نتایج جستجو برای: bone char

تعداد نتایج: 308207  

ژورنال: سلامت کار ایران 2013
جعفری, محمد جواد, رضایی, عباس, قاسمی, فخر الدین,

  Background and aims : Microorganisms are one of the most important sources of contamination in indoor air and occupational environments especially in hospitals. The aim of this study was to evaluate the adsorption characteristics of bone char to adsorb B. Subtilis in the air.   Methods: In this study B.subtilis spores were used as a model of bacterial spores. Also bone char was used as an ads...

2014
Juan Liu Dezheng Gao Shiming Deng Jing Liu

The technologies of treating acid mine drainage (AMD) commonly include active and passive treatment. The coating technology can enhance the removal performance of some low-cost adsorbents. This study adopted Langmuir and Freundlich isotherm to fit the batch experimental dates. The results show that the Qmax of coated bone char could increase 78.83 times than uncoated bone char. However, the coa...

Journal: :jundishapur journal of health sciences 0
ghorban asgari department of environmental health engineering, school of health, hamadan university of medical sciences, hamedan, ir iran edris hoseinzadeh department of environmental health engineering, school of public health, lorestan university of medical sciences, khorramabad,, ir iran mahmood taghavi department of environmental health engineering, school of public health, mazandaran university of medical sciences, sari,, ir iran mahmood taghavi department of environmental health engineering, school of public health, mazandaran university of medical sciences, sari,, ir iran javad jafari department of environmental health engineering, school of health, hamadan university of medical sciences, hamedan, ir iran abdolmotaleb sidmohammadi department of environmental health engineering, school of health, hamadan university of medical sciences, hamedan, ir iran

as dyes are the most important pollutants of many industrial wastewaters. a large amount of reactive black 5 enters the environment in iran because of the use of this dye in iran's textile industries, so the goal of this study was to survey the catalytic ozonation process with bone char in removal of reactive black 5 dye from synthetic wastewater. in this experimental study bone char (bc) was p...

Journal: :Journal of water and health 2010
Sunisa Smittakorn Nithat Jirawongboonrod Surat Mongkolnchai-arunya Deanna Durnford

High levels of fluoride in groundwater are a significant environmental and health problem in Thailand, as in many parts of the world. Small household defluoridators have several advantages over centralized treatment systems. In Thailand, however, use of bone char for water treatment has met resistance because of objectionable taste and odours of the water produced and the social resistance to h...

Journal: :Journal of water and health 2006
M E Kaseva

This paper presents findings of a study on optimization and application of the regenerated bone char media for the defluoridation of drinking water in Tanzania where more than 30% of all water sources have fluoride concentrations above the 1.50 mg/I which is recommended by the World Heath Organization (WHO). In this study, regeneration temperature, regeneration duration, contact time, regenerat...

ژورنال: طلوع بهداشت یزد 2014
احرامپوش, محمد حسن, قانعیان, محمد تقی , موسوی , سیده پروین,

Introduction:The textile industry produces a colored effluent with different characteristics that needs to be treated. Adsorption is one of the methods for removing dyes. The aim of this study was to evaluate application of bone char as natural adsorbent for removal of acid orange 7 from synthetic textile wastewater. Methods:In this study, the effect of variations such as contact time, pH, in...

Journal: :Journal of the science of food and agriculture 2015
Marie J Zwetsloot Johannes Lehmann Dawit Solomon

BACKGROUND Pyrolysis of slaughterhouse waste could promote more sustainable phosphorus (P) usage through the development of alternative P fertilizers. This study investigated how pyrolysis temperature (220, 350, 550 and 750 °C), rendering before pyrolysis, and wood or corn biomass additions affect P chemistry in bone char, plant availability, and its potential as P fertilizer. RESULTS Linear ...

زبرجدی, سارا, سلطانیان, علیرضا, عسگری, قربان, فردمال, جواد,

Introduction: In studies of the adsorption of pollutants onto different adsorbents, determining the adsorbent dose of the most important characteristics must be considered. The aim of the study was the determination and modeling of dose-response bone char fluoride removal from aqueous solutions and comparison of the adsorption isotherm models with dose-response models from the perspective of ad...

Journal: :Journal of Hazardous Materials 2021

The removal of inorganic arsenic (As) species from water using bone char pyrolyzed at 900 °C was investigated. Results revealed that the Sips model resulted in best As(III) experimental data fit, while As(V) were represented by Langmuir model. adsorption rate and mechanisms both As investigated kinetic diffusional models, respectively. At low concentrations 0.5 2.5 mg/L, due to intra-particle i...

Journal: :Advances in Environmental Chemistry 2014

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