keyword
https://read.qxmd.com/read/38000269/research-on-oxygen-enrichment-for-municipal-solid-waste-fly-ash-melting-a-pilot-scale-study-on-natural-gas-and-coal-as-the-melting-fuel
#21
JOURNAL ARTICLE
Yike Zhang, Zengyi Ma, Zhuoting Fang, Yuandong Qian, Zhiping Huang, Yilong Ye, Jianhua Yan
High energy consumption is the main obstacle of melting/vitrification technology for the disposal of municipal solid waste incineration fly ash (MSWIFA) for industrial applications. To reduce energy consumption and lower operating costs, oxygen enrichment melting was proposed and studied in this work. This research was conducted in a pilot-scale melting furnace, and three melting conditions were compared and discussed. The results showed that 66% of natural gas was saved and the operating cost was reduced by 55% when oxygen enrichment technology was applied to MSWIFA melting...
November 23, 2023: Journal of Environmental Management
https://read.qxmd.com/read/37913598/sp-icp-ms-and-hr-cs-gfaas-as-useful-available-techniques-for-the-size-characterization-and-speciation-of-ionic-and-nanoparticular-zinc-in-cosmetic-and-pharmaceutical-samples
#22
JOURNAL ARTICLE
J C García-Mesa, I Morales-Benítez, P Montoro-Leal, M M López Guerrero, E I Vereda Alonso
The use of zinc oxide nanoparticles (ZnO NPs) in cosmetic and pharmaceutical industry has been increased in recent years due to their good properties as solar radiation filters and antibacterial agent. According to the literature, the potential toxicity of these NPs could be size-dependent and the amount of solubilized metal. This work investigates new reliable and straightforward methodologies that enables the determination of ZnO NPs, discriminating them from ionic zinc in cosmetic samples. Two different techniques of analysis have been applied in this study: high-resolution continuum source graphite furnace atomic absorption spectrometry (HR-CS-GFAAS), and "single particle" inductively coupled plasma mass spectrometry (sp-ICP-MS)...
October 29, 2023: Talanta
https://read.qxmd.com/read/37902026/quantitative-analysis-of-cd-based-on-the-stress-effect-of-minerals-in-rice-by-laser-induced-breakdown-spectroscopy
#23
JOURNAL ARTICLE
Gangrong Fu, Wei Hu, Weiping Xie, Xiaoying Yao, Jiang Xu, Ping Yang, Mingyin Yao
Cadmium (Cd) is a highly toxic heavy metal that can accumulate in the food chain, posing a significant threat to human health. One of the key food sources through which Cd is often observed is rice. Therefore, determining heavy metals in rice is essential to assess the risk status of rice. Laser-induced breakdown spectroscopy (LIBS) has the advantages of simple sample preparation and fast analysis, which is expected to achieve real-time and rapid detection of rice. In this work, 40 naturally matured rice samples growing from the area that is possibly contaminated with Cd were collected to determine the Cd reference content in rice by graphite furnace atomic absorption spectroscopy as recommended by the Chinese National Standard...
October 30, 2023: Analytical Methods: Advancing Methods and Applications
https://read.qxmd.com/read/37843711/application-of-common-industrial-solid-waste-in-water-treatment-a-review
#24
REVIEW
Guifang Wang, Jie Xiang, Guangchuan Liang, Jing Wang, Shaojian Ma, Chunlin He
Industrial solid waste has a wide range of impacts, and it is directly or indirectly related to land, atmosphere, water, and other resources. Industrial solid waste has a large amount of production, complex and diverse components and contains a variety of harmful substances. However, as industrial by-products, it also has a lot of available value. Industrial solid waste has been continuously studied in water treatment due to its special composition and porous and loose structure. It is known that there are few reviews of various industrial solid wastes in the field of wastewater treatment, and most of them only discuss single industrial solid waste...
