The Open Chemical Engineering Journal最新文献_第10页

Mixing Experimental Study on Water-rock Interaction (WRI) in the Inland Shallow Salt Groundwater Area 内陆浅层盐地下水区水岩相互作用(WRI)混合试验研究

The Open Chemical Engineering Journal Pub Date : 2015-04-17 DOI: 10.2174/1874123101509010025

Liu Changsuo, Xing Liting, W. Liyan, Zhang Fengjuan, L. Bo

{"title":"Mixing Experimental Study on Water-rock Interaction (WRI) in the Inland Shallow Salt Groundwater Area","authors":"Liu Changsuo, Xing Liting, W. Liyan, Zhang Fengjuan, L. Bo","doi":"10.2174/1874123101509010025","DOIUrl":"https://doi.org/10.2174/1874123101509010025","url":null,"abstract":"The shallow salt groundwater is widely distributed in North Shandong, which makes it difficult for people and livestock to drink daily. In addtion, the genetic mechanism of shallow salt groundwater is complicated. The study was carried out in Xiyan Village of Jiyang County, it choosed the silt buried in 3-9 m depth, shallow salt groundwater and atmospheric precipitation as test materials to measure chemical composition of groundwater. Base on soluble salt test, rain-saltwater mixing test and rain-saltwater-silt mixing test, ions component of mixture were measured, the hydrogeochemical action process of WRI was analyzed and formation-evolution of inland saltwater was deepened knowledge. It is shown that (1) The occurrence threshold of WRI was 20%, which was the volume of saltwater in mixture. (2) When the rainwater, saltwater and silt were mixed together for 12 hours, calcite and dolomite precipitated, halite and gypsum were in dissolved state. When the volume of saltwater in mixture was larger than 20%, gypsum was closed to saturation, the main cation exchange was Mg-Na, the exchange of Ca-Na was in the second place; The order for anion adsorption amount of aquifer medium was SO4 2- > HCO3 - >Cl - . The study proves that groundwater circulation is slow and continual, some hydrochemical actions (i.e. ion exchange, adsorption, mineral dissolution or precipitation, and strong evaporation-concentration) are happened during the evolution process of inland shallow groundwater. All these will lead to ClSO4-MgNa type salt or slight salt water with TDS being larger than 2g·L -1 .","PeriodicalId":22933,"journal":{"name":"The Open Chemical Engineering Journal","volume":"27 1","pages":"25-28"},"PeriodicalIF":0.0,"publicationDate":"2015-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83360642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Preparation and Application of Biochar from Brewery`s Spent Grain and Sewage Sludge 啤酒废粮与污泥生物炭的制备与应用

The Open Chemical Engineering Journal Pub Date : 2015-04-17 DOI: 10.2174/1874123101509010014

Yinxin Zhang, Zhang Jishi, M. Yi

引用次数: 6

Adaptability Evaluation of Polymer Flooding for Zahra Oil Field 扎赫拉油田聚合物驱适应性评价

The Open Chemical Engineering Journal Pub Date : 2015-03-31 DOI: 10.2174/1874123101509010007

P. Lv, Ming-yuan Li, M. Lin, Bo Peng, Z. Dong, Zihao Yang

引用次数: 0

Thermodynamic Modeling of High-pressure Equilibrium Data for the Systems L-lactic Acid + (Propane + Ethanol) and L-lactic Acid + (Carbon Dioxide + Ethanol) l -乳酸+(丙烷+乙醇)和l -乳酸+(二氧化碳+乙醇)体系高压平衡数据的热力学建模

The Open Chemical Engineering Journal Pub Date : 2015-02-26 DOI: 10.2174/1874123101509010001

M. Meireles, I. C. Debien, A. A. Rigo, M. Corazza, M. Mazutti, J. V. Oliveira

引用次数: 0

Sediment Quality Assessment for Heavy Metal Contamination in theDongzhai Harbor (Hainan Island, China) with Pollution Indice Approach 污染指数法评价海南岛东寨港沉积物重金属污染

The Open Chemical Engineering Journal Pub Date : 2014-12-31 DOI: 10.2174/1874123101408010032

