In this study, a novel integrated Hybrid Airlift Membrane Bioreactor (HAMBR) composed of oxic, anoxic, and anaerobic zones was developed to simultaneously remove organic matter and nitrogen from real paper-recycling wastewater. The removal efficiencies of Chemical Oxygen Demand (COD), ammonium, nitrite, nitrate and Total Nitrogen (TN) for permeate and supernatant were in the range of ...

The concept of establishing direct correlations between the operating flux, represented by the conversion, and fouling potential of membrane systems has always been of tremendous interest to membrane technology researchers, plant end-users and membrane manufacturers since the advent of membrane technology’s commercial applications worldwide some forty years ago. Several attempts were made to ef...

An essential characteristic for high performance inherently hydrophobic membranes such as microporous high density polyethylene (HDPE) membranes is to have a hydrophilic surface. In this project, wet chemical functionalization as a facile and effective method was developed to give a hydrophilic property to HDPE membranes using polar functional groups. KClO3, K2Cr2O7 and KMnO4 were selected as o...

The use of ceramic low pressure membranes for drinking water production has been increasing in the past decades. However, fouling during membrane operations is still a challenging topic that requires attention and investigation. During filtration of surface water, a major contribution to fouling is attributed to the presence of dissolved organic carbon(DOC) and its fractions which comprise biop...

Nanofiltration membranes play an important role in the desalination of brackish and seawater as well as membrane mediated waste water reclamation and other industrial separations. Fouling of nanofiltration (NF) membranes is typically caused by inorganic and organic materials present in water that adhere to the surface and pores of the membrane and results in deterioration of performance (reduce...

Polymer membranes have been modified with hyperbranched polymers with the aim to generate a high density of hydrophilic functional groups at the membrane surface. For this purpose hyperbranched polymers containing amino, alcohol, and carboxylic acid end groups were used for membrane modification, respectively. Thus, surface potential and charges were changed significantly to result in attractiv...

Membrane distillation has shown great promises in desalinating various water streams. Significant progresses have been made the past decades owing to development of advanced membrane materials, such as superhydrophobic and omniphobic membranes. However, fouling scaling remains a critical issue for stable operation. This account summarizes contemporary theories formation their limitations explai...

Reverse osmosis (RO) has been widely applied in various water and wastewater treatment processes as a promising membrane technology. However, RO membrane fouling is a global issue, which limits it operating flux, decreases water production, increases power consumption and requires periodical membranes Cleaning-in-Place (CIP) procedure. This may result in low effectiveness, high cost and adds en...

Fouling is a major obstacle and challenge in membrane-based separation processes. Caused by the sophisticated interactions between foulant membrane surface, fouling strongly depends on surface chemistry morphology. Current studies field have been largely focused polymer membranes. Herein, we report molecular simulation study for alumina graphene surfaces during water treatment. For two foulants...