Free-surface flows through a staggered cylinder array were investigated in an open-channel flume. The cylinders simulated rigid emergent vegetation. Specifically, we studied four flow cases with two-factor design comprising rate (7 and 13 l s−1) bed-surface state (hydraulically rough smooth). We have primarily assessed the effects of bed roughness shallowness on time-averaged structure transver...

Gas-liquid-solid fluidized bed technique has emerged recently as one of the most promising one for three phase operations involved in chemical, biochemical, petrochemical, pharmaceutical processing industries. Out of the fundamental characteristics of a three-phase fluidized bed, the gas hold up and liquid hold up behaviours have been studied extensively. Considering the various researchers’ fi...

[1] The exchange of water between a stream and its hyporheic zone (defined as the sediment beneath and immediately adjacent to a stream) underpins many ecological and hydrological functions in turbulent streams. Hyporheic exchange can be parameterized in terms of an effective diffusion coefficient Deff and considerable effort has gone into developing process-based models and empirical correlati...

Arsenic (As(V)), a highly toxic metalloid, is known to contaminate wastewater and groundwater difficult degrade in nature. However, the development of efficient adsorbents, at low cost for use practical applications, remains challenging. Thus, investigate As(V) adsorption mechanism, novel porous α-Fe2O3/Fe3O4/C composite (PC-Fe/C-B) was prepared, using bamboo side shoots as bio-template, breakt...

The aim of this research was to investigate the long-term hydraulic conductivity changes in sand-bed columns exposed to 2,4,6-trichlorophenol (TCP). Continuous flow laboratory studies were conducted using sand-bed columns (15 cm i.d.; 200 cm length) at 20+/-1 degrees C during 365 d. The influence of (i) initial loads of 2,4,6-TCP (15, 30, 45 and 60 mg kg(-1) of 2,4,6-TCP), and (ii) recirculatin...

Abstract This study focused on the use of a fix-bed column in removal amoxicillin from an aqueous solution by application silver nano-based adsorbents. The nanoparticle and nanocomposite were produced green synthetic approach. Column adsorption was performed at flow rate 5.88 mL/min, bed height (5.0–7.0 cm), concentration 20–40 mg/L. Adsorption data fitted to Thomas, Adams-Bohart, Yoon-Nelson m...

Nanoparticles of iron precipitates produced by a microbial consortium are suitable adsorbent for metal removal from electroplating industry wastewaters. Biogenic were utilized as adsorbents chromate and zinc in batch conditions. Furthermore, the embedded alginate beads fixed-bed columns, their performance was evaluated continuous system varying different operational parameters such flow rate, b...

Abstract This work studied the removal of paracetamol through adsorption process using granular activated carbon. The results indicated that it was possible to obtain 95% under experimental conditions pH 6, 120 min and 5 g L ?1 solid adsorbent. kinetic model best fit data pseudo-first order. isotherm Sips. thermodynamic tests favorable spontaneous confirmed endothermic nature process. In fixed ...

During adolescence the spine undergoes rapid growth and changes in anatomy and biomechanical properties. Fractures of the adolescent spine are relatively uncommon but may give rise to serious problems. This review describes thoracolumbar fractures in adolescents with respect to epidemiology, anatomy, mechanisms of injury, clinical and radiologic assessment, and nonoperative and operative treatm...

This work expands upon previous on a moving bed cryogenic carbon capture (CCC). Cryogenic using fixed packed captures CO2 frost deposited the surface of material; this build-up fouls heat transfer column and requires periodic shut down process to regenerate material collect for further storage. Using continuously removes frosted from preventing excessive eliminating need regeneration step withi...