This work is aiming at exploration of agglomeration process leading to the increasing pollution potential of pyrolytic coke particles in effluent of steam crackers before entering the water resources. The submicron particles of pyrolytic coke are formed in steam crackers in diameter range of 0.2–5.0μm and enter the oceans as industrial effluent while the COD, TDS, TSS, odor and turbidity values are in acceptable range. The agglomeration tendency of submicron pyrolytic coke fines was attributed to selective adsorption of self–assembled monolayers (long–chain normal aliphatic alkanes, C₁₄–C₂₄) on the surfaces of pyrolytic coke particles. The monolayer scaffold forms a thermal sensitive adhesive coating for agglomeration of suspended particles. The results of liquid chromatography–mass spectrometry (LC–MS) revealed no polymeric or oligomeric substrates in the monolayer scaffolds since the maximum molecular weight of adsorbed solutes was determined to be below 500 Da. The outcomes showed that the amount of submicron particles of pyrolytic coke in the industrial effluents can be reduced by removing long–chain normal aliphatic alkanes (C₁₄–C₂₄) as the source of self–assembled monolayers. Finally, the mechanism of temperature dependent vertical/horizontal adsorption modes was examined.

这项工作旨在探索导致蒸汽裂解装置流出物中热解焦颗粒在进入水资源之前污染潜力增加的结块过程。热解焦的亚微米颗粒在蒸汽裂解装置中形成，直径范围为 0.2-5.0μm，并作为工业废水进入海洋，而 COD、TDS、TSS、气味和浊度值在可接受的范围内。亚微米热解焦粉的团聚趋势归因于自组装单分子层（长链正脂肪族烷烃，C ₁₄ -C ₂₄) 在热解焦炭颗粒的表面上。单层支架形成用于悬浮颗粒团聚的热敏粘合剂涂层。液相色谱-质谱 (LC-MS) 的结果显示单层支架中没有聚合物或低聚物底物，因为吸附溶质的最大分子量被确定为低于 500 Da。结果表明，通过去除长链正脂肪族烷烃（C ₁₄ -C ₂₄）作为自组装单分子层的来源，可以减少工业废水中热解焦亚微米颗粒的数量。最后，研究了温度依赖性垂直/水平吸附模式的机理。