Process Safety and Environmental Protection最新文献_第8页

Treatment of arsenic-containing wastewater using lepidolite delithiation residue: Adsorption behavior and mechanism 锂云母脱硫渣处理含砷废水：吸附行为及机理

IF 7.9 2区环境科学与生态学

Process Safety and Environmental Protection Pub Date : 2026-07-15 Epub Date: 2026-06-15 DOI: 10.1016/j.psep.2026.109150

Ju Luo, Hua Long, Yixiang Cai, Ningjing Liu, Shuanghua Zhang, Changya Chen, Hong Qin, Yantao Li

{"title":"Treatment of arsenic-containing wastewater using lepidolite delithiation residue: Adsorption behavior and mechanism","authors":"Ju Luo, Hua Long, Yixiang Cai, Ningjing Liu, Shuanghua Zhang, Changya Chen, Hong Qin, Yantao Li","doi":"10.1016/j.psep.2026.109150","DOIUrl":"10.1016/j.psep.2026.109150","url":null,"abstract":"<div><div>The adsorption method is an important technical means for treating arsenic pollution in water bodies. In this study, the delithiation residue (DR) of lepidolite was employed to treat low-concentration As(V)-containing wastewater, and its adsorption behavior and underlying removal mechanisms were investigated. The removal efficiency of arsenic could exceed 99.0% under optimized conditions, and the residual arsenic concentration was no higher than 0.3 mg/L. Kinetic and thermodynamic analyses indicated that the removal of As(V) was predominantly governed by chemical adsorption, while physical adsorption also occurred, and the adsorption process was endothermic. According to the intraparticle diffusion model, adsorption took place in two sequential phases: surface diffusion and internal diffusion. The adsorption of As(V) using DR better conformed to the Langmuir and Sips isothermal models, which indicated single-layer adsorption on the heterogeneous surface, and As(V) was relatively easy to be adsorbed. The removal of As(V) by DR is mainly based on coordination interaction, while there is also a small amount of electrostatic attraction and mesoporous adsorption. Employing the DR for the treatment of arsenic-containing wastewater can not only effectively remove arsenic but also enhance the utilization of DR, thus realizing the treatment of waste with waste.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"215 ","pages":"Article 109150"},"PeriodicalIF":7.9,"publicationDate":"2026-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148289004","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

Melt vitrification of washed and unwashed municipal solid waste incineration fly ash: Product stability, metal migration, and process burden 熔融玻璃化的洗涤和未洗涤的城市固体垃圾焚烧飞灰：产品稳定性，金属迁移，和过程负担

IF 7.9 2区环境科学与生态学

Process Safety and Environmental Protection Pub Date : 2026-07-15 Epub Date: 2026-06-16 DOI: 10.1016/j.psep.2026.109167

Huikang Song, Yaji Huang, Sheng Wang, Hao Shi, Tianhang Tang, Hao Liu, Daiyang Li, Chenlu Yang, Shengli Song

{"title":"Melt vitrification of washed and unwashed municipal solid waste incineration fly ash: Product stability, metal migration, and process burden","authors":"Huikang Song, Yaji Huang, Sheng Wang, Hao Shi, Tianhang Tang, Hao Liu, Daiyang Li, Chenlu Yang, Shengli Song","doi":"10.1016/j.psep.2026.109167","DOIUrl":"10.1016/j.psep.2026.109167","url":null,"abstract":"<div><div>Water washing is commonly used before vitrifying municipal solid waste incineration (MSWI) fly ash, but its necessity remains uncertain. This study compared raw MSWI fly ash (MFA) and water-washed fly ash (WFA) co-vitrified with coal fly ash (CFA), integrating glass formation, leaching compliance, metal migration, and costs. Washing removed salts and reduced Pb leaching from 19.49 to 7.15 mg L⁻¹ , but WFA exceeded the hazardous-waste threshold. WFA–CFA achieved a compliant window at 1150 °C with 30–40 wt% CFA, whereas MFA–CFA showed only an isolated compliant condition near 25 wt% CFA at 1150 °C but a broader window at 1200 °C with 20–40 wt% CFA. Cr was the limiting element: its release persisted in some highly vitrified MFA–CFA products at 1150 °C but was suppressed at 1200 °C. Back-addition tests linked Cr release to CaSO₄ sentinel signatures, suggesting that Ca/S-rich residual heterogeneity and incomplete melt homogenization can weaken Cr immobilization. Chlorides promoted liquid formation but intensified Pb/Cd/Zn/Cu volatilization. Unwashed 1200 °C treatment showed lower baseline cost than washed 1150 °C treatment. Overall, washing broadened the medium-temperature window but shifted salts to liquid-phase management, whereas direct vitrification offered a shorter route with greater off-gas and corrosion-control demands.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"215 ","pages":"Article 109167"},"PeriodicalIF":7.9,"publicationDate":"2026-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148289120","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

