Coal bottom ash (CBA) disposed to landfills causes environmental issues. Thus, we used CBA in traditional clay ceramics that had the triple advantage of consuming troublesome waste, adsorbing volatile organics and being decorative indoors, replacing up to 40% by weight of clay with CBA and firing from 700 to 1300 °C. Clay and CBA mixtures were cast, cured at room temperature for 24 h and fired at several temperatures. Firing temperature impacted linear shrinkage, water absorption and fracture toughness, more strongly than CBA mixing proportion. Above 1000 °C, fracture toughness and water absorption resistance was enhanced but shrinkage increased. However, adding CBA lessened the contraction. SEM confirmed complete sintering as clay particles fused as a rigid solid above 1000 °C. X-ray diffraction patterns of ceramics containing CBA showed crystobalite and labradorite, in addition to quartz, due to flux materials in CBA. Leachability tests showed that the CBA ceramics were not ‘toxic’ on the USEPA TCLP regulatory list. Adsorption of gaseous toluene, a representative indoor pollutant, followed a Freundlich model: CBA made the adsorption sites more homogeneous, reduced the interaction mechanisms on the surfaces and thus the Freundlich exponent. Increased CBA increased toluene adsorption by 2–7 times.

处置至垃圾填埋场的煤灰（CBA）会引起环境问题。因此，我们在传统的粘土陶瓷中使用了CBA，它具有消耗麻烦的废物，吸收挥发性有机物并在室内进行装饰，用CBA替代多达40％重量的粘土以及在700至1300°C的温度下燃烧的三重优势。浇铸粘土和CBA混合物，在室温下固化24小时，然后在几个温度下焙烧。烧成温度对线性收缩率，吸水率和断裂韧性的影响比与CBA的混合比例更大。高于1000°C，断裂韧性和吸水率提高，但收缩率增加。但是，添加CBA可以减少收缩。SEM证实完全烧结，因为粘土颗粒在高于1000°C的情况下融合为刚性固体。含有CBA的陶瓷的X射线衍射图显示，除了石英以外，由于CBA中的助熔剂材料，还存在方石英和拉长石。渗滤性测试表明，CBA陶瓷在USEPA TCLP监管清单上无“毒害”。气体甲苯（一​​种代表性的室内污染物）的吸附遵循Freundlich模型：CBA使吸附位点更加均匀，减少了表面上的相互作用机理，从而降低了Freundlich指数。CBA的增加使甲苯吸附增加了2-7倍。减少了表面上的相互作用机理，从而降低了Freundlich指数。CBA的增加使甲苯吸附增加了2-7倍。减少了表面上的相互作用机理，从而降低了Freundlich指数。CBA的增加使甲苯吸附增加了2-7倍。