期刊文献+
共找到10,346篇文章
< 1 2 250 >
每页显示 20 50 100
Integration of network pharmacology and bone marrow mesenchymal stem cells experimental research to reveal the molecular mechanisms for Hai Honghua medicinal liquor against osteoporosis
1
作者 Die Qian Chi Xu +3 位作者 Cheng-Xun He Mei-Yan Li Juan Guo Hong Zhang 《Integrative Medicine Discovery》 2024年第3期1-11,共11页
Background:Hai Honghua medicinal liquor(HHML)formula has been used in clinical practice for a long time,mainly for the treatment of freshly closed fractures,to promote osteogenesis,to increase bone mass,and thus to pr... Background:Hai Honghua medicinal liquor(HHML)formula has been used in clinical practice for a long time,mainly for the treatment of freshly closed fractures,to promote osteogenesis,to increase bone mass,and thus to promote fracture healing.However,the underlying mechanisms of HHML in the treatment of osteoporosis(OP)are still unclear.Methods:Firstly,Traditional Chinese Medicines Systems Pharmacology Database and Analysis Platform and The Encyclopedia of Traditional Chinese Medicine were used to screen the targets of the active compounds of HHML.At the same time,OP targets were identified through GeneCards,Online Mendelian Inheritance in Man,DisGeNET,Therapeutic Target Database,Comparative Toxicogenomics Database and Human Phenotype Ontology databases.Next,protein-protein interaction and pathway networks were constructed for compound-disease common targets,and core targets and compounds were screened for molecular docking.Furthermore,rat bone marrow mesenchymal stem cells were extracted as model cells,and the osteogenic effects of HHML were verified via in vitro experiments.Results:Total of 343 common targets of HHML-OP and the top 10 target proteins in the protein-protein interaction network are TP53,AKT1,STAT3,HSP90AA1,ESR1,TNF,IL6,MAPK1,MAPK3 and MAPK8.Enrichment analysis yielded that the key molecular pathway was the PI3K/Akt signaling pathway.Molecular docking analysis showed that baicalein,erysodienone and naringenin docked with the target proteins AKT1,STAT3 and TP53,respectively,with low binding energy and high affinity.In addition,In vitro experiments demonstrated that HHML promoted the proliferation of bone marrow mesenchymal stem cells;compared with the control group,HHML-treated cells showed enhanced alkaline phosphatase staining,promoted the expression of OCN,RUNX2,BSP,and COL1 mRNAs as well as the expression of PI3K and AKT phosphorylated proteins.Secondly,the expression of target proteins revealed that HHML promoted the phosphorylation of STAT3 protein and inhibited the expression of P53.Conclusions:Our study investigated that HHML treatment with OP promotes bone formation possibly through activation of the PI3K/Akt signaling pathway and may involve STAT3 and TP53 target interactions. 展开更多
关键词 Hai Honghua medicinal liquor OSTEOPOROSIS network pharmacology molecular docking PI3K/AKT signal pathway
下载PDF
The mechanistic study on Wa medicine Niang-Mu-Liang medicinal liquor mitigating diabetes mellitus erectile dysfunction in rats by inhibiting ferroptosis
2
作者 Yu-Ming Wang Rui Qian +4 位作者 Xue-Hua Xie Yao Chen Huan-Tian Cui Wei-Bo Wen Jie Zhao 《Integrative Medicine Discovery》 2024年第10期1-5,共5页
Background:This study aims to investigate the therapeutic effect of Wa medicine Niang-Mu-Liang medicinal liquor(NML)on rats with diabetes mellitus erectile dysfunction(DMED)and its impact on the ferroptosis signaling ... Background:This study aims to investigate the therapeutic effect of Wa medicine Niang-Mu-Liang medicinal liquor(NML)on rats with diabetes mellitus erectile dysfunction(DMED)and its impact on the ferroptosis signaling pathway.Methods:Thirty Sprague-Dawley rats were randomly divided into three groups:Control,DMED,and NML.After establishing the DMED model,treatments were administered for 8 weeks.After the administration,apomorphine hydrochloride tests were conducted to measure the mass and organ index of testes and epididymides,sperm concentration and viability in each group.Penile corpus cavernosum tissues were stained with hematoxylin and eosin.Nitric oxide and