Waste

废物
  • 文章类型: Journal Article
    背景:手术开始时间的延迟可能会导致患者预后不良和医疗保健支出的显着增加。在经常面临系统效率低下的发展中国家尤其如此,例如缺乏手术室和训练有素的手术人员。对患者预后有重大影响,医疗保健效率,和资源分配,确定首例择期手术的延误是一个重要的研究领域.
    方法:于2023年5月1日至10月30日在埃塞俄比亚阿姆哈拉地区的三家综合和专科医院进行了一项多中心观察性研究。该研究的主要目的是确定首例开始时间较晚的发生,定义为患者在医院的切口时间为凌晨2:30时或之后进入手术室。次要目的是发现首例开始时间延迟的潜在根本原因。在整个研究期间,所有计划进行择期手术的患者都被纳入研究,作为手术清单上的第一个病例。每次紧急情况,daycase,下班后的情况下,取消的案例被排除在外。
    结果:在2023年5月1日至10月1日的研究窗口期间,共纳入530名手术患者。其中,41.5%是普通手术,20.4%为妇产科手术,13.2%为骨科手术。在程序开始之前,9名(1.7%)参与者与外科团队的一名成员进行了长时间的讨论.在凌晨2:30或之后到达手术室等候区的患者比在凌晨2:00之前或之后到达的患者出现首例开始时间延迟的可能性高2.5倍(AOR=2.50;95%CI:1.13-5.14)。此外,调查结果异常的参与者出现首例起始时间晚的可能性是其2.4倍(AOR=2.41;95%CI:1.06,5.50).此外,外科医生在凌晨2:30或之后进入手术室,首例开始时间延迟的几率增加了10.53倍(AOR=10.53;95%CI:5.51,20.11).
    结论:该研究强调了首次择期手术开始时间延迟的显著发生。因此,将注意力集中在诸如确保患者和手术团队及时到达(凌晨2:00或之前)以及在预定手术日之前及时评估和沟通调查结果等方面,可以促进努力最大限度地提高手术室效率和改善患者健康结果.
    BACKGROUND: Delays in surgery start times can lead to poor patient outcomes and considerable increases in healthcare expenditures. This is especially true in developing countries that often face systemic inefficiencies, such as a shortage of operating rooms and trained surgical personnel. With substantial effects on patient outcomes, healthcare efficiency, and resource allocation, identifying delays in first-case elective surgery is a crucial area of research.
    METHODS: A multicenter observational study was conducted at three comprehensive and specialized hospitals in the Amhara region of Ethiopia from May 1 to October 30, 2023. The primary aim of the study was to determine the occurrence of late first-case start times, defined as a patient being in the operating room at or after the hospital\'s incision time of 2:30 a.m. The secondary aim was to discover potential root causes of delayed first-case start times. All patients scheduled for elective surgery as the first case on the operating list throughout the study period were included in the study. Every emergency, day case, after-hours case, and canceled case was excluded.
    RESULTS: A total of 530 surgical patients were included during the study window from May 1 to October 1, 2023. Of these, 41.5% were general surgeries, 20.4% were gynecology and obstetrics surgeries, and 13.2% were orthopedic surgery procedures. Before the procedure started, nine (1.7%) of the participants had prolonged discussion with a member of the surgical team. Patients who arrived in the operating room waiting area at or after 2:30 a.m. were 2.5 times more likely to experience a first-case start time delay than those who arrived before or at 2:00 a.m. (AOR = 2.50; 95% CI: 1.13-5.14). Furthermore, participants with abnormal investigation results were 2.4 times more likely to have a late first-case start time (AOR = 2.41; 95% CI: 1.06, 5.50). Moreover, the odds of a late first-case start time were increased by 10.53 times with the surgeon being in the operating room at or after 2:30 a.m. (AOR = 10.53; 95% CI: 5.51, 20.11).
