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https://www.readbyqxmd.com/read/29329262/contamination-and-risk-assessment-of-estrogens-in-livestock-manure-a-case-study-in-jiangsu-province-china
#1
Pengcheng Xu, Xian Zhou, Defu Xu, Yanbing Xiang, Wanting Ling, Mindong Chen
This study investigated the occurrence and contamination risk of estrogens in livestock manure in Jiangsu Province, China. Four estrogens-estriol (E3), 17β-estradiol (17β-E2), bisphenol A (BPA), and 17α-ethinyloestradiol (EE2)-were detected in livestock manure from hens, ducks, swine, and cows. The respective mean concentrations of each estrogen found in these manures were 289.8, 334.1, 330.3, and 33.7 μg/kg for E3; 38.6, 10.9, 52.9, and 38.8 μg/kg for 17β-E2; 63.6, 48.7, 51.9, and 11.7 μg/kg for BPA; and 14...
January 12, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29315060/comparative-study-on-the-removal-efficiency-of-hydrogen-sulfide-h2s-using-three-different-packings
#2
Shihua Pu, Zuohua Liu, Feiyun Yang, Dingbiao Long, Wen Liu, Hao Wang, Kaipei Huang, Xiu Huang
To improve the removal efficiency on hydrogen sulfide (H2S), a biofilter was developed and was made of PVC pipes. The effects of three different packings (i.e., packing A, packing B, and packing C), containing different proportions of activated carbon, sawdust, wormcast, perlite, and pig manure compost, based on different biofilter parameters on H2S removal efficiency were investigated. With the extension of running time, the H2S removal rate of packing A reached up to 90.12%, that of packing B reached a peak at 92...
January 9, 2018: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/29306130/effect-of-composting-on-the-thermal-decomposition-behavior-and-kinetic-parameters-of-pig-manure-derived-solid-waste
#3
Vaibhav Dhyani, Mukesh Kumar Awasthi, Quan Wang, Jitendra Kumar, Xiuna Ren, Junchao Zhao, Hongyu Chen, Meijing Wang, Thallada Bhaskar, Zengqiang Zhang
In this work, the influence of composting on the thermal decomposition behavior and decomposition kinetics of pig manure-derived solid wastes was analyzed using thermogravimetry. Wheat straw, biochar, zeolite, and wood vinegar were added to pig manure during composting. The composting was done in the 130 L PVC reactors with 100 L effective volume for 50 days. The activation energy of pyrolysis of samples before and after composting was calculated using Friedman's method, while the pre-exponential factor was calculated using Kissinger's equation...
December 27, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29277043/variations-in-the-fate-and-risk-analysis-of-amoxicillin-and-its-degradation-products-during-pig-manure-aerobic-composting
#4
Ning Liu, Hejing Han, Hongjie Yin, Lujia Han, Guangqun Huang
In this study, 100 mg/kg of amoxicillin (AMX) was added to pig manure during aerobic composting using a laboratory-scale reactor system, for better understanding the degradation of AMX and its potential risks. Qualitative and quantitative analysis of AMX and its main degradation products (DPs) were then conducted using solid phase extraction combined with high performance liquid chromatography-tandem mass spectrometry. Additionally, hydrolysis testing was performed to monitor DPs produced from AMX degradation under various controlled conditions...
November 27, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29274059/alterations-in-anaerobic-ammonium-oxidation-of-paddy-soil-following-organic-carbon-treatment-estimated-using-13c-dna-stable-isotope-probing
#5
Qichun Zhang, Chao Gu, Huifang Zhou, Yongchao Liang, Yuhua Zhao, Hongjie Di
In this study, soil samples from the typical rice-wheat cropping system in Jiangsu Province, China, subjected to different fertilizer application treatments-no carbon (CK), urea (UR), straw (SR), pig manure (PM), starch (ST), and glucose (GL)-were used to determine potential anaerobic ammonium oxidation (anammox) rate and its association with bacterial abundance, diversity, and activity by using DNA stable isotope probing combined with 15N isotope tracing and molecular techniques. The effects of different organic carbon sources on anammox were significant, in the following order: GL > ST, SR > UR > PM; anammox activity differed significantly across treatments; however, the 13C active anammox bacteria were only closely related to Ca...
