Ni(II), Cr(VI), Cu(II) and nitrate removal by the co-system of Pseudomonas hibiscicola strain L1 immobilized on peanut shell biochar

An, Qiang; Jin, Ningjie; Deng, Shuman; Zhao, Bin; Li, Meng; Ran, Binbin; Zhang, Laisheng

doi:10.1016/j.scitotenv.2021.152635

Cited by 34 publications

(15 citation statements)

References 57 publications

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“…Industrial activities are partly responsible for water contamination. First, it has been shown that wastewater from electroplating plants may contain nitrates used in the pickling process, or heavy metals used for coatings [ 16 ]. Heavy metals can also be discharged into water from other types of industry: petroleum processing, metallurgy, chemicals, or power stations [ 16 , 17 ].…”

Section: Source Of Water Pollutionmentioning

confidence: 99%

Bio-Based Adsorption as Ecofriendly Method for Wastewater Decontamination: A Review

Vievard

Alem

Pantet

et al. 2023

Toxics

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Intense human activities have for years contributed to the pollution of the environment by many dangerous pollutants such as heavy metals, pesticides, or polycyclic aromatic hydrocarbons. There are many conventional methods used to control pollution, with practical and/or financial drawbacks. Therefore, in recent years, an innovative, easy-to-implement and inexpensive adsorption method has been developed to recover waste and clean up water from micropollutants. Firstly, this article aims to summarize the issues related to water remediation and to understand the advantages and disadvantages of the methods classically used to purify water. In particular, this review aims to provide a recent update of the bio-based adsorbents and their use. Differently from the majority of the reviews related to wastewater treatment, in this article several classes of pollutants are considered. Then, a discussion about the adsorption process and interactions involved is provided. Finally, perspectives are suggested about the future work to be done in this field.

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Section: Source Of Water Pollutionmentioning

confidence: 99%

Bio-Based Adsorption as Ecofriendly Method for Wastewater Decontamination: A Review

Vievard

Alem

Pantet

et al. 2023

Toxics

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“…Nitrate (NO 3 – ) containing wastewater is typically derived from chemical, electroplating, photovoltaic, and semiconductor manufacturing industries that use large amounts of nitric acid or nitrate as raw materials or auxiliary agents. − The effluent containing nitrogenous organic matter and ammonia nitrogen was discharged from other industries such as leather, papermaking, fertilizer, etc. can also generate NO 3 – accumulation through microbial decomposition. , To prevent excessive NO 3 – emissions resulting in environmental and public health issues, strict regulation of its concentration discharged to the surface water has been implemented worldwide. , Although effective and technically mature physical (i.e., adsorption, , ion exchange, reverse osmosis, and electrodialysis) and biological methods − are available for NO 3 – removal, the concentrated liquor or residual sludge generated from these physicochemical methods requires reprocessing.…”

Section: Introductionmentioning

confidence: 99%

Efficient and Selective Electrochemical Nitrate Reduction to N₂ Using a Flow-Through Zero-Gap Electrochemical Reactor with a Reconstructed Cu(OH)₂ Cathode: Insights into the Importance of Inter-Electrode Distance

Zhou,

Zhu,

Wen

et al. 2024

Environ. Sci. Technol.

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Electrochemically converting nitrate, a widely distributed nitrogen contaminant, into harmless N 2 is a feasible and environmentally friendly route to close the anthropogenic nitrogen-based cycle. However, it is currently hindered by sluggish kinetics and low N 2 selectivity, as well as scarce attention to reactor configuration. Here, we report a flow-through zero-gap electrochemical reactor that shows a high performance of nitrate reduction with 100% conversion and 80.36% selectivity of desired N 2 in the chlorine-free system at 100 mg-N•L −1 NO 3 − while maintaining a rapid reduction kinetics of 0.07676 min −1 . More importantly, the mass transport and current utilization efficiency are significantly improved by shortening the inter-electrode distance, especially in the zero-gap electrocatalytic system where the current efficiency reached 50.15% at 5 mA•cm −2 . Detailed characterizations demonstrated that during the electroreduction process, partial Cu(OH) 2 on the cathode surface was reconstructed into stable Cu/Cu 2 O as the active phase for efficient nitrate reduction. In situ characterizations revealed that the highly selective *NO to *N conversion and the N−N coupling step played crucial roles during the selective reduction of NO 3 − to N 2 in the zero-gap electrochemical system. In addition, theoretical calculations demonstrated that improving the key intermediate *N coverage could effectively facilitate the N−N coupling step, thereby promoting N 2 selectivity. Moreover, the environmental and economic benefits and long-term stability shown by the treatment of real nitrate-containing wastewater make our proposed electrocatalytic system more attractive for practical applications.

