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Science of the Total Environment

Rodrigo Hoff, Ricardo Furtado, Juliane Marques Dos Santos, Eduardo Saldanha Vogelmann, Gabriel Duarte Hoff, Rafaella Cunha Kneip, Louíse Jank, Fábio Ferreira Gonçalves
Brazilian environmental legislation obliges the aeroagriculture operators to treat the effluents generated after aircraft washing. This effluent commonly contains high levels of pesticides (g L-1 ) with potential to produce point source pollution. In the present study, we evaluated the efficiency of two systems on the removal of the fungicides epoxiconazole and pyraclostrobin from these effluents. The first system is based on ozonation and is currently suggested by regulatory authority. The second system is based on a pyramid-shaped solar still...
November 5, 2018: Science of the Total Environment
An Liu, Nian Hong, Panfeng Zhu, Yuntao Guan
Petroleum hydrocarbons are a toxic pollutant group, primarily including volatile organic compounds (VOC), semi-volatile organic compounds (SVOC) and non-volatile organic compounds (NVOC). These pollutants can be accumulated on urban roads during dry periods and then washed-off by stormwater runoff in rainy days. Unlike heavy metals and polycyclic aromatic hydrocarbons, petroleum hydrocarbons have not received an equal attention in the field of stormwater pollutant processes. This paper investigated characteristics of VOC, SVOC and NVOC pollutant loads deposited on urban roads and their influential factors using a forward stepwise regression and PROMETHEE-GAIA analysis techniques...
November 3, 2018: Science of the Total Environment
Zhiming Zhang, Jianxiang Qiu, Ronghao Xiang, Haitian Yu, Xiangyang Xu, Liang Zhu
According to unique growth characteristics of various environmental microorganism specially with different substrates and their levels, aerobic sludge granulation are studied under different operation mode of influent organic loading rate (OLR), and the EPS component, sludge surface characters and functional microbes are analyzed to achieve a novel process for stable sludge granulation. Results showed that activated sludge cultivated under gradient influent OLR decreasing from 5.5 to 3.5 kgCOD m-3  d-1 achieved complete granulation with average size of 438 μm and exopolysaccharide (PS) to protein (PN) ratio over 2...
November 2, 2018: Science of the Total Environment
Jiabi Du, Kyeong Park, Timothy M Dellapenna, Jacinta M Clay
Hurricane Harvey, one of the worst hurricanes that hit the United States in recent history, poured record-breaking rainfall across the Houston metropolitan area. Based on a comprehensive set of data from various sources, we examined the dramatic responses in hydrodynamic and sedimentary processes of Galveston Bay to this extreme event. Using a freshwater fraction method that circumvents the uncertainties in surface runoff and groundwater discharge, the freshwater load into the bay during Harvey and the following month was estimated to be 11...
October 31, 2018: Science of the Total Environment
Gabriela Guimarães Nobre, Frank Davenport, Konstantinos Bischiniotis, Ted Veldkamp, Brenden Jongman, Christopher C Funk, Gregory Husak, Philip J Ward, Jeroen C J H Aerts
Despite advances in drought early warning systems, forecast information is rarely used for triggering and financing early actions, such as cash transfer. Scaling up cash transfer pay-outs, and overcoming the barriers to actions based on forecasts, requires an understanding of costs resulting from False Alarms, and the potential benefits associated with appropriate early interventions. On this study, we evaluate the potential cost-effectiveness of cash transfer responses, comparing the relative costs of ex-ante cash transfers during the maize growing season to ex-post cash transfers after harvesting in Kenya...
October 31, 2018: Science of the Total Environment
Carina L Lopes, Renato Mendes, Isabel Caçador, João M Dias
Salt marshes support estuarine biodiversity and provide ecosystem services; however, their general decay is being observed worldwide, in large part due to land reclamation. Accordingly, there is a growing concern about salt marsh preservation status having in mind the promotion of effective management decisions towards their conservation and restoration. Satellite imagery offers the opportunity to monitor land surface dynamics, constituting a fundamental information source for wetland monitoring. This study analyses spatial and temporal vegetation changes within Ria de Aveiro coastal lagoon between 1984 and 2017, by processing and analyzing TM and ETM+ Landsat imagery...
October 31, 2018: Science of the Total Environment
Wenwen Jiang, Xiangli Tian, Ziheng Fang, Li Li, Shuanglin Dong, Haidong Li, Kun Zhao
Salinity is an important environmental factor affecting fish physiology. Tongue sole (Cynoglossus semilaevis) is a euryhaline species that can survive in a wide range of salinity, and might be used as a promising model animal for environmental science. In this study, by using the nuclear magnetic resonance (1 H NMR)-based metabolomics, amino acids analysis and real-time quantitative PCR assay, we investigated the metabolic responses in the gills and plasma of tongue sole subjected to hypo- (0 ppt, S0) and hyper-osmotic stress (50 ppt, S50) from isosmotic environment (30 ppt, S30)...
