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https://www.readbyqxmd.com/read/28107720/enhanced-treatment-performance-of-coking-wastewater-and-reduced-membrane-fouling-using-a-novel-embr
#1
Bei Jiang, Cong Du, Shengnan Shi, Liang Tan, Meidi Li, Jiaxin Liu, Lanlan Xue, Xiangyu Ji
A novel EMBR (electric field applied in MBR) by placing stainless steel mesh cathode inside a flat membrane module and stainless steel mesh anode outside the module was built and operated to enhance the treatment performance of coking wastewater containing phenol, pyridine and quinoline and reduce the membrane fouling. The degradation rates of COD, phenol, pyridine and quinoline in EMBR with electric field (reactor A) were significantly higher than the sum of EMBR without electric field (reactor B) and only electro-catalytic degradation during the long-term treatment, confirming that a coupling effect was existed between biodegradation and electro-catalytic degradation process...
January 4, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28107710/in-vivo-assesment-of-the-genotoxic-and-oxidative-stress-effects-of-particulate-matter-on-echinogammarus-veneris
#2
Melissa Marcoccia, Lucilla Ronci, Elvira De Matthaeis, Andrea Setini, Cinzia Perrino, Silvia Canepari
Seven types of atmospheric dusts (road dust, soil dust, brake dust, desert dust, pellet ash and coke and certified material NIST1648a - urban dust) have been tested for their genotoxicity on specimens of Echinogammarus veneris, a small aquatic amphipod. Experiments were carried out in vivo, by exposing the animals for 24 h to water containing 25 mg/L of dust. Each dust has been chemically analyzed for ions, elemental carbon, organic carbon and for the soluble and insoluble fractions of elements. Non-specific damages to DNA have been evaluated by the comet test, while oxidative damages have been estimated by coupling the comet test with formamido pyrimidine DNA glycosylase reaction...
January 6, 2017: Chemosphere
https://www.readbyqxmd.com/read/28068645/characteristics-of-pah-tar-oil-contaminated-soils-black-particles-resins-and-implications-for-treatment-strategies
#3
Clément Trellu, Anja Miltner, Rosita Gallo, David Huguenot, Eric D van Hullebusch, Giovanni Esposito, Mehmet A Oturan, Matthias Kästner
Tar oil contamination is a major environmental concern due to health impacts of polycyclic aromatic hydrocarbons (PAH) and the difficulty of reaching acceptable remediation end-points. Six tar oil-contaminated soils with different industrial histories were compared to investigate contamination characteristics by black particles. Here we provide a simple method tested on 6 soils to visualize and identify large amounts of black particles (BP) as either solid aggregates of resinified and weathered tar oil or various wood/coke/coal-like materials derived from the contamination history...
December 31, 2016: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28051131/nitrogen-doped-carbon-derived-from-zif-8-as-a-high-performance-metal-free-catalyst-for-acetylene-hydrochlorination
#4
Songlin Chao, Fang Zou, Fanfan Wan, Xiaobin Dong, Yanlin Wang, Yuxuan Wang, Qingxin Guan, Guichang Wang, Wei Li
Acetylene hydrochlorination is a major industrial technology for manufacturing vinyl chloride monomer in regions with abundant coal resources; however, it is plagued by the use of mercury(II) chloride catalyst. The development of a nonmercury catalyst has been extensively explored. Herein, we report a N-doped carbon catalyst derived from ZIF-8 with both high activity and quite good stability. The acetylene conversion reached 92% and decreased slightly during a 200 h test at 220 °C and atmospheric pressure...
January 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28049073/variations-in-toxicity-of-semi-coking-wastewater-treatment-processes-and-their-toxicity-prediction
#5
Xiaoyan Ma, Xiaochang Wang, Yongjun Liu, Jian Gao, Yongkun Wang
Chemical analyses and bioassays using Vibrio fischeri and Daphnia magna were conducted to evaluate comprehensively the variation of biotoxicity caused by contaminants in wastewater from a semi-coking wastewater treatment plant (WWTP). Pretreatment units (including an oil-water separator, a phenols extraction tower, an ammonia stripping tower, and a regulation tank) followed by treatment units (including anaerobic-oxic treatment units, coagulation-sedimentation treatment units, and an active carbon adsorption column) were employed in the semi-coking WWTP...
