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https://www.readbyqxmd.com/read/29778154/effects-of-chlortetracycline-cu-and-their-combination-on-the-performance-and-microbial-community-dynamics-in-swine-manure-anaerobic-digestion
#1
Rui Wang, Junya Zhang, Jibao Liu, Dawei Yu, Hui Zhong, Yawei Wang, Meixue Chen, Juan Tong, Yuansong Wei
Swine manure was typical for the combined pollution of heavy metals and antibiotics. The effects of widely used veterinary antibiotic chlortetracycline (CTC), Cu and their combination on swine manure anaerobic digestion performance and microbial community have never been investigated. Thus, four 2L anaerobic digestion reactors were established including reactor A (control), B (CTC spiked by 0.5g/kg dry weight, dw), C (Cu spiked by 5g/kg dw) and D (combination of CTC, 0.5g/kg dw, and Cu, 5g/kg dw), and dynamics of bacterial and archaeal community structure was investigated using high throughput sequencing method...
May 2018: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/29751447/source-estimation-of-pharmaceuticals-based-on-catchment-population-and-in-stream-attenuation-in-yodo-river-watershed-japan
#2
Seiya Hanamoto, Norihide Nakada, Naoyuki Yamashita, Hiroaki Tanaka
Fifty-five pharmaceuticals were monitored at four rivers and inlets and/or outlets of three sewage treatment plants (STPs) in Yodo River watershed, Japan over 17 sampling events. Twenty-six quantified pharmaceuticals were classified by source and fate. The load per person (LPP) of nine pharmaceuticals, including six with observed mass balance in studied river stretch of <80%, was appreciably lower in river water (RW) than in the effluent (EF) of STPs (RW/EF <0.5), indicating that they were susceptible to in-stream attenuation in the study area, while the others were relatively conservative...
February 15, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29727979/biochar-addition-for-accelerating-bioleaching-of-heavy-metals-from-swine-manure-and-reserving-the-nutrients
#3
Xiaocheng Wei, Dongfang Liu, Wenjiao Li, Lirui Liao, Zhendong Wang, Weiwei Huang, Wenli Huang
Biochar was applied during the bioleaching of heavy metals (HMs) from swine manure (SM), in an attempt to accelerate the HMs removal rates and to reduce the losses of nutrient elements (nitrogen and phosphorus). Results showed that the addition of biochar (5gL-1 ) could not only significantly shorten the leaching time of HMs (Cu, Zn, Mn and Cd) from 10 (control) to 7days with a high solubilization efficiency of 90%, but also decrease the total nitrogen loss efficiency by 42.7% from 180.3 (control) to 103.3mgL-1 in the leachate...
August 1, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29726235/-soil-moisture-variation-under-different-water-and-fertilization-managements-in-apple-orchard-of-weibei-dryland-china
#4
Zhi Yuan Zhao, Wei Zheng, Jie Liu, Peng Yi Ma, Zi Yan Li, Bing Nian Zhai, Zhao Hui Wang
To evaluate the variations of soil moisture under different water and fertilizer treatments in apple orchard in the Weibei dryland, a field experiment was carried out in 2013-2016 at Tianjiawa Village, Baishui County, Shaanxi Province. There were three treatments, i.e., farmers traditional model (only addition of NPK chemical fertilizer, FM), extension model (swine manure and NPK chemical fertilizer combined with black plastic film in tree row space, EM), and optimized model (swine manure and NPK chemical fertilizer combined with black plastic film in tree row space and planting rape in the inter-row of apple trees, OM)...
April 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29713637/relevant-measures-to-prevent-the-spread-of-african-swine-fever-in-the-european-union-domestic-pig-sector
#5
REVIEW
Cristina Jurado, Marta Martínez-Avilés, Ana De La Torre, Marina Štukelj, Helena Cardoso de Carvalho Ferreira, Monica Cerioli, José Manuel Sánchez-Vizcaíno, Silvia Bellini
During the past decade, African swine fever (ASF) has spread from the Caucasus region to eastern European Union countries affecting domestic pig and wild boar populations. In order to avert ASF spread, mitigation measures targeting both populations have been established. However, despite these efforts, ASF has been reported in thirteen different countries (Georgia, Azerbaijan, Armenia, the Russian Federation, Ukraine, Belarus, Estonia, Latvia, Lithuania, Poland, Moldova, Czech Republic, and Romania). In the absence of an effective vaccine or treatment to ASF, introduction and spread of ASF onto domestic pig farms can only be prevented by strict compliance to control measures...
