological phosphorus removal at the beginning of the process and chemical phosphorus precipitation. The sludge management is anaerobic sludge stabilization with heating and mechanical dewatering of stabilized sludge and gas management. The aim of the work was to document the phosphorus balance in all parts of the wastewater treatment plant - from the inflow of raw water to the outflow of purified water and the production of excess sludge. Balancing quantities in the wastewater treatment plant treatment processes provide information where efficient phosphorus recovery could be possible. The mean daily value of P tot is approximately 122.3 kg/day of these two sources. The mean daily value of P tot is approximately 122.3 kg/day of these two sources. There are also two outflows - drainage of cleaned water to the recipient - the river Nitra - 9.9 kg Ptot/day and Ptot content in sewage sludge - about 120.3 kg Ptot/day - total 130.2 kg Ptot/day.

BRUSH PHOSPHOR BRONZE

Alloy Digest ◽  
1986 ◽  
Vol 35 (10) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Service Life ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
Heat Treating ◽  
Thermally Treated

Abstract BRUSH PHOSPHOR BRONZE is precision rolled and thermally treated to produce a material with consistent formability and properties. The product offers design advantages, improved service life and reduced fabrication problems. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fatigue. It also includes information on corrosion resistance as well as forming, heat treating, joining, and surface treatment. Filing Code: Cu-516. Producer or source: Brush Wellman Inc..

Effectiveness of remediating aquaculture wastewater by immobi-lized microorganisms and Myriophyllum aquaticum

2013 ◽  
Vol 20 (2) ◽  
pp. 316-326
Author(s):  
Huawen WU ◽  
Kaihong LU ◽  
Wei QIAN ◽  
Zhongming ZHENG ◽  
Huihuang CHEN ◽  
...  
Keyword(s):  
Myriophyllum Aquaticum ◽  
Aquaculture Wastewater

Adsorption of organics on thermally treated solids obtained from colloidal silica

1987 ◽  
Vol 52 (3) ◽  
pp. 572-581 ◽  
Author(s):  
Miroslav M. Kopečni ◽  
Slobodan K. Milonjic ◽  
Wladyslaw Rudzinski ◽  
Jacek Jagiello
Keyword(s):  
Gas Chromatography ◽  
Thermodynamic Parameters ◽  
Adsorption Isotherms ◽  
Colloidal Silica ◽  
Adsorption Properties ◽  
Thermal Pretreatment ◽  
Lateral Interactions ◽  
Adsorbed Molecules ◽  
Temperature Range ◽  
Thermally Treated

Adsorption isotherms of three adsorbates on the solid beads obtained from colloidal silica were determined by means of gas chromatography at low surface coverages, when lateral interactions between the adsorbed molecules are negligible. The influence of thermal pretreatment on the adsorption properties of the solids was investigated in the temperature range from 343 to 423 K, while the solids were heated between 523 K and 1 223 K. The thermodynamic parameters of adsorption have been determined and used to discuss the adsorbate-adsorbent interactions.

scholarly journals Simultaneous amorphous silica and phosphorus recovery from rice husk poultry litter ash

RSC Advances ◽  
2021 ◽  
Vol 11 (15) ◽  
pp. 8927-8939
Author(s):  
Laura Fiameni ◽  
Ahmad Assi ◽  
Ario Fahimi ◽  
Bruno Valentim ◽  
Karen Moreira ◽  
...  
Keyword(s):  
Rice Husk ◽  
Amorphous Silica ◽  
Poultry Litter ◽  
Phosphorus Recovery ◽  
Secondary Source ◽  
Poultry Litter Ash

Rice husk poultry litter ash (RHPLA) is proposed as a valuable secondary source to recover phopshorus and amorphous silica in three steps.

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