Electric arc furnace baghouse dust (EAFD), a waste by-product of the steelmaking process, contains the elements that are volatilized from the charge during the melting (Cr, Pb, Zn, Cu and Cd). The results of leaching tests show that the concentration of these elements exceeds the regulatory limits. Consequently, EAFD cannot be disposed of in ordinary landfill sites without stabilization of the ...

Arsenic is present at relatively high concentrations in surface water and groundwater as a result of both natural impacts and anthropogenic discharge, which requires proper treatment before use. The present study describes As adsorption on a siderite-hematite filter as a function of activating condition, empty bed contact time, and As species. Hydrogen peroxide activating increased As adsorptio...

In this study, the potential of alkali activated fly ash cements to immobilise metals that are generally not well immobilised in Portland cements was examined. A class F fly ash was activated with a solution of 8M NaOH to form a hardened cementitious paste. Prior to activation, fly ashes were doped with either: i) 5000 mg/kg (0.5%) Hg 2+ as HgCl2, ii) 10000 mg/kg (1.0%) Cs + as CsOH.H2O or iii)...

Clearance of sludge has made a major task in latest periods. In the current study from KPRWTP were investigated concerning physicochemical characteristics & disposal options. Organic content petroleum clay soil was 0.23 ±0.09% and 0.186±0.1%, respectively. Metals average concentration: Chromium: 130.95±27.32 mg/kg Arsenic: 0.899±0.434 lead: 47.83±21.44 Cadmium: 18.33±9.04 Copper: 209Â...

In situ immobilization of heavy metals in sediments has been considered as a low-cost and eco-friendly remediation method. this study, biochar (BC) BC-nanoscale zero-valent iron composite (nZVI/BC) treatments with different doses were conducted to immobilize Cd situ. The performance BC nZVI/BC changing mobility bacterial community sediment was investigated, their efficiencies at various pH valu...

sirri island is one of the most important islands in iran where contains massive amounts of crude oil reservoirs and is a crude oil exporting and storage spot. petroleum sludge wastes produced by the refineries are deposited in outdoor 2-ha open pits. 30 sludge samples from different depot locations were conducted in 3-time intervals and mixed with each other to form one homogenized sample. the...

Municipal solid waste incinerator fly (IFA) ash is prone to accumulate high concentration heavy metals. Due the increasing costs treat remaining at landfill, a lot of research has been done recycle IFA. This studywas focusing on properties IFA and cement as main raw materials in new inventive blended cement. The were also being investigated. Properties examined through several test which includ...

The mining industry generates large quantities of waste as tailings. tailings have an adverse environmental impact. This study explored the utilization and stabilization Barberton gold mine (GMTs) basic oxygen furnace slag (BOFS) to synthesize geopolymers for other applications. geochemical, chemical, geotechnical properties GMT, BOFS, GMT geopolymer, GMT: BOFS geopolymer were also studied. Sod...

Five adsorbents based on fly ash treated with NaOH for the adsorption of cadmium ion from aqueous solutions were investigated. The materials characterized using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and Brunauer-Emmett-Teller (BET) surface area methods. results demonstrated that specific was improved after treatment, by new reached equilibrium in les...