نتایج جستجو برای: adsorption and wastewater

تعداد نتایج: 16846834  

2014
Ci Fang Tao Zhang Ping Li Rong-feng Jiang Ying-cai Wang

The recycling of lost phosphorus (P) is important in sustainable development. In line with this objective, biochar adsorption is a promising method of P recovery. Therefore, our study investigates the efficiency and selectivity of magnesium modified corn biochar (Mg/biochar) in relation to P adsorption. It also examines the available P derived from postsorption Mg/biochar. Mg/biochar is rich in...

Recently, use of naturally-occurring low-cost and harmless material for removal of trace contaminants from colored wastewater has attracted extensive attention. In this study, silkworm pupa has been used as a basic dye adsorbent. Adsorption capacity and isotherms have been assessed. Results show that adsorption isotherms can be expressed well by Langmuir equation. The effects of parameters such...

2012
Lance E. Beecher Sarah A. White

Treating endocrine disrupting compounds (EDC’s) in domestic wastewater has become a major concern for the safety of human health and the environment. Human derived EDC’s, such as 17βestradiol are present in domestic wastewater effluent at levels high enough to jeopardize normal endocrine functions of aquatic organisms leading to decreased fecundity and feminization. In wastewater treatment faci...

2007
Hassan A. Arafat

In this work, different treatment methods for wastewater from textile washing operations in the Palestinian territories were studied. The goal of the treatment process was to enable the textile industry to reuse the wastewater in textile washing through simple, efficient, and cost-effective methodologies. Actual textile wastewater samples from local textile factories were used and were found to...

2010
C. Hu Tian Zhang Y. H. Huang Mohamed F. Dahab D. Kendrick R. Surampalli By C. Hu T. C. Zhang M. F. Dahab

The build-up of phosphorus (P) in soil is a major factor limiting the operating life of a wastewater land treatment system. In this study, effects of long-term wastewater application on changes in chemical properties, P profiles, and P adsorption capacity were evaluated in soils of the Muskegon wastewater land treatment plant that has been treating wastewater for > 30 years. Results indicate th...

Journal: :تحقیقات نظام سلامت 0
محسن سعدانی دانشجوی دکتری، مرکز تحقیقات محیط زیست، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران، مربی، دانشکده بهداشت، دانشگاه علوم پزشکی شهید صدوقی، یزد، ایران سیده پروین موسوی دانشجوی کارشناسی ارشد مهندسی بهداشت محیط، دانشکده پردیس بین الملل، دانشگاه علوم پزشکی وخدمات بهداشتی درمانی شهید صدوقی یزد، یزد، ایران محمد حسن احرامپوش استاد گروه مهندسی بهداشت محیط، دانشکده بهداشت،دانشگاه علوم پزشکی و خدمات بهداشتی درمانی شهید صدوقی یزد، یزد، ایران طاهره جاسمی زاد دانشجوی کارشناسی ارشد مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی و خدمات بهداشتی درمانی شهید صدوقی یزد، یزد، ایران ساره رحیمی دانشگاه آزاد اسلامی، واحد ارسنجان، باشگاه پژوهشگران جوان و نخبگان، ارسنجان، ایران

background: colors make many problems and these are major sources of environmental pollution. therefore, this wastewater should be treated before discharge to environment to reduce the environmental threats. adsorption is one of the usual processes for color removal from wastewater. nanotube s are new adsorbents with extend application for adsorption of different compounds. aim of this study wa...

2012
U. E. CHAUDHARI

Treatment of dyes from wastewater is obligatory in order to avoid water pollution. Batch adsoprtion studies were carried out to evaluate the potentiality of ba-gases. Various parameters such as initial dye concentration, pH as well as temperature of the system were studied. The adsorption was found to fallow first order kinetics and intraparticle difussion is the date controlling step. The adso...

2012
D K Singh Bhavana Srivastava

Rice husk carbon (RHC) has been prepared from rice husk impregnated with 50% H3P04 and carbonised at 300°C. Its adsorption capacity has been tested for the decolourization of wastewater containing safranine and methylene blue. The effect of system variables such as concentration, temperature, pH, contact time, adsorbent dosage and particle size are investigated. Removal of dye has been found to...

ژورنال: طلوع بهداشت یزد 2014
ابراهیمی, اصغر, احرام پوش, محمد حسن, زارعی, سلمان, سلمانی, محمد حسین, صفدری, مهدی, عسکری شاهی, محسن,

Introduction: Cadmium is a heavy metal with high toxicity and is best known as a carcinogen element. For protecting human health and environment it is necessary to remove excess Cadmium from industrial wastewater before discharging it to surface and ground water. In this study the efficiency of Zinc Oxides Nanoparticles in Cadmium removal from aqueous solution was evaluated. Methods: This is a...

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