Process Safety and Environmental Protection最新文献_第3页

Integrating an innovative geothermal-driven multigeneration approach and LNG cold energy utilization process for sustainable energy supply, producing hydrogen, power, heating, and cooling

IF 6.9 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection

Pub Date : 2025-02-12 DOI: 10.1016/j.psep.2025.106904

Jing You , Rui Xiao , Majed A. Alotaibi , Sohaib Tahir Chauhdary , Tiancheng Ji

This study presents a novel integrated process using geothermal energy for a multigeneration energy supply program. The use of an environmentally friendly cascade heat recovery technology for the geothermal energy utilization process in integration with a LNG cold energy utilization unit to reduce the exergy destruction in a zero-emission framework is the primary innovative aspect of the current research. Therefore, for the system in question, there are four functional elements: an LNG utilization subsystem, a water electrolyzer, a single-effect chiller and a single-flash geothermal binary power plant. Hence, it is shown that under the specified operating conditions, the process can produce hydrogen, thermal energy, refrigeration as well as electrical energy. Performance of the system is assessed through simulative appraisal performance as well as conducting energetic, exergetic, economic and environmental studies with the help of the Aspen HYSYS software. Subsequently, critical operating parameters' influence on performance variables' behavior is investigated. According to the simulation, a total of 30.24 kg/h of hydrogen, 3860 kW of power, 1717 kW of cooling, and 8939 kW of heating can be generated. The evaluations considered show that the plant operates with energy and exergy efficiencies of 47.66 % and 83.22 % respectively. Moreover, the overall cost of the project and the amount of economic evaluation give the total specific cost as 288 $/h and 14.20$/GJ respectively.

{"title":"Integrating an innovative geothermal-driven multigeneration approach and LNG cold energy utilization process for sustainable energy supply, producing hydrogen, power, heating, and cooling","authors":"Jing You , Rui Xiao , Majed A. Alotaibi , Sohaib Tahir Chauhdary , Tiancheng Ji","doi":"10.1016/j.psep.2025.106904","DOIUrl":"10.1016/j.psep.2025.106904","url":null,"abstract":"<div><div>This study presents a novel integrated process using geothermal energy for a multigeneration energy supply program. The use of an environmentally friendly cascade heat recovery technology for the geothermal energy utilization process in integration with a LNG cold energy utilization unit to reduce the exergy destruction in a zero-emission framework is the primary innovative aspect of the current research. Therefore, for the system in question, there are four functional elements: an LNG utilization subsystem, a water electrolyzer, a single-effect chiller and a single-flash geothermal binary power plant. Hence, it is shown that under the specified operating conditions, the process can produce hydrogen, thermal energy, refrigeration as well as electrical energy. Performance of the system is assessed through simulative appraisal performance as well as conducting energetic, exergetic, economic and environmental studies with the help of the Aspen HYSYS software. Subsequently, critical operating parameters' influence on performance variables' behavior is investigated. According to the simulation, a total of 30.24 kg/h of hydrogen, 3860 kW of power, 1717 kW of cooling, and 8939 kW of heating can be generated. The evaluations considered show that the plant operates with energy and exergy efficiencies of 47.66 % and 83.22 % respectively. Moreover, the overall cost of the project and the amount of economic evaluation give the total specific cost as 288 $/h and 14.20$/GJ respectively.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"196 ","pages":"Article 106904"},"PeriodicalIF":6.9,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143436894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation of high-performance and environmentally friendly superfine tailings cemented paste backfill using cellulose nanofibers

IF 6.9 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection

Pub Date : 2025-02-11 DOI: 10.1016/j.psep.2025.106901

Yafei Hu , Bo Zhang , Sitao Zhu , Bin Han , Lujing Zheng , Deping Chen , Zhiyi Liu

