|Table of Contents|

Utilization of Wastewater from the Production of Glycolic Acid(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2006年04期
Page:
45-49
Research Field:
Publishing date:

Info

Title:
Utilization of Wastewater from the Production of Glycolic Acid
Author(s):
HAN Hong; XU Mingli; WANG Yuping; PENG Panying
School of Chemistry and Environmental Science,Nanjing Normal University,Nanjing 210097,China
Keywords:
w astew ater;  g lyco lic ac id;  amm onium sulfa te;  concentrated crysta llization process;  com plex ex traction
PACS:
X783
DOI:
-
Abstract:
Apply ing concentra ted cry sta llization process to recla im amm on ium su lfate from the w astewa ter from the production of g ly co lic ac id, the paper stud ied the effects o f dehydra tion ratio to the recovery o f amm onium su lfate and abso rption loss o f g lyco lic ac id in amm on ium sulfa te crysta,l and ascerta ined the fitting recover ing techn ical cond itions. By w ay o f comp lex ex traction w ith PCW-6 ex tractant to recover g lycolic ac id from the w astew ater, the paper d iscussed d ifferent effects of each factor ( such as ac id ity, extractant concen tration, o il-wa ter ra tio, tem pe rature, and equilibr ium time) to the ex trac ting e ffic iency. U singNaOH so lution as str ipping agent, the paper stud ied the effec t o f N aOH dosage to the stripping e fficiency and so on, and ascerta ined and optim ized the exper im enta l cond itions. The result shows that under the ascerta ined cond itions the recov ery o f ammon ium su lfate approx im ates to 100%, and the percent recovery of g lyco lic ac id com es to 92%.

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Last Update: 2013-04-29