    CONCLUSIONS: The research highlights a significant occurrence of delayed start times for the first elective surgical procedures. Therefore, directing attention to aspects such as ensuring patients and surgical teams arrive promptly (by or before 2:00 a.m.) and timely evaluation and communication of investigative findings before the scheduled surgery day could facilitate efforts to maximize operating room efficiency and enhance patient health outcomes.
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  • 文章类型: Journal Article
    糖尿病技术是现代糖尿病治疗的基本组成部分。它的广泛使用与越来越多的“糖尿病技术浪费”有关。“这项研究的目的是在德国的专业糖尿病实践中,在现实世界中量化这种浪费。
    80名糖尿病和胰岛素治疗患者参与并收集了三个月的治疗相关废物。他们对抗糖尿病治疗的可持续性的态度,废物产生,并调查了他们自己的废物减少/分离行为。
    总共,收集了23707片与治疗相关的废物。它们包括5362条测试条,630个葡萄糖传感器,14619针,519个胰岛素药筒,599支钢笔,和1463件用于胰岛素泵治疗的辅助设备。收集废物的类型和数量取决于糖尿病的类型和各自的治疗方法,ie,每日多次注射,使用葡萄糖传感器,或者泵疗法。大多数参与者(92%)对废物的数量感到惊讶,并报告对其治疗资源消耗的认识有所提高(87%)。调查表明,人们对废物分离的兴趣增强(94%),对减少和回收设备/辅助设备的需求增强(93%)。
    我们的数据揭示了现代糖尿病治疗产生的废物的数量和复杂性。推断这些数据,据估计,德国每年产生约12亿个糖尿病技术废物。研究参与者的主要担忧是回收选择的数量有限。有人表达了对提高医疗产品可持续性的明确要求。
    UNASSIGNED: Diabetes technology is a fundamental part of modern diabetes therapy. Its widespread usage is associated with an increasing amount of \"diabetes technology waste.\" The aim of this study was to quantify this waste in a real-world situation in a specialized diabetes practice in Germany.
    UNASSIGNED: Eighty patients with diabetes and insulin treatment participated and collected all of their therapy-associated waste for three months. Their attitude toward sustainability of antidiabetic therapy, waste generation, and their own waste reduction/separation behavior was surveyed.
    UNASSIGNED: In total, 23 707 pieces of therapy-associated waste were collected. They comprised 5362 test strips, 630 glucose sensors, 14 619 needles, 519 insulin cartridges, 599 pens, and 1463 pieces of aids for insulin pump therapy. Type and quantity of the collected waste depended on the type of diabetes and the respective therapy, ie, multiple daily injections, usage of glucose sensors, or pump therapy. Most participants (92%) were surprised by the amounts of waste and reported an increased awareness toward the resource consumption of their therapy (87%). The survey indicated an enhanced interest in waste separation (94%) and a demand for the reduction and recycling of devices/aids (93%).
    UNASSIGNED: Our data revealed the amount and complexity of the waste generated by modern diabetes therapy. Extrapolating these data, it can be estimated that around 1.2 billion pieces of diabetes technology waste are generated in Germany per year. The major concern of the study participants was the limited number of recycling options. A clear demand for improved sustainability of the medical products was expressed.
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  • 文章类型: Journal Article
    众所周知,腐败是现实生活中可能危及罚款在遏制犯罪方面的效力的情况之一。我们提出了一个“腐败犯罪”的模型,通过该模型既可以稀释腐败造成的犯罪威慑,以及犯罪鼓励罚款的可能性,正式强调。更重要的是,通过对一个学生群体进行非法废物处理的实验,我们为我们的理论预测的有效性提供了实验证据。我们发现提高罚款率可能会成为令人鼓舞的犯罪,或者至少是无效的,超出上下文特定的罚款阈值。从政策的角度来看,我们建议,遏制犯罪制裁系统的最佳设计必须同时考虑腐败行为和反腐败政策。
    Corruption is known to be one of the real life situations which may jeopardize the effectiveness of fines in deterring crime. We present a model of \'crime with corruption\' by which both the dilution of crime deterrence due to corruption, as well as the possibility of crime encouraging fines, are formally highlighted. More importantly, by running an experiment on a subject pool of students for the case of illegal waste disposal, we provide experimental evidence on the validity of our theoretical predictions. We find that increasing fine rate may become crime encouraging, or at least ineffective, beyond a context-specific fine threshold. From a policy perspective, we suggest that the optimal design of a crime-deterring sanctioning system must simultaneously account for both corruption practices and anti-corruption policies.
