Speciation of copper in the incineration waste heat boiler (HB) and the down stream electrostatic precipitator (EP) fly ashes during the flue gas cooling down (1123-->473 K) has been studied by X-ray absorption near edge structural (XANES) spectroscopy in the present work. Copper species such as Cu(OH)(2) (59-67%), CuCl(2) (5-12%), CuO (24-26%), and a small amount of CuS (3-4%) in fly ashes wer...

Municipal solid waste incineration fly ash is generated in a significant amount; it is classified as hazardous waste in Taiwan. In order to reduce the volume of treated fly ash, a sintering technology can be considered. However, a traditional sintering consumes too much energy because of the limit of heat transfer. Hence, a microwave process which can provide quick, uniform, and selective heati...

This work proposes a scheme for completely treating heavy metal laboratory waste liquid. Ten common heavy metals and various anions were dopted to synthesize the simulated laboratory waste liquid. Experimental results demonstrated that although conventional ferrite process (FP) ould not be used to treat the simulated waste liquid completely, the enhanced FP, i.e., the extended reaction ferrite ...

Eddie Schwalb2 and Llu s Vila3 Abstract. We aim at developing a logic-based representation language which supports an explicit representation of time and temporal constraints such as \the task t takes from 3 to 4 hours", \the resource r is available from 8:00 to 11:00 and from 13:00 to 14:00" and \task ti cannot overlap task tj". In this paper we discuss the issues to address and we propose TCL...

Bricks manufactured from dried sludge collected from an industrial wastewater treatment plant were investigated. Results of tests indicated that the sludge proportion and the firing temperature were the two key factors determining the brick quality. Increasing the sludge content results in a decrease of brick shrinkage, water absorption, and compressive strength. Results also showed that the br...

The problem of spent fluid catalytic cracking (SFCC) catalyst resource utilization, draws more and attention to system analysis. SFCC was leached in an oxalic solution for comprehensive utilization. results showed that a D50 ≤ 17.34 μm, the 240 min at 95 °C presence 2 mol/L acid solution, extent leaching V, Ni, Fe, Al 73.4%, 32.4%, 48.2%, 36.8%, respectively. Studies on occurrence state main io...

Application of Pistacia atlantica Leaves Powder as Natural Material To Remove Nitrate and Phosphate Ions From Domestic Wastewater by Characterization, Bio-removal, Phytotoxicity StudiesObaida Alhajali1* , Adnan Ali-Nizam1 Rasha Almostafa2 1Damascus University, Department Plant Biology, Damascus, Syria.2International University for Science Technology, General Analytical Chemistry, Syria. Abstrac...

The study of heavy metal interactions with soils under specific climatic circumstances might lead to a better understanding migration and provide further information for local pollution control. In this work, we collected soil samples from the world's largest light rare earth mining district, Bayan Obo mine assessed content in at various depths. extraction effectiveness Diethylenetriaminepentaa...

Municipal solid waste incineration fly ash (MSWI FA) consists predominantly of compounds comprising elements such as calcium, aluminum, silicon, sodium, and others. Additionally, it encompasses a complex mixture heavy metals, chlorides, sulfates, organic pollutants, other constituents. The effective economically viable treatment MSWI FA poses formidable challenge for resource cycling at the cur...

The objective of the present study was to investigate the reduction of mobility, availability and toxicity found in soil contaminated with lead (Pb) and cadmium (Cd) from Santo Amaro Municipality, Bahia, Brazil using two combined methods, commonly tested separately according to the literature: metal mobilization with phosphates and phytoextraction. The strategy applied was the treatment with tw...