cyclic guanosine monophosphate levels in the penile corpus cavernosum tissues were determined using biochemical kits and enzyme-linked immunosorbent assay,while the expression of proteins related to the ferroptosis signaling pathway was measured by Western blot.Results:Compared to the DMED group,the DMED rats treated with NML showed significantly increased erection frequency,testicular and epididymal mass and index,sperm count and viability,along with noticeable improvement in the pathological morphology of penile corpus cavernosum.The content of nitric oxide and cyclic guanosine monophosphate,and the expression of ferritin heavy chain,ferritin light chain,and glutathione peroxidase 4 proteins in penile corpus cavernosum tissue were elevated,while the expression of transferrin and STEAP3 proteins was reduced.Conclusion:NML can improve erectile function in DMED rats by inhibiting the ferroptosis signaling pathway. 展开更多
关键词 Niang-Mu-Liang medicinal liquor diabetes mellitus erectile dysfunction nitric oxide/cyclic guanosine monophosphate ferroptosis
下载PDF
Relationship between Al(OH)_3 solubility and particle size in synthetic Bayer liquors 被引量:5
3
作者 李小斌 阎丽 +5 位作者 赵东峰 周秋生 刘桂华 彭志宏 杨帅帅 齐天贵 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2013年第5期1472-1479,共8页
Surface tension of sodium aluminate solution and the contact angle between Al(OH)3 particles and aluminate solution were measured, then the dependence of Al(OH)3 solubility on its particle size was calculated and ... Surface tension of sodium aluminate solution and the contact angle between Al(OH)3 particles and aluminate solution were measured, then the dependence of Al(OH)3 solubility on its particle size was calculated and thus the variation of the critical nucleus sizes was determined based on the Ostwald ripening formula. The results show that the Al(OH)3 solubility in sodium aluminate solution decreases with the increment of particle size, and the critical nucleus sizes increase with the rise of alkali concentration, caustic ratio and precipitation temperature. The results also imply that the presence of small particles in seeded precipitation system is an important factor to limit the depth of precipitation. 展开更多
关键词 Bayer liquor Al(OH)3 interfacial property SOLUBILITY critical nucleus size
下载PDF
固相法合成钴掺杂锰系锂离子筛的吸附性能
4
作者 涂玉鑫 李田玉 +5 位作者 李吉青 陈佳煌 关利聪 王瑞祥 徐志峰 刘志楼 《工程科学学报》 EI 北大核心 2025年第1期44-55,共12页
随着5G/6G通信、新能源汽车、锂电池产业的快速发展,近年来对锂化合物(尤其是Li_(2)CO_(3))的需求急剧增加,许多国家将锂视为战略矿产资源.目前从锂沉淀母液中提取锂受到了极大的关注.锰系离子筛(LMO)是一种具有广泛应用前景的吸附剂,... 随着5G/6G通信、新能源汽车、锂电池产业的快速发展,近年来对锂化合物(尤其是Li_(2)CO_(3))的需求急剧增加,许多国家将锂视为战略矿产资源.目前从锂沉淀母液中提取锂受到了极大的关注.锰系离子筛(LMO)是一种具有广泛应用前景的吸附剂,可实现复杂溶液中锂的高效回收.但LMO在酸洗解吸过程中存在锰溶损严重的难题,会降低吸附性能和循环性能.针对上述问题,本研究提出引入Co^(3+)掺杂降低LMO锰溶解损失的策略,制备了钴掺杂锰系离子筛(LCMO).采用X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X射线光电子能谱(XPS)等方法对不同煅烧温度和焙烧时间下制备的LCMO进行表征分析.表征结果表明,Co掺杂对LMO的尖晶石结构没有影响,并且Co最佳掺杂摩尔分数为5%,此时离子筛前驱体中Mn^(3+)的原子分数从未掺杂的9.67%降低到3.63%,对应的锂吸附容量从39.299 mg·g^(-1)显著增加到41.708 mg·g^(-1),锰溶损也从1.288%显著降低至0.837%,大大地增加了锰系离子筛的实际应用可能性.制备的摩尔分数为5%Co掺杂的离子筛(LCMO-5%)具有良好的循环性能,Li^(+)的吸附能力在5次循环后仍然保持在81%以上.在模拟的锂沉淀母液中,Li/Na和Li/K之间的分离系数分别为74.655和64.547,这证明了LCMO-5%能有效地从高Na^(+)、K^(+)溶液中吸附分离Li^(+).因此,LCMO-5%离子筛具有从锂沉淀母液中提取Li+的应用前景. 展开更多
关键词 锂离子筛 钴掺杂 锰溶损 吸附 含锂溶液
下载PDF
A win-win technique of stabilizing sand dune and purifying paper mill black-liquor 被引量:15
5
作者 WANG Hanjie Penning de Vries FRITS JIN Yongcan 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2009年第4期488-493,共6页
The principle and technique were reported here to produce lignin-based sand stabilizing material (LSSM) using extracted lignin from black liquor of straw paper mills. Field tests using LSSM to stabilize and green sa... The principle and technique were reported here to produce lignin-based sand stabilizing material (LSSM) using extracted lignin from black liquor of straw paper mills. Field tests using LSSM to stabilize and green sand dunes were started in 2002. The field experiment was carded out in August 2005 when the newly formed plant community was 3 years old. The results from the comprehensive field experiment demonstrated that unlike polyvinyl