A continuous fixed bed study was carried out by using PAN-oxime-nano Fe2O3 as a sorbent for the removal of nitrate from aqueous solution. The effect factors, such flow rate (2, 5 and 7 mL/min) depth (5, 10 15 cm) were studied. Data confirmed that breakthrough curves dependent on depth. adsoption capacities observed in diffent conditions rates (2,5 11.65, 24.38 25.89, respectively. Thomas model applied to experimental data predict linear regression determine characteristic parameters packed...

Legionella spp. are important waterborne pathogens that normally transmitted through aerosols. The present work was conducted to investigate the presence of and its common species in hospital water supplies. Considering limitations culture method, polymerase chain reaction (PCR) assays were developed detect gene 16S rRNA irrespective bacterial serotype. Four well-established DNA extraction protocols (freeze & thaw phenol-chloroform as two manual commercial kits) tested evaluated release from...

The majority of anthraquinone dye released to the environment come from antrapogenic sources. Several techniques are available for dyes' removal. In this study removal reactive blue 29 (RB29) by an advanced oxidation process sequenced with single wall carbon nanotubes was investigated. Advanced optimized over a period 60 minutes changing ratio acetic acid hydrogen peroxide, compounds which form peroxy acid. Reduction 20.2% -56.4% observed when peroxide/acetic acid/dye changed 344/344/1...

Abstract Neoplasm is an umbrella term used to describe either benign or malignant conditions. The correlations between socioeconomic and environmental factors the occurrence of new-onset neoplasms have already been demonstrated in a body research. Nevertheless, few studies specifically dealt with nature relationship, significance risk factors, geographic variation them, particularly low- middle-income communities. This study, thus, set out (1) analyze spatiotemporal variations age-adjusted...

Abstract Groundwater is a basic source of drinking water supply for urban and rural areas. This especially the case communities located in arid semi‐arid regions that rely on groundwater purposes. The present study set out to assess potential health impacts impurities investigate qualitative status Robat Karim areas, southwest Tehran, Iran. A total 66 samples were collected from distribution network 11 villages (33 sampling points, two occasions) during September 2020 tested terms most...

Background and purpose: Cancer is a noteworthy cause of morbidity mortality worldwide, especially in developing countries. It more often caused by the environment person lives in, rather than his or her innate biology. The highly significant rapid changes cancer incidence last decades are generally attributed to equally dramatic population exposure environmental factors.

Background: Iran detected its first COVID-19 case in February 2020 Qom province, which rapidly spread to other cities the country. Iran, as one of those countries with highest number infected people, has officially reported 1812 deaths from a total 23049 confirmed cases that we used analysis. Materials and Methods: Geographic distribution by map calculated incidence rates for COVID -19 within period was prepared GIS 10.6 Spatial autocorrelation (Global Moran’s I) hot spot analysis were...

Special features of nanoparticles have resulted in their widespread use. Small molybdenum trioxide (MoO 3) can translocate from the entry portals into circulatory and lymphatic systems ultimately to body tissues organs depending on composition size. In this research, sixty Wistar rats weighting 180-250 g were divided 6 groups (n=10) randomly: Group 1 (Control) did not receive any medicine. 2 (Sham) received intraperitoneal normal saline for 35 days a daily basis. Groups 3, 4, 5 50, 100, 200,...

Polyacrylonitrile (PAN)-oxime-nano Fe2O3 was used as an adsorbent for the removal of fluoride from water. The influences contact time, initial concentration, and dosage were investigated by batch equilibrium studies. rate adsorption rapid with being attained after 100 min. Langmuir isotherm model found to represent measured data well. process followed pseudo-first-order kinetic model. It that adsorbed could be easily desorbed replacing in deionized This indicates material recycled. results...

Fe 2 O 3 nano particles supported on functionalized poly-acrylonitrile was prepared. PAN-oxime-nano characterized by XRD, FTIR andTEMand used for fluoride adsorption. The adsorption capacity increased with increasing initial concentration and reaction time. Fluoride-removal performance of also tested in the presence various competing anions usually found drinking water. Competitive sorption between and competing showed a minimum preference chloride counterions. Carbonate greatest competitor...

ABSTRACT Release of antibiotics to the environment as a result wastewater effluent discharge is cause for concern worldwide, they pose potential threat human health and earth ecosystem. Penicillin amoxicillin are widely used antibiotics. Despite their rapid hydrolysis in aqueous matrices, presence investigated. The current study reported analysed state four hospital treatment plants (WWTPs) Gonbad Kavous, Iran, during 2019, from perspective penicillin G removals. WWTPs were sampled at...

Synthesized Fe0-rGO nanocomposite with ratio of 1/1 (w/w) was prepared and has been used as adsorbent for the removal Carbamazepine (CBZ) from aqueous solution. The characterized by various techniques such Fourier-transform infrared spectroscopy (FTIR), energy-dispersive X-ray (EDX), diffraction (XRD), Field Emission Scanning Electron Microscopy (FE-SEM) analyses. Linear experiments were performed to compare best fitting isotherms kinetics. Freundlich isotherm (R2>0.90) pseudo second order...

A novel adsorbent, Polyacrylonitrile (PAN)-oxime-nano-Fe2O3, was developed to remove nitrates from water. The properties of the adsorbent were characterized by transmission electron microscopy, X-ray diffraction, and Fourier transform infrared spectroscopy. Experiments carried out investigate adsorption kinetics desorption behaviour adsorbent. Langmuir, Freundlich, Dubinin–Radushkevich (D–R) isotherms determined results revealed that well explained model. experimental data fitted very...

The present work reports treatment of real dairy products wastewater by electrocoagulationflotation (ECF).The process was performed in a batch stainless steel reactor equipped with aluminum electrodes.The model attributed to ECF optimized employing response surface methodology (RSM) via operating variables viz.pH, current intensity, and electrolysis time view chemical oxygen demand (COD), total kjeldahl nitrogen (TKN), phosphorus (TP), turbidity, as well fat-oil-grease (FOG) removal from...

Background: The world's chemical industries are confronted with formidable environmental regulatory challenges in treating their wastewaters. Aerobic granulation is increasingly drawing interest of researchers engaging work the area biological wastewater treatment. Objectives: objective to develop a new cost-effective technique for treatment industry effluents. possibility and effectiveness this enhanced system were determined through mean diameter, relative hydrophobicity, sphericity,...

Background: The physicochemical composition of groundwater is affected by the quantity and quality surrounding aquifers which are in turn recharging from adjacent river waters. Methods: In present study, 20 surface 16 samples were collected pre- post-monsoon season Jajrood River basin, Tehran, Iran. analyzed for 18 water characteristics to assess qualities. Hydrogeochemical analyses also performed determine Water Quality Index (WQI) drinking evaluate factors governing characteristic study...