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“…Generally, oxidative pollutants in wastewater do not exist alone; for example, hexavalent chromium (Cr(VI)) and NO 3 – -N are byproducts of many industries. − On the one hand, long-term stacking of byproducts might pollute soil and groundwater, resulting in 0.29–10.64 mg/L Cr(VI) and 75 mg/L NO 3 – -N detected in nearby groundwater supply wells . On the other hand, high concentrations of Cr(VI) and NO 3 – -N are usually present simultaneously in various industrial wastewater (metallurgical: 457.50 mg/L NO 3 – -N and 47.50 mg/L Cr(VI), electroplating: 10–1475 mg/L NO 3 – -N and 20–184 mg/L Cr(VI), − and tanning: 200 mg/L NO 3 – -N and 2000–5000 mg/L Cr(VI) , ). Cr(VI) inhibited the growth of NO 3 – -N reducing bacteria and might be associated with the spread and development of chromium resistance genes .…”

Section: Introductionmentioning

confidence: 99%

Nitrate Bioreduction under Cr(VI) Stress: Crossroads of Denitrification and Dissimilatory Nitrate Reduction to Ammonium

Wang,

Zhao,

Chen

et al. 2023

Environ. Sci. Technol.

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This study explored the response of NO3 –-N bioreduction to Cr(VI) stress, including reduction efficiency and the pathways involved (denitrification and dissimilatory nitrate reduction to ammonium (DNRA)). Different response patterns of NO3 –-N conversion were proposed under Cr(VI) suppress (0, 0.5, 5, 15, 30, 50, and 80 mg/L) by evaluating Cr(VI) dose dependence, toxicity accumulation, bioelectron behavior, and microbial community structure. Cr(VI) concentrations of >30 mg/L rapidly inhibited NO3 –-N removal and immediately induced DNRA. However, denitrification completely dominated the NO3 –-N reduction pathway at Cr(VI) concentrations of <15 mg/L. Therefore, 30 and 80 mg/L Cr(VI) (R4 and R6) were selected to explore the selection of the different NO3 –-N removal pathways. The pathway of NO3 –-N reduction at 30 mg/L Cr(VI) exhibited continuous adaptation, wherein the coexistence of denitrification (51.7%) and DNRA (13.6%) was achieved by regulating the distribution of denitrifiers (37.6%) and DNRA bacteria (32.8%). Comparatively, DNRA gradually replaced denitrification at 80 mg/L Cr(VI). The intracellular Cr(III) accumulation in R6 was 6.60-fold greater than in R4, causing more severe oxidant injury and cell death. The activated NO3 –-N reduction pathway depended on the value of nitrite reductase activity/nitrate reductase activity, with 0.84–1.08 associated with DNRA activation and 1.48–1.57 with DNRA predominance. Although Cr(VI) increased microbial community richness and improved community structure stability, the inhibition or death of nitrogen-reducing microorganisms caused by Cr(VI) decreased NO3 –-N reduction efficiency.

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Ni(II), Cr(VI), Cu(II) and nitrate removal by the co-system of Pseudomonas hibiscicola strain L1 immobilized on peanut shell biochar

Cited by 34 publications

References 57 publications

Bio-Based Adsorption as Ecofriendly Method for Wastewater Decontamination: A Review

Bio-Based Adsorption as Ecofriendly Method for Wastewater Decontamination: A Review

Efficient and Selective Electrochemical Nitrate Reduction to N₂ Using a Flow-Through Zero-Gap Electrochemical Reactor with a Reconstructed Cu(OH)₂ Cathode: Insights into the Importance of Inter-Electrode Distance

Nitrate Bioreduction under Cr(VI) Stress: Crossroads of Denitrification and Dissimilatory Nitrate Reduction to Ammonium

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Ni(II), Cr(VI), Cu(II) and nitrate removal by the co-system of Pseudomonas hibiscicola strain L1 immobilized on peanut shell biochar

Cited by 34 publications

References 57 publications

Bio-Based Adsorption as Ecofriendly Method for Wastewater Decontamination: A Review

Bio-Based Adsorption as Ecofriendly Method for Wastewater Decontamination: A Review

Efficient and Selective Electrochemical Nitrate Reduction to N2 Using a Flow-Through Zero-Gap Electrochemical Reactor with a Reconstructed Cu(OH)2 Cathode: Insights into the Importance of Inter-Electrode Distance

Nitrate Bioreduction under Cr(VI) Stress: Crossroads of Denitrification and Dissimilatory Nitrate Reduction to Ammonium

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Efficient and Selective Electrochemical Nitrate Reduction to N₂ Using a Flow-Through Zero-Gap Electrochemical Reactor with a Reconstructed Cu(OH)₂ Cathode: Insights into the Importance of Inter-Electrode Distance