bluuebunny/crossref_metadata_2025_split huggingface dataset:
A review about radioactivity in TENORMs of produced water waste from petroleum industry and its environmental and health effects
Authors: Ali Mohsen M.M. , Zhao Hongtao , Li Zhongyu , Ayoub Anour A.T. 
Published: April 2020

Abstract
Produced water that detached from petroleum production process is often reimbursed into the surrounding environment. This might have negative impact for environment; it is usually infiltrate agricultural soil and contaminate groundwater with toxic elements. These waters are often contaminated by technologically enhanced naturally occurring radioactive materials (TENORMs). It may create specific environmental issues and health radiological threats to the inhabitants, especially inside the petroleum facilities or the local population that live in areas and use the groundwater for the usual living purposes. The aim of this work is to provide an intensive review for the previous studies on the (TENORMs) that associating with the produced water from petroleum industry, and its environmental and health impacts in many areas around the globe. It is true that there is long term hazard associated with widespread behaviour of releasing produced water into the environments for both workers and local inhabitants as well as the environment itself. However, there is many studies suggesting that currently the situation could be considered in low hazard level in most of petroleum fields, but with increases in the extraction and use of petroleum, the discharge of produced water into the environment increases accordingly, this might be end up with negative impacts on the environment and health such as radiological contamination of aquatic and agricultural life.
The potential rate and microbial communities of dissimilatory nitrate reduction to ammonium in Pearl River Estuary
Authors: Jiang Ran , Yang Fang , Gou Wei , He Rui , Zhang Xinfeng 
Published: April 2020

Abstract
Since nitrogen-related eutrophication has become a severe problem in the Pearl River Delta area in China, it is crucial to have a deep understanding of the nitrogen cycle. This study investigated the existence of dissimilatory nitrate reduction to ammonium (DNRA) in sediments of the Pearl River Estuary using the 15N isotope paring method with continuous-flow systems. The results showed that the maximum

15

NH

4
+

was 389.7 nmol/g in 216 h, while the maximum DNRA rate of 4.68 nmol/(g wet sediment h) occurred in 120 hours. The principal components analysis (PCA) based on community composition at the genus level was performed by the nrfA sequences distributed in the nine sites covering a salinity range of 25.3 - 30.1%º, and forming four distinct clusters. There was no significant relationship between the potential DNRA rates in the spatial distribution and salinity, but the highest potential DNRA rate occurred near the sewage discharge in the western coastal area. High contents of nrfA gene fragments were found at the same site, with values of 1159715 copies/g wet sediment, while very low contents of nrfA were found at other sites. Based on the nrfA gene pyrosequencing, Enterobacteriaceae accounts for 89.9 - 99.0% of the classified sequences.
Water quality assessment in China Ningxia Section of the Yellow River using water quality identification index method
Authors: Hou Kai , Zhang Yuting , Qian Hui 
Published: April 2020

Abstract
The water quality of the Yellow River is related to the healthy development of industry and agriculture in Ningxia. According to the Ningxia Water Resources Bulletin 2012-2017, we selected three representative water quality indicators of ammonia nitrogen (NH3-N), total phosphorus (TP) and permanganate index (CODMn, and applied the single-factor and comprehensive water quality identification index method to evaluate the water quality of six national control sections in the Ningxia section of the Yellow River. The results showed that each section was most affected by NH3-N, followed by TP, and least affected by CODMn; The single-factor identification indexes of six sections were mostly falls into the category II, and the comprehensive identification indexes showed that the water quality mainly fell into the category II; Affected by the rapid development of the industry in this region, the water quality of the Mahuanggou section was seriously polluted.
Environmental monitoring system based on IOT android platform
Authors: Chen Jian , Wu Suwen , Xue Xiaoping , Zhang Shaqing 
Published: April 2020