December 22, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29247944/sorption-mechanisms-of-neonicotinoids-on-biochars-and-the-impact-of-deashing-treatments-on-biochar-structure-and-neonicotinoids-sorption
#6
Peng Zhang, Hongwen Sun, Chao Ren, Lujuan Min, Huiming Zhang
To elucidate the sorption affinity of biochars for neonicotinoid pesticides and the influence of biochar structure on sorption mechanisms therein, 24 biochar samples were obtained by pyrolyzing maize straw and pig manure at pyrolyzing temperatures (PTs) of 200-700 °C and by further deashing them using acids, and the sorption of three typical neonicotinoids, imidacloprid, clothianidin and thiacloprid on untreated and acid-deashed biochars were evaluated. All the biochar samples could efficiently adsorb the three neonicotinoids and multiple mechanisms were involved in sorption...
December 13, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29238606/effects-of-amino-acid-composition-in-pig-diet-on-odorous-compounds-and-microbial-characteristics-of-swine-excreta
#7
Neeraja Recharla, Kihyun Kim, Juncheol Park, Jinyoung Jeong, Yongdae Jeong, Hyunjeong Lee, Okhwa Hwang, Jaehyoung Ryu, Youlchang Baek, Youngkyun Oh, Sungkwon Park
Background: Major amino acids in pig diets are Lys, Met, Thr, and Trp, but little is known about the requirements for the other essential amino acids, especially on odorous compounds and microbial characteristics in feces of growing-finishing pigs. To this end, different levels of amino acid composition added to diets to investigate the effects of amino acid composition on microbial characteristics and odorous compounds concentration. Methods: A total eight (n = 8) barrows (Landrace × Yorkshire × Duroc) with an average bodyweight of 89...
2017: Journal of Animal Science and Technology
https://www.readbyqxmd.com/read/29234706/adsorption-of-diclofenac-onto-different-biochar-microparticles-dataset-characterization-and-dosage-of-biochar
#8
Linson Lonappan, Tarek Rouissi, Satinder Kaur Brar, Mausam Verma, Rao Y Surampalli
Due to its wide occurrence in water resources and toxicity, pharmaceuticals and personal care products are becoming an emerging concern throughout the world. Application of residual/waste materials for water remediation can be a good strategy in waste management as well as in waste valorization. Herein, this dataset provides information on biochar application for the removal of emerging contaminant, diclofenac from water matrices. The data presented here is an extension of the research article explaining the mechanisms of adsorption diclofenac on biochars (Lonappan et al...
February 2018: Data in Brief
https://www.readbyqxmd.com/read/29223896/environmental-status-of-livestock-and-poultry-sectors-in-china-under-current-transformation-stage
#9
Yi Qian, Kaihui Song, Tao Hu, Tianyu Ying
Intensive animal husbandry had aroused great environmental concerns in many developed countries. However, some developing countries are still undergoing the environmental pollution from livestock and poultry sectors. Driven by the large demand, China has experienced a remarkable increase in dairy and meat production, especially in the transformation stage from conventional household breeding to large-scale industrial breeding. At the same time, a large amount of manure from the livestock and poultry sector is released into waterbodies and soil, causing eutrophication and soil degradation...
December 7, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29211053/impacts-of-small-scale-industrialized-swine-farming-on-local-soil-water-and-crop-qualities-in-a-hilly-red-soil-region-of-subtropical-china
#10
Di Zhang, Xingxiang Wang, Zhigao Zhou
Industrialized small-scale pig farming has been rapidly developed in developing regions such as China and Southeast Asia, but the environmental problems accompanying pig farming have not been fully recognized. This study investigated 168 small-scale pig farms and 29 example pig farms in Yujiang County of China to examine current and potential impacts of pig wastes on soil, water and crop qualities in the hilly red soil region, China. The results indicated that the small-scale pig farms produced considerable annual yields of wastes, with medians of 216, 333 and 773 ton yr-1 per pig farm for manure, urine and washing wastewater, respectively, which has had significant impact on surface water quality...
