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Improved atmospheric mercury simulation using updated gas-particle partition and organic aerosol concentrations

Journal of environ.ental Sciences 2022年第9期34卷 106-118页

作者： Kaiyun Liu Qingru Wu Shuxiao Wang Xing Chang Yi Tang Long Wang Tonghao Liu Lei Zhang Yu Zhao Qin’geng Wang Jinsheng Chen State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex Beijing 100084China Institute of Atmospheric Environment Guangdong provincial academy of environmental scienceGuangzhou 510045China China National Environmental Monitoring Centre Beijing 100012China State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing210023China Center for Excellence in Regional Atmos.Environ. Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China

The gaseous or particulate forms of divalent mercury(HgⅡ) significantly impact the spatial distribution of atmospheric mercury concentration and deposition flux(FLX). In the new nested-grid GEOS-Chem model, we try to modify the HgⅡ gas-particle partitioning relationship with synchronous and hourly observations at four sites in China. Observations of gaseous oxidized Hg(GOM), particulate-bound Hg(PBM), and PM 2.5 were used to derive an empirical gas-particle partitioning coefficient as a function of temperature( T) and organic aerosol(OA) concentrations under different relative humidity(RH). Results showed that with increasing RH, the dominant process of HgⅡ gas-particle partitioning changed from physical adsorption to chemical desorption. And the dominant factor of HgⅡ gas-particle partitioning changed from T to OA concentrations. We thus improved the simulated OA concentration field by introducing intermediate-volatility and semi-volatile organic compounds(I/SVOCs) emission inventory into the model framework and refining the volatile distributions of I/SVOCs according to new filed tests in the recent literatures. Finally, normalized mean biases(NMBs) of monthly gaseous element mercury(GEM), GOM, PBM, WFLX were reduced from-33%–29%, 95%–300%, 64%–261%, 117%–122% to-13%–0%,-20%–80%,-31%–50%,-17%–23%. The improved model explains 69%–98% of the observed atmospheric Hg decrease during 2013–2020 and can serve as a useful tool to evaluate the effectiveness of the Minamata Convention on Mercury.

关键词： Nested GEOS-Chem model HgⅡgas-particle partitioning Organic aerosol Atmospheric mercury Mercury deposition flux

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Research Progress on Corrosion of Oil and Gas Field Gathering Pipeline in H2S-CO2-Cl-System

Research Progress on Corrosion of Oil and Gas Field Gatherin...

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2020 International Conference on Green Energy, environ.ent and Sustainable Development, GEESD 2020

作者： Wang, Yanfei Li, Jinling Qu, Chengtun Li, Wanjing Baba Pali, Muhammad Zheng, Hao College of Chemistry and Chemical Engineering Shaanxi Prov. Key Lab. of Environ. Poll. Control and Reservoir Protection Technology of Oil Fields Xi'An Shiyou University Xi'an China State Key Laboratory of Petroleum Pollution Control CNPC Research Institute of Safety and Environmental Technology Beijing102206 China

With the development of the oil and gas field industry, the corrosion of metal materials in the H2S/CO2 environ.ent has greatly restricted the development of the oil and gas industry. The corrosion of metal materials has gradually been paid attention to. The corrosion of steel under the H2S-CO2-Cl- system has been studied. Imminent. This paper briefly describes the corrosion and types of H2S and CO2 in steel for gathering pipelines, focusing on the reaction mechanism of corrosion, so as to achieve a more accurate grasp of corrosion laws and provide a theoretical basis for the development of new protection technologies. keywords. H2S/CO2 environ.ent;gathering pipeline steel;corrosion. © Published under licence by IOP Publishing Ltd.

关键词： Carbon dioxide

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Toxic Rational Analysis of Oily Sludge and Its Treatment Residues

Toxic Rational Analysis of Oily Sludge and Its Treatment Res...

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2020 International Conference on Green Energy, environ.ent and Sustainable Development, GEESD 2020

作者： Li, Wanjing Yu, Tao Qu, Chengtun Zheng, Hao Wang, Yanfei College of Chemistry and Chemical Engineering Shaanxi Prov. Key Lab. of Environ. Poll. Control and Reservoir Protection Technology of Oil Fields Xi'An Shiyou University Xi'an China State Key Laboratory of Petroleum Pollution Control CNPC Research Institute of Safety and Environmental Technology Beijing102206 China

In view of the present situation of oily sludge pollution, the different treatment methods for oily sludge in different uses were briefly described. The composition and structure of oily sludge are affected by sludge type, source, pyrolysis conditions and subsequent treatment conditions, which lead to different treatment methods and treatment effects. At present, there is no unified standard for the treatment of oily sludge at home and abroad, which brings difficulties to the unified management of oily sludge treatment. Through the toxicity analysis of oily sludge and its residues, it is helpful to judge the harmfulness of oily sludge and its treatment residues, according to the harmfulness of oily sludge, effectively choose different follow-up treatment methods, it is beneficial to establish the scientific standard of oily sludge treatment. In this paper, the present post-treatment indexes of petroleum hydrocarbon content, heavy metal ion content, water content, Polycyclic aromatic hydrocarbon content and sulfur content in oily sludge are summarized. © Published under licence by IOP Publishing Ltd.

