The production of titanium dioxide via the sulfuric acid process generates large amounts acidic wastewater. Investigating possibility reusing this wastewater after deep treatment can reduce pollutant discharge and conserve water resources. In a pilot study, dual-membrane method ultrafiltration (UF) reverse osmosis (RO) was employed to perform treatments sulfuric-acid–titanium-dioxide findings s...

A fast and reliable analytical technique was evaluated and validated for determination of N-nitrosodimethylamine (NDMA) formation and rejection by reverse osmosis (RO) membranes in potable water reuse applications. The analytical instrument used in this study is high-performance liquid chromatography (HPLC), photochemical reaction (PR) and chemiluminescence (CL) - namely HPLC-PR-CL. Results rep...

The performance of a bench-scale integrated swine wastewater treatment system was evaluated on the basis of energy recovery, fertilizer production, and water reclamation. The system consisted of one anaerobic sequencing batch reactor (ASBR), one or two aerobic sequencing batch reactors (SBR1 and SBR2), one sludge settling tank, one sand filter, and one reverse osmosis (RO) unit. The system was ...

DCMD presents an opportunity to achieve desalination using low-grade waste heat and highly saline feed waters, where it may be economically competitive with RO, besides providing a very high quality product that could be used for boiler feed water and without the corrosion problems associated with metal based evaporators. Combined with high packing density polymeric heat exchangers, DCMD may al...

To recover gold, this work used a novel direct contact membrane distillation (DCMD) reactor with a hybrid electrolytic process. Analytical results demonstrate that permeate flux increased as feed -2 -1 temperature and feed flow rate increased. Permeate flux increased from 2.8 to 17.6 kg m h when -2 -1 temperature increased from 30 to 70 °C, and increased from 9.2 to 19.9 kg m h when the feed fl...

This study demonstrates the co-hydrodeoxygenation of partially upgraded bio-oil (PUB) obtained from hydrothermal liquefaction pinewood, with rapeseed oil (RO) to produce bio-derived drop-in fuel. Enhanced miscibility PUB in RO showed high potential HTL for co-processing different refinery streams existing refineries. Co-processing experiments were conducted a continuous unit under processing co...

The submerged membrane bioreactor (SMBR) is a promising technology for wastewater treatment and water reclamation. This paper provides an overview of wastewater treatment in a submerged membrane bioreactor process with a special focus on municipal wastewater systems. SMBRs predict more than 95% organic removal with relative short hydraulic retention times (HRTs) of 1-8 h and NH3 removal of more...