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首页> 外文期刊>Environmental Science: Water Research & Technology >Enhanced removal of organic pollutants from super heavy oil wastewater using specially modified lignite activated coke
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Enhanced removal of organic pollutants from super heavy oil wastewater using specially modified lignite activated coke

机译：使用专门改性的褐煤活化可焦化，增强超重油废水中的有机污染物的去除

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摘要

Lignite activated coke (LAC) has been modified in situ by adsorbing the biodegradation effluent of super heavy oil wastewater (SHOW) to extract organic pollutants from raw SHOW before biodegradation is investigated. Results showed that, in comparison with LAC, modified lignite activated coke (MLAC) exhibited a higher COD removal amount and adsorption capacity with the increase of dosage. The modification process also contributed to a dramatic COD decrease in the final effluent of SHOW from 128.9 mg L-1 to below 50 mg L-1. Particularly, characterization methods, GC-MS, FTIR, XPS and Boehm titration, were performed to investigate the relationship between the modification and the treatment performance. Results indicated that some basic substances were extracted from the biodegradation effluent by LAC during the modification process. Thus the alkali-nitrogen base abundant MLAC could remove larger acidic fractions from the raw SHOW during the adsorption process, leading to a higher adsorption capacity for MLAC. Furthermore, this clean and low cost in situ modification method also provides more reliable disposal effects for SHOW.
机译：通过吸附超重油废水（显示）的生物降解流出物原位改性褐煤活化的焦炭（LAC），以在研究生物降解前从原始展示中提取有机污染物。结果表明，与LAC相比，改性褐煤活化焦炭（MLAC）表现出较高的COD去除量和吸附能力随着剂量的增加。改性过程也有助于在128.9mg L-1至低于50mg L-1以下显示最终流出物中的戏剧性鳕鱼降低。特别是，进行表征方法，GC-MS，FTIR，XPS和Boehm滴定，以研究改性和治疗性能之间的关系。结果表明，在改性过程中，LAM从生物降解流出物中提取了一些基本物质。因此，在吸附过程中，碱 - 氮基础富含碱性MLAC可以去除原始展示中的较大的酸性级分，导致MLAC的吸附能力较高。此外，这种清洁和低成本的原位修改方法还提供了更可靠的处置效果。

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    Tong Kun; Ji Guodong; Nie Fan; Zhang Mingdong; Ren Wen; Xie Shuixiang;

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    State Key Lab Petr Pollut Control Beijing 102206 Peoples R China|CNPC Res Inst Safety & Environm Technol Beijing 102206 Peoples R China;

    Peking Univ Dept Environm Engn Beijing 100871 Peoples R China;

    State Key Lab Petr Pollut Control Beijing 102206 Peoples R China|CNPC Res Inst Safety & Environm Technol Beijing 102206 Peoples R China;

    State Key Lab Petr Pollut Control Beijing 102206 Peoples R China|CNPC Res Inst Safety & Environm Technol Beijing 102206 Peoples R China;

    State Key Lab Petr Pollut Control Beijing 102206 Peoples R China|CNPC Res Inst Safety & Environm Technol Beijing 102206 Peoples R China;

    State Key Lab Petr Pollut Control Beijing 102206 Peoples R China|CNPC Res Inst Safety & Environm Technol Beijing 102206 Peoples R China;

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