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  • 文章类型: Journal Article
    酿酒过程每年产生全球约1000万吨由秸秆组成的废物,皮肤,和种子。葡萄酒果渣的可能再利用与其化学成分严格相关。在这项初步研究中,三种不同的撒丁岛白葡萄(马尔瓦西亚,Vermentino和Nasco)通过整个葡萄酒生产链对同一地区的种植进行了评估。为了减少对环境的影响,所有葡萄都按照综合生产实践(IPP)策略进行处理。对所采用的农艺方法和新鲜水果的主要理化参数进行了评价。酿酒后过程后,通过HPLC-DAD对果渣提取物的酚级分进行了完全定性和定量表征。水和乙醇被用作提取过程中的绿色溶剂。此外,整个果渣酿酒后过程是在酿酒厂内进行的,以减少能源损失和公路运输。研究结果表明,果渣提取物中存在大量有益的多酚,使用的葡萄类型,农艺实践,和酿酒方法都会影响提取物的数量和质量。发现Vermentino(28,391.5±7.0mg/kg)和Malvasia果渣(11,316.3±6.5mg/kg)中的多酚浓度最高和最低,分别。
    The winemaking process generates an annual global production of about 10 million tons of waste consisting of stalks, skin, and seeds. The possible reutilization of wine pomace is strictly linked to its chemical composition. In this preliminary study, three different Sardinian white grapes (Malvasia, Vermentino and Nasco) grown in the same area were evaluated through a whole wine production chain. To reduce environmental impact, all the grapes were treated following the integrated production practice (IPP) strategies. The adopted agronomic methods and the main physico-chemical parameters of the fresh fruits and musts were evaluated. A fully qualitative and quantitative characterization of the phenolic fraction of the pomace extracts was performed by HPLC-DAD after a post-winemaking process. Water and ethanol were utilized as green solvents in the extraction process. Additionally, the entire pomace post-winemaking process was carried out within the winery facilities to reduce energy loss and road transportation. The findings demonstrated that large amounts of beneficial polyphenols are present in pomace extracts, and that the type of grape used, agronomic practices, and winemaking method all influence the quantity and quality of the extracts. The polyphenol concentrations in the Vermentino (28,391.5 ± 7.0 mg/kg) and Malvasia pomace (11,316.3 ± 6.5 mg/kg) were found to be the highest and lowest, respectively.
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  • 文章类型: Journal Article
    垃圾填埋场的选择是可持续固体废物管理的一个重要方面,因为它确保社区或地区产生的废物以环保和安全的方式处置。选择垃圾填埋场的方法旨在选择对环境和公共卫生风险最小的地点,同时仍然满足当地社区的需求。这项研究旨在使用多标准评估来确定约旦Al-Balqa省的垃圾填埋场,以确保所选地点满足所有利益相关者的需求,同时最大程度地减少对环境和社区的负面影响。这项研究开发了一种层次结构,以做出垃圾填埋场选择决策,这包括识别参数,如到地表水的距离,土地覆盖,远离城乡,距离道路,斜坡,和土壤渗透性。使用评级系统来评估每个标准,和权重被分配以反映它们的相对重要性。然后,根据相关领域的专家意见,使用叠加加权技术来评估站点适用性。在这个研究区域,大约需要204283平方米来解决25年的城市固体废物量,而这项技术确定了大约79,210,000平方米的潜在垃圾填埋场。总的来说,该研究强调了使用多标准评估方法选择垃圾填埋场的重要性,以确保所选地点满足所有利益相关者的需求,同时最大程度地减少对环境和公共卫生的负面影响。该研究提供了对约旦和其他类似地区参与可持续固体废物管理的决策者有用的见解。-如何找到合适的垃圾填埋场以实现可持续发展。-在选择垃圾填埋场时考虑了哪些方面和标准。
