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首页> 外文会议>European Symposium on Environmental Biotechnology(ESEB 2004); 20040425-20040428; Oostende; BE >COD and colour removal of pulp and paper mill effluent by adsorption on formaldehyde treated Keekar bark (Acacia nilotica)
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COD and colour removal of pulp and paper mill effluent by adsorption on formaldehyde treated Keekar bark (Acacia nilotica)

机译：通过吸附在甲醛处理的Keekar树皮（Acacia nilotica）上的纸浆和造纸厂废水的化学需氧量和脱色

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摘要

In the present investigation chemical oxygen demand and color removal of pulp and paper mill effluent, by adsorption on formaldehyde treated activated keekar bark was studied at varying the pollutants concentrations, adsorbents dose, pH, and agitation time in a batch reactor. The activated keekar bark was prepared thermally in size 0.3 mm. The COD reduction was found maximum at alkaline pH (10), where as color removal was observed at a low pH (2) with a adsorbent dose of 20 mg/L. The amount of pollutants adsorbed increased with increase in dose of both adsorbents and their agitation time, higher reduction of COD and color removal was possible provided the low initial concentration. Thus it is proposed that AKB can be potential adsorbents for pollutants removal from the pulp and paper mill effluent and easily available in country side at low cost.
机译：在本研究中，通过在间歇式反应器中改变污染物浓度，吸附剂剂量，pH值和搅拌时间，研究了甲醛吸附在活化的奇异果皮上的化学需氧量和纸浆和造纸厂废水的脱色研究。活化制备的奇可卡树皮的尺寸为0.3毫米。发现在碱性pH（10）时COD减少最大，而在低pH（2）和20 mg / L的吸附剂剂量下观察到了脱色。污染物的吸附量随两种吸附剂剂量的增加及其搅拌时间的增加而增加，如果初始浓度较低，则可以进一步降低COD和脱色。因此，有人提出，AKB可能是从纸浆和造纸厂废水中去除污染物的潜在吸附剂，并且很容易在乡村以低成本获得。

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