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利用蒸馏水和10%KCl溶液先后多次反复对铵伊利石质矸石粉状样品进行淋滤实验,通过测试淋滤液中总氮、铵态氮、硝态氮和亚硝态氮的含量,探讨水和KCl溶液对铵伊利石层间NH4+离子的溶出行为。研究发现:①铵伊利石夹矸中存在水可溶性氮,这种可溶性氮可能以硝态氮和铵态氮的形式存在,水对其溶出速度是比较快的,这部分水溶性氮是煤矸石风化过程中对周围环境产生氮污染的潜在因子;②铵伊利石矿物晶层中的固定NH4+离子是可以被K+离子所取代出来的,这个取代过程是持续而缓慢的。
The leaching experiments of ammonium illite gangue powder samples were repeated several times with distilled water and 10% KCl solution. The content of total nitrogen, ammonium nitrogen, nitrate nitrogen and nitrite nitrogen in the leachate was tested to investigate the effect of water And KCl solution on NH4 + ions between ammonium illite layers. The results showed that: (1) There existed water-soluble nitrogen in ammonium illite sequestering waste, which could exist in the form of nitrate nitrogen and ammonium nitrogen. The dissolution rate of water was relatively fast. Part of water-soluble nitrogen was gangue Nitrogen pollution in the surrounding environment weathering process potential factors; ② ammonium illite mineral crystal layer fixed NH4 + ions can be replaced by K + ions, the substitution process is sustained and slow.