Mesoporous structure regulation of activated carbons and effects on the synergistic efficacy of synchronous adsorption and bio-degradation in biological activated carbon process

Mesoporous activated carbon MCGL-4 was tailored for simultaneous enhancement of adsorption and bio-degradation by multistage depth-activation (MDA). Synergistic efficacy of synchronous adsorption and bio-degradation was evaluated in pilot-scale bio-enhanced activated carbon (BEAC) system. Results id...

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Autores principales:	Xu-Jin Gong, Yu-Qi Dong, Wei-Guang Li
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	activated carbon adsorption bio-degradation bio-enhanced activated carbon (beac) natural organic matters pore-structure regulation Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
Acceso en línea:	https://doaj.org/article/e4f2dc681e304981b56ad5a7f428a742
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spelling	oai:doaj.org-article:e4f2dc681e304981b56ad5a7f428a7422021-11-06T07:18:25ZMesoporous structure regulation of activated carbons and effects on the synergistic efficacy of synchronous adsorption and bio-degradation in biological activated carbon process1606-97491607-079810.2166/ws.2020.293https://doaj.org/article/e4f2dc681e304981b56ad5a7f428a7422021-08-01T00:00:00Zhttp://ws.iwaponline.com/content/21/5/2058https://doaj.org/toc/1606-9749https://doaj.org/toc/1607-0798Mesoporous activated carbon MCGL-4 was tailored for simultaneous enhancement of adsorption and bio-degradation by multistage depth-activation (MDA). Synergistic efficacy of synchronous adsorption and bio-degradation was evaluated in pilot-scale bio-enhanced activated carbon (BEAC) system. Results identified that MCGL-4 obtains synchronously well-developed meso- (0.7605 cm3/g), micro- (0.2655 cm3/g) and macro-porous (0.143 cm3/g) structures. Higher volume during 20.4–208.2 Å (0.6848 cm3/g) ensured higher adsorption capacities for natural organic matters (NOM). The initial immobilized biomass and stabilities on MCGL-4 were also significantly promoted. Rapid small-scale column tests system (RSSCTs) tests showed that adsorption capacities for humic-like organics were 67,725.32 mg·DOC/(kg·carbon) at 39.50 m3·H2O/(kg·carbon). In BEAC system, MCGL-4 achieved higher removal efficiency for fulvic acid, humic acid and aromatic organic matters than commercial carbons. At 39.50 m3·H2O/(kg·carbon), cumulative uptake of organic-pollutants achieved by MCGL-4 was 94,850.51 mg·DOC/(kg·carbon). The proportion occupied by bio-degradation were 31,674.70 mg·DOC/(kg·carbon). It also confirmed that bio-degradation ability was much higher than commercial carbons after mesoporous structures regulation by MDA process. HIGHLIGHTS MCGL-4 was tailored for simultaneous bio-enhancement and adsorption by multistage depth-activation.; MCGL-4 is a promising adsorbent for effective removal of natural organic matters from water.; MCGL-4 was more conductive to simultaneous biodegradation and adsorption of organic-pollutants.; Mesopores (20.4 ∼ 208.2 Å) played important role in adsorption of humic-like organics.;Xu-Jin GongYu-Qi DongWei-Guang LiIWA Publishingarticleactivated carbonadsorptionbio-degradationbio-enhanced activated carbon (beac)natural organic matterspore-structure regulationWater supply for domestic and industrial purposesTD201-500River, lake, and water-supply engineering (General)TC401-506ENWater Supply, Vol 21, Iss 5, Pp 2058-2074 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	activated carbon adsorption bio-degradation bio-enhanced activated carbon (beac) natural organic matters pore-structure regulation Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
spellingShingle	activated carbon adsorption bio-degradation bio-enhanced activated carbon (beac) natural organic matters pore-structure regulation Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506 Xu-Jin Gong Yu-Qi Dong Wei-Guang Li Mesoporous structure regulation of activated carbons and effects on the synergistic efficacy of synchronous adsorption and bio-degradation in biological activated carbon process