    Landfill site selection is an essential aspect of sustainable solid waste management as it ensures that the waste generated by a community or region is disposed of in an environmentally friendly and safe manner. The approach for selecting landfill sites seeks to choose locations that provide the least risk to the environment and public health while still satisfying the demands of the local community. This research aims to use a multi-criteria assessment to determine a landfill location in Al-Balqa Governorate in Jordan to ensure that the chosen site meets the needs of all stakeholders while minimizing the negative impact on the environment and the community. This research developed a hierarchy structure to make landfill site selection decisions, which involves identifying parameters such as distance to surface water, land cover, distance from urban and rural areas, distance to roads, slope, and soil permeability. A rating system was used to evaluate each criterion, and weights were assigned to reflect their relative importance. An overlay weighting technique was then used to assess site suitability based on expert opinions from related fields. In this studied area, about 204,283 m2 is required to address 25 years of municipal solid waste volume, whereas this technique identified around 79,210,000 m2 of potential landfill sites. Overall, the research highlights the importance of using a multi-criteria assessment approach for landfill site selection to ensure that the chosen site meets the needs of all stakeholders while minimizing negative impacts on the environment and public health. The study provides insights that can be useful for decision-makers involved in sustainable solid waste management in Jordan and other similar regions. -How to Find the suitable landfills to achieve sustainable development.-What aspects and criteria were comsidered in choosing the landfill site.
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  • 文章类型: Journal Article
    背景:围手术期使用阿片类药物与不良临床结局相关。此外,阿片类药物处置会带来巨大的成本,由于药品的浪费和熟练劳动力报告浪费所需的时间。在这项研究中,我们的目的是估计成本和预测阿片类药物相关的术中产品废物的因素,以及评估术中阿片类药物剂量增加是否与术后不良结局风险增加相关。
    方法:我们包括170,607例接受全身麻醉并接受术中芬太尼的患者,氢吗啡酮,或者贝丝以色列女执事医疗中心的吗啡,波士顿,MA,美国,2010年1月至2020年6月。我们根据各种阿片类药物注射器的尺寸和确定阿片类药物废物的预测因素估算了与产品废物相关的成本。Further,我们根据严重程度指数评估了更高的阿片类药物剂量是否与术后不良事件相关,基于事件报告的药物错误报告程序分类。主要结果包括拔管后去饱和,术后恶心或呕吐,或术后嗜睡或镇静。
    结果:使用最小的注射器尺寸(芬太尼为50mcg,氢吗啡酮为0.2毫克,吗啡和2mg)导致最低的产品废物相关成本。阿片类药物废物的主要预测因素是术中使用一种以上阿片类药物(校正比值比[aOR]=7.64,95%CI7.40-7.89,P<0.001)。术中芬太尼剂量>50-100mcg(aOR=1.17[1.10-1.25],P<0.001,调整后的风险差异[ARD]2%)和>100mcg(aOR=1.24[1.16-1.33],P<0.001,ARD3%),氢吗啡酮>1毫克(aOR=1.13[1.06-1.20],P<0.001,ARD2%),吗啡>2-4毫克(aOR=1.26[1.02-1.56],P=0.04,ARD3%)和>4毫克(aOR=1.45[1.18-1.77],P<0.001,ARD5%)与主要结局的较高风险相关。
    结论:术中阿片类药物的较小注射器尺寸可能有助于减少产品浪费和相关成本,以及术后不良事件通过使用较低的术中阿片类药物剂量。
    BACKGROUND: Perioperative opioid use has been associated with adverse clinical outcomes. Additionally, opioid disposal carries significant costs, due to the waste of pharmaceutical products and the time needed by skilled labor to report the waste. In this study, we aimed to estimate costs and predict factors of opioid-associated intraoperative product waste, as well as to evaluate whether higher intraoperative opioid doses are associated with increased risk of adverse postoperative outcomes.
