scholarly journals Phosphorus Sorption in Soils Overlying Basement Complex Rock, Alluvium, Coastal Plain Sand and Imo Shale Parent Materials

2021 ◽  
pp. 41-54
Author(s):  
Robert Ehi Orhue ◽  
Adams Emomu ◽  
Esohe Obazuaye ◽  
Aimiesomon Michael Erhayimwen ◽  
Ajayi Gboyega Bepo
Keyword(s):  
Coastal Plain ◽  
Soil Samples ◽  
Phosphorus Sorption ◽  
Basement Complex ◽  
Parent Materials ◽  
P Sorption ◽  
Benin City ◽  
Randomized Design ◽  
Significant Difference ◽  
Sorption Index

This study aimed at evaluating phosphorus (P) sorption capacities in Soils overlying basement complex Rock (A), Alluvium (B), coastal plain sand (C) and Imo shale (C) parent materials. Completely randomized design was used to collect soil samples from 5 depths in 3 replications from Idanre, Koko, NIFOR and Uhomora in Nigeria. Samples collected were analyzed in the central analytical laboratory of the Nigerian Institute for Oil palm Research, Benin City, Nigeria between march 2016 and September 2017. 60 soil samples were equilibrated in 25 ml of 0.01 M CaCl2 containing various concentration of P as KH2PO4  to give 0, 50, 100, 150, 200 and 250 mg/L P for 24 hours (h)  at room temperature 25 ± 2 oC. Genstat statistical package was used to calculate Analysis of variance, correlation of Phosphorus sorption index (PSI) with soil properties, coefficient of variation, means separation and Least Significant difference (LSD). The rate and %P adsorption increased with increasing concentration of P added to the soils. The P sorption capacities of the soils considering Freundlich model decreased in the order of D > B > C >A. %P adsorbed was highest in D soils with value of 15.19% for 100 mg/kg P added. The PSI correlated with organic carbon r = -0.58 P ≤ .05 in C soils, r = 0.44 P ≤ .05 in D soils, it also correlated with N r = -0.58 P ≤ .05 in C Soils, K r = 0.57 P ≤ .05, r = 0.49 P ≤ .05 in C and D soils respectively. D soils sorbed more P than other soils hence the D soils will require more P fertilization to attain optimum P concentration in soil solution, however further study is required to determine the form of P sorbed by these parent materials.

scholarly journals Freundlich and Langmuir Isotherm Studies of Phosphorus Sorption unto Soils Derived from Basement Complex Rock, Alluvium, Coastal Plain Sand and Shale Parent Materials

2021 ◽  
pp. 27-36
Author(s):  
Adams Emomu ◽  
Esohe Ehis-Iyoha ◽  
Emmanuel Ochuko Ufinomue ◽  
Donald Okpo Odidi ◽  
Sandra Amen Ighedosa
Keyword(s):  
Coastal Plain ◽  
Soil Samples ◽  
Phosphorus Sorption ◽  
Adsorption Model ◽  
Basement Complex ◽  
Sorption Data ◽  
Freundlich Model ◽  
Parent Materials ◽  
P Sorption ◽  
Benin City

To provide information on best model to predict Phosphorus (P) Sorption unto Soils derived from Basement Complex Rock, Alluvium, Coastal Plain Sand and Imo Shale Parent Materials in 3 states of Nigeria. Completely randomized design was used to collect surface soil samples in 3 replications from 4 locations in Nigeria. Samples were collected from Idanre, Koko, NIFOR and Uhonmora in Ondo, Delta and Edo states Nigeria, laboratory analysis was carried out in the Central analytical laboratory of Nigerian Institute for Oil-Palm Research (NIFOR) Benin City, Nigeria between march 2016 and September 2017. Soil samples were equilibrated in 25 ml of 0.01 M CaCl2 containing various concentration of P as KH2PO4  to give 0, 50, 100, 150, 200 and 250 mg/L P for 24 hours (h) at room temperature 25 ± 2oC. 3 drops of CHCl3 was added to inhibit P mineralization. The suspension was shaken for 24 h on a reciprocating mechanical shaker, centrifuged at 7000 rpm After equilibration, decanted and P determined using spectrophotometer. The sorption data were fitted to linear Freundlich and Langmuir sorption isotherm. Considering the Freundlich model, P adsorption capacity (a) and P sorption energy (n) was highest in soils B (1400 mg kg-1) and (2.806 L kg-1) respectively. The Freundlich model fitted better to the data obtained with average root mean square error (RMSE) and R2 value of 0.69 and 0.951 respectively, as against average RMSE and R2 value of 1.60 and 0.883 respectively obtained from Langmuir model. The sorption data fitted well to Freundlich and Langmuir isotherms of which Freundlich Adsorption model was found to be better based on lowest RMSE (0.69) and highest regression (R2 = 0.951) value. Freundlich model should be adopted to determine P sorption characteristics of the soils studied. These predictors, however, need further works to validate reliability.

