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Long X, Lu Y, Guo H, Tang Y. Recent Advances in Solid Residues Resource Utilization in Traditional Chinese Medicine. ChemistrySelect 2023. [DOI: 10.1002/slct.202300383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Affiliation(s)
- Xu Long
- Shaanxi Qinling Chinese Herbal Medicine Application Development Engineering Technology Research Center Shaanxi University of Chinese Medicine Xianyang 712046 China
| | - Ying‐Lei Lu
- Shaanxi Qinling Chinese Herbal Medicine Application Development Engineering Technology Research Center Shaanxi University of Chinese Medicine Xianyang 712046 China
| | - Hui Guo
- Shaanxi Qinling Chinese Herbal Medicine Application Development Engineering Technology Research Center Shaanxi University of Chinese Medicine Xianyang 712046 China
| | - Yu‐Ping Tang
- Shaanxi Qinling Chinese Herbal Medicine Application Development Engineering Technology Research Center Shaanxi University of Chinese Medicine Xianyang 712046 China
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Li L, Chen Z, Huang Y, Guo Z, Dong H, Xie Y, Zhou N, Zhou Z. Investigation of gauze and medical bottle co-pyrolysis on the product formation, reactivity, and reaction pathway of char, liquid oil, and gas. BIOMASS CONVERSION AND BIOREFINERY 2023:1-14. [PMID: 37363205 PMCID: PMC10024516 DOI: 10.1007/s13399-023-04006-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 02/19/2023] [Accepted: 02/23/2023] [Indexed: 06/28/2023]
Abstract
Effective in-site treatment of medical waste has become a weak link in hospitals. Pyrolysis technology is a treatment method for medical waste that can enable rapid disposal in hospital settings and relieve environmental pressure, while also producing high-value products and reducing disposal costs. In this work, the effects of feedstock ratio and temperature on product yield and components of gauze (GA) and medical bottles (MB) co-pyrolysis have been investigated. The higher yield of solid products was obtained by co-pyrolysis of GA and MB at 400 ℃. With the addition of MB and an increase in temperature for the co-pyrolysis of GA and MB in a similar ratio, the pyrolysis oil and gas yields gradually increased. According to GC-MS analysis, co-feeding 75% MB to GA improved the alcohol content from 33.21% to a maximum yield of 59.8% at a pyrolysis temperature of 700 ℃. The content of aliphatic hydrocarbon reached 38.68% when the pyrolysis temperature and MB addition ratio were 700 °C and 75%, respectively. The GC data shows that the main gas components of co-pyrolysis of GA/MB were CH4 and H2, while the pyrolysis of pure GA or MB resulted in CO or CO2. Additionally, the solid carbon products obtained have an excellent pore structure. This strategy can benefit medical waste control and resource utilization for the low-cost disposal of medical waste and the acquisition of high-value resource products. Graphical Abstract
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Affiliation(s)
- Li Li
- Reproductive and Genetic Hospital Citic Xiangya, Changsha, 410128 People’s Republic of China
| | - Zhaoguang Chen
- School of Chemistry and Materials Science, Hunan Agricultural University, Changsha, 410128 People’s Republic of China
| | - Yingzhen Huang
- School of Chemistry and Materials Science, Hunan Agricultural University, Changsha, 410128 People’s Republic of China
| | - Zhenhao Guo
- School of Chemistry and Materials Science, Hunan Agricultural University, Changsha, 410128 People’s Republic of China
| | - Hang Dong
- School of Chemistry and Materials Science, Hunan Agricultural University, Changsha, 410128 People’s Republic of China
| | - Yu Xie
- School of Chemistry and Materials Science, Hunan Agricultural University, Changsha, 410128 People’s Republic of China
| | - Nan Zhou
- School of Chemistry and Materials Science, Hunan Agricultural University, Changsha, 410128 People’s Republic of China
- Hunan Engineering Research Center for Biochar, Changsha, 410128 People’s Republic of China
| | - Zhi Zhou
- School of Chemistry and Materials Science, Hunan Agricultural University, Changsha, 410128 People’s Republic of China
- Hunan Engineering Research Center for Biochar, Changsha, 410128 People’s Republic of China
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Raza S, Ghasali E, Raza M, Chen C, Li B, Orooji Y, Lin H, Karaman C, Karimi Maleh H, Erk N. Advances in technology and utilization of natural resources for achieving carbon neutrality and a sustainable solution to neutral environment. ENVIRONMENTAL RESEARCH 2023; 220:115135. [PMID: 36566962 DOI: 10.1016/j.envres.2022.115135] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 11/19/2022] [Accepted: 12/19/2022] [Indexed: 06/17/2023]
Abstract
The greatest environmental issue of the twenty-first century is climate change. Human-caused greenhouse gas emissions are increasing the frequency of extreme weather. Carbon dioxide (CO2) accounts for 80% of human greenhouse gas emissions. However, CO2 emissions and global temperature have risen steadily from pre-industrial times. Emissions data are crucial for most carbon emission policymaking and goal-setting. Sustainable and carbon-neutral sources must be used to create green energy and fossil-based alternatives to reduce our reliance on fossil fuels. Near-real-time monitoring of carbon emissions is a critical national concern and cutting-edge science. This review article provides an overview of the many carbon accounting systems that are now in use and are based on an annual time frame. The primary emphasis of the study is on the recently created carbon emission and eliminating sources and technology, as well as the current application trends for carbon neutrality. We also propose a framework for the most advanced naturally available carbon neutral accounting sources capable of being implemented on a large scale. Forming relevant data and procedures will help the "carbon neutrality" plan decision-making process. The formation of pertinent data and methodologies will give robust database support to the decision-making process for the "carbon neutrality" plan for the globe. In conclusion, this article offers some opinions, opportunities, challenges and future perspectives related to carbon neutrality and carbon emission monitoring and eliminating resources and technologies.
