Relationship of the physicochemical properties of novel ZnO/biochar composites to their efficiencies in the degradation of sulfamethoxazole and methyl orange

Gonçalves, Mayara Gabriela; Veiga, Paulo Apolinário da Silva; Fornari, Mayara Regina; Peralta‐Zamora, Patricio; Mangrich, Antônio S.; Silvestri, Siara

doi:10.1016/j.scitotenv.2020.141381

Cited by 81 publications

(12 citation statements)

References 71 publications

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“…SMX removal is mainly by physical, chemical, and microbial methods 9 . The physical and chemical methods mainly include anion exchange, nano-filtration, struvite precipitation, and electrodialysis 10 .…”

Section: Introductionmentioning

confidence: 99%

Biodegradation and metabolic pathway of sulfamethoxazole by Sphingobacterium mizutaii

Song

Hao

Liu

et al. 2021

Sci Rep

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Sulfamethoxazole (SMX) is the most commonly used antibiotic in worldwide for inhibiting aquatic animal diseases. However, the residues of SMX are difficult to eliminate and may enter the food chain, leading to considerable threats on human health. The bacterial strain Sphingobacterium mizutaii LLE5 was isolated from activated sludge. This strain could utilize SMX as its sole carbon source and degrade it efficiently. Under optimal degradation conditions (30.8 °C, pH 7.2, and inoculum amount of 3.5 × 107 cfu/mL), S. mizutaii LLE5 could degrade 93.87% of 50 mg/L SMX within 7 days. Four intermediate products from the degradation of SMX were identified and a possible degradation pathway based on these findings was proposed. Furthermore, S. mizutaii LLE5 could also degrade other sulfonamides. This study is the first report on (1) degradation of SMX and other sulfonamides by S. mizutaii, (2) optimization of biodegradation conditions via response surface methodology, and (3) identification of sulfanilamide, 4-aminothiophenol, 5-amino-3-methylisoxazole, and aniline as metabolites in the degradation pathway of SMX in a microorganism. This strain might be useful for the bioremediation of SMX-contaminated environment.

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Section: Introductionmentioning

confidence: 99%

Biodegradation and metabolic pathway of sulfamethoxazole by Sphingobacterium mizutaii

Song

Hao

Liu

et al. 2021

Sci Rep

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“…2020). In the same way, BCP_temp (r = 0.51) has a moderate positive correlation in PC1, reinforcing that the increase of the pyrolysis temperature may favor the adsorption capacity of the BCPs by increasing their pore size properties(Gonçalves et al 2020). also reported an increase in speci c surface area and pore volume of BCPs by rising the temperature during synthesis, but expanding the time of synthesis promoted the aggregation of TiO 2 nanocrystals into small particles, thus, causing the reduction of speci c surface area.…”

mentioning

confidence: 55%

“…The average surface area (n = 491), total pore volume (n = 342) and mean pore diameter (n = 219) of the BCPs compiled on the studies were 185.97 ± 202.24 m 2 g − 1 , 0.19 ± 0.19 cm 3 g − 1 and 15.27 ± 21.62 nm, respectively (Table1). The properties of the BCPs can be in uenced by the biomass source(Gonçalves et al 2020) but also by the synthesis methodologies applied(Liu et al 2018;Huang et al 2019). High speci c surface area are normally related to more exposed reaction sites, contributing to more e ciently surface adsorption capacity and catalytic performance of BCPs(Le et al 2012).…”

mentioning

confidence: 99%

Design of biomass-based composite photocatalysts for wastewater treatment: a review over the past decade and future prospects

