Removal of Tetracycline from Wastewater Using Circulating Fluidized Bed

Abstract

In this study, the circulating fluidized bed was used to remove the Tetracycline from wastewater utilizing a pistachio shell coated with ZnO nanoparticles. Several parameters including, Tetracycline solution flowrate, initial static bed height, Tetracycline initial concentration and airflow rate were systematically examined to show their effect on the breakthrough curve and the required time to reach the adsorption capacity and thus draw the fully saturated curve of the adsorbent. Results showed that using ZnO nanoparticles will increase the adsorbent surface area and pores and as a result the adsorption increased, also the required time for adsorbent saturation increased and thus the removal efficiency may be achieved at minimum antibiotic flowrate, maximum bed height, higher antibiotic concentration, and higher airflow rate. Also, a minimum fluidization velocity correlation was developed in this study. This correlation was found to be a function of liquid velocity, bed height, particle size, and particle density. The results showed that circulating fluidized bed has a better performance and last more than two hours before the bed biomass exhausted in comparison with traditional fluidized bed.

Microbial Fluidized Bed Reactor Removing Pharmaceutical Contaminants from Wastewater – Review

“…Transport depends on the concentration difference between the solute and the adsorbent in solution. On the other hand, if the initial concentration is high, the bed will saturate faster and the slope of the breakthrough curve will be steeper (Burghate and Ingole, 2013;Kareem and Mohammed, 2020).…”

Novel use of Synthetic Titanium Dioxide Extracted from Zizyphus Spina-Christi for Removing CIP from Synthetic Wastewater

“…To study the effectiveness of using Z-TiO 2 as compared with commercial TiO 2 for removing CIP residual from aqueous solution, 25 mg L-1 was taken from each catalyst while keeping other parameters constant (CIP = 25 mg L − 1 , pH = 5, 75 mg/L of H 2 O 2 , and the experiment was conducted for 120 min) and there result were shown in Fig. (4). The result shows that removal e ciency was TiO 2 and Z-TiO 2 (89.76 and 85.21) % respectively.…”

“…These pollutants cannot be completely removed during wastewater treatment, and thus some are discharged from wastewater treatment plants to receiving environments almost unchanged. Meanwhile, if they do not biodegrade or cannot be removed in treatment plants, they can reach drinking water [2][3][4] Traditional wastewater treatments are not intended to handle pollutants such as pharmaceuticals, they can only extract drugs with a low removal rate, allowing untreated components to mix with surface waters [5]. To provide usable quality water, new methods are proposed to ensure that the contaminant is mineralized and transformed into non-toxic products rather than eliminated.…”

Multivariate Statistical Analysis of the Spatial Variability of Hydrochemical Evolution during Riverbank Infiltration

“…The growth of populations near rivers and the development of industry and agriculture make rivers vulnerable to industrial wastewater, intensive agricultural pesticide runoff and urban sewage [1,2]. RBF is a technique in which water is purified by passing it through riverbanks.…”