The Role of Humic Acids on the Effects of Nanoplastics in Fish

ROLE OF ADDED PHOSPHOGYPSUM AND HUMIC ACIDS IN THE KINETIC RELEASE OF SALT FROM SALT AFFECTED SOIL (SALINE – SODIC)

Anbar Journal of Agricultural Sciences ◽

10.32649/ajas/2020/2 ◽

2020 ◽

pp. 15-27

Keyword(s):

Electrical Conductivity ◽

Humic Acids ◽

Release Rate ◽

Release Kinetics ◽

Sodium Adsorption Ratio ◽

Salt Affected Soil ◽

Two Factors ◽

Dissolved Ions ◽

Kinetic Release

In order to study the effect of phosphogypsum and humic acids in the kinetic release of salt from salt-affected soil, a laboratory experiment was conducted in which columns made from solid polyethylene were 60.0 cm high and 7.1 cm in diameter. The columns were filled with soil so that the depth of the soil was 30 cm inside the column, the experiment included two factors, the first factor was phosphogypsum and was added at levels 0, 5, 10 and 15 tons ha-1 and the second-factor humic acids were added at levels 0, 50, 100 and 150 kg ha-1 by mixing them with the first 5 cm of column soil and one repeater per treatment. The continuous leaching method was used by using an electrolytic well water 2.72 dS m-1. Collect the leachate daily and continue the leaching process until the arrival of the electrical conductivity of the filtration of leaching up to 3-5 dS m-1. The electrical conductivity and the concentration of positive dissolved ions (Ca, Mg, Na) were estimated in leachate and the sodium adsorption ratio (SAR) was calculated. The results showed that the best equation for describing release kinetics of the salts and sodium adsorption ratio in soil over time is the diffusion equation. Increasing the level of addition of phosphogypsum and humic acids increased the constant release velocity (K) of salts and the sodium adsorption ratio. The interaction between phosphogypsum and humic acids was also affected by the constant release velocity of salts and the sodium adsorption ratio. The constant release velocity (K) of the salts and the sodium adsorption ratio at any level of addition of phosphogypsum increased with the addition of humic acids. The highest salts release rate was 216.57 in PG3HA3, while the lowest rate was 149.48 in PG0HA0. The highest release rate of sodium adsorption ratio was 206.09 in PG3HA3, while the lowest rate was 117.23 in PG0HA0.

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Protective role of humic acids against picloram-induced genomic instability and DNA methylation in Phaseolus vulgaris

Environmental Science and Pollution Research ◽

10.1007/s11356-017-9936-y ◽

2017 ◽

Vol 24 (29) ◽

pp. 22948-22953 ◽

Cited By ~ 6

Author(s):

Mahmut Sinan Taspinar ◽

Murat Aydin ◽

Burcu Sigmaz ◽

Nalan Yildirim ◽

Guleray Agar

Keyword(s):

Dna Methylation ◽

Phaseolus Vulgaris ◽

Genomic Instability ◽

Humic Acids ◽

Protective Role

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Role of dissolved humic acids in the biodegradation of a single isomer of nonylphenol by Sphingomonas sp.

Chemosphere ◽

10.1016/j.chemosphere.2007.01.080 ◽

2007 ◽

Vol 68 (11) ◽

pp. 2172-2180 ◽

Cited By ~ 23

Author(s):

Chengliang Li ◽

Rong Ji ◽

Ralph Vinken ◽

Gregor Hommes ◽

Marko Bertmer ◽

...

Keyword(s):

Humic Acids ◽

Single Isomer

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STUDIES ON THE ADSORPTION OF BORON ON HUMIC ACIDS

Canadian Journal of Soil Science ◽

10.4141/cjss90-031 ◽

1990 ◽

Vol 70 (3) ◽

pp. 305-311 ◽

Cited By ~ 41

Author(s):

BAOHUA GU ◽

L. E. LOWE

Keyword(s):

Boric Acid ◽

Humic Acids ◽

Organic Matter Content ◽

Langmuir Adsorption Isotherm ◽

Matter Content ◽

Langmuir Equation ◽

Langmuir Adsorption ◽

Ph Values ◽

Ph Range

The adsorption of B, in the form of boric acid, was studied on three precipitated humic acids (HA), representing three distinct soil types. B adsorption by HA was strongly pH-dependent, being low and relatively constant in the pH range 3.0–6.5, increasing markedly up to a peak at near pH 9.5, and then decreasing at still higher pH values. Adsorption isotherms for pH values near 6.7 and 8.8 conformed well to the Langmuir equation. The adsorption maxima (b values), as calculated with the Langmuir equation, ranged from 73 to 207 mmol kg−1 HA at a pH near 8.8, and from 10 to 42 mmol kg−1 at a pH near 6.7. The considerable variation in B adsorption by these HA samples was attributed to "Fe + Al" contents present as contaminants in the HA. The role of HA in B adsorption is expected to be minor in most acid and near neutral soils, but may be of greater significance in soils of high pH and above average organic matter content. Key words: Boron adsorption, boric acid, humic acid, Langmuir adsorption isotherm.

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