Jie Yang, Bao-jie Zhang, X. Peng, Hua Wang, Zhihang Li, W. Cai, Hongda Fang

{"title":"Sediment Quality Assessment for Heavy Metal Contamination in theDongzhai Harbor (Hainan Island, China) with Pollution Indice Approach","authors":"Jie Yang, Bao-jie Zhang, X. Peng, Hua Wang, Zhihang Li, W. Cai, Hongda Fang","doi":"10.2174/1874123101408010032","DOIUrl":"https://doi.org/10.2174/1874123101408010032","url":null,"abstract":"This study concerns the distribution and potential sources of elevated heavy metal concentrations (Cu, Zn, Pb, Cd, As) in surface sediments of the Dongzhai Harbor, Hainan Island,a national important mangrove ecosystem protection area.It was found that the pollution of As may occur occasional biological effect by numerical Sediment Quality Guidelines. Further, Geoaccumulation indices (Igeo) suggest there are serious pollution levels of As at all five stations. Spatial distribution of ecotoxicological index and pollution load index suggested that most of the surface sediments have a 9% probability of being toxic and the potential ecological risk zone appear in northern and southern of Dongzhai Harbor. Correlation analysis, principal component analysis, and cluster analysis showed that these metals primarily originate from natural sources. As and Pb resulted primarily from aquaculture, and combustion of gasoline and diesel fuel by ships. The present study provides a baseline record of heavy metals in mangrove surface sediments on the Dongzhai Harbor, and provide a useful aid for sustainable marine management in this region.","PeriodicalId":22933,"journal":{"name":"The Open Chemical Engineering Journal","volume":"69 1","pages":"32-37"},"PeriodicalIF":0.0,"publicationDate":"2014-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79691038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Experimental Study on Chemical Reduction Method to Remove the ChlorateIons in the Water 化学还原法去除水中氯离子的实验研究

The Open Chemical Engineering Journal Pub Date : 2014-12-31 DOI: 10.2174/1874123101408010025

Xiu-guo Lu, Ji-Hong Duan, Yue Deng

引用次数: 0

Application & Research on Foundation Stabilization Structure duringWork Progress of Civil Engineering 基础稳定结构在土木工程施工中的应用与研究

The Open Chemical Engineering Journal Pub Date : 2014-12-31 DOI: 10.2174/1874123101408010038

Guochao Lu

{"title":"Application & Research on Foundation Stabilization Structure duringWork Progress of Civil Engineering","authors":"Guochao Lu","doi":"10.2174/1874123101408010038","DOIUrl":"https://doi.org/10.2174/1874123101408010038","url":null,"abstract":"To study the method about structure layer of geocell reinforced with macadam, as well as effectiveness and practicality of such a method in foundation reinforcement during work progress of civil engineering; Method: Basic theo- ry and method about foundation reinforcement structure applied in work process of civil engineering have been studied. Physical model of experimental tank built by loaded plates has been established. Experiments have been conducted on the loaded-plate tank for geocells in different specification and filler in the geocell to determine the relationship between loads at various of structure layers and longitudinal travel; Experimental results showed that structure layer of geocell re- inforced with macadam could improve vertical deformation in a better way, whose efficiency became smaller along with weld spacing of geocell getting larger within a certain range. Besides, specification of the filler also imposed effects onto the reinforcement efficiency, where filler with larger particle diameter brought about better reinforcement effects. The ex- perimental results demonstrated rationality and effectiveness of structure layer of geocell reinforced with macadam and provided staff members responsible for civil engineering construction with reference on selecting the foundation rein- forcement scheme.","PeriodicalId":22933,"journal":{"name":"The Open Chemical Engineering Journal","volume":"183 1","pages":"38-42"},"PeriodicalIF":0.0,"publicationDate":"2014-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80418247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impacts of Agricultural Management Practices on the Risk of Nitrogen and Phosphorus Losses at Catchment Scales by Using GIS and Index Models 基于GIS和指数模型的农业管理措施对流域氮磷损失风险的影响

The Open Chemical Engineering Journal Pub Date : 2014-12-31 DOI: 10.2174/1874123101408010019

