نتایج جستجو برای: chromium removal

تعداد نتایج: 163285  

Journal: :علوم و تکنولوژی پلیمر 0
حسین عیسی زاده مجید ریاحی سامانی

0

2015
Prashant Kumar Shrivastava S. K. Gupta

Several low cost biomaterials such as rice husk, sugar cane bagasse, Tulsi Leaf &branches, coconut shell & coir and fly ash were tested for removal of chromium. All the experiments were carried out in batch process. The adsorbent, which had highest chromium (VI) removal, was coconut shell. An influence of chromium concentration, contact time on removal of chromium from effluent was investigated...

ژورنال: طلوع بهداشت یزد 2014
رحمانی, علیرضا, زیوری, مجتبی, سمرقندی, محمد رضا , صید محمدی, عبدالمطلب, عسگری, قربان,

Abstract Introduction: Chromium is an extremely important heavy metal which is used in different industries. It can be found in water resources due to insufficient treatment of industrial wastewater. The goal of this study was to survey the feasibility of application of hexavalent chromium reduction using granular magnesium as reducing agent and to investigate the affects of various operationa...

Journal: :global journal of environmental science and management 0
d. sivakumar department of civil engineering, vel tech high tech dr.rangarajan dr.sakunthala engineering college, avadi, chennai 600062, tamil nadu, india

the isolated fungi species of different kinds from chromium contaminated soil sites located in nagalkeni, chennai were used for reducing chromium(vi) in a tannery industry wastewater of nagalkeni, chennai.  the experiments were conducted to know biosorption potential of isolated fungi species for removing chromium(vi) in a tannery industry wastewater against the different ph, fungi biomass and ...

Journal: :محیط شناسی 0
مجید ریاحی سامانی دانشجوی دکتری مهندسی محیط زیست، دانشکدة محیط زیست و انرژی، دانشگاه آزاد اسلامی واحد علوم و تحقیقات، تهران سید مهدی برقعی استاد دانشکدة مهندسی شیمی و نفت، دانشگاه صنعتی شریف، تهران علی اولاد استادیار شیمی کاربردی، دانشکدة شیمی، دانشگاه تبریز محمد جواد چاییچی استادیار شیمی تجزیه، دانشکدة علوم پایه، دانشگاه مازندران، بابلسر

absorptive characteristics of polyaniline synthesized with two different oxidants including potassium iodate and ammonium persulfate was studied. synthesized polyanilines in powder shape is used as an adsorbent to remove toxic hexavalent chromium from aqueous solutions. experiments were conducted in batch mode with different variables such as agitation time, solution ph and initial concentratio...

ژورنال: طلوع بهداشت یزد 2014
احرام پوش, محمد حسن, جمشیدی, بهزاد, دهواری, محبوبه, سودائی زاده, حمید, عسکری شاهی, محسن, قانعیان, محمد تقی,

Introduction: One of the heavy metals is chromium which is used in trivalent and Hexavalent oxidation state in industries such as, glass, ceramic, tannery, leather especially in electroplating industries. Hexavalent Chromium has proven several health hazards such as a carcinogen. The aim of this study was to investigate the efficiency of Melia azedarach ash in the removal of hexavalent chromium...

ژورنال: طلوع بهداشت یزد 2013
احرامپوش, محمدحسن, امرالهی, محسن , جمشیدی, بهزاد , طباطبایی, معصومه , عسکر شاهی, محسن , قانعیان, محمدتقی ,

  Background: The heavy metals are the most important pollutants their concentration of which in the environment is increasing in connection with cities and industrials development. One of these metals is chromium which, in the trivalent and Hexavalent oxidation state, is used in industries such as electroplating, glass, ceramic, tannery and leather. Hexavalent Chromium has proven several healt...

Journal: :international journal of environmental research 0

the effluents of tannery industries are the major source of chromium contamination in thegroundwater. in most of the sub-urban areas ground water is the major source of drinking water. for humanbeing long term exposure to chromium is detrimental. the main objective of this study is to assess thegroundwater contamination and to adopt appropriate methods and to develop suitable techniques either ...

2012

Absorptive characteristics of polyaniline synthesized in mixture of water and acetonitrile in 50/50 volume ratio was studied. Synthesized polyaniline in powder shape is used as an adsorbent to remove toxic hexavalent chromium from aqueous solutions. Experiments were conducted in batch mode with different variables such as agitation time, solution pH and initial concentration of hexavalent chrom...

2013
N. Gandhi

Heavy metal, chromium (VI) removal by coagulation using natural coagulant material was investigated in this paper. Chromium occurs naturally in the paint manufacturing industry waste water in many steps of the process. The coagulation and flocculation method is used for chromium removal from waste water using fruits of Opuntia Ficus indica, Fruits of Jatropha gossypifolia and peel of Borassus f...

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