Phosphorus sorption - desorption by purple soils of China in relation to their properties

Soil Research ◽  
2007 ◽  
Vol 45 (3) ◽  
pp. 182 ◽  
Author(s):  
M. Li ◽  
Y. L. Hou ◽  
B. Zhu
Keyword(s):  
Binding Energy ◽  
Single Point ◽  
Phosphorus Sorption ◽  
Soil P ◽  
P Sorption ◽  
Desorption Curve ◽  
Degree Of P Saturation ◽  
Soil Test P ◽  
Sorption Index ◽  
Water Eutrophication

The understanding of phosphorus (P) sorption and desorption by soil is important for better managing soil P source and relieving water eutrophication. In this study, sorption–desorption behaviour of P was investigated in purple soils, collected from 3 kinds of purple parent materials with different kinds of land cover, in the upper reaches of Yangtze River, China, using a batch equilibrium technique. Results showed that most of the farmed purple soils had P sorption capacity (PSC) values ranging from 476 to 685 mg P/kg, while higher PSC values were observed in the soils from forestland and paddy field. A single-point P sorption index (PSI) was found to be significantly correlated with PSC (R2 = 0.94, P < 0.001), suggesting its use in estimating PSC across different types of purple soils. The PSC of purple soils was positively and strongly related to the contents of amorphous Fe and Al oxides (r = 0.73, P < 0.001), clay (r = 0.55, P < 0.01), and organic matter (r = 0.50, P < 0.05). Furthermore, the constant relating to binding strength was positively correlated with the content of amorphous Fe and Al oxides (r = 0.66, P < 0.01), but negatively correlated with labile Ca (r = –0.43, P < 0.05) and soil pH (r = –0.53, P < 0.01). Some acidic purple soils with high binding energy featured a power desorption curve, suggesting that P release risk can be accelerated once the P sorbed exceeds a certain threshold. Other soils with low binding energy demonstrated a linear desorption curve. The P desorption percentage was significantly correlated with soil test P (r = 0.78, P < 0.01) and the degree of P saturation (r = 0.82, P < 0.01), but negatively correlated with PSC (r = –0.66, P < 0.01).

Profile distribution of iron sesquioxide contents in selected Nigerian soils

1980 ◽  
Vol 95 (1) ◽  
pp. 191-198 ◽  
Author(s):  
E. J. Udo
Keyword(s):  
Coastal Plain ◽  
Relative Distribution ◽  
Basement Complex ◽  
Fe Oxide ◽  
Parent Materials ◽  
Nigerian Soils ◽  
Profile Distribution ◽  
Basaltic Soils ◽  
Poorly Drained Soils ◽  
Nigerian Soil

SummaryTotal, dithionite-extractable (‘free’) and oxalate-extractable (amorphous) Fe as Fe2O3 forms were determined in eight Nigerian soil profiles selected to include four major parent materials and different drainage conditions.Total Fe ranged from 1·98 to 15·01 % Fe2O3, the average contents being 4·40, 8·62, 12·59 and 13·49 Fe2O3 for soils derived from the coastal plain sands, basement complex rocks, shale and basalt, respectively. ‘Free’ Fe ranged from 0·08 to 12·28% Fe2O3, the basaltic soils having the highest content, and those on shale the least. Generally the poorly drained soils had low contents, the free Fe oxide constituting about 61 % of total Fe in well-drained soils, and only about 9% in poorly drained soils.The oxalate-extractable or non-crystalline Fe oxide ranged from 0·04 to 1·21% Fe2O3. The proportion of amorphous iron oxide, indicated by the ‘active’ ratio ‘oxalate-Fe/DCB-Fe’, was higher in poorly drained than in well-drained soils.The clay/DBC-Fe ratio remained constant in the well-drained soils but increased with depth in the poorly drained profiles, indicating a co-migration of free Fe oxide and clay in the former but not in the latter soils.In general, the relative distribution of the different Fe forms appeared influenced by both the parent materials and the drainage of the soils.

