Abstract Hydrochar a carbon-rich material resulting from hydrothermal carbonization of biomass, has received substantial attention because its potential application in various areas such as carbon sequestration, bioenergy production and environmental amelioration. A series hydrochars were prepared by metal chloride-assisted rice husk characterized elemental analysis, zeta potential, X-ray diffr...

In this study, waste olive cake (OC) was utilized as the raw material for the production of biosorbents by chemical treatment and its adsorption capacity for zinc ion was evaluated. Tests were conducted with the total biomass (T) and with the fraction > 2.00 mm (P), in order to determinate the influence of this fractionation step on subsequent treatments. Two chemical agents were used: sulfuric...

With rapid industrial development, problems related to pollution are becoming severe Water pollution is one of the most serious problems because inorganic and organic wastes are discharged to the aquatic environment either in water soluble or insoluble forms. Heavy metal ions have lethal effects on all forms of life and these enter the food chain through the disposal of wastes in water channels...

Heavy metal pollution in the aquatic system has become a serious threat today. The chemical processes that exist are not economical for treating a large volume of water bodies of dilute metal concentration. In this endeavour, microbial biomass has emerged as an option for developing economic and ecofriendly wastewater treatment processes. Nonliving and dead microbial biomass may passively seque...

Adsorption studies of Fuchsin Basic (FB) on six different agricultural wastes / natural materials were carried out by batch experiments. The parameters studied include initial dye concentration, adsorbent dose, pH, agitation time, agitation speed, particle size of adsorbent and temperature. The best fitting isotherm models were found to be Langmuir and Temkin. The monolayer (maximum) adsorption...

The high-resolution potentiometric titration was used as a physico-chemical method to study the acid properties of selected biosorbent materials in order to quantify the functional acidic groups for sorption and to determine their affinities by considering their partial or total ionization equilibrium reactions. The Gran's method and the Henderson-Hasselbach's equation were employed in establis...

Purpose: This study aimed to analyze the effects of removal of hexavalent Chromium using carbonated almond green hulls. In the present study, derived carbon fromalmond green hulls of zonal district of Iran were used to remove hexavalent Chromium from Synthetic wastewater. Materials and Methods: The effects of pH (2-10), Adsorbent dose (2-24 g/L), Cr (VI) concentration (10-100 mg/L), Contact tim...

In this study, the adsorption and desorption kinetics of lanthanum (La) on micro algal cells was investigated. The internal transcribed spacer (ITS) and 18S ribosomal RNA gene (rRNA) were used for molecular identification of the species. The algal species were found to have 95-98% identities to Desmodesmus multivariabilis, Scenedesmus acuminutus, Chloroidium saccharophilum and Stichococcus baci...