Abstract
In order to realize remote monitoring of the environment, this paper uses the Android mobile platform to design an APP based on the Internet of Things environment monitoring system, which can display the environmental data (temperature, humidity and light intensity) of three different places. The system is a complete IoT application system consisting of ZigBee sensor network, gateway protocol converter, cloud server and mobile intelligent terminal. Users can use the mobile phone to display the current environment data by viewing the app.
Using UAV technology for basic data collection of Firmiana danxiaensis H. H. Hsue & H. S. Kiu, J. S. (Malvaceae), an important, nationally protected wild plant in Zhanglao Peak, Danxiashan Mountain, South China
Authors: Ouyang Jie , Simonson Scott L. , Zhang Yunpeng , Zhuang Changwei , Wang Jinchuan , Chen Zaixiong , Qiao Yan , Duan Yinan , Zheng Suifang 
Published: April 2020

Abstract
The protection of rare species is an urgent task for all of mankind, however this task is challenging because it is usually difficult to determine their numbers and spatial distribution. Firmiana danxiaensis H. H. Hsue & H. S. Kiu, J. S. (Malvaceae), which is listed at the highest grade of critically endangered (CR) plants in the first volume of “The China Species Red List,” can be found at Danxiashan Mountain, one of the six World Nature Heritage sites of China Danxia, in Northern Guangdong Province, China. At present, UAV low-altitude photogrammetry technology can complete and produce orthophoto maps of 1:2000 resolution and high-precision DEM data, and has a high application value in the collection and research of rare species’ basic data. For this study, UAV technology was used especially for mapping, quantifying and monitoring plant species. F. danxiaensis is a good fit for automated identification from UAV imagery due to its leaf coloration making it stand out during the end of October. A fixed-wing UAV was used to aerially survey the Zhanglao Peak Tourist Area of Danxiashan Mountain (the aerial survey area is 4.25 km2) and the valleys and cliffs where it is difficult to conduct field surveys. 638 high-precision image data were obtained. Photoscan software was used to produce mosaic image data, an orthophoto map, and DEM data. Analyses of the targets’ locations and data visualizations were done with Arc GIS 10.5 software. 1,515 individuals of F. danxiaensis have been found in the aerial survey area. The results suggest that the red line boundary of ecological protection should be delineated in the densely distributed areas of F. danxiaensis, and scientific research plans should be formulated to protect the rare species and their natural environment so as to ensure sustainable development and utilization for human beings.
Acute toxicity of 4 algal toxins on 5 common fishes of the pearl river estuary
Authors: Guo Wei , Jiang Ran , Li Jie , Ma Zhipeng , Zhang Xin-feng 
Published: April 2020

AbstractThis study studied the common economic fish in the Pearl River Estuary, including Konosirus punctatus, Hypophthalmichthys nobilis, Oreochromis spp, dace and Carassius auratus. We evaluated the toxic effects using hydrostatic toxicity. The method is to expose the test organism to different concentrations of algal toxin, and obtain the LC50 by using the probability unit method. The results showed that the same algal toxin had significant differences in toxicity to five species of fish. 96h-LC50 of Anabaena-a toxins on 5 common fishes. is 38.1μg/L, 45.6μg/L, 68.2μg/L, 78.2 μg/L, 64.5 μg/L; MC-LR is 66.9μg/L, 226.8μg/L, 255.4μg/L, 317.5 μg/L, 184.3 μg/L; MC-RR is 91.2μg/L, 266μg/L, 285μg/L, 337.6 μg/L, 214.8 μg/L; MC-YR is 95μg/L, 299μg/L, 505μg/L, 709μg/L, 439 μg/L. Anabaena-a toxins is the most toxic to the test organism, while MC-YR is the weakest. The toxicity of different algal toxins is different for the tested organisms. In this study, we found that the toxicity of the four algal toxins was from strong to weak: Anabaena-a toxins>MC-LR>MC-RR>MC-YR, this research results can provide reference and basic data support for the water environment quality and water supply safety in Dawan District and Pearl River Estuary.
Comparison of river network health status in two typical Chinese cities considering water diversion project
Authors: Fu Lei , Wang Junmin , You Aiju 
Published: April 2020

