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

Bin Li; Wenshuai Tang; Aiguo Yuan; Guanping Jin

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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

Separation Science and Engineering | Updated：2026-01-06

- 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
- 中国化学工程学报（英文版） 2018年26卷第10期页码：2034-2039
- Affiliations：
  
  2 Shantou City Jiahe Biologic Technology Co. Ltd.,Shantou,China,515021
- Author bio：
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  中图分类号：
- 纸质出版：2018
- Accepted：
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Bin Li, Wenshuai Tang, Aiguo Yuan, 等. Pressure relief-dipping-microwave assisted polymerization of melamine-L-aspartic acid resin at activated carbon for purification of L-threonine fermented crude product[J]. 中国化学工程学报（英文版）, 2018,26(10):2034-2039.

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.
Bin Li, Wenshuai Tang, Aiguo Yuan, 等. Pressure relief-dipping-microwave assisted polymerization of melamine-L-aspartic acid resin at activated carbon for purification of L-threonine fermented crude product[J]. 中国化学工程学报（英文版）, 2018,26(10):2034-2039. DOI：

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. DOI：

摘要

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.

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