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Abed RMM, Al-Fori M, Al-Hinai M, Al-Sabahi J, Al-Battashi H, Prigent S, Headley T. Effect of partially hydrolyzed polyacrylamide (HPAM) on the bacterial communities of wetland rhizosphere soils and their efficiency in HPAM and alkane degradation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:9713-9724. [PMID: 36063269 DOI: 10.1007/s11356-022-22636-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Accepted: 08/17/2022] [Indexed: 06/15/2023]
Abstract
The effect of partially hydrolyzed polyacrylamide (HPAM) on structure and function of rhizosphere soil bacterial communities in constructed wetlands has been largely underinvestigated. In this study, we compare the effect of 250, 500, and 1000 mg/L of HPAM on bacterial community composition of Phragmites australis associated rhizosphere soils in an experimental wetland using MiSeq amplicon sequencing. Rhizosphere soils from the HPAM-free and the 500-mg/L-exposed treatments were used for laboratory experiments to further investigate the effect of HPAM on the soil's degradation and respiration activities. Soils treated with HPAM showed differences in bacterial communities with the dominance of Proteobacteria and the enrichment of potential hydrocarbon and HPAM-degrading bacteria. CO2 generation was higher in the HPAM-free soils than in the HPAM pre-exposed soil, with a noticeable increase in both soils when oil was added. The addition of HPAM at different concentrations had a more pronounced effect on CO2 evolution in the HPAM-pre-exposed soil. Soils were able to degrade between 37 ± 18.0 and 66 ± 6.7% of C10 to C30 alkanes after 28 days, except in the case of HPAM-pre-exposed soil treated with 500 mg/L where degradation reached 92 ± 4.3%. Both soils reduced HPAM concentration by 60 ± 15% of the initial amount in the 500 mg/L treatment, but by only ≤ 21 ± 7% in the 250-mg/L and 1000-mg/L treatments. In conclusion, the rhizosphere soils demonstrated the ability to adapt and retain their ability to degrade hydrocarbon in the presence of HPAM.
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Affiliation(s)
- Raeid M M Abed
- Biology Department, College of Science, Sultan Qaboos University, Al Khoud, P.O. Box: 36, PC 123, Al Seeb, Sultanate of Oman.
| | - Marwan Al-Fori
- Biology Department, College of Science, Sultan Qaboos University, Al Khoud, P.O. Box: 36, PC 123, Al Seeb, Sultanate of Oman
| | - Mahmood Al-Hinai
- Biology Department, College of Science, Sultan Qaboos University, Al Khoud, P.O. Box: 36, PC 123, Al Seeb, Sultanate of Oman
| | - Jamal Al-Sabahi
- Central Instrumentation Laboratory, College of Agricultural & Marine Sciences, Sultan Qaboos University, Al Khoud, P.O. Box: 34, PC 123, Al Seeb, Sultanate of Oman
| | - Huda Al-Battashi
- Biology Department, College of Science, Sultan Qaboos University, Al Khoud, P.O. Box: 36, PC 123, Al Seeb, Sultanate of Oman
| | - Stephane Prigent
- BAUER Nimr LLC, P.C 114, Al Mina, P.O. Box 1186, Muscat, Sultanate of Oman
| | - Tom Headley
- BAUER Nimr LLC, P.C 114, Al Mina, P.O. Box 1186, Muscat, Sultanate of Oman
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Dynamics of bacterial community exposed to hydrocarbons and oleophilic fertilizer in high-Arctic intertidal beach. Polar Biol 2011. [DOI: 10.1007/s00300-011-1003-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Delille D, Coulon F. Comparative mesocosm study of biostimulation efficiency in two different oil-amended sub-antarctic soils. MICROBIAL ECOLOGY 2008; 56:243-252. [PMID: 18074169 DOI: 10.1007/s00248-007-9341-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2007] [Accepted: 11/03/2007] [Indexed: 05/25/2023]
Abstract
Biological treatment has become increasingly popular as a remediation method for soils and groundwater contaminated with petroleum hydrocarbon, chlorinated solvents, and pesticides. Bioremediation has been considered for application in cold regions such as Arctic and sub-Arctic climates and Antarctica. Studies to date suggest that indigenous microbes suitable for bioremediation exist in soils in these regions. This paper reports on two case studies at the sub-Antarctic Kerguelen Island in which indigenous bacteria were found that were capable of mineralizing petroleum hydrocarbons in soil contaminated with crude oil and diesel fuel. All results demonstrate a serious influence of the soil properties on the biostimulation efficiency. Both temperature elevation and fertilizer addition have a more significant impact on the microbial assemblages in the mineral soil than in the organic one. Analysis of the hydrocarbons remaining at the end of the experiments confirmed the bacterial observations. Optimum temperature seems to be around 10 degrees C in organic soil, whereas it was higher in mineral soil. The benefit of adding nutrients was much stronger in mineral than in the organic soil. Overall, this study suggests that biostimulation treatments were driven by soil properties and that ex situ bioremediation for treatment of cold contaminated soils will allow greater control over soil temperature, a limiting factor in cold climates.
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Affiliation(s)
- Daniel Delille
- Laboratoire Arago, Observatoire Océanologique de Banyuls, Université P. et M. Curie UMR-CNRS 7621, 66650, Banyuls sur mer cedex, France.
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Røberg S, Stormo SK, Landfald B. Persistence and biodegradation of kerosene in high-arctic intertidal sediment. MARINE ENVIRONMENTAL RESEARCH 2007; 64:417-28. [PMID: 17493677 DOI: 10.1016/j.marenvres.2007.03.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2007] [Revised: 03/02/2007] [Indexed: 05/15/2023]
Abstract
A kerosene type hydrocarbon fraction (equivalent to 7 L m(-2)) was added to enclosures in the surface layer of high-arctic intertidal beach sediment. The experimental spill was repeated in two consecutive years in the period July-September. The rate and extent of hydrocarbon removal and the accompanying bacterial response were monitored for 79 days (2002) and 78 days (2003). The bulk of added kerosene, i.e. 94-98%, was lost from the upper 5 cm layer by putatively abiotic processes within 2 days and a residual fraction in the range 0.6-1.2mg per g dry sediment was stably retained. Concomitant addition of oleophilic fertilizer led to higher initial retention, as 24% of the kerosene remained after 2 days in the presence of a modified, cold-climate adapted version of the well-known Inipol EAP 22 bioremediation agent. In these enclosures, which showed an increase in hydrocarbon-degrader counts from 6.5 x 10(3) to 4.1 x 10(7) per g dry sediment within 8 days, a 17% contribution by biodegradation to subsequent hydrocarbon removal was estimated. Stimulation in hydrocarbon-degrader counts in fertilizer-alone control enclosures was indistinguishable from the stimulation observed with both kerosene and fertilizer present, suggesting that the dynamics in numbers of hydrocarbon-degrading bacteria was primarily impacted by the bioremediation agent.
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Affiliation(s)
- Stian Røberg
- The Norwegian College of Fishery Science, University of Tromsø, NO-9037 Tromsø, Norway
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Bruchon F, Basseres A, Bertrand JC. Mode of action of an oleophilic nutrient in enhancing 14C-hexadecane mineralization by a marine bacterial community. Biotechnol Lett 1996. [DOI: 10.1007/bf00137822] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Swannell RP, Croft BC, Grant AL, Lee K. Evaluation of bioremediation agents in beach microcosms. ACTA ACUST UNITED AC 1995. [DOI: 10.1016/s1353-2561(96)00012-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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