化工进展
化工進展
화공진전
CHEMICAL INDUSTRY AND ENGINEERING PROGRESS
2015年
5期
1433-1439
,共7页
阳离子淀粉%二甲基二烯丙基氯化铵(DMDAAC)%凹凸棒土%复配%絮凝
暘離子澱粉%二甲基二烯丙基氯化銨(DMDAAC)%凹凸棒土%複配%絮凝
양리자정분%이갑기이희병기록화안(DMDAAC)%요철봉토%복배%서응
cationicstarch%dimethyl diallylammonium chloride%attapulgite%compound%flocculate
二元接枝改性阳离子淀粉（CS-DMDAAC）/凹凸棒土是一种新型复合絮凝剂，用于小球藻的絮凝采收环节，在环保、化工、材料等领域具有更广阔的应用前景。为提高小球藻的絮凝采收率，通过单因素实验考察阳离子淀粉（CS）和CS-DMDAAC对小球藻的絮凝效果，并对CS-DMDAAC与凹凸棒土进行复配，通过单因素实验探讨了 pH 值、CS-DMDAAC/凹凸棒土复配比、阳离子淀粉投加量及沉降时间对小球藻絮凝率的影响，在单因素实验的基础上，以正交试验法优化CS-DMDAAC/凹凸棒土对小球藻的絮凝工艺。用扫描电镜（SEM）对凹凸棒土、CS-DMDAAC/凹凸棒土和CS-DMDAAC/凹凸棒土吸附小球藻进行表征，实验结果表明最佳絮凝工艺条件为：pH=9，CS-DMDAAC/凹凸棒土复配比为1∶9，阳离子淀粉投加量为0.04g，沉降时间为210min。在该条件下进行平行实验，对小球藻的絮凝率最高达到99.1%。研究结果对CS-DMDAAC的改性以及藻类的絮凝采收具有参考价值。
二元接枝改性暘離子澱粉（CS-DMDAAC）/凹凸棒土是一種新型複閤絮凝劑，用于小毬藻的絮凝採收環節，在環保、化工、材料等領域具有更廣闊的應用前景。為提高小毬藻的絮凝採收率，通過單因素實驗攷察暘離子澱粉（CS）和CS-DMDAAC對小毬藻的絮凝效果，併對CS-DMDAAC與凹凸棒土進行複配，通過單因素實驗探討瞭 pH 值、CS-DMDAAC/凹凸棒土複配比、暘離子澱粉投加量及沉降時間對小毬藻絮凝率的影響，在單因素實驗的基礎上，以正交試驗法優化CS-DMDAAC/凹凸棒土對小毬藻的絮凝工藝。用掃描電鏡（SEM）對凹凸棒土、CS-DMDAAC/凹凸棒土和CS-DMDAAC/凹凸棒土吸附小毬藻進行錶徵，實驗結果錶明最佳絮凝工藝條件為：pH=9，CS-DMDAAC/凹凸棒土複配比為1∶9，暘離子澱粉投加量為0.04g，沉降時間為210min。在該條件下進行平行實驗，對小毬藻的絮凝率最高達到99.1%。研究結果對CS-DMDAAC的改性以及藻類的絮凝採收具有參攷價值。
이원접지개성양리자정분（CS-DMDAAC）/요철봉토시일충신형복합서응제，용우소구조적서응채수배절，재배보、화공、재료등영역구유경엄활적응용전경。위제고소구조적서응채수솔，통과단인소실험고찰양리자정분（CS）화CS-DMDAAC대소구조적서응효과，병대CS-DMDAAC여요철봉토진행복배，통과단인소실험탐토료 pH 치、CS-DMDAAC/요철봉토복배비、양리자정분투가량급침강시간대소구조서응솔적영향，재단인소실험적기출상，이정교시험법우화CS-DMDAAC/요철봉토대소구조적서응공예。용소묘전경（SEM）대요철봉토、CS-DMDAAC/요철봉토화CS-DMDAAC/요철봉토흡부소구조진행표정，실험결과표명최가서응공예조건위：pH=9，CS-DMDAAC/요철봉토복배비위1∶9，양리자정분투가량위0.04g，침강시간위210min。재해조건하진행평행실험，대소구조적서응솔최고체도99.1%。연구결과대CS-DMDAAC적개성이급조류적서응채수구유삼고개치。
Cationic starch-dimethyl diallylammonium chloride (CS-DMDAAC)/attapulgite is a new composite flocculant. It is used in the flocculation and recovery process ofchlorella and has a much more broader application prospect in environmental protection,chemical engineering and material industry. In this paper,CS-DMDAAC copolymer was selected by comparing CS-DMDAAC with cationicstarch (CS) in terms of the flocculating effects onchlorella,and then this composite starch was blended with attapulgite at a specific ratio. The effect of pH,ratio of CS-DMDAAC/ attapulgite,dosage of composite starch and deposition time on the flocculation rate ofchlorellawas discussed. On the basis of single factor experiment,the flocculation process of CS-DMDAAC/ attapulgite onchlorella was optimized by means of orthogonal test. The shape of attapulgite, CS-DMDAAC/attapulgite and the mixture of composite flocculant andchlorella were analyzed by scanning electron microscopy(SEM). The optimal conditions were:pH=9,CS-DMDAAC/attapulgite ratio in flocculant 1∶9,dosage of composite starch 0.04g and deposition time 210 min. Parallel experiments were made under the optimal conditions,and flocculation rate ofchlorella was up to 99.1%. The results of this paper could provide valuable reference for modifications of CS-DMDAAC and recovery ofalga.