scholarly journals The Effect of Calcium Silicate on The Phosphorus Sorption Characteristics of Andisols Lembang West Java

2008 ◽  
Vol 10 (1) ◽  
pp. 14-19 ◽  
Author(s):  
Arief Hartono
Keyword(s):  
Calcium Silicate ◽  
Dry Weight ◽  
Phosphorus Sorption ◽  
Sorption Kinetic ◽  
Sorption Data ◽  
Kinetic Experiment ◽  
P Sorption ◽  
Randomized Design ◽  
Set Up ◽  
Sorption Characteristics

The effect of calcium silicate CaSiOJ the phosphorus (P) sorption characteristics were studied in Andisols Lembang.The amount of 0, 2.5 and 5% CaSiOJ (calcium silicate) or 0, 7.5 and 15 g calcium silicate per pot was added to the 300 g(oven-dry weight) soil and incubated for one month. A completely randomized design in double replication was set up. After one month incubation, P sorption and P sorption kinetic experiments were conducted The results of P sorption experiment showed that P sorption data were satisfactorily described by the Langmuir equation. which was used to determine P sorption maxima, bonding energies and P sorbed at 0.2 mg P £"' (standard P requirement). The application of calcium silicate did not affect significantly P sorption maxima but decreased significantly the P bonding energies. Calcium silicate also decreased significantly the standard P requirements. As for P sorption kinetic experiment. the results showed that application of 5% calcium silicate decreased significantly the rate constant of P sorption and P sorbed maximum at given amount of added P. The results suggested that the application of calcium silicate to the Andisols made added P was more available for plant.

scholarly journals Phosphorus Sorption Kinetics in Reclaimed Lignite Mine Soils under Different Age Stands ofRobinia pseudoacaciaL. in Northeast Germany

2015 ◽  
Vol 2015 ◽  
pp. 1-19 ◽  
Author(s):  
Anna Slazak ◽  
Dirk Freese
Keyword(s):  
Robinia Pseudoacacia ◽  
Sorption Kinetics ◽  
Phosphorus Sorption ◽  
P Sorption ◽  
Short Rotation ◽  
Lignite Mine ◽  
Significant Difference ◽  
Saturation Factor ◽  
Plant Available P ◽  
Total P

The objectives of the work were to study phosphorus (P) dynamics in postmining soils under short rotation coppices at different stages ofRobinia pseudoacaciaL. growth (2, 3, 4, and 14 years old). From the results obtained, the amount of total P, total organic P, plant available P, and P stock increased with increasing age ofR. pseudoacacia. However, values were very low compared to that recommended for optimum plant growth, reflecting a general deficit in P. Additionally, the P sorption and desorption processes were investigated. The total P sorption capacity obtained from the laboratory experiments was on average, 2.5 times greater for soils under the oldestR. pseudoacaciathan values measured at the younger sites. Values of P saturation factor (α) were comparatively lower compared to that reported in the literature. This may be attributed primarily to the less P saturation of the postmining soils, coupled with rather small contents of oxalate ironFeoxand aluminiumAlox(sum of 47 mmol kg−1). Results demonstrate significant difference between 2 and 14 years oldR. pseudoacacia; thus establishing of short rotation coppice (SRC) on degraded marginal sites may be a valuable method of soil reclamations.

scholarly journals Evaluation of phosphate sorption capacity and external phosphorus requirement of some agricultural soils of the southwestern Ethiopian highlands

2021 ◽  
Vol 18 (2) ◽  
pp. 136
Author(s):  
Berhanu Dinssa ◽  
Eyasu Elias
Keyword(s):  
Sorption Capacity ◽  
Crop Production ◽  
Agricultural Soils ◽  
Soil Characteristics ◽  
Soil Samples ◽  
Phosphorus Sorption ◽  
Acidic Soils ◽  
Ethiopian Highlands ◽  
P Sorption ◽  
P Sorption Capacity

