Removal of basic dye (methylene blue) from wastewaters utilizing beer brewery waste.
In the work, the beer brewery waste has been shown to be a low-cost adsorbent for the removal of basic dye from the aqueous solution as compared to its precursor (i.e., diatomite) based on its physical and chemical characterizations including surface area, pore volume, scanning electron microscopy (SEM), and non-mineral elemental analyses. The pore properties of this waste were significantly larger than those of its raw material, reflecting that the trapped organic matrices contained in the waste probably provided additional adsorption sites and/or adsorption area. The results of preliminary adsorption kinetics showed that the diatomite waste could be directly used as a potential adsorbent for removal of methylene blue on the basis of its adsorption-biosorption mechanisms. The adsorption parameters thus obtained from the pseudo-second-order model were in accordance with their pore properties. From the results of adsorption isotherm at 298 K and the applicability examinations in treating industrial wastewater containing basic dye, it was further found that the adsorption capacities of diatomite waste were superior to those of diatomite, which were also in good agreement with their corresponding physical properties. From the results mentioned above, it is feasible to utilize the food-processing waste for removing dye from the industrial dying wastewater.
Tsai
Wen-Tien
WT
Graduate Institute of Bioresources, National Pingtung University of Science and Technology, Pingtung 912, Taiwan. wttsai@mail.npust.edu.tw
Hsu
Hsin-Chieh
HC
Su
Ting-Yi
TY
Lin
Keng-Yu
KY
Lin
Chien-Ming
CM
D000327:Adsorption; D001515:Beer; D004396:Coloring Agents / Q000737:chemistry*; D007692:Diatomaceous Earth / Q000737:chemistry*; D019649:Food Industry; D007220:Industrial Waste; D007700:Kinetics; D008751:Methylene Blue / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods*
D004396:Coloring Agents; D007220:Industrial Waste; D014874:Water Pollutants, Chemical; D007692:Diatomaceous Earth; C033787:diatomite; D008751:Methylene Blue