Integration of microbial reductive dehalogenation with persulfate activation and oxidation (Bio-RD-PAO) for complete attenuation of organohalides

doi:10.1007/s11783-021-1457-8

Front. Environ. Sci. Eng.

2022, Vol. 16

Issue (2) : 22 https://doi.org/10.1007/s11783-021-1457-8

REVIEW ARTICLE

Integration of microbial reductive dehalogenation with persulfate activation and oxidation (Bio-RD-PAO) for complete attenuation of organohalides

Rifeng Wu, Shanquan Wang(

)

Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou 510006, China

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Abstract

•Bio-RD-PAO can effectively and extensively remove organohalides.

•Bio-RD alone effectively dehalogenate the highly-halogenated organohalides.

•PAO alone is efficient in degrading the lowly-halogenated organohalides.

•The impacts of PAO on organohalide-respiring microbial communities remain elusive.

•Bio-RD-PAO provides a promising solution for remediation of organohalide pollution.

Due to the toxicity of bioaccumulative organohalides to human beings and ecosystems, a variety of biotic and abiotic remediation methods have been developed to remove organohalides from contaminated environments. Bioremediation employing organohalide-respiring bacteria (OHRB)-mediated microbial reductive dehalogenation (Bio-RD) represents a cost-effective and environmentally friendly approach to attenuate highly-halogenated organohalides, specifically organohalides in soil, sediment and other anoxic environments. Nonetheless, many factors severely restrict the implications of OHRB-based bioremediation, including incomplete dehalogenation, low abundance of OHRB and consequent low dechlorination activity. Recently, the development of in situ chemical oxidation (ISCO) based on sulfate radicals (SO₄^·⁻) via the persulfate activation and oxidation (PAO) process has attracted tremendous research interest for the remediation of lowly-halogenated organohalides due to its following advantages, e.g., complete attenuation, high reactivity and no selectivity to organohalides. Therefore, integration of OHRB-mediated Bio-RD and subsequent PAO (Bio-RD-PAO) may provide a promising solution to the remediation of organohalides. In this review, we first provide an overview of current progress in Bio-RD and PAO and compare their limitations and advantages. We then critically discuss the integration of Bio-RD and PAO (Bio-RD-PAO) for complete attenuation of organohalides and its prospects for future remediation applications. Overall, Bio-RD-PAO opens up opportunities for complete attenuation and consequent effective in situ remediation of persistent organohalide pollution.

Keywords Bio-RD-PAO Microbial reductive dehalogenation Persulfate Organohalide respiration Complete attenuation

Corresponding Author(s): Shanquan Wang

Issue Date: 11 June 2021

Cite this article:

Rifeng Wu,Shanquan Wang. Integration of microbial reductive dehalogenation with persulfate activation and oxidation (Bio-RD-PAO) for complete attenuation of organohalides[J]. Front. Environ. Sci. Eng., 2022, 16(2): 22.

URL:

https://academic.hep.com.cn/fese/EN/10.1007/s11783-021-1457-8
https://academic.hep.com.cn/fese/EN/Y2022/V16/I2/22

Fig.1 Observed pathways for PCDD/Fs dechlorination in Dehalococcoides mccartyi strains and enrichment cultures. Major and minor dechlorination pathways are marked with thick and thin arrows, respectively.

Tab.1 Dechlorination of typical organohalides and their associated OHRB and RDases

Fig.2 Persulfate activation through electron- or energy-transfer (modified form Lee et al., 2020a).

