Pub Date : 2021-03-12DOI: 10.1109/ATiGB50996.2021.9423375
Pham Quoc Thai, Huynh Duc Tri, Nguyen Thi Hai Van
This study aims to optimize gear ratios for the manual transmission of a conventional vehicle to enhance fuel efficiency and reduce emissions. Using Simulink-Matlab software, Simplex method, and algorithmic functions to analyze and calculate a conventional vehicle's fuel consumption in the standardized driving cycles, solving the optimization problem, checking and comparing with other initial parameters and termination criterion.
{"title":"Optimization of the gear ratios for a vehicle manual transmission","authors":"Pham Quoc Thai, Huynh Duc Tri, Nguyen Thi Hai Van","doi":"10.1109/ATiGB50996.2021.9423375","DOIUrl":"https://doi.org/10.1109/ATiGB50996.2021.9423375","url":null,"abstract":"This study aims to optimize gear ratios for the manual transmission of a conventional vehicle to enhance fuel efficiency and reduce emissions. Using Simulink-Matlab software, Simplex method, and algorithmic functions to analyze and calculate a conventional vehicle's fuel consumption in the standardized driving cycles, solving the optimization problem, checking and comparing with other initial parameters and termination criterion.","PeriodicalId":6690,"journal":{"name":"2020 Applying New Technology in Green Buildings (ATiGB)","volume":"15 1","pages":"158-165"},"PeriodicalIF":0.0,"publicationDate":"2021-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83678670","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}
Pub Date : 2021-03-12DOI: 10.1109/ATiGB50996.2021.9423415
Sy-Hung Nguyen, Thi-Phuong-Huyen Tran, A. Le, Van-Duong Vu, Van-Huyen-Linh Phan
In this paper, the authors present solutions to reinforce steel structures of industrial plants to make them eligible to install solar cells on roofs without using welded bonding. All solutions offered use bolt links which are suitable for fire protection requirements and result in fast construction and less disturbance to the factory's production. The solutions also take into account the feasibility of the construction work in accordance with the factory equipment system and the ceiling, as well as the aesthetics of the reinforcement building. In addition, the method of estimating the hanging load from purlin deflection and the calculation method of the reinforcement structure in two stages are also provided.
{"title":"Solutions for reinforcing steel structures of industrial plants without using welded bonding","authors":"Sy-Hung Nguyen, Thi-Phuong-Huyen Tran, A. Le, Van-Duong Vu, Van-Huyen-Linh Phan","doi":"10.1109/ATiGB50996.2021.9423415","DOIUrl":"https://doi.org/10.1109/ATiGB50996.2021.9423415","url":null,"abstract":"In this paper, the authors present solutions to reinforce steel structures of industrial plants to make them eligible to install solar cells on roofs without using welded bonding. All solutions offered use bolt links which are suitable for fire protection requirements and result in fast construction and less disturbance to the factory's production. The solutions also take into account the feasibility of the construction work in accordance with the factory equipment system and the ceiling, as well as the aesthetics of the reinforcement building. In addition, the method of estimating the hanging load from purlin deflection and the calculation method of the reinforcement structure in two stages are also provided.","PeriodicalId":6690,"journal":{"name":"2020 Applying New Technology in Green Buildings (ATiGB)","volume":"17 1","pages":"31-38"},"PeriodicalIF":0.0,"publicationDate":"2021-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88063705","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}
Pub Date : 2021-03-12DOI: 10.1109/ATiGB50996.2021.9423016
Ngoc Hoai An Nguyen, Anh Tuan Vo
In this paper, a new, robust control of magnetic levitation systems (MLSs) is introduced. The control proposal is developed based on non-singular fast terminal sliding mode control (NFTSMC) and finite-time control theory. Consequently, the proposed system achieves high tracking accuracy, robustness against uncertain dynamics and exterior disturbances, and fast convergence in finite-time. The providence of the stability and finite-time convergence of the control proposal has been proved by the Lyapunov principle. To verify the effectiveness of the control proposal, the experiments are performed for trajectory tracking control of a magnetic levitation system (MLS).
