Anaerobic digestion for halophyte biomass utilization to remediate agricultural land

以Panicum sp.为原料，用NaCl （158 g-COD/kg-湿生物质，70g-NaCl/kg-湿生物质）制备人工全植物生物质，在35℃的中温条件下进行争议厌氧消化试验，该试验由消化池和固液分离模块组成，以延长生物反应时间。在COD容量加载率为2.0 kg/m3/d、挥发性脂肪酸微量积累的条件下，约50%的进水COD馏分成功转化为甲烷气。基于反应器200多d的动态响应，对已有的工艺模型（ADM1）进行了修正，模拟了反应器内的沼气产量、污泥浓度和出水COD浓度。为了重现这些反应，需要定义一个额外的状态变量（木质素）并区分进水有机物的分解动力学（缓慢而容易）。

An artificial holophyte biomass was prepared using Panicum sp. with NaCl salt (158 g-COD/kg-wet biomass, 70g-NaCl/kg-wet biomass) for the contentious anaerobic digestion test under mesophilic condition at 35 degree Celsius that was composed of a digester and solid liquid separation module to extend the biological reaction time. About 50% of the influent COD fraction was successfully converted to methane gas under volumetric COD loading rate of 2.0 kg/m3/d with trace accumulation of volatile fatty acids. Based on the dynamic response of the reactor for over 200 days,the biogas production, sludge concentration in the reactor and effluent COD concentration were simulated by modifying existing process model (ADM1). In order to reproduce these responses, a definition of an additional state variable (lignin) and differentiation of disintegration kinetics over the influent organics (slowly and readily) were needed.