Leather industry, one of the polluting industries because of generation of huge amount of liquid and solid wastes, also emits obnoxious smell because of degradation of proteinous material of skin and generation of gases such as NH3, H2S and CO2. Solid wastes are raw trimmings, fleshings, chrome shavings, buffing dusts and keratin wastes. Accumulation of these wastes lead to sludge problem and c...

Considering the complexity of hydrological processes, it seems that multivariate methods may enhance the accuracy of time series models and the results obtained from them by taking more influential factors into account. Indeed, the results of multivariate models can improve the results of description, modeling, and prediction of different parameters by involving other influential factors. In th...

Cations leaching from leaf litter of Melia azedarach (Linn.) was studied in laboratory. About 37% initial dry weight lost after 72 hours. Conductivity and total dissolved solid (TDS) the leached water significantly (p<0.05) increased to 475 µS cm-1 227 mg l-1, respectively. pH dropped 5.64 at end experiment. TDS showed significant (p<0.05, r=0.99) positive linear relationships with loss l...

it is necessary to care the quantity and quality of the water resources especially in arid and semi-arid regions. shahrekord plain where it has a 551 km2 total area, groundwater is discharging almost 255 mcm annually and uses for drinking and agriculture. the main objective of this study was classification of groundwater quality and comparison with the drinking water standard limits in shahreko...