{"title":"A New Robust Tracking Control Method of Magnetic Levitation Systems with Finite-Time Convergence Guarantee","authors":"Ngoc Hoai An Nguyen, Anh Tuan Vo","doi":"10.1109/ATiGB50996.2021.9423016","DOIUrl":"https://doi.org/10.1109/ATiGB50996.2021.9423016","url":null,"abstract":"In this paper, a new, robust control of magnetic levitation systems (MLSs) is introduced. The control proposal is developed based on non-singular fast terminal sliding mode control (NFTSMC) and finite-time control theory. Consequently, the proposed system achieves high tracking accuracy, robustness against uncertain dynamics and exterior disturbances, and fast convergence in finite-time. The providence of the stability and finite-time convergence of the control proposal has been proved by the Lyapunov principle. To verify the effectiveness of the control proposal, the experiments are performed for trajectory tracking control of a magnetic levitation system (MLS).","PeriodicalId":6690,"journal":{"name":"2020 Applying New Technology in Green Buildings (ATiGB)","volume":"19 5-6","pages":"130-133"},"PeriodicalIF":0.0,"publicationDate":"2021-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91472582","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}
Pub Date : 2021-03-12DOI: 10.1109/ATiGB50996.2021.9423149
C. Bui, Thanh Chau Nguyen-Le, Ngoc Anh Ho-Tran, Vinh Cong Nguyen
This work aims to study a flow of viscoplastic fluid in a two-dimensional (2D) 90 degree elbow at Re = 100 and Re = 1000 using a numerical approach. The fluid investigated is of sediment/clay suspension exhibiting yield stress characteristics. Bentonite-water suspension 7.5-15wt% and laponite-water suspension 3.5-5wt%, which correspond Bn = 19.76-1470.94 at Re = 100 and Bn = 1.976-147.09 at Re = 1000, are used for simulations. To model the viscoplastic effect, Herschel-Bulkley’s bi-viscosity model for Bingham type is employed. Various flow aspects, i.e., viscosity distribution, streamline pattern, formation of unyielded zones, and pressure distribution, are presented and analyzed in detail. Results show that at Re = 100, neither circulation wake nor static rigid zone is formed in the flow field pattern meanwhile at Re = 1000, the static rigid zone exists at Bn = 6.83 (bentonite 7.5wt%) and Bn = 20.88 (bentonite 10wt%). Moreover, the moving rigid zones generally become larger with the increasing Bn. Furthermore, results for pressure loss per length and friction factor are reported. Approximation functions for pressure loss estimation are also proposed.
{"title":"Flow Characteristics of Sediment Suspension in a Two-Dimensional Channel with the Presence of an Elbow","authors":"C. Bui, Thanh Chau Nguyen-Le, Ngoc Anh Ho-Tran, Vinh Cong Nguyen","doi":"10.1109/ATiGB50996.2021.9423149","DOIUrl":"https://doi.org/10.1109/ATiGB50996.2021.9423149","url":null,"abstract":"This work aims to study a flow of viscoplastic fluid in a two-dimensional (2D) 90 degree elbow at Re = 100 and Re = 1000 using a numerical approach. The fluid investigated is of sediment/clay suspension exhibiting yield stress characteristics. Bentonite-water suspension 7.5-15wt% and laponite-water suspension 3.5-5wt%, which correspond Bn = 19.76-1470.94 at Re = 100 and Bn = 1.976-147.09 at Re = 1000, are used for simulations. To model the viscoplastic effect, Herschel-Bulkley’s bi-viscosity model for Bingham type is employed. Various flow aspects, i.e., viscosity distribution, streamline pattern, formation of unyielded zones, and pressure distribution, are presented and analyzed in detail. Results show that at Re = 100, neither circulation wake nor static rigid zone is formed in the flow field pattern meanwhile at Re = 1000, the static rigid zone exists at Bn = 6.83 (bentonite 7.5wt%) and Bn = 20.88 (bentonite 10wt%). Moreover, the moving rigid zones generally become larger with the increasing Bn. Furthermore, results for pressure loss per length and friction factor are reported. Approximation functions for pressure loss estimation are also proposed.","PeriodicalId":6690,"journal":{"name":"2020 Applying New Technology in Green Buildings (ATiGB)","volume":"1 1","pages":"87-93"},"PeriodicalIF":0.0,"publicationDate":"2021-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81952300","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}
Pub Date : 2021-03-12DOI: 10.1109/ATiGB50996.2021.9423136
Duy Chung Tran, Van Huy Le
This paper presents how to control a mobile robot for tracking a priori path by using multi-sensors. The mobile robot can be monitored and controlled through multi-sensors information fusion technology based on the Internet of Things (IoTs). The mobile robot thus can operate in the environment of the closed space where unauthorized humans cannot enter with the reliable and highest monitoring accuracy. Moreover, an alarm message can also be sent to the mobile application based on IoT.