Ping Zhang, Liang He, Tao Zhang, Peishu Huo

{"title":"Impacts of Agricultural Management Practices on the Risk of Nitrogen and Phosphorus Losses at Catchment Scales by Using GIS and Index Models","authors":"Ping Zhang, Liang He, Tao Zhang, Peishu Huo","doi":"10.2174/1874123101408010019","DOIUrl":"https://doi.org/10.2174/1874123101408010019","url":null,"abstract":"The unreasonable agricultural management measure is the main cause of the risk of nitrogen and phosphorus losses. The objective of this paper was to evaluate the impacts of agricultural management practices on the risk of nitrogen and phosphorus losses at catchment scales based on GIS and integrated index models. The results showed that 93.1% of the catchment was no risk and low risk area, while 6.9% for medium and high risk of nitrogen and phosphorus losses. Spatial analysis of risk index indicated that different agricultural management practices lead to number and proportion of grids are different. At very high risk area, about 599 of grid number is only for the actual management practice, accounting for 0.22% of the total, while at very low risk area, 165884.00 and 60.51% for river buffer zone respectively. Control effect of different agricultural management practices for risk of nitrogen and phosphorus losses is better, which very low and low risk areas of based fertilizer applied deeply and buffer zone construction accounted for 98% and 95.6%, and the control effect sorted as follows: base fertilizer applied deeply> construction of river buffer zone> reduced nitrogen application> reduced phosphorus application.","PeriodicalId":22933,"journal":{"name":"The Open Chemical Engineering Journal","volume":"77 1","pages":"19-24"},"PeriodicalIF":0.0,"publicationDate":"2014-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86042360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Co-Precipitation of Beta-Carotene and Bio-Polymer Using Supercritical Carbon Dioxide as Antisolvent 超临界二氧化碳作抗溶剂共沉淀β -胡萝卜素与生物聚合物

The Open Chemical Engineering Journal Pub Date : 2014-05-30 DOI: 10.2174/1874123101004010011

E. Franceschi, A. M. Cezaro, S. R. Ferreira, M. H. Kunita, E. Muniz, A. Rubira, J. V. Oliveira

引用次数: 21

Supercritical Fluid Extraction and Stabilization of Phenolic CompoundsFrom Natural Sources – Review (Supercritical Extraction and Stabilizationof Phenolic Compounds) 天然酚类化合物的超临界萃取和稳定——综述(酚类化合物的超临界萃取和稳定)

The Open Chemical Engineering Journal Pub Date : 2014-05-30 DOI: 10.2174/1874123101004010051

M. R. M. Júnior, A. Leite, N. Dragano

{"title":"Supercritical Fluid Extraction and Stabilization of Phenolic CompoundsFrom Natural Sources – Review (Supercritical Extraction and Stabilizationof Phenolic Compounds)","authors":"M. R. M. Júnior, A. Leite, N. Dragano","doi":"10.2174/1874123101004010051","DOIUrl":"https://doi.org/10.2174/1874123101004010051","url":null,"abstract":"Phenolic compounds are components commonly found in fruits and vegetables. Recently, they have been sub- ject of considerable scientific and therapeutic interest mainly due to their antioxidant properties and related health- promoting benefits, as confirmed by the numerous papers devoted to various properties of these compounds. Thus, the ex- tractions of phenolic compounds with functional properties from natural sources have attracted special interests. Super- critical fluid extraction offers a number of advantages over conventional extraction methods above all in relation to the conditions employed during the extraction process that ensures minimal alteration of the active phenolics and the healing properties could be more easily preserved. This work provides an updated overview on the principal applications of Su- percritical fluid extraction in recovery of bioactive phenolics emphasizing the effects of temperature, pressure, addition of co-solvents and time on the extraction yield of these compounds and their antioxidant activities for a possible applications in food, cosmetic or pharmaceutical industries.","PeriodicalId":22933,"journal":{"name":"The Open Chemical Engineering Journal","volume":"65 1","pages":"51-60"},"PeriodicalIF":0.0,"publicationDate":"2014-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86253862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 51