جذب سطحی آنتی بیوتیک های کینولون توسط سلولهای میکروبی در لجن
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جذب سطحی آنتی بیوتیک های کینولون توسط سلولهای میکروبی در لجن

عنوان فارسی مقاله: نقش ماده پلیمری خارج سلولی در جذب سطحی آنتی بیوتیک های کینولون توسط سلولهای میکروبی در لجن اضافی
عنوان انگلیسی مقاله: Role of extracellular polymeric substance in adsorption of quinolone antibiotics by microbial cells in excess sludge
مجله/کنفرانس: مجله مهندسی شیمی - Chemical Engineering Journal
رشته های تحصیلی مرتبط: شیمی، داروسازی
گرایش های تحصیلی مرتبط: شیمی کاربردی، شیمی دارویی، شیمی پلیمر
کلمات کلیدی فارسی: لجن اضافی، آنتی بیوتیک کینولون، جذب سطحی، ماده پلیمری خارج سلولی، Metal ion
کلمات کلیدی انگلیسی: Excess sludge، Quinolone antibiotic، Adsorption، Extracellular polymeric substance، Metal ion
نوع نگارش مقاله: مقاله پژوهشی (Research Article)
نمایه: Scopus - Master Journals List - JCR
شناسه دیجیتال (DOI): https://doi.org/10.1016/j.cej.2019.03.230
دانشگاه: Sino-Dutch R&D Centre for Future Wastewater Treatment Technologies/Key Laboratory of Urban Stormwater System and Water Environment, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
ناشر: الزویر - Elsevier
نوع ارائه مقاله: ژورنال
نوع مقاله: ISI
سال انتشار مقاله: 2019
ایمپکت فاکتور: 8/687 در سال 2018
شاخص H_index: 172 در سال 2019
شاخص SJR: 2/066 در سال 2018
شناسه ISSN: 1385-8947
شاخص Quartile (چارک): Q1 در سال 2018
فرمت مقاله انگلیسی: PDF
تعداد صفحات مقاله انگلیسی: 11
وضعیت ترجمه: ترجمه نشده است
قیمت مقاله انگلیسی: رایگان
آیا این مقاله بیس است: خیر
آیا این مقاله مدل مفهومی دارد: ندارد
آیا این مقاله پرسشنامه دارد: ندارد
آیا این مقاله متغیر دارد: ندارد
کد محصول: E13002
رفرنس: دارای رفرنس در داخل متن و انتهای مقاله
فهرست انگلیسی مطالب

Abstract


1- Introduction


2- Materials and methods


3- Results and discussion


4- Conclusions


References

نمونه متن انگلیسی مقاله

Abstract


Traditional wastewater treatment plants cannot completely remove trace pharmaceutical and personal care products. In particular, quinolone antibiotics are mainly adsorbed on microbial cell surfaces in excess sludge and are released into the water environment during agricultural supplementation, mainly due to the exfoliation of extracellular polymeric substances (EPS) caused by changes in environmental conditions. Here, the occurrence of seven typical quinolone antibiotics from three generations in excess sludge was investigated at trace concentrations using ultra-high performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). EPS facilitated adsorption independent of pH and quinolone antibiotic type, and the solid-liquid distribution coefficient decreased markedly as pH increased (pH 5–9, range of municipal wastewater). Metal ions bound in EPS were predominantly responsible for the adsorption of antibiotics in sludge, rather than the macroscopic size of the sludge floc. pH affected patterns of quinolone antibiotics, the zeta potential of sludge floc, and the contents of metal ions contained in sludge. The adsorption capacity of antibiotics first increased and then decreased with increasing pH in the range of pH 3–11, reaching a maximum (20,506, 14,458, 10,689, 22,854, 20,302, 8494, and 29,547 L/kg for CIP, ENR, LOM, MOX, NOR, OFL, and SAR, respectively) near pH 5, at which the cationic bridging of Ca2+ and Mg2+ bound in EPS played a major role owing to their larger ion radius and higher contents in excess sludge. Due to high surface heterogeneity of sludge, the Freundlich model was more suitable than the Langmuir model for describing the adsorption behavior of quinolone antibiotics. These results provide further insight into the release of quinolone antibiotics adsorbed in excess sludge, with potential implications for the agricultural use of sludge.


Introduction


Trace pharmaceutical and personal care products (PPCPs) have been detected in environmental media such as surface water, groundwater, and soil. Although the concentration of PPCPs related to human activities is usually on the order of nanograms to micrograms per liter in the water environment [1–5], many PPCPs are discharged continuously into the environment, causing potential risks for human health and the environment due to their ongoing utilization [6–9]. Wastewater treatment plants (WWTPs) are one of the main point sources of PPCP discharge into the environment [10], as it is difficult to biochemically degrade these substances during the conventional wastewater treatment process [11]. As a result, except for a small amount of PPCPs that are released into the atmosphere by escape, some portion of PPCPs remains in the effluent of the wastewater treatment plant, with the remainder present in excess sludge due to adsorption or dissolution [12]. The Water Pollution Prevention Action Plan promulgated in April 2015 in China stipulates that treated sludge cannot contain potential environmental pollutants [13]. When excess sludge containing PPCPs is used for land use and agricultural production activities such as fertilization, PPCPs in the sludge may be released into the environment as the external environment changes [10,14–19], thereby contaminating surface water and groundwater [4,12,18–20]. In recent years, quinolone antibiotics have been one of the most widely used antibiotics in veterinary and medical applications [21]. In China, they are widely used in human clinical settings and livestock breeding for disease prevention, with livestock and poultry farming accounting for about 50% of their use [22]. Moreover, the consumption of quinolone antibiotics has increased significantly; for example, the annual consumption of quinolone antibiotics in humans and animals in 1998 was 1,350 and 470 tons respectively [23], while the annual consumption of ciprofloxacin, norfloxacin, ofloxacin, lomefloxacin, and enrofloxacin in China in 2013 for both humans and animals reached 5340, 5440, 5110, 1250, and 5180 tons, respectively [22].

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