kaolinite and sodium-nitrate

kaolinite has been researched along with sodium-nitrate* in 2 studies

Other Studies

2 other study(ies) available for kaolinite and sodium-nitrate

Article	Year
Adsorption-desorption characteristics of cadmium in variable charge soils. Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering, 2005, Volume: 40, Issue:4 Cadmium (Cd) has received considerable attention because of its association with various human health problems. The behavior of adsorption-desorption of Cd at contaminated levels in two variable charge soils were investigated. The red soil (RAR) developed on the Arenaceous rock (clayey, mixed siliceous thermic typic Dystrochrept) adsorbed more Cd2+ than the red soil (REQ) derived from the Quaternary red earths (clayey, kaolinitic thermic plinthite Aquult). The characteristics of Cd adsorption could be described by the Freundlich equation (r2 = 0.997 and 0.989, respectively, for the RAR and REQ) and the simple Langmuir adsorption equation (r2 = 0.985 and 0.977, respectively, for the RAR and REQ). The maximum adsorption values (Xm) that were obtained from the simple Langmuir model were 36.23 mmol Cd2+ kg(-1) soil and 31.15 mmol Cd2+ kg(-1) soil, respectively for the RAR and REQ. Adsorption of Cd2+ decreased soil pH by 1.28 unit for the RAR soil and 1.23 unit for the REQ soil at the highest loading. The distribution coefficient (kd) of Cd in the soil decreased exponentially with increasing Cd2+ loading. The adsorption of cadmium in the two variable charge soils was characterized by a rapid process that lasted approximately 15 min, followed by a slower but longer period. 85.5% and 79.4% of the added Cd were adsorbed within two hours by the RAR and REQ soil, respectively. More Cd2+ was adsorbed at 10 degrees C than at 25 degrees C or 40 degrees C. After five successive desorptions with 0.01 mol L(-1) NaNO3 solution, 53.3% of the total adsorbed Cd2+ in the RAR soil was desorbed and the corresponding value of the REQ soil was 46.5%, indicating that the RAR soil had a lower affinity for Cd2+ than the REQ soil at the same Cd2+ loading. Topics: Adsorption; Cadmium; China; Hydrogen-Ion Concentration; Kaolin; Models, Theoretical; Nitrates; Silicon; Soil Pollutants; Temperature; Time Factors	2005
Phage f2 desorption from clay in estuarine water using nonionic detergents, beef extract, and chaotropic agents. Canadian journal of microbiology, 1988, Volume: 34, Issue:8 Experimentally adsorbed bacteriophage f2 was eluted from clay particles in estuarine water using 1% Tween, 80.3% beef extract, and 0.3 M NaNO3 with 54% recovery. Replacing sodium nitrate with tetrasodium pyrophosphate (0.4 M) increased the recovery to 81%. Estuarine sediments treated with 1% Tween 80 revealed significantly higher male-specific phage elutions. Topics: Adsorption; Animals; Bentonite; Cattle; Coliphages; Diphosphates; Kaolin; Meat Products; Nitrates; Polysorbates; Water Microbiology	1988

Article

Year

Adsorption-desorption characteristics of cadmium in variable charge soils.

Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering, 2005, Volume: 40, Issue:4

Cadmium (Cd) has received considerable attention because of its association with various human health problems. The behavior of adsorption-desorption of Cd at contaminated levels in two variable charge soils were investigated. The red soil (RAR) developed on the Arenaceous rock (clayey, mixed siliceous thermic typic Dystrochrept) adsorbed more Cd2+ than the red soil (REQ) derived from the Quaternary red earths (clayey, kaolinitic thermic plinthite Aquult). The characteristics of Cd adsorption could be described by the Freundlich equation (r2 = 0.997 and 0.989, respectively, for the RAR and REQ) and the simple Langmuir adsorption equation (r2 = 0.985 and 0.977, respectively, for the RAR and REQ). The maximum adsorption values (Xm) that were obtained from the simple Langmuir model were 36.23 mmol Cd2+ kg(-1) soil and 31.15 mmol Cd2+ kg(-1) soil, respectively for the RAR and REQ. Adsorption of Cd2+ decreased soil pH by 1.28 unit for the RAR soil and 1.23 unit for the REQ soil at the highest loading. The distribution coefficient (kd) of Cd in the soil decreased exponentially with increasing Cd2+ loading. The adsorption of cadmium in the two variable charge soils was characterized by a rapid process that lasted approximately 15 min, followed by a slower but longer period. 85.5% and 79.4% of the added Cd were adsorbed within two hours by the RAR and REQ soil, respectively. More Cd2+ was adsorbed at 10 degrees C than at 25 degrees C or 40 degrees C. After five successive desorptions with 0.01 mol L(-1) NaNO3 solution, 53.3% of the total adsorbed Cd2+ in the RAR soil was desorbed and the corresponding value of the REQ soil was 46.5%, indicating that the RAR soil had a lower affinity for Cd2+ than the REQ soil at the same Cd2+ loading.

Topics: Adsorption; Cadmium; China; Hydrogen-Ion Concentration; Kaolin; Models, Theoretical; Nitrates; Silicon; Soil Pollutants; Temperature; Time Factors

2005

Phage f2 desorption from clay in estuarine water using nonionic detergents, beef extract, and chaotropic agents.

Canadian journal of microbiology, 1988, Volume: 34, Issue:8

Experimentally adsorbed bacteriophage f2 was eluted from clay particles in estuarine water using 1% Tween, 80.3% beef extract, and 0.3 M NaNO3 with 54% recovery. Replacing sodium nitrate with tetrasodium pyrophosphate (0.4 M) increased the recovery to 81%. Estuarine sediments treated with 1% Tween 80 revealed significantly higher male-specific phage elutions.

Topics: Adsorption; Animals; Bentonite; Cattle; Coliphages; Diphosphates; Kaolin; Meat Products; Nitrates; Polysorbates; Water Microbiology

1988