Biopurification Systems: Current Advances and Future Prospects of On-Farm Biodegradation of Pesticides

Rodríguez-Rodríguez, Carlos E.; Cambronero-Heinrichs, Juan Carlos; Castro-Gutiérrez, Víctor

doi:10.1007/698_2021_798

Cited by 4 publications

(6 citation statements)

References 104 publications

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“…Biopurification systems (BPSs), also known as biobeds, were designed for the first time in Sweden in the 1990s for the purpose of minimizing point source contamination, as a biotechnological approach for the treatment of pesticide-containing wastewater of agricultural origin . In general, a BPS is an ex situ solid-phase bioreactor where such wastewaters are disposed and treated, with the goal of achieving an accelerated removal of pesticides, mostly by biological means …”

Section: Point Source Contamination and Biopurification Systemsmentioning

confidence: 99%

“…2 In general, a BPS is an ex situ solid-phase bioreactor where such wastewaters are disposed and treated, with the goal of achieving an accelerated removal of pesticides, mostly by biological means. 4 The biologically active solid-phase matrix of BPS is known as a biomixture, which is either confined in a container (usually made of plastic) or directly excavated in the farm ground, in which case confinement is achieved through the use of concrete, a clay seal, or other materials. 2,5 In addition to the biomixture and the container, a grass layer is commonly placed on top of the system to control humidity; 6,7 nonetheless, this component is optional in the practice, as it could be destroyed in BPSs treating herbicides.…”

Section: Point Source Contamination and Biopurification Systemsmentioning

confidence: 99%

Section: Monitoring Of Biopurification Systems: Transformation Produc...mentioning

confidence: 99%

“…Describing the transformation products formed within biomixtures is a challenging, expensive, and time-consuming task, as they are in most cases unknown and produced at very low concentrations. 4 In this regard, the determination of pesticide transformation products in BPSs has scarcely been reported so far. Their production seems to match the products also formed in soil during pesticide degradation; 42,43 however, this production is commonly reported to be lower in biomixtures than in soil, as in the cases of chlorpyrifos, metribuzin, and terbuthylazine.…”

Section: Monitoring Of Biopurification Systems: Transformation Produc...mentioning

confidence: 99%

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On-Farm Removal of Pesticides: Current Insights on Biopurification Systems

Rodríguez-Rodríguez,

Rodríguez-Saravia

2023

ACS Agric. Sci. Technol.

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Point source contamination with pesticides is likely to occur at the farm level when pesticide-containing residues are not properly handled. To address this issue, biopurification systems (BPSs) were developed as a biotechnological approach for the on-farm treatment of pesticide-containing wastewater of agricultural origin. Despite the high removal capacity demonstrated toward diverse pesticides, BPSs have not been successful in eliminating some active ingredients, particularly from very persistent chemical groups. Moreover, the assessment of BPS efficiency has barely included an ecotoxicological evaluation, a key factor in terms of bioremediation. Proper optimization of BPS regarding the design of enhanced biomixtures (biological active matrix of BPSs) and the assessment of their behavior during real pesticide application cycles are required before massive field implementation; furthermore, specific biomixtures and operational recommendations should be applied for each crop/pesticide application cycle. This Review discusses several of these topics, including (i) pesticide removal scope; (ii) ecotoxicological monitoring of BPSs; (iii) biomixture optimization and enhancement by bioaugmentation approaches; (iv) the use of BPSs for the disposal of antibiotics and the effects of these compounds on pesticide removal; (v) unsolved operational guidelines like the BPS's life span and disposal of spent biomixtures.

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Section: Point Source Contamination and Biopurification Systemsmentioning

confidence: 99%

Section: Point Source Contamination and Biopurification Systemsmentioning

confidence: 99%

Section: Monitoring Of Biopurification Systems: Transformation Produc...mentioning

confidence: 99%

Section: Monitoring Of Biopurification Systems: Transformation Produc...mentioning

confidence: 99%

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On-Farm Removal of Pesticides: Current Insights on Biopurification Systems

Rodríguez-Rodríguez,

Rodríguez-Saravia

2023

ACS Agric. Sci. Technol.