Backfilling using solid waste technology is a prominent direction for low-carbon mining and clean production in mines. To achieve high-quality cemented backfilling using superfine tailings, renewable cellulose nanofibers (CNF) are introduced to modify superfine tailings cemented paste backfill (SCPB), and a range of experiments are implemented to comprehensively investigate the effect of CNF on key properties of SCPB, such as mechanical properties, rheological properties, microstructure, and thermal stability. The results show that a proper amount of CNF content (0.1 %) can improve mechanical properties for SCPB, and there is little difference in the enhancement effect at all curing times. Simultaneously, the huge specific surface area of cellulose nanofibers (CNF) and numerous hydroxyl functional groups contribute to increased yield stress, apparent viscosity, and thixotropic in SCPB. The microanalysis results demonstrate that CNF introduces additional nucleation sites in the SCPB hydration reaction system, promoting the generation of the Si-O-Al bond and higher-polymerized C-S-H, thus accelerating the hydration reaction. On the other hand, the filling and bridging effects of CNF can improve the compactness of SCPB and prevent microfracture expansion, which are the key factors for CNF to enhance the mechanical properties of SCPB. The kinetic study of thermal analysis shows that CNF could increase the activation energy of hydration products in SCPB, thus improving its thermal stability. The research provides new ideas for green backfilling of solid waste and efficient utilization of superfine tailings.

{"title":"Preparation of high-performance and environmentally friendly superfine tailings cemented paste backfill using cellulose nanofibers","authors":"Yafei Hu , Bo Zhang , Sitao Zhu , Bin Han , Lujing Zheng , Deping Chen , Zhiyi Liu","doi":"10.1016/j.psep.2025.106901","DOIUrl":"10.1016/j.psep.2025.106901","url":null,"abstract":"<div><div>Backfilling using solid waste technology is a prominent direction for low-carbon mining and clean production in mines. To achieve high-quality cemented backfilling using superfine tailings, renewable cellulose nanofibers (CNF) are introduced to modify superfine tailings cemented paste backfill (SCPB), and a range of experiments are implemented to comprehensively investigate the effect of CNF on key properties of SCPB, such as mechanical properties, rheological properties, microstructure, and thermal stability. The results show that a proper amount of CNF content (0.1 %) can improve mechanical properties for SCPB, and there is little difference in the enhancement effect at all curing times. Simultaneously, the huge specific surface area of cellulose nanofibers (CNF) and numerous hydroxyl functional groups contribute to increased yield stress, apparent viscosity, and thixotropic in SCPB. The microanalysis results demonstrate that CNF introduces additional nucleation sites in the SCPB hydration reaction system, promoting the generation of the Si-O-Al bond and higher-polymerized C-S-H, thus accelerating the hydration reaction. On the other hand, the filling and bridging effects of CNF can improve the compactness of SCPB and prevent microfracture expansion, which are the key factors for CNF to enhance the mechanical properties of SCPB. The kinetic study of thermal analysis shows that CNF could increase the activation energy of hydration products in SCPB, thus improving its thermal stability. The research provides new ideas for green backfilling of solid waste and efficient utilization of superfine tailings.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"196 ","pages":"Article 106901"},"PeriodicalIF":6.9,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Resource utilization strategy of Kanbara Reactor (KR) slag: Oxidation desulfurization, material cycle, low-carbon green pathway

IF 6.9 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection

Pub Date : 2025-02-11 DOI: 10.1016/j.psep.2025.106880

Xin Liu, Yan-ping Bao

The low-carbon greening of metallurgical solid waste treatment is an inevitable choice for the sustainable development of the iron and steel industry. China's desulfurization slag stock is substantial, yet there is a dearth of suitable treatment methods and secondary use technologies for desulfurization slag. The issue of desulfurization residue resource application demands prompt resolution. In this study, X-ray diffraction (XRD), X-ray fluorescence (XRF), and scanning electron microscopy with energy-dispersive spectroscopy (SEM-EDS) were employed to analyse the composition and structure of the physical phase in the slag. Additionally, thermal oxidative desulphurization was utilized to remove sulfur from the slag in the form of SO₂ and to reuse the treated slag in the desulphurization process of molten iron. The results demonstrated that the sulfur present in the desulfurization slag existed in the form of CaS in the surface layer of the slag particles. The highest desulfurization rate of slag was achieved when Fe₂O₃ was employed as the oxidant, reaching 98.43 %. The desulfurization rate of molten iron in the initial recycling of treated slag was 93.22 %, with the [%S] of the molten iron being 0.0035 %. When the treatment slag is reused, it can be recycled twice under actual production conditions. In anticipation of a novel approach to the efficient and comprehensive utilization of KR slag. The treatment slag after oxidation desulfurization is directly reused for molten iron pretreatment, the residual heat in the slag be fully utilized. It not only increases the utilization value of KR slag resources, but also reduces the consumption of slag-making materials. The process pathway has the potential to transform bulk industrial solid waste into valuable resources, thereby facilitating an environmentally friendly and low-consumption recycling of KR slag.