Integrated analysis of iron dust explosions in a 20-L sphere: Mass and heat balance analysis combined with gas–particle dispersion modelling 20 l球内铁尘爆炸的综合分析：质量和热平衡分析与气体-颗粒分散模型相结合

IF 7.9 2区环境科学与生态学

Process Safety and Environmental Protection Pub Date : 2026-07-15 Epub Date: 2026-06-08 DOI: 10.1016/j.psep.2026.109120

Aleksandra Semenova, Christoph Spijker

{"title":"Integrated analysis of iron dust explosions in a 20-L sphere: Mass and heat balance analysis combined with gas–particle dispersion modelling","authors":"Aleksandra Semenova, Christoph Spijker","doi":"10.1016/j.psep.2026.109120","DOIUrl":"10.1016/j.psep.2026.109120","url":null,"abstract":"<div><div>The transition to hydrogen-based metallurgy and iron-based energy carriers introduces explosion hazards associated with fine iron dust. However, standardized 20-L tests may not capture the true iron explosion severity, as Pₘₐₓ occurs at ≥ 1500 g/m³ , exceeding the vessel’s oxygen capacity (∼660–990 g/m³). To resolve this discrepancy, oxygen consumption after the explosion was quantified, allowing a comparison between stoichiometric and pressure-based heat release. The results show that both pressure and oxygen consumption increase between 500 and 1000 g/m³ and then plateau at ≥ 1500 g/m³ (∼3.8 bar, 92–99%), indicating oxygen-limited conditions. The calculated stoichiometric heat release exceeds the pressure-derived heat release. This quantifies significant heat losses in the 20-L apparatus. Despite oxygen depletion, pressure-based heat release continues to increase approximately linearly. This suggests that only a fraction of the nominal dust mass participates in the process, which explains why no significant heat sink effect is observed. CFD simulations further support this assumption by revealing incomplete dust injection with material being trapped in the valve. The overpressure–concentration model developed in this study, which is based on measured oxygen consumption, demonstrates higher values (around 5.6 bar) and a shift in the maximum overpressure to around 1000 g/m³ , as well as a decline at higher loadings. These results provide an upper-bound (worst-case) estimate of explosion severity that is not captured by standard 20-L measurements. Together, these findings demonstrate that standard 20-L sphere measurements do not accurately reflect the true Pₘₐₓ for iron-based dusts, highlighting the need for improved dispersion systems and revised testing methodologies.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"215 ","pages":"Article 109120"},"PeriodicalIF":7.9,"publicationDate":"2026-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148289145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental study on the thermodynamic response characteristics of superheated liquid under explosive boiling 爆炸沸腾下过热液体热力学响应特性的实验研究

IF 7.9 2区环境科学与生态学

Process Safety and Environmental Protection Pub Date : 2026-07-15 Epub Date: 2026-06-22 DOI: 10.1016/j.psep.2026.109189

Jianlei Zhang, Xinao Wang, Di Yu, Qiangqiang Hao, Jingjing Yang, Jingjie Ren, Mingshu Bi

