Paitip Thiravetyan

TL;DR: Chitosan was able to remove the color from synthetic reactive dye wastewater (SRDW) under acidic and caustic conditions and the mechanism of SRDW adsorption was probably by chemical Adsorption for a wide range of pH's and at high temperatures.

TL;DR: The leachates of heavy metals from metal hydroxide sludge to the environment are very low, which are within the standard limit of industrial effluent and leachable substances.

TL;DR: Desorption studies elucidated that metal hydroxide sludge had a tendency for ion exchange adsorption of sulfonated azo reactive dyes and the treated water was nontoxic at a system pH above 5 or a solution pH above 2.

TL;DR: The removal of Cr(VI) from electroplating wastewater by coir pith was investigated in a fixed-bed column, finding that the Cr(V) complex cannot be desorbed in solution and the bed depth service time model (BDST) fit well with the experimental data.

TL;DR: Investigation of the use of coir pith in the removal of hexavalent chromium from electroplating wastewater by varying the parameters, such as the system pH, contact time, adsorbent dosage, and temperature indicated an endothermic process and the adsorption process was favored at high temperature.