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https://www.readbyqxmd.com/read/29758894/environmental-and-economic-analysis-of-power-generation-in-a-thermophilic-biogas-plant
#1
D Ruiz, G San Miguel, B Corona, A Gaitero, A Domínguez
This paper investigates the environmental and economic performance of the power production from biogas using Life Cycle Assessment, Life Cycle Costing and Cost Benefit Analysis methodologies. The analysis is based on a commercial thermophilic biogas plant located in Spain where is installed a Combined Heat and Power system that produces electricity that is sold to the grid. Power generation has been assumed as the only function of the biogas system, expanding the system boundaries to include the additional function related to the end-of-life management of the biowastes...
August 15, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29753245/effects-of-long-term-pig-manure-application-on-antibiotics-abundance-of-antibiotic-resistance-genes-args-anammox-and-denitrification-rates-in-paddy-soils
#2
M Mizanur Rahman, Jun Shan, Pinpin Yang, Xiaoxia Shang, Yongqiu Xia, Xiaoyuan Yan
Previous studies of long-term manure applications in paddy soil mostly focused on the effects on denitrification, occurrence of antibiotics and antibiotic resistance genes (ARGs) without considering the effects on anaerobic ammonium oxidation (anammox). Here, we investigated the potential rates of anammox and denitrification, occurrence of antibiotics and AGRs in response to three fertilization regimes (C, no fertilizer; N, mineral fertilizer; and NM, N plus pig manure) in six long-term paddy experiment sites across China...
May 9, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29748804/heavy-metal-and-%C3%AE-13-c-value-variations-and-characterization-of-dissolved-organic-matter-dom-during-vermicomposting-of-pig-manure-amended-with-13-c-labeled-rice-straw
#3
Weiqin Zhu, Wu Yao, Xuyang Shen, Weiwen Zhang, Huiting Xu
In this work, a mixture of pig manure and 13 C-labeled rice straw was vermicomposted with Eisenia fetida for 40 days. The results showed that after they acclimated to the vermicomposting environment, the earthworms helped to degrade the substrate residues. After 40 days, the vermicomposting led to much higher pH, EC, C/N, available K, available P, available Zn, and CEC values but much lower available N and available Cu values in the substrate residues compared to the initial values. The earthworms accumulated 13 C, Cu, and Zn with a heavy metal enrichment capacity in the order of Cu > Zn...
May 10, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29745205/-effects-of-long-term-fertilization-on-organic-nitrogen-fractions-in-aquic-brown-soil
#4
Jin Feng Ren, Hua Zhou, Qiang Ma, Yong Gang Xu, Chun Ming Jiang, Fei Fei Pan, Wan Tai Yu
The purpose of present research was to investigate how different fertilization regimes altered soil organic nitrogen fractions and their inter-annual dynamics based on a series of long-term experiment (initiated at 1990), including: CK (non-fertilization); M (recycled pig manure); NPK (chemical fertilizer NPK); NPK + M (recycled pig manure with chemical fertilizer NPK). The results showed that soil organic nitrogen components under the different fertilization treatments presented contrastive patterns from the establishment the experiments to 2015...
May 18, 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29730565/aging-effect-of-minerals-on-biochar-properties-and-sorption-capacities-for-atrazine-and-phenanthrene
#5
Xinhao Ren, Fei Wang, Peng Zhang, Junkang Guo, Hongwen Sun
Biochars that were produced from pig manure at two different temperatures were incubated with three different minerals to examine the effects of soil minerals on biochar properties and sorption capacities. Biochars freshly mixed with minerals showed dramatic decreases in the sorption of atrazine (maximum decrease by 70.9% at Ce  = 0.5 Sw ) and phenanthrene (maximum decrease by 69.5% at Ce  = 0.5 Sw ) compared to unmixed biochars. Following the incubation, minerals were tightly attached to the biochar surface and insert into inner pores, thus changing the elemental composition and surface area of biochars in a manner dependent on the types of biochars and minerals involved...
April 21, 2018: Chemosphere
https://www.readbyqxmd.com/read/29713637/relevant-measures-to-prevent-the-spread-of-african-swine-fever-in-the-european-union-domestic-pig-sector
#6
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/29710621/increased-occurrence-of-heavy-metals-antibiotics-and-resistance-genes-in-surface-soil-after-long-term-application-of-manure
#7
Ting Guo, Chenlu Lou, Weiwei Zhai, Xianjin Tang, Muhammad Z Hashmi, Rabbia Murtaza, Yong Li, Xingmei Liu, Jianming Xu
The purpose of this study was to investigate the impact of long-term application of pig manure on the accumulation of heavy metals, antibiotics and ARGs in surface soil sampled from the Jiaxing long-term field experimental site with three manure treatments, N-PM (0 kg/ha/y, dw), L-PM (7720 kg/ha/y, dw), and H-PM (11,580 kg/ha/y, dw), in 2013 and 2014. The results showed that most serious metal pollution of Zn and Cu was recorded in all manured samples in both years, and their contents exceeded the soil quality standards...
