【摘要】：對碳素纖維進行氧化改性,利用改性后的碳素纖維處理近岸污染海水,重點研究了改性碳素纖維對海水中活性磷酸鹽和活性硅酸鹽的吸附作用。考察了碳素纖維液相改性時間、碳素纖維投加量、活性磷酸鹽初始濃度、活性硅酸鹽初始濃度、吸附時間、海況、pH值等單因素對近岸海洋污染物磷酸鹽、硅酸鹽吸附效果的影響。研究結果表明:改性碳素纖維對硅酸鹽的吸附效果較好,去除率可達70%,對活性磷酸鹽的去除率為31%左右。通過正交實驗確定改性碳素纖維材料修復模擬近岸海水的優(yōu)化條件為:碳素纖維改性時間為1.5 h,投加量為0.01 g,硅酸鹽初始濃度為3mg/L,磷酸鹽初始濃度為20 mg/L,海況為3級,pH值為8,吸附時間為3 h。在此條件下,碳素纖維對磷酸鹽的去除率可達31.06%,硅酸鹽去除率可達70.88%。
[Abstract]:The carbon fiber was oxidized and the modified carbon fiber was used to treat the inshore polluted sea water. The adsorption of the modified carbon fiber to the active phosphate and silicate in seawater was studied. The effects of single factors, such as liquid modification time of carbon fiber, dosage of carbon fiber, initial concentration of active phosphate, initial concentration of active silicate, adsorption time, sea condition and pH value, on the inshore marine pollutant phosphate were investigated. Effect of silicate adsorption. The results show that the modified carbon fiber has a good adsorption effect on silicate, the removal rate can reach 70%, and the removal rate of active phosphate is about 31%. The optimum conditions for the restoration of simulated coastal seawater with modified carbon fiber materials were determined by orthogonal experiment: the modification time of carbon fiber was 1.5 h, the dosage was 0.01 g, the initial concentration of silicate was 3 mg / L, The initial concentration of phosphate is 20 mg/L, the sea condition is 3, the pH value is 8, and the adsorption time is 3 h. Under these conditions, the removal rate of phosphate and silicate can reach 31.06 and 70.88 respectively.
【作者單位】： 大連海洋大學海洋科技與環(huán)境學院;
【基金】：國家海洋局海洋公益性行業(yè)科研專項經(jīng)費項目(20130500) 遼寧省大型儀器設備共享服務能力建設補貼項目(2016LD0105)
【分類號】：X55

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