نتایج جستجو برای: modified beech sawdust

تعداد نتایج: 255835  

Journal: :journal of safety, environment, and health research 0
hamid reza tashauoei department of environmental health engineering, school of public health, islamic azad university tehran medical branch, tehran, iran. sara hashemi research center for environmental pollutants and department of environmental health engineering, qom university of medical sciences roya ardani research center for environmental pollutants and department of environmental health engineering, qom university of medical sciences zeynab yavari environment research center, isfahan university of medical sciences, isfahan, iran mahdi asadi-ghalhari research center for environmental pollutants and department of environmental health engineering, qom university of medical sciences

sawdust is now being investigated as an adsorbent to remove contaminants from aqueous solution. heavy metals can be decreased very effectively with the organic material. in this research, adsorption of pb (ii) onto modified beech sawdust in a batch system was investigated. sawdust was collected from timber mill of qom, iran, and modified with h2so4 and naoh. then, the effects of various paramet...

2008
Ruxanda Bodîrlău Carmen Alice Teacă Iuliana Spiridon

Beech sawdust was reacted with phthalic (PA) and maleic (MA) anhydrides for chemical modification. The influence of reaction time and anhydride amount was investigated. IR spectra gave evidence of wood esterification. Thermogravimetric investigation of chemically modified wood indicated a better thermal stability (mainly for wood treated with phthalic anhydride) in comparison with the untreated...

Sawdust is now being investigated as an adsorbent to remove contaminants from aqueous solution. Heavy metals can be decreased very effectively with the organic material. In this research, adsorption of Pb (II) onto modified beech sawdust in a batch system was investigated. Sawdust was collected from timber mill of Qom, Iran, and modified with H2SO4 and NaOH. Then, the effe...

2016
F. S. Helal

209 ABSTRACT: In the present study, different activated carbons were prepared from carbonized African beech wood sawdust by potassium hydroxide activation. The activated carbons were characterized by brunauer–emmett–teller, scanning electron microscope, fourier transform infrared spectroscopy, and thermogravimetric analyzer. The phenol adsorption capacity of the prepared carbons was evaluated. ...

Journal: :global journal of environmental science and management 0
n.t. abdel-ghani chemistry department, faculty of science, cairo university, cairo, egypt g.a. el-chaghaby regional center for food and feed, agricultural research center, giza, egypt f.s. helal science and technology centerof excellence, ministry of military production, cairo, egypt

in the present study, different activated carbons were prepared from carbonized african beech wood sawdust by potassium hydroxide activation. the activated carbons were characterized by brunauer–emmett–teller, scanning electron microscope, fourier transform infrared spectroscopy, and thermogravimetric analyzer. the phenol adsorption capacity of the prepared carbons was evaluated. the different ...

2012
María Aranzazú López Leal Raúl Cortés Martínez Ruth Alfaro Cuevas Villanueva Héctor Eduardo Martínez Flores Jesús Cortés Penagos

The biosorption of As(V) from aqueous solutions by pine sawdust chemically modified with iron in batch systems was investigated. The loading process of Fe in this biomaterial was achieved by hydrolysis of two different ferric salts. This modification of sawdust is an attempt to improve As(V) biosorption for practical applications. The kinetics and maximum biosorption capacities of the unmodifie...

2011
Jiwan Singh N. S. Mishra Sushmita Banerjee Yogesh C. Sharma

The present paper aims to investigate the physical characteristics of sawdust relative to its use as an adsorbent for removal of an acid dye (Orange G) from aqueous solutions. The raw sawdust was sieved to have a uniform size and was activated by sulphuric acid by refluxing the content at 60 C for 4 h. Surface morphology and surface functional groups of both raw and modified sawdust samples wer...

In the present study, different activated carbons were prepared from carbonized African beech wood sawdust by potassium hydroxide activation. The activated carbons were characterized by brunauer–emmett–teller, scanning electron microscope, fourier transform infrared spectroscopy, and thermogravimetric analyzer. The phenol adsorption capacity of the prepared carbons was evaluated. The d...

Journal: :International journal of medicinal mushrooms 2012
Andrej Gregori Nadine Kretschmer Susanne Wagner Herbert Boechzelt Dusan Klinar Rudolf Bauer Franc Pohleven

Lentinus edodes (Berk.) Singer fruiting bodies were cultivated on substrates composed of beech sawdust, wheat bran, and calcium sulfate hemihydrate (gypsum), containing different proportions of olive oil press cakes (OOPC). We determined the influence of OOPC on fruiting bodies production and proliferation of CCRF-CEM leukemia cells. A negative influence of OOPC on mycelia growth and maturation...

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