{"title":"Experimental study on the thermodynamic response characteristics of superheated liquid under explosive boiling","authors":"Jianlei Zhang, Xinao Wang, Di Yu, Qiangqiang Hao, Jingjing Yang, Jingjie Ren, Mingshu Bi","doi":"10.1016/j.psep.2026.109189","DOIUrl":"10.1016/j.psep.2026.109189","url":null,"abstract":"<div><div>To investigate the thermodynamic response of superheated liquid during rapid depressurization, explosive boiling experiments are conducted in a 3.5 L visualization vessel using R134a as the working fluid. The effects of vent diameter, initial pressure, and filling ratio on the thermodynamic response characteristics during explosive boiling are systematically analyzed. The results show that a larger vent diameter, higher initial pressure, and higher filling ratio promote more violent two-phase flow evolution, greater liquid thermal energy release, larger flash mass, and stronger pressure rebound during explosive boiling. The lower temperature drop rate at higher filling ratios does not indicate weaker explosive boiling, but is mainly attributed to the larger liquid mass and greater overall heat capacity. The introduced maximum liquid thermal energy release rate increases with the initial conditions, showing a trend consistent with cumulative flash mass. This indicates that greater liquid thermal energy release promotes vapor generation and contributes to pressure rebound. Quantitatively, when the vent diameter, initial pressure, and filling ratio increase over the tested ranges of 5–20 mm, 9.5–11.5 bar, and 0.5–0.75, respectively, the pressure rebound value (Δ<em>P</em><sub>rebound</sub>) increases by 2.5 bar, 0.5 bar, and 0.76 bar. These quantitative results further support the establishment of an empirical correlation between the initial conditions and the pressure rebound value. These findings clarify the thermodynamic coupling during explosive boiling and contribute to a better understanding of BLEVE internal hazards.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"215 ","pages":"Article 109189"},"PeriodicalIF":7.9,"publicationDate":"2026-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148313195","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

Al@PTFE composite powder explosion characteristics Al@PTFE复合粉末爆炸特性

IF 7.9 2区环境科学与生态学

Process Safety and Environmental Protection Pub Date : 2026-07-15 Epub Date: 2026-06-22 DOI: 10.1016/j.psep.2026.109187

Bin Yan, Xueyong Guo, Qi Zhang

{"title":"Al@PTFE composite powder explosion characteristics","authors":"Bin Yan, Xueyong Guo, Qi Zhang","doi":"10.1016/j.psep.2026.109187","DOIUrl":"10.1016/j.psep.2026.109187","url":null,"abstract":"<div><div>Polytetrafluoroethylene (PTFE)-coated aluminum (Al) powder, denoted as Al@PTFE powder, combines the high energy density of Al with the unique reactivity of PTFE, making its explosion hazard a critical safety concern. In this study, a numerical model for Al@PTFE powder explosions was developed using computational fluid dynamics and combustion theory to characterize their transient explosion dynamics. The results show that, with increasing Al@PTFE powder concentration, the maximum explosion pressure (<em>P</em><sub>max</sub>) and the maximum rate of pressure rise ((d<em>P</em>/d<em>t</em>)<sub>max</sub>) initially increased and then decreased, reaching peak values of 0.802 MPa and 556 MPa/s, respectively, at 300 g/m³ . Similarly, as the PTFE coating ratio increased, <em>P</em><sub>max</sub> and (d<em>P</em>/d<em>t</em>)<sub>max</sub> exhibited the same non-monotonic trend, attaining maximum values of 0.755 MPa and 406 MPa/s, respectively, at a coating ratio of 5%. Furthermore, the dynamic evolution and propagation characteristics of the flame, combustion products, and temperature field were analyzed to elucidate the mechanism by which PTFE regulates the explosion behavior of Al powder. These findings provide useful guidance for the safe application of Al@PTFE powder and the prevention and mitigation of related explosion accidents.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"215 ","pages":"Article 109187"},"PeriodicalIF":7.9,"publicationDate":"2026-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148313196","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

