Simulation of equilibrium system and release behaviors of both oxytetracycline and copper on aerobic granules in a sequencing batch reactor

Song, Rui-Hong; Wang, Xinhua; Zhang, Guohui; Zhao, Lei; Sun, Xiaohua; Wang, Shuguang; Gao, Baoyu

doi:10.1016/j.bej.2011.06.009

Cited by 14 publications

(4 citation statements)

References 37 publications

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“…This phenomenon may be attributed to the different species of the complexation products of OTC and Cu at various pH conditions. According to the previous researches [8,10], it is inferred that at pH ≤3, the species were primarily CuH 2 L 2+ and CuHL + ; at 3≤pH≤4, the main species existed as CuHL + ; at 4＜pH≤8, CuHL + and CuL are the main species, and at 8＜pH, CuL dominates in the solution. Thus, because the increased speciation ratio of CuHL + originated from H 3 L + enhanced the adsorption of OTC onto loess soil from pH 3.0 to pH 4.0, it is indicated that the complexation of Cu 2+ and H 3 L + could favor OTC adsorption with Cu(II) playing as a bridge across the structure.…”

Section: Civil Structural and Environmental Engineeringmentioning

confidence: 93%

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Simultaneous Adsorption of Oxytetracycline and Copper(II) onto Loess Soil: Kinetics Properties and the Effects of pH

Liu

Chang

2013

AMR

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Oxytetracline (OTC) is a widely-used antibiotic, which could transport into aqueous and soil systems. The coexistence of heavy metals, such as copper (II) [Cu (II)], may change the adsorption behaviors of OTC onto soils. This study investigated the simultaneous adsorption behaviors of OTC Cu (II) onto loess soil, which is ubiquitous in the northwest of China. The kinetics experiments were conducted in single and binary systems for OTC and Cu, and the results showed that the kinetics data of both OTC and Cu could be well fitted by the pseudo-second-model model. The co-adsorption might increase the adsorption rate of both OTC and Cu. However, the effects of the complexation of OTC and Cu (II) on their adsorption amounts onto loess soil were quite different. The presence of Cu (II) could increase the uptake of OTC from pH 3.0 to 10.0. By contrast, the coexistence of OTC would decrease the uptake of Cu (II), especially at pH > 5.0. Hence, it is proposed that the migration of OTC might be slowed down by the coexistence of Cu (II), whereas the transportation of Cu (II) would be accelerated by the presence of OTC.

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Section: Civil Structural and Environmental Engineeringmentioning

confidence: 93%

“…Fig. 3 shows the distribution curves of OTC and Cu(II) calculated from visual MINTEQ + process [8]. It could be seen that the predominant species of OTC are OTC + and OTC at pH 3 and 4, OTC at pH 5, OTC and OTC − at pH 8, and OTC, OTC − and OTC 2− at pH 10.…”

Section: Civil Structural and Environmental Engineeringmentioning

confidence: 99%

Simultaneous Adsorption of Oxytetracycline and Copper(II) onto Loess Soil: Kinetics Properties and the Effects of pH

Liu

Chang

2013

AMR

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“…Their presence in the ecosystem has drawn high attention because of their potential to have negative ecological consequences. Antibiotics are hazardous contaminants because of their adverse effects on aquatic life and humans [33]. Mostly found in municipal wastewater [34], they are a kind of natural, semisynthetic or synthetic pharmaceutical products, that have been broadly employed in the elimination and therapy of human diseases, and also as growth promoters in animal husbandry and aquaculture.…”

Section: Pharmaceutically Active Compounds (Phacs)mentioning

confidence: 99%

“…OTC release from aerobic granules was 0.799-10.758 % when the coexisting Cu 2+ concentration was reduced from 40 to 0 mg L -1 and 0.08-6.21 % for Cu 2+ when the coexisting OTC concentration was reduced from 10 to 0 mg L -1 . This suggests that the reduction in coexisting ion concentration has a negative impact on their combined capacity with aerobic granules [33]. The exposure of Cu 2+ and Cu 2+ /PFOS to sludge reduced bacterial community richness and diversity.…”

Section: Mixed Metal Ions and Ppcpsmentioning

confidence: 99%

Toxic Effects of Xenobiotic Compounds on the Microbial Community of Activated Sludge

et al. 2022

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The presence of xenobiotic compounds in biological wastewater treatment processes with activated sludge may reduce microbial communities, disrupt microbial diversity, and diminish system performance. Shock loads and unusual operating events in these biological systems have negative impacts on their efficiency and reliability for pollutant degradation, thereby posing high risk to microorganisms and water quality of receiving treated water bodies. The severity and characteristics of the occurring damage are determined by the toxic contaminant's degree, nature and mode of application. This review highlights the effects of metabolic uncouplers, heavy metals, carbon nanotubes, pharmaceuticals and personal care products, nanoparticles, and phenolic compounds stress on microbial biomass in activated sludge systems. The synergistic, antagonistic, and shock load toxic effects of hybrid substances exposure in an activated sludge sequential batch reactor (SBR) system on organic and nutrient removal, system efficiency, and toxicants biodegradation are discussed. The findings can be used to provide a theoretical foundation and professional assistance for optimizing the shock impacts of these toxic substances on biological wastewater treatment systems, which will help to reduce their negative effects on treatment system efficiency.

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Optimization of Simultaneous Removal of Binary Toxic Antibiotic and Heavy Metal by Novel Biocomposite Beads: Modeling Study Using Brouers–Sotolongo Family Equations

Karoui

Arfi

Fernández‐Sanjurjo

et al. 2021

Recent Advances in Environmental Science From the Euro-Mediterranean and Surrounding Regions (2nd Edition)

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Simulation of equilibrium system and release behaviors of both oxytetracycline and copper on aerobic granules in a sequencing batch reactor

Cited by 14 publications

References 37 publications

Simultaneous Adsorption of Oxytetracycline and Copper(II) onto Loess Soil: Kinetics Properties and the Effects of pH

Simultaneous Adsorption of Oxytetracycline and Copper(II) onto Loess Soil: Kinetics Properties and the Effects of pH

Toxic Effects of Xenobiotic Compounds on the Microbial Community of Activated Sludge

Optimization of Simultaneous Removal of Binary Toxic Antibiotic and Heavy Metal by Novel Biocomposite Beads: Modeling Study Using Brouers–Sotolongo Family Equations

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