2018: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/29708831/pre-digestion-to-enhance-volatile-fatty-acids-vfas-concentration-as-a-carbon-source-for-denitrification-in-treatment-of-liquid-swine-manure
#6
Sarah Xiao Wu, Lide Chen, Jun Zhu, McKenzie Walquist, David Christian
Insufficient denitrification in biological treatment is often a result of the lack of a carbon source. In this study, use of the volatile fatty acids (VFAs) generated via pre-digestion as a carbon source to improve denitrification in sequencing batch reactor (SBR) treatment of liquid swine manure was investigated. The pre-digestion of swine manure was realized by storing the manure in a sealed container in room temperature and samples were taken periodically from the container to determine the VFA levels. The results showed that after 14 days of pre-digestion, the VFA level in the digested liquid was increased by 200%...
April 30, 2018: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29698660/enterobacteria-associated-with-houseflies-musca-domestica-as-an-infection-risk-indicator-in-swine-production-farms
#7
V Cervelin, G Fongaro, J B Pastore, F Engel, M A Reimers, A Viancelli
Houseflies (Musca domestica) spend part of their life development on animal or human manure. Manure is high in pathogenic microbes; thus, houseflies have been known as a mechanical vector for various important zoonotic diseases. Therefore, the present study showcases captured houseflies from intensive swine production regions (which are areas of high manure concentration) in Southern Brazil, and analyzes their bodies' to the presence of Escherichia coli and Salmonella sp. and the sensitivity of these bacteria to various antibiotics...
April 23, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29687766/identification-and-prevalence-of-rnd-family-multidrug-efflux-pump-oqxab-genes-in-enterococci-isolates-from-swine-manure-in-china
#8
Li Yuan, Ya-Jun Zhai, Hua Wu, Hua-Run Sun, Zhi-Pei He, Ya-Bin Wang, Yu-Shan Pan, Nan-Nan Kuang, Gong-Zheng Hu
PURPOSE: The resistance/nodulation/cell division (RND) family multidrug efflux pump, OqxAB, has been identified as one of the leading mechanisms of plasmid-mediated quinolone resistance and has become increasingly prevalent among Enterobacteriaceae in recent years. However, oqxAB genes have not yet been reported in Enterococcus isolates. The aim of the present study was to identify the oqxAB genes and investigate their prevalence among Enterococcus from swine manure in China. METHODOLOGY: The oqxAB genes were screened in 87 Enterococcus isolates by PCR...
April 23, 2018: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/29669070/impact-of-narasin-on-manure-composition-microbial-ecology-and-gas-emissions-from-finishing-pigs-fed-either-a-corn-soybean-meal-or-a-corn-soybean-meal-dried-distillers-grains-with-solubles-diets
#9
Brian J Kerr, Steven L Trabue, Mark B van Weelden, Daniel S Andersen, Laura M Pepple
An experiment was conducted to determine the effect of feeding finishing pigs a corn-soybean (CSBM) diet or a CSBM diet supplemented with 30% dried distillers grains with solubles (DDGS), in combination with or without a growth-promoting ionophore (0 or 30 mg narasin/kg of diet), has on manure composition, microbial ecology, and gas emissions. Two separate groups of 24 gilts (initial BW = 145.1 kg, SD = 7.8 kg) were allotted to individual metabolism crates that allowed for total but separate collection of feces and urine during the 48-d collection period...
April 14, 2018: Journal of Animal Science
https://www.readbyqxmd.com/read/29665534/effect-of-minerals-on-the-stability-of-biochar
#10
Yan Yang, Ke Sun, Lanfang Han, Jie Jin, Haoran Sun, Yu Yang, Baoshan Xing
The stability of biochar is a major determinant of its potential for carbon sequestration. In previous studies, the biochar stability was evaluated by analyzing the oxidation resistance property of biochar, for which, K2 Cr2 O7 /H2 O2 oxidation and thermogravimetric analysis (TGA) were widely used to measure the high oxidation resistance of biochars. In this study, rice straw (RI)- and swine manure (SW)-derived biochars produced at different heating treatment temperatures (HTTs) and their corresponding de-ashed biochars and iron-biochars were selected to investigate the effect of minerals on these biochars stability...
