The objective of this study was to investigate the effects of manufacturing conditions on the adsorption capacity of heavy metal ions by Makino bamboo charcoal. Results show that the specific surface area and iodine number of bamboo charcoal activated at 900 degrees C were larger than those of bamboo charcoal activated at 800 degrees C. The specific surface area of bamboo charcoal activated at ...

Biological desulfurization processes of landfill gas yield an enormous amount biologically produced S (BPS) as a byproduct. Capability BPS to remove Cd2+ from aqueous solutions was tested and its removal efficiency compared that granular activated carbon (GAC). Kinetics by two-stage process with initial rapid adsorption showing 45% removed within 5 min, followed slower adsorption. Cadmium onto ...

Cadmium is one of the dangerous heavy metals contained in industrial wastewater whose presence needs to be addressed. Adsorption method that can used reduce levels metal ions wastewater. Langsat peel activated carbon as an adsorbent adsorb cadmium because it easy obtain and its use still minimal community. The langsat was made into with HNO3 activator a ion absorber Cd2+ using column method. ob...

in this study chitosan hydrogel beads with porosity ~ 0.86 and diameter ~ 20.07 mm were prepared from 85 % deacetylated chitosan for removal of cd2+ ions from aqueous solutions.  chitosan powder was dissolved into dilute acetic acid as solvent and formed into spherical beads using a phase inversion technique. the effect of temperature, initial concentration of cd2+ ions, and the period of agita...

In this work, the mechanisms of cadmium (Cd2+) adsorption on residual biomasses from husks yam (Dioscorea rotundata), cassava (Manihor esculenta), cocoa (Theobroma cacao), corn (Zea mays) and oil palm bagasse (Elaeis guineensis) were studied in order to evaluate effect temperature, adsorbent dose particle size a batch system. Isotherms kinetics determined adjusted different models. The biomater...

Rice straw and corn were selected as raw materials to prepare biocharby anoxic carbonization the biochar was loaded on surface with FeCl3, MnCl2 Fe(NO3)3 & KMnO4, respectively, then two types of six modified prepared. FT-IR, SEM, XRD used characterize analyze physical chemical properties biochar. The adsorption kinetics isothermal tests Cd2+ ions in aqueous solution carried out. results sho...

Extracellular polymeric substances (EPSs) were extracted by high-speed centrifugation at 20,000 G for 30 min from an activated sludge treating municipal wastewater. Each gram of sludge, as measured in volatile suspended solids (VSS), contained 7.3 mg of EPS, including 6.5 mg of protein (EPSp) and 0.8 mg of carbohydrate (EPSc). The EPSp had a mean MW of 2.0 x 105; about 18% of EPSp had MW over 5...

Uji karakteristik pektin kulit buah sukun (Artocarpus altilis (Park.) Fosberg) dan uji kemampuan adsorpsi logam berat pada limbah laboratorium stifera Semarang. Tujuan penelitian ini yaitu menentukan kondisi optimum dalam menyerap ion Pb2+ Cd2+ terhadap parameter variasi berat, lama waktu kontak, pH ukuran partikel serta persentase penurunan kadar cair farmasi. Metode isolasi dilakukan dengan m...

The potential of nitric acid modified kola nut pod adsorbent (MKNP) in removing selected heavy metals such as lead (Pb2+), cobalt (Co2+), and cadmium (Cd2+) ions from aqueous solution was investigated. FTIR spectra before after the adsorption indicates presence functional groups hydroxyl carboxylic which are responsible for its surface chemistry. percentage removal largely depends on pH, contac...