Journal of Material Cycles and Waste Management最新文献_第10页

Synergistic valorization of wheat husk-derived HZSM-5 catalyst in pyrolysis of polystyrene and polypropylene: sustainable waste-to-energy conversion enhanced by machine learning models 麦壳衍生 HZSM-5 催化剂在热解聚苯乙烯和聚丙烯过程中的协同增值：通过机器学习模型加强可持续废物能源转化

IF 2.7 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2024-08-13 DOI: 10.1007/s10163-024-02048-9

Prathiba Rex, Kalil Rahiman

{"title":"Synergistic valorization of wheat husk-derived HZSM-5 catalyst in pyrolysis of polystyrene and polypropylene: sustainable waste-to-energy conversion enhanced by machine learning models","authors":"Prathiba Rex, Kalil Rahiman","doi":"10.1007/s10163-024-02048-9","DOIUrl":"10.1007/s10163-024-02048-9","url":null,"abstract":"<div><p>The current study aims to model and optimize the catalytic pyrolysis of plastics, incorporating an agricultural biomass waste-derived catalyst. Polystyrene (PSW) and polypropylene (PPW) are experimented with thermal and catalytic pyrolysis. Agricultural biomass waste (wheat husk) was selected and acid treated with sulfuric acid (HZSM-5<sub>SA</sub>) and hydrochloric acid (HZSM-5<sub>CA</sub>), and then used as catalyst. Thermal and catalytic pyrolysis were conducted in a semi batch reactor, with reaction temperature (500 ℃) and different ratios (10:1, 10:2 & 10:3). At a ratio 10:2, PSW with HZSM-5<sub>SA</sub> produced 91.19 wt.% of oil yield and PPW with HZSM-5<sub>SA</sub> produced 85.73 wt.% of oil yield. The catalyst HZSM-5<sub>SA</sub> was effective in the reduction of reaction temperature and time, it decreased from 450 ℃ to 437 ℃ and 22 min to 14 min for PSW. Catalyst activity was also observed for PPW, the reaction temperature decreased from 471 ℃ to 456 ℃ and 34 min to 19 min. Oil properties were determined and it was found that the kinematic viscosity of oil obtained from PSW with HZSM-5<sub>SA</sub> was 2.53 cSt, which coincide with the diesel Bharat Stage (BS VI 2020). Total conversion of pyrolysis products was predicted using six Machine Learning (ML) models such as Random Forest, Support Vector, K-Nearest Neighbor, Decision Tree, AdaBoost, and Gradient Boost. Among all the models, the Gradient Boost regressor model had a good evaluation metrics of R<sup>2</sup> value of 0.984 and RMSE of 0.019, respectively. This study illustrates the use of ML models to predict the total conversion and their correlation matrix with target and feature variables. This study also highlights that cost-effective catalyst can be prepared from biomass (wheat husk) and the use of ML models to train the datasets and evaluate the actual and predicted values.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"26 6","pages":"3433 - 3445"},"PeriodicalIF":2.7,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142193090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

The impact of environmental education, knowledge, and facility on pre-service teachers’ intention toward waste separation and recycling on campus: teacher education institution in Indonesia case study 环境教育、知识和设施对职前教师校园垃圾分类和回收意向的影响：印度尼西亚师范院校案例研究

IF 2.7 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2024-08-12 DOI: 10.1007/s10163-024-02043-0