Enhanced carbon chain elongation by carbon-iron composites: Role of mediated electron transfer and synergistic effects 碳-铁复合材料增强碳链延伸：介导的电子转移和协同效应的作用

IF 7.9 2区环境科学与生态学

Process Safety and Environmental Protection Pub Date : 2026-07-15 Epub Date: 2026-06-25 DOI: 10.1016/j.psep.2026.109205

Yingchun Kou, Renqing Cao, Jiale Liu, Zhifang Ning, Weizhang Zhong, Xue Qin, Yali Huang, Changxiong Zhu

{"title":"Enhanced carbon chain elongation by carbon-iron composites: Role of mediated electron transfer and synergistic effects","authors":"Yingchun Kou, Renqing Cao, Jiale Liu, Zhifang Ning, Weizhang Zhong, Xue Qin, Yali Huang, Changxiong Zhu","doi":"10.1016/j.psep.2026.109205","DOIUrl":"10.1016/j.psep.2026.109205","url":null,"abstract":"<div><div>Carbon materials and iron materials individually promote carbon-chain elongation (CCE), but their synergy and the causal role of electron transfer remain unclear. This study investigated whether carbon-iron (AC[Fe]) composites enhance CCE via electron transfer. Composites were synthesized at C/Fe ratios of 5:1, 1:1, and 1:5, and AC[Fe] (5:1, 10 g·L<sup>−1</sup>) was identified as optimal. This composite alleviated iron particle aggregation and enhanced electrochemical activity, achieving a caproate titer of 11787.3 mg·L<sup>−1</sup>, a 101.5% increase relative to the control. Metagenomic analysis revealed enrichment of chain-elongating bacteria (<em>Oscillibacter ruminantium</em>, <em>Rummeliibacillus suwonensis</em>) and increased abundance of genes encoding reverse β-oxidation and electron transfer components (cytochromes, e-pili, flavoproteins). Unlike previous studies relying primarily on gene abundance correlations, this study used an electron transport chain inhibitor for causal testing: inhibition reduced caproate by 81.3%, and subsequent AC[Fe]5:1 addition restored 25.6% of the loss, providing multi-faceted support for AC[Fe]-mediated electron transfer in CCE. This study achieved synergistic enhancement beyond individual materials by optimizing the C/Fe ratio, and supported the key role of AC[Fe] in mediating electron transfer in CCE, offering a new theoretical and experimental basis for efficient caproate bioproduction.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"215 ","pages":"Article 109205"},"PeriodicalIF":7.9,"publicationDate":"2026-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148357173","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

Recycling Ca-Rich fly ash for calcium carbonate recovery through fluidized-bed homogeneous crystallization technology 利用流化床均匀结晶技术回收富钙粉煤灰回收碳酸钙

IF 7.9 2区环境科学与生态学

Process Safety and Environmental Protection Pub Date : 2026-07-15 Epub Date: 2026-06-24 DOI: 10.1016/j.psep.2026.109114

Po-Yang Lu, Thi-Hanh Ha, Angelo Earvin Sy Choi, Ming-Chun Lu

{"title":"Recycling Ca-Rich fly ash for calcium carbonate recovery through fluidized-bed homogeneous crystallization technology","authors":"Po-Yang Lu, Thi-Hanh Ha, Angelo Earvin Sy Choi, Ming-Chun Lu","doi":"10.1016/j.psep.2026.109114","DOIUrl":"10.1016/j.psep.2026.109114","url":null,"abstract":"<div><div>Fly ash slag (FA), a byproduct of municipal solid waste incineration, offers significant potential as a secondary source for calcium recovery. This study evaluates the application of a fluidized-bed homogeneous crystallization (FBHC) system to convert dissolved calcium in FA leachate into precipitated calcium carbonate (PCC). The influence of key parameters, including pH, Ca²⁺/CO₃²⁻ molar ratio, up-flow velocity, and carbonate source, was systematically examined to improve calcium conversion and crystal development. Optimal conditions (pH 9.0, Ca²⁺/CO₃²⁻ = 1.0, initial Ca²⁺ concentration of 0.096–0.12 M, and up-flow velocity of 57.3 m/h using K₂CO₃) enabled calcium recovery above 98%. The process produced uniform calcite granules (>0.1 mm) with high purity and minimal heavy-metal content (<1%), meeting industrial-grade specifications. Compared with conventional precipitation, the FBHC system facilitated the formation of dense, low-moisture particles, improving solid–liquid separation and reducing sludge generation. These results demonstrate that FBHC provides a viable route for calcium recovery from FA, supporting circular resource utilization in waste-to-resource systems.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"215 ","pages":"Article 109114"},"PeriodicalIF":7.9,"publicationDate":"2026-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148357176","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

