Pressure relief-dipping-microwave assisted polymerization of melamine-L-aspartic acid resin at activated carbon for purification of L-threonine fermented crude product

doi:10.1016/j.cjche.2017.12.013

Chin.J.Chem.Eng. ›› 2018, Vol. 26 ›› Issue (10): 2034-2039.DOI: 10.1016/j.cjche.2017.12.013

• Separation Science and Engineering • Previous Articles Next Articles

Pressure relief-dipping-microwave assisted polymerization of melamine-L-aspartic acid resin at activated carbon for purification of L-threonine fermented crude product

Bin Li¹, Wenshuai Tang¹, Aiguo Yuan², Guanping Jin¹

1 Anhui Key Lab of Controllable Chemical Reaction & Material Chemical Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China;
2 Shantou City Jiahe Biologic Technology Co. Ltd., Shantou 515021, China

Received:2017-08-19 Revised:2017-12-06 Online:2018-11-14 Published:2018-10-28
Contact: Guanping Jin,E-mail address:jgp@hfut.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China (U1407110), and 2014 Special Funds of Guangdong Province for Collaborative Innovation and Environment Platform Construction, Public Research and Capacity Building (2014B090901010).

Pressure relief-dipping-microwave assisted polymerization of melamine-L-aspartic acid resin at activated carbon for purification of L-threonine fermented crude product

Bin Li¹, Wenshuai Tang¹, Aiguo Yuan², Guanping Jin¹

1 Anhui Key Lab of Controllable Chemical Reaction & Material Chemical Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China;
2 Shantou City Jiahe Biologic Technology Co. Ltd., Shantou 515021, China

通讯作者: Guanping Jin,E-mail address:jgp@hfut.edu.cn
基金资助:
Supported by the National Natural Science Foundation of China (U1407110), and 2014 Special Funds of Guangdong Province for Collaborative Innovation and Environment Platform Construction, Public Research and Capacity Building (2014B090901010).

Abstract

Abstract: L-threonine (L-Thr) obtained by fermentation often contains vestigial hydrosoluble Pb(Ⅱ), Fe(Ⅱ), L-glutamic acid (L-Glu) etc., which affect the product quality. Poly melamine and L-aspartic acid (L-Asp) resin functional coconut shell activated carbon composite (PMA/AC) was prepared by a pressure relief-dipping-microwave assisted polymerization method for the simultaneous removals. The adsorption capacities of Pb(Ⅱ), Fe(Ⅱ) and L-Glu could reach to 82.34 mg·g^-1, 57.82 mg·g^-1 and 102.58 mg·g^-1 at conditions of pH 5.0, 45℃ and 4 h with an initial concentration of 0.01 mol·L^-1, respectively. The present PMA/AC was successfully used to the simultaneous removals of vestigial Pb(Ⅱ), Fe(Ⅱ) and L-Glu from the fermented crude product solution of L-Thr. Moreover, the PMA/AC was carefully characterized by FE-SEM, IR et al. analysis techniques, the results show that abundant PMA particles evenly distributed at the inner and outside surface of AC with a size of (50±20) nm.

Key words: L-Threonine fermented crude product, Simultaneous removals, Activated carbon composites, Absorption

摘要： L-threonine (L-Thr) obtained by fermentation often contains vestigial hydrosoluble Pb(Ⅱ), Fe(Ⅱ), L-glutamic acid (L-Glu) etc., which affect the product quality. Poly melamine and L-aspartic acid (L-Asp) resin functional coconut shell activated carbon composite (PMA/AC) was prepared by a pressure relief-dipping-microwave assisted polymerization method for the simultaneous removals. The adsorption capacities of Pb(Ⅱ), Fe(Ⅱ) and L-Glu could reach to 82.34 mg·g^-1, 57.82 mg·g^-1 and 102.58 mg·g^-1 at conditions of pH 5.0, 45℃ and 4 h with an initial concentration of 0.01 mol·L^-1, respectively. The present PMA/AC was successfully used to the simultaneous removals of vestigial Pb(Ⅱ), Fe(Ⅱ) and L-Glu from the fermented crude product solution of L-Thr. Moreover, the PMA/AC was carefully characterized by FE-SEM, IR et al. analysis techniques, the results show that abundant PMA particles evenly distributed at the inner and outside surface of AC with a size of (50±20) nm.

关键词: L-Threonine fermented crude product, Simultaneous removals, Activated carbon composites, Absorption

Bin Li, Wenshuai Tang, Aiguo Yuan, Guanping Jin. Pressure relief-dipping-microwave assisted polymerization of melamine-L-aspartic acid resin at activated carbon for purification of L-threonine fermented crude product[J]. Chin.J.Chem.Eng., 2018, 26(10): 2034-2039.

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Pressure relief-dipping-microwave assisted polymerization of melamine-L-aspartic acid resin at activated carbon for purification of L-threonine fermented crude product

Pressure relief-dipping-microwave assisted polymerization of melamine-L-aspartic acid resin at activated carbon for purification of L-threonine fermented crude product

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