    METHODS: We included 170,607 patients undergoing general anesthesia and receiving intraoperative fentanyl, hydromorphone, or morphine at Beth Israel Deaconess Medical Center, Boston, MA, USA, between January 2010 and June 2020. We estimated product waste-associated costs based on various opioid syringe sizes and determined predictors of opioid waste. Further, we evaluated whether higher opioid doses were associated with postoperative adverse events according to the severity-indexed, incident report-based medication error-reporting program classification. The primary outcome included post-extubation desaturation, postoperative nausea or vomiting, or postoperative somnolence or sedation.
    RESULTS: The use of the smallest syringe sizes (50 mcg for fentanyl, 0.2 mg for hydromorphone, and 2 mg for morphine) resulted in the lowest product waste-associated costs. The main predictor of opioid waste was the administration of more than one intraoperative opioid (adjusted odds ratio [aOR] = 7.64, 95% CI 7.40-7.89, P < 0.001). Intraoperative doses of fentanyl > 50-100 mcg (aOR = 1.17 [1.10-1.25], P < 0.001, adjusted risk difference [ARD] 2%) and > 100 mcg (aOR = 1.24 [1.16-1.33], P < 0.001, ARD 3%), hydromorphone > 1 mg (aOR = 1.13 [1.06-1.20], P < 0.001, ARD 2%), and morphine > 2-4 mg (aOR = 1.26 [1.02-1.56], P = 0.04, ARD 3%) and > 4 mg (aOR = 1.45 [1.18-1.77], P < 0.001, ARD 5%) were associated with higher risk of the primary outcome.
    CONCLUSIONS: Smaller syringe sizes of intraoperative opioids may help to reduce product waste and associated costs, as well postoperative adverse events through utilization of lower intraoperative opioid doses.
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  • 文章类型: Journal Article
    今天,乌克兰远非欧洲标准,该国的废物管理系统仍然面临环境和技术问题,7%的领土被垃圾填埋场占据。乌克兰的大多数定居点都没有固体废物管理计划或卫生计划。垃圾填埋场,尤其是城市固体废物堆放场,是空气的重要贡献者,水,和土壤污染。这项研究的目的是全面了解堆填区对环境的影响,将它们从描述和抽象的平面转化为数学平面,并确定目前用于垃圾填埋场的卫生保护区。这项研究的主题是Zhytomyr领土社区(乌克兰)的城市垃圾填埋场,一个典型的乌克兰垃圾填埋场,其环境保护措施最少。作者使用一种原始方法来评估城市垃圾填埋场的环境危害,考虑到特定物理化学特性的水污染绝对指标的值;所研究指标的最大允许浓度;与垃圾填埋场边界的距离;与MPC相比,绝对污染指标的超标量;以及垃圾填埋场中的气味强度。计算出的污染指标可作为对城市垃圾填埋场造成的环境危害进行综合评估的基础。研究表明,Ot指标(对城市垃圾填埋场环境危害的评估)成倍增加地取决于填埋场边界。基于Ot的价值,进行了环境分区:根据计算并考虑到对垃圾填埋场影响区环境状况的监测,作者根据Ot值推荐了环境区划参数。这项研究的目的是阐明目前用于垃圾填埋场和固体生活垃圾处理的卫生保护区。这些研究材料也可以用来建立垃圾填埋场的数据库,能够制定一项计划,将它们作为环境风险增加的来源进行管理。
    Today, Ukraine is far from European standards, and the country\'s waste management system remains confronted with environmental and technogenic problems, with 7 % of the territory occupied by landfills. Most settlements in Ukraine do not have solid waste management programs or sanitation schemes. Landfills, and especially municipal solid waste dumps, are significant contributors to air, water, and soil pollution. The objective of this research is to develop a comprehensive understanding of the environmental impact of landfills, to translate them from a descriptive and abstract plane to a mathematical plane, and to identify the sanitary protection zones currently utilized for landfills. The subject of this study is the municipal waste landfill of the Zhytomyr territorial community (Ukraine), a typical Ukrainian landfill operated with minimal environmental protection measures. The authors used an original approach to assess the environmental hazard of a municipal waste landfill, taking into consideration the values of absolute indicators of water pollution for specific physicochemical characteristics; maximum permissible concentrations of the studied indicators; distance from the landfill boundary; the amount of excess of the absolute indicator of pollution compared to the MPC; and the intensity of odor in the landfill. The calculated pollution indicators served as the basis for an integrated assessment of the environmental hazards posed by the municipal waste landfill. The study revealed that the Ot indicator (evaluation of the environmental hazards of municipal waste landfills) depends exponentially on the landfill boundary. Based on the value of Ot, environmental zoning was carried out: according to the calculations and taking into account the monitoring of the environmental condition in the landfill\'s impact zone, the authors recommended the parameters of environmental zoning on the basis of the Ot value. The purpose of this study is to clarify the sanitary protection zones that are currently used for landfills and solid household waste disposals. The research materials can also be used to create databases on landfills, enabling the development of a plan to manage them as sources of heightened environmental risk.