December 6, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29199365/volatile-fatty-acid-augmentation-and-microbial-community-responses-in-anaerobic-co-fermentation-process-of-waste-activated-sludge-mixed-with-corn-stalk-and-livestock-manure
#11
Xiaodong Xin, Junguo He, Wei Qiu
This study investigated the acidogenic and microbiological perspectives in the anaerobic co-fermentation of waste-activated sludge (WAS) mixed with corn stalk (CS) and pig manure (PM). The volatile fatty acids (VFAs) increased dramatically to over 5000 mg COD/L accumulation just within 4-5 days with the feedstock carbon to nitrogen (C/N) ratio regulation of 20/1. The CS and PM addition enhanced the compressibility of fermentation residuals by increasing the particle distribution spread index (DSI). Moreover, the external carbon addition conduced to bacterial consortia diversity rising and uneven population distribution in the co-fermentation, which contributed to VFAs accumulation potentially...
December 3, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29186720/archaeal-and-bacterial-community-structure-in-an-anaerobic-digestion-reactor-lagoon-type-used-for-biogas-production-at-a-pig-farm
#12
Liliana Pampillón-González, Nadia L Ortiz-Cornejo, Marco Luna-Guido, Luc Dendooven, Yendi E Navarro-Noya
Biogas production from animal waste is an economically viable way to reduce environmental pollution and produce valuable products, i.e., methane and a nutrient-rich organic waste product. An anaerobic digestion reactor for biogas production from pig waste was sampled at the entrance, middle (digestion chamber), and exit of a digester, while the bacterial and archaeal community structure was studied by 16S rRNA gene metagenomics. The number of bacterial operational taxonomic units (OTU)-97% was 3-7 times larger than that of archaeal ones...
November 30, 2017: Journal of Molecular Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29179075/manure-management-and-public-health-sanitary-and-socio-economic-aspects-among-urban-livestock-keepers-in-cambodia
#13
Gunilla Ström, Ann Albihn, Tomas Jinnerot, Sofia Boqvist, Agnes Andersson-Djurfeldt, Seng Sokerya, Kristina Osbjer, Sorn San, Holl Davun, Ulf Magnusson
Livestock manure is a valuable source of nutrients for crop production, but can also pose a public health hazard and have negative environmental impacts. This study investigated manure management practices among urban and peri-urban livestock keepers in Cambodia, to identify risk behaviours and socio-economic aspects associated with the handling of manure. A survey including 204 households was conducted, using a structured questionnaire with questions on demographics, socio-economic characteristics and household practices related to manure management...
November 24, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29179072/anaerobic-digestion-coupled-with-digestate-injection-reduced-odour-emissions-from-soil-during-manure-distribution
#14
V Orzi, C Riva, B Scaglia, G D'Imporzano, F Tambone, F Adani
This work aimed to measure the odour impact of untreated cow and pig slurries and treated (digestate and liquid fraction of digestate) manures when they were used on soil at a field scale, while also testing different spreading methods, i.e. surface vs. injection. Five experiments were performed in 2012-2016 on different farms. Odours were quantitatively (specific odour emission rate - SOER) (OUEm-2h-1) measured by using dynamic olfactometry and qualitatively, i.e. to obtain an "odour fingerprint", by using an electronic nose (EN)...
November 24, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29179054/effects-of-co-digestion-of-cucumber-residues-to-corn-stover-and-pig-manure-ratio-on-methane-production-in-solid-state-anaerobic-digestion
#15
Yaya Wang, Guoxue Li, Menghao Chi, Yanbo Sun, Jiaxing Zhang, Shixu Jiang, Zongjun Cui
This study investigated the performance of co-digesting cucumber residues, corn stover, and pig manure at different ratios. Microbial community structure was analyzed to elucidate functional microorganism contributing to methane production during co-digestion. Results show that mixing cucumber residues with pig manure and corn stover could significantly improved methane yields 1.27-3.46 times higher than mono-feedstock. The methane yields decreased with the cucumber residues increasing when the pig manure ratio was fixed at 4 and 3, and was opposite at ratio 5...