{"title":"Safe Navigation for Indoor Mobile Robot Based on IoT Information","authors":"Duy Chung Tran, Van Huy Le","doi":"10.1109/ATiGB50996.2021.9423136","DOIUrl":"https://doi.org/10.1109/ATiGB50996.2021.9423136","url":null,"abstract":"This paper presents how to control a mobile robot for tracking a priori path by using multi-sensors. The mobile robot can be monitored and controlled through multi-sensors information fusion technology based on the Internet of Things (IoTs). The mobile robot thus can operate in the environment of the closed space where unauthorized humans cannot enter with the reliable and highest monitoring accuracy. Moreover, an alarm message can also be sent to the mobile application based on IoT.","PeriodicalId":6690,"journal":{"name":"2020 Applying New Technology in Green Buildings (ATiGB)","volume":"1 1","pages":"142-145"},"PeriodicalIF":0.0,"publicationDate":"2021-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76379378","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}
Pub Date : 2021-03-12DOI: 10.1109/ATiGB50996.2021.9423337
Thanh-Phong Pham, O. Sename, H. Dung, Duy Duong Pham
This paper presents a dynamic H∞ observer for damper force estimation of a semi-active Electro- Rheological (ER) damper in an automotive suspension system. Firstly, an extended nonlinear quarter-car model is developed to capture the main behaviors (dynamic and nonlinear) of the ER dampers. The dynamic H∞ observer is designed to minimize the effects of unknown disturbances (measurement noises and road profile) on the estimation errors by using an H∞ approach, while the nonlinearity coming from the damper model is satisfied a Lipschitz condition. This new estimation method only uses two low-cost sensors (sprung mass and unsprung mass accelerometers) as the inputs of the proposed observer. Then, the observer is implemented on the INOVE test bench from GIPSA-lab (1/5-scaled real vehicle) to assess experimentally the performances of the approach in real-time. Both simulation and experimental results demonstrate the effectiveness of the proposed observer.
{"title":"Dynamic H∞ observer for real-time damper force estimation of a semi-active automotive suspension system","authors":"Thanh-Phong Pham, O. Sename, H. Dung, Duy Duong Pham","doi":"10.1109/ATiGB50996.2021.9423337","DOIUrl":"https://doi.org/10.1109/ATiGB50996.2021.9423337","url":null,"abstract":"This paper presents a dynamic H∞ observer for damper force estimation of a semi-active Electro- Rheological (ER) damper in an automotive suspension system. Firstly, an extended nonlinear quarter-car model is developed to capture the main behaviors (dynamic and nonlinear) of the ER dampers. The dynamic H∞ observer is designed to minimize the effects of unknown disturbances (measurement noises and road profile) on the estimation errors by using an H∞ approach, while the nonlinearity coming from the damper model is satisfied a Lipschitz condition. This new estimation method only uses two low-cost sensors (sprung mass and unsprung mass accelerometers) as the inputs of the proposed observer. Then, the observer is implemented on the INOVE test bench from GIPSA-lab (1/5-scaled real vehicle) to assess experimentally the performances of the approach in real-time. Both simulation and experimental results demonstrate the effectiveness of the proposed observer.","PeriodicalId":6690,"journal":{"name":"2020 Applying New Technology in Green Buildings (ATiGB)","volume":"111 1","pages":"12-17"},"PeriodicalIF":0.0,"publicationDate":"2021-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78869317","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}
Pub Date : 2021-03-12DOI: 10.1109/ATiGB50996.2021.9423156
T. Tran, Ha Thuong Dinh, T. Nguyen
Harvesting is a crucial step as it can represent 20 to 30 % of the overall cost of the whole process of microalgae exploitation for various applications such as cosmetics, neutracetic, food or energy. Generally, microalgae components are recovered after biomass dewatering and drying. In order to minimize energy requirements recovery would have to be performed from wet biomass by low-cost and low energy requirements technologies. For membrane processes, where pumping is generally the main operating cost, the culture medium is eliminated by permeation through a semi-permeable membrane. In this study, the dynamic cross-flow filtrations were performed in terms of permeation flux and maximum cell concentration reachable. The use of dynamic filtration system where the shear rate was independent on the feed flow, allow to reach better flux. The extrapolation to zero flux showed that it would be theoretically possible to achieve up to a factor of concentration close to 1000 was 200 g DM. L−1 (gdry matter. L−1).