{"title":"Resource utilization strategy of Kanbara Reactor (KR) slag: Oxidation desulfurization, material cycle, low-carbon green pathway","authors":"Xin Liu, Yan-ping Bao","doi":"10.1016/j.psep.2025.106880","DOIUrl":"10.1016/j.psep.2025.106880","url":null,"abstract":"<div><div>The low-carbon greening of metallurgical solid waste treatment is an inevitable choice for the sustainable development of the iron and steel industry. China's desulfurization slag stock is substantial, yet there is a dearth of suitable treatment methods and secondary use technologies for desulfurization slag. The issue of desulfurization residue resource application demands prompt resolution. In this study, X-ray diffraction (XRD), X-ray fluorescence (XRF), and scanning electron microscopy with energy-dispersive spectroscopy (SEM-EDS) were employed to analyse the composition and structure of the physical phase in the slag. Additionally, thermal oxidative desulphurization was utilized to remove sulfur from the slag in the form of SO<sub>2</sub> and to reuse the treated slag in the desulphurization process of molten iron. The results demonstrated that the sulfur present in the desulfurization slag existed in the form of CaS in the surface layer of the slag particles. The highest desulfurization rate of slag was achieved when Fe<sub>2</sub>O<sub>3</sub> was employed as the oxidant, reaching 98.43 %. The desulfurization rate of molten iron in the initial recycling of treated slag was 93.22 %, with the [%S] of the molten iron being 0.0035 %. When the treatment slag is reused, it can be recycled twice under actual production conditions. In anticipation of a novel approach to the efficient and comprehensive utilization of KR slag. The treatment slag after oxidation desulfurization is directly reused for molten iron pretreatment, the residual heat in the slag be fully utilized. It not only increases the utilization value of KR slag resources, but also reduces the consumption of slag-making materials. The process pathway has the potential to transform bulk industrial solid waste into valuable resources, thereby facilitating an environmentally friendly and low-consumption recycling of KR slag.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"196 ","pages":"Article 106880"},"PeriodicalIF":6.9,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143422268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Two-stage versus single-stage anaerobic co-digestion on methane synthesis: Energy prospects and microbial community

IF 6.9 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection

Pub Date : 2025-02-11 DOI: 10.1016/j.psep.2025.106884

Kauanna Uyara Devens , Alexandre Rodrigues Ribeiro , Franciele Pereira Camargo , Isabel Kimiko Sakamoto , Maria Bernadete Amâncio Varesche , Edson Luiz Silva

Cassava processing wastewater (CW), a byproduct generated during cassava processing activities, and glycerol (Gly), a byproduct of biodiesel production processes, have a high concentration of organic matter and digestibility, which provides them with great potential for hydrogen (H₂) and methane (CH₄) generation. This study evaluated the co-digestion of cassava wastewater and glycerol in a single-stage versus two-stage process using a fluidized bed reactor (AFBR), i.e., a mesophilic acidogenic reactor (MAR) + a sequential mesophilic reactor (SMR) and a mesophilic methanogenic reactor (MMR), operated at mesophilic temperature (30°C). Thus, the effect of increasing the organic matter concentration of 1–12.5 g [chemical oxygen demand] COD.L⁻¹ (50 %:50 % on a COD basis) on CH₄ production was verified. Co-digestion consistently yielded methane production in both single and two-stage processes. The two-stage process stood out as the single stage, providing a maximum CH₄ Yield (MY) of 341.10 mL CH₄. gCOD⁻¹_cons and CH₄ production rate (MPR) of 168.23 mL of CH₄.L⁻¹.h⁻¹, respectively. Regarding the microbial community, the methanogens Methanobacterium and Methanobrevibacter prevailed. Moreover, the two-stage and single-stage presented energy potentials of 161.23 kJ.d⁻¹ and 54.26 kJ.d⁻¹, in that order. Upon comparative analysis of the performance between two-stage and single-stage methanogenic reactors, it becomes apparent that the co-digestion of CW and Gly in a two-stage configuration exhibited enhancements over the single-stage.