acetate or foamed asphalt commonly used for dune stabilization, LSSM was plant- friendly material and could be used in combination with seeding and planting of desert species. With the help of LSSM, the desert species (i.e., Agriophyllum squarrosum (L.) Moq. and Artemisia desertorum Spreng. etc.) could be used to form community in 2-3 yeas and to stabilize sand dune effectively. The newly formed community was sustainable under an extremely dry climate condition. The organic matter and total nitrogen in the soil increased significantly as the community were formed, while the change in P and K contents in the soil was negligible. 展开更多
关键词 climate change desertification control straw pulping black liquor purification
下载PDF
Treatment of black liquor from the papermaking industry by acidification and reuse 被引量:5
6
作者 YANG Wen bo, MU Huan zhen, HUANG Yan chu (Research Center for Eco Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2003年第5期697-700,共4页
Two different kinds of black liquor from the papermaking industry were treated by acidification and reuse. The experimental parameters and conditions were discussed in detail. The experimental results indicated that t... Two different kinds of black liquor from the papermaking industry were treated by acidification and reuse. The experimental parameters and conditions were discussed in detail. The experimental results indicated that the treatment process mentioned in this article is an effective process for the treatment of black liquor from the papermaking industry. By the treatment, the solid materials in black liquor are transferred into two by products and the other components are reused or evaporated. Thus, no wastewater except some condensation water would be discharged in pulping process and the problem of pollution of black liquor would be effectively solved. 展开更多
关键词 black liquor ACIDIFICATION REUSE LIGNIN water reducing agent
下载PDF
Effect of Maotai liquor on the liver: an experimental study 被引量:6
7
作者 Ming-Liang Cheng, Jun Wu, Wen-Sheng Zhang, Hai-Qin Wang, Cheng-Xiu Li, Neng-Hui Huang, Yu-Mei Yao, Lan-Gen Ren, Lan Ye and Lin Li Guiyang, China Department of Infectious Diseases, Affiliated Hospital, Guiyang Medical College, Guiyang 550004, China Department of Pharmacology, Gui- yang Medical College, Guiyang 550004, China 《Hepatobiliary & Pancreatic Diseases International》 SCIE CAS 2004年第1期93-98,共6页
BACKGROUND: Epidemiology investigation showed that no worker drunk Maotai liquor for nearly 30 years died of hepatic diseases, and no obvious hepatic fibrosis and cirrho- sis were found in 99 workers who had drunk Mao... BACKGROUND: Epidemiology investigation showed that no worker drunk Maotai liquor for nearly 30 years died of hepatic diseases, and no obvious hepatic fibrosis and cirrho- sis were found in 99 workers who had drunk Maotai liquor for a long period by epidemiology investigation and needle biopsy. The same finding was detected in rats that were drunk by Maotai liquor continued for 56 days. This study was to investigate the effects of Maotai liquor on the liver and its mechanism of preventing hepatic fibrosis. METHODS: After ingestion of Maotai for 56 consecutive days, male SD rats were killed for detecting the levels of metallothionein and malondialdehyde (MDA) in liver tis- sues. Rat hepatic stellate cells (HSCs) and human HSCs were cultured in vitro to observe the effect of Maotai on HSCs proliferation and collagen synthesis. After ingestion of Maotai for 14 consecutive weeks, the livers of male SD rats were harvested for pathohistological examination. RESULTS: The level of metallothionein in the liver of Mao- tai-induced rats increased by 22 folds, whereas the levels of hepatic lipid peroxide and MDA was decreased significantly ( P <0.05) in Maotai-induced animals suffering from CCl4. Maotai demonstrated obvious inhibitory effect on prolifera- tion of HSCs and the inhibition was concentration-depen- dent. Gene expression and protein secretion of collagens could also be inhibited by Maotai. In alcoholic group, typi- cal liver cirrhosis was observed. In Maotai group, however, though fatty degeneration of hepatocytes and mild fibrosis of the interstitium were observed, no obvious hepatic fibro- sis and cirrhosis were found. CONCLUSION: It might be an important mechanism of interfering the progress of hepatic fibrosis that Maotai in- creases the level of metallothionein in the liver and inhibits the activation of HSCs and the synthesis of collagen pro- teins. 展开更多