关键词： Polycyclic aromatic hydrocarbons

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Basic Characteristics and Application Progress of Supercritical Water

Basic Characteristics and Application Progress of Supercriti...

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2020 International Conference on Green Energy, environ.ent and Sustainable Development, GEESD 2020

作者： Zheng, Hao Yu, Tao Qu, Chengtun Li, Wanjing Wang, Yanfei College of Chemistry and Chemical Engineering Shaanxi Prov. Key Lab. of Environ. Poll. Control and Reservoir Protection Technology of Oil Fields Xi'An Shiyou University Xi'an China State Key Laboratory of Petroleum Pollution Control CNPC Research Institute of Safety and Environmental Technology Beijing102206 China

Compared with water at normal temperature and normal pressure, supercritical water had large differences and also had some unique characteristics. In this paper, some basic physical properties of supercritical water, included density, viscosity, thermal conductivity, dielectric constant, ion product, hydrogen bond, diffusion coefficient and solubility, were introduced. Some applications of supercritical water oxidation technology in waste treatment, hydrogen production by supercritical water gasification of coal and supercritical hydr thermal synthesis, were discussed. © Published under licence by IOP Publishing Ltd.

关键词： Waste treatment

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Synthesis and surface activity evaluation of new surfactants derived from cetyl betaine 4

Synthesis and surface activity evaluation of new surfactants...

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4th International Symposium on Resource Exploration and environ.ental Science, REES 2020

作者： Yang, Jian Liu, Anbin Li, Ze Ma, Yanfeng Lv, Shiyi Dong, Sanbao Oil Production No.1 Changqing Oilfield Company Yanan China Shaanxi Prov. Key Lab. of Environ. Poll. Control and Reservoir Protection Technology of Oilfields Xi'an Shiyou University Xi'an China State Key Laboratory of Petroleum Pollution Control Cnpc Research Institute of Safety and Environmental Technology Beijing China

Because the surface tension, foaming ability, high temperature resistance, methanol resistance, salt resistance and foam shape of the single cetyltrimethylammonium chloride and cetyltrimethylammonium chloride reaction with formaldehyde are not very significant. Therefore, the product HM-CTAC and cetyl betaine were selected to optimize the compound ratio and further evaluate the performance of the compound product. The foam volume decreases gradually with the increase of temperature;in the aspect of methanol resistance: The foam volume of the compound surfactant disappears slowly under the same methanol concentration;in the aspect of salt resistance: The foam height is more stable with the increase of salt concentration in the system, and the half-life decreases gradually;the surface tension and foam microscopic: The surface tension of the compound system decreases. © Published under licence by IOP Publishing Ltd.

关键词： Methanol

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Interactions between engineered nanoparticles and dissolved organic matter: A review on mechanisms and environ.ental effects

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Journal of environ.ental Sciences 2018年第1期30卷 198-217页

作者： Sujuan Yu Jingfu Liu Yongguang Yin Mohai Shen State Key Laboratory of Environ. Chem. and Ecotoxicology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences School of Environment Henan Normal University Key Laboratory for Yellow River and Huai River Water Environment and Pollution ControlMinistry of Education Henan Key Laboratory for Environmental Pollution Control

Dissolved organic matter（DOM） is ubiquitous in the environ.ent and has high *** engineered nanoparticles（ENPs） are released into natural systems, interactions of DOM with ENPs may significantly affect the fate and transport of ENPs, as well as the bioavailability and toxicity of ENPs to organisms. However, because of the complexity of DOM and the shortage of useful characterization methods, large knowledge gaps exist in our understanding of the interactions between DOM and ENPs. In this article, we systematically reviewed the interactions between DOM and ENPs, discussed the effects of DOM on the environ.ental behavior of ENPs, and described the changes in bioavailability and toxicity of ENPs caused by DOM. Critical evaluations of published references suggest further need for assessing and predicting the influences of DOM on the transport,transformation, bioavailability, and toxicity of ENPs in the environ.ent.

关键词： Dissolved organic matter Engineered nanoparticles Interaction mechanisms environ.ental behavior Toxicity Bioavailability

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Characterization of compositions in crude oil and the effect of inhibitor on the crystallization of paraffin

Characterization of compositions in crude oil and the effect...

