Wastewater decolorization after treatment

The efficiency of UV/O3 process (pH 8) for decolorization and mineralization of RB137 was investigated at higher dye loading of model wastewater, 80 mgL" (Figure 13). It can be seen that complete bleaching was achieved after 20 minutes of treatment, while final extent of partial mineralization after a one-hour treatment is 64.4% TOC removal. Trend of the curve that connects points of TOC removal extents measured during the treatment is almost linear, i.e. very different than that... 

This section describes batchwise fixed-bed adsorbers in which the adsorbent is replaced with fresh material, or removed and regenerated after it is exhausted, then reinstalled. Commercial examples include columns used for chemical feedstock purification, decolorizing solutions, and wastewater treatment. The goal is generally to employ material balance and rate equations to predict adsorber performance, possibly to analyze experimental data (e.g., breakthrough curves and temperature histories), to diagnose problems, or to assess properties or conditions. Unfortunately, various conditions often result in nearly identical behavior, so diagnosing causes may be difficult. 

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