Sawdust Derivative for Environmental Application: Chemistry, Functionalization and Removal of textile dye from aqueous solution

Abstract

The adsorption of Violet Remazol 5R (VR 5) on wood sawdust modified with succinic anhydride (SSA) as a function of contact time, pH, and initial dye concentrations was investigated using a batch technique under ambient conditions. The SSA obtained was confirmed by IR spectroscopy, thermogravimetry and 13 C NMR, and degrees of substitution (DS) were calculated. A study on the effect of the pH on the adsorption of VR 5 showed that the optimum pH was 2.0. The interactions were assayed with respect to the pseudofirst-order and pseudo-second-order kinetic models, and were found to follow closely the pseudo-secondorder. The isotherm was adjusted to the Langmuir, the Freundlich and the Temkin sorption models. SSA is a promising material for the removal of dye textile from aqueous solutions, and under conditions studied the removal percentage achieved was 51.7%.

Performance enhancement of thin‐film composite membranes in water desalination process by wood sawdust

“…The open sever pick observed in the range of 1000 to 1200 indicated the C─O bandFIGURE 2 Infrared spectra of membrane samples with various loading of wood sawdust (WSD): (A) WSD and porous substrate layers (PSLs) and (B) thin-film composite (TFC) membranes [Colour figure can be viewed at wileyonlinelibrary.com] 2806 AZIZI NAMAGHI ET AL.stretching of the C─O─H and C─O─C groups in the anhydroglucose ring, hemicelluloses, and lignin. Similar results can be found in other literatures, 19,21,48 which are consistent with our study. In the case of MMMs, no additional broad band is observed at least at low WSD concentration.…”

“…The bands around 2881 to 2928 cm −1 are attributed to the C─H stretching Colour figure can be viewed at wileyonlinelibrary.com] stretching of the C─O─H and C─O─C groups in the anhydroglucose ring, hemicelluloses, and lignin. Similar results can be found in other literatures,19,21,48 which are consistent with our study. In the case of MMMs, no additional broad band is observed at least at low WSD concentration.…”

“…In the last decade, agricultural and forestry by-products such as rice husk and rice husk ash, [14][15][16][17] waste tea, 18 wood sawdust (WSD), [19][20][21][22] and so forth 23 have increasingly generated interest in many emerging applications, especially adsorption process. These materials are used in the formulation of composite materials because of their flexibility, abundant availability in nature, biodegradability, variety, low cost, clean, and also environmental friendliness.…”

“…In this regards, the use of nanoparticles based on materials such as SiO 2 /Zeolite, 10 graphene oxide, 11 multiwalled carbon nanotubes, 12 and Zeolite A 13 have already been explored in PSf polymeric membranes. Therefore, the application of nanoparticles as an additive in preparation of TFC membrane for desalination has opened a new emerging area of research.In the last decade, agricultural and forestry by-products such as rice husk and rice husk ash, 14-17 waste tea, 18 wood sawdust (WSD), [19][20][21][22] and so forth 23 have increasingly generated interest in many emerging applications, especially adsorption process. These materials are used in the formulation of composite materials because of their flexibility, abundant availability in nature, biodegradability, variety, low cost, clean, and also environmental friendliness.…”

Activated biomass of the green microalga Chlamydomonas variabilis as an efficient biosorbent to remove methylene blue dye from aqueous solutions

“…The environmental impacts caused by agricultural and industrial effluents, and release of urban solid waste into surface water and open dumpsters, have worsened in recent years, drawing the concern of all segments of society (Monteiro et al, 2017;Pinto et al, 2016;Bharathi and Ramesh, 2013). Over 10 000 different types of dyes and pigments are used in the textile and printing industries.…”