{"title":"Harvesting of microalgae inoculum in culture medium by membrane ultrafiltration","authors":"T. Tran, Ha Thuong Dinh, T. Nguyen","doi":"10.1109/ATiGB50996.2021.9423156","DOIUrl":"https://doi.org/10.1109/ATiGB50996.2021.9423156","url":null,"abstract":"Harvesting is a crucial step as it can represent 20 to 30 % of the overall cost of the whole process of microalgae exploitation for various applications such as cosmetics, neutracetic, food or energy. Generally, microalgae components are recovered after biomass dewatering and drying. In order to minimize energy requirements recovery would have to be performed from wet biomass by low-cost and low energy requirements technologies. For membrane processes, where pumping is generally the main operating cost, the culture medium is eliminated by permeation through a semi-permeable membrane. In this study, the dynamic cross-flow filtrations were performed in terms of permeation flux and maximum cell concentration reachable. The use of dynamic filtration system where the shear rate was independent on the feed flow, allow to reach better flux. The extrapolation to zero flux showed that it would be theoretically possible to achieve up to a factor of concentration close to 1000 was 200 g DM. L−1 (gdry matter. L−1).","PeriodicalId":6690,"journal":{"name":"2020 Applying New Technology in Green Buildings (ATiGB)","volume":"60 1","pages":"155-157"},"PeriodicalIF":0.0,"publicationDate":"2021-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81287637","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}
Pub Date : 2021-03-12DOI: 10.1109/ATiGB50996.2021.9423109
Dinh-Viet Le, C. Phan
Recently, Falling Weight Deflectometer (FWD) is one of the most significant testing used to measure the surface deflections under impact load subjected to circle plate which was used to back-calculating elastic moduli of the road pavement layer. Several back-calculation programs are useful for back-calculating road pavement layer moduli. A genetic algorithm (GA) was used successfully in this problem but it requires more computation time to a variation of computed deflection using optimized moduli value of road pavement layer based on the GA. There is a few research adopted to Artificial Neural Network (ANN) for computing deflection of the road pavement system. This article aimed to develop ANN for computing surface deflection of pavement using layer moduli and its thicknesses as input parameters. We have also discussed the solution techniques and algorithms for use in developing the program, including Burmister theory for determining deflection based on a cylindrical coordinate system, the GA optimization for back-calculating road pavement moduli, and the development of the ANN-GA model. The evaluation shows that the predicted deflections using the ANN compare well with computed deflections from the hypothetical model. Backcalculated layer moduli based on the GA-ANN model are well with a hypothetical model based on FWD test.