October 16, 2023: Environmental Science and Pollution Research International
https://read.qxmd.com/read/37755811/human-health-risk-assessment-of-arsenic-and-other-metals-in-herbal-products-containing-st-john-s-wort-in-the-metropolitan-area-of-mexico-city
#25
JOURNAL ARTICLE
Patricia Rojas, Elizabeth Ruiz-Sánchez, Carolina Rojas, Betzabeth A García-Martínez, Arely M López-Ramírez, Laura Osorio-Rico, Camilo Ríos, Aldo Arturo Reséndiz-Albor
Consumption of St. John's wort plant is high worldwide due to its various medicinal properties. However, herbal products containing St. John's wort may be contaminated with toxic metals. This is often related to contamination of both water and the atmosphere, lack of proper cultivation methods, and inadequate plant storage conditions, as well as a lack of stricter sanitary supervision. A safety assessment of copper (Cu), lead (Pb), cadmium (Cd) and arsenic (As) content in 23 products containing St. John's wort (pharmaceutical herbal products, food supplements and traditional herbal remedies) sold in the metropolitan area of Mexico City was conducted...
September 21, 2023: Toxics
https://read.qxmd.com/read/37743618/surface-activated-pyrolytic-carbon-black-%C3%A2-a-dual-functional-sustainable-filler-for-natural-rubber-composites
#26
JOURNAL ARTICLE
Abdul Sattar Mohammad
The significant rise in end-of-life tires (ELTs) globally poses immediate environmental and human health risks. Therefore, to promote ELTs recycling and to reduce tire industry carbon emissions, herein we present a facile approach for fine-tuning the interfacial interactions between pyrolytic carbon black (P-CB) obtained from ELTs and natural rubber (NR)  using phosphonium-based ionic liquid (PIL). The reinforcing effect of PIL-activated P-CB was studied by replacing the furnace-grade carbon black (N330-CB) with varying PIL and P-CB loadings...
September 24, 2023: ChemSusChem
https://read.qxmd.com/read/37726634/study-of-microscopic-properties-and-heavy-metal-solidification-mechanism-of-electrolytic-manganese-residue-based-cementitious-materials
#27
REVIEW
Liang Tang, Zhaoyi He, Kefan Chen, Xiaoli Wang, Yixun Xiao, Zhou Yu, Haixin Xiao
Electrolytic manganese residue (EMR) is a solid waste that contains a significant amount of soluble manganese and ammonia nitrogen, which can pose risks to human health if improperly disposed of. This study aimed to prepare cementitious materials containing abundant ettringite crystals by mixing EMR with various proportions of granulated blast furnace slag (GBFS) and alkaline activators (CaO, Ca(OH)2 , clinker, NaOH). The resulting cementitious material not only utilized a substantial amount of EMR but also exhibited comparable strength to ordinary Portland cement...
September 20, 2023: Environmental Science and Pollution Research International
https://read.qxmd.com/read/37714475/troubleshooting-dioxins-stack-emissions-in-an-industrial-waste-gas-incinerator
#28
JOURNAL ARTICLE
Amiram Bar Or, Roberto Palazzolo, Amir Kaplan, Smadar Attia, Nitsa Haikin, David Katoshevski
An important source of dioxins and furans at present is waste incineration, utmost formed during combustion processes and emitted to the environment without being fully captured by waste-gas treatment equipment. In this study, monitoring campaign of International Toxic Equivalents for dioxins and furans (I-TEQDF ), was carried out at pharmaceutical industrial waste incinerator to find a correlation between combustion parameters and feed composition with potential emission. Principal Component Analysis (PCA) shows that high values of dioxin emission correlate with short residence time of the flue gas in the furnace as well as low oxygen concentration...
