Henry J. Tanudjaja

• Doctor of Philosophy
• Postdoctoral Research Fellow at King Abdullah University of Science and Technology

Reverse osmosis (RO) filtration performance is heavily influenced by the design of the feed spacer. Spacer design impacts hydrodynamic patterns within the system, affecting water production and concentration polarization. Two spacer designs, namely pillar (P) and standard (S), were investigated to improve the performance of a commercially available...

Fouling of ultrafiltration (UF) and microfiltration (MF) membranes by proteins is a major challenge in the bioprocessing and dairy industries, as well as in surface and wastewater treatment applications. This review attempts at presenting a comprehensive state-of-the-art understanding on protein fouling of membranes. Effects of operating conditions...

Membrane fouling by the high protein concentrations used in the biopharmaceutical industry remains poorly understood. In this study, feed concentrations of up to 10,000 ppm of bovine serum albumin (BSA) were investigated with three polymeric membranes, two of which had the same molecular weight cut-off (namely, PES100 and PSF100), and two were of t...

Oily wastewater is the largest liquid waste generated, mainly resulting from oil and gas production. It consists of hazardous materials, salts, toxic chemicals, surfactants and crude oil content. Therefore, it is considered a huge threat for the environment and marine life, and hence needs to be adequately treated before discharge into the sea. Amo...

Separation of liquid-liquid emulsions is a challenging problem that has gained in importance with the development of unconventional oil resources. Large volumes of water contaminated by emulsified oil need to be treated for safe disposal or efficient reuse. Among technologies capable of removing oil dispersed into smaller size droplets (< 15 µm), m...

The large volumes of oily wastewater generated by various industries, such as oil and gas, food and beverage, and metal processing, need to be de-oiled prior to being discharged into the environment. Compared to conventional technologies such as dissolved air flotation (DAF), coagulation or solvent extraction, membrane filtration can treat oily was...

In view of membrane-filtration being a promising means for treating the large volumes of oily wastewater, much efforts have been dedicated to understanding membrane fouling by oil emulsions. However, the understanding on cake fouling, which is the governing form of fouling throughout filtration, by oil emulsions remain poorly understood. To bridge...

Membrane-based filtration is promising for applications in the food industry, for example, for processing dairy products, but membrane fouling restricts the efficiency of the process. The deposition of the main constituents in skim milk of casein, lactose and milk fat globules onto the membrane due to the permeate drag is inevitable, which necessit...

Membrane-based filtration is promising for the treatment of oily wastewater with stable micron-sized oil droplets, but is unfortunately limited by the inevitable membrane fouling phenomenon. To advance the understanding on membrane fouling by oil emulsion, this study made use of the direct observation through the membrane (DOTM) technique to experi...

Membrane-filtration is promising for treating the voluminous oily wastewater, especially when the oil emulsionsare smaller than 20 μm. However, studies on the inevitable membrane fouling phenomenon by oil are ratherscarce. In particular, a question that remained to be addressed was whether the DLVO or XDLVO model providesbetter predictions of the o...

Microfiltration is an attractive means for treating oily wastewater, especially when the size of the oil droplets are micrometer-sized since the conventional techniques become deficient. A systematic study on the critical flux of oil-in-water emulsion, which behaves differently from other colloidal foulants with regards to deformation, coalescence...