نتایج جستجو برای: Natural Organic Matter

تعداد نتایج: 851631  

Journal: :hormozgan medical journal 0
سارا نوشادی sara noshadi ولی علیپور vali alipour محسن حیدری mohsen heidari کاووس دیندارلو اینالو kavoos dindarloo inaloo

abstract introduction: due to environmental and human health concerns related to humic acid (ha), mainly leading to disinfection by-products creation, removal or reduction of this matters is a necessary for drinking water suppliers. based on resistive economy map road and move to self-sufficiency, it is necessary to produce our need in water treatment industry. one of the main consumed material...

Journal: :jundishapur journal of health sciences 0
mehdi vosoughi niri department of environmental health engineering, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran; department of environmental health engineering, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran. tel: +98-9386939465, fax: +98-6133721675 amir hosein mahvi department of environmental health engineering, school of public health, tehran university of medical sciences, tehran, ir iran; national institute of health research, tehran university of medical sciences, tehran, ir iran mohammad javad mohammadi department of environmental health engineering, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran; razi hospital, ahvaz jundishapur university of medical sciences, ahvaz, ir iran afshin takdastan department of environmental health engineering, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran amir zahedi department of environmental health engineering, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran bayram hashemzadeh department of environmental health, khoy school of nursing and public health, urumia university of medical sciences, urumia, ir iran

results the batch kinetics experiments showed that nom adsorption by the adsorbents followed the pseudo-second order model. results showed that the acidic ph is optimum for adsorption of nom by smz. conclusions the findings of this study show that natural zeolite modified with sodium dodecyl sulfate, as a cationic surfactant, is a promising adsorbent for removal of nom. materials and methods in...

Journal: :health scope 0
amir hosein mahvi department of environmental health engineering, school of public health, tehran university of medical sciences, tehran, ir iran; center for solid waste research, institute for environmental research, tehran university of medical sciences, tehran, ir iran mehdi vosoughi department of environmental health engineering, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran; student research committee, ahvaz jundishapur university of medical sciences, ahvaz, ir iran; department of environmental health engineering, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran. tel: +98-9386939465, fax: +98-6113361544 mohammad javad mohammadi department of environmental health engineering, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran; clinical research development center, razi teaching hospital, ahvaz jundishapur university of medical sciences, ahvaz, ir iran anvar asadi department of environmental health, school of public health, shahid beheshti university of medical sciences, tehran, ir iran bayram hashemzadeh department of environmental health, khoy school of nursing and public health, urmia university of medical sciences, urmia, ir iran amir zahedi department of environmental health engineering, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran

conclusions the findings of this study showed that the modification of natural zeolites can achieve higher adsorption capacity for organics. in addition, based on the results, natural zeolite being modified with sds as a cationic surfactant had good efficiency for the adsorption of nom. results the results indicated that sds-modified zeolite showed greatly enhanced adsorption capacity. findings...

Mahmood Alimohammadi, Masoomeh Askari Mohammad Hadi Dehghani Mohammad Mahdi Emamjomeh Shahrokh Nazmara

Natural organic matter (NOM) affects some qualitative parameters of water such as color. In addition, it can deteriorate the performance of water treatment process including coagulation, adsorption, and membranes. NOM also reacts with chlorine in the chlorination process and may form disinfection by-products. The present study was carried out in laboratory-scale in a batch system using a cylind...

Journal: :international journal of environmental research 0

land cover change constitutes one of main way of alteration of soil organic matter in both quantitative and qualitative terms. the goal of this study was to compare the carbon stock and the isotopic signature of the organic matter in the soil of areas with different land use, covered with forest and grass (pasture). the study area is located at sorocaba, sp, brazil. using un-deformed soil sampl...

2016
Urban J. Wünsch Kathleen R. Murphy Colin A. Stedmon

Citation: Wünsch UJ, Murphy KR and Stedmon CA (2016) Corrigendum: Fluorescence Quantum Yields of Natural Organic Matter and Organic Compounds: Implications for the Fluorescence-based Interpretation of Organic Matter Composition. Front. Mar. Sci. 3:9. doi: 10.3389/fmars.2016.00009 Corrigendum: Fluorescence Quantum Yields of Natural Organic Matter and Organic Compounds: Implications for the Fluor...

2015
Urban J. Wünsch Kathleen R. Murphy Colin A. Stedmon

Citation: Wünsch UJ, Murphy KR and Stedmon CA (2015) Fluorescence Quantum Yields of Natural Organic Matter and Organic Compounds: Implications for the Fluorescence-based Interpretation of Organic Matter Composition. Front. Mar. Sci. 2:98. doi: 10.3389/fmars.2015.00098 Fluorescence Quantum Yields of Natural Organic Matter and Organic Compounds: Implications for the Fluorescence-based Interpretat...

Journal: :Separation and Purification Technology 2001

Background and purpose: Natural Organic Matter (NOM) is precursor of disinfection by-products (DBPs) during chlorination, so removal of NOM from drinking water resources is a necessary task. Due to organophilic properties, Surfactant Modified Zeolite (SMZ) can adsorb more NOM. The aim of this study was to determine and compare the efficiency of NZ and SMZ in removal of Dissolved Organic...

Different land uses have various effects on the changes of soil properties. The purpose of this study was to evaluate the effects of natural forest, needle-leaved plantation and rangelands of central Alborz on new indices of soil quality (i.e. organic matter stratification, carbon management index and soil biological activities). For this purpose, eight samples from organic layer (litter) and m...

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