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  • 文章类型: Journal Article
    目的:评估患者对金属妇科检查的满意度,塑料和生物基塑料阴道镜,并调查患者是否愿意为更可持续的医疗保健系统而在舒适度上妥协。
    方法:横断面研究:基于人群的调查。
    方法:荷兰五家医院的妇科门诊。
    方法:一般妇科咨询时间的患者。
    方法:一项包含两个关于患者人口统计学问题的调查,分发了四个关于舒适的信息,五个关于可持续性和医疗保健的信息。
    方法:舒适评分(量表1-10)。
    结果:(1)温度,尺寸和易于插入,(2)愿意为更可持续的医疗体系妥协。
    结果:总而言之,196名患者完成了调查。生物基塑料阴道镜的舒适度明显高于金属阴道镜(分别为8.03±1.65和7.26±1.51;P<0.001)。生物基塑料阴道窥器在温度上是最舒适的,而金属窥器最不舒适(P<0.007)。大多数患者愿意在舒适方面妥协,或者愿意重复使用一次性用品,为更可持续的医疗保健做出贡献。大多数患者(77%)敦促医疗机构应对气候变化。
    结论:在舒适评分方面,对生物基塑料窥器的支持存在微小但统计学上显著的差异,尽管可能会质疑这是否与临床相关。此外,患者愿意在舒适方面妥协,以实现更可持续的医疗保健,这应该是窥器选择的一个促成因素。
    OBJECTIVE: To evaluate patient satisfaction on gynaecological examination with metal, plastic and biobased plastic vaginal specula, and to investigate whether patients are willing to compromise on comfort for a more sustainable healthcare system.
    METHODS: Cross-sectional study: population-based survey.
    METHODS: Gynaecological outpatient clinics in five Dutch hospitals.
    METHODS: Patients during general gynaecology consultation hours.
    METHODS: A survey containing two questions about patient demographics, four about comfort and five about sustainability and healthcare was distributed.
    METHODS: Comfort score (scale 1-10).
    RESULTS: (1) temperature, size and ease of insertion, (2) willingness to compromise for a more sustainable healthcare system.
    RESULTS: In all, 196 patients completed the survey. Biobased plastic vaginal specula scored significantly higher on comfort than the metal ones (mean 8.03 ± 1.65 versus 7.26 ± 1.51 respectively; P < 0.001). The biobased plastic vaginal speculum is significantly the most comfortable on temperature, whereas the metal speculum is the least comfortable (P < 0.007). Most patients are willing to compromise on comfort or are open to the reuse of disposables to contribute to a more sustainable healthcare. The majority of patients (77%) urge healthcare organisations to combat climate change.
    CONCLUSIONS: There is a small but statistically significant difference in favour of a biobased plastic speculum regarding comfort score, although it might be questioned whether this is clinically relevant. Furthermore, patients are willing to compromise on comfort for a more sustainable healthcare, which should be a contributing factor in speculum selection.
