Mechanisms for the dissolved biochar promoted iron dissolution and consequential chromium release

Effect of organic matter and organic acid on the heavy metals, especially, chromium (Cr) release in the sediment was researched. Glucose and soluble organic starch was used as organic matter, as well, citric acid and ethylene diamine tetraacetic acid (EDTA) were simulated as organic acid. The results showed that best adsorption time of glucose on Cr was 5h, the optimal dosage was 0.1g g-1; best adsorption time of organic soluble starch was 4h, and the optimum adding amount of 0.08g/g; best adsorption time of citric acid was 5h, the best concentration 0.005mol g-1; optimal adsorption time of organic acid EDTA was 3h, the optimum adding amount of 0.12g g-1. Glucose, soluble starch and citric acid significantly effected on the release of Cr in the sediment, however, influence of EDTA on the release of Cr was not so evident.

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Psychoneuroimmunology and Natural Killer Cells: The Chromium Release Whole Blood Assay

Methods in Molecular Biology - Psychoneuroimmunology ◽

10.1007/978-1-62703-071-7_16 ◽

2012 ◽

pp. 313-324

Author(s):

Mary Ann Fletcher ◽

Zachary Barnes ◽

Gordon Broderick ◽

Nancy G. Klimas

Keyword(s):

Natural Killer Cells ◽

Natural Killer ◽

Whole Blood ◽

Whole Blood Assay ◽

Killer Cells ◽

Chromium Release ◽

Blood Assay

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Evaluation of natural killer cells activity by chromium release assay in cyclophosphamide treated CD-1 mice

Toxicology Letters ◽

10.1016/j.toxlet.2014.06.701 ◽

2014 ◽

Vol 229 ◽

pp. S208

Author(s):

Vishvesh Dalal ◽

Darpesh Gohel ◽

Mehul Pandya ◽

Poonam Mehta ◽

Sudhakar Jadhav ◽

...

Keyword(s):

Natural Killer Cells ◽

Natural Killer ◽

Chromium Release Assay ◽

Killer Cells ◽

Chromium Release ◽

Release Assay

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Tetracycline Removal by Activating Persulfate with Diatomite Loading of Fe and Ce

Molecules ◽

10.3390/molecules25235531 ◽

2020 ◽

Vol 25 (23) ◽

pp. 5531

Author(s):

Chongning Lv ◽

Jindou Shi ◽

Qiuju Tang ◽

Qi Hu

Keyword(s):

Pore Size ◽

Removal Efficiency ◽

Degradation Rate ◽

Average Pore Size ◽

Average Pore ◽

Iron Dissolution ◽

Tetracycline Degradation ◽

Good Catalytic Activity ◽

Oxidation Technology ◽

Refractory Organics

Persulfate (PS)-based oxidation technology is efficient in removing refractory organics from water. A novel diatomite (DIA) support Fe and Ce composite (Fe-Ce/DIA) was prepared for activating persulfate to degrade tetracycline in water. The Fe and Ce were uniformly loaded on DIA, and the total pore size of Fe-Ce/DIA was 6.99 × 10−2 cm3/g, and the average pore size was 12.06 nm. Fe-Ce/DIA presented a good catalytic activity and 80% tetracycline was removed under the persulfate system. The Fe-Ce/DIA also had photocatalytic activity, and the corresponding tetracycline removal efficiency was 86% under UV irradiation. Fe-Ce/DIA exhibited less iron dissolution rate compared with Fe-DIA. The tetracycline degradation rate was enhanced when the temperature increased. The optimal tetracycline removal efficiency was obtained when the conditions were of persulfate 10 mM, Fe-Ce/DIA dosage 0.02 g/L, and tetracycline concentration 50 mg/L. In addition, Fe-Ce/DIA showed a wide pH application and good reusability and stability.

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