VOL. 2, NO. 3 (2022)最新文献

LEUCOBRYUM GLAUCULUM MOSS AS A BIOSORBENT FOR REMOVALOF WATER HARDNESS 青苔作为去除水硬度的生物吸附剂

VOL. 2, NO. 3 (2022) Pub Date : 2022-12-31 DOI: 10.57131/jstm.2022.3.2

Armin Buljubašić, V. Stuhli, Abdel Đozić, M. Zohorović, A. Odobašić

引用次数: 0

COMPARISON OF ELECTROCOAGULATION COUPLED WITH SYNTHETIC ZEOLITE,ULTRASOUND AND TWO STEPS ELECTROCOAGULATION 电混凝与合成沸石、超声和两步电混凝的比较

VOL. 2, NO. 3 (2022) Pub Date : 2022-12-31 DOI: 10.57131/jstm.2022.3.1

N. Vukojević Medvidović, L. Vrsalović, Sandra Svilović, Mirjana Cestarić

{"title":"COMPARISON OF ELECTROCOAGULATION COUPLED WITH SYNTHETIC ZEOLITE,\u0000ULTRASOUND AND TWO STEPS ELECTROCOAGULATION","authors":"N. Vukojević Medvidović, L. Vrsalović, Sandra Svilović, Mirjana Cestarić","doi":"10.57131/jstm.2022.3.1","DOIUrl":"https://doi.org/10.57131/jstm.2022.3.1","url":null,"abstract":"Due to the very complex composition of leachate wastewater, combining two or more physical, chemical,\u0000or biological processes, carried out simultaneously or sequentially, is highly needed in order to obtain\u0000effluent suitable for further discharge into sewage. In this paper, electrocoagulation coupled with\u0000synthetic zeolite (EC-NaX), electrocoagulation coupled with ultrasound (EC-US), and two steps\u0000electrocoagulation (EC-1st and EC-2nd) were tested for compost leachate treatment, with very high initial\u0000organic loading and acidic pH. The comparison of each process was done in regard to the following\u0000parameters: pH, electrical conductivity and temperature change, removal percentage of chemical oxygen\u0000demand (COD), turbidity, total solids change, settling ability, and electrode consumption. Results highlight\u0000the EC-NaX as the best option for the treatment of compost leachate, due to the highest removal\u0000percentage of COD (51.91%), satisfactory removal percentage of turbidity (97%), good settling abilities, and\u0000lowest electrode consumption. However, the final COD values in the effluent are still significantly high\u0000for further discharge into sewage systems, thus additional treatment needs to be applied. Also, the final\u0000acidic pH, high values of electrical conductivity, and high temperature of effluent need to be solved in\u0000further treatment steps.","PeriodicalId":349778,"journal":{"name":"VOL. 2, NO. 3 (2022)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130200851","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

INFLUENCE OF BORON, ZIRCONIUM, AND TELLURIUM ON THE IMPACTTOUGHNESS OF X8CrNiS18-9 STEEL 硼、锆、碲对X8CrNiS18-9钢冲击韧性的影响

VOL. 2, NO. 3 (2022) Pub Date : 2022-12-31 DOI: 10.57131/jstm.2022.3.4

D. Mujagić, A. Imamović, M. Hadžalić

引用次数: 0

THE INFLUENCE OF PROCESS PARAMETERS ON BROWN STOCK PULP WASHINGAT NATRON-HAYAT MAGLAJ 工艺参数对褐煤浆水洗的影响

VOL. 2, NO. 3 (2022) Pub Date : 2022-12-31 DOI: 10.57131/jstm.2022.3.5

Armina Čamić, Šefkija Botonjić

{"title":"THE INFLUENCE OF PROCESS PARAMETERS ON BROWN STOCK PULP WASHING\u0000AT NATRON-HAYAT MAGLAJ","authors":"Armina Čamić, Šefkija Botonjić","doi":"10.57131/jstm.2022.3.5","DOIUrl":"https://doi.org/10.57131/jstm.2022.3.5","url":null,"abstract":"Brown stock washing is one of the major unit operations within the pulp manufacturing business.\u0000Poor operating washers have the potential to significantly and negatively affect almost every other area of a pulp and paper mill, including the mill’s environmental performance. The objective of the pulp washing is to remove the soluble impurities such as organic solids (lignin), fines, inorganic solids (Na, Mg, Ca, and K ions), and byproducts after each processing step. The present paper attempts to look\u0000at various parameters influencing pulp washing at Natron-Hayat Maglaj to ensure a complete understanding of the process. The results showed for this mixture of raw materials (15 % pine and 85 % fir) that the most influential parameters are Kappa number and dilution factor. Working with a high Kappa number above 50 requires additional equipment. Online control of the dilution factor would further improve the quality of the washing process and provide additional saving water and savings at the Evaporation plant. The First step for the future to improve the washing of unbleached kraft pulp is the optimization of the washing process through advanced control.","PeriodicalId":349778,"journal":{"name":"VOL. 2, NO. 3 (2022)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127836766","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

INTENSIFICATION OF LOW-CARBON STEEL DESULPHURISATION IN THEINDUCTION FURNACE 感应炉强化低碳钢脱硫

VOL. 2, NO. 3 (2022) Pub Date : 2022-12-31 DOI: 10.57131/jstm.2022.3.3

R. Sunulahpašić, A. Imamović, H. Avdušinović

引用次数: 0