October 31, 2018: Science of the Total Environment
Neelam M Nathani, Chandrashekar Mootapally, Bharti P Dave
Antibiotics have been widely spread in the environments, imposing profound stress on the resistome of the residing microbes. Marine microbiomes are well established large reservoirs of novel antibiotics and corresponding resistance genes. The Gulf of Khambhat is known for its extreme tides and complex sedimentation process. We performed high throughput sequencing and applied bioinformatics techniques on pelagic sediment microbiome across four coordinates of the Gulf of Khambhat to assess the marine resistome, its corresponding bacterial community and compared with the open Arabian Sea sample...
October 31, 2018: Science of the Total Environment
Zhiguo Cao, Mengmeng Wang, Qiaoying Chen, Chunyou Zhu, Janye Jie, Xiaoxiao Li, Xiayan Dong, Zheng Miao, Mohai Shen, Qingwei Bu
To investigate the particle size distribution, spatial variation, and corresponding health risks of polycyclic aromatic hydrocarbons (PAHs) in indoor environments, composite settled dust samples were collected from four types of microenvironments (offices, hotels, dormitories and kindergartens) in Beijing, and each pooled dust sample was homogenized and fractionated into 9 fractions (F1 (900-2000 μm), F2 (500-900 μm), F3 (400-500 μm), F4 (300-400 μm), F5 (200-300 μm), F6 (100-200 μm), F7 (74-100 μm), F8 (50-74 μm), and F9 (<50 μm))...
October 31, 2018: Science of the Total Environment
Feng Dong, Yuanju Dai, Shengnan Zhang, Xiaoyun Zhang, Ruyin Long
"Kyoto Protocol" states that carbon market is one of three private emission-reduction instruments. Since 2013 China implemented carbon emission trading scheme (ETS) in seven provinces or cities. The purpose of this paper is to investigate whether the implementation of ETS can result in the Porter effect. Based on the Porter hypothesis theory, this study employs the difference-in-difference (DID) method and the improved DEA model to analyze whether ETS can bring economic dividend and environmental dividend...
October 30, 2018: Science of the Total Environment
Haobin Huang, Qinxue Wang, Xiaowei He, Yanhu Wu, Cheng Xu
Exposure to some environmental chemicals is reportedly associated with the leucocyte telomere length (LTL), but the effects of the non-occupational exposure to polyfluoroalkyl chemical (PFCs) on the LTL are not well understood. Using data from 773 participants in the National Health and Nutrition Examination Survey (NHANES) conducted in 1999-2000, we analysed the association between blood PFC concentrations and LTL. Coefficients (betas) and 95% confidence intervals (CIs) for the blood PFC concentrations in association with the LTL were estimated using multivariate linear regression models after adjustment for age, gender, race, body mass index (BMI), poverty income ratio, educational level, white blood cell count, C-reactive protein and other PFCs...
October 30, 2018: Science of the Total Environment
Zhenyu Hong, Han Zhang, Yanru Zhang, Lingling Xu, Taotao Liu, Hang Xiao, Youwei Hong, Jinsheng Chen, Mengren Li, Junjun Deng, Xin Wu, Baoye Hu, Xiaoqiu Chen
Secondary organic aerosol (SOA) plays an important role in global climate change and air quality. PM2.5 (particles with aerodynamic diameters ≤2.5 μm) samples were collected at a mountainous forest site (Mt. Wuyi) in southeastern China between November 2015 and July 2016. Fourteen PM2.5 -bound SOA tracers, including isoprene, α/β‑pinene, β‑caryophyllene, and toluene, were measured using the gas-chromatography-mass-spectrometry method. The total concentrations of the isoprene, α/β‑pinene, β‑caryophyllene, and toluene SOA tracers were 45...
October 30, 2018: Science of the Total Environment
Xue-Tong Wang, Hao-Hao Jia, Bao-Ping Hu, Hang-Xin Cheng, Ying Zhou, Rui Fu
The characteristics of regional environmental pollution of short- and medium-chain chlorinated paraffins (SCCPs and MCCPs) in river system from Shanghai were comprehensively investigated in this study for the first time. The total concentrations of SCCPs and MCCPs ranged from 15.0 to 1640 ng L-1 (median: 278 ng L-1 ) and 40.3 to 3870 ng L-1 (median: 939 ng L-1 ) in water, and from not detected (ND) to 2020 ng g-1 (median: 89.3 ng g-1 ) and 10.1 to 10,800 ng g-1 (median: 947 ng g-1 ) in sediments, respectively...
