sludge pyrolysis Articles

  • Pyrolysis

    Introduction: Pyrolysis is formally defined as chemical decomposition induced in organic materials by heat in the absence of oxygen. In practice, it is not possible to achieve a completely oxygen-free atmosphere; actual pyrolytic systems are operated with less than stoichiometric quantities of oxygen. Because some oxygen will be present in any pyrolytic system, nominal oxidation will occur. If ...

  • closed pyrolysis and fast pyrolysis equipment

    Technokomplex manufactures and sells Pirotex closed pyrolysis equipment and auxiliary equipment that process by-products (pyrolysis carbon, liquid fuel) into commercial fractions. The equipment is becoming more relevant for mechanical rubber goods and plastics utilization field as besides hydrocarbon-containing products utilization mechanical rubber goods, plastics, oil sludge and waste oils ...


    By Technokomplex

  • Characterization of char from slow pyrolysis of sewage sludge

    The effects of final pyrolysis temperature Tend from 300 ºC to 550 ºC, heating rates β of 2 ºC/min, 3 ºC/min and 5 ºC/min, retention time RT from 45 min to 90 min, and the moisture content MC from 0 to 70% on characteristics of the pyrolysis char from sewage sludge were investigated using a tube furnace in this study. The resulting chars were characterized by sorption of nitrogen (surface area ...


    By IWA Publishing

  • Pyrolysis properties of municipal sewage sludge with ZnCl2 activation under the N2 atmosphere

    The municipal sewage sludge with ZnCl2 activation was pyrolysed to obtain useful porous adsorbents. The thermogravimetric analysis and FTIR methods were used to work out the properties of dried sewage sludge with ZnCl2 activation from the Changsha secondary wastewater-treatment plant. The experimental results showed that three stages of weight loss were observed under the heating rates of ...


    By Inderscience Publishers

  • Pyrolysis as a promising solution to tire disposal

    The problem of solid and liquid waste utilization has a great ecological and economical significance for every developed country in the world. Low-temperature pyrolysis is evaluated as one of the promising solution to the growing disposal problem. Recycling old tires by closed pyrolysis method helps to reduce the quantity of emissions and protect natural resources. As a bonus, if you go about it ...


    By Technokomplex

  • Removal of ecologically harmful pyrolysis gas and vapours

    Type     HOFGAS®- IFM4c/1000 Commissioning     August 2002 Site     Waste water treatment plants Situation As a result of new authority requirements, Romag AG set up operation of a plant for the drying and gasification of wastewater sludge. Drying vapours are formed during the sludge drying and pyrolysis gas during gasification. These emissions must be burned in an ecological way, ...


    By Hofstetter BV

  • Removal of hydrogen sulphide on sewage sludge/industrial sludge based carbonaceous adsorbents

    The adsorbents were prepared for sewage sludge, waste oil sludge and metal oil sludge. On the materials obtained dynamic adsorption of H2S was measured. The initial and exhausted adsorbents were characterised using sorption of nitrogen, thermal analysis, and XRF, XRD and surface pH measurements. The adsorbents have high capacity for H2S (10% wt) The high volume of mesopores contributes ...


    By Inderscience Publishers

  • Pollutant monitoring in sludge treatment wetlands

    Phragmites australis for sludge dewatering and stabilization processes have been widely proved. The presence of reeds, indeed, efficiently allows solids dewatering and organic matter stabilization in order to obtain a stabilised product that can be suitable for land application, even if its environmental impact has to be considered. The actual revision of the European Union's Working Document on ...


    By IWA Publishing

  • Ex Situ Thermal Treatment for Soil, Sediment, and Sludge

    The main advantage of ex situ treatments is that they generally require shorter time periods, and there is more certainty about the uniformity of treatment because of the ability to screen, homogenize, and continuously mix the soils. Ex situ processes, however, require excavation of soils leading to increased costs and engineering for equipment, possible permitting, and materials handling worker ...