Compound	Concentration (mmol/L)	PS Concentration (mmol/L)	Degradation efficiency	Final products	Activator	Run time (min)	Reference
TCE	1.0	5	90.68%	ND	nZVI	30	Dong et al., 2019
	0.4	5	>99%	short chain acids, CO₂	Fe²⁺	20	Yuan et al., 2014
	0.15	2.25	>99%	ND	Fe²⁺	30	Wu et al., 2015
	0.15	4.5	99.4%	ND	biochar supported nZVI	5	Yan et al., 2015
Hexabromocyclododecane	0.04	4	100%	Carboxylic acids, CO₂	UV/TiO₂	180	Li et al., 2019
Perfluorooctanesulfonate	0.15	4.5	>99%	PFOA	hydrothermal	5	Yang et al., 2013
Perfluorooctanesulfonate	0.01	4.2	>99%	ND	ultrasound	360	Lei et al., 2020
Perfluorooctanoic acid	0.01	4.2	100%	CO₂, HF	ultrasound	360	Lei et al., 2020
	0.12	12	61.7%	CO₂, F⁻	iron/activated carbon	600	Lee et al., 2020b
	0.15	15	85.6%	short chain acids	UV	480	Qian et al., 2016
6:2 FTS	0.01	4.2	87%	ND	ultrasound	360	Lei et al., 2020
6:2 FTS	0.0025	50	100%	short chain acids	heat	60	Bruton and Sedlak, 2017
PCB1	0.0019	16.8	100%	CO₂, H₂O	heat	480	Fang et al., 2013
PCB3	0.0019	16.8	100%	CO₂, H₂O	heat	480	Fang et al., 2013
PCB7	0.0019	16.8	100%	CO₂, H₂O	heat	480	Fang et al., 2013
PCB8	0.0019	16.8	100%	CO₂, H₂O	heat	480	Fang et al., 2013
PCB28	0.0019	5	88%	CO₂, H₂O	iron	240	Rodriguez et al., 2017
	0.0039	2	82%	CO₂, H₂O	vanadium species	240	Fang et al., 2017b
	0.0039	2	100%	ND	vanadium species	1440	Fang et al., 2017a
	0.0039	8	100%	ND	biochar	240	Fang et al., 2015
	0.0019	16.8	100%	CO₂, H₂O	heat	480	Fang et al., 2013
	0.0025	2	100%	ND	iron	240	Rodriguez et al., 2017
PCB30	0.0019	16.8	78%	CO₂, H₂O	heat	480	Fang et al., 2013
PCB31 (in soil)	0.006	500	67.2%	ND	iron	3 Days	Tang et al., 2015
PCB44 (in soil)	0.171	ND	97.4%	ND	electricity	7 Days	Yukselen-Aksoy
							and Reddy, 2012
PCB153 (in soil)	0.005	500	67.7%	ND	iron	3Days	Tang et al., 2015
BDE47	0.0031	71.4	75%	ND	nZVI	2 Days	Wang et al., 2017
BDE209	0.021	500	53.8%	short chain acids, CO₂, H₂O, Br⁻	heat	360	Peng et al., 2016
Monochlorobenzene	0.3	15	>90%	CO₂, H₂O	Fe²⁺	180	Jiang et al., 2020
DDTs	0.00138	10	87.9%	CO₂,H₂O	ZVI	30	Zhu et al., 2016b
Atrazine	0.05	1	100%	DEIA, HAIT, DEIHA	heat	120	Ji et al., 2015
Atrazine	0.025	1	63%	DIA, DEA	heat	35	Lutze et al., 2015
Pentachlorophenol	50	0.115	75%	CO₂, H₂O	electrochemical	60	Govindan et al., 2014
2,4-Dichlorophenol	0.184	12.5	98%	CO₂, H₂O	iron-based nanoparticles	180	Li et al., 2015
	0.034	0.5	82.7%	CO₂, H₂O	ZVC/nZVC	120	Zhou et al., 2018
	0.1	1	100%	ND	heat/Fe²⁺	45	Kuśmierek et al., 2016
Tetrabromobisphenol A	0.018	3.6	94.8%	CO₂, H₂O, Br⁻	Iron-based MOFs	120	Huang et al., 2020
Triclosan	0.17	9.4	80%	ND	heat	360	Chen et al., 2019
p-chloroaniline	0.5	2.5	98.03%	CO₂, H₂O	activated carbon	120	Yao et al., 2019
p-chloroaniline	0.2	4	>99%	CO₂, H₂O	FeS	150	Yuan et al., 2015

Tab.2 Persulfate activation and oxidation for degradation of organohalides

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