In attempt to decrease NO_X and SO₂ emission from thermochemical utilization, three industrial biowastes (penicillin mycelia waste, sewage sludge and peat waste) contained high nitrogen (N) and sulfur (S) were chosen to investigate the denitrification and desulphurization of hydrothermal modification. The results demonstrated that hydrothermal modification destroyed the structure of N- and S-containing components, thereby altering their existed conformations. Inorganic-N (N-IN) and most of amino-N/polyamide-N (N-A) were enriched by liquid phase in the forms of NH₄⁺-N and soluble organic-N (Org-N), respectively; subsequently, Org-N could further decompose to NH₄⁺-N at higher temperature. Residual N in hydrochars was converted from N-A to heterocyclic-N (pyrrolic-N, pyridinic-N and quaternary-N) via hydrolysis and cyclization. Similarly, over 60% of S was remove form biowastes at 240 °C. In solid phase, part of organic-S was altered to thiophenes-S after modified, while the remainder was transformed to inorganic-S; but the variation of inorganic-S in hydrochars strongly affected by its specific species.

为了减少热化学利用产生的NO _X和SO ₂排放，选择了三种工业生物废料（青霉素菌丝体废料，污水污泥和泥炭废料），其中含有高氮（N）和硫（S），以研究水热改性的反硝化和脱硫作用。 。结果表明，水热改性破坏了含N和S的组分的结构，从而改变了它们的存在构象。液相中分别以NH ₄ ⁺ -N和可溶性有机-N（Org-N）形式富集无机-N（N-IN）和大部分氨基-N /聚酰胺-N（NA）；随后，Org-N可能进一步分解为NH ₄ ⁺-N在较高温度下。碳氢化合物中的残留N通过水解和环化作用从NA转化为杂环N（吡咯烷基N，吡啶基N和季铵基N）。同样，在240°C时，超过60％的S被从生物废物中去除。在固相中，有机-S的一部分在改性后被改变为噻吩-S，其余部分则被转化为无机-S。但是水碳中无机S的变化受其特定种类的强烈影响。