April 20, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29709860/the-effect-of-nitrification-inhibitors-on-nh-3-and-n-2-o-emissions-in-highly-n-fertilized-irrigated-mediterranean-cropping-systems
#8
Jaime Recio, Antonio Vallejo, Julia Le-Noë, Josette Garnier, Sonia García-Marco, José Manuel Álvarez, Alberto Sanz-Cobena
There is an increasing concern about the negative impacts associated to the release of reactive nitrogen (N) from highly fertilized agro-ecosystems. Ammonia (NH3 ) and nitrous oxide (N2 O) are harmful N pollutants that may contribute both directly and indirectly to global warming. Surface applied manure, urea and ammonium (NH4 + ) based fertilizers are important anthropogenic sources of these emissions. Nitrification inhibitors (NIs) have been proposed as a useful technological approach to reduce N2 O emission although they can lead to large NH3 losses due to increasing NH4 + pool in soils...
April 27, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29705900/heavy-metal-availability-bioaccessibility-and-leachability-in-contaminated-soil-effects-of-pig-manure-and-earthworms
#9
Feng Li, Zhian Li, Peng Mao, Yingwen Li, Yongxing Li, Murray B McBride, Jingtao Wu, Ping Zhuang
A pot experiment and a leaching experiment were conducted to investigate the effects of earthworms and pig manure on heavy metals (Cd, Pb, and Zn) immobility, in vitro bioaccessibility and leachability under simulated acid rain (SAR). Results showed manure significantly increased soil organic carbon (SOC), dissolved organic carbon (DOC), available phosphorus (AP), total N, total P and pH, and decreased CaCl2 -extractable metals and total heavy metals in water and SAR leachate. The addition of earthworms significantly increased AP (from 0...
April 28, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29673995/investigating-the-adsorption-behavior-and-the-relative-distribution-of-cd-2-sorption-mechanisms-on-biochars-by-different-feedstock
#10
Rong-Zhong Wang, Dan-Lian Huang, Yun-Guo Liu, Chen Zhang, Cui Lai, Guang-Ming Zeng, Min Cheng, Xiao-Min Gong, Jia Wan, Hao Luo
The objective of this study was to investigate the adsorption behavior and the relative distribution of Cd2+ sorption mechanisms on biochars by different feedstock. Bamboo biochars (BBCs), corn straw biochars (CBCs) and pig manure biochars (PBCs) were prepared at 300-700 °C. Adsorption results showed PBCs have the best adsorption capacity for Cd2+ , the extra adsorption capacity of PBCs mainly attributed to the precipitation or cation exchange, which played an important role in the removal of Cd2+ by PBCs...
April 10, 2018: Bioresource Technology
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
#11
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/29660540/the-persistence-of-a-broad-range-of-antibiotics-during-calve-pig-and-broiler-manure-storage
#12
B J A Berendsen, J Lahr, C Nibbeling, L J M Jansen, I E A Bongers, E L Wipfler, M G M van de Schans
After administration to livestock, a large fraction of antibiotics are excreted unchanged via excreta and can be transferred to agricultural land. For effective risk assessment a critical factor is to determine which antibiotics can be expected in the different environmental compartments. After excretion, the first relevant compartment is manure storage. In the current study, the fate of a broad scope of antibiotics (n = 46) during manure storage of different livestock animals (calves, pigs, broilers) was investigated...
April 11, 2018: Chemosphere
https://www.readbyqxmd.com/read/29656257/nutrient-derived-environmental-impacts-in-chinese-agriculture-during-1978-2015
#13
Huijun Wu, Shun Wang, Liangmin Gao, Ling Zhang, Zengwei Yuan, Tingyu Fan, Kaiping Wei, Li Huang
Nitrogen (N) and phosphorus (P) play a critical role in agricultural production and cause many environmental disturbances. By combing life cycle assessment (LCA) method with the mass balance principle of substance flow analysis (SFA), this study establishes a nutrient-derived environmental impact assessment (NEIA) model to analyze the environmental impacts caused by nutrient-containing substances of agricultural production in China during 1978-2015. The agricultural production system is composed of crop farming and livestock breeding, and the environmental impacts include energy consumption, global warming, acidification, and eutrophication...
April 12, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29615636/millet-manuring-as-a-driving-force-for-the-late-neolithic-agricultural-expansion-of-north-china
#14
Xin Wang, Benjamin T Fuller, Pengcheng Zhang, Songmei Hu, Yaowu Hu, Xue Shang
Research in to the nature of Neolithic agriculture in China is often focused on topics such as the domestication and spread of cereal crops and the reconstruction of human and animal diets in the past. Field management practices, such as organic manuring, have not been systematically investigated in Chinese archaeology. Here we present an isotopic dataset for archaeological foxtail millet (Setaria italica) and common millet (Panicum miliaceum) grains as well as associated faunal remains (both domesticated and wild) from seven sites in the Baishui Valley of north China, in order to find direct evidence of organic manuring during the Late Neolithic period...