April 12, 2018: Chemosphere
https://www.readbyqxmd.com/read/29660871/quantitative-models-for-predicting-adsorption-of-oxytetracycline-ciprofloxacin-and-sulfamerazine-to-swine-manures-with-contrasting-properties
#11
Dengmiao Cheng, Yao Feng, Yuanwang Liu, Jinpeng Li, Jianming Xue, Zhaojun Li
Understanding antibiotic adsorption in livestock manures is crucial to assess the fate and risk of antibiotics in the environment. In this study, three quantitative models developed with swine manure-water distribution coefficients (LgKd ) for oxytetracycline (OTC), ciprofloxacin (CIP) and sulfamerazine (SM1) in swine manures. Physicochemical parameters (n=12) of the swine manure were used as independent variables using partial least-squares (PLSs) analysis. The cumulative cross-validated regression coefficients (Q2 cum ) values, standard deviations (SDs) and external validation coefficient (Q2 ext ) ranged from 0...
April 12, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29604564/cultivation-of-microalgal-biomass-using-swine-manure-for-biohydrogen-production-impact-of-dilution-ratio-and-pretreatment
#12
Gopalakrishnan Kumar, Dinh Duc Nguyen, Periyasamy Sivagurunathan, Takuro Kobayashi, Kaiqin Xu, Soon Woong Chang
This study assessed the impact of swine manure (SM) dilution ratio on the microalgal biomass cultivation and further tested for biohydrogen production efficiency from the mixed microalgal biomass. At first, various solid/liquid (S/L) ratio of the SM ranged from 2.5 to 10 g/L was prepared as a nutrient medium for the algal biomass cultivation without addition of the external nutrient sources over a period of 18 d. The peak biomass concentration of 2.57 ± 0.03 g/L was obtained under the initial S/L loading rates of 5 g/L...
March 21, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29574374/changes-in-heavy-metal-bioavailability-and-speciation-from-a-pb-zn-mining-soil-amended-with-biochars-from-co-pyrolysis-of-rice-straw-and-swine-manure
#13
Jun Meng, Mengming Tao, Lili Wang, Xingmei Liu, Jianming Xu
Biochar has been utilized as a good amendment to immobilize heavy metals in contaminated soils. However, the effectiveness of biochar in metal immobilization depends on biochar properties and metal species. In this study, the biochars produced from co-pyrolysis of rice straw with swine manure at 400°C were investigated to evaluate their effects on bioavailability and chemical speciation of four heavy metals (Cd, Cu, Pb and Zn) in a Pb-Zn contaminated soil through incubation experiment. Results showed that co-pyrolysis process significantly change the yield, ash content, pH, and electrical conductivity (EC) of the blended biochars compared with the single straw/manure biochar...
March 22, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29574366/long-term-manure-application-increased-greenhouse-gas-emissions-but-had-no-effect-on-ammonia-volatilization-in-a-northern-china-upland-field
#14
Tao Zhang, Hongbin Liu, Jiafa Luo, Hongyuan Wang, Limei Zhai, Yucong Geng, Yitao Zhang, Jungai Li, Qiuliang Lei, Muhammad Amjad Bashir, Shuxia Wu, Stuart Lindsey
The impacts of manure application on soil ammonia (NH3 ) volatilization and greenhouse gas (GHG) emissions are of interest for both agronomic and environmental reasons. However, how the swine manure addition affects greenhouse gas and N emissions in North China Plain wheat fields is still unknown. A long-term fertilization experiment was carried out on a maize-wheat rotation system in Northern China (Zea mays L-Triticum aestivum L.) from 1990 to 2017. The experiment included four treatments: (1) No fertilizer (CK), (2) single application of chemical fertilizers (NPK), (3) NPK plus 22...
March 22, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29550723/nitrogen-recovery-from-wastewater-using-gas-permeable-membranes-impact-of-inorganic-carbon-content-and-natural-organic-matter
#15
S Daguerre-Martini, M B Vanotti, M Rodriguez-Pastor, A Rosal, R Moral
Gas-permeable membranes coupled with low-rate aeration is useful to recover ammonia (NH4 + ) from livestock effluents. In this study, the role of inorganic carbon (bicarbonate, HCO3 - ) to enhance the N recovery process was evaluated using synthetic effluents with various NH4 + to HCO3 - molar ratios of 0.5, 1.0, 1.5 and 2.0. The study also evaluated the effect of increased organic matter on the NH4 + recovery using humic acids (3000-6000 mg L-1 ), and the N recovery from high-strength swine manure. The release of hydroxide from the HCO3 - with aeration increased the wastewater pH and promoted gaseous ammonia formation and membrane uptake...
