Disinfection By-Products Foramtion Potential of Twenty Amino Acids

DOI

10.2991/icmaee-14.2014.14How to use a DOI?

Keywords

disinfection by-products, DBPs formation potential, organic nitrogenous compounds

Abstract

DBPs formation potential, including THMs, HAAs, HKs, chloropicrin, and chloral hydrate, of 20 amino acids was evaluated. Chlorination experiments were carried out at pH=8.0±0.1 by using phosphates buffer and performed at Cl2:N=8:1(molar ratio) at 20±1°C for a reaction duration of 24h. Chlorination experiments shown the DBPs formation potential of 20 amino acids differed considerably and without any obvious relationship to TOC contents. THMs, HAAs, HANs, HKs, chloropicrin, and chloral hydrate formation potential were in the range of 0.001~0.467mol/mol, 0~0.669mol/mol, 0.005~1.170mmol/mol, 0.031~9.270mmol/mol, 0~1.380mmol/mol, and 0.059~39.080mmol/L, respectively. THMs and HAAs were two largest classes of DBPs formed which accounts for 61~99% of total DBPs detected in the experiments except for Glu(43%) and Ile(32%). However, unlike NOM and resorcinol, THMs and HAAs formation were not related which indicated that the THMs and HAAs formation paths were different as compared with NOM. Certain amount of N-DBPs were found, but the formation potential are relatively small when compared with THMs and HAAs.

Copyright

© 2014, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Hui Tao
AU  - Bo Feng
AU  - Liangsheng Chen
AU  - Wenjun Li
AU  - Wei Chen
AU  - Min Sun
PY  - 2014/03
DA  - 2014/03
TI  - Disinfection By-Products Foramtion Potential of Twenty Amino Acids
BT  - Proceedings of the International Conference on Material and Environmental Engineering (ICMAEE 2014)
PB  - Atlantis Press
SP  - 51
EP  - 55
SN  - 1951-6851
UR  - https://doi.org/10.2991/icmaee-14.2014.14
DO  - 10.2991/icmaee-14.2014.14
ID  - Tao2014/03
ER  -