Graphene oxide composite membrane accelerates organic pollutant degradation by Shewanella bacteria

Degradation of various organic pollutants by bacteria has been proved to be an economical and environmentally friendly method. The key challenge in making these technologies widely available is their low degradation efficiency. Here, we report a composite membrane composed of graphene oxide and poly...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Zhi Li, Jun Zhao, Bianhua Liu, Linlin Yang, Guangmei Han, Fan Yang, Shuai Han, Zhenyang Wang, Zhongping Zhang
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	congo red degradation efficiency enhance graphene oxide recyclability shewanella bacteria Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/165013d7c7b0459b9459a164ee99e82c
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:165013d7c7b0459b9459a164ee99e82c
record_format	dspace
spelling	oai:doaj.org-article:165013d7c7b0459b9459a164ee99e82c2021-11-06T11:18:38ZGraphene oxide composite membrane accelerates organic pollutant degradation by Shewanella bacteria0273-12231996-973210.2166/wst.2021.285https://doaj.org/article/165013d7c7b0459b9459a164ee99e82c2021-08-01T00:00:00Zhttp://wst.iwaponline.com/content/84/4/1037https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Degradation of various organic pollutants by bacteria has been proved to be an economical and environmentally friendly method. The key challenge in making these technologies widely available is their low degradation efficiency. Here, we report a composite membrane composed of graphene oxide and polyvinyl alcohol (GO-PVA) which can markedly enhance the efficiency and rate of Shewanella bacteria to degrade Congo red (CR). The degradation efficiency of Shewanella bacteria alone on CR solution was about 42% at 72 h. After the addition of the GO-PVA membrane, the degradation efficiency reached 91% at the degradation time at 36 h. The degradation efficiency of CR was increased by two times and the degradation rate was increased by four times in the presence of GO-PVA membrane and Shewanella bacteria compared to Shewanella bacteria alone. This indicates that the CR could be rapidly and completely degraded by increasing the input amounts of GO-PVA membrane in the process of Shewanella algae degradation of CR. Moreover, the GO-PVA membrane showed good recyclability and reusability. The biocatalysts performance of the GO-PVA membrane did not decrease after 10 cycles. Furthermore, the role of the GO-PVA membrane in the degradation process and the degradation products of CR were discussed. HIGHLIGHTS The efficiency of Shewanella bacteria to degrade CR is about 42% at 72 h.; The GO-PVA can significantly improve the degradation rate and efficiency of CR.; The degradation rate was increased by four times and the efficiency was increased by about two times.; The GO in the GO-PVA plays as a redox mediator in the degradation of CR.; The GO-PVA shows good recyclability and reusability.;Zhi LiJun ZhaoBianhua LiuLinlin YangGuangmei HanFan YangShuai HanZhenyang WangZhongping ZhangIWA Publishingarticlecongo red degradationefficiency enhancegraphene oxiderecyclabilityshewanella bacteriaEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 4, Pp 1037-1047 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	congo red degradation efficiency enhance graphene oxide recyclability shewanella bacteria Environmental technology. Sanitary engineering TD1-1066
spellingShingle	congo red degradation efficiency enhance graphene oxide recyclability shewanella bacteria Environmental technology. Sanitary engineering TD1-1066 Zhi Li Jun Zhao Bianhua Liu Linlin Yang Guangmei Han Fan Yang Shuai Han Zhenyang Wang Zhongping Zhang Graphene oxide composite membrane accelerates organic pollutant degradation by Shewanella bacteria
description	Degradation of various organic pollutants by bacteria has been proved to be an economical and environmentally friendly method. The key challenge in making these technologies widely available is their low degradation efficiency. Here, we report a composite membrane composed of graphene oxide and polyvinyl alcohol (GO-PVA) which can markedly enhance the efficiency and rate of Shewanella bacteria to degrade Congo red (CR). The degradation efficiency of Shewanella bacteria alone on CR solution was about 42% at 72 h. After the addition of the GO-PVA membrane, the degradation efficiency reached 91% at the degradation time at 36 h. The degradation efficiency of CR was increased by two times and the degradation rate was increased by four times in the presence of GO-PVA membrane and Shewanella bacteria compared to Shewanella bacteria alone. This indicates that the CR could be rapidly and completely degraded by increasing the input amounts of GO-PVA membrane in the process of Shewanella algae degradation of CR. Moreover, the GO-PVA membrane showed good recyclability and reusability. The biocatalysts performance of the GO-PVA membrane did not decrease after 10 cycles. Furthermore, the role of the GO-PVA membrane in the degradation process and the degradation products of CR were discussed. HIGHLIGHTS The efficiency of Shewanella bacteria to degrade CR is about 42% at 72 h.; The GO-PVA can significantly improve the degradation rate and efficiency of CR.; The degradation rate was increased by four times and the efficiency was increased by about two times.; The GO in the GO-PVA plays as a redox mediator in the degradation of CR.; The GO-PVA shows good recyclability and reusability.;
format	article
author	Zhi Li Jun Zhao Bianhua Liu Linlin Yang Guangmei Han Fan Yang Shuai Han Zhenyang Wang Zhongping Zhang
author_facet	Zhi Li Jun Zhao Bianhua Liu Linlin Yang Guangmei Han Fan Yang Shuai Han Zhenyang Wang Zhongping Zhang
author_sort	Zhi Li
title	Graphene oxide composite membrane accelerates organic pollutant degradation by Shewanella bacteria
title_short	Graphene oxide composite membrane accelerates organic pollutant degradation by Shewanella bacteria
title_full	Graphene oxide composite membrane accelerates organic pollutant degradation by Shewanella bacteria
title_fullStr	Graphene oxide composite membrane accelerates organic pollutant degradation by Shewanella bacteria
title_full_unstemmed	Graphene oxide composite membrane accelerates organic pollutant degradation by Shewanella bacteria
title_sort	graphene oxide composite membrane accelerates organic pollutant degradation by shewanella bacteria
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/165013d7c7b0459b9459a164ee99e82c
work_keys_str_mv	AT zhili grapheneoxidecompositemembraneacceleratesorganicpollutantdegradationbyshewanellabacteria AT junzhao grapheneoxidecompositemembraneacceleratesorganicpollutantdegradationbyshewanellabacteria AT bianhualiu grapheneoxidecompositemembraneacceleratesorganicpollutantdegradationbyshewanellabacteria AT linlinyang grapheneoxidecompositemembraneacceleratesorganicpollutantdegradationbyshewanellabacteria AT guangmeihan grapheneoxidecompositemembraneacceleratesorganicpollutantdegradationbyshewanellabacteria AT fanyang grapheneoxidecompositemembraneacceleratesorganicpollutantdegradationbyshewanellabacteria AT shuaihan grapheneoxidecompositemembraneacceleratesorganicpollutantdegradationbyshewanellabacteria AT zhenyangwang grapheneoxidecompositemembraneacceleratesorganicpollutantdegradationbyshewanellabacteria AT zhongpingzhang grapheneoxidecompositemembraneacceleratesorganicpollutantdegradationbyshewanellabacteria
_version_	1718443715843850240

Graphene oxide composite membrane accelerates organic pollutant degradation by Shewanella bacteria

Ejemplares similares