Red mud-activated peroxymonosulfate process for the removal of fluoroquinolones in hospital wastewater

Kim, Joohyun; Coulibaly, Gnougon Nina; Yoon, Sangho; Assadi, Aymen Amine; Hanna, Khalil; Bae, Sungjun

doi:10.1016/j.watres.2020.116171

Cited by 51 publications

(5 citation statements)

References 56 publications

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“…These issues limit their commercial use against the ECs. The advanced oxidation process (AOPs), which are based on the high oxidation potential of •OH radical, has emerged as a highly effective treatment process [5][6][7][8]. Moreover, like other advanced treatment technologies, AOPs do not have major limitations when used on a large scale [9].…”

Section: Introductionmentioning

confidence: 99%

Development of low power non-thermal plasma jet and optimization of operational parameters for treating dyes and emerging contaminants

Joshi¹,

Prakash²,

Ahammad³

et al. 2022

Plasma Sci. Technol.

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Non-thermal plasma has emerged as an effective treatment system against the latest class of highly recalcitrant and toxic environmental pollutants termed emerging contaminants (ECs). In the present work, a detailed experimental study is carried out to evaluate the efficacy of a non-thermal plasma jet with two dyes, Rd. B and Met. Blue, as model contaminants. The plasma jet provided a complete dye decoloration in 30 min with an applied voltage of 6.5 kVp−p •OH, having the highest oxidation potential, acts as the main reactive species, which with direct action on contaminants also acts indirectly by getting converted into H2O2 and O3. Further, the effect of critical operational parameters viz., sample pH, applied voltage (4.5−6.5 kVp−p), conductivity (5−20 mS cm−1), and sample distance on plasma treatment efficacy was also examined. Out of all the assessed parameters, the applied voltage and sample conductivity was found to be the most significant operating parameters. A high voltage and low conductivity favored the dye decoloration, while the pH effect was not that significant. To understand the influence of plasma discharge gas on treatment efficacy, all the experiments are conducted with argon and helium gases under the fixed geometrical configuration. Both the gases provided a similar dye decoloration efficiency. The DBD plasma system with complete dye removal also rendered maximum mineralization of 73% for Rd. B, and 60% for Met. Blue. Finally, the system's efficiency against the actual ECs (four pharmaceutical compounds, viz., metformin, atenolol, acetaminophen, and ranitidine) and microbial contaminant (E. coli) was also tested. The system showed effectivity in the complete removal of targeted pharmaceuticals and a log2.5 E. coli reduction. The present systematic characterization of dye degradation could be of interest to large communities working towards commercializing plasma treatment systems.

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Section: Introductionmentioning

confidence: 99%

Development of low power non-thermal plasma jet and optimization of operational parameters for treating dyes and emerging contaminants

Joshi¹,

Prakash²,

Ahammad³

et al. 2022

Plasma Sci. Technol.

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show abstract

“…In this study, the sample hospital waste was general and chemical waste, from washing and other activities that do not harm human health and the environment and from research or diagnostic work, cleaning, or disinfection procedures. There have been many treatments for hospital wastewater, including therapy for laundry wastewater [26], antibiotics [27], fluoroquinolones [28], and this research that focused on general waste.…”

Section: Abcs Testing On Hospital Wastewatermentioning

confidence: 99%

The Utilization of Corn Stalks as Biochar to Adsorb BOD and COD in Hospital Wastewater

Walanda¹,

Anshary²,

Napitupulu³

et al. 2022

IJDNE

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Biochar preparation from biomass and organic materials such as fruit peels, livestock manure, wood chips, and other agricultural residues has been studied. Those materials are prepared through a pyrolysis process, heating at a specific temperature, then utilized for adsorption waste pollution such as heavy metal ions. This study aimed to produce activated biochar from corn stalks (ABCS) as an adsorbent of BOD and COD in hospital wastewater. Activation of the biochar was carried out with an activator agent, namely ZnCl2. The moisture and ash content of activated biochar with a pyrolysis temperature of 400℃ and 500℃ meet SNI. SEM-EDS determined the pore and elements analysis. ABCS consist of 44.88 % and 60.56% of the carbon produced with different temperature of 400℃ and 500℃, respectively. One gram of ABCS reduced COD up to 71.4% in 4.5 hours and a maximum of 56.83% of BOD in 3 hours. While in an hour, a maximum of 2.5 g ABCS decreased COD 62.5% and 71.1% of BOD with the most of 1.5 g ABCS.

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“…As one of the most widely used antibiotics, tetracycline (TC) has the characteristics of strong hydrophilicity and a stable structure . To effectively remove such refractory organic pollutants from water, an advanced oxidation process based on peroxymonosulfate (PMS) (SR-AOP) was developed. − Compared with Fenton technology based on H 2 O 2 , SR-AOPs have a stronger redox capacity, a wider range of pH, and a longer half-life period. − Among all the methods for activating PMS, transition metal activation is considered to be the most promising, especially for cobalt-based catalysts. − So far, cobalt-based catalysts have been thoroughly studied, such as Co 3 O 4 , CoCu@ZnO, and CoMnO. − In addition to oxides, transition metal silicates have also indicated great potential in water treatment for adsorption and catalytic degradation because of their high reactivity for redox reactions, high surface areas, and abundant reserves. − Hao et al used Indocalamus as a silicon source to prepare CoSi, copper silicate, nickel silicate, iron silicate, and magnesium silicate for the activation of PMS. Among them, CoSi showed the best catalytic performance …”

Section: Introductionmentioning

confidence: 99%

Mn-Enhanced Cobalt Silicate-Activated Peroxymonosulfate for Tetracycline Degradation: Inheriting Merit and Offsetting Deficiency of Oxygen Vacancies

Long

Wang

et al. 2023

ACS EST Eng.

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Recently, the merits of Vo in catalytic areas were studied in detail, and the deficiency of Vo has also attracted much attention. However, when exploring the enhanced mechanism of bimetals for PMS activation, the effect of bimetals on the deficiency of Vo was usually ignored, especially in some Vo-rich bimetallic systems. Herein, the Co–Mn bimetallic silicate system was constructed to elucidate the effect and mechanism. MnCoSi has an edge over CoSi in the degradation performance of TC (0.02325 min–1 up to 0.07952 min–1). The result was assignable to the fact that the introduction of Mn brought more Vo and enhanced the positive effect of Vo. More importantly, the formation of heterogeneous active sites enhanced the adsorption of metal sites to PMS and compensated for the deficiency of Vo. This study enriched the enhancement mechanism of bimetallic systems and provided a theoretical basis for the optimization of catalysts rich in Vo.

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Red mud-activated peroxymonosulfate process for the removal of fluoroquinolones in hospital wastewater

Cited by 51 publications

References 56 publications

Development of low power non-thermal plasma jet and optimization of operational parameters for treating dyes and emerging contaminants

Development of low power non-thermal plasma jet and optimization of operational parameters for treating dyes and emerging contaminants

The Utilization of Corn Stalks as Biochar to Adsorb BOD and COD in Hospital Wastewater

Mn-Enhanced Cobalt Silicate-Activated Peroxymonosulfate for Tetracycline Degradation: Inheriting Merit and Offsetting Deficiency of Oxygen Vacancies

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