نتایج جستجو برای: heavy metal removal

تعداد نتایج: 438868  

2012
Osama Abdalla Mohamad Xiuli Hao Pin Xie Shaimaa Hatab Yanbing Lin Gehong Wei

The mining industry generates huge amounts of wastewater, containing toxic heavy metals. Treatment to remove heavy metals is necessary and recent work has been focused on finding more environmentally friendly materials for removing heavy metals from wastewater. Biosorption can be an effective process for heavy metal removal from aqueous solutions. Our objectives were to investigate the removal ...

2013
S. K. AND SAROJ

The aim of this study was to investigate the removal of Escherichia coli and heavy metals (Pb, Cd 2+ and Zn ) from wastewater using silver-modified clinoptilolite under different experimental conditions through the combined disinfection of pathogenic microorganisms by the silver ions and sorption of heavy metals on clinoptilolite. Batch experiments were conducted to look at the effects of initi...

Journal: :محیط زیست طبیعی 0
حسن پرویزی مساعد دانشگاه آزاد اسلامی، واحد همدان، باشگاه پژوهشگران جوان، همدان سهیل سبحان اردکانی گروه محیط زیست، دانشگاه آزاد اسلامی، واحد همدان امیرحسین حمیدیان گروه محیط زیست، دانشکده منابع طبیعی، دانشگاه تهران، کرج

rice husk is as an organic solid waste material that has high adsorbing capacity in removal of heavy metal ions from wastewater, and can be very effective in treating industrial aqueous solutions that are important sources of water and soil pollution. in this study, the removal of zn(ii) and cr(vi) ions from aqueous solutions using rice husk was investigated. the investigated parameters include...

Abdolkazem Neisi, Abdolrahim Yusefzadeh, Afshin Takdastan, Ahmad Reza Yari, Esmail Charkhloo, Mahsa Moradi, Mohammad Javad Mohammadi, Vahid Babaee Darzi, Yusef Omidi Khaniabadi,

Background & Aims of the Study: One of the most important pollutants in drinking water, air and soils is heavy metals. It is very harmful for humans and other live organisms. The purpose of this study was the usage of a co-composting process for removal of heavy metals from municipal solid waste and sewage sludge. Materials and Methods: This experimental study was a condu...

ژورنال: Medical Laboratory Journal 2014
Chaichi, MJ, Khosravi, F, Mohadjerani, M, Mohseni, M,

Abstract Background and Objectives: Contamination of environment to lead and copper is rising due to human activities. One of the best methods to remove heavy metals from the environment is bacterial remediation. This study aimed to isolate bacteria and investigate the mechanism of lead and copper bioremediation. Material and Methods: Heavy metal resistant bacteria were isolated from contaminat...

ژورنال: علوم آب و خاک 2015
اوستان, شاهین , حیدری, صابر , ریحانی‌تبار, عادل , نیشابوری, محمد‌رضا ,

Consequences of heavy metal accumulation in soils are of great concern. One way of decontaminating heavy metals from soils is using chelating agents, particularly EDTA. In this research, three contaminated soils (with total concentration of these metals of 10.5, 55.8 and 80.6 mmol kg-1) were collected from the surface layer of the lands surrounding a zinc-lead smelting plant in Zanjan province....

2014
Sneh Lata S. R. Samadder

The importance of removal of heavy metals from drinking water has received significant attention of researchers and decision makers across the globe. Bio-adsorbents have emerged as potential remediation materials for the removal of heavy metals and metalloids from both groundwater and surface water. Plants, algae, fungi are some of the biomass derived adsorbents which are capable of removing he...

Journal: :international journal of environmental research 0

spirulina platensis, a cyanobacterium of economic important was studied for the tolerance to cadmium. the bioassay studies showed the ec50 value to be 1.53 mg/g. the cyanobacterium was very sensitive to low metal concentration and the productivity was also reduced. the chlorophyll pigments reduced with decreasing the algal biomass. the algal survival rate showed a marked reduction in their surv...

Journal: :international journal of health studies 0
shima mohammadkhani 1 1. health technology center, shahroud university of medical sciences, shahroud, iran. jaber yeganeh 2 2. school of nursing and health, uremia university of medical sciences, uremia, iran. saeid nazemi 3* 3. dept. of environmental health engineering, school of public health, shahroud university of medical sciences, shahroud, iran.

background: today, through various industrial processes, toxic heavy metals are released into aquatic environments that are harmful to the ecosystem. in the present investigation, removal of such contaminants from industrial wastewater is necessary. the purpose was made to extend an ecofriendly technology by using a bio carbon generated from sunflower waste biomass. methods: the impact of initi...

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