December 31, 2016: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28043266/-relationship-between-urinary-polycyclic-aromatic-hydrocarbon-metabolite-and-cell-cycle-of-lymphocyte-in-coke-oven-workers
#6
B L Pan, H T Zhang, H J Zhang, W T Chen, J Yang
Objective: To investigate the relationship between urinary polycyclic aromatic hydrocarbon metabolite and cell cycle of lymphocyte in coke oven workers. Methods: 437 coke oven workers and 163 work-ers in water treatment department were recruited in this study. Flow cytometry was used to detect the cell cycle of lymphocyte. For the measurement of urinary metabolites, urine samples were treated with β-glucuronidase and analyzed using HPLC with a fluorescence detector. Results: The concentrations of urinary 2-naphthol, 2-hydroxyfluorene, 9-phenanthrol and 1-hydroxypyrene l in coke oven workers were significantly higher than those in control group (P<0...
November 20, 2016: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28040223/congener-profiles-distribution-sources-and-ecological-risk-of-parent-and-alkyl-pahs-in-surface-sediments-of-southern-yellow-sea-china
#7
Yanxia Lin, Wei Deng, Shengyong Li, Jiafu Li, Guoguang Wang, Dahai Zhang, Xianguo Li
Congener profiles, distribution and sources of parent and alkyl-polycyclic aromatic hydrocarbons (PAHs) in surface sediments of Southern Yellow Sea (SYS), China were investigated. The ecological risk of parent-PAHs to aquatic organisms were evaluated based on sediment quality guidelines (SQGs), risk quotient (RQ), organic carbon (OC)-normalized analysis and mean effects range-median quotient (M-ERM-Q). The concentrations of 33 PAHs were analyzed, including 14 parent PAHs (without naphthalene and acenaphthylene), 16 alkyl-PAHs (7 methylphenanthrenes, 3 methylanthracenes, 3 methylfluoranthenes, and 3 methylpyrenes), dibenzothiophene, retene and perylene...
December 28, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27996159/persistent-phosphorylation-at-specific-h3-serine-residues-involved-in-chemical-carcinogen-induced-cell-transformation
#8
Xiaonian Zhu, Daochuan Li, Zhengbao Zhang, Wei Zhu, Wenxue Li, Jian Zhao, Xiumei Xing, Zhini He, Shan Wang, Fangping Wang, Lu Ma, Qing Bai, Xiaowen Zeng, Jie Li, Chen Gao, Yongmei Xiao, Qing Wang, Liping Chen, Wen Chen
Identification of aberrant histone H3 phosphorylation during chemical carcinogenesis will lead to a better understanding of the substantial roles of histone modifications in cancer development. To explore whether aberrant H3 phosphorylation contributes to chemical carcinogenesis, we examined the dynamic changes of H3 phosphorylation at various residues in chemical carcinogen-induced transformed human cells and human cancers. We found that histone H3 phosphorylation at Ser10 (p-H3S10) and Ser28 (p-H3S28) were up-regulated by 1...
December 20, 2016: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/27993083/development-and-application-of-a-life-cycle-based-model-to-evaluate-greenhouse-gas-emissions-of-oil-sands-upgrading-technologies
#9
Diana M Pacheco, Joule A Bergerson, Anton Alvarez-Majmutov, Jinwen Chen, Heather L MacLean
A life cycle-based model, OSTUM (Oil Sands Technologies for Upgrading Model), which evaluates the energy intensity and greenhouse gas (GHG) emissions of current oil sands upgrading technologies, is developed. Upgrading converts oil sands bitumen into high quality synthetic crude oil (SCO), a refinery feedstock. OSTUM's novel attributes include the following: the breadth of technologies and upgrading operations options that can be analyzed, energy intensity and GHG emissions being estimated at the process unit level, it not being dependent on a proprietary process simulator, and use of publicly available data...
December 20, 2016: Environmental Science & Technology
https://www.readbyqxmd.com/read/27968834/methylation-loci-associated-with-body-mass-index-waist-circumference-and-waist-to-hip-ratio-in-chinese-adults-an-epigenome-wide-analysis
#10
Biqi Wang, Wenjing Gao, Jun Li, Canqing Yu, Weihua Cao, Jun Lv, Zengchang Pang, Liming Cong, Hua Wang, Xianping Wu, Liming Liang, Tangchun Wu, Liming Li
BACKGROUND: DNA methylation has been implicated in the pathology of obesity, but little is known about such epigenetic variants in Chinese people. We conducted an epigenome-wide analysis of methylation at CpG sites in relation to body mass index (BMI), waist circumference (WC) and waist-to-hip ratio (WHR) among Chinese adult populations. METHODS: 469 twins from the Chinese National Twin Registry were the discovery cohort. After quality control, methylation levels in whole blood leukocyte DNA were tested for association with BMI, WC, and WHR using mixed linear regressions, adjusting for demographics, lifestyle, and family structure...