关键词 liver cirrhosis METALLOTHIONEIN HEPATOCYTES Maotai liquor
下载PDF
Comparison of Algorithms for an Electronic Nose in Identifying Liquors 被引量:6
8
作者 Zhi-biao Shi Tao Yu +2 位作者 Qun Zhao Yang Li Yu-bin Lan 《Journal of Bionic Engineering》 SCIE EI CSCD 2008年第3期253-257,共5页
When the electronic nose is used to identify different varieties of distilled liquors, the pattern recognition algorithm is chosen on the basis of the experience, which lacks the guiding principle. In this research, t... When the electronic nose is used to identify different varieties of distilled liquors, the pattern recognition algorithm is chosen on the basis of the experience, which lacks the guiding principle. In this research, the different brands of distilled spirits were identified using the pattern recognition algorithms (principal component analysis and the artificial neural network). The recognition rates of different algorithms were compared. The recognition rate of the Back Propagation Neural Network (BPNN) is the highest. Owing to the slow convergence speed of the BPNN, it tends easily to get into a local minimum. A chaotic BPNN was tried in order to overcome the disadvantage of the BPNN. The convergence speed of the chaotic BPNN is 75.5 times faster than that of the BPNN. 展开更多
关键词 electronic nose liquor ALGORITHM principal component analysis
下载PDF
Combined effect of US/PFS on the black liquor of making paper 被引量:5
9
作者 SHENZhuang-zhi LANCong-qing SHENJian-zhong 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2005年第1期110-112,共3页
The reed pulping black liquor is used as a sample. Researches of (1) combined effect of ultrasound(US)/polyferric sulphate(PFS)/hydrogen peroxide(H 2O 2); (2) effects of the horn tip areas; (3) effect of dose of PFS w... The reed pulping black liquor is used as a sample. Researches of (1) combined effect of ultrasound(US)/polyferric sulphate(PFS)/hydrogen peroxide(H 2O 2); (2) effects of the horn tip areas; (3) effect of dose of PFS were carried. Extrapolation of these experiments indicated treatment results are possibly related to complex chemical compositions in the reed pulping black liquor. 展开更多
关键词 SONOCHEMISTRY reed pulping black liquor horn tip irradiation area COAGULANT
下载PDF
Application of Two-Dimensional Correlation UV-Vis Spectroscopy in Chinese Liquor Moutai Discrimination 被引量:9
10
作者 Zhengyong Zhang Jiuying Jiang +3 位作者 Guoxiang Wang Hu Wang Jun Liu Haiyan Wang 《American Journal of Analytical Chemistry》 2015年第5期395-401,共7页
Chinese liquor Moutai is the “National alcoholic drink” in China and plays a very important role of social activities in Chinese people’s life. In pursuit of high profits, some illegal counterfeit Moutai liquors ha... Chinese liquor Moutai is the “National alcoholic drink” in China and plays a very important role of social activities in Chinese people’s life. In pursuit of high profits, some illegal counterfeit Moutai liquors have begun to appear in the market. Therefore, it is an urgent need for new techniques to discriminate the genuine and counterfeit Moutai liquor. In this work, the conventional Ultraviolet-Visible (UV-Vis) spectroscopy and two-dimensional correlation UV-Vis spectroscopy are applied to obtain the UV-Vis characteristic of Moutai liquor and counterfeit one, respectively. The experimental results reveal that the conventional UV-Vis spectra of the genuine and counterfeit Moutai liquor are similar. However, the two-dimensional correlation UV-Vis spectra of them are different and this method would be applied to differentiate the counterfeit Moutai liquor from the genuine Moutai liquor. Compared with conventional methods, this novel method has the advantages of easy operation, simple instrumentation and direct recognition, which make it a potential tool in the fields of food safety. 展开更多
