The objective of this work was to study Cr(VI) sorption/desorption on two by-products from the wood industry: pine sawdust and oak wood ash. The retention/release experiments were carried out using standard batch-type trials. In the sorption-phase experiments, pine sawdust showed 23% sorption when a concentration of 100 mg Cr(VI)ŸL-1 was added, whereas sorption on oak wood ash was 17%. In the d...

This research work investigates the efficiency of H3PO4and KOH impregnated jackfruit leaf powder based carbon as adsorbent to remove Ni from wastewater. The removal characteristics of Nickel using both the adsorbents were investigated under various operating variables like contact time, adsorbent dosage, initial metal concentration, solution pH, temperature and stirring speed. The results showe...

the conversion of the cellulose into 5-hmf would experience three steps, cellulose to glycose, glycose to fructose and fructose to 5-hmf. chloride ion can break down the hydrogen bond in cellucose, chromium can catalyze the isomerization of glycose to fructose, and the high temperature is helpful to cyclohydration of fructose to 5-hmf. in this paper, the sawdust has been directly degraded into ...

Calcium alginate beads doped with hydrazine sulphate-treated red mud are investigated as adsorbent for extracting lead ions from water using batch methods of extraction. Different extraction conditions are optimised for maximum lead extraction. Substantial amount of lead is removed, and the adsorption ability is found to be 138.6 mg/g. Surface characterization using FTIR, EDX, and FESEM confirm...

The objective of this research was to seek a cost effective solution to prepare adsorbents for nitrogen oxide from surplus sludge. Leaf litter and powder coal ash were used as cheap and easily available additives. An adsorbent for nitrogen oxide was prepared by pyrolysis of dried sludge mixed with zinc chloride. Under optimum pyrolysis conditions of 375°C for 90 min and a zinc chloride content ...

Batch sorption experiments were carried out using jackfruit seed powder (JSP), for the removal of Methylene Blue (MB) from dyeing synthetic effluent waste water. Effects of process parameters pH, adsorbent mass, adsorbate concentration, contact time and temperature were studied. The adsorption process attains equilibrium within 60 minutes. The amount of MB adsorbed per unit mass of the adsorben...

Effects of sand versus sawdust as a litter bath substrate in furnished cages for laying hens were studied. The study used 112 Hy-Line White (HYW) and 140 Hy-Line Brown (HYB) layers housed in 18 furnished cages with 14 hens in each cage, generating 4 or 5 replicates per combination of genotype and litter substrate. Traits studied were mortality, feather cover, hygiene of hens, pecking wounds, he...

A lignin sample was extracted from Eucalyptus grandis sawdust, by the Klason method, and used as adsorbent for removal of methylene blue (MB) aqueous solutions. By using a set complementary analytical tools, appeared to be constituted oxygenated functional groups aromatic moieties, while showing specific surface area 20 m2 g−1 polydisperse particles. Different experimental conditions with vario...

The raw sawdust of Eucalyptusglobulus Labill was studied as an alternative residual biomaterial for the adsorption lead (II) in wastewater, evaluating effect pH (3, 4, 5, and 6) a batch system. From characterization biomaterial, it found that biomass has low ash content, from scanning electron microscopy (SEM) microphotographs presents porous morphology with diverse texture presence fiber fragm...