September 13, 2023: Chemosphere
https://read.qxmd.com/read/37703727/speciation-of-toxic-pollutants-in-pb-zn-smelter-slags-by-x-ray-absorption-spectroscopy-in-the-context-of-the-literature
#29
JOURNAL ARTICLE
Dan Ting Chen, Amitava Roy, Yu Qian Li, Anna Bogush, Wing Yin Au, Julia A Stegemann
Pb/Zn smelter slag is a hazardous industrial waste from the Imperial Smelting Process (ISP). The speciation of zinc, lead, copper and arsenic in the slag controls their recovery or fate in the environment but has been little investigated. X-ray Absorption Spectroscopy (XAS) was applied to this complex poorly crystalline material for the first time to gain new insights about speciation of elements at low concentration. Zn, Cu, As K-edge and Pb L3-edge XAS was carried out for a Pb/Zn slag from a closed ISP facility in England, supported by Fe, S and P K-edge XAS...
August 23, 2023: Journal of Hazardous Materials
https://read.qxmd.com/read/37688807/effects-of-blast-furnace-slag-on-the-immobilization-plant-uptake-and-translocation-of-cd-in-a-contaminated-paddy-soil
#30
JOURNAL ARTICLE
Shuang Xu, Aiting Chen, Yaojing Wang, Ying Han, Mingda Liu
The potential toxicity of Cd to soil and rice plant severely threaten human health. This study was conducted to investigate the remediation effects of blast furnace slag (BFS) on the bioavailability of Cd in a contaminated paddy soil from a perspective of soil solution chemistry. Batch experiments, pot culture experiments, and principal analysis (PCA) were used to study the effects and mechanisms of BFS addition changing Cd chemical behavior and Cd toxicity. Results indicated that BFS facilitated Cd adsorption in soils, increased pH, Eh, and EC values in soil solution, whereas reduced dissolved Cd content...
September 1, 2023: Environment International
https://read.qxmd.com/read/37634723/geoenvironmental-properties-of-a-cr-vi-contaminated-soil-treated-by-alkali-activated-ggbs-under-freeze-thaw-cycles-insights-into-cr-species-transformation-and-microscopic-mechanism
#31
JOURNAL ARTICLE
Wenjie Zhang, Dian Jin, Xingzhang Guo, Xiang''ao Qin, Xiangning Liu
Stabilization/solidification is the most frequently used method for treating soils contaminated by heavy metals; however, degradation of the treatment will occur under freeze-thaw (F-T) cycles. In this paper, a low-carbon emission by-product, ground granulated blast furnace slag (GGBS), was adopted as a binder to treat Cr(VI)-contaminated soil after alkali excitation. Built on the usage scenarios of subgrade materials, the impact of F-T cycles and initial water content on the geoenvironmental properties of the treated soils, including leaching toxicity, unconfined compressive strength (UCS), pH, Eh, and permeability, were discussed...
August 25, 2023: Science of the Total Environment
https://read.qxmd.com/read/37623073/the-development-of-fe-3-o-4-monolithic-resorcinol-formaldehyde-carbon-xerogels-using-ultrasonic-assisted-synthesis-for-arsenic-removal-of-drinking-water
#32
JOURNAL ARTICLE
Sasirot Khamkure, Prócoro Gamero-Melo, Sofía Esperanza Garrido-Hoyos, Audberto Reyes-Rosas, Daniella-Esperanza Pacheco-Catalán, Arely Monserrat López-Martínez
Inorganic arsenic in drinking water from groundwater sources is one of the potential causes of arsenic-contaminated environments, and it is highly toxic to human health even at low concentrations. The purpose of this study was to develop a magnetic adsorbent capable of removing arsenic from water. Fe3 O4 -monolithic resorcinol-formaldehyde carbon xerogels are a type of porous material that forms when resorcinol and formaldehyde (RF) react to form a polymer network, which is then cross-linked with magnetite...