Ardyanto Tanjung, Indriyani Rachman, Toru Matsumoto

{"title":"The impact of environmental education, knowledge, and facility on pre-service teachers’ intention toward waste separation and recycling on campus: teacher education institution in Indonesia case study","authors":"Ardyanto Tanjung, Indriyani Rachman, Toru Matsumoto","doi":"10.1007/s10163-024-02043-0","DOIUrl":"10.1007/s10163-024-02043-0","url":null,"abstract":"<div><p>Engaging aspiring pre-service teachers (PsTs) is crucial for achieving sustainable waste separation and recycling levels within the academic community. In this study, we considered three supplementary factors from the Theory of Planned Behavior (TPB) to elucidate the formation of actions related to engaging in waste separation and recycling intention on campus (WSRIs). An online survey, utilizing a questionnaire, was administered to over 530 PsTs in East Java, Indonesia, comprising 380 females and 152 males. Structural equation modeling was employed to analyze the main factors and paths influencing WSRIs. The waste separation and recycling intention of PsTs were primarily influenced by five internal subjective factors and three external factors. Among these, environmental education (EE), perceived behavioral control, and environmental knowledge (EK) displayed the most significant associations, with EE having the greatest direct effect. Conversely, attitude had minimal effect on WSRIs. Moreover, to improve waste separation and recycling practices on campus, it is recommended to integrate EK into daily life, emphasizing its importance in achieving these sustainable goals.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"26 6","pages":"3917 - 3927"},"PeriodicalIF":2.7,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141938922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 industrial byproduct gypsum for use as plastering materials by the tandem pyro-hydro process: impurities removal, whiteness improvement, and regularity of phase evolution 通过串联热-水工艺回收工业副产品石膏用作抹灰材料：去除杂质、提高白度和相演化的规律性

IF 2.7 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2024-08-12 DOI: 10.1007/s10163-024-02044-z

Zhengqiang Zheng, Changzhou Weng, Zeyu Kang, Minhua Zhong, Changyong Yu, Zhang Lin, Weizhen Liu

{"title":"Recycling industrial byproduct gypsum for use as plastering materials by the tandem pyro-hydro process: impurities removal, whiteness improvement, and regularity of phase evolution","authors":"Zhengqiang Zheng, Changzhou Weng, Zeyu Kang, Minhua Zhong, Changyong Yu, Zhang Lin, Weizhen Liu","doi":"10.1007/s10163-024-02044-z","DOIUrl":"10.1007/s10163-024-02044-z","url":null,"abstract":"<div><p>In China, large amounts of industrial byproduct gypsum (IBG) end up as waste and excessive stockpiling due to its low whiteness and high impurity content. In this study, two typical IBG including phosphogypsum (PG) and flue gas desulfurization gypsum (FGDG) were the research object. The impurities removal and the whiteness improvement by the tandem pyro-hydro process were investigated. Species of impurities, mechanism of whiteness improvement and the evolution of the gypsum phase during the tandem process were revealed. The results indicate that the impurities responsible for the poor whiteness of IBG included organic matter, carbon particles, and silicates. The temperature of the pyro process is the critical factor. The IBG is calcinated at 400–500 °C to fully remove organic matter and carbon particles, while decompose silicates to silica. Following, in the hydro step, the calcined IBG was treated with dilute sulfuric acid (0.2–1.0 M) to remove ion impurities such as Fe(III), the higher temperature and higher acidity are favorable to the production of valuable CaSO<sub>4</sub>. After treatment, the whiteness of IBG was improved from below 40% to above 80%, and the soluble impurity content can meet the standards. Moreover, both PG and FGDG products exhibited a compressive strength exceeding 10.0 MPa of curing for 7 d. This work provides theoretical guidance to promote the resource utilization of IBG, especially as plastering materials after purification and whitening.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"26 6","pages":"3384 - 3396"},"PeriodicalIF":2.7,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141939051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Selection of biomass and bioenergy applications from rice production waste: an integrated method of a circular bioeconomy-based fuzzy inference system and portfolio decision analysis 从水稻生产废弃物中选择生物质和生物能源应用：基于循环生物经济的模糊推理系统和组合决策分析的综合方法

IF 2.7 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2024-08-09 DOI: 10.1007/s10163-024-02045-y