Artificial intelligence for climate change mitigation and adaptation: A domain-structured review of methods, applications, and research gaps for seven high-impact domains 缓解和适应气候变化的人工智能：对七个高影响领域的方法、应用和研究差距的领域结构审查

IF 7.9 2区环境科学与生态学

Process Safety and Environmental Protection Pub Date : 2026-07-15 Epub Date: 2026-06-13 DOI: 10.1016/j.psep.2026.109102

L. Minh Dang, Sufyan Danish, Muhammad Fayaz, Gul E. Arzu, Andy Nguyen, Hyoung-Kyu Song, Hyeonjoon Moon

{"title":"Artificial intelligence for climate change mitigation and adaptation: A domain-structured review of methods, applications, and research gaps for seven high-impact domains","authors":"L. Minh Dang, Sufyan Danish, Muhammad Fayaz, Gul E. Arzu, Andy Nguyen, Hyoung-Kyu Song, Hyeonjoon Moon","doi":"10.1016/j.psep.2026.109102","DOIUrl":"10.1016/j.psep.2026.109102","url":null,"abstract":"<div><div>Artificial intelligence (AI) offers transformative potential for climate change mitigation and adaptation, yet the rapid advancement of machine learning (ML) and deep learning (DL) methods has outpaced systematic efforts to organize and evaluate them. Following a rigorous multi-stage screening protocol, we developed a domain-driven taxonomy spanning seven sectors: energy and carbon management, buildings and cities, transportation, industry, agriculture, ecosystem conservation, and weather and disaster forecasting, synthesizing task typologies, representative algorithms, benchmark datasets, and case studies for each. Results show that DL dominates forecasting and monitoring applications, while hybrid and physics-informed approaches remain underutilized. Energy and emission-related mitigation studies are well represented, whereas hydrological systems, ecosystem resilience, and compound hazard prediction remain comparatively limited. Key challenges include data scarcity, uncertainty quantification, and limited transferability to diverse regions and climatic conditions. Unlike prior domain-specific surveys, this review unifies all seven sectors under one taxonomy while explicitly linking technical applications to socio-technical challenges including bias, interpretability, and AI’s own carbon footprint, providing researchers and practitioners with an actionable framework for responsible climate AI.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"215 ","pages":"Article 109102"},"PeriodicalIF":7.9,"publicationDate":"2026-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148289121","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

Lightweight aggregates sintered from Yellow River dredged sediment and sewage sludge: Mineral phase transformation and pore formation mechanism 黄河疏浚泥沙和污水污泥烧结轻骨料：矿物相变和孔隙形成机制

IF 7.9 2区环境科学与生态学

Process Safety and Environmental Protection Pub Date : 2026-07-15 Epub Date: 2026-06-23 DOI: 10.1016/j.psep.2026.109183

Zhuo Chen, Sha Liang, Zhiming Zhang, Lianzheng Gui, Chenyang Huang, Huabo Duan, Wenbo Yu, Jiakuan Yang