October 30, 2018: Science of the Total Environment
Carla Mellado, Oscar R Chaparro, Cristian Duarte, Paola A Villanueva, Alejandro Ortiz, Nelson Valdivia, Rodrigo Torres, Jorge M Navarro
High latitudes are considered particularly vulnerable to ocean acidification, since they are naturally low in carbonate ions. The edible mussel Mytilus chilensis is a common calcifier inhabiting marine ecosystems of the southern Chile, where culturing of this species is concentrated and where algal blooms produced by the toxic dinoflagellate A. catenella are becoming more frequent. Juvenile Mytilus chilensis were exposed to experimental conditions simulating two environmental phenomena: pCO2 increase and the presence of paralytic shellfish toxins (PST) produced by the dinoflagellate Alexandrium catenella...
October 30, 2018: Science of the Total Environment
Zheng-Zhe Zhang, Ya-Fei Cheng, Bing-Qian Zhu, Ying-Yi Liu, Qian Zhang, Ren-Cun Jin
At least 11% of total nitrogen (TN) remains in the anammox effluent, making it difficult to meet increasingly stringent discharge standards. To overcome this bottleneck, an innovative process to achieve completely anaerobic ammonium removal over nitrite (CAARON) in one single up-flow anaerobic sludge blanket reactor was proposed in this study. The synchronous feeding of acetate at a C/N (nitrite) ratio of 0.6 significantly reduced the nitrogen removal capacity of anammox reactor by limiting the abundance and metabolism of anammox bacteria...
October 30, 2018: Science of the Total Environment
Wenhui Qiu, Jing Sun, Meijuan Fang, Shusheng Luo, Yiqun Tian, Peiyao Dong, Bentuo Xu, Chunmiao Zheng
The occurrence and distribution of antibiotics were investigated in surface water and sediment collected from the main rivers of Shenzhen, China. Total concentrations of 20 selected antibiotics ranged from 36.510 to 1075.687 ng L-1 (mean 244.992 ng L-1 ) in 31 water samples and from 28.124 to 2728.810 ng g-1 (mean 680.169 ng g-1 ) in 31 sediment samples. Notably, STZ and SDZ were the dominant antibiotics in both water and sediment as their higher concentrations compared with the other compounds...
October 30, 2018: Science of the Total Environment
Junjie Lin, Yujiao Tang, Dan Liu, Shuai Zhang, Bo Lan, Liping He, Zhiguo Yu, Shuang Zhou, Xi Chen, Yanhua Qu
The contents of different organic nitrogen (N) fractions, their contributions to total N (TN) and the relationship between their mineralizable N (MN) and different organic N fractions in sediments of the water level fluctuation (WLF) zone were investigated. The contents of TN, acid hydrolyzable N (AHN), and nonhydrolyzable N (NHN) decreased in sediments from the lower altitudes of the WLF zone. The AHN and NHN accounted for 70.56 to 82.89% and 17.11 to 29.44% of TN, respectively. The AHN was the main organic N fraction, indicating that these sediments might promote greater water eutrophication in the Three Gorges tributaries...
October 30, 2018: Science of the Total Environment
Annett Martin, Christine Müller-Graf, Thomas Selhorst, Antje Gerofke, Ellen Ulbig, Carl Gremse, Matthias Greiner, Monika Lahrssen-Wiederholt, Andreas Hensel
Game meat may contain elevated concentrations of lead especially if lead-containing ammunition is used for hunting. Then a health risk is possible for consumer groups with high game meat intake. The lead concentrations in three edible parts (marketable meat from the area close to the wound channel, saddle and haunch) of meat from red deer (Cervus elaphus) between animals hunted either with lead or non‑lead ammunition were compared. Furthermore, lead levels in game meat of lead-shot red deer were compared with those of lead-shot roe deer and lead-shot wild boar...
October 30, 2018: Science of the Total Environment
John N Hahladakis, Hareb Mohammed S J Aljabri
The Qatar's national vision (QNV2030) underlines an unequivocal commitment to maintaining harmony between the three inter-dependent pillars of sustainable development: economic growth, social development and environmental management. Nonetheless, it seems that the country is set on a trajectory of unparalleled and rapid development that most waste management and environmental experts would, possibly, characterise as unsustainable; in addition it seems to repeat many of the "errors" that have been made in other parts of the world, including, for example, a lack of developed recycling and waste management infrastructure...
October 30, 2018: Science of the Total Environment
Lianqing Xue, Boli Zhu, Yiping Wu, Guanghui Wei, Shumin Liao, Changbing Yang, Jing Wang, Hui Zhang, Lei Ren, Qiang Han
With large-scale developments, the Manas River Basin (MRB) is in an extreme imbalance especially in land use, thus causing a series of ecological problems. A reliable dynamic ecological risk assessment is expected to provide useful information for the economic development. Through coupling spatial Cellular Automaton-Markov (CA-Markov) model and Landsat satellite images in 2000, 2008 and 2016, we forecasted the land use maps in 2024 and 2032. Based on the ecological risk model, we evaluated the ecological risk at landscape level from 2000 to 2032...
October 30, 2018: Science of the Total Environment
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