Assessing the occurrence of pharmaceuticals and antibiotic resistance genes during the anaerobic treatment of slaughterhouse wastewater at different temperatures

Zahedi, S.; Gros, Meritxell; Balcázar, José Luís; Petrović, Mira; Pijuan, Maite

doi:10.1016/j.scitotenv.2021.147910

Cited by 23 publications

(7 citation statements)

References 65 publications

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“…For example, SL often contains high levels of FOG (50% dw) and protein (37% dw), depending on the source (Table S2). Additionally, antibiotic resistance genes (ARGs) are commonly found in AM, , SL, and wastewater due to the extensive use of antibiotics and antiparasitic drugs in animal husbandry. , Therefore, AD of these waste streams, particularly under thermophilic conditions, can mitigate the spread of pathogens and ARGs . However, mono-digestion of SL, particularly under thermophilic conditions, is often inhibited by ammonia and VFAs, posing a challenge to digester stability. , While AM:SL AcoD likely contributes to digestor stability, it did not improve SMY compared with the mono-digestion of AM (ROM = 1.11, p < 0.05, n = 3).…”

Section: Resultsmentioning

confidence: 98%

“…17 Additionally, antibiotic resistance genes (ARGs) are commonly found in AM, 135,136 SL, 137 and wastewater 138 due to the extensive use of antibiotics and antiparasitic drugs in animal husbandry. 139,140 Therefore, AD of these waste streams, particularly under thermophilic conditions, can mitigate the spread of pathogens 141 and ARGs. 142 However, mono-digestion of SL, particularly under thermophilic conditions, is often inhibited by ammonia and VFAs, posing a challenge to digester stability.…”

Section: Co-digestion Of Agricultural Wastes and Residuesmentioning

confidence: 99%

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Understanding Anaerobic Co-digestion of Organic Wastes through Meta-Analysis

Chuenchart,

Surendra,

Khanal

2024

ACS EST Eng.

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Anaerobic co-digestion (AcoD) is becoming increasingly popular in the biogas industry for its numerous advantages over mono-digestion, including balanced nutrient profiles, enhanced process stability, synergistic methane production, and reduced greenhouse gas emissions. However, varying results across AcoD studies highlight the need for an extensive meta-analysis of a large data set to better understand these synergies. Here, we compared methane yields from 432 data sets, based on the ratio of means, from AcoD and mono-digestion. The relative synergistic index (RSI) revealed synergistic effects in AcoD of lignocellulosic biomass with animal manures, particularly pig (RSI = 1.91) and chicken manures (RSI = 1.71). Due to its rapid biodegradability, food waste AcoD also demonstrated synergistic effects with both animal manures (RSI = 1.28) and lignocellulosic biomass (RSI = 1.41). After regrouping data by high-carbon cosubstrates, interpretable machine learning models identified temperature, which accelerates the hydrolysis of lignocellulosic biomass and emulsification of fats, oils, and grease, as the key factor influencing methane yield. Furthermore, experimental validation using food waste and sewage sludge co-digestion confirmed the superiority of multivariable linear regression in predicting specific methane yield over other models in terms of simplicity and efficiency.

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Section: Resultsmentioning

confidence: 98%

Section: Co-digestion Of Agricultural Wastes and Residuesmentioning

confidence: 99%

Understanding Anaerobic Co-digestion of Organic Wastes through Meta-Analysis

Chuenchart,

Surendra,

Khanal

2024

ACS EST Eng.

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“…However, the effect of temperature on removal of ARGs and its significance remain unknown. For example, some conflicting reports have identified a lower efficiency removing ARGs under thermophilic conditions than under mesophilic ones (Zahedi et al, 2021; Y. .…”

Section: Changes In the Relative Abundance Of Args During Digestion O...mentioning

confidence: 99%

Identification of factors affecting removal of antibiotic resistance genes in full-scale anaerobic digesters treating organic solid wastes

Damtie

Lee

Shin

et al. 2022

Bioresource Technology

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“…Antibiotics are necessary medicines; many of them are on the WHO list of essential medicines, and their consumption is continuously increasing [ 1 , 2 ]. Unfortunately, some of these substances are excreted from the body unmetabolized in percentages that vary depending on the compound (up to 80% for tetracycline [ 3 ]), and their accumulation in wastewater and soil causes complications [ 4 , 5 , 6 , 7 , 8 ]. The presence of antibiotics in wastewater and also in drinking water has been detected in small amounts, but this is quite alarming for environmental safety [ 2 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

“…The presence of antibiotics in wastewater and also in drinking water has been detected in small amounts, but this is quite alarming for environmental safety [ 2 , 9 ]. The use of antibiotics in excess also leads to the appearance of antibiotic-resistant microorganisms [ 5 , 6 , 10 , 11 ]. Antibiotic resistance is a current problem leading to a decrease in the effectiveness of these classes of drugs.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Removal of Antibiotics from Wastewater Using the CeO2/ZnO Heterojunction

et al. 2023

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CeO2/ZnO-based photocatalytic materials were synthesized by the sol-gel method in order to establish heterojunctions that increase the degradation efficiency of some types of antibiotics by preventing the recombination of electron–hole pairs. The synthesized materials were analysed by XRD, SEM, EDAX, FTIR, and UV-Vis. After several tests, the optimal concentration of the catalyst was determined to be 0.05 g‧L−1 and 0.025 g‧L−1 for chlortetracycline and 0.05 g‧L−1 for ceftriaxone. CeO2/ZnO assemblies showed much better degradation efficiency compared to ZnO or CeO2 tested individually. Sample S3 shows good photocatalytic properties for the elimination of ceftriaxone and tetracycline both from single solutions and from the binary solution. This work provides a different perspective to identify other powerful and inexpensive photocatalysts for wastewater treatment.

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Assessing the occurrence of pharmaceuticals and antibiotic resistance genes during the anaerobic treatment of slaughterhouse wastewater at different temperatures

Cited by 23 publications

References 65 publications

Understanding Anaerobic Co-digestion of Organic Wastes through Meta-Analysis

Understanding Anaerobic Co-digestion of Organic Wastes through Meta-Analysis

Identification of factors affecting removal of antibiotic resistance genes in full-scale anaerobic digesters treating organic solid wastes

Photocatalytic Removal of Antibiotics from Wastewater Using the CeO2/ZnO Heterojunction

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