{"title":"Two-stage versus single-stage anaerobic co-digestion on methane synthesis: Energy prospects and microbial community","authors":"Kauanna Uyara Devens , Alexandre Rodrigues Ribeiro , Franciele Pereira Camargo , Isabel Kimiko Sakamoto , Maria Bernadete Amâncio Varesche , Edson Luiz Silva","doi":"10.1016/j.psep.2025.106884","DOIUrl":"10.1016/j.psep.2025.106884","url":null,"abstract":"<div><div>Cassava processing wastewater (CW), a byproduct generated during cassava processing activities, and glycerol (Gly), a byproduct of biodiesel production processes, have a high concentration of organic matter and digestibility, which provides them with great potential for hydrogen (H<sub>2</sub>) and methane (CH<sub>4</sub>) generation. This study evaluated the co-digestion of cassava wastewater and glycerol in a single-stage versus two-stage process using a fluidized bed reactor (AFBR), i.e., a mesophilic acidogenic reactor (MAR) + a sequential mesophilic reactor (SMR) and a mesophilic methanogenic reactor (MMR), operated at mesophilic temperature (30°C). Thus, the effect of increasing the organic matter concentration of 1–12.5 g [chemical oxygen demand] COD.L<sup>−1</sup> (50 %:50 % on a COD basis) on CH<sub>4</sub> production was verified. Co-digestion consistently yielded methane production in both single and two-stage processes. The two-stage process stood out as the single stage, providing a maximum CH<sub>4</sub> Yield (MY) of 341.10 mL CH<sub>4</sub>. gCOD<sup>−1</sup><sub>cons</sub> and CH<sub>4</sub> production rate (MPR) of 168.23 mL of CH<sub>4</sub>.L<sup>−1</sup>.h<sup>−1</sup>, respectively. Regarding the microbial community, the methanogens <em>Methanobacterium</em> and <em>Methanobrevibacter</em> prevailed. Moreover, the two-stage and single-stage presented energy potentials of 161.23 kJ.d<sup>−1</sup> and 54.26 kJ.d<sup>−1</sup>, in that order. Upon comparative analysis of the performance between two-stage and single-stage methanogenic reactors, it becomes apparent that the co-digestion of CW and Gly in a two-stage configuration exhibited enhancements over the single-stage.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"196 ","pages":"Article 106884"},"PeriodicalIF":6.9,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sustainable fuel production from waste ship oil sludge: A comprehensive technical and socio-economic analysis towards zero-waste discharge

IF 6.9 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection

Pub Date : 2025-02-11 DOI: 10.1016/j.psep.2025.106888

K.B. Sasidhar , Somasundaram Murugavelh , Porpatham Ekambaram , Senthil Kumar Arumugam

Waste ship oil sludge (WSOS) is a classified hazardous waste as it is detrimental to the environment. This work hopes to upcycle the waste as a renewable fuel and optimize its yield. The thermal degradation of WSOS was studied at various heating rates ranging from 5 – 30 °C.min⁻¹ to identify the activation energy and frequency factor. A response surface model for a temperature range 300 – 800 °C, a heating rate of 5 – 40 °C.min⁻¹, and a holding time of 30 – 120 min was used. The central composite design indicated temperature of 550 °C, heating rate of 22.5 °C.min⁻¹, and retention time of 30 min as the optimum operating parameters for WSOS upcycling with a corresponding oil yield of 56.65 %. The fuel properties of the upcycled fuel indicated that the fuel was on par with commercial diesel. A techno-economic analysis indicated a payback period of less than 11 months and the safety index for the process was 4 indicating safe operation. The produced pyro-oil was observed to reduce 1134 kg CO₂ per annum. A positive NPV and a high IRR of 79 % indicated that the commercial sale of this pyro-oil as a renewable fuel would be economically feasible.