{"title":"A study on Artificial Neural Networks – Genetic Algorithm model and its application on back-calculation of road pavement moduli","authors":"Dinh-Viet Le, C. Phan","doi":"10.1109/ATiGB50996.2021.9423109","DOIUrl":"https://doi.org/10.1109/ATiGB50996.2021.9423109","url":null,"abstract":"Recently, Falling Weight Deflectometer (FWD) is one of the most significant testing used to measure the surface deflections under impact load subjected to circle plate which was used to back-calculating elastic moduli of the road pavement layer. Several back-calculation programs are useful for back-calculating road pavement layer moduli. A genetic algorithm (GA) was used successfully in this problem but it requires more computation time to a variation of computed deflection using optimized moduli value of road pavement layer based on the GA. There is a few research adopted to Artificial Neural Network (ANN) for computing deflection of the road pavement system. This article aimed to develop ANN for computing surface deflection of pavement using layer moduli and its thicknesses as input parameters. We have also discussed the solution techniques and algorithms for use in developing the program, including Burmister theory for determining deflection based on a cylindrical coordinate system, the GA optimization for back-calculating road pavement moduli, and the development of the ANN-GA model. The evaluation shows that the predicted deflections using the ANN compare well with computed deflections from the hypothetical model. Backcalculated layer moduli based on the GA-ANN model are well with a hypothetical model based on FWD test.","PeriodicalId":6690,"journal":{"name":"2020 Applying New Technology in Green Buildings (ATiGB)","volume":"90 1","pages":"53-59"},"PeriodicalIF":0.0,"publicationDate":"2021-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78666276","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}
Pub Date : 2021-03-12DOI: 10.1109/ATiGB50996.2021.9423316
Toan Nguyen-Sy, T. Thi, Ngoc Dung Tran Thi, Vantrang Do Thi, D. H. Hanh, Dieu Huong Le Thi, Trung Chinh Nguyen Thi, Phuc Son Nguyen Hoang, Tam Le Duc
Ultrasound has been widely applied in waste water treatment, but rarely research in agricultural soil. The present study aims to investigate effect of applying ultrasound (37Hz/30 min) in order to enhance soil mineralization in a long-term rice paddy in central Viet Nam. The result showed that soil carbohydrate content in the range of 182-437 mg kg-1, and ultrasound treatment significantly enhanced soil carbohydrate (48%) as well as carbon mineralization (43%) compared to control treatment after 4 weeks of anaerobic incubation. However, inorganic nitrogen was in the range of 19-31 mg kg-1 soil, and there were no significant changes observed in the initial inorganic and mineralized nitrogen of control and treated samples. The research demonstrated application of ultrasound could be a promised environmental friendly method to improve organic matter mineralization in soil.
{"title":"Ultrasound as a green technique to enhance soil mineralization potential","authors":"Toan Nguyen-Sy, T. Thi, Ngoc Dung Tran Thi, Vantrang Do Thi, D. H. Hanh, Dieu Huong Le Thi, Trung Chinh Nguyen Thi, Phuc Son Nguyen Hoang, Tam Le Duc","doi":"10.1109/ATiGB50996.2021.9423316","DOIUrl":"https://doi.org/10.1109/ATiGB50996.2021.9423316","url":null,"abstract":"Ultrasound has been widely applied in waste water treatment, but rarely research in agricultural soil. The present study aims to investigate effect of applying ultrasound (37Hz/30 min) in order to enhance soil mineralization in a long-term rice paddy in central Viet Nam. The result showed that soil carbohydrate content in the range of 182-437 mg kg-1, and ultrasound treatment significantly enhanced soil carbohydrate (48%) as well as carbon mineralization (43%) compared to control treatment after 4 weeks of anaerobic incubation. However, inorganic nitrogen was in the range of 19-31 mg kg-1 soil, and there were no significant changes observed in the initial inorganic and mineralized nitrogen of control and treated samples. The research demonstrated application of ultrasound could be a promised environmental friendly method to improve organic matter mineralization in soil.","PeriodicalId":6690,"journal":{"name":"2020 Applying New Technology in Green Buildings (ATiGB)","volume":"1 1","pages":"75-79"},"PeriodicalIF":0.0,"publicationDate":"2021-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86528897","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}
Pub Date : 2021-03-12DOI: 10.1109/ATiGB50996.2021.9423234
Song-Toan PHAM-PHU, M. Asari
The landfill sites in Vietnam are struggling to carry huge amounts of organic waste every day. While the domestic demand of using organic fertilizers for clean agriculture is increasing, these organic materials are disposed in a wasteful way. This study indicated that the nitrogen (N) concentration of the waste that include septic tank sludge (STS), food waste (FW) and sludge from seafood waste water treatment plant (SFS) is quite high by 965 mg/L, 34,314 mg/L and 1,756 mg/L. In this study, an Anaerobic Digester_Continuously Stirred Tank Reaction (ADCSTR) system was established to recover the N from these wastes. The ADCSTR was made of 5 mm thick tempered glass, with the dimension of the tank is H x D x R = 1,000 mm x 300 mm x 300 mm. The C/N ratio used for the ADCSTR was 25, which was identified by pre-testing seven small AD systems with different C/N ratios. The result revealed that after 50 d of anaerobic digestion, the Carbon (C) and Nitrogen (N) concentrations of liquid product was 9,628.3 mg/L and 648.5 mg/L, and the carbon to nitrogen ratio (C/N) was 11.35 as well, equivalent to 78.2 % of recovering efficiency. This study also indicated the potential to recover nutrition, produce organic fertilizer from recycling the STS, FW and SFS in Vietnam, significantly contribute to reducing waste to the disposals.
