Phosphorus nutrition of Caustis blakei grown with two phosphorus sources of different solubility in two soils of differing phosphorus adsorption capacity

2006 ◽  
Vol 110 (3) ◽  
pp. 298-304 ◽  
Author(s):  
Margaret E. Johnston ◽  
Daniel M. Gikaara ◽  
David G. Edwards
Keyword(s):  
Adsorption Capacity ◽  
Phosphorus Nutrition ◽  
Phosphorus Adsorption ◽  
Phosphorus Sources

Samples disturbance overestimates phosphorus adsorption capacity in soils under long-term application of pig slurry

2019 ◽  
Vol 65 (9) ◽  
pp. 1262-1272 ◽  
Author(s):  
Luciano Colpo Gatiboni ◽  
Djalma Eugênio Schmitt ◽  
Paulo Cezar Cassol ◽  
Jucinei José Comin ◽  
Joice Crescêncio Heidemann ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Pig Slurry ◽  
Phosphorus Adsorption

scholarly journals Effect of Cow Dung, Biogas Slurry and Vermicompost on Phosphorus Adsorption Behavior of Soil

2015 ◽  
Vol 7 (3) ◽  
pp. 167-175 ◽  
Author(s):  
M. Seafatullah ◽  
M. A Hoque ◽  
M. S. Islam ◽  
M. M. Islam ◽  
M. N. Islam
Keyword(s):  
Adsorption Capacity ◽  
Soil Phosphorus ◽  
Phosphate Fertilizer ◽  
Phosphorus Release ◽  
Adsorption Behavior ◽  
Cow Dung ◽  
Biogas Slurry ◽  
Fertilizer Management ◽  
Phosphorus Fertilizer ◽  
Phosphorus Adsorption

One of the approaches for phosphorus fertilizer management is controlling the soil phosphorus adsorption behavior. To examine the effect on phosphorus adsorption behavior, three amended soil samples were prepared by mixing 10% (w/w in dry basis) cow dung, biogas slurry and vermicompost with soil. Phosphorus adsorption behavior was examined by using Langmuir, and Temkin adsorption isotherms. Initially, biogas slurry and vermicompost increased the maximum phosphorus adsorption capacity (MPAC) of soil from 461 µg g-1 (control) to 558.0357 and 586.17 µg g-1 respectively, and then decreased steadily and reached 429.92 and 398.41 µg g-1 respectively in five weeks.  Whereas in case of cow dung, MPAC was initially decreased, then reached maximum in 17 days and ultimately decreased. Thus application of cow dung along with phosphate fertilizer seems to increase the loss of the fertilizer through runoff and leaching. Conversely, biogas slurry and vermicompost prevent phosphorus loss by regulating phosphorus release through initial enhancement followed by gradual decrease in phosphorus adsorption capacity of soil. Both biogas slurry and vermicompost can be considered as good soil amendments as they have the ability to control the release of phosphorus fertilizer as per the need of the plants.

Maximum Phosphorus Adsorption Capacity Adjusted to Isotherm Models in Representative Soils of Eastern Amazon

2015 ◽  
Vol 46 (20) ◽  
pp. 2615-2627 ◽  
Author(s):  
Rafael Silva Guedes ◽  
Antonio Rodrigues Fernandes ◽  
Edna Santos de Souza ◽  
João Roberto Rosa e Silva
Keyword(s):  
Adsorption Capacity ◽  
Isotherm Models ◽  
Phosphorus Adsorption

scholarly journals Application of Cold Region Regenerable Biomass in Phosphorus Adsorption in Reclaimed Water

Water ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1815
Author(s):  
Jinghui Wu ◽  
Xiangyu Li ◽  
Zhian Ying ◽  
Chi Wang ◽  
Wu Yang ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Water Distribution ◽  
Wastewater Treatment Plants ◽  
Reclaimed Water ◽  
Chemical Precipitation ◽  
Pine Needles ◽  
Production Costs ◽  
Raw Material ◽  
Phosphorus Adsorption ◽  
Wide Ph Range

In order to enhance the using efficiency of the adsorbent and decrease production costs, reclaimed saturation Lanthanum modified pine needles (LH pine needles) have been studied as a possible solution. Pine needles gathered from the woods of Northeast China area were used as raw material for generating LH pine needles by alkali-isopropanol treatment and chemical precipitation. To explore the utilization of LH pine needles as a recycling adsorbent in wastewater treatment plants (WWTPs) and laboratory water distribution. Results show that removal effective of phosphorus (P) by LH pine needles in low concentration reclaimed water of WWTPs was 41% and up to more than 92% in its adding standard. In the wide pH range, LH pine has an effective adsorption capacity for phosphorus; pH can also interfere with the adsorption capacity of LH pine as there is a negative correlation between them. The adsorption of phosphorus by LH pine needles is divided into three stages with a pH ranging from 3~11. Ligand exchange reaction, electrostatic reaction and Lewis acid reaction are PO43− adsorption mechanism. The analysis of the recycling efficiency of LH pine needles proved that LH pine needles have good regeneration performance. After being eluted by NaOH regeneration agent for more than 10 times, the adsorption efficiency of phosphorus can still be stable at over 90% in seven cycles.