November 21, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29174898/effect-of-aeration-interval-on-oxygen-consumption-and-ghg-emission-during-pig-manure-composting
#16
Jianfei Zeng, Hongjie Yin, Xiuli Shen, Ning Liu, Jinyi Ge, Lujia Han, Guangqun Huang
To verify the optimal aeration interval for oxygen supply and consumption and investigate the effect of aeration interval on GHG emission, reactor-scale composting was conducted with different aeration intervals (0, 10, 30 and 50 min). Although O2 was sufficiently supplied during aeration period, it could be consumed to <10 vol% only when the aeration interval was 50 min, indicating that an aeration interval more than 50 min would be inadvisable. Compared to continuous aeration, reductions of the total CH4 and N2O emissions as well as the total GHG emission equivalent by 22...
November 6, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29172040/effect-of-long-term-fertilization-on-humic-redox-mediators-in-multiple-microbial-redox-reactions
#17
Peng Guo, Chunfang Zhang, Yi Wang, Xinwei Yu, Zhichao Zhang, Dongdong Zhang
This study investigated the effects of different long-term fertilizations on humic substances (HSs), humic acids (HAs) and humins, functioning as redox mediators for various microbial redox biotransformations, including 2,2',4,4',5,5'- hexachlorobiphenyl (PCB153) dechlorination, dissimilatory iron reduction, and nitrate reduction, and their electron-mediating natures. The redox activity of HSs for various microbial redox metabolisms was substantially enhanced by long-term application of organic fertilizer (pig manure)...
November 21, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29169089/effect-of-organic-loading-rate-on-anaerobic-co-digestion-of-rice-straw-and-pig-manure-with-or-without-biological-pretreatment
#18
Fei Shen, Hanguang Li, Xiaoyu Wu, Yuanxiu Wang, Qinghua Zhang
In this study, rice straw (RS) and pig manure (PM) mixtures with or without bio-pretreatment were used as the substrates and digested in a 9 L of anaerobic reactor at Organic loading rates (OLRs) of 0.4-3.1 kg COD/(m(3) d). The volumetric methane production rate (VMPR), methane yield and anaerobic stability were comparatively investigated. The results showed the co-anaerobic digestion processes of RS and PM mixture after biological pretreatment were very stable at OLRs of 0.4-2.5 kg COD/(m(3) d), and its optimal VMPR and methane yield could reach 0...
November 14, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29159450/lower-dietary-phosphorus-supply-in-pigs-match-both-animal-welfare-aspects-and-resource-efficiency
#19
Michael Oster, Christian Gerlinger, Kaja Heide, Franziska Just, Luisa Borgelt, Petra Wolf, Christian Polley, Brigitte Vollmar, Eduard Muráni, Siriluck Ponsuksili, Klaus Wimmers
Dietary phosphorus frequently exceeds age-specific requirements and pig manure often contains high phosphorus load which causes environmental burden at regional scales. Therefore, feeding strategies towards improved phosphorus efficiency and reduced environmental phosphorus load have to be developed. A 5-week feeding trial was conducted: piglets received medium, lower (-25%), or higher (+25%) amounts of phosphorus and calcium. Dietary responses were reflected by performance parameters, bone characteristics, and molecular data retrieved from serum, intestinal mucosa, and kidney cortex (p < 0...
November 20, 2017: Ambio
https://www.readbyqxmd.com/read/29154097/diversity-abundance-and-persistence-of-antibiotic-resistance-genes-in-various-types-of-animal-manure-following-industrial-composting
#20
Xun Qian, Jie Gu, Wei Sun, Xiao-Juan Wang, Jian-Qiang Su, Robert Stedfeld
Aerobic composting is used widely for animal manure recycling, and it may reduce the amount of antibiotic resistance genes (ARGs) that enter the environment. We sampled three types of animal (bovine, chicken, and pig) manure and the corresponding composts from 12 large-scale farms, and tested multiple ARGs and mobile genetic elements (MGEs) by high-throughput qPCR. A total of 109 ARGs were detected in the manure and compost samples, thereby demonstrating that both are important ARG reservoirs. The diversity and abundance of ARGs were significantly higher in chicken and pig manure than bovine manure, but industrial composting was more efficient at reducing the ARGs in chicken manure than pig and bovine manure...
November 13, 2017: Journal of Hazardous Materials
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