October 2016: Lancet
https://www.readbyqxmd.com/read/27966663/synthesis-of-mesoporous-%C3%AE-fe2o3-nanoparticles-by-non-ionic-soft-template-and-their-applications-to-heavy-oil-upgrading
#11
Chulwoo Park, Jinhwan Jung, Chul Wee Lee, Joungmo Cho
This paper reports the synthetic route of 3-D network shape α-Fe2O3 from aqueous solutions of iron precursor using a non-ionic polymeric soft-template, Pluronic P123. During the synthesis of α-Fe2O3, particle sizes, crystal phases and morphologies were significantly influenced by pH, concentrations of precursor and template. The unique shape of worm-like hematite was obtained only when a starting solution was prepared by a weakly basic pH condition and a very specific composition of constituents. The synthesized nanocrystal at this condition had a narrow pore size distribution and high surface area compared to the bulk α-Fe2O3 or the one synthesized from lower pH conditions...
December 14, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27942673/correction-a-site-deficiency-facilitated-in-situ-growth-of-bimetallic-ni-fe-nano-alloys-a-novel-coking-tolerant-fuel-cell-anode-catalyst
#12
Yi-Fei Sun, Jian-Hui Li, Lin Cui, Bin Hua, Shao-Hua Cui, Jian Li, Jing-Li Luo
Correction for 'A-site-deficiency facilitated in situ growth of bimetallic Ni-Fe nano-alloys: a novel coking-tolerant fuel cell anode catalyst' by Yi-Fei Sun et al., Nanoscale, 2015, 7, 11173-11181.
December 12, 2016: Nanoscale
https://www.readbyqxmd.com/read/27925149/behavioural-interventions-to-promote-workers-use-of-respiratory-protective-equipment
#13
REVIEW
Bao Yen Luong Thanh, Malinee Laopaiboon, David Koh, Pornpun Sakunkoo, Hla Moe
BACKGROUND: Respiratory hazards are common in the workplace. Depending on the hazard and exposure, the health consequences may include: mild to life-threatening illnesses from infectious agents, acute effects ranging from respiratory irritation to chronic lung conditions, or even cancer from exposure to chemicals or toxins. Use of respiratory protective equipment (RPE) is an important preventive measure in many occupational settings. RPE only offers protection when worn properly, when removed safely and when it is either replaced or maintained regularly...
7, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27924683/electro-fenton-oxidation-of-coking-wastewater-optimization-using-the-combination-of-central-composite-design-and-convex-optimization-method
#14
Bo Zhang, Jiwei Sun, Qin Wang, Niansi Fan, Jialing Ni, Weicheng Li, Yingxin Gao, Yu-You Li, Changyou Xu
The Electro-Fenton treatment of coking wastewater was evaluated experimentally in a batch electrochemical reactor. Based on central composite design (CCD) coupled with response surface methodology, a regression quadratic equation was developed to model the TOC removal efficiency. This model was further proved to accurately predict the optimization of process variables by means of analysis of variance (ANOVA). With the aid of the convex optimization method, which is a global optimization method, the optimal parameters were determined as current density of 30...
December 7, 2016: Environmental Technology
https://www.readbyqxmd.com/read/27908627/validation-of-a-two-generational-reproduction-test-in-daphnia-magna-an-interlaboratory-exercise
#15
Carlos Barata, Bruno Campos, Claudia Rivetti, Gerald A LeBlanc, Stephanie Eytcheson, Stephanie McKnight, Marysia Tobor-Kaplon, Selinda de Vries Buitenweg, Suhyon Choi, Jinhee Choi, Elena I Sarapultseva, Marie-Agnès Coutellec, Maïra Coke, Pascal Pandard, Arnaud Chaumot, Hervé Quéau, Nicolas Delorme, Olivier Geffard, Fernando Martínez-Jerónimo, Haruna Watanabe, Norihisa Tatarazako, Isabel Lopes, João L T Pestana, Amadeu M V M Soares, Cecilia Manuela Pereira, Karel De Schamphelaere
Effects observed within one generation disregard potential detrimental effects that may appear across generations. Previously we have developed a two generation Daphnia magna reproduction test using the OECD TG 211 protocol with a few amendments, including initiating the second generation with third brood neonates produced from first generation individuals. Here we showed the results of an inter-laboratory calibration exercise among 12 partners that aimed to test the robustness and consistency of a two generation Daphnia magna reproduction test...
