The Study on the Dissolution Process of Oxygen and Nitrogen in Gas-Soluble Water

Abstract

In air flotation process, different gas produce different gas content of gas-soluble water. According to the difference of solubility of nitrogen and oxygen in water, the affect of the difference of molecule structures between nitrogen and oxygen on their solubility in water was discussed in the paper. Then, Two types of gas dissolution in water was introduced in the paper---gap filling and hydration. The concept of effective gap degree was proposed. And According to the effective gap degrees and hydration coefficient of nitrogen and oxygen, the change rules of the dissolved amount of oxygen and nitrogen by each type of dissolution at different temperature were obtained through a series of data fitting calculation by using Matlab. Finally, the reason for the change of the amount of gap filling and hydration in gas-soluble water caused by temperature change was also analyzed in the paper.

Conspecific chemical cues drive density-dependent metabolic suppression independently of resource intake

“…For the oxygen-depletion treatment, we used seawater with oxygen levels of 60-65% air saturation, well above the oxygen concentration recorded for this species, which is ∼20% (Lagos et al, 2017). Oxygen levels were reduced by bubbling seawater with nitrogen gas (Fan et al, 2014). The disrupted flow treatment, which simulated changes in water flow owing to the physical presence of conspecifics, was created by attaching four plastic mimics around a central focal colony (Thompson et al, 2015).…”