July 30, 2023: Gels
https://read.qxmd.com/read/37606773/transformation-of-zn-and-cr-during-co-combustion-of-sewage-sludge-and-coals-influence-of-coal-and-steam
#33
JOURNAL ARTICLE
Hao Liu, Yajun Wang, Juan Chen
Combustion experiments of sewage sludge (SS) blended with low-rank coal were conducted through a drop tube furnace (DTF) to explore the effects of low-rank coal type, blending ratio, and steam on the transformation of Zn and Cr. The results showed that the retention rates of Zn and Cr in ash increased from 24.35% and 71.49% for sludge combustion alone to 53.77% and 117.49%, respectively, for coal blended to SS with a mass ratio of 7:3. The greater the proportion of low-rank coal in the fuel, the greater the residual rate of heavy metals in the ash...
August 22, 2023: Environmental Science and Pollution Research International
https://read.qxmd.com/read/37578561/ecological-risk-assessment-of-heavy-metals-in-bottom-ashes-generated-by-small-scale-thermal-treatment-furnaces-for-domestic-waste-in-villages-and-towns-of-china
#34
JOURNAL ARTICLE
Shutong Wu, Tingting Hu, Dezhen Chen, Kezhen Qian, Yuyan Hu, Dong Xue, Mudassir Hussain Tahir
Small-scale Solid Waste Thermal Treatment (SSWTT) is prevalent in remote Chinese locations. However, the ecological threats associated with heavy metals in resultant bottom ash remain undefined. This research study scrutinized such ash from eight differing sites, assessing heavy metal content, chemical form, and leaching toxicity. Most bottom ash samples met soil contamination standards for development land (GB36600-2018). However, levels of As, Cd, Cr, Cu, Ni, Pb, and Zn in some samples exceeded agricultural land standards GB15618-2018) by 1591%, 64,478%, 1880%, 3886%, 963%, 1110%, and 2011% respectively...
August 14, 2023: Environmental Geochemistry and Health
https://read.qxmd.com/read/37444951/thermal-decomposition-path-studied-by-the-simultaneous-thermogravimetry-coupled-with-fourier-transform-infrared-spectroscopy-and-quadrupole-mass-spectrometry-of-imidazoline-dimethyl-succinate-hybrids-and-their-biological-characterization
#35
JOURNAL ARTICLE
Marta Worzakowska, Małgorzata Sztanke, Jolanta Rzymowska, Krzysztof Sztanke
The thermal decomposition path of synthetically and pharmacologically useful hybrid materials was analyzed in inert and oxidizing conditions for the first time and presented in this article. All the imidazoline/dimethyl succinate hybrids ( 1 - 5 ) were studied using the simultaneous thermogravimetry (TG) coupled with Fourier transform infrared spectroscopy (FTIR) and quadrupole mass spectrometry (QMS). It was found that the tested compounds were thermally stable up to 200-208 °C (inert conditions) and up to 191-197 °C (oxidizing conditions)...
June 27, 2023: Materials
https://read.qxmd.com/read/37444059/maternal-exposure-to-potentially-toxic-metals-and-birth-weight-preliminary-results-from-the-dsan-12m-birth-cohort-in-the-rec%C3%A3-ncavo-baiano-brazil
#36
JOURNAL ARTICLE
Homègnon A Ferréol Bah, Nathália R Dos Santos, Erival A Gomes Junior, Daisy O Costa, Victor O Martinez, Elis Macêdo Pires, João V Araújo Santana, Filipe da Silva Cerqueira, José A Menezes-Filho
Prenatal exposure to potentially toxic metals (PTM) may impair fetal growth (FG). We investigated the relationship between maternal exposure to lead (Pb), cadmium (Cd) and manganese (Mn) and birth weight (BW) of 74 newborns. Blood was collected during the second trimester of pregnancy to determine Pb (PbB) and Cd (CdB), while hair (MnH) and toenails (MnTn) were used for Mn. Samples were analyzed by graphite furnace atomic absorption spectrophotometry (GFAAS). Sociodemographic and BW data were collected from questionnaires and maternity records, respectively...
