Two semi-passive treatment systems for iron (Fe) and arsenic (As) removal in AMD were installed monitored in-situ more than a year. These technologies designed to treat the As-enriched (? 1 g/L Fe(II) 100 mg/L As(III)) of ancient Carnoulès mine. The was based on biological Fe As oxidation by indigenous bacteria, subsequent immobilization ferric hydroxysulfates. Forced aeration wood/pozzolana or...

Through environmental policies that provide a gradual discussion about the destination of tailings produced in most diverse industrial sectors, sewage sludge is emphasized by problematic arising from amount toxic compounds compose it, compromising its disposal. Aiming to fulfill sustainable role through creation mechanisms favor ecological coexistence between environment and human beings, it po...

the benefits of using mineral admixtures as a partial replacement of portland cement (pc) are well established in the literature. economic and environmental advantages by reducing co2 emissions are well known. this paper examines the influence of intergrinding and separate grinding on the amount of energy consumption, blaine fineness and particle size distribution (psd) of blended cements, name...

Potential valorisation of fly ash powders is examined for scalable production in-situ cast structural member with ambient cured alkali-activated geopolymer concrete. The critical issue strength variation has been investigated by correlating the physical and chemical properties original affecting water demand in mix proportion. A Class-F having fineness 680 m2/kg Blaine’s specific surface area (...

The effectiveness of six different reburial systems was investigated by means a monitoring station installed on part approximately 110 square meters mosaic, defined as basilica thermarum in the Southern Baths ancient city Perge. scope study covers consisting only soil filling tessellatum layer; sand geotextile laid surface; and gravel, respectively pozzolana surface, finally, 5 cm sand, geotext...

Spreader Stoker thermal power plants are initially used to burn bagasse during the sugarcane harvest, but also coal when season is over. The drawback that, compared standard pulverized fly ashes, ashes resulting from this process contain many more unburned particles. Therefore, Coal Fly Ash (SSCFA) sent landfill despite its potential for valorisation in construction. main objective of work was ...

in this paper, a model based on gmdh type neural network, is used to predict gas price in the spot market while using oil spot market price, gas spot market price, gas future market price, oil future market price and average temperature of the weather. the results suggest that gmdh neural network model, according to the root mean squared error (rmse) and direction statistics (dstat) statistics ...