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81.
Zhenyu Wang Feng Pan Abd El-Latif Hesham Yingxin Gao Yu Zhang Min Yang 《环境科学学报(英文版)》2015,37(11):192-199
The purpose of this study was to reveal how activated sludge communities respond to influent quality and indigenous communities by treating two produced waters from different origins in a batch reactor in succession. The community shift and compositions were investigated using Polymerase Chain Reaction–denaturing gradient gel electrophoresis(PCR–DGGE) and further16 S ribosomal DNA(r DNA) clone library analysis. The abundance of targeted genes for polycyclic aromatic hydrocarbon(PAH) degradation, nah Ac/phn Ac and C12O/C23 O, was tracked to define the metabolic ability of the in situ microbial community by Most Probable Number(MPN) PCR. The biosystem performed almost the same for treatment of both produced waters in terms of removals of chemical oxygen demand(COD) and PAHs. Sludge communities were closely associated with the respective influent bacterial communities(similarity 60%), while one sludge clone library was dominated by the Betaproteobacteria(38%) and Bacteriodetes(30%)and the other was dominated by Gammaproteobacteria(52%). This suggested that different influent and water quality have an effect on sludge community compositions. In addition, the existence of catabolic genes in sludge was consistent with the potential for degradation of PAHs in the treatment of both produced waters. 相似文献
82.
Commercially known Ahmer oxide paints are prepared from raw material mainly composed of red iron oxides (hematite) and iron oxyhydroxides. The raw material used in manufacturing of Ahmer oxide comes from some localities in southwest Sinai such as Abu Thor, Allouga, and El lehian. The adsorption of uranium and other radioelements on iron oxides could make the raw material (red iron oxides) and their products environmentally hazardous. The studied samples were subjected to radiometric analysis using NaI (Tl) gamma-ray spectrometer. The average activity concentration of U, Th, Ra, and K are 108.7, 458.8, 88.8, and 627.5?Bq?kg?1, respectively in raw material and 136.4, 14.6, 58.3, and 95.9?Bq?kg?1 in Ahmer oxide. High values of activity concentrations of 238U, 226Ra, and 40K were recorded in Allouga and El lehian raw material. High radioactivities of Allouga and El lehian raw material are mainly attributed to the presence of torbernite, zircon, and monazite, in addition to adsorbed elemental uranium in Ahmer oxide. absorbed dose rate (D), annual effective dose equivalent, radium equivalent activity (Raeq), external hazard index (Hex), and internal hazard index (Hin), as well as representative gamma index (Iγ) were determined from the activity concentrations of 226Ra, 232Th, and 40K. Some of the studied samples do not satisfy the universal standards. 相似文献
83.
Ebaid Hossam Abd Rabou Abdel-Mageed Ahmed Al-Tamimi Jameel Homoud Hassan Iftekhar Rady Ahmed Mostafa El-Newehy Mohamed Hassan Mashaly Ashraf Mohamed Abdel-Megeed Ahmed AbdelFattah Mahmoud Alhazza Ibrahim Abdel-Halim Essam Sayed Salem Abdelfattah Zeidan Mohamed 《Environmental science and pollution research international》2020,27(32):40009-40019
Environmental Science and Pollution Research - Oil spills can result in significant damage to marine estuaries, rivers, lakes, wetlands, and shorelines. Electrospun nanofibers containing... 相似文献
84.
Omar Ael-D Belal EB El-Abd Ael-N 《Journal of the Air & Waste Management Association (1995)》2012,62(7):767-772
Sixteen-year-old navel orange trees at a private orchard located in Kafer El-Sheikh Governorate, Egypt, were used in this study. Compost tea (CT) and filtrate biogas slurry liquid (FLB) were applied at two different concentrations (50% and 100%); control trees were sprayed with water Trees treated with CT at 100% were the highest in yield, fruit weight, and vitamin C, whereas the highest percentage of fruit set, fruit number and soluble solid content (SSC), lowest fruit drop, and highest reducing and total sugars were in trees treated with 100% FLB. Concentrations at 50% for both foliar application (CT and FLB) improved yield and fruit characteristics than control treatment. Generally, using a foliar application of compost tea and filtrate biogas slurry liquid at (100%) treatments as food nutrients could be recommended to improve the yield and fruit quality of navel orange fruits under the current study conditions. 相似文献
85.