越南的垃圾填埋场每天都在努力处理大量的有机废物。虽然国内对清洁农业使用有机肥的需求正在增加，但这些有机材料的处理方式却很浪费。本研究表明，化粪池污泥(STS)、食物垃圾(FW)和海产污水处理厂污泥(SFS)的氮(N)浓度较高，分别为965 mg/L、34,314 mg/L和1,756 mg/L。本研究建立厌氧消化-连续搅拌槽反应(ADCSTR)系统，从这些废物中回收N。ADCSTR由5mm厚的钢化玻璃制成，箱体尺寸为高×深×深= 1,000 mm × 300 mm × 300 mm。用于ADCSTR的碳氮比为25，通过对7个不同碳氮比的小型AD系统进行预测试确定。结果表明，厌氧消化50 d后，液产物碳(C)和氮(N)浓度分别为9628.3 mg/L和648.5 mg/L，碳氮比(C/N)为11.35，回收率为78.2%。该研究还表明，在越南，通过回收化粪池、FW和SFS来回收营养，生产有机肥料的潜力，大大有助于减少废物的处置。
{"title":"Study on Nitrogen Recovery from Nutrient-Rich Waste by ADCSTR System","authors":"Song-Toan PHAM-PHU, M. Asari","doi":"10.1109/ATiGB50996.2021.9423234","DOIUrl":"https://doi.org/10.1109/ATiGB50996.2021.9423234","url":null,"abstract":"The landfill sites in Vietnam are struggling to carry huge amounts of organic waste every day. While the domestic demand of using organic fertilizers for clean agriculture is increasing, these organic materials are disposed in a wasteful way. This study indicated that the nitrogen (N) concentration of the waste that include septic tank sludge (STS), food waste (FW) and sludge from seafood waste water treatment plant (SFS) is quite high by 965 mg/L, 34,314 mg/L and 1,756 mg/L. In this study, an Anaerobic Digester_Continuously Stirred Tank Reaction (ADCSTR) system was established to recover the N from these wastes. The ADCSTR was made of 5 mm thick tempered glass, with the dimension of the tank is H x D x R = 1,000 mm x 300 mm x 300 mm. The C/N ratio used for the ADCSTR was 25, which was identified by pre-testing seven small AD systems with different C/N ratios. The result revealed that after 50 d of anaerobic digestion, the Carbon (C) and Nitrogen (N) concentrations of liquid product was 9,628.3 mg/L and 648.5 mg/L, and the carbon to nitrogen ratio (C/N) was 11.35 as well, equivalent to 78.2 % of recovering efficiency. This study also indicated the potential to recover nutrition, produce organic fertilizer from recycling the STS, FW and SFS in Vietnam, significantly contribute to reducing waste to the disposals.","PeriodicalId":6690,"journal":{"name":"2020 Applying New Technology in Green Buildings (ATiGB)","volume":"182 1","pages":"125-129"},"PeriodicalIF":0.0,"publicationDate":"2021-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80334494","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}
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