  • Surface properties and adsorption characteristics to methylene blue and iodine of adsorbents from sludge

    Adsorbent materials created from wastewater sludge have unique surface characteristics and could be effective in adsorption applications. In this research, the sludge-adsorbents were generated by pyrolyzing mixtures of sewage sludge and H2SO4. Scanning electron microscope (SEM), thermal analysis, X-ray diffraction (XRD) and X-ray photoelectron spectroscope (XPS) were used to analyze the ...


    By IWA Publishing

  • Evaluation of the energetic potential of sewage sludge by characterization of its organic composition

    The composition of sewage sludge and, thus, its energetic potential is influenced by wastewater and wastewater treatment processes. Higher or lower heating values (HHV or LHV) are decisive factors for the incineration/gasification/pyrolysis of sewage sludge. The HHV is analyzed with a bomb calorimeter and converted to the LHV. It is also possible to calculate the heating value via chemical ...


    By IWA Publishing

  • Adsorption of methylene blue using modified adsorbents from drinking water treatment sludge

    This study aims to explore the preparation and application of alum sludge (AS) and mud sludge (MS) from a drinking water treatment plant to remove methylene blue (MB) dye from aqueous solution. The sludge (MS and AS) was treated by chemical and physical activation to obtain new adsorbents. The adsorption experiments were carried out under different conditions of initial dye concentration ...


    By IWA Publishing

  • Neptune project deliverable D4.3

    Decision support guideline based on LCA and cost efficiency assesment The environmental sustainability assessments described in this report is based on life cycle assessments (LCA) of selected waste water treatment technology (WWTT) cases included in NEPTUNE. The basic approach in these assessments (avoided against induced impacts) is described in Deliverable 4.1 (Larsen et al. 2007) ...


    By IWA Publishing

  • Neptune Project Deliverable D2.1

    Within WP2 in the Neptune project, promising technologies were developed and further investigated for sustainable wastewater treatment, where wastewater is regarded as a resource rather than as a waste. These technologies comprise microbial fuel cells for energy recuperation, denitrification and production of added value product. For the removal of micropollutants two new technologies were ...


    By IWA Publishing

  • Neptune project deliverable D2.2

    New approaches for a sustainable WWTP design Within WP2 in the Neptune project, promising technologies were developed and further investigated for sustainable wastewater treatment, where wastewater is regarded as a resource rather than a waste. These technologies comprise bioelectrochemical systems for energy recovery, denitrification and production of value-added products. Two ...


    By IWA Publishing

  • Preliminary studies of lignocellulosics and waste fuels for fixed bed gasification

    This study was carried out to understand the decomposition behaviour of a range of biofuel and waste feedstock during gasification in a downdraft gasifier. A laboratory scale large sample thermogravimetric analyser (LSTA) is used which allows the data on burn-out characteristics of different fuel particles to be measured under agitated conditions. The conditions chosen simulate the combustion ...


    By Inderscience Publishers

  • Staged Thermal Treatment Combined With Pyrometallurgical Smelting Producing Energy and Products From Waste

    Incineration of waste is considered as a state-of-the-art technology. However staged gasification in combination with pyrometallurgical smelting is ready for market introduction and offers principal advantages. These are higher efficiency (up to 35% electricity), efficient and cheaper fuel gas cleaning (less emissions), high quality secondary products (synthetic basalt), high input flexibility, ...


  • Emerging Waste Conversion Technologies

    Today, people and companies are more aware and concerned about the environment than ever before. Everyone is looking for ways to reduce waste or convert organic waste into something more useful. The Federal Government has introduced a renewable energy policy and is continuing to fund for new waste conversion technology. It is now important for local governments to portray their cities and towns ...

  • In Situ Solidification/Stabilization

    Introduction Solidification/stabilization (S/S) reduces the mobility of hazardous substances and contaminants in the environment through both physical and chemical means. Unlike other remedial technologies, S/S seeks to trap or immobilize contaminants within their 'host' medium (i.e., the soil, sand, and/or building materials that contain them), instead of removing them through chemical or ...

  • Refuse Derived Fuel, Current Practice and Perspectives

    Untitled Document Summary I OBJECTIVES The objectives of the project were to undertake a survey on the current ...

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