Recovery of butyl acetate in wastewater of penicillin plant by solvent sublation I. Experimental study

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	Recovery of butyl acetate in wastewater of penicillin plant by solvent sublation I. Experimental study
	Sun, XH ; Chang, ZD ; Liu, HZ ; Wang, FL ; Zhang, YX
刊名	SEPARATION SCIENCE AND TECHNOLOGY
	2005
卷号	40 期号:4 页码:927-940
关键词	solvent sublation butyl acetate penicillin sieve plate column wastewater back mixing
ISSN号	0149-6395
其他题名	Sep. Sci. Technol.
中文摘要	Recovery of butyl acetate (BA) in the wastewater from solvent extraction of penicillin by solvent sublation into n-nonane is studied. Emulsification at water-solvent interface in the sublation was discussed, and nonpolar n-nonane was representatively used as the immiscible organic solvent to minimize the emulsification. Effects of operation variables, such as gas flow rate, Q(a), and initial solvent volume, v(oi), were explored. Gas flow rate, Q(a), was an important operation parameter and initial volume of solvent, v(oi), had a little effect on the sublation efficiency, E-ss, which could be more than 65% under optimal operation conditions with semibatch sublation after about 180 min operation. Experimental results also showed the axial concentration of BA along the column height first increased and then decreased from bottom to top because of the mutual effect of diverse mass transports. With initial concentration of BA in the wastewater of about 1%, the volume of solvent, v,, could be increased by more than 30% at the end of the sublation. Qualified butyl acetate could be obtained through distillation and n-nonane obtained could be recycled in the solvent sublation. Air stripping was not so effective as sublation in the recovery of BA. The sublation was carried out in a sieve plate column. Experimental results showed the sieve plate could increase the axial Peclet number of water in sublation column, or minimize the back mixing of the aqueous phase in the sublation.
英文摘要	Recovery of butyl acetate (BA) in the wastewater from solvent extraction of penicillin by solvent sublation into n-nonane is studied. Emulsification at water-solvent interface in the sublation was discussed, and nonpolar n-nonane was representatively used as the immiscible organic solvent to minimize the emulsification. Effects of operation variables, such as gas flow rate, Q(a), and initial solvent volume, v(oi), were explored. Gas flow rate, Q(a), was an important operation parameter and initial volume of solvent, v(oi), had a little effect on the sublation efficiency, E-ss, which could be more than 65% under optimal operation conditions with semibatch sublation after about 180 min operation. Experimental results also showed the axial concentration of BA along the column height first increased and then decreased from bottom to top because of the mutual effect of diverse mass transports. With initial concentration of BA in the wastewater of about 1%, the volume of solvent, v,, could be increased by more than 30% at the end of the sublation. Qualified butyl acetate could be obtained through distillation and n-nonane obtained could be recycled in the solvent sublation. Air stripping was not so effective as sublation in the recovery of BA. The sublation was carried out in a sieve plate column. Experimental results showed the sieve plate could increase the axial Peclet number of water in sublation column, or minimize the back mixing of the aqueous phase in the sublation.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Chemistry, Multidisciplinary ; Engineering, Chemical
研究领域[WOS]	Chemistry ; Engineering
关键词[WOS]	BUBBLE-COLUMN REACTORS ; REFRACTORY ORGANICS ; REMOVAL ; AERATION ; REGIME ; FLOW ; GAS
收录类别	SCI
原文出处	://WOS:000227877800011
语种	英语
WOS记录号	WOS:000227877800011
公开日期	2013-10-25
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/4241]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.Chinese Acad Sci, Lab Separat Sci & Engn, State Key Lab Biochem Engn, Inst Proc Engn,Grad Sch, Beijing 100080, Peoples R China 2.N China Pharmaceut Corp Ltd, Shijiazhuang, Peoples R China
推荐引用方式 GB/T 7714	Sun, XH,Chang, ZD,Liu, HZ,et al. Recovery of butyl acetate in wastewater of penicillin plant by solvent sublation I. Experimental study[J]. SEPARATION SCIENCE AND TECHNOLOGY,2005,40(4):927-940.
APA	Sun, XH,Chang, ZD,Liu, HZ,Wang, FL,&Zhang, YX.(2005).Recovery of butyl acetate in wastewater of penicillin plant by solvent sublation I. Experimental study.SEPARATION SCIENCE AND TECHNOLOGY,40(4),927-940.
MLA	Sun, XH,et al."Recovery of butyl acetate in wastewater of penicillin plant by solvent sublation I. Experimental study".SEPARATION SCIENCE AND TECHNOLOGY 40.4(2005):927-940.