【摘要】 海泡石是一种具有吸附活性的天然硅酸盐黏土矿物,在水污染、土壤污染、大气污染治理中可作为一种高效吸附剂。本文论述了海泡石的吸附机理,介绍了海泡石吸附混合重金属离子、混合有机染料、重金属与有机物共存等混合污染物和CO2、CH2O、NH3、SO2等有毒有害气体的吸附效果,并展望了今后的研究方向:(1)目前的研究多是基于静态吸附试验,且试验所用废水均为实验室配制的模拟废水,今后应进行动态吸附试验,并以实际废水为研究对象;(2)海泡石经过改性后,可在一定程度上提高吸附容量,今后可继续优化改性剂和改性工艺,从而进一步提高吸附容量;(3)结合各类吸附剂之所长,将海泡石与其他有机、无机或生物材料复合,研制出吸附效果更佳的新型复合吸附剂。更多还原

【Abstract】 Sepiolite,a natural silicate clay mineral with adsorption activity,is a kind of adsorbent with high efficiency in water pollution,soil pollution and air pollution control.The adsorption mechanism of sepiolite is reviewed,and the effects of sepiolite adsorption on mixed pollutants,such as mixed heavy metal ions,mixed organic dye,coexistence of heave metal and organic dye,and toxic and/or harmful gases,such as carbon dioxide,formaldehyde,ammonia,sulfur dioxide is introduced.The existing problems of sepiolite used as adsorbent for environmental protection are summarized,and the directions for future research direction are prospected.The current research is mainly based on static adsorption tests,and the wastewater used in experiments is simulated wastewater prepared by the laboratory.Dynamic adsorption tests should be carried out in the future,and the actual wastewater should be taken as the research object.After being modified,the adsorption capacity of sepiolite is improved to a certain extent.In the future,the modifier and modification process should be optimized,thus the adsorption capacity can be improved further.Combining with the advantages of all kinds of adsorbent,sepiolite should be combined with other organic,inorganic or biological materials to develop new composite adsorbents with better adsorption effect.更多还原