Batch and Column Extraction Procedures for Organics in Solid Wastes

ABSTRACT The presence of oestrogen inhibitory activity in oat hay (Avena sativa) and Fahli clover hay (Trifolium alexandrinum var. Fahli) has been established. The antioestrogenic effect was demonstrated by the inhibition of uterine weight increase in rats (Astwood test) in response to oestradiol injected together with the above mentioned plant extracts. The extraction procedures are described in detail and the possible biological implications of antioestrogenic and oestrogenic activity in fodder plants is discussed.

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Using Solid Wastes of Tikrit City to Produce Electric Energy

Modern Environmental Science and Engineering ◽

10.15341/mese(2333-2581)/01.01.2015/006 ◽

2015 ◽

Vol 1 (1) ◽

pp. 39-48

Author(s):

Muzher Mahdi Ibrahem ◽

Khalid Ahmed Salih

Keyword(s):

Electric Energy ◽

Solid Wastes

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Characteristics of Domestic Solid Wastes In The Judiciary of TuzKhurmatu, Iraq

10.23918/iec2017.15 ◽

2017 ◽

Author(s):

Shno Mustafa Ali ◽

Younis Mustafa Ali ◽

Mariwan Ridha Faris

Keyword(s):

Solid Wastes

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CLEAN UTILIZATION OF MUNICIPAL SOLID WASTES AND ALTERNATIVE FUELS DERIVED FROM IT

Environmental Problems ◽

10.23939/ep2020.04.202 ◽

2020 ◽

Vol 5 (4) ◽

pp. 202-209

Author(s):

Alexander Topal ◽

◽

Iryna Holenko ◽

Luidmyla Haponych ◽

◽

...

Keyword(s):

Thermal Treatment ◽

Municipal Solid Waste ◽

Solid Waste ◽

Alternative Fuels ◽

Solid Wastes ◽

Municipal Solid Wastes ◽

Local Conditions ◽

Ecological Requirements ◽

Clean Technologies

For the municipal solid waste (MSW) to be used in a proper way, it is necessary to implement clean technologies capable of thermal treatment of MSW and RDF in order to produce heat and electricity while meeting current ecological requirements. Nowadays, a number of technologies for MSW/RDF thermal treating are being used worldwide. Among them, the most proven technologies, applicable for industrial introduction, have been considered while analyzing their advantages/ disadvantages accounting for local conditions of Ukraine.

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High Power Testing of Optical Connectors

ISTFA 2002: Conference Proceedings from the 28th International Symposium for Testing and Failure Analysis ◽

10.31399/asm.cp.istfa2002p0439 ◽

2002 ◽

Author(s):

Paola Furcas ◽

Rosanna Pastorelli ◽

Giulia Salmini ◽

Massimo Vanzi

Keyword(s):

High Power ◽

Optical Power ◽

Environmental Issues ◽

Optical Elements ◽

Extraction Procedures ◽

Equipment Operation ◽

Burn Out ◽

Power Testing

Abstract High optical power is considered as the source of failures in passive optical elements. Optical connectors, in particular, have been studied because of the unavoidable exposure of their optical interfaces to environmental issues during insertion and extraction. Cleaning and insertion/extraction procedures are investigated. Evidence for burn-out, depending on the different procedures, calls for new suitable rules for handling during equipment operation and testing.

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New Systems for the Digestion of Solid Wastes

Water Science & Technology ◽

10.2166/wst.1992.0164 ◽

1992 ◽

Vol 25 (7) ◽

pp. 319-326 ◽

Cited By ~ 3

Author(s):

A. Wellinger ◽

U. Baserga ◽

K. Egger

Keyword(s):

Dry Matter ◽

Gas Production ◽

Matter Content ◽

Solid Wastes ◽

Dry Matter Content ◽

Feeding System ◽

Shear Forces ◽

Tank Reactor ◽

Strong Shear ◽

First Results

Two new systems for the digestion of solid wastes at thermophilic temperatures were developped and are currently being investigated at our research institute. The first system (ANCOM) was designed to process straw-rich cattle manure with a natural dry matter content of 18% to 22%. First results demonstrated a good specific gas production of 1.2 m3 biogas per m3 digester volume and day (54% methane) corresponding to a gas yield of 400 l per kg VS. A second digester system was developed to treat fruit, garden and vegetable (FGV-) waste. Because FGV-waste tends to float, a stirred tank reactor was designed in cooperation with an engineering firm. The reactor includes a distinguished new stirring system taking up strong shear forces and a hydraulic feeding system which guarantees that even during recirculation of the material, the hygenized digested substrate leaving the digester is not brought in contact with the fresh incoming material. First results measured at an HRT of 40 days demonstrated a specific gas production of 2.7 m3 per m3 fermenter and day.

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Conditioning of oily sludges with municipal solid wastes incinerator fly ash

Water Science & Technology ◽

10.2166/wst.1997.0318 ◽

1997 ◽

Vol 35 (8) ◽

pp. 231-238 ◽

Cited By ~ 7

Author(s):

Tay Joo Hwa ◽

S. Jeyaseelan

Keyword(s):

Heavy Metals ◽

Fly Ash ◽

Specific Resistance ◽

Sewage Treatment ◽

Sewage Treatment Plant ◽

Treatment Plant ◽

Solid Wastes ◽

Municipal Solid Wastes ◽

Capillary Suction ◽

Optimum Dosage

Conditioning of sludges improves dewatering characteristics and reduces the quantity of sludge to be handled. Anaerobic digested sludge collected from a sewage treatment plant contained 1.8% to 8% oil. The increase of specific resistance and capillary suction time (CST) with increasing oil content observed in these samples indicates the interference of oil in dewatering. It has been found that addition of municipal solid wastes incinerator fly ash decreases the specific resistances and capillary suction times of oily sludges rapidly up to 3% dosage. Beyond 3% fly ash, the decrease is less significant and the solids content in the sludge cake increases. This optimum dosage remains the same for sludges with varying oil contents from 1.8% to 12%. The total suspended solids of filtrate decreases with fly ash dosage but the toxic concentrations of heavy metals increases considerably. However at the optimum dosage of 3%, concentrations of heavy metals are within the limits for discharging into the sewers. The correlations of CST with the dewatering characteristics such as specific resistance, filter yield and corrected filter yield are established. These correlations can be used to obtain a quick prediction on dewaterability.

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Determination of Hg(II) in drinking water by atomic absorption spectrometry - Cold vapour method after concentration by column extraction chromatography

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19841134 ◽

1984 ◽

Vol 49 (5) ◽

pp. 1134-1139 ◽

Cited By ~ 3

Author(s):

Zdeněk Šmejkal ◽

Jitka Tauferová ◽

Mária Madová ◽

Zlatica Teplá

Keyword(s):

Drinking Water ◽

Atomic Absorption Spectrometry ◽

Atomic Absorption ◽

Extraction Chromatography ◽

Absorption Spectrometry ◽

Average Yield ◽

Water Mains ◽

Cold Vapour ◽

Column Extraction

The method describes concentration of mercury in samples of drinking water from water mains with Hg concentration above 1.0 . 10-7 g l-1 (5.0 . 10-10mol l-1) by means of extraction chromatography on a column packed with a carrier Synachrom E-5 wetted with saturated solution of bis(diethyldithiocarbamate)copper(II) complex in 1 : 1 mixture 1,2-dichlorobenzene + cyclohexane. After elution with 3.0 mol l-1 HCl the mercury concentration in the eluate is determined by atomic absorption spectrometry - cold vapour method. Average yield of the mercury separation from the model solutions was 95.8%.

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