当有机物被臭氧或过氧化氢预氧化时，活性氧化铝（AA）对天然有机物的吸附得到改善。在实验室中，使用0.1%（或更高）的NaOH溶液（即大于8 x 10（-4）mol NaOH/g AA）有效再生氧化铝。废再生剂可多次重复使用，以减少工艺废物的数量。在颗粒活性炭（GAC）之前使用AA，再加上AA的原位再生，使GAC对有机微污染物-2,4二氯酚的处理能力提高了80%。据推测，由于二氯苯酚没有被AA吸附，GAC上对吸附位点的竞争减少了。AA吸附器与GAC吸附器并联的中试表明，GAC比AA具有更高的容量，能够吸附更大比例的天然有机物，而AA不吸附半挥发性有机物（可通过气相色谱分析）- 在地表水中，预分区提高了AA和GAC的去除率。包括38个参考文献、图表和表格。

Adsorption of natural organic matter on activated alumina (AA) improved when the organic matter was preoxidized with either ozone or hydrogen peroxide. The alumina was effectively regenerated in the laboratory with 0.1 percent (or greater) NaOH solutions, i.e. more than 8 x 10(-4) mol NaOH/g AA. The spent regenerant could be reused several times to reduce the quantity of process waste. The use of AA before granular activated carbon (GAC), combined with in situ regeneration of the AA, resulted in an 80 percent higher capacity of GAC for an organic micropollutant - 2,4 dichlorophenol. Presumably there was reduced competition for adsorption sites on the GAC because the dichlorophenol was not adsorbed by the AA. Pilot tests of AA adsorbers in parallel with GAC adsorbers showed that GAC had a higher capacity and could adsorb a larger percentage of natural organics than AA, that AA did not adsorb the semivolatile organics (analyzable by gas chromatography-mass spectroscopy) in a surface water, and that preozonation improved removal of AA and GAC. Includes 38 references, figures, tables.