Denitrification using permeable reactive barriers with organic substrate or zero-valent iron fillers: controlling mechanisms, challenges, and future perspectives

Amoako-Nimako, George Kwame; Yang, Xiaojian; Chen, Fangmin

doi:10.1007/s11356-021-13260-7

Cited by 25 publications

(8 citation statements)

References 156 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Zhang et al mainly focused on the application of a single zeolite in PRBs and discussed the adsorption and ion exchange mechanism between zeolite and contaminants . Amoako-Nimako et al concentrated on the removal of nitrate by PRBs constructed with an organic substrate or ZVI, and the nitrate removal mechanism in single-medium PRBs was discussed . Andrade et al mainly discussed the single-action mechanism of four fillers (ZVI, activated carbon, zeolite, and microorganisms) and focused on organic compounds in soil .…”

Section: Advances In Bio-prb Technologymentioning

confidence: 99%

“…59 Amoako-Nimako et al concentrated on the removal of nitrate by PRBs constructed with an organic substrate or ZVI, and the nitrate removal mechanism in single-medium PRBs was discussed. 60 Andrade et al mainly discussed the single-action mechanism of four fillers (ZVI, activated carbon, zeolite, and microorganisms) and focused on organic compounds in soil. 61 Upadhyay et al introduced the mechanism of removal of permeable reactive biobarriers (PRBB) for nitrate, heavy metals, chlorinated solvents, and hydrocarbons (arsenic, vanadium, uranium, selenium, and emerging contaminants were not discussed), and the microbe−filler interaction was not discussed.…”

Section: Why Do Prbs Need Coupled Microorganismmentioning

confidence: 99%

See 1 more Smart Citation

Microbe–Mineral Interaction-Induced Microorganism-Augmented Permeable Reactive Barriers for Remediation of Contaminated Soil and Groundwater: A Review

et al. 2023

View full text Add to dashboard Cite

Conventional zerovalent iron permeable reactive barriers (PRBs) are limited by unknown iron corrosion kinetics and permeability loss, hindering access to desirable remediation targets. Against this background, microbe−mineral interactioninduced microorganism-augmented PRBs (Bio-PRBs) are considered a promising cutting-edge technology for increasing reaction rate k and enhancing removal efficiency η. This study provides original insights into the various active media and microbial carriers and the mechanisms of interaction among microorganisms, active media, and various contaminants. The results showed that microorganism-activated and microorganism-immobilized Bio-PRBs increased k and η by 40−2650% and 25−400%, respectively. In Bio-PRBs, the removal of contaminants involves the coupling of biodegradation, chemical reduction, and adsorption processes. Microorganisms promote the liquefaction of metal minerals into metal ions, thus forming a positive cycle by "microbe−mineral" interaction. Moreover, nonmetallic fillers affect k through synergistic effects of biodegradation, biological reduction, and electron donor groups. Microorganisms accelerate the e − transfer to promote the contaminants' transformation, and nonmetallic fillers are also conducive to improving diversity and abundance. Furthermore, some suggestions are made regarding the development and application of Bio-PRBs. Bio-PRBs provide efficient and novel approaches and strategies for eliminating soil and groundwater contamination based on microbe−mineral interaction and stimulation.

show abstract

Section: Advances In Bio-prb Technologymentioning

confidence: 99%

Section: Why Do Prbs Need Coupled Microorganismmentioning

confidence: 99%

Microbe–Mineral Interaction-Induced Microorganism-Augmented Permeable Reactive Barriers for Remediation of Contaminated Soil and Groundwater: A Review

et al. 2023

View full text Add to dashboard Cite

show abstract

“…14 Furthermore, a key limiting factor for the practical application of ZVI in groundwater is its chemical reduction of nitrate, which produces ammonium with higher toxicity. 20 In recent years, most studies have coupled an inorganic substance with an organic carbon source, yielding commendable long-term denitrification performance. This strategy not only reduces the microbial demand for inorganic substrates, facilitating a quicker enrichment of denitrifying microorganisms, but also alleviated secondary pollution issues caused by the organic carbon source.…”

Section: Introductionmentioning

confidence: 99%

Groundwater denitrification enhanced by a hydrogel immobilized iron/solid carbon source: impact on denitrification and substrate release performance

Yu,

Liu,

Yan

et al. 2024

Environ. Sci.: Processes Impacts

View full text Add to dashboard Cite

show abstract

“…Since the interflow is intermittent, technologies that can degrade or immobilize the contaminants in situ are more favorable for the removal of pollutants in interflow. Permeable reactive barriers (PRBs), which can intercept the contaminants by the reactive media fixed in the barriers, have been proven to be a promising technology for in situ remediation due to its sustainability and cost-effectiveness (Thiruverikatachari et al 2008;Obiri-Nyarko et al 2014;Amoako-Nimako et al 2021). Hence, selecting suitable reactive media for the fixation of nitrate from interflow in the barrier is the first and key step.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of nitrate from interflow by the Mg/Fe calcined layered double hydroxides

Chu

Zhang

et al. 2022

Water Science and Technology

View full text Add to dashboard Cite

Nitrate loss in interflow caused serious nitrate pollution of neighboring water bodies in the purple soil region of China's Sichuan Province. In this study, Mg/Fe(Al)-calcined layered double hydroxides (Mg/Fe(Al)-CLDHs) with varied Mg/Fe(Al) ratios were synthesized for nitrate removal from interflow, and 3:1 Mg/Fe CLDH exhibited the best adsorption performance. The effects of initial pH, adsorbent dosage and co-existing anions on the adsorption performance were investigated by batch experiments. The best-fitting kinetic and isothermal models for nitrate adsorption were the pseudo-second-order model and Freundlich model, respectively, indicating that the adsorption process was a physical-chemical multilayer process. The maximum adsorption capacity of nitrate was 73.36 mg/g, which was higher than that of many other commonly used absorbents. The adsorbents were characterized by XRD, FT-IR, TGA, SEM, TEM and BET techniques, and the XRD and FT-IR results revealed that the adsorption mechanism involved original layered structure reconstruction and ion-exchange interaction. Under the coexistence of SO42− and Cl−, 75.63% nitrate in interflow could be removed after 6 hours of adsorption. Overall, the synthesized Mg/Fe CLDH is an effective and low-cost nitrate absorbent for in-situ nitrate removal.

show abstract

Denitrification using permeable reactive barriers with organic substrate or zero-valent iron fillers: controlling mechanisms, challenges, and future perspectives

Cited by 25 publications

References 156 publications

Microbe–Mineral Interaction-Induced Microorganism-Augmented Permeable Reactive Barriers for Remediation of Contaminated Soil and Groundwater: A Review

Microbe–Mineral Interaction-Induced Microorganism-Augmented Permeable Reactive Barriers for Remediation of Contaminated Soil and Groundwater: A Review

Groundwater denitrification enhanced by a hydrogel immobilized iron/solid carbon source: impact on denitrification and substrate release performance

Adsorption of nitrate from interflow by the Mg/Fe calcined layered double hydroxides

Contact Info

Product

Resources

About