June 23, 2023: International Journal of Environmental Research and Public Health
https://read.qxmd.com/read/37299787/a-distributed-iot-air-quality-measurement-system-for-high-risk-workplace-safety-enhancement
#37
JOURNAL ARTICLE
Lorenzo Parri, Marco Tani, David Baldo, Stefano Parrino, Elia Landi, Marco Mugnaini, Ada Fort
The safety of an operator working in a hazardous environment is a recurring topic in the technical literature of recent years, especially for high-risk environments such as oil and gas plants, refineries, gas depots, or chemical industries. One of the highest risk factors is constituted by the presence of gaseous substances such as toxic compounds such as carbon monoxide and nitric oxides, particulate matter or indoors, in closed spaces, low oxygen concentration atmospheres, and high concentrations of CO2 that can represent a risk for human health...
May 25, 2023: Sensors
https://read.qxmd.com/read/37242735/development-of-a-gold-nanoparticle-linked-immunosorbent-assay-of-staphylococcal-enterotoxin-b-detection-with-extremely-high-sensitivity-by-determination-of-gold-atom-content-using-graphite-furnace-atomic-absorption-spectrometry
#38
JOURNAL ARTICLE
Chaojun Song, Yutao Liu, Jinwei Hu, Yupu Zhu, Zhengjun Ma, Jiayue Xi, Minxuan Cui, Leiqi Ren, Li Fan
Highly sensitive staphylococcal enterotoxin B (SEB) assay is of great importance for the prevention of toxic diseases caused by SEB. In this study, we present a gold nanoparticle (AuNP)-linked immunosorbent assay (ALISA) for detecting SEB in a sandwich format using a pair of SEB specific monoclonal antibodies (mAbs) performed in microplates. First, the detection mAb was labeled with AuNPs of different particle sizes (15, 40 and 60 nm). Then the sandwich immunosorbent assay for SEB detection was performed routinely in a microplate except for using AuNPs-labeled detection mAb...
May 13, 2023: Pharmaceutics
https://read.qxmd.com/read/37213022/blood-lead-pb-is-associated-with-lung-fibrotic-changes-in-non-smokers-living-in-the-vicinity-of-petrochemical-complex-a-population-based-study
#39
JOURNAL ARTICLE
Wei-Hoong Yau, Szu-Chia Chen, Da-Wei Wu, Huang-Chi Chen, Hung-Hsun Lin, Chih-Wen Wang, Chih-Hsing Hung, Chao-Hung Kuo
Lead (Pb) is a toxic metal that has been extensively used in various industrial processes, and it persists in the environment, posing a continuous risk of exposure to humans. This study investigated blood lead levels in participants aged 20 years and older, who resided in Dalinpu for more than two years between 2016 to 2018, at Kaohsiung Municipal Siaogang Hospital. Graphite furnace atomic absorption spectrometry was used to analyze the blood samples for lead levels, and the LDCT (Low-Dose computed tomography) scans were interpreted by experienced radiologists...
May 22, 2023: Environmental Science and Pollution Research International
https://read.qxmd.com/read/37197337/exposure-of-children-to-smoke-in-clay-figures-craft-in-caruaru-state-of-pernambuco-brazil
#40
JOURNAL ARTICLE
Géssica Coelho Ambrozim, Lorenzo Durão Cápua, Luiz Eduardo Lira Perazzo, Vinícius Zidane Silva Nascimento, Juliana Martins Barbosa da Silva Costa
INTRODUCTION: Alto do Moura, a neighborhood located in the city of Caruaru, state of Pernambuco, Brazil, is known by the production of figurative art in clay, which uses wood as the main fuel in its finishing process. Chronic exposure to toxic gases released in combustion can trigger respiratory atopies. OBJECTIVES: To identify children with respiratory atopies accompanied by the Alto do Moura Family Health Unit and the spatial distribution of furnaces used in the burning of figurative art in clay...
2023: Revista brasileira de medicina do trabalho: publicação oficial da Associação Nacional de Medicina do Trabalho-ANAMT
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