March 6, 2018: Water Research
https://www.readbyqxmd.com/read/29546499/heavy-metal-contamination-and-ecological-risk-assessment-of-swine-manure-irrigated-vegetable-soils-in-jiangxi-province-china
#16
Maolan Wang, Ronghao Liu, Xiuying Lu, Ziyi Zhu, Hailin Wang, Lei Jiang, Jingjing Liu, Zhihua Wu
Heavy metal are often added to animal fodder and accumulate in the soils with swine manure. In this study, heavy metal (Cu, Pb, Cd, Zn, As and Cr) concentrations were determined in agricultural soils irrigated with swine manure in Jiangxi Province, China. Results showed that the average concentrations of Cu, Zn, As and Cr (32.8, 93.7, 21.3 and 75.8 mg/kg, respectively) were higher than the background values, while Pb and Cd (15.2 and 0.090 mg/kg, respectively) were lower than the background values. Contamination factors [Formula: see text] indicated that they were generally moderate for Cu, Zn, As and Cr and generally low for Pb and Cd...
May 2018: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29536673/chrysomya-megacephala-larvae-feeding-favourably-influences-manure-microbiome-heavy-metal-stability-and-greenhouse-gas-emissions
#17
Xiaoyun Wang, Wanqiang Wang, Qiao Gao, Xiaoping Wang, Chaoliang Lei, Fen Zhu
Chrysomya megacephala is a saprophagous fly whose larvae can compost manure and yield biomass and bio-fertilizer simultaneously. However, there are concerns for the safety of the composting system, that is risk of diseases spread by way of manure pathogens, residue of harmful metals and emission of greenhouse gases. Microbiota analysis and heavy metal speciation by European Communities Bureau of Reference were evaluated in raw, C. megacephala-composted and natural stacked swine manure to survey pathogenic bacterial changes and mobility of lead and cadmium in manure after C...
May 2018: Microbial Biotechnology
https://www.readbyqxmd.com/read/29525587/impacts-of-zero-valent-iron-natural-zeolite-and-dnase-on-the-fate-of-antibiotic-resistance-genes-during-thermophilic-and-mesophilic-anaerobic-digestion-of-swine-manure
#18
Junya Zhang, Qianwen Sui, Hui Zhong, Xiaoshan Meng, Ziyue Wang, Yawei Wang, Yuansong Wei
This study investigated the fate of antibiotic resistance genes (ARGs) during mesophilic (mAD) and thermophilic digestion (tAD) of swine manure through zero valent iron (ZVI), natural zeolite and Dnase addition. Changes of microbial community, intI1, heavy metal resistance genes (MRGs) and virulence factors (VFs) were followed to clarify the influencing factors to ARGs reduction. Results showed that AD could realize ARGs reduction with tAD superior to mAD, and ZVI and natural zeolite could further enhance the reduction, especially for natural zeolite addition at mAD...
June 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29500255/long-term-exposure-of-agricultural-soil-to-veterinary-antibiotics-changes-the-population-structure-of-symbiotic-nitrogen-fixing-rhizobacteria-occupying-nodules-of-soybeans-glycine-max
#19
Cécile Revellin, Alain Hartmann, Sébastien Solanas, Edward Topp
Antibiotics are entrained in agricultural soil through the application of manures from medicated animals. In the present study, a series of small field plots was established in 1999 that receive annual spring applications of a mixture of tylosin, sulfamethazine, and chlortetracycline at concentrations ranging from 0.1 to 10 mg · kg-1 soil. These antibiotics are commonly used in commercial swine production. The field plots were cropped continuously for soybeans, and in 2012, after 14 annual antibiotic applications, the nodules from soybean roots were sampled and the occupying bradyrhizobia were characterized...
May 1, 2018: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29431994/transformations-of-phosphorus-speciation-during-hydro-thermal-treatments-of-animal-manures
#20
Rixiang Huang, Ci Fang, Bei Zhang, Yuanzhi Tang
Phosphorus (P) in animal manures is an important P pool for P recycling and reclamation. In recent years, thermochemical techniques have gained much interests for effective waste treatment and P recycling. This study comparatively characterized the transformation of P during two representative thermochemical treatments (pyrolysis and hydrothermal carbonization, HTC) of four animal manures (swine, chicken, beef, and dairy manures) by combining nuclear magnetic resonance spectroscopy, X-ray absorption spectroscopy, and sequential extraction...
March 6, 2018: Environmental Science & Technology
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