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Hesan Elfaki,Alaa Hawari,Catherine Mulligan 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.24 No.-
The potential of using a new filter aid, namely, talc to enhance the removal of particles in a multi-media filter was investigated. In the case of the nano-scale particles the running time was enhanced by 300 min at a talc concentration of 67.5 mg/l. In the case of the micro-scale particles the running time was enhanced from 20 min to 40, 100, and 300 min at a talc concentration of 22.5 mg/l, 45 mg/l, and 67.5 mg/ l, respectively. Coagulation was due to hydrophobic and chemical interactions between talc and the different suspensions
Behzad Heibati,Susana Rodriguez-Couto,Abdeltif Amrane,Mohd. Rafatullah,Alaa Hawari,Mohammad A. Al-Ghouti 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.5
The potential of using pumice and walnut wood activated carbon as low-cost adsorbents for the removal of the diazo dye Reactive Black 5 (RB5) from aqueous solutions was investigated. The Langmuir isotherm fit to the data specified the presence of two different natures of adsorption sites with different binding energies on the AC-W surface. Kinetic modelling showed that the adsorption behaviour and mechanism of RB5 for both adsorbents is believed to happen via surface adsorption followed by diffusion into the pores of the AC-W and pumice. The main adsorption mechanisms are hydrogen bonding, electrostatic bonding and n–π interactions.
Majeda Khraisheh,김종규,Luiza Campos,Ala’a H. Al-Muhtaseb,Alaa Al-Hawari,Mohammad Al Ghouti,Gavin M. Walker 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.3
Photocatlytic removal of three pharmaceutical and personal care products pollutants using novel TiO2–Coconut Shell Powder (TCNSP) composite was investigated. The photocatalytic degradation rate of PPCPsgenerally increased with increasing light intensity and dissolved oxygen concentration. The degradationrate decreased with increasing initial concentration of PPCPs. The PPCPs concentration decreasedsubstantially under irradiation of UVC when used in conjunction with the TCNSP composite. A number ofcomposite/radiation types and intensities were tested. The concentration rate decrease trend was as:UVC/TCNSP > UVA/TCNSP > UVC > UVA. Under the UVC/TCNP combination, 99% removal was achievedcompared to 30% for TiO2.