Abstract
In the last decades, water quality of river network in most Chinese cities has been worse than before due to the huge amount of wastewater discharges. Hence, in order to improve the river network environment, numbers of water diversion projects have been constructed in lots of these cities, which are widely acknowledged as effective projects to accelerate the river network flow rate and enhance the environmental capacity. In this study, two typical river networks are selected, which are Jiaxing river network and Wenzhou river network, located in northern and southern Zhejiang province, respectively. Since the water diversion projects in these two cities have been constructed and operated for years, it is necessary to evaluate the water quality improvements as well as the social benefits using a comprehensive evaluation system. Moreover, the health status comparison of these two different river networks is also made in this study to show the discrepancies between these two typical Chinese cities. The analysis and results in this study will be widely used in other Chinese cities in the future as a decision-making method for the construction of water diversion projects.
Study on new decolorization technology of waste lubricating oil
Authors: Gong Jing 
Published: April 2020

Abstract
The decolorization and regeneration of waste lubricating oil is an important measure to prevent pollution and protect the environment. In view of the serious pollution of the traditional decolorization process of waste lubricating oil, according to the reasons for the color of waste lubricating oil, the decolorization effect of waste lubricating oil under different experimental conditions was investigated by the combination of chemical method and adsorption method, taking the total decolorization rate and total oil yield rate as evaluation indexes. The experimental results showed that: in 150 g waste lubricating oil, the mass fraction of 22% ammonium chloride solution was added, the upper layer was taken after centrifugation, and the decolorization rate was up to 11.74%. 30 ml of 15% sodium hydroxide solution was added into the obtained upper layer solution, and the upper layer was centrifuged and the total decolorization rate was 19.19%. Then attapulgite clay was used to adsorb and depressurize the obtained upper solution, through single factor experiment, the better conditions of adsorption decompression filtration were obtained as follows: attapulgite clay content was 15% of the mass fraction of waste lubricating oil, decolorization temperature was 50°C, pressure of 65.6-66.7 kPa was reduced for 5 minutes. After the above decolorization steps, the total decolorization rate and total oil yield of waste lubricating oil are 84.31% and 79.32%, respectively.
Groundwater quality for drinking and irrigation purpose in a loess aquifer Northwestern China: a case study in Liquan loess tableland
Authors: Jia Hui , Qian Hui 
Published: April 2020

Abstract
Knowledge of groundwater quality is a crucial issue for the scientific and sustainable exploitation of the groundwater resources in loess aquifer, northwest of China. In this study, analysis of water quality for drinking and irrigation were proceeded in a loess aquifer. Based on the analysis of 52 groundwater samples, the groundwater is characterized by high sodium, with 54% samples have sodium exceed WHO limit, observed in the central of loess tableland where the water table is shallow. EC, SAR, and SSR indices are used to appraise the water quality for irrigation. The results showed groundwater can pose high risks of salinity and medium sodium hazard, without any measures and management.
Extraction/removal of uranium, U(VI) from chloride solutions by an environment-friendly extractant
Authors: Ibrahim Sherif M. , Zhang Yan , Xue Yun , Yang Suliang , Ma Fuqiu , Tian Guoxin 
Published: April 2020

Abstract
The extraction/removal of uranium U(VI) from chloride solutions have been investigated in the pH region by using N, N-di(2-ethylhexyl)-diglycolamic acid (HDEHDGA, HA) as an environment-friendly extractant. The influence of acid concentration in the aqueous phase, the ligand concentration in the organic phase, and the temperature on the extraction of U(VI) have been studied. The results from slope analysis methods reveal that the extraction of uranium is strongly pH-dependent and directed by cation-exchange mechanism. The proposed composition of the extracted complex species is UO2A2·HA with a core UO2A2 and one protonated ligand molecule binding to the second coordination sphere of the metal ion via hydrogen bonding. The extraction thermodynamic data demonstrate an exothermic reaction. The considerably high extraction affinity for uranium makes the HDEHDGA/kerosene system a promising candidate for the purification of water solutions from radioactive pollutants.
Experiment study on the treatment effect of the hydrocarbon degradation microorganism to treat the oily wastewater
Authors: Han Zhiyong , Du Chengzhen , Shang Ziming 
Published: April 2020

