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不同四环素浓度对好氧堆肥和蚯蚓堆肥过程影响的对比研究 被引量:3
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作者 李金津 史静怡 +3 位作者 文婷 陈云峰 张玉峰 伍玉鹏 《环境科学学报》 CAS CSCD 北大核心 2022年第4期259-267,共9页
好氧堆肥及蚯蚓堆肥是对畜禽粪便进行肥料化处置的有效方式,但畜禽粪便中残留的不同浓度四环素对二者堆肥过程的影响是否相同却并不清楚.因此,将不同浓度(5、25、125 mg·kg^(-1))的四环素添加到牛粪-秸秆物料中,对比了好氧堆肥与... 好氧堆肥及蚯蚓堆肥是对畜禽粪便进行肥料化处置的有效方式,但畜禽粪便中残留的不同浓度四环素对二者堆肥过程的影响是否相同却并不清楚.因此,将不同浓度(5、25、125 mg·kg^(-1))的四环素添加到牛粪-秸秆物料中,对比了好氧堆肥与蚯蚓堆肥堆制过程中堆体腐熟度指标的变化、堆肥产品养分含量的区别以及堆肥产品中四环素去除效率的差异,以期为不同浓度四环素的畜禽粪便肥料化提供适宜的处置方法 .研究结果显示,高浓度(125 mg·kg^(-1))四环素添加延缓了好氧堆肥的升温进程,但与低浓度(5、25 mg·kg^(-1))四环素添加处理相比并未显著影响堆体的腐熟度指标、堆肥产品总养分含量及速效养分含量.高浓度(125 mg·kg^(-1))四环素添加导致了蚯蚓堆肥中蚯蚓密度和生物量的显著下降,并导致蚯蚓堆肥无法正常启动.在蚯蚓堆肥中,低浓度(5、25 mg·kg^(-1))四环素添加处理之间在堆体的腐熟度指标,堆肥产品总养分含量及速效养分含量方面无显著差异.好氧堆肥对畜禽粪便中四环素的去除率可达90%以上,显著高于低浓度(5、25 mg·kg^(-1))四环素添加处理下的蚯蚓堆肥(达80%),但蚯蚓堆肥获得的堆肥产品在速效养分含量、pH值、GI值及C/N等指标方面要优于好氧堆肥.因此,对于低浓度四环素含量的畜禽粪便,可优先选择蚯蚓堆肥进行肥料化处置,以获得更优品质的堆肥产品,而对于高浓度四环素含量的畜禽粪便,只能选择好氧堆肥进行肥料化处置. 展开更多
关键词 好氧堆肥 蚯蚓堆肥 畜禽粪便 四环素浓度 腐熟度指标
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Use of tetracycline hydrochloride and alizarin complexone for immersion marking black rockfish Sebastes schlegelii 被引量:5
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作者 吕红健 张秀梅 +2 位作者 付梅 席丹 高天翔 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2014年第4期810-820,共11页
We tested the utility of chemical marking techniques in the juvenile black rockfish Sebastes schlegelii. Juveniles (30-40 mm total length) were immersed in a range of tetracycline hydrochloride (TC) solutions at c... We tested the utility of chemical marking techniques in the juvenile black rockfish Sebastes schlegelii. Juveniles (30-40 mm total length) were immersed in a range of tetracycline hydrochloride (TC) solutions at concentrations ranging from 300 to 500 mg/L, and alizarin complexone (ALC) solutions at concentrations ranging from 200 to 400 mg/L in filtered sea water (salinity of 30) for 24 h, respectively. Otoliths (sagittae, asteriscus), scales, fin rays (dorsal, pectoral, ventral, anal, and caudal fin rays), and fin spines (dorsal, ventral, and anal fin spines) were sampled and used to detect fluorescent marks after a 60-day growth experiment. With the exception of 300 mg/L TC, acceptable marks were produced in the otoliths and fin spines by all concentrations of TC and ALC. In particular, we observed clearly visible marks in the sagittae, asteriscus, and fin spines under normal light at concentrations of200~00 mg/L, 250-400 mg/L, and 250-400 mg/L ALC, respectively. Scales and fin rays had acceptable marks at much higher concentrations (_〉350 mg/L TC, 〉250 mg/L ALC for scales and _〉350 mg/L TC, 〉300 mg/L ALC for fin rays). The best mark quality (i.e., acceptable marks were observed in all sampled structures after immersion marking) were obtained following immersion in TC at between 350-500 rag/L, and ALC between 300-400 mg/L. In addition, there was no significant difference in survival and growth of TC and ALC marked fish compared to their controls up to 60 days post-marking (P〉0.05). 展开更多
关键词 Sebastes schlegelii tetracycline hydrochloride (TC) alizarin complexone (ALC) otoliths scales fin spines
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Effects of anaerobic composting on tetracycline degradation in swine manure 被引量:6
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作者 Yixuan Chu Chengran Fang +3 位作者 Hua Wang Xinkai Wu Yijie Gu Ji Shu 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2017年第10期1505-1511,共7页
Oxytetracycline(OTC) and tetracycline(TC) are the most common TC antibiotics used in human and veterinary medicine.Residual amounts of these antibiotics in manure pose a potential threat to public and ecological healt... Oxytetracycline(OTC) and tetracycline(TC) are the most common TC antibiotics used in human and veterinary medicine.Residual amounts of these antibiotics in manure pose a potential threat to public and ecological health as a result of the potential for them to be released to the environment following land application of manure from animals treated with antibiotics.We investigated the degradation of OTC and TC during anaerobic composting.We tested the effects of temperature and antibiotic concentration on degradation rates in a control and in manure spiked with TCs.We examined changes in p H,biological degradation material(BDM),and moisture corresponding with antibiotic degradation of TCs in the swine manure.Results showed that the OTC and TC concentrations decreased by between 68.54% and 95.50% in all nine treatments following 14 days of anaerobic composting,and the highest removal ef ficiencies were observed at an incubation temperature of 55°C and initial concentrations of 10.36 μg·g^(-1),and 5.96 μg·g^(-1) of OTC and TC,respectively,which were degraded by 95.50%,and 90.06%.During composting at 55 °C and at added concentrations of 5 μg·g^(-1),OTC decreased rapidly,and the time required for50% and 90% degradation was 4.1 and 9.8 days,respectively;for TC,these values were 4.4 and 14.0 days,respectively.Removal ef ficiencies for all TCs correlated well with moisture content of the manure.These results show that composting may be a practical and useful means to reduce concentrations of OTC and TC in swine manure prior to its land application. 展开更多
关键词 Antibiotics Tetracyclines Anaerobic composting Swine manure
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