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Affiliation(s)
- Saleem Raza
- College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, 321004, Zhejiang, PR China; College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, PR China
| | - Ehsan Ghasali
- College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, 321004, Zhejiang, PR China; College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, PR China
| | - Muslim Raza
- Department of Chemistry Bacha Khan University, Charsada, Khyber Pakhtunkhwa, Pakistan; Department of Chemistry, University of Massachusetts Boston, MA, 02125, USA
| | - Cheng Chen
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, PR China
| | - Bisheng Li
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, PR China
| | - Yasin Orooji
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, PR China; Research & Development Department, Shandong Advanced Materials Industry Association, Jinan 250200, Shandong, China.
| | - Hongjun Lin
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, PR China
| | - Ceren Karaman
- Department of Electricity and Energy, Vocational School of Technical Sciences, AkdenizUniversity, Antalya, 07070, Turkey; School of Engineering, Lebanese American University, Byblos, Lebanon.
| | - Hassan Karimi Maleh
- School of Resources and Environment, University of Electronic Science and Technology of China, 611731, Xiyuan Ave, Chengdu, PR China; Department of Chemical Engineering, Quchan University of Technology, Quchan, 9477177870, Iran; Department of Sustainable Engineering, Saveetha School of Engineering, SIMATS, Chennai, 602105, India.
| | - Nevin Erk
- Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, 06560, Ankara, Turkey
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Feng Z, Zheng X, Ying Z, Feng Y, Wang B, Dou B. Drying of Chinese medicine residues (CMR) by hot air for potential utilization as renewable fuels: drying behaviors, effective moisture diffusivity, and pollutant emissions. BIOMASS CONVERSION AND BIOREFINERY 2023; 14:1-18. [PMID: 36627933 PMCID: PMC9815893 DOI: 10.1007/s13399-022-03722-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 12/20/2022] [Accepted: 12/27/2022] [Indexed: 06/17/2023]
Abstract
High moisture in Chinese medicine residues (CMR) can decrease the energy efficiency of thermochemical conversion, which necessitates the pre-drying. Owing to the complex constituents and decoction, CMR may possess distinct drying characteristics. It is necessary to understand its drying behaviors, effective moisture diffusivity, and pollutant emissions for future design and optimization of an industrial-level dryer. In this study, the drying of four types of typical CMR in hot nitrogen was performed. Their condensate and exhaust gas were collected and characterized. The results indicated that their drying process was dominated by internal moisture transport mechanism with a long falling rate stage. Drying temperature influenced their drying process more greatly than N2 velocity did. Residual sum of squares, root mean square error, and coefficient of determination indicated that Weibull model demonstrated their drying process best. Their effective moisture diffusivity was in the range of 1.224 × 10-8 to 4.868 × 10-8 m2/s, while their drying activation energy ranged from 16.93 to 30.39 kJ/mol. The acidic condensate had high chemical oxygen demand and total nitrogen concentration and yet low total phosphorus concentration. The concentration of total volatile organic compounds, non-methane hydrocarbons, H2S, and NH3 in the exhaust gas met the national emission limitation, while the deodorization of exhaust gas was required to remove odor smell. Supplementary information The online version contains supplementary material available at 10.1007/s13399-022-03722-4.
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Affiliation(s)
- Zhenyang Feng
- School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai, 200093 China
| | - Xiaoyuan Zheng
- School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai, 200093 China
| | - Zhi Ying
- School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai, 200093 China
| | - Yuheng Feng
- Thermal and Environment Engineering Institute, School of Mechanical Engineering, Tongji University, Shanghai, 200092 China
| | - Bo Wang
- School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai, 200093 China
| | - Binlin Dou
- School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai, 200093 China
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