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An automatic pH–ORP (oxidation–reduction potential) titration device was developed and applied to dynamically control the wastewater chlorination and dechlorination doses in this study. In the pH–ORP titration and back-titration process, the monitoring peaks and valleys on the pH and ORP profiles co

Separation efficiency of ceramic NF membranes manufactured by Tami Industries (Nyons, France) is investigated for the separation of aqueous solutions containing strong inorganic electrolytes. The membrane used is multi-layer structured with a mixed titania and zirconia selective layer (1000 Da MWCO)

Permeation experiments of aqueous solutions of diprotic amino acids (L-glutamine and glycine) were carried out with numerous commercial polymeric nanofiltration (NF) and tight ultrafiltration (UF) membranes. The aim of this study was to determine the permeate flux and the amino acid rejection as a f

This work discusses the applicability of the DSPM with dielectric exclusion (DSPM-DE) to describe nitrate rejection of a high rejection nanofiltration membrane (NF90 from Dow-Filmtec). In particular, the limitations of the application of the model to relatively high feed concentration and different

Microwave and conventional methods have been used to extract pectin from orange peels, with different extraction periods, different solvent pHs and different types of solvent systems. For microwave extraction, the greatest total amount of pectin yield was found to be 5.27% on a dry basis for 15 min

This paper reports the removal of a basic dye (rhodamine-B) by the activated carbon prepared from Parthenium biomass by sulphuric acid treatment method (SWC). The effectiveness of the prepared adsorbent has been studied as a function of agitation time, adsorbent dosage, initial dye concentration and

Boron levels in groundwaters of Nicosia have been determined, compared to previous concentration data and correlated to the concentration of other chemical species contained in the groundwaters under investigation. According to data evaluation boron levels measured at different time do not differ st

The natural zeolite from Evros prefecture contains Ca-rich clinoptilolite (89 wt.%) and in total 92 wt.% microporous minerals (zeolite + mica + clays). Quartz and feldspars constitute the non-microporous minerals (8 wt.%). Acidic water (pH 5.5) from the Kokkinolakkas Stream and basic water (pH 9.5)

As a biomass material, cotton was investigated for feasibility to be used as a cost-effective biosorbent for boron removal as the post-treatment in a desalination plant. Based on the batch tests, cotton demonstrated a good capacity of adsorption at a pH about 7. This capacity was found to increase w

This study attempted to identify fouling-causing material during membrane filtration of surface water. For this purpose, two different coagulation conditions were designed: the optimum removal of turbidity-causing particles (Case I) and the optimum removal of organics (Case II). It was hypothesized