Environmental occurrence, toxicity and remediation of perchlorate – A review

Kumar, Krishnan Suresh; Subbiah, Kavitha; Parameswari, K.; Sakunthala, A.; Sathishkumar, Palanivel

doi:10.1016/j.chemosphere.2022.137017

Cited by 20 publications

(2 citation statements)

References 155 publications

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“…Nitrate and perchlorate were chosen as two representative oxidized contaminants in water systems . In particular, nitrate is a common oxyanion in industrial wastewater and drinking water, while perchlorate discharged from various industrial applications is also a worrisome pollutant in soil and aquatic environments. − Both are known to have negative effects on or be toxic to human beings and ecological health. , …”

Section: Introductionmentioning

confidence: 99%

Gas Fermentation Coupled with Water Remediation

Niu,

Zuo,

Zhao

et al. 2024

Environ. Sci. Technol. Lett.

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Gasification is a promising method for extracting carbon from nearly all types of biowastes, producing gaseous products containing H 2 , CO, and CO 2 . This study demonstrates a novel combination of gas fermentation and water remediation. On the basis of a membrane biofilm reactor fed with a gaseous mixture of H 2 and CO 2 , the effective removal of nitrate (>99%, 0.44 g of N m −2 day −1 ) and perchlorate (>95%, 18.3 mg of Cl m −2 day −1 ) was demonstrated in a long-term experiment, together with the observed generation of volatile fatty acids (VFAs). A suite of batch experiments were conducted in situ and ex situ to reveal the mechanisms of the observed removals, which showed the tight coupling of in situ gas fermentation and contaminant removal. Specifically, the heterotrophic reactions using VFAs formed in gas fermentation played the dominant role in contaminant removal (>90%), while the autotrophic reaction driven by H 2 in the gas mixture contributed marginally (<10%). The examination of the microbial community showed the dominance of fermenting bacteria, such as Acetobacterium_unclassif ied and Sporomusa, and denitrifying bacteria, such as Comamonas, Dechlorobacter, and Pseudomonas. Together, these results lead to the proposal of an alternative to gaseous products from biowaste gasification to achieve effective removal of various contaminants in water systems.

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Section: Introductionmentioning

confidence: 99%

Gas Fermentation Coupled with Water Remediation

Niu,

Zuo,

Zhao

et al. 2024

Environ. Sci. Technol. Lett.

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“…In this paper, we perform a solid-state analysis of the anion-binding characteristics of H 3 L 2+ , the diprotonated form of HL, toward the monocharged tetrahedral ClO 4 − and ReO4 -anions, observed in the crystal structures of H3L(ClO4)2•H2O and H3L(ReO4)2. These anions were chosen because, in addition to their technological, biomedical, and environmental interest [29][30][31][32][33][34][35][36][37], they are challenging targets for binding as they have low charge density and poor hydrogen bonding ability [38,39]. Nevertheless, binding and even recognition of these anions was achieved in some cases, yet the receptors used were often more structurally complex and laborious to prepare [38][39][40][41].…”

Section: Introductionmentioning

confidence: 99%

Anion Coordination into Ligand Clefts

Savastano,

Cappanni,

Bazzicalupi

et al. 2023

Crystals

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A tripodal anion receptor has been obtained by an easy and fast single-reaction synthesis from commercial reagents. The three ligand arms-bearing aromatic groups able to form anion–π interactions define ligand clefts where large anions, such as perchlorate and perrhenate, are included. We report here the synthesis of the ligand, its acid/base properties in an aqueous solution which has been used to direct the synthesis of anion complexes, and the crystal structure of the free ligand and its anion complexes H3L(ClO4)2·H2O and H3L(ReO4)2.

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