Abdolvahhab Fetanat, Mohsen Tayebi, Mehran Moteraghi

{"title":"Selection of biomass and bioenergy applications from rice production waste: an integrated method of a circular bioeconomy-based fuzzy inference system and portfolio decision analysis","authors":"Abdolvahhab Fetanat, Mohsen Tayebi, Mehran Moteraghi","doi":"10.1007/s10163-024-02045-y","DOIUrl":"10.1007/s10163-024-02045-y","url":null,"abstract":"<div><p>Circular bioeconomy (CBE) strategies purpose to attain sustainable development goals (SDGs) with mitigating greenhouse gasses emissions. By employing a portfolio theory, we have been shown that an enhancement in the circularity of resources can be occurred utilizing the choice of suitable economic securities in relation to the food wastes. An integrated method of a CBE-based fuzzy inference system and portfolio decision analysis is considered to analyze the biomass and bioenergy applications (economic securities) of generated wastes from the rice production process as food waste. The results show that among the ten economic securities, five applications have the highest weights with regard to the effectiveness of CBE strategies. They are (1) soil incorporation, (2) srganic fertilizers, (3) she industry of paper, wood, and building materials, (4) Clean electrical energy production, and (5) snimal feeding. These are selected as the most appropriate economic securities for the sustainable management of rice production waste in Behbahan city, Iran. This review can give a deeper analysis of circular solutions to extant linear pathways that play a significant role in the enhancement of food security and environmental sustainability in future. Implementing this method in food-waste management can facilitate the realization of SDGs.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"26 6","pages":"3397 - 3415"},"PeriodicalIF":2.7,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10163-024-02045-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141923743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Waste-separation behaviour and environmental education in China, a perspective of primary- and middle-school students and teachers 从中小学生和教师的角度看中国的垃圾分类行为和环境教育

IF 2.7 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2024-08-05 DOI: 10.1007/s10163-024-02038-x

Dongyong Zhang, Jingjing Chen, Stephen Morse, Bingjun Li

{"title":"Waste-separation behaviour and environmental education in China, a perspective of primary- and middle-school students and teachers","authors":"Dongyong Zhang, Jingjing Chen, Stephen Morse, Bingjun Li","doi":"10.1007/s10163-024-02038-x","DOIUrl":"10.1007/s10163-024-02038-x","url":null,"abstract":"<div><p>The research reported in this paper was designed to investigate the interconnection between students’ environmental education (EE) and their waste-separation behaviour, with students’ attitude, knowledge and sense of responsibility being the mediate factors, and explores how EE in schools could be improved. A questionnaire-based survey was employed and the views of 600 primary- and middle-school (PMS) students and 175 teachers in Yingtan City, Jiangxi Province, China were obtained. The results indicate that EE in Chinese schools positively affects students’ waste separation behaviour by affecting their attitude to waste separation. But the current EE in Chinese schools has not been able to improve students’ sense of responsibility for environmental protection. The incentives for teachers to include EE in their teaching includes the belief that EE in school would pass environmental knowledge to the students and cultivate their pro-environmental attitude which would eventually benefit the environment and society in the long run and the school’s requirement of using EE in the classroom. The main barriers are the schools’ neglect of EE and the teachers’ lack of EE knowledge. Suggestions for teachers and policy-makers at school level and local government level are put forward to improve EE in school and thereby improve students’ waste separation behaviour.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"26 5","pages":"3167 - 3179"},"PeriodicalIF":2.7,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10163-024-02038-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141938991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Application of material flow cost accounting (MFCA) in waste reduction: a case study on small and medium-scaled enterprise (SME) corrugation packages industry 物料流成本会计（MFCA）在减少废物中的应用：中小型企业（SME）瓦楞包装行业案例研究

IF 2.7 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2024-08-05 DOI: 10.1007/s10163-024-02039-w

Naveed Ahmed, Muhammad Asad Ali, Muhammad Sana, Madiha Rafaqat, Ateekh Ur Rehman

{"title":"Application of material flow cost accounting (MFCA) in waste reduction: a case study on small and medium-scaled enterprise (SME) corrugation packages industry","authors":"Naveed Ahmed, Muhammad Asad Ali, Muhammad Sana, Madiha Rafaqat, Ateekh Ur Rehman","doi":"10.1007/s10163-024-02039-w","DOIUrl":"10.1007/s10163-024-02039-w","url":null,"abstract":"<div><p>Nowadays, due to inadequate resource utilization and a lack of comprehensive accounting procedures, many firms face substantial issues in controlling their environmental and cost-related implications. As the global emphasis on sustainability and resource efficiency grows, there is an increasing need for Material Flow Cost Accounting (MFCA) adoption to meet these concerns. In this case study, a small and medium-scaled enterprise (SME) i.e., Corrugation Packages Industry in Pakistan has been selected. The formation of a corrugation box has been considered to evaluate the process waste based on MFCA analysis. The identified areas with high negative costs and their reasons are also elaborated with proposed MFCA-based solutions. The positive and negative costs of entire process have been further examined by material cost (MC), system cost (SC), energy cost (EC), and waste management cost (WC). By successful implementation of the MFCA, it has been found that an improvement in the total cost of about 11.11% (MC), 29.61% (SC), 9.32% (EC), 92.57% (WC) have been obtained, whereas the enhancement in positive costs of about 9.82% (MC), 31.31% (SC), 9.88% (EC), 95.08% (WC) have been recorded, and reduction in negative costs of about 29.50% (MC), 36.56% (SC), 35.52% (EC), and 69.83% (WC) have been noted.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"26 5","pages":"3217 - 3247"},"PeriodicalIF":2.7,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141939050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Evaluating the performance of citric acid and maleic acid for mixed-acid leaching of critical metals from spent lithium-ion batteries 评估柠檬酸和马来酸在混合酸浸出废锂离子电池中关键金属方面的性能