<span>One of the most soil fertility management problems for crop production on acidic soils of the Ethiopian highlands is phosphorus fixation. The research was executed to assess the P-sorption capacity and to determine the external P requirement of different acidic soils in the Southwestern highlands of Ethiopia. Phosphorus sorption capacity (Kf) and its relation with selected soil characteristics were assessed for some major agricultural soils in the Ethiopian highlands to answer the questions, ‘What are the amount of P-sorption capacity and external P requirement of Nitisols, Luvisols, Alisols, and Andosols in Ethiopia?’. Twelve surface soil samples (at depth of 0-30 cm) were gathered and the P-sorption capacity was estimated. Phosphorus-sorption data were obtained by equilibrating 1 g of the 12 soil samples with 25 ml of KH<sub>2</sub>PO<sub>4</sub> in 0.01 M CaCl2, having 0, 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, and 330 mg P L<sup>-1</sup> for 24 hours. The data were adjusted to the Freundlich adsorption model and the relationship among P-sorption and soil characteristics was established by correlation analysis.  Clay content and exchangeable acidity, organic matter, Al<sub>2</sub>O<sub>3</sub>, and Fe<sub>2</sub>O<sub>3</sub> oxides have affected phosphorus-sorption at a significance level of (P &lt; 0.05).  Alisols had the highest Kf value (413 mg kg<sup>-1</sup>) but Nitisols had the lowest Kf (280 mg kg<sup>-1</sup>). The external phosphorus fertilizer requirement of the soils was in the order of 25, 30, 32, and 26 mg P kg<sup>-1</sup> for Nitisols, Luvisols, Alisols, and Andosols sequentially. The Kf varies among different soil types of the study area. The magnitude of the soil’s Kf was affected by the pH of the soil, soil OM content, and oxides of Fe and Al. Therefore, knowledge of the soils’ P retention capacity is highly crucial to determine the correct rate of P </span><span>fertilizer</span><span> for crop production.</span>

Phosphorus Sorption in Hydromorphic Soils Overlying Alluvium and Coastal Plain Sand Parent Materials in Delta State, Nigeria

2017 ◽  
Vol 48 (8) ◽  
pp. 955-962
Author(s):  
P. E. Osayande ◽  
P. O. Oviasogie ◽  
E. R. Orhue ◽  
B. E. Awanlemhen ◽  
E. Oko-oboh
Keyword(s):  
Coastal Plain ◽  
Phosphorus Sorption ◽  
Parent Materials ◽  
Hydromorphic Soils

scholarly journals Evaluation of phosphorous fixation capacity on river alluvium, beach ridge and coastal plain sand of Akwa ibom state, Nigeria

2021 ◽  
pp. 23-28
Author(s):  
Umoh F.O ◽  
Essien O. A ◽  
Osodeke V. E ◽  
Amadi D. J
Keyword(s):  
Coastal Plain ◽  
Water Soluble ◽  
Soil Types ◽  
Available P ◽  
Beach Ridge ◽  
Parent Materials ◽  
Randomized Design ◽  
Fixation Capacity ◽  
Completely Randomized Design ◽  
P Addition

Phosphorous fixation capacities of selected parent materials in Akwa Ibom State were assessed. The soils used were those derived from river alluvium, beach ridge sand and coastal plain sand. These soils were incubated with four rates of P ranging from 0, 20, 40, 80 mgl-l prepared from KH2PO4 and incubated for 1, 7, 30, 60 and 90 days. The design was 3 x 4 factorial experiment (3 soil types and 4 rates of P) fitted into Completely Randomized Design (CRD) with three replications. At a set day, the exchangeable and water-soluble (available) P were extracted with Bray P – I extractant and P not extracted by this extractant was considered fixed in the soils, using fractional recovery of P to obtained. The results showed that the available P in the soils decrease with days of incubation. Beach ridge sand had the highest fractional recovery of P while river alluvium had the least. The trend were beach ridge sand (5.04 gkg-1) > coastal plain sand (2.34 gkg-1) > river alluvium (1.07 gkg-1). The recovery of P increase with increasing P addition. The fixing capacity of the soils increased in this order: river alluvium (97%) > coastal plain sand (92%) > beach ridge sand (84%). The result also revealed that the amount of P fixed increases with increasing rates of P addition.

