Journal article Open Access

Developing surrogate indicators for predicting suppression of halophenols formation potential and abatement of estrogenic activity during ozonation of water and wastewater

Yu Huang; Shi Cheng; Ya-Ping Wu; Ji Wu; Yan Li; Yang Pan; Zong-Li Huo; Ji-Chun Wu; Xian-Chuan Xie; Gregory V. Korshin; Ai-Min Li; Wen-Tao Li


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{
  "publisher": "Zenodo", 
  "DOI": "10.5281/zenodo.3354022", 
  "author": [
    {
      "family": "Yu Huang"
    }, 
    {
      "family": "Shi Cheng"
    }, 
    {
      "family": "Ya-Ping Wu"
    }, 
    {
      "family": "Ji Wu"
    }, 
    {
      "family": "Yan Li"
    }, 
    {
      "family": "Yang Pan"
    }, 
    {
      "family": "Zong-Li Huo"
    }, 
    {
      "family": "Ji-Chun Wu"
    }, 
    {
      "family": "Xian-Chuan Xie"
    }, 
    {
      "family": "Gregory V. Korshin"
    }, 
    {
      "family": "Ai-Min Li"
    }, 
    {
      "family": "Wen-Tao Li"
    }
  ], 
  "issued": {
    "date-parts": [
      [
        2019, 
        9, 
        15
      ]
    ]
  }, 
  "abstract": "<p>This study focused on developing surrogate indicators for predicting oxidation of phenolic groups in dissolved organic matter (DOM), suppression of halophenols&rsquo; formation potential and abatement of estrogenic activity during ozonation of water and wastewater. The evolution of pH-dependent differential absorbance spectra suggests that O<sub>3</sub> preferentially reacts with the DOM phenolic moieties and less so with the aromatic carboxylic groups with increasing O<sub>3</sub>/DOC ratios and changes of UV absorbance and fluorescence. When ozonation used as pretreatment, the formation of halophenols in subsequent chlorination decreased linearly with increasing O<sub>3</sub> doses or changes of UV absorbance until it reached 85% suppression of the halophenols&rsquo; formation from unaltered DOM. The thresholds of decreases of UVA254, UVA280 and humic-like fluorescence corresponding to 85% suppression of halophenols&rsquo; formation were in the range of 25%~30%, 30%~35% and 30%~45%, respectively. Pre-ozonation also showed a moderate suppression of haloacetic acids (HAAs) formation potentials, &le;26.5% for SR_NOM and &le;31.5% for Yangtze River at applied O<sub>3</sub> doses. Measurement of changes of estrogenic activity during ozonation of water and wastewater showed that to attain a &gt;90% abatement of estrogenic activity, the corresponding thresholds of decreases of UVA254, UVA280 and humic-like fluorescence were ~30%, ~40%, and ~70%, respectively. Bromate formation was also suppressed to below 10 &mu;g/L before these thresholds. This study suggests that optimal ozonation conditions and a balance between control of disinfection byproducts (halophenols, HAAs and bromate) and elimination of estrogenic activity can be reached based on online data.</p>", 
  "title": "Developing surrogate indicators for predicting suppression of halophenols formation potential and abatement of estrogenic activity during ozonation of water and wastewater", 
  "type": "article-journal", 
  "id": "3354022"
}
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