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玉米芯在常温下的水解动力学研究 被引量:2
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作者 杨茜 蔡昌凤 吴光跃 《安徽工程大学学报》 CAS 2013年第3期4-7,11,共5页
为解决可渗透反应墙固定化硫酸盐还原菌原位治理酸性矿井水的碳源问题,以玉米芯为材料,通过模拟废水条件下单因素实验,分析温度、质量浓度、pH值、时间等参数对玉米芯水解液中还原糖含量的影响.根据玉米芯水解实验数据建立了玉米芯水解... 为解决可渗透反应墙固定化硫酸盐还原菌原位治理酸性矿井水的碳源问题,以玉米芯为材料,通过模拟废水条件下单因素实验,分析温度、质量浓度、pH值、时间等参数对玉米芯水解液中还原糖含量的影响.根据玉米芯水解实验数据建立了玉米芯水解动力学模型,产糖率CG=k1·(e-k1t-e-k2t)/(k2-k1),mg/g;确定了不同温度下还原糖生成速率以及降解速率常数;玉米芯水解活化能Ea为33 342.213kJ/mol;指前因子为3.068×105.说明玉米芯作为缓释碳源在中低温条件下易水解,为以玉米芯固定SRB方法治理酸性矿山废水提供了理论依据. 展开更多
关键词 可渗透反应墙 酸性矿井水 SRB碳源 玉米芯 还原糖 水解动力学方程
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Integrating 1D and 2D hydrodynamic,sediment transport model for dam-break flow using finite volume method 被引量:3
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作者 ZHANG MingLiang XU YuanYuan +1 位作者 HAO ZiNing QIAO Yang 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2014年第4期774-783,共10页
The purpose of this study is to set up a dynamically linked 1D and 2D hydrodynamic and sediment transport models for dam break flow.The 1D-2D coupling model solves the generalized shallow water equations,the non-equil... The purpose of this study is to set up a dynamically linked 1D and 2D hydrodynamic and sediment transport models for dam break flow.The 1D-2D coupling model solves the generalized shallow water equations,the non-equilibrium sediment transport and bed change equations in a coupled fashion using an explicit finite volume method.It considers interactions among transient flow,strong sediment transport and rapid bed change by including bed change and variable flow density in the flow continuity and momentum equations.An unstructured Quadtree rectangular grid with local refinement is used in the 2D model.The intercell flux is computed by the HLL approximate Riemann solver with shock captured capability for computing the dry-to-wet interface for all models.The effects of pressure and gravity are included in source term in this coupling model which can simplify the computation and eliminate numerical imbalance between source and flux terms.The developed model has been tested against experimental and real-life case of dam-break flow over fix bed and movable bed.The results are compared with analytical solution and measured data with good agreement.The simulation results demonstrate that the coupling model is capable of calculating the flow,erosion and deposition for dam break flows in complicated natural domains. 展开更多
关键词 1D/2D coupling model finite volume method HLL approximate Riemann solver non-equilibrium sediment transport
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