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2019 International Conference on Oil and Gas Engineering and Geological Sciences, OGEGS 2019

作者： Peng, Sen Tang, Xiaoben Yang, Anguo Chen, Shijun Chen, Gang Dong, Sanbao Henan Petroleum Exploration Bureau Co. Ltd. Nanyang China Shaanxi Prov. Key Lab. of Environ. Poll. Control and Reservoir Protection Technology of Oilfields Xi'An Shiyou University Xi'an China State Key Laboratory of Petroleum Pollution Control CNPC Research Institute of Safety and Environmental Technology Beijing China

Flowability is one of the important characters of a crude oil in pipelines. The viscosity of one crude oil is affected by many factors (e.g., temperature, water cut, composition distribution, paraffin deposition, etc.). In this study, IR, thermogravimetry analysis (TGA) and UV measurement are employed to characterize the composition of the crude oil (HN-1) provided by Henan Oilfield. The paraffin morphology analysis is employed to rate the property of a mixture of paraffin inhibitors and analysis the mechanism of the paraffin inhibition. © 2019 IOP Publishing Ltd.

关键词： Crude oil

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Wax Inhibitor Screening by Differential Scanning Calorimeter for High Wax Content Crude Oil 3

Wax Inhibitor Screening by Differential Scanning Calorimeter...

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3rd International Symposium on Resource Exploration and environ.ental Science, REES 2019

作者： Zhang, Zhifang Gao, Wenwen Yun, Bo Lu, Xiao Chen, Shijun Gu, Xuefan School of Chemistry and Chemical Engineering Yulin University Yulin China Oil Production Plant No. 11 PetroChina Changqing Oilfield Company Xi'an China Shaanxi Prov. Key Lab. of Environ. Poll. Control and Reservoir Protection Technology of Oilfields Xi'An Shiyou University Xi'an China State Key Laboratory of Petroleum Pollution Control CNPC Research Institute of Safety and Environmental Technology Beijing China

In order to investigate the wax inhibition performance of various inhibitors different scanning calorimetric (DSC), a powerful and quickly technique having no request of sample pretreatment, has been used for investigation the thermal characteristics of the wax remover. According to the parameters such as wax appearance temperature (WAT), content of wax and rheology, it is found that the best wax removing rate can be reached to 457mg/L•h under 40 C with 150mg/L surfactant combination (fatty alcohol polyoxyethylene ether + calcium petroleum sulfonate + mixed alcohol). © 2019 IOP Publishing Ltd. All rights reserved.

关键词： Surface active agents

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Research of the remaining oil displacement in Chang 8 low permeability reservoir in Fanxue area of Ordos Basin 3

Research of the remaining oil displacement in Chang 8 low pe...

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3rd International Symposium on Resource Exploration and environ.ental Science, REES 2019

作者： Wang, Yanglong Yan, Qibin Yan, Jiao Deng, Qiang School of Geoscience and Technology Southwest Petroleum University Chengdu610500 China Dingbian Oilfield Yanchang Oilfield Company Yulin718600 China Shaanxi Prov. Key Lab. of Environ. Poll. Control and Reservoir Protection Technology of Oilfields Xi'An Shiyou University Xi'an710065 China State Key Laboratory of Petroleum Pollution Control CNPC Research Institute of Safety and Environmental Technology Beijing102200 China

In Fanxue area of Ordos Basin, Chang 8 Oil Group has been in the development stage, the current development of more difficult and costly. In this paper, Chang 8 layers in this area are studied by using reservoir sedimentology, logging geology, petroleum geology, petrophysics, 3D reservoir modeling and numerical simulation and laboratory analysis techniques. The reservoir distribution pattern, remaining oil distribution pattern and well pattern optimization provide relevant technical results for the later development and provide guarantee for increasing reserves and production. © Published under licence by IOP Publishing Ltd.

关键词： Petroleum reservoir engineering

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Innovation and application of an automatic control system for gas wells production in sulige gas field

Innovation and application of an automatic control system fo...

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International Conference on Mechanical, Electric and Industrial Engineering, MEIE 2018

作者： Duan, Wenguang Chen, Gang China National Petroleum Corporation Xibu Drilling Engineering Company Limited Science and Technology Department Urumqi XinJiang830011 China State Key Laboratory of Petroleum Pollution Control CNPC Research Institute of Safety and Environmental Technology Beijing102206 China College of Chemistry and Chemical Engineering Xi'An Shiyou University Xi'an Shaanxi710065 China Shaanxi Prov. Key Lab. of Environ. Poll. Control and Reservoir Protection Technology of Oilfields Xi'an Shaanxi710065 China

In this paper, based on the advantages of imported control system and equipment, we designed a new type of automatic control system and equipment for gas well dewatering, by which the daily use of mobile phone can be used as a remote control terminal system. It has the advantages of convenient use, low cost, no need to design the PC software, free maintenance and upgrade PC software costs. Sulige Gas Field has used this system on 20 wells for mass operation test. The systems are till working until now, the equipment runs stably, and the economic benefit is remarkable. U disk data extraction is fast and convenient, and the management cost is reduced by 80%. The number of managing wells of per person is increased. © Published under licence by IOP Publishing Ltd.

关键词： control systems

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