86.
Mohamed Shaban Mohamed Rabia Walid Fathallah Neama Abd El-Mawgoud Asmaa Mahmoud Heba Hussien Omnia Said 《Journal of Polymers and the Environment》2018,26(2):434-442
Polyaniline (PANI) and Ag/PANI nanoporous composite were prepared by an oxidative polymerization method. The oxidation process of PANI nanoparticles was occurred using (NH4)2S2O8 while the oxidation process of Ag/PANI nanoporous composite was occurred using AgNO3 under the effect of artificial radiation. The structural, morphological, and optical properties of the PANI and Ag/PANI nanoporous structures were studied using different characterization tools. The results confirm the formation of polycrystalline nanoporous PANI and spherical nanoporous composite of Ag/PANI particles. Antibacterial activity tests against gram-positive bacteria, Bacillus subtilis and Staphylococcus aureus, and gram-negative bacteria, Escherichia coli, and Salmonella species were carried out using different concentrations of PANI nanoparticles and Ag/PANI nanoporous composites. PANI has not antibacterial effect against all studied pathogens. In contrast, Ag/PANI nanoporous composites possessed antibacterial activity that is identified by the zone of inhibition. The inhibition zones of bacteria are in order; Salmonella species?>?S. aureus?>?B. subtilis?>?E. coli. The inhibition zones of all bacteria increased with increasing concentrations of Ag/PANI nanoporous composites from 200 to 400 ppm then decreased with further increasing of the dose concentrations to 600 ppm. Finally, a simplified mechanism based on the electrostatic attraction is presented to describe the antimicrobial activity of Ag/PANI nanoporous composite. 相似文献
87.
Classification of dimension stone wastes 总被引:1,自引:0,他引:1
Karaca Z Pekin A Deliormanlı AH 《Environmental science and pollution research international》2012,19(6):2354-2362
Purpose
For countries in which the stone industry is well developed, opposition to quarry and plant waste is gradually increasing. The primary step for waste control and environmental management is to define the problem of concern. In this study, natural building stone wastes were classified for the first time in the literature.Methods
Following on-site physical observations and research at more than 50 quarries and 20 plants, stone wastes were classified as (1) solid, (2) dust and (3) semi-slurry, slurry and cake.Conclusions
As a result of this study, the characteristics of wastes, their main environmental threats and the industries in which wastes could be used were defined for each group. 相似文献88.
Khairy MA Kolb M Mostafa AR El-Fiky A Bahadir M 《Environmental science and pollution research international》2012,19(3):794-811
Introduction
In Egypt, the picture of threats to humans and the environment from the exposure to organic pollutants is still incomplete. Thus the objectives of this study were to assess the occurrence and distribution of polychlorinated biphenyls (PCBs), organochlorine pesticides, and chlorpyrifos in sediments and mussels of Abu Qir Bay and their risks for environment and human health. 相似文献89.
Abdraboh Mohamed E. El-Missiry Mohamed A. Othman Azza I. Taha Ahmed Nageeb Elhamed Dalia S. Abd Amer Maggie E. 《Environmental science and pollution research international》2022,29(40):60371-60384
Environmental Science and Pollution Research - Exposure to light at night, pineal gland impairment, and the environmental pollutant trichloroethylene (TCE) have serious implications for health and... 相似文献
90.
Mona Mohamed H. El-Khodary Gihan M. Abdel-Halim Khaled Y. Omran Nahla E. Abd El-Aziz Karolin K. El-Saidy Salwa A. 《Environmental science and pollution research international》2022,29(7):9971-9989
Environmental Science and Pollution Research - Bivalves are considered a main consumed matrix for coastal communities worldwide and classified as hyperaccumulators of pollutants. The present study... 相似文献