{"title":"Sustainable fuel production from waste ship oil sludge: A comprehensive technical and socio-economic analysis towards zero-waste discharge","authors":"K.B. Sasidhar , Somasundaram Murugavelh , Porpatham Ekambaram , Senthil Kumar Arumugam","doi":"10.1016/j.psep.2025.106888","DOIUrl":"10.1016/j.psep.2025.106888","url":null,"abstract":"<div><div>Waste ship oil sludge (WSOS) is a classified hazardous waste as it is detrimental to the environment. This work hopes to upcycle the waste as a renewable fuel and optimize its yield. The thermal degradation of WSOS was studied at various heating rates ranging from 5 – 30 °C.min<sup>−1</sup> to identify the activation energy and frequency factor. A response surface model for a temperature range 300 – 800 °C, a heating rate of 5 – 40 °C.min<sup>−1</sup>, and a holding time of 30 – 120 min was used. The central composite design indicated temperature of 550 °C, heating rate of 22.5 °C.min<sup>−1</sup>, and retention time of 30 min as the optimum operating parameters for WSOS upcycling with a corresponding oil yield of 56.65 %. The fuel properties of the upcycled fuel indicated that the fuel was on par with commercial diesel. A techno-economic analysis indicated a payback period of less than 11 months and the safety index for the process was 4 indicating safe operation. The produced pyro-oil was observed to reduce 1134 kg CO<sub>2</sub> per annum. A positive NPV and a high IRR of 79 % indicated that the commercial sale of this pyro-oil as a renewable fuel would be economically feasible.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"196 ","pages":"Article 106888"},"PeriodicalIF":6.9,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143418560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Predicting aqueous-phase hydroxyl radical reaction kinetics with organic compounds in water, atmosphere, and biological systems

IF 6.9 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection

Pub Date : 2025-02-10 DOI: 10.1016/j.psep.2025.106876

Mohammad Hossein Keshavarz, Zeinab Shirazi, Mohammad Jafari, Seyedeh Masoumeh Jorfi Shanani

The hydroxyl radical (HO·) acts as a reactive electrophile, playing crucial roles in water, the atmosphere, and biological systems. In this study, an interpretable model that employs six structural descriptors assesses the second-order rate constants (k_HO·) for various classes of organic compounds with diverse functional groups. The training dataset comprises measured k_HO· values at 25°C in the aqueous phase for over 1000 organic compounds including 876 data points of the training set, while the test (101 data points) and validation (110 data points) sets contribute to the development of the new models. The second-order rate constant model is based on the interaction of the HO· radical with different atoms and functional groups. To account for significant deviations in predicted results, an additional variable is introduced into the core model, resulting in an improved version. The calculated data from the enhanced model are compared with the outputs of a combined molecular fingerprint-machine learning complex method, considered the best available general approach. For the test set, the ratios of the maximum absolute error (AE_max), the average absolute error (AAE), R², and root mean square error (RMSE) between the improved model and the comparative method are as follows: 0.767/0.806, 0.213/0.222, 0.7197/0.6716, and 0.263/0.294, respectively. These ratios exhibit consistent trends in the validation set: 0.856/1.11, 0.207/0.226, 0.270/0.302, and 0.7830/0.7346 for AE_max, AAE, RMSE, and R², respectively. The reliability of the improved and interpretable model surpasses that of the comparative complex method when applied to new organic compounds not utilized in deriving the model.