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“…This organic biomixture has demonstrated high efficiency in pesticide removal under different conditions (e.g., high pesticide concentrations, repeated pesticide applications, and pesticide mixtures) [ 8 ]. The pesticide degradation in BPS is performed by microorganisms, mainly bacteria and fungi strains, that proliferate in the organic biomixture [ 9 , 10 ] and are recognized as pesticide degraders [ 11 , 12 , 13 , 14 ]. The microorganism capacity for pesticide degradation is determined by its adaptation to contaminated environments, microbial diversity, and enzyme production [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Biodegradation of Iprodione and Chlorpyrifos Using an Immobilized Bacterial Consortium in a Packed-Bed Bioreactor

2023

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This work provides the basis for implementing a continuous treatment system using a bacterial consortium for wastewater containing a pesticide mixture of iprodione (IPR) and chlorpyrifos (CHL). Two bacterial strains (Achromobacter spanius C1 and Pseudomonas rhodesiae C4) isolated from the biomixture of a biopurification system were able to efficiently remove pesticides IPR and CHL at different concentrations (10 to 100 mg L−1) from the liquid medium as individual strains and free consortium. The half-life time (T1/2) for IPR and CHL was determined for individual strains and a free bacterial consortium. However, when the free bacterial consortium was used, a lower T1/2 was obtained, especially for CHL. Based on these results, an immobilized bacterial consortium was formulated with each bacterial strain encapsulated individually in alginate beads. Then, different inoculum concentrations (5, 10, and 15% w/v) of the immobilized consortium were evaluated in batch experiments for IPR and CHL removal. The inoculum concentration of 15% w/v demonstrated the highest pesticide removal. Using this inoculum concentration, the packed-bed bioreactor with an immobilized bacterial consortium was operated in continuous mode at different flow rates (30, 60, and 90 mL h−1) at a pesticide concentration of 50 mg L−1 each. The performance in the bioreactor demonstrated that it is possible to efficiently remove a pesticide mixture of IPR and CHL in a continuous system. The metabolites 3,5-dichloroaniline (3,5-DCA) and 3,5,6-trichloro-2-pyridinol (TCP) were produced, and a slight accumulation of TCP was observed. The bioreactor was influenced by TCP accumulation but was able to recover performance quickly. Finally, after 60 days of operation, the removal efficiency was 96% for IPR and 82% for CHL. The findings of this study demonstrate that it is possible to remove IPR and CHL from pesticide-containing wastewater in a continuous system.

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Biochars as Adsorbents of Pesticides: Laboratory-Scale Performances and Real-World Contexts, Challenges, and Prospects

de Souza,

Dias Ferreira

2024

ACS EST Water

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Rising concerns about pesticide contamination in water bodies have driven the development of technologies to mitigate the water crisis. Recognized for its adsorption effectiveness and affordability, biochar is considered a sustainable adsorbent for water treatment. This review critically examines recent studies on biochar's application for pesticide removal. It addresses (i) the effectiveness of biochar and its relationship with pyrolysis conditions and modification strategies; (ii) mechanisms and properties controlling pesticide adsorption; (iii) real-world applications and large-scale implementation; and (iv) challenges and future research perspectives. Biochar's performance is highly dependent on precursor biomass, pyrolysis conditions, modification techniques, and pesticide properties. Among the 76 works evaluated, the number of pesticides studied is limited compared to the variety in use globally, with atrazine present in 22% of them. Issues regarding compliance with regulatory standards, potential environmental risks, and the need for greener modification techniques require further investigation. Biochar faces competition from other adsorbents, and the lack of production standards may hinder its adoption. Future research should optimize biochar under real environmental conditions and evaluate its economic and environmental impacts to support broader, sustainable applications. Collaborations among scientists, government officials, farmers, and the industrial sector are advisable to foster innovative initiatives in this field.

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Biopurification Systems: Current Advances and Future Prospects of On-Farm Biodegradation of Pesticides

Cited by 4 publications

References 104 publications

On-Farm Removal of Pesticides: Current Insights on Biopurification Systems

On-Farm Removal of Pesticides: Current Insights on Biopurification Systems

Biodegradation of Iprodione and Chlorpyrifos Using an Immobilized Bacterial Consortium in a Packed-Bed Bioreactor

Biochars as Adsorbents of Pesticides: Laboratory-Scale Performances and Real-World Contexts, Challenges, and Prospects

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