关键词 TWO-DIMENSIONAL CORRELATION SPECTRA UV-VIS Spectroscopy Moutai liquor DISCRIMINATION
下载PDF
Hydraulic and carbonizing actions of sulfuric acid to straw pulp and paper black liquor 被引量:3
11
作者 Yang Runchang Zhou Shutian Department of Chenucal Engineering,Xiangtan Univetsity,Xiangtan 411105,Hunan Province,China 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 1995年第1期101-106,共6页
HydraulicandcarbonizingactionsofsulfuricacidtostrawpulpandpaperblackliquorYangRunchang;ZhouShutianDepartment... HydraulicandcarbonizingactionsofsulfuricacidtostrawpulpandpaperblackliquorYangRunchang;ZhouShutianDepartmentofChenucalEnginee... 展开更多
关键词 straw pulp peper black liquor sulfuric acid.
下载PDF
Idiopathic mesenteric phlebosclerosis associated with long-term use of medical liquor:Two case reports and literature review 被引量:15
12
作者 Fang Guo Yu-Fen Zhou +3 位作者 Fan Zhang Fei Yuan Yao-Zong Yuan Wei-Yan Yao 《World Journal of Gastroenterology》 SCIE CAS 2014年第18期5561-5566,共6页
A 62-year-old woman was admitted to our hospital in2011 because of recurrent abdominal pain,nausea and constipation for six months.Computed tomography enterography(CTE)showed tortuous thread-like calcifications in the... A 62-year-old woman was admitted to our hospital in2011 because of recurrent abdominal pain,nausea and constipation for six months.Computed tomography enterography(CTE)showed tortuous thread-like calcifications in the ileocolic vein and right colic vein,while colonoscopy revealed purple-blue mucosa extending from the cecum to the splenic flexure.Based on the results of these tests,the patient was diagnosed with idiopathic mesenteric phlebosclerosis(IMP).She had a history of Chinese medical liquor intake for one and a half years and her symptoms subsided after conservative treatment.In 2013,a 63-year-old male patient who presented with recurrent lower right abdominal pain,bloating,melena and diarrhea for fifteen months was admitted to our institution.Colonoscopy and CTE led to the diagnosis of IMP.He also used Chinese medical liquor for approximately 12 years.The patient underwent total colectomy and the postoperative course was uneventful.We searched for previously published reports on similar cases and analyzed the clinical data of 50 cases identified in PubMed.As some of these patients admitted use of Chinese medicines,we hypothesize that Chinese medicines may play a role in the pathogenesis of IMP. 展开更多
关键词 Idiopathic mesenteric phlebosclerosis Chinese medical liquor ILEUS Colonoscopy Computed tomography enterography
下载PDF
Isolation of Hemicellulose from Wood Chips via Extraction with Kraft Green Liquor 被引量:2
13
作者 SUN Hui XU Ying-kai XU Guo-zhi 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2010年第4期667-671,共5页
The present paper covers the extraction of hemicelluloses from woods, i.e., Eucalyptus Globulus, white fir and Douglas fir via green liquor pretreatment and alkali post-treatment with sodium hydroxide. The effects of ... The present paper covers the extraction of hemicelluloses from woods, i.e., Eucalyptus Globulus, white fir and Douglas fir via green liquor pretreatment and alkali post-treatment with sodium hydroxide. The effects of such extraction conditions as extraction time, temperature on the yields of hemicellulose and the degree of deliginification were investigated. Sugar analyses using Dionex indicate that xylose, glucose and mannose are the main sugar types present in the hemicellulose from Eucalyptus. Other sugar components such as arabinose and galactose were also found in Dogulas fir hemicellulose. The highest yield of hemicellulose was 8.4% for Eucalyptus extracted with green liquor at 130 ℃ for 3.5 h. Further sodium hydroxide extraction for 5 h gave a hemicellulose yield of about 20%. The use of green liquor for the extraction of wood hemicellulose is believed to be the first attempt. 展开更多
关键词 HEMICELLULOSE LIGNIN WOOD Green liquor Alkali extraction
下载PDF
Catalytic Activity of the Black Liquor and Calcium Mixture in CO2 Gasification of Fujian Anthracite 被引量:10