{"title":"Predicting aqueous-phase hydroxyl radical reaction kinetics with organic compounds in water, atmosphere, and biological systems","authors":"Mohammad Hossein Keshavarz, Zeinab Shirazi, Mohammad Jafari, Seyedeh Masoumeh Jorfi Shanani","doi":"10.1016/j.psep.2025.106876","DOIUrl":"10.1016/j.psep.2025.106876","url":null,"abstract":"<div><div>The hydroxyl radical (HO·) acts as a reactive electrophile, playing crucial roles in water, the atmosphere, and biological systems. In this study, an interpretable model that employs six structural descriptors assesses the second-order rate constants (<em>k</em><sub><em>HO</em></sub>·) for various classes of organic compounds with diverse functional groups. The training dataset comprises measured <em>k</em><sub><em>HO</em></sub>· values at 25°C in the aqueous phase for over 1000 organic compounds including 876 data points of the training set, while the test (101 data points) and validation (110 data points) sets contribute to the development of the new models. The second-order rate constant model is based on the interaction of the HO· radical with different atoms and functional groups. To account for significant deviations in predicted results, an additional variable is introduced into the core model, resulting in an improved version. The calculated data from the enhanced model are compared with the outputs of a combined molecular fingerprint-machine learning complex method, considered the best available general approach. For the test set, the ratios of the maximum absolute error (AE<sub>max</sub>), the average absolute error (AAE), R<sup>2</sup>, and root mean square error (RMSE) between the improved model and the comparative method are as follows: 0.767/0.806, 0.213/0.222, 0.7197/0.6716, and 0.263/0.294, respectively. These ratios exhibit consistent trends in the validation set: 0.856/1.11, 0.207/0.226, 0.270/0.302, and 0.7830/0.7346 for AE<sub>max</sub>, AAE, RMSE, and R<sup>2</sup>, respectively. The reliability of the improved and interpretable model surpasses that of the comparative complex method when applied to new organic compounds not utilized in deriving the model.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"196 ","pages":"Article 106876"},"PeriodicalIF":6.9,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143394332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization of a liquid injection NH3/CO2 cascade refrigeration system. Energetic, exergetic and environmental assessment

IF 6.9 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection

Pub Date : 2025-02-09 DOI: 10.1016/j.psep.2025.106862

Malek Hamzaoui , Ali Grine , Samir Tiachacht , Hani Beltagy

This article presents an in-depth numerical study on optimizing the operation of a liquid-injection cascade refrigeration system. The main objective is to determine the optimal operating point that maximizes the COP within the temperature ranges of 30°C <T_C< 60°C and −55°C<T_E< -30°C. A comprehensive mathematical model was developed to simulate the thermodynamic behavior of the system, taking into account the liquid injection processes. Optimization, based on a bio-inspired metaheuristic algorithm (Puma), was used to determine the optimal operating parameters, such as T_3L, the injection pressures and flow rates. The results show that liquid injection significantly improves system performance by reducing energy consumption, exergy destruction, and compressor discharge temperature. Additionally, an environmental analysis based on the Total Equivalent Warming Impact (TEWI) was conducted to assess the environmental impact of the system. The results show that the optimized system has a lower TEWI compared to conventional systems, highlighting its potential for reducing greenhouse gas emissions. Finally, correlations providing T₃_L, injection pressures, flow ratios, and optimal COPs are provided to give valuable information for the design and operation of more efficient and environmentally friendly liquid-injection cascade refrigeration systems.

{"title":"Optimization of a liquid injection NH3/CO2 cascade refrigeration system. Energetic, exergetic and environmental assessment","authors":"Malek Hamzaoui , Ali Grine , Samir Tiachacht , Hani Beltagy","doi":"10.1016/j.psep.2025.106862","DOIUrl":"10.1016/j.psep.2025.106862","url":null,"abstract":"<div><div>This article presents an in-depth numerical study on optimizing the operation of a liquid-injection cascade refrigeration system. The main objective is to determine the optimal operating point that maximizes the COP within the temperature ranges of 30°C <T<sub>C</sub>< 60°C and −55°C<T<sub>E</sub>< -30°C. A comprehensive mathematical model was developed to simulate the thermodynamic behavior of the system, taking into account the liquid injection processes. Optimization, based on a bio-inspired metaheuristic algorithm (Puma), was used to determine the optimal operating parameters, such as T<sub>3L</sub>, the injection pressures and flow rates. The results show that liquid injection significantly improves system performance by reducing energy consumption, exergy destruction, and compressor discharge temperature. Additionally, an environmental analysis based on the Total Equivalent Warming Impact (TEWI) was conducted to assess the environmental impact of the system. The results show that the optimized system has a lower TEWI compared to conventional systems, highlighting its potential for reducing greenhouse gas emissions. Finally, correlations providing T<sub>3</sub><sub>L</sub>, injection pressures, flow ratios, and optimal COPs are provided to give valuable information for the design and operation of more efficient and environmentally friendly liquid-injection cascade refrigeration systems.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"196 ","pages":"Article 106862"},"PeriodicalIF":6.9,"publicationDate":"2025-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A dual-channel signals-based method for pipeline leak detection by signal reconstruction and deep feature fusion