Pastre

Cunha

Marques

2022

Environ Sci Pollut Res

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Biomass-based composites (BCPs) have been investigated for more than one decade as photocatalysts for pollutants´ water treatment, however their technological application remains restricted. The systematic review performed aims to exhibit the latest advancement in photocatalytic degradation of pollutants in aqueous solution by BCPs synthesized with biomass and TiO 2 and/or ZnO, and to identify the necessary steps to achieve BCPs large scale application. Multivariate data analysis approach was performed to identify trend relationships between the BCPs synthesis method, the experimental conditions, and the BCPs characteristics correlated with the observed removal e ciency and the photodegradation kinetics. The results indicated the relevance of adsorption processes on the pollutants removal e ciency, re ected by the principal component analysis (PCA) performed on all categories of pollutants (PCA_pol). Furthermore, the PCA applied to textile dyes (PCA_dyes) and pharmaceutical compounds (PCA_pharma) also indicate the in uence of variables related to the composite synthesis (i.e. thermal treatment and time spent on BCPs synthesis) and photocatalytic experimental parameters (catalyst concentration, pollutant concentration and irradiation time) on the degradation kinetic accomplished by BCPs. The characterization of composites reveals that the speci c surface area and the narrow band gap are key characteristics for BCPs to serve as a competitive photocatalyst. The stability and recyclability of the BCPs are also discussed as necessary properties to overcome the experimental/lab scale phase and to move to full-scale applications. Further investigations are recommended to assess the performance of BCPs when treating real water, compared to commercial catalysts, as well as cost evaluation.

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“…4d (Cao et al 2021). Goncalves et al (2020) synthesized ZnO/biochar under different temperatures and applied them for the degradation of MO and sulfamethoxazole antibiotic (SMX), and compared the degradation capacity of the samples. The results showed that the photocatalytic activity is dependent on the pyrolysis temperature, which affected the band gap energy and visible light absorption efficiency.…”

Section: Ti-based Biocharmentioning

confidence: 99%

Application of biochar-based photocatalysts for adsorption-(photo)degradation/reduction of environmental contaminants: mechanism, challenges and perspective

Cai

Zhang

et al. 2022

Biochar

158

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The fast increase of population results in the quick development of industry and agriculture. Large amounts of contaminants such as metal ions and organic contaminants are released into the natural environment, posing a risk to human health and causing environment ecosystem problems. The efficient elimination of contaminants from aqueous solutions, photocatalytic degradation of organic pollutants or the in-situ solidification/immobilization of heavy metal ions in solid phases are the most suitable strategies to decontaminate the pollution. Biochar and biochar-based composites have attracted multidisciplinary interests especially in environmental pollution management because of their porous structures, large amounts of functional groups, high adsorption capacities and photocatalysis performance. In this review, the application of biochar and biochar-based composites as adsorbents and/or catalysts for the adsorption of different contaminants, adsorption-photodegradation of organic pollutants, and adsorption-(photo)reduction of metal ions are summarized, and the mechanism was discussed from advanced spectroscopy analysis and DFT calculation in detail. The doping of metal or metal oxides is the main strategy to narrow the band gap, to increase the generation and separation of photogenerated e−-h+ pairs, to produce more superoxide radicals (·O2−) and hydroxyl radicals (·OH), to enhance the visible light absorption and to increase photocatalysis performance, which dominate the photocatalytic degradation of organic pollutants and (photo)reduction of high valent metals to low valent metals. The biochar-based composites are environmentally friendly materials, which are promising candidates in environmental pollution cleanup. The challenge and perspective for biochar-based catalysts are provided in the end. Graphical Abstract

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Relationship of the physicochemical properties of novel ZnO/biochar composites to their efficiencies in the degradation of sulfamethoxazole and methyl orange

Cited by 81 publications

References 71 publications

Biodegradation and metabolic pathway of sulfamethoxazole by Sphingobacterium mizutaii

Biodegradation and metabolic pathway of sulfamethoxazole by Sphingobacterium mizutaii

Design of biomass-based composite photocatalysts for wastewater treatment: a review over the past decade and future prospects

Application of biochar-based photocatalysts for adsorption-(photo)degradation/reduction of environmental contaminants: mechanism, challenges and perspective

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