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  • 文章类型: Journal Article
    在这项研究中,牛粪生物质转化为生物炭(BC)。通过在900°C下一步热解获得BC900,而BC700-900和BC900-700是通过在700-900°C和900-700°C的温度范围内的两步热解获得的,分别。研究BCs对水中四环素(TC)的吸附性能及应用价值。使用扫描电子显微镜和作图分析对样品进行了表征,傅里叶变换红外光谱,X射线衍射,和热重分析。随后,反应时间的影响,吸附剂用量,温度,pH值,并对离子强度进行了分析。根据吸附动力学的拟合结果,热解BCs表现出与伪二次动力学模型更好的拟合。吸附等温线表明单层吸附在吸附剂表面,BC900-700的最大吸附容量分别为158.93mg/g,BC700-900的最大吸附容量为150.15mg/g,BC900的最大吸附容量为142.56mg/g。此外,模拟废水和再生实验结果表明,BC900-700不仅在废水中具有优异的吸附性能,而且具有显着的再生能力。与实际应用中的一步热解BCs相比,本研究中的两步热解BCs具有更高的吸附能力。这些发现为进一步探索吸附机理和优化工艺提供了见解。
    In this study, cow dung biomass was converted into biochar (BC). BC900 was obtained through one-step pyrolysis at 900 °C, while BC700-900 and BC900-700 were obtained via two-step pyrolysis at temperature ranges of 700-900 °C and 900-700 °C, respectively. The primary objective was to investigate the adsorption performance and application value of BCs for tetracycline (TC) in water. The samples underwent characterization using scanning electron microscopy and mapping analysis, Fourier transform infrared spectroscopy, X-ray diffraction, and thermogravimetric analysis. Subsequently, the effects of reaction time, adsorbent dosage, temperature, pH, and ionic strength were analyzed. Based on the fitting results of adsorption kinetics, the pyrolytic BCs exhibited a better fit with the pseudo-secondary kinetic model. The adsorption isotherm indicated monolayer adsorption on the surface of the adsorbents, with maximum adsorption capacities of 158.93 mg/g for BC900-700, 150.15 mg/g for BC700-900, and 142.56 mg/g for BC900, respectively. Furthermore, results from simulated wastewater and regeneration experiments demonstrated that BC900-700 exhibited not only excellent adsorption performance in wastewater but also remarkable regeneration capabilities. The two-step pyrolysis BCs in this study displayed a higher adsorption capacity compared to the one-step pyrolysis BCs in practical applications. These findings provide insights for further exploring the adsorption mechanism and optimizing the process.
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  • 文章类型: Journal Article
    研究的目的是评估牙科学院本科生对生物废物管理(BMW)的知识和认识,泰米尔纳德邦。
    在泰米尔纳德邦牙科学院的学生中,印度,进行了横断面观察性研究.预先设计的问卷分发给学生。他们的专业知识和管理生物医学废物的意识是被调查的变量。
    一百八十名学生参加。男女比例为1:2,应答者的平均年龄为19.76±1.03岁。当涉及到有关生物医学废物管理的信息时,平均60.33%是正确的,39.57%是错误的。因为他们同样的知识,81.35%正确,18.65%不正确。
    研究结果表明,学生对生物医学废物的管理有很高的认识和理解。
    UNASSIGNED: The objective of study was to assess the knowledge and awareness of the management of biological waste (BMW) among undergraduate students of Dental College, Tamilnadu state.
    UNASSIGNED: Among the students of Dental College in Tamilnadu state, India, a cross-sectional observational research was conducted. A pre-designed questionnaire was distributed to the students. Their expertise and awareness of managing biomedical waste were the variables that were investigated.
    UNASSIGNED: One hundred and eighty students were participated. The male to female ratio was 1:2, and the average age of responders was 19.76 ± 1.03 years. When it comes to information concerning the management of biomedical waste, an average of 60.33% were correct and 39.57% were incorrect. For their knowledge of the same, 81.35% were correct and 18.65% were incorrect.
    UNASSIGNED: The findings indicated that students had a high degree of knowledge and understanding regarding the management of biomedical waste.
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