14
作者 Gul-e-Rana JAFFRI 张济宇 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2007年第5期670-679,共10页
CO2 gasification of Fuijian high-metamorphous anthracite with black liquor (BL) and/or mixture of BL and calcium stuff (BL+Ca) as catalyst was studied by using a thermogravimetry under 750-950℃ at ambient pressu... CO2 gasification of Fuijian high-metamorphous anthracite with black liquor (BL) and/or mixture of BL and calcium stuff (BL+Ca) as catalyst was studied by using a thermogravimetry under 750-950℃ at ambient pressure. When the coal was impregnated with an appropriate quantity of Ca and BL mixture, the catalytic activity of CO2 gasification was enhanced obviously. With a loading of 8%Na-BL+2%Ca, the carbon conversion of three coal samples tested reaches up to 92.9%-99.3% at 950℃ within 30min. The continuous formation of alkali surface compounds such as ([-COM], [-CO2M]) and the presence of exchanged Ca, such as calcium phenolate and calcium carboxylates (COO)2Ca, contribute to the increase in catalytic efficiency, and using BL+Ca is more efficient than that adding BL only, The homogeneous model and shrinking-core model were applied to correlate the data of conversion with time and to estimate the reaction rate constants under different temperature. The corresponding reaction activation energy (Ea) and pre-exponential factor of three anthracites were estimated. It is found that Ea is in the range from 73.6 to 121.4kJ·mol^-1 in the case of BL+Ca, and 74.3 to 104.2kJ·mol^-1 when only BL was used as the catalyst, both of which are much less than that from 143.5 to 181.4kJ·mol^-1 if no catalyst used. It is clearly demonstrated that both of BL+Ca mixture and BL could be the source of cheap and effective catalyst for coal gasification. 展开更多
关键词 THERMOGRAVIMETRY black liquor CALCIUM catalytic gasification high-metamorphous anthracite reaction kinetics
下载PDF
Investigation on Steam Gasification of High-metamorphous Anthracite Using Mixed Black Liquor and Calcium Catalyst 被引量:8
15
作者 Gul-e-Rana JAFFRI 张济宇 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2008年第4期575-583,共9页
The catalytic effects of single and mixed catalysts, i.e. single 3%Ca and 5%Na-BL(black liquor) catalysts and mixed 3%Ca+5%Na-BL catalyst, on carbon conversion, gasification reaction rate constant and activation en... The catalytic effects of single and mixed catalysts, i.e. single 3%Ca and 5%Na-BL(black liquor) catalysts and mixed 3%Ca+5%Na-BL catalyst, on carbon conversion, gasification reaction rate constant and activation energy, relative amount of harmful pollutant like sulphur containing gases have been investigated by thermogravimetry in steam gasification under temperature 750℃ to 950℃ at ambient pressure for three high-metarnorphous anthracites (Longyan, Fenghai and Youxia coals in Fujian Province). The mixed catalyst of 3%Ca+5%Na-BL increases greatly the carbon conversion and gasification rate constant by accelerating the gasification reaction C+H2O→CO+H2 due to presence of alkali surfacecompounds [COM], [CO2M] and exchanged calcium phenolate and calcium carboxylate (-COO)2. By adding CaCO3 into BL catalyst in gasification, in addition to improving the catalyst function and enhancing the carbon conversion, the effective desulphurization is also achieved, but the better operating temperature should be below 900℃. The homogenous and shrinking core models can be successfully employed to correlate the relations between the conversion and the gasification .time .and to estimate the reaction rate constant, The reaction acUvaUon energy and pre-exponential factor are estimated and the activation energy for mixed catalyst is in a range of 98.72-166.92 kJ·mol^-1, much less than 177.50-196.46 kJ·mol^-1 for non-catalytic steam gasification for three experimental coals. 展开更多
关键词 mixed catalyst CALCIUM black liquor THERMOGRAVIMETRY steam gasification kinetics sulphur containing gas
下载PDF
Acid precipitation coupled electrodialysis to improve separation of chloride and organics in pulping crystallization mother liquor 被引量:1
16
