نتایج جستجو برای: tclp
تعداد نتایج: 180 فیلتر نتایج به سال:
End-of-life cathode ray tubes (CRTs) have become global problem in the pool of waste electrical and electronics owing to higher concentration lead (Pb) this needs urgent management an ecofriendly manner. In study, spent CRT glass was incorporated clay make burnt bricks for construction. Samples were collected from technicians’ workshops, manually dismantled, pulverized, milled sieved into three...
This study's focus was to develop a potential pathway for recycling of the paper mill sludge compost (PMSC) in brick making. Composting reduces (PMS) moisture content considerably and shredding becomes easier. The addition PMSC leads an increase porosities bricks makes them lighter, besides delivering energy firing process from burning organics. Lighter construction materials help minimize outl...
The repurposing of gold (Au) mine tailings from artisanal and small-scale mining (ASGM) operations via alkali activation technology is a promising strategy for waste reduction in developing countries. Direct tailings, however, challenging because these materials contain relatively low aluminum (Al)-bearing minerals. In this study, palm oil fuel ash (POFA) was elucidated as high Al-bearing deriv...
فرایند تثبیت و جامدسازی یکی از روش های دفع پسماندهای خطرناک می باشد. در این پژوهش از اختلاط آب مقطر، سیمان پرتلند تیپ دو، آهک و منیزیم اکسید برای تثبیت و جامد سازی لجن صنایع آبکاری استفاده شد. در این مطالعه مقاومت فشاری و میزان غلظت کروم و روی در شیرابه TCLP به عنوان پاسخ در نظر گرفته شد. طراحی 30 آزمایش براساس طرح مرکب مرکزی برای محاسبه معادله مدل در روش سطح پاسخ و آموزش شبکه عصبی مصنوعی...
Filter cake is one of the main waste products of zinc processing industries and it contains a high amount of toxic heavy metals. In this research in order to reduce heavy metals leachability in filter cake, Portland cement, natural pozzolan, diammonium phosphate (DAP), triple superphosphate (TSP), lime, zinc oxide and ground granulated blast furnace slag (GGBFS) have been used. This research’s ...
تـثـبـیـت و جـامدسازی (S/S) رسـوبـات حــاوی فـلــزات سـنـگـین، بقایای صنعتی و خاکهای آلوده، تکنولوژی جذابی برای کاهش سمیت آنها است و دفع آنها را ســاده میسازد. کارایی تکنولوژی تثبیت و جامدسازی را میتوان با استفاده از نانو ذرات رسی تغییر داد. فرایند تثبیت و جامدسازی با استفاده از ذرات نانومونتموریلونیت میتواند بهطور مؤثری برای مقابله با انتقال فلزات سنگین به کار گرفته شود. با وجود پژوهش...
Hazardous household wastes comprise a significant proportion of municipal solid waste (MSW), and therefore serve as the source of many toxic or carcinogenic organic chemicals that are released in the environment through landfill gases or leachates. In the present study, we demonstrate the utility of the steam classification process in removing hazardous semivolatile organic compounds (SVOCs) an...
Filter cake is one of the main waste products of zinc processing industries and it contains a high amount of toxic heavy metals. In this research in order to reduce heavy metals leachability in filter cake, Portland cement, natural pozzolan, diammonium phosphate (DAP), triple superphosphate (TSP), lime, zinc oxide and ground granulated blast furnace slag (GGBFS) have been used. This research’s ...
Background and objective: Compost is beneficial for conditioning the structure and nutrient content of soil. Toxic metals are the most important contaminants that can enter the food chain through the compost products and affect human health. The aim of this study was to assess the arsenic, mercury, cadmium, and lead levels in six brands of vermicompost produced from the organic solid wastes in ...
Applicability of the bioscorodite method (use of the thermo-acidophilic Fe(II)-oxidizing archaeon Acidianus brierleyi for arsenic (As) oxidation and immobilization at 70 ◦C) was tested for synthetic copper refinery wastewaters of a wide range of dilute initial As(III) concentrations ([As(III)]ini = 3.3–20 mM) with varying initial [Fe(II)]/[As(III)] molar ratios ([Fe(II)]ini/[As(III)]ini = 0.8–6...
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