scholarly journals Dewatered alum sludge: a potential adsorbent for phosphorus removal

2006 ◽  
Vol 54 (5) ◽  
pp. 207-213 ◽  
Author(s):  
Y. Yang ◽  
D. Tomlinson ◽  
S. Kennedy ◽  
Y.Q . Zhao
Keyword(s):  
Water Treatment ◽  
Adsorption Capacity ◽  
Phosphorus Removal ◽  
Adsorption Process ◽  
Study Groups ◽  
Phosphorus Adsorption ◽  
Langmuir Adsorption ◽  
Adsorption Capacities ◽  
Alum Sludge ◽  
Best Fit

Alum sludge refers to the by-product from the processing of drinking water in water treatment works. In this study, groups of batch experiments were designed to identify the characteristics of dewatered alum sludge for phosphorus adsorption. Air-dried alum sludge (moisture content 10.2%), which was collected from a water treatment works in Dublin, was subjected to artificial P-rich wastewater adsorption tests using KH2PO4 as a model P source. Adsorption behaviours were investigated as a function of amount and particle size of alum sludge, pH of solution and adsorption time. The results have shown that pH plays a major role not only in the adsorption process but also in the adsorption capacity. With regard to adsorption capacity, this study reveals the Langmuir adsorption isotherm being the best fit with experimental data (R2=0.98–0.99). The maximum adsorption capacities range from 0.7 to 3.5 mg-P/g when the pH of the synthetic P solution was varied from 9.0 to 4.3, accordingly. The outcome of this study indicated that alum sludge is suitable for use as an adsorbent for removal of phosphate from wastewater.

Movement of applied phosphorus following the mining and revegetation of mineral sands on Australia's east coast

Soil Research ◽  
1984 ◽  
Vol 22 (2) ◽  
pp. 135 ◽  
Author(s):  
AJ Diggle ◽  
LC Bell
Keyword(s):  
Adsorption Capacity ◽  
Native Species ◽  
Rock Phosphate ◽  
East Coast ◽  
Unsaturated Flow ◽  
Water Movement ◽  
Triple Superphosphate ◽  
Phosphorus Adsorption ◽  
Phosphorus Source ◽  
Quartz Grains

The magnitude of phosphorus movement through a range of mined and unmined sands on Australia's east coast was measured under saturated and unsaturated flow in laboratory columns and in a field experiment of 16 months' duration. Relationships were examined between the amounts of leaching observed and the chemical and physical characteristics of the sands and the rates (0-306 kg P/ha) and forms (KH2PO4,, triple superphosphate and rock phosphate) in which phosphorus was added. Moderate movement of phosphorus was observed in all of the sand types examined, with the greatest movement occurring in A, and stockpiled A, horizon material from a podzol profile and the least being in B horizon material from the same profile. The extent of movement was related to the phosphorus adsorption capacity of the sands, the solubility of the phosphorus source, and the amount and rate of water movement. The adsorption capacity of the sands was positively correlated with the amount of aluminium and iron oxyhydroxides on the quartz grains; the coefficients of correlation (r) between the maximum phosphorus adsorbed and the aluminium and iron extracted by H2SO4- HClO4, were 0.98 and 0.84 respectively. The relevance of the findings to ground water quality and native species regeneration are briefly discussed.

Phosphorus Removal in Constructed Wetlands Using Gravel and Industrial Waste Substrata

1993 ◽  
Vol 27 (1) ◽  
pp. 107-113 ◽  
Author(s):  
R. A. Mann ◽  
H. J. Bavor
Keyword(s):  
Adsorption Capacity ◽  
Constructed Wetlands ◽  
Phosphorus Removal ◽  
Industrial Waste ◽  
Large Scale ◽  
Maximum Adsorption Capacity ◽  
Phosphorus Adsorption ◽  
Freundlich Isotherms ◽  
Linear Profiles ◽  
Furnace Slag

The phosphorus removal efficiency of three gravel based constructed wetland systems (CWSs) has been investigated in a two year study in which secondary sewage effluent was treated. The constructed wetlands systems, 100m × 4m × 0.5m with an impervious liner, comprised an unplanted gravel “control” trench and gravel trenches planted with monoculture stands of either Typhaorientalis or Schoenoplectusvalidus. Inlet and outlet phosphorus concentrations and vertical and linear profiles of phosphorus were determined to characterise immobilisation/translocation through the systems. Laboratory phosphorus adsorption experiments were conducted with regional gravels and alternative adsorptive media including industrial slag and ash by-products. Phosphorus adsorption in the large scale gravel systems was variable and ranged from −40% to 40%. Laboratory adsorption capacity studies conducted with the gravel substratum indicated that field adsorption potential could be successfully simulated and modelled. Ion exchange experiments have been used to evaluate gravel and industrial conglomerates, with a view to improving phosphorus immobilisation through substratum selection and effluent flow management. Langmuir and Freundlich isotherms characterised phosphorus adsorption and the maximum adsorption capacity of regional gravels ranged from 25.8 to 47.5 μg P/g compared to blast furnace slag 160 to 420 μg P/g and fly ash 260 μg P/g. These results indicate that further investigations into the inclusion of industrial waste substrata in a CWS are warranted.

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