IF 6.9 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection

Pub Date : 2025-02-09 DOI: 10.1016/j.psep.2025.106881

Zheyi Zhang , Weihua Cao , Wenkai Hu , Min Wu

Accurate detection of pipeline leaks is crucial for the stable operation of urban natural gas pipelines. Pipelines are typically situated in complex environments, and most leak detection methods rely solely on data from a single type of sensor. Due to the impact of environmental noise and the inability of a single type of sensor to comprehensively describe the operational state of pipelines, these methods often have high false detection rates. Accordingly, this paper proposes a dual-channel signals-based method for pipeline leak detection by signal reconstruction and deep feature fusion. The contributions are two fold: First, a Variational Mode Decomposition with Dual Signals Dynamic Time Warping (VMD-DSDTW) method is designed for signal reconstruction and noise removal of the dual-channel signals. Second, an AutoEncoder based Feature Fusion Convolutional Neural Network (AE-FFCNN) method is devised for dual-channel signals information fusion and pipeline leak detection. The proposed method was tested based on data extracted from an experimental platform, and the results demonstrated the superior performance of the proposed method by comparison with other state-of-the-art methods.

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引用次数: 0

Pioneering adsorption-based technological advancements in Ibuprofen remediation: A critical evaluation

IF 6.9 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection

Pub Date : 2025-02-08 DOI: 10.1016/j.psep.2025.106874

Debanjan Dey , Priyanka Khan , Rupsa Biswas , Shouvik Saha , Gopinath Halder

Frequent use of ibuprofen (IBP) in the human healthcare system causes its infiltration and long-term persistence into the water systems, creating global concern for the well-being of human health and the ecosystem. Remediation of IBP becomes imperative to limit its unreceptive impacts. Adsorption emerges as an efficient remediation technique among various conventional wastewater treatment methods to limit the menace of this pervasive pollutant. Various adsorbents and their hybrid derivatives exhibited selective efficacy to IBP and remediated it efficiently through optimized adsorption processes. Nevertheless, selecting an efficient, environmentally benign, and regenerative adsorbent is pivotal to combat the ecological persistence of IBP and the economic viability of the adsorption process. This review article comprehensively evaluates the sorptive uptake of IBP by different adsorbents, critically analyzes their sorption mechanisms for IBP through various adsorption isotherm and kinetics models, and the impact of different reaction parameters on IBP sorption. A few hybridized techniques were suggested for an economically viable adsorption-based IBP remediation method implementation in wastewater treatment facilities for its eradication.

{"title":"Pioneering adsorption-based technological advancements in Ibuprofen remediation: A critical evaluation","authors":"Debanjan Dey , Priyanka Khan , Rupsa Biswas , Shouvik Saha , Gopinath Halder","doi":"10.1016/j.psep.2025.106874","DOIUrl":"10.1016/j.psep.2025.106874","url":null,"abstract":"<div><div>Frequent use of ibuprofen (IBP) in the human healthcare system causes its infiltration and long-term persistence into the water systems, creating global concern for the well-being of human health and the ecosystem. Remediation of IBP becomes imperative to limit its unreceptive impacts. Adsorption emerges as an efficient remediation technique among various conventional wastewater treatment methods to limit the menace of this pervasive pollutant. Various adsorbents and their hybrid derivatives exhibited selective efficacy to IBP and remediated it efficiently through optimized adsorption processes. Nevertheless, selecting an efficient, environmentally benign, and regenerative adsorbent is pivotal to combat the ecological persistence of IBP and the economic viability of the adsorption process. This review article comprehensively evaluates the sorptive uptake of IBP by different adsorbents, critically analyzes their sorption mechanisms for IBP through various adsorption isotherm and kinetics models, and the impact of different reaction parameters on IBP sorption. A few hybridized techniques were suggested for an economically viable adsorption-based IBP remediation method implementation in wastewater treatment facilities for its eradication.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"196 ","pages":"Article 106874"},"PeriodicalIF":6.9,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143394092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Innovative N-butyryl-L-homoserine lactones-assisted strategy for phytoremediation: Improving soybean growth and soil quality in dimethyl phthalate remediation