February 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/27898012/hydrodechlorination-of-tetrachloromethane-over-palladium-catalysts-supported-on-mixed-mgf%C3%A2-mgo-carriers
#16
Magdalena Bonarowska, Maria Wojciechowska, Maciej Zieliński, Angelika Kiderys, Michał Zieliński, Piotr Winiarek, Zbigniew Karpiński
Pd/MgO, Pd/MgF₂ and Pd/MgO-MgF₂ catalysts were investigated in the reaction of CCl₄ hydrodechlorination. All the catalysts deactivated in time on stream, but the degree of deactivation varied from catalyst to catalyst. The MgF₂-supported palladium with relatively large metal particles appeared the best catalyst, characterized by good activity and selectivity to C₂-C₅ hydrocarbons. Investigation of post-reaction catalyst samples allowed to find several details associated with the working state of hydrodechlorination catalysts...
November 25, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27894701/design-of-a-new-pid-controller-using-predictive-functional-control-optimization-for-chamber-pressure-in-a-coke-furnace
#17
Jianming Zhang
An improved proportional-integral-derivative (PID) controller based on predictive functional control (PFC) is proposed and tested on the chamber pressure in an industrial coke furnace. The proposed design is motivated by the fact that PID controllers for industrial processes with time delay may not achieve the desired control performance because of the unavoidable model/plant mismatches, while model predictive control (MPC) is suitable for such situations. In this paper, PID control and PFC algorithm are combined to form a new PID controller that has the basic characteristic of PFC algorithm and at the same time, the simple structure of traditional PID controller...
November 25, 2016: ISA Transactions
https://www.readbyqxmd.com/read/27894684/systematic-review-of-the-use-of-the-lymphocyte-cytokinesis-block-micronucleus-assay-to-measure-dna-damage-induced-by-exposure-to-polycyclic-aromatic-hydrocarbons
#18
REVIEW
Radim J Sram, Vlasta Svecova, Andrea Rossnerova
The effect of exposure to polycyclic aromatic hydrocarbons (PAHs) to induce micronuclei (MN) measured using the lymphocytes cytokinesis-block micronucleus (CBMN) assay were evaluated in 34 studies according to the exposure: 20 studies in coke oven workers, 7 studies in different occupational exposures as alluminium industry workers, rubber factory workers, road construction workers, airport workers and diesel exposed workers, 6 studies on environmentaly exposed groups as police, volunteers and children. Reviewed papers indicate that the CBMN assay is a sensitive biomarker of PAHs exposure in polluted air...
October 2016: Mutation Research
https://www.readbyqxmd.com/read/27885241/effects-of-coke-oven-emissions-and-benzo-a-pyrene-on-blood-pressure-and-electrocardiogram-in-coke-oven-workers
#19
Kai Yang, Xuejun Jiang, Shuqun Cheng, Chengzhi Chen, Xianqing Cao, Baijie Tu
OBJECTIVE: To evaluate the effects of occupational exposures to coke oven emissions (COEs) and benzo[a]pyrene (B[a]P) on the prevalence of hypertension and abnormal electrocardiogram (ECG) in coke oven workers. METHODS: We included 880 coke oven workers and 710 oxygen employees in the exposed and control groups, respectively. Blood pressure (BP), ECG, blood lipid levels, and glucose levels of all subjects were measured. COE and B[a]P concentrations at the bottom, side, and top of the oven and control plants were estimated by weighing and high-performance liquid chromatography...
November 22, 2016: Journal of Occupational Health
https://www.readbyqxmd.com/read/27884050/taking-the-sweetness-out-of-the-share-a-coke-marketing-campaign-the-influence-of-personalized-labelling-on-elementary-school-children-s-bottled-drink-choices
#20
F McDarby, D O'Hora, D O'Shea, M Byrne
BACKGROUND: Drink personalization (featuring names on bottle labels) has been used by soft drink companies to make their drinks attractive to children, potentially increasing consumption. To date, no publically available research has evaluated the influence of personalization on children's drink choices. OBJECTIVES: To determine (i) whether personalizing bottled drinks influences children's drink choices; (ii) whether it is comparably effective in promoting healthy and unhealthy drinks and (iii) whether drink choices are affected by self-esteem, body mass index and parental factors...
November 24, 2016: Pediatric Obesity
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