April 3, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29573724/tetracycline-resistance-genes-are-more-prevalent-in-wet-soils-than-in-dry-soils
#15
Yijun Kang, Qing Li, Lijuan Mei, Haitao Zhao, Yanchao Bai, Min Shen, Jian Hu
This study aimed to reveal the effects of water content on the spread of tetracycline resistance genes (TRGs) in the soil. Amendments of four samples with different soil water contents, namely 16% (dry soil) and 25% (wet soil), and with or without pig manures (PM) were conducted under laboratory conditions. Quantitative polymerase chain reaction (q-PCR) results showed that the relative abundance of TRGs (tetB, tetC, tetM, tetO, tetT, and tetZ) in the wet soils was significantly higher than that in the dry soils whether under fertilization or non-fertilization conditions...
March 21, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29558720/bacterial-community-succession-during-pig-manure-and-wheat-straw-aerobic-composting-covered-with-a-semi-permeable-membrane-under-slight-positive-pressure
#16
Shuangshuang Ma, Chen Fang, Xiaoxi Sun, Lujia Han, Xueqin He, Guangqun Huang
Bacteria play an important role in organic matter degradation and maturity during aerobic composting. This study analyzed composting with or without a membrane cover in laboratory-scale aerobic composting reactor systems. 16S rRNA gene analysis was used to study the bacterial community succession during composting. The richness of the bacterial community decreased and the diversity increased after covering with a semi-permeable membrane and applying a slight positive pressure. Principal components analysis based on operational taxonomic units could distinguish the main composting phases...
March 14, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29550543/effects-of-continuous-fertilization-on-bioavailability-and-fractionation-of-cadmium-in-soil-and-its-uptake-by-rice-oryza-sativa-l
#17
Qingqing Huang, Yao Yu, Yanan Wan, Qi Wang, Zhang Luo, Yuhui Qiao, Dechun Su, Huafen Li
A four-year field trial was conducted in a rice paddy in southern China to determine the effects of continuous phosphate fertilizer, pig manure, chicken manure, and sewage sludge application on soil Cd accumulation in soil and Cd uptake by rice. The results showed that continuous application of fertilizers with higher Cd levels caused Cd to accumulate and redistribute in various soil fractions. In turn, these effects influenced Cd bioavailability in rice plants. After four years of phosphate fertilizer, pig manure, chicken manure, and sewage sludge application, the annual soil Cd accumulation rates were 0...
March 15, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29544101/effect-of-biochar-and-humic-acid-on-the-copper-lead-and-cadmium-passivation-during-composting
#18
Haibin Zhou, Haibo Meng, Lixin Zhao, Yujun Shen, Yueqing Hou, Hongsheng Cheng, Liqiu Song
In this study, two different biochars (sawdust charcoal (SDC) and wheat straw charcoal (WSC)) and biological humic acid (BHA) were used with different addition rates in pig manure composting to illustrate the effect on heavy metals passivation. And the composts were applied to rape (Brassica campestris L.) growth to illustrate the stability of the passivation. Results showed the concentration of Cu, Cd, and Pb increased after composting, whereas the passivation rates of Cu, Pb, and Cd reached a maximum of 94...
February 23, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29525594/improvement-of-biochar-and-bacterial-powder-addition-on-gaseous-emission-and-bacterial-community-in-pig-manure-compost
#19
Hui Mao, Zhiyuan Lv, Hongda Sun, Ronghua Li, Bingnian Zhai, Zhaohui Wang, Mukesh Kumar Awasthi, Quan Wang, Lina Zhou
Effect of bamboo biochar (BC) combined with two bacterial powders (B) on gaseous emission and variety of bacterial community during pig manure (PM) composting was investigated. The results showed that treatments of BC, BC + B1 and BC + B2 can reduce peak gaseous emission by 54%, 80% and 69% for CH4 , respectively, while 37%, 45% and 45% for N2 O, respectively, and 13%, 19% and 26% for NH3 , respectively. The evolution of the bacterial community quantified with 16S rDNA analysis showed that in the thermophile stage, total relative abundance percentage of bacterial phyla of Firmicutes and Proteobacteria reached 97%, 97%, 93% and 96% for CK, BC, BC + B1 and BC + B2, respectively...
June 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29518661/environmental-and-public-health-related-risk-of-veterinary-zinc-in-pig-production-using-denmark-as-an-example
#20
REVIEW
John Jensen, Niels Christian Kyvsgaard, Antonio Battisti, Keith Edward Baptiste
At great economic cost, important steps have been taken over the last many decades to reduce and control emissions of heavy metals in order to protect the environment and public health. Monitoring has confirmed the success of these policies with progressive declines of heavy metals in for example air, sewage sludge and environmental samples. For zinc, such improvements may nevertheless be counter-acted by its widely usage as a feed additive and veterinary medicinal product to piglets in the post-weaning period resulting in reduced occurrence of diarrhea and improvement of daily weight gain...
May 2018: Environment International
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