Abstract
In view of the large amount of oily wastewater, the complexity of pollutant composition and the difficulty of effective treatment, the idea to adopt the microbial technology to treat it is put forward and the influencing factors of oil-degrading microbial treatment of oily wastewater.optimal degradation conditions and degradation kinetics have been studied in depth. The degradation effect and the inflluecing factors of the hydrocarbon degradation microorganism to treat the oily wastewater were investigated in this study. Firstly, the hydrocarbon degradation microorganism which can degradate the oil pollutions quickly and effectively are screened and identificated and the physiological and biochemical characteristics are detaily reaearched.. Secondly, the influencing factors and effects of oil-degrading bacteria treatment of oily wastewater and the optimal degradation conditions, which including pH value, rude oil mass concentration and the biological inoculum size are studied in depth and determined. Thirdly, the degradation kinetics characteristics of the petroleum hydrocarbon degrading stains are investigated. At last, the degradation effect of the oil pollution under the optimal condition is studied as the focus research is studied to verify the biodegradation effects of the strains in order to provide some technical reference for the practical application of this technology. The research results indicate that: (1) the Petroleum hydrocarbon degrading bacteria we screened all have good treatment effect on oily wastewater; (2) Analytical identification of morphological and physiological and biochemical characteristics indicated that both JA and JB are all Pseudomonas sp and their optimal growth times are 18-23h, and 20-21h respectively; (3) The degradation effect of the mixed strain. on the pollutants is much better than that of the single one, Under the JA to JB mixed rate of 1:2, the average degradation rate of crude oil can be increased from 23.4% of the single bacteria to 49.6% of the mixed one; (4) The most important influencing factors affecting the degradation performance of petroleum-degrading bacteria are pH value, followed by crude oil mass concentration and biological inoculum. Among them, under the condition of pH 7.15, crude oil mass concentration of 3387mg/L and biological inoculum size of 75ml/L, the mixed bacteria had the highest degradation rate of crude oil, up to 55.76%.
Distribution of lead in soils within the plant area and adjacent farmland of a typical lead-related enterprise
Authors: Ding Liang , Cai Bingjie , Qu Changsheng , Wang Shui 
Published: April 2020

Abstract
In this study, an environmental site investigation was conducted of a typical lead (Pb)-related production plant. Based on a combination of manual and Geoprobe sampling, Pb concentrations in soils were measured using standard analytical methods to clarify the distribution of Pb concentrations in soils of the plant’s production workshops, open spaces within the plant, and in the adjacent farmland. The results show that the maximum depth of Pb pollution in the soil of the production workshop was 1.5 m. Pb pollution was found in the soil of the adjacent farmland within a range of 50 m from the plant and occurred at a maximum depth of 0.15 m. Probably as a result of the characteristics of Pb species, there was little horizontal movement of Pb observed in the sampled soils. Further, the solid ground surfaces in the plant (e.g., hardened concrete) effectively prevented the pollution of subsurface soil by Pb.
Pollution characteristics and risk assessment of surface sediments in nine plateau lakes of Yunnan Province
Authors: Cheng Na , Liu Laisheng , Hou Zelin , Wu Jiapeng , Wang Qiwen 
Published: April 2020

Abstract
Sediment is the indicator of nutrient and heavy metal pollution in water environment, which can obviously reflect the pollution state in lakes. This paper reviews the literature of surface sediment pollution assessment of nine plateau lakes (Dianchi Lake, Erhai Lake, Fuxian Lake, Qilu Lake, Lugu Lake, Yangzonghai Lake, Yilong Lake, Xingyun Lake and Chenghai Lake) in Yunnan Province in the past ten years. TN (TN), total phosphorus (TP), copper (Cu), zinc (Zn), lead (Pb), chromium (Cr), cadmium (Cd), nickel (Ni), arsenic (As), mercury (Hg) are selected. As an evaluation index, the average contents in surface sediments of nine plateau lakes were 3517.53 mg/kg, 1826.86 mg/kg, 72.52 mg/kg, 215.43 mg/kg, 39.51 mg/kg, 69.66 mg/kg, 1.31 mg/kg, 43.83 mg/kg, 12.77 mg/kg and 0.21 mg/kg, respectively. Nutrient and heavy metals in sediments were evaluated by single pollution index method, ground accumulation index method and potential ecological risk index method. The results showed that nutrient pollution was serious, and the average pollution level was heavy pollution. Eight kinds of heavy metals were in moderate or below the pollution level. Cd and Hg were the main contributing factors in the ecological risk assessment of heavy metals. The correlation analysis shows that the TN pollution in surface sediments of nine plateau lakes is related to the average water depth, recharge coefficient and population density of the lakes.
Review on oily sludge treatment technology
Authors: Li Xuening , Zhang Fusheng , Guan Baoshan , Sun Jianghe , Liao Gongqing 
Published: April 2020

