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wchm7125金蟲 (小有名氣)
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[求助]
請(qǐng)高手幫我寫個(gè)英文摘要
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摘要:采用截留相對(duì)分子質(zhì)量為6000的聚砜中空纖維超濾膜,對(duì)相對(duì)分子質(zhì)量為20000、10000和4000的聚乙二醇溶液進(jìn)行超濾實(shí)驗(yàn),用分光光度法測(cè)定聚乙二醇濃度。探討了超濾對(duì)不同分子質(zhì)量的聚乙二醇(PEG)的去處效果,考察了料液濃度、操作流量、超濾時(shí)間對(duì)聚乙二醇去處效果的影響。得出對(duì)與本實(shí)驗(yàn)所用聚砜中空纖維超濾膜裝置分離效果最優(yōu)方案為:操作流量2.0 LPM,聚乙二醇相對(duì)分子質(zhì)量10000,料液質(zhì)量濃度20 mg/L。關(guān)鍵詞:聚乙二醇;PEG;超濾;截留率; 謝謝了! |
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Abstract:We do UF experiment of PEG20000、PEG10000、PEG4000 solution by polysulfone hollow fiber ultrafiltration membrane ,whose molecular weight with retention is 6000. And determine the concentration of polyethylene glycol through the method of Spectrophotometric.Discuss the effect to PEG of different molecular weight by ultrafiltration. Study the feed concertration,flow rates,ultrafiltration time to place the effect of PEG.And we determine the optimal solution peration flow of 2.0 LPM,the PEG molecular weight of 10000,liquid concerntaion of 20mg/L.Key words EG;ultrafiltration;rejectio |
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