[Effect of surfactant on the evaporation of p-chloronitrobenzene and naphthalene in the turbulent process].
Effect of surfactant on the evaporation of p-chloronitrobenzene and naphthalene in the turbulent process was studied in order to understand the effect of surfactant on the evaporation of complex contaminants in dynamic water system. Sodium dodecyl sulfate (SDS), cetyltrimethyl ammonium bromide (CTMAB) and polyethylene glycol sorbitan monolaurate (Tween 20) were used in the experiment. The results showed that the evaporation of p-chloronitrobenzene and naphthalene from surfactant solution in set turbulence intensity followed the first kinetic equation and all the correlation coefficients were above 0.99. The evaporative loss velocity of component was increased in dynamic water,while it decreased in surfactant solution, comparing with static pure water. The combined impact of these two factors was mainly presented promoting. When the turbulence intensity was above 39 r/min and 65 r/min respectively and the concentrations of surfactants were set from 150 mg/L to 2000 mg/L, the corresponding evaporative loss velocity of naphthalene and p-chloronitrobenzene both increased clearly. The evaporative loss velocity of p-chloronitrobenzene and naphthalene in the same turbulence intensity were decreased because of the straining ability of surfactant with the rule: CTMAB > Tween 20 > SDS. The impact of both surfactant and turbulence on naphthalene (with higher H) was more distinct than p-chloronitrobenzene (with lower H).
Yao
Chao-ying
CY
Department of Environmental Science, Zhejiang University, Hangzhou 310028, China. ycy5816@126.com
Ma
Zhan-yu
ZY
Sun
Xiao-hui
XH
Shen
Xue-you
XY
D009281:Naphthalenes / Q000737:chemistry*; D009578:Nitrobenzenes / Q000737:chemistry*; D011136:Polysorbates / Q000737:chemistry; D012967:Sodium Dodecyl Sulfate / Q000737:chemistry; D013501:Surface-Active Agents / Q000737:chemistry*; D014835:Volatilization / Q000187:drug effects; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods*
D009281:Naphthalenes; D009578:Nitrobenzenes; D011136:Polysorbates; D013501:Surface-Active Agents; D014874:Water Pollutants, Chemical; C031721:naphthalene; D012967:Sodium Dodecyl Sulfate; C010407:4-chloronitrobenzene