作者 Zhaoyang Li Rongzong Li +3 位作者 Zhaoxiang Zhong Ming Zhou Min Chen Weihong Xing 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2019年第12期2917-2924,共8页
Inefficient separation of inorganic salts and organic matters in crystallization mother liquor is still a problem to industrial wa stewater treatment since the high salinity significantly impedes organic pollutant deg... Inefficient separation of inorganic salts and organic matters in crystallization mother liquor is still a problem to industrial wa stewater treatment since the high salinity significantly impedes organic pollutant degradation by oxidation or incineration.In the study,acidification combined electrodialysis(ED)was attempted to effectively separate Cl-ions from organics in concentrate pulping wastewater.Membrane’s rejection rate to total organic carbon(TOC)was 85%at wastewater intrinsic pH=9.8 and enhanced to 93%by acidifying it to pH=2 in ED process.Negative-charged alkaline organic compounds(mainly lignin)could be liberated from their sodium salt forms and coagulated in acidification pretreatment.Neutralization of the organic substances also made their electro-migration less effective under electric driving force and in particular improved separation efficiency of chloride and organics.After acid-ED coupled treatment(pH=2 and J=40 mA·cm-2)[TOC]remarkably reduced from 1.315 g·L-1 to 0.048 g·L-1 and[Cl-]accumulated to 130 g·L-1 in concentrate solution.Recovery rate of NaCl was 89%and the power consumption was 0.38 kW·h·kg-1 NaCl.Irreversible fouling was not caused as electric resistance of membrane pile maintained stably.In conclusion,acidic-ED is a practical option to treat salinity organic wastewater when current techniques including thermal evaporation and pressure-driven membrane se paration present limitations. 展开更多
关键词 CRYSTALLIZATION mother liquor Acid precipitation ELECTRODIALYSIS CHLORIDE recovery
下载PDF
Solvent extraction of V(Ⅴ) and Cr(Ⅲ) from acidic leach liquors of ilmenite using Aliquat 336 被引量:9
17
作者 A.A.NAYL H.F.ALY 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2015年第12期4183-4191,共9页
Extraction of V(V) and Cr(III) from acidic sulfate leach liquors of ilmenite using 0.4 mol/L Aliquat 336 chloride in kerosene was carried out. Different parameters affecting the extraction process such as equilibr... Extraction of V(V) and Cr(III) from acidic sulfate leach liquors of ilmenite using 0.4 mol/L Aliquat 336 chloride in kerosene was carried out. Different parameters affecting the extraction process such as equilibrium time, sulfate concentration, Aliquat 336 concentration, equilibrium p H and the extraction temperature were investigated. Extraction of V(V) and Cr(III) by Aliquat 336 involved anion exchange mechanism, and the extracted species are [(VO2SO4)R4N]org at low equilibrium p H for V(V) and [R4N-Cr(OH)4]org at high equilibrium p H for Cr(III). Calculated thermodynamic parameters show that the extraction process is endothermic reaction for V(V) and exothermic for Cr(III). Also, calculated values of ?Gex and ?Sex indicate that the extraction reactions of V(V) and Cr(III) proceed as non-spontaneous reaction is more random. V(V) and Cr(III) were stripped, precipitated, separated and calcined at 500 °C for 2.0 h to produce the corresponding oxide in pure form after rinsing and drying. 展开更多
关键词 extraction acidic leach liquor Aliquat 336 V(V) Cr(III)
下载PDF
Near-Infrared Spectroscopy Combined with Partial Least Squares Discriminant Analysis Applied to Identification of Liquor Brands 被引量:4
18
作者 Bin Yang Lijun Yao Tao Pan 《Engineering(科研)》 2017年第2期181-189,共9页