IF 2.7 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2024-08-04 DOI: 10.1007/s10163-024-02041-2

Chelsea Burgess, Emenike G. Okonkwo, Yinghe He

{"title":"Evaluating the performance of citric acid and maleic acid for mixed-acid leaching of critical metals from spent lithium-ion batteries","authors":"Chelsea Burgess, Emenike G. Okonkwo, Yinghe He","doi":"10.1007/s10163-024-02041-2","DOIUrl":"10.1007/s10163-024-02041-2","url":null,"abstract":"<div><p>Leaching, especially using mixtures of organic acids, can reduce the chemical requirement of organic acid leaching of metals. This work investigates the performance of maleic acid and citric acid and their potential synergy in a mixed-acid leaching system for the recovery of valuable metals from the cathode material of spent lithium-ion batteries (LIBs). The influence of key leaching parameters such as acid concentration, temperature and reducing agent (fructose) were examined. As single acids, citric acid proved to be a stronger lixiviant than maleic acid. 83% Li, 84%Mn, 80% Co and 80%Ni was leached using 0.5 M citric acid at a temperature of 90 °C after 60 min. As mixtures, the leaching of the metals showed significant dependence on the ratio of the acids and increased with the proportion of citric acid, indicating that citric acid is the dominant lixiviant. However, the performance of the mixtures of citric acid and maleic acid was lower than that of the individual acids, thus demonstrating lack of synergy. Spectra analysis of the leachates confirmed the formation of metal complexes and interactions between citric and maleic acid, and explains the observed performance of the acid mixtures. Overall, this work reveals that not all organic acid mixtures are synergic.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"26 5","pages":"3205 - 3216"},"PeriodicalIF":2.7,"publicationDate":"2024-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10163-024-02041-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141939052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Assessing environmental impacts of utilizing recycled concrete waste from the technosphere: a case study of a cement industry in West Java, Indonesia 评估利用技术圈回收混凝土废料对环境的影响：印度尼西亚西爪哇省水泥工业案例研究

IF 2.7 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2024-08-02 DOI: 10.1007/s10163-024-02042-1

Jonas Kristanto, Rio Aryapratama, Muhammad Aulia Anwar Ibrahim, Titi Tiara Anasstasia, Muhammad Mufti Azis, Andi Louis Kalza, Erna Lestianingrum, Budiono Hendranata