Abstract
Oily sludge is one of the most important solid pollutants produced by petroleum industry. Due to the serious pollution and the increasing production of oily sludge year by year, how to effectively treat oily sludge is the focus of worldwide attention. This paper mainly introduces the source, characteristics, environmental impact, as well as traditional and newly developed oily sludge treatment technologies. With the improvement of national environmental protection requirements, oily sludge quality reduction, recyclable and harmless treatment technology will become the most potential technologies in the future.
Decomposition and measures of the driving factors for China’s industrial air pollution emissions at the prefectural level
Authors: Zhou Zhimin 
Published: April 2020

Abstract
The decomposition and measures of industrial air pollution emissions’ driving forces in China are helpful to sustainable development. They are also instructive for the Chinese government to functionally formulate policies for energy conservation and emission reduction, as well as to deal with climate change in practice. This study, for the first time, has applied Kaya identity and LMDI index decomposition method to empirically decompose and measure the driving factors of China’s industrial air pollution emissions based on prefecture-level cities. The results suggest that, over the past ten years, the per capita industrial air pollution emissions have increased from both state and regional perspective. The main reason for the increasing trend is the economy’s scale effects. Meanwhile, the technological effects and structural effects reduce pollution emissions in the long term. However the environmental-beneficial technology and structural effects are smaller than the scale effects, therefore such an increasing trend cannot be offset by the technological effects.
Application of bag filter in integrated technology of dry desulfurization and dust collection
Authors: Wang Chuan , Li Jian 
Published: April 2020

Abstract
A new technical route is explored to realize the integrated design of dry gas desulfurization and dust collection, combining dry duct injection technology with bag filter technology. Sodium bicarbonate (NaHCO3) was used as desulfurizer, outside and inside filtration bag filters were used as the main body of the reaction device. A series of experiments were carried out, and the temperature, NaHCO3 particle size, inlet SO2 concentration, sodium to sulphur ratio and dust concentration were evaluated. The results showed that the desulfurization reaction was mainly composed of two parts: the NaHCO3 injection section of duct and the filtration of bag filter. The desulfurization efficiency of the inside filtration was better than that of the outside filtration, and collection efficiency was maintained above 99.9%. From 130°C to 150°C, the desulfurization efficiency of both inside and outside filtration bag filter increased with temperature increased, but the efficiency decreased at the temperatures of 150°C∼200°C because of the thermal decomposition reaction of sodium bicarbonate. After adding 1000mg·m−3 dust, the desulfurization efficiency of both the inside filtration and outside filtration bag filters increased by 10%, and the trend of desulfurization efficiency with temperature was the same as that before adding dust. It was found that the desulfurization reaction was better with the NaHCO3 particles size was smaller, and the inlet SO2 gas concentration had little effect on the desulfurization efficiency.
Research on operation control strategy of user-side power routing device in market environment
Authors: Jin Xue , Huang Kun , Zhang Xiaoyan , Meng Xin , Wang Dan 
Published: April 2020

Abstract
Considering the demand of distributed power trading, a user-side power routing device topology is designed. The operation scenario of the device is divided into eight operation states, and the operation control strategy of the device system oriented to power trading is proposed for the eight operation states. In the process of power trading, grid-connected converters adopt Direct Power Control (DPC) to realize constant power trading. Super Capacitor (SC) adopt constant voltage control, Lithium battery adopt droop control, the Super Capacitor and the Lithium battery work together as the system bus voltage control unit. A simulation model is built on PSCAD/EMTDC platform, and two typical scenarios of power trading mode and non-trading mode are compared and analyzed. The simulation results verify the effectiveness of the proposed strategy.