نتایج جستجو برای: 1 mm and twelve various zn concentrations 0 to 450 mg l
تعداد نتایج: 18889084 فیلتر نتایج به سال:
background: the presence of heavy metals in aquatic and terrestrial ecosystems causes harmful effects to living organisms in the environment. this research aimed to determine the potential of activated pumice stone (aps) as a sorbent for the removal of cd, cu, and zn from wastewater. methods: this research was conducted during 2013 on a laboratory scale. the study was performed using batch expe...
The present investigation has been conducted to assess the status of physico-chemical parameters as well as the concentrations of some selected heavy metals to understand the present scenario of water quality at Perak River basin, Malaysia. The temperature, turbidity, pH, EC and DO values of all the examined samples have been within the range of 25.0 to 30.5 0C, 39.5 to 168.00 NTU, 6.8 to 7.33,...
The present investigation has been conducted to assess the status of physico-chemical parameters as well as the concentrations of some selected heavy metals to understand the present scenario of water quality at Perak River basin, Malaysia. The temperature, turbidity, pH, EC and DO values of all the examined samples have been within the range of 25.0 to 30.5 0C, 39.5 to 168.00 NTU, 6.8 to 7.33,...
Toxic heavy metal pollution of water and soil is a major environmental problem, and most conventional remediation approaches do not provide acceptable solutions. Wetland plants are being used successfully for the phytoremediation of trace elements in natural and constructed wetlands. This study demonstrates the phytoremediation potential of water hyacinth Eichhornia crassipes, for the removal o...
Background and Objective: Acid Black 1 dye due to the presence of benzene ring, toxicity, mutagenicity, carcinogenicity and non-degradability is one of the major dangers for human health and environment especially aquatic life. Hence, the removal of these compounds from polluted water and wastewater has been considered. This study has been investigated the removal of acid black1 azo dye f...
The effect of toxicants on the BOD degradation rate constant was used to quantitatively establish the toxicity of triclosan, phenol, and copper (II) against activated sludge microorganisms. Toxicities were tested over the following ranges of concentrations: 0-450 mg/L for phenol, 0-2 mg/L for triclosan, and 0-35 mg/L for copper sulfate (pentahydrate). According to the EC(50) values, triclosan w...
there is no doubt that human being needs to become integrated with industry and industry needs to be progressed, daily. on the other hand, serious events in industrial units specially in oil industries has been shown that such damages and events are industry related ones. the consequence of such events and damages which resulted in chemical and poisoned explosions and loss of life and property ...
the history of plant’s used for mankind is as old as the start of humankind. initially, people used plants for their nutritional proposes but after the discovery of medicinal properties, this natural ?ora became a useful source of disease cure and health improvement across various human communities. berberis vulgaris is one of the medicinal plants used in iranian traditional medicine. berberis ...
A laboratory experiment was conducted to assess the bioaccumulation of microelements Fe 2+, Cu 2+, Zn 2+ and their effects on the growth and pigment contents of Spirulina platensis in Zarrouk’s media. The mentioned metals concentrations enhanced separately to tenfold of the Zarrouk’s content. The results indicated no differences in the dry weights for the different medias (p>0.05). A rapid incr...
Strawberry is perennial, herbaceous plants belonging to the family of fragaria, with a rich source of vitamins and minerals. The aim of present study was to evaluate the effects of different concentrations of growth regulators including auxin and cytokinin to identify the best hormonal concentration to obtain the highest yield of in vitro produced plantlets from strawberry cv Diamante. Experime...
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