{"title":"Assessing environmental impacts of utilizing recycled concrete waste from the technosphere: a case study of a cement industry in West Java, Indonesia","authors":"Jonas Kristanto, Rio Aryapratama, Muhammad Aulia Anwar Ibrahim, Titi Tiara Anasstasia, Muhammad Mufti Azis, Andi Louis Kalza, Erna Lestianingrum, Budiono Hendranata","doi":"10.1007/s10163-024-02042-1","DOIUrl":"10.1007/s10163-024-02042-1","url":null,"abstract":"<div><p>Cement industries generate massive amounts of greenhouse gas (GHG) emissions. As a fast-growing economy in Southeast Asia, Indonesia consumed more than 62 Mtons of cement in 2020. To cut down the impacts from extensive resource extraction and GHG emissions from cement industries, utilizing secondary raw materials such as concrete is an option to simultaneously reduce the limestone requirement at cement plants. This study aims to estimate yearly concrete waste flow from residential building stocks and the environmental impacts of utilizing those concrete waste in a cement-producing region in West Java, Indonesia by combining dynamic material flow analysis, stock modeling, and life cycle assessment (LCA). We found Cirebon Regency’s residential buildings would accumulate 46.2 Mtons concrete stocks by 2050. The estimated concrete waste from demolished residential buildings in Cirebon would reach up to 2 Mtons by 2050 depending on building lifetimes. At the baseline scenario, environmental impacts per ton cement are 647.35 kg CO<sub>2</sub> eq. of Global Warming Potential (GWP), 90.25 kg C deficit of Land Use (LU), and 4,707.24 MJ of Cumulative Energy Demand (CED). By utilizing 1 Mtons of recycled concrete, the cement production facility would decrease those values by up to 5.42 kg CO<sub>2</sub> eq./ton cement, 0.09 kg C deficit/ton cement, and 0.43 MJ/ton cement, respectively. Our results help inform decision-makers to formulate policy options on utilizing concrete waste to reduce cement production environmental impacts.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"26 5","pages":"3248 - 3261"},"PeriodicalIF":2.7,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10163-024-02042-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141882468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Recycling of Ni from leached spent catalyst residue by H2SO4 leaching and solvent extraction: leaching kinetics, purification and product preparation 通过 H2SO4 浸出和溶剂萃取从浸出催化剂废渣中回收镍：浸出动力学、纯化和产品制备

IF 2.7 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2024-08-01 DOI: 10.1007/s10163-024-02040-3

Shuo Liu, Haoran Yu, Ali Yaraş, Linchao Hu, Wenyi Zhang, Mingguo Peng, Hasan Arslanoğlu, Linqiang Mao

{"title":"Recycling of Ni from leached spent catalyst residue by H2SO4 leaching and solvent extraction: leaching kinetics, purification and product preparation","authors":"Shuo Liu, Haoran Yu, Ali Yaraş, Linchao Hu, Wenyi Zhang, Mingguo Peng, Hasan Arslanoğlu, Linqiang Mao","doi":"10.1007/s10163-024-02040-3","DOIUrl":"10.1007/s10163-024-02040-3","url":null,"abstract":"<div><p>Spent hydrodesulfurization catalyst (HDS) is considered as the important secondary resource for Mo and Ni. The separation of Mo from HDS was usually conducted by soda roasting and water leaching, while Ni remained in the leached residue. This study proposed a method to recover Ni from leached residue by H<sub>2</sub>SO<sub>4</sub> leaching and solvent extraction, and Ni was recycled in the form of NiO. The results showed that the optimum Ni leaching process were conducted using 30% H<sub>2</sub>SO<sub>4</sub> with liquid–solid ratio of 10 at 70 ℃ for 120 min. The optimal extraction was accomplished using 30% di-(2-ethylhexyl) phosphate (P204) saponification at pH value 6.0 with organic/aqueous (O/A ratio) of 1 for 1 min. Additionally, 20% H<sub>2</sub>SO<sub>4</sub> could be used to strip Ni from organic phase with O/A ratio of 10. Finally, NiSO<sub>4</sub> was calcined at 850 ℃ for 1.0 h to obtain NiO. The Ni leaching kinetic analysis showed that the activation energy of Ni leaching process was 16.10 kJ/mol, which was accorded with the shrinkage unreacted kernel model controlled by internal diffusion. This study provided an alternative method to recycle Ni and given a deeper insight to the leaching mechanism during H<sub>2</sub>SO<sub>4</sub> leaching Ni from spent catalyst.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"26 5","pages":"3193 - 3204"},"PeriodicalIF":2.7,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10163-024-02040-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141866056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Preparation of a lightweight calcium silicate board using chlorine-containing Ti-extraction blast furnace slag and diatomite 利用含氯钛提取高炉渣和硅藻土制备轻质硅酸钙板

IF 2.7 4区环境科学与生态学

Journal of Material Cycles and Waste Management Pub Date : 2024-07-31 DOI: 10.1007/s10163-024-02036-z

Lin Li, Tao Jiang, Qiang Yang, Yanli Ren, Jie Xu, Zhiqiao Li, Xinyu An

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