description	Mesoporous activated carbon MCGL-4 was tailored for simultaneous enhancement of adsorption and bio-degradation by multistage depth-activation (MDA). Synergistic efficacy of synchronous adsorption and bio-degradation was evaluated in pilot-scale bio-enhanced activated carbon (BEAC) system. Results identified that MCGL-4 obtains synchronously well-developed meso- (0.7605 cm3/g), micro- (0.2655 cm3/g) and macro-porous (0.143 cm3/g) structures. Higher volume during 20.4–208.2 Å (0.6848 cm3/g) ensured higher adsorption capacities for natural organic matters (NOM). The initial immobilized biomass and stabilities on MCGL-4 were also significantly promoted. Rapid small-scale column tests system (RSSCTs) tests showed that adsorption capacities for humic-like organics were 67,725.32 mg·DOC/(kg·carbon) at 39.50 m3·H2O/(kg·carbon). In BEAC system, MCGL-4 achieved higher removal efficiency for fulvic acid, humic acid and aromatic organic matters than commercial carbons. At 39.50 m3·H2O/(kg·carbon), cumulative uptake of organic-pollutants achieved by MCGL-4 was 94,850.51 mg·DOC/(kg·carbon). The proportion occupied by bio-degradation were 31,674.70 mg·DOC/(kg·carbon). It also confirmed that bio-degradation ability was much higher than commercial carbons after mesoporous structures regulation by MDA process. HIGHLIGHTS MCGL-4 was tailored for simultaneous bio-enhancement and adsorption by multistage depth-activation.; MCGL-4 is a promising adsorbent for effective removal of natural organic matters from water.; MCGL-4 was more conductive to simultaneous biodegradation and adsorption of organic-pollutants.; Mesopores (20.4 ∼ 208.2 Å) played important role in adsorption of humic-like organics.;
format	article
author	Xu-Jin Gong Yu-Qi Dong Wei-Guang Li
author_facet	Xu-Jin Gong Yu-Qi Dong Wei-Guang Li
author_sort	Xu-Jin Gong
title	Mesoporous structure regulation of activated carbons and effects on the synergistic efficacy of synchronous adsorption and bio-degradation in biological activated carbon process
title_short	Mesoporous structure regulation of activated carbons and effects on the synergistic efficacy of synchronous adsorption and bio-degradation in biological activated carbon process
title_full	Mesoporous structure regulation of activated carbons and effects on the synergistic efficacy of synchronous adsorption and bio-degradation in biological activated carbon process
title_fullStr	Mesoporous structure regulation of activated carbons and effects on the synergistic efficacy of synchronous adsorption and bio-degradation in biological activated carbon process
title_full_unstemmed	Mesoporous structure regulation of activated carbons and effects on the synergistic efficacy of synchronous adsorption and bio-degradation in biological activated carbon process
title_sort	mesoporous structure regulation of activated carbons and effects on the synergistic efficacy of synchronous adsorption and bio-degradation in biological activated carbon process
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/e4f2dc681e304981b56ad5a7f428a742
work_keys_str_mv	AT xujingong mesoporousstructureregulationofactivatedcarbonsandeffectsonthesynergisticefficacyofsynchronousadsorptionandbiodegradationinbiologicalactivatedcarbonprocess AT yuqidong mesoporousstructureregulationofactivatedcarbonsandeffectsonthesynergisticefficacyofsynchronousadsorptionandbiodegradationinbiologicalactivatedcarbonprocess AT weiguangli mesoporousstructureregulationofactivatedcarbonsandeffectsonthesynergisticefficacyofsynchronousadsorptionandbiodegradationinbiologicalactivatedcarbonprocess
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Mesoporous structure regulation of activated carbons and effects on the synergistic efficacy of synchronous adsorption and bio-degradation in biological activated carbon process

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