采用NaF沉淀剂实现了对工业硫酸锰中钙、镁离子的有效净化,探讨了PAM对沉淀物沉降性能的改善作用,并通过Box-Behnken响应面法优化了反应条件。实验结果表明,PAM的添加缩短了CaF2和MgF2的沉降时间,各反应条件对钙、镁去除效果的影响程度依次为:NaF过量系数> pH >温度,其最佳反应条件为:pH=6.3、NaF过量系数2.0、温度75℃,钙去除率和镁去除率的平均值分别为81.64%、94.75%,与模型的预测值基本吻合。
赵瑾, 王文华, 曹军瑞, 寇希元
doaj +2 more sources
【目的】文章旨在系统分析光伏企业废水排入园区废水厂后引发的运行问题及其影响机理,为优化处理工艺提供依据。【方法】以某工业园区废水厂(规模为1万m 3 /d,主要采用“水解酸化+厌氧-缺氧-好氧(AAO)+膜生物反应器(MBR)”组合处理工艺)为案例,分阶段监测调试期与稳定运行期的水质水量参数,包括化学需氧量(COD)、总氮(TN)、氨氮、总磷(TP)、盐分、钙离子(Ca 2+ )、硅离子(Si 4+ )、氟离子(F - )及悬浮物质(SS)等指标,并结合膜污染电镜扫描 ...
QIANG Jinfeng +4 more
doaj +1 more source
Value of nuclide scintigraphy in the diagnosis and prognosis of cardiac amyloidosis. [PDF]
Mo Q, Deng Z, Xiao Y, Liu C, Zhao M.
europepmc +1 more source
层状双金属氢氧化物(LDHs)因其优异的阴离子交换能力和良好的再生性能在含氟废水治理中展现出良好应用潜力。采用尿素水热合成法制备氯化铁插层钙铝层状双金属氢氧化物(Ca-Al-Fe-LDHs)吸附废水中的氟离子。通过单因素实验,确定最佳制备条件和吸附条件。最佳制备条件为:Ca/Fe/Al物质的量比为9:2:1,水热合成时间12 h,pH为10。最佳吸附条件为:投加量4 g/L、反应时间3 h。吸附过程符合拟二级动力学模型,吸附等温线与Langermuir模型拟合良好。氟离子的去除机理主要是离子交换 ...
刘鸿岐 +5 more
doaj
[The consensus of the diagnosis of monoclonal gammopathies of clinical significance in China (2022)]. [PDF]
Chinese Society of Hematology at Chinese Medical Association +2 more
europepmc +1 more source
Research progress on renal calculus associate with inborn error of metabolism. [PDF]
Song Y, Zhao C, Li D.
europepmc +1 more source
Network pharmacology analysis and experimental validation of Anemarrhenae Rhizoma in treating Alzheimer's disease. [PDF]
Li D, Hu Y, Liu X, Yu G.
europepmc +1 more source
[Study on the establishment, assessment, and drug sensitivity testing for intrahepatic cholangiocarcinoma organoid models based on the suspension culture method]. [PDF]
Su YH +8 more
europepmc +1 more source
[<i>LCN2</i> knockout protects endothelial barrier function in mice with sepsis-induced acute lung injury by regulating the NF-κB signaling pathway]. [PDF]
Yu M +6 more
europepmc +1 more source
Occluding dentin tubules with monetite paste in vitro. [PDF]
Tang H, Zhu YW, Zhu JX, Li QL.
europepmc +1 more source