IF 6.9 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection

Pub Date : 2025-02-08 DOI: 10.1016/j.psep.2025.106882

Fenyan Chen, Wenqing Zhou, Lihua Qi, Jingjing Yang, Zhiman Li, Xiaoge Zhang, Yalan Zhu, Chunfeng Guan

The excessive accumulation of dimethyl phthalate (DMP) in soil exerts tremendous pressure on soil ecosystems and human health. This study explored the feasibility of using bacterial quorum sensing signal molecules, N-acyl-homoserine lactones (AHLs), to enhance phytoremediation of DMP contaminated soil. The effects of N-butyryl-_L-homoserine lactone (C₄-HSL) on soybean (Glycine max L.) physiology and phytoremediation efficiency were assessed. Results indicated that C₄-HSL significantly promoted the efficiency of soybean in remediating DMP contaminated soil, achieving an 87.40 % DMP removal efficiency after 28 d cultivation. Applying C₄-HSL significantly enhanced soybean photosynthetic by the potential promotion of chlorophyll synthesis and bolstered the antioxidant with a notable reduction in malondialdehyde content. The presence of C₄-HSL also stimulated plant growth and improved soil enzymatic activities, likely aiding in nutrient cycling and pollutant degradation in soil. Moreover, C₄-HSL modified the bacterial community, increasing the relative abundance of bacteria related to DMP degradation (Proteobacteria, Actinobacteria) and plant growth promotion (Micromonosporales, Sphingomonadaceae). In general, this study proposed that AHLs-assisted phytoremediation offers a promising, eco-friendly strategy for DMP remediation. This approach provides economic and ecological benefits while reducing damage to soybeans and lays the groundwork for practical applications in agriculture.

{"title":"Innovative N-butyryl-L-homoserine lactones-assisted strategy for phytoremediation: Improving soybean growth and soil quality in dimethyl phthalate remediation","authors":"Fenyan Chen, Wenqing Zhou, Lihua Qi, Jingjing Yang, Zhiman Li, Xiaoge Zhang, Yalan Zhu, Chunfeng Guan","doi":"10.1016/j.psep.2025.106882","DOIUrl":"10.1016/j.psep.2025.106882","url":null,"abstract":"<div><div>The excessive accumulation of dimethyl phthalate (DMP) in soil exerts tremendous pressure on soil ecosystems and human health. This study explored the feasibility of using bacterial quorum sensing signal molecules, <em>N</em>-acyl-homoserine lactones (AHLs), to enhance phytoremediation of DMP contaminated soil. The effects of <em>N</em>-butyryl-<sub>L</sub>-homoserine lactone (C<sub>4</sub>-HSL) on soybean (<em>Glycine max</em> L.) physiology and phytoremediation efficiency were assessed. Results indicated that C<sub>4</sub>-HSL significantly promoted the efficiency of soybean in remediating DMP contaminated soil, achieving an 87.40 % DMP removal efficiency after 28 d cultivation. Applying C<sub>4</sub>-HSL significantly enhanced soybean photosynthetic by the potential promotion of chlorophyll synthesis and bolstered the antioxidant with a notable reduction in malondialdehyde content. The presence of C<sub>4</sub>-HSL also stimulated plant growth and improved soil enzymatic activities, likely aiding in nutrient cycling and pollutant degradation in soil. Moreover, C<sub>4</sub>-HSL modified the bacterial community, increasing the relative abundance of bacteria related to DMP degradation (Proteobacteria, Actinobacteria) and plant growth promotion (Micromonosporales, Sphingomonadaceae). In general, this study proposed that AHLs-assisted phytoremediation offers a promising, eco-friendly strategy for DMP remediation. This approach provides economic and ecological benefits while reducing damage to soybeans and lays the groundwork for practical applications in agriculture.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"196 ","pages":"Article 106882"},"PeriodicalIF":6.9,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143376926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0