The identification of liquor brands is very important for food safety. Most of the fake liquors are usually made into the products with the same flavor and alcohol content as regular brand, so the identification for t... The identification of liquor brands is very important for food safety. Most of the fake liquors are usually made into the products with the same flavor and alcohol content as regular brand, so the identification for the liquor brands with the same flavor and the same alcohol content is essential. However, it is also difficult because the components of such liquor samples are very similar. Near-infrared (NIR) spectroscopy combined with partial least squares discriminant analysis (PLS-DA) was applied to identification of liquor brands with the same flavor and alcohol content. A total of 160 samples of Luzhou Laojiao liquor and 200 samples of non-Luzhou Laojiao liquor with the same flavor and alcohol content were used for identification. Samples of each type were randomly divided into the modeling and validation sets. The modeling samples were further divided into calibration and prediction sets using the Kennard-Stone algorithm to achieve uniformity and representativeness. In the modeling and validation processes based on PLS-DA method, the recognition rates of samples achieved 99.1% and 98.7%, respectively. The results show high prediction performance for the identification of liquor brands, and were obviously better than those obtained from the principal component linear discriminant analysis method. NIR spectroscopy combined with the PLS-DA method provides a quick and effective means of the discriminant analysis of liquor brands, and is also a promising tool for large-scale inspection of liquor food safety. 展开更多
关键词 IDENTIFICATION of liquor Brands NEAR-INFRARED Spectroscopy Partial Least SQUARES DISCRIMINANT ANALYSIS Principal Component Linear DISCRIMINANT ANALYSIS
下载PDF
Growth properties of mixed liquor suspended solids in SMBR for pharmaceutical wastewater treatment 被引量:2
19
作者 祁佩时 李正 陈兆波 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2010年第2期171-175,共5页
This paper presents the performance results of a 366-day pilot-scale submerged membrane bioreactor (SMBR) for treating high-strength pharmaceutical wastewater. The study focuses on the growth properties of mixed liquo... This paper presents the performance results of a 366-day pilot-scale submerged membrane bioreactor (SMBR) for treating high-strength pharmaceutical wastewater. The study focuses on the growth properties of mixed liquor suspended solids (MLSS) in SMBR operated at high volumetric loading rates. The influences of MLSS on COD removal,sludge yield,oxygen utilization rates and sludge viscosity are studied. Results show that the bioreactor can be operated at higher volumetric loading rate with a low sludge yield. VSS/SS and observed sludge yield coefficient (Yo) present a decreasing trend with the decrease of hydraulic retention time (HRT) . Sludge oxygen utilization rate decreases with the increase of mixed liquor volatile suspended solids (MLVSS) . A mathematical model between sludge viscosity and MLSS is developed. 展开更多
关键词 submerged membrane bioreaetor (SMBR) pharmaceutical wastewater mixed liquor suspended solids
下载PDF
Synthesis of Fe_3O_4 Magnetic Powder from Spent Pickling Liquors 被引量:1
20
作者 Xingyao Wang Feifei Lv 《Transactions of Tianjin University》 EI CAS 2018年第1期45-50,共6页
Spent pickling liquors pose a serious environmental problem in most industrialized countries, mainly owing to their corrosive properties and their ferrous iron and hydrochloric acid content. In this paper, spent pickl... Spent pickling liquors pose a serious environmental problem in most industrialized countries, mainly owing to their corrosive properties and their ferrous iron and hydrochloric acid content. In this paper, spent pickling liquor was used as an inexpensive raw material to prepare Fe304 magnetic powder via an oxidation method. Being able to recover the dissolved iron from spent pickling liquors would not only salvage a valuable material but also render the effluent environmentally benign. The structure of the Fe_3O_4 magnetic powder was characterized by X-ray diffraction. The morphology and size were characterized by scanning electron microscopy and transmission electron microscopy. Their magnetic properties were tested at room temperature by a vibrating sample magnetometer. In addition, the saturation magnetization of Fe_3 O_4 products can be further enhanced to 96.1 emu/g after purification. 展开更多
关键词 SPENT PICKLING liquor FE3O4 magnetic POWDER OXIDATION
下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部