Color removal from dye wastewaters by adsorption using powdered activated carbon: Mass transfer studies

1995 ◽  
Vol 63 (1) ◽  
pp. 48-54 ◽  
Author(s):  
Ruth Yu-Li Yeh ◽  
Adrian Thomas
Keyword(s):  
Mass Transfer ◽  
Activated Carbon ◽  
Powdered Activated Carbon ◽  
Color Removal ◽  
Carbon Mass ◽  
Mass Transfer Studies

Removal of PAHs from Wastewater Using Powdered Activated Carbon: A Case Study

2021 ◽  
pp. 204-218
Keyword(s):  
Mass Transfer ◽  
Activated Carbon ◽  
Mechanical Strength ◽  
Mass Transfer Rate ◽  
Bacterial Consortium ◽  
Powdered Activated Carbon ◽  
Degradation Rates ◽  
Optimum Proportion ◽  
Transfer Properties

The aim of this study was to develop immobilized microorganism carrier for effectively degradation of petroleum hydrocarbons (PAHs), especially pyrene. Powdered activated carbon (PAC) was used to immobilize the bacterial consortium (Klebsiella pneumoniae and Pseudomonas aeruginosa) with binder CaCl2 and sodium alginate (SA) for improving mass transfer rate of the pyrene pollutants. Mass transfer properties, embedding ratio, and mechanical strength were inspected for the immobilization particles. Mechanical strength of SA beads was more influenced by proportion of SA and CaCl2 than by proportion of PAC. The optimum proportion of SA, CaCl2 and PAC were 2.5%, 2% and 0.5% for immobilization SA beads. The degradation of bacterial consortium (Pa+Kp) had the best degradation rates at 48.2% on 14 days. SA embedding immobilization by adding PAC can obviously enhanced effect of pyrene degradation because of bacterial absorption ability and nutrient permeability being improved.

scholarly journals Nonsteroidal Anti-Inflammatory Drug Solid-State Microencapsulation on Green Activated Carbon - Mass Transfer and Host-Guest Interactions

2019 ◽  
Vol 33 (2) ◽  
pp. 249-269 ◽  
Author(s):  
Zvezdelina Lyubenova Yaneva
Keyword(s):  
Mass Transfer ◽  
Activated Carbon ◽  
Solid Phase ◽  
Drug Carrier ◽  
In Vitro Release ◽  
Inflammatory Drug ◽  
Mass Transfer Mechanism ◽  
Carbon Mass ◽  
Anti Inflammatory

The present study investigated the drug-carrier capacity of green activated carbon derived from fruit stones by steam-gas activation (ACSTA) towards the nonsteroidal anti-inflammatory drug (NSAID) ibuprofen (IBU), and assessed the host-guest interactions and mass transfer mechanism/s of the drug microencapsulation and in vitro release processes. The mass transfer studies outlined that the process of IBU encapsulation on ACSTA microparticles was predominantly controlled by intraparticle solid phase diffusion.

Removal of PAHs from Wastewater Using Powdered Activated Carbon: A Case Study

2021 ◽  
pp. 204-218
Keyword(s):  
Mass Transfer ◽  
Activated Carbon ◽  
Mechanical Strength ◽  
Mass Transfer Rate ◽  
Bacterial Consortium ◽  
Powdered Activated Carbon ◽  
Degradation Rates ◽  
Optimum Proportion ◽  
Transfer Properties

The aim of this study was to develop immobilized microorganism carrier for effectively degradation of petroleum hydrocarbons (PAHs), especially pyrene. Powdered activated carbon (PAC) was used to immobilize the bacterial consortium (Klebsiella pneumoniae and Pseudomonas aeruginosa) with binder CaCl2 and sodium alginate (SA) for improving mass transfer rate of the pyrene pollutants. Mass transfer properties, embedding ratio, and mechanical strength were inspected for the immobilization particles. Mechanical strength of SA beads was more influenced by proportion of SA and CaCl2 than by proportion of PAC. The optimum proportion of SA, CaCl2 and PAC were 2.5%, 2% and 0.5% for immobilization SA beads. The degradation of bacterial consortium (Pa+Kp) had the best degradation rates at 48.2% on 14 days. SA embedding immobilization by adding PAC can obviously enhanced effect of pyrene degradation because of bacterial absorption ability and nutrient permeability being improved.

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