{"title":"Lightweight aggregates sintered from Yellow River dredged sediment and sewage sludge: Mineral phase transformation and pore formation mechanism","authors":"Zhuo Chen, Sha Liang, Zhiming Zhang, Lianzheng Gui, Chenyang Huang, Huabo Duan, Wenbo Yu, Jiakuan Yang","doi":"10.1016/j.psep.2026.109183","DOIUrl":"10.1016/j.psep.2026.109183","url":null,"abstract":"<div><div>In recent years, dredging projects have generated large quantities of dredged sediment (DS), which has a high silica content but limited practical value, posing significant disposal challenges. Herein, we prepared lightweight aggregates derived from Yellow River DS and sewage sludge (SS) by a sintering process. Optimal process conditions were determined through response surface methodology: DS/SS mass ratio of 4:1, 2 wt% sesbania gum (SG) as a co-extrusion additive, 4 wt% Na<sub>2</sub>CO<sub>3</sub> as a fluxing agent, sintering at 1030 °C for 35 min. The lightweight aggregates exhibited balanced performance: a single-particle compressive strength of 2.57 MPa, water absorption of 31.2%, and a bulk density of 0.686 g/cm<sup>3</sup>. During the sintering process, there was a mutual transformation between feldspar phases and SiO<sub>2</sub>. The formation of the molten amorphous phase was the primary factor contributing to the development of aggregates’ strength. Micro-CT results showed that, as the sintering temperature increased, the gradual expansion of the molten liquid phase initially produced a large number of pores smaller than 500 μm; at higher temperature, the coalescence and escape of gas bubbles within the liquid phase leaded to the formation of larger voids. This study provides a feasible pathway for the resource utilization of both DS and SS.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"215 ","pages":"Article 109183"},"PeriodicalIF":7.9,"publicationDate":"2026-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148313193","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

Experimental study on co-pyrolysis characteristics of oily sludge and waste textiles targeted at the fuel substitution for cement kilns 针对水泥窑燃料替代的含油污泥与废纺织品共热解特性试验研究

IF 7.9 2区环境科学与生态学

Process Safety and Environmental Protection Pub Date : 2026-07-15 Epub Date: 2026-06-30 DOI: 10.1016/j.psep.2026.109226

Chi Jia, Xiaoyan Li, Hui Li, Qing Huang, Liqiu Feng, Mengmeng Cui

{"title":"Experimental study on co-pyrolysis characteristics of oily sludge and waste textiles targeted at the fuel substitution for cement kilns","authors":"Chi Jia, Xiaoyan Li, Hui Li, Qing Huang, Liqiu Feng, Mengmeng Cui","doi":"10.1016/j.psep.2026.109226","DOIUrl":"10.1016/j.psep.2026.109226","url":null,"abstract":"<div><div>Combining utilization of pyrolysis products with fuel substitution in cement production is an innovative approach. While single pyrolysis of oily sludge or waste textiles has been studied, their co-pyrolysis behavior remains unclear. To explore the potential of cement kiln tail gas as the co-pyrolysis medium and assess pyrolysis products as cement alternative fuels, laboratory-scale co-pyrolysis experiments of cold-rolled oily sludge (CROS) and waste textiles (WT) were conducted. Effects of CROS/WT mass ratio, temperature, and atmosphere on product yields and characteristics were investigated. More CROS in the mixture increased oil yield and saturates content in the oil. More WT increased gas and residue yields, aromatics and resins in the oil, and CO content in the gas. A positive synergistic effect occurred only at low levels of WT addition. Under simulated cement kiln-tail gas, a small amount of O<sub>2</sub> raised resin content in the oil and reduced CH<sub>4</sub> and H<sub>2</sub> in the gas. The optimal co-pyrolysis performance was achieved at CROS/WT mass ratio of 8:2, 550 °C, and N<sub>2</sub>/CO<sub>2</sub> atmosphere. The oil and gas yields reached 49.62% and 19.01%; saturates and aromatics contents in the oil were 42.67% and 31.17%; the sum of H<sub>2</sub> and CH<sub>4</sub> contents was 47.74%.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"215 ","pages":"Article 109226"},"PeriodicalIF":7.9,"publicationDate":"2026-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148384179","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