scholarly journals Assessment of Gypsum as a Soil Ameliorant on Salt-affected Soils in the Ho-Keta Plain of the Volta Region, Ghana

2021 ◽  
pp. 157-162
Author(s):  
L. Sackey ◽  
E. Osei ◽  
E. O. Bennoah ◽  
A. Tettey
Keyword(s):  
Chemical Properties ◽  
Sodium Adsorption Ratio ◽  
Soil Samples ◽  
Soil Sampling ◽  
Randomized Design ◽  
Significant Difference ◽  
Volta Region ◽  
Salt Affected Soils ◽  
Initial Sampling ◽  
Physical And Chemical

Aims: To assess the effectiveness of Gypsum as a chemical ameliorant on three selected salt-affected soils of the Ho-Keta plain, in the Volta region of Ghana. Study Design:  Complete Randomized Design. Place and Duration of Study:  Soil Research Institute, Kwadaso, Kumasi between June 2014 and July 2019. Methodology: Soil sampling was taken in two forms. The initial sampling was taken at a depth of 0-30 cm from Anyako, Anyenui and Atiehife for the soil physical and chemical analysis. Samples were further taken from profiles, composited and sub-sampled for the leaching experiment. Approximately 2.6 kg of the soil samples from the different sites were taken, mixed thoroughly with different rates 0%, 25%, 50%, 75% and 100% of Gypsum, (CaSO4.2H2O) and filled into fifteen perforated polyvinyl plastic pots and replicated four times. The pots were saturated with water, incubated for 24 h and leached intermittently with 120 mL distilled water for a period of four weeks. Results: Significant displacement of Na+ by Ca2+ and subsequently leached became evident in the reduced values recorded for pH, EC and SAR. The applied gypsum reduced pH within a range of 4.0 to 4.2 compared to the original soil with no significant differences among the treatments at p = 0.05. Though a similar trend was observed for EC, significant difference at p = 0.05 was observed at gypsum level above 50%. Sodium adsorption ratio recorded a marked difference as gypsum level was varied with significant difference at p = 0.05 compare to the control.   Conclusion: The study revealed that gypsum rates at 75% and 100% Gypsum requirement were effective in improving the chemical properties of the soils with significant reductions in salinity, sodicity and pH. Atiehife soil performed better compared to Anyenui and Anyako soils.

scholarly journals FIELD PILOT STUDY ON THE ASSESSMENT OF SELECTED HYDROCARBON REMEDIATION TECHNIQUES

2019 ◽  
Vol 10 (2) ◽  
pp. 121-134
Author(s):  
E. S. Okonofua ◽  
J. O. Babatola ◽  
Oluwapelumi Ojuri
Keyword(s):  
Pilot Study ◽  
Contaminated Soils ◽  
Soil Samples ◽  
High Concentration ◽  
Benin City ◽  
Significant Difference ◽  
Polycyclic Aromatic ◽  
Land Farming ◽  
Contamination Levels ◽  
Contamination Concentration

The study discussed the remediation potentials of phytoremediation, land farming treatment and chemico-biological stabilization treatments in degrading Total Petroleum Hydrocarbon (TPH) and Polycyclic Aromatic Hydrocarbon (PAH) in soils polluted with crude oil in varying concentrations. The field pilot study was carried out in Benin city, Nigeria by preparing nine (9) cells with sub-cells attached which serve as control; each cell measures 1.53 m2. Three cells contained 100 kg of artificially contaminated soils at low contamination concentration (3000 mg kg-1), the next three cells contained 100 kg of contaminated soil samples but with medium concentration (5000 mg kg-1), while the last three cells contained 100 kg of spike samples in high concentration (7000 mg kg-1). The sub cells contained 10 kg of soil and left untreated. Each role containing three cells with low, medium and high concentration was treated separately using the three treatment methods. Soil samples to organic amendment ratio for the treatments was 2:1. The results showed over 90% reduction in the initial concentration of TPH and PAH across the different contamination levels with except in the control sub cells were only 30% reduction was recorded. The treated soil was found useful for agricultural purpose. One-way analysis of variance reveals a significant difference at p≤0.05 in the results obtained in application of the three methods. This implies that the methods effectively degraded the TPH and PAH concentrations. The three different methods of treatments effectively degraded TPH and PAH contaminants with land farming treatment being the best of the three.

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