Heavy Metals - New Insights [Working Title]最新文献

Heavy Metals - New Insights [Working Title] Pub Date : 2022-02-04 DOI: 10.5772/intechopen.102441

Elena Loredana Ungureanu, G. Mustățea

引用次数: 0

Leaching Technology for Precious Heavy Metal Recapture through (HCI + HNO3) and (HCI + H2SO4) from E-Waste 电子垃圾中(HCI + HNO3)和(HCI + H2SO4)浸出回收贵重重金属技术

Heavy Metals - New Insights [Working Title] Pub Date : 2022-01-31 DOI: 10.5772/intechopen.102347

Murugesan Manikkampatti Palanisamy, Akilamudhan Palaniappan, V. Myneni, Padmapriya Veerappan, Minar Mohamed Lebba

{"title":"Leaching Technology for Precious Heavy Metal Recapture through (HCI + HNO3) and (HCI + H2SO4) from E-Waste","authors":"Murugesan Manikkampatti Palanisamy, Akilamudhan Palaniappan, V. Myneni, Padmapriya Veerappan, Minar Mohamed Lebba","doi":"10.5772/intechopen.102347","DOIUrl":"https://doi.org/10.5772/intechopen.102347","url":null,"abstract":"The rapid growth of information technology and industrialization are the key components for the development of electronic equipment, and their inevitable role in human day-to-day life has an important stint in the generation of electronic waste (e-waste). This waste has far-reaching environmental and health consequences. One such e-waste printed circuit board (PCB) contains significant amounts of valuable heavy metals such as copper (Cu), lead (Pb), zinc (Zn), nickel (Ni), and others that can be extracted through various metallurgical routes. Recovery and recycle of heavy metal ions is a major challenge to prevent environmental contamination. The present study discusses the current e-waste scenario, health impacts and treatment methods in detail, and also presents experimental results of recovery of heavy metals from printed circuit boards (PCBs) by leaching using aqua regia (HCI + HNO3 and HCI + H2SO4). Under varying conditions such as specified conditions of 80°C, 0.05 mm of thickness, 3 hrs of contacttime, 80rpm shaking speed, and concentration of PCB sample of 0.5 g ml−1, it results in the composition of extracted heavy metal ions in such a way that 97.59% of copper, 96.59% of lead, 94.66% of tin, and 96.64% of zinc, respectively. The recovery of heavy metal ions from PCBs has an important leading contribution in electronic waste management and the result shows a higher rate.","PeriodicalId":267341,"journal":{"name":"Heavy Metals - New Insights [Working Title]","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123967693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of Heavy Metals on Quality of Raw Materials, Animal Products, and Human and Animal Health Status 重金属对原料质量、动物产品质量以及人与动物健康状况的影响

Heavy Metals - New Insights [Working Title] Pub Date : 2022-01-30 DOI: 10.5772/intechopen.102497

A. Bartkowiak

{"title":"Influence of Heavy Metals on Quality of Raw Materials, Animal Products, and Human and Animal Health Status","authors":"A. Bartkowiak","doi":"10.5772/intechopen.102497","DOIUrl":"https://doi.org/10.5772/intechopen.102497","url":null,"abstract":"Heavy metals constitute one of the threats to the natural environment and the health of living organisms. The sources of contamination of the environment with heavy metals are mainly industry, thermal and chemical processing of mineral resources, burning of coal, gases and liquid fuels, municipal economy (rubbish dumps, sewage), and agriculture consuming mineral fertilizers, plant protection agents, utilizing huge loads of pollution accompanying animal production. Accumulation of toxic elements in plant tissues leads to disturbances in plant reproduction and thus to lowering of their nutritional value. In humans and animals, in turn, it may cause poisoning and the occurrence of various disorders and diseases, including cancer. There are different ways to reduce the penetration of heavy metals into crops and deactivation in animal organisms—by using the tolerance of plants to heavy metals, cleaning the environment through phytoremediation, the use of antagonistic type interactions to reduce bioaccumulation in animal tissues, as well as the properties of compounds of organic and mineral origin. The aim of the chapter is to present the problems of environmental pollution and accumulation of heavy metals (mainly cadmium, mercury, and lead) in tissues of farm animals, their impact on human and animal health, as well as the possibility of inactivation of heavy metals in animal organisms.","PeriodicalId":267341,"journal":{"name":"Heavy Metals - New Insights [Working Title]","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125122952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Soil-Skeleton and Soil-Water Heavy Metal Contamination by Finite Element Modelling With Freundlich Isotherm Adsorption Parameters 基于Freundlich等温吸附参数的土壤-骨架和土壤-水重金属污染有限元模拟

Heavy Metals - New Insights [Working Title] Pub Date : 2022-01-24 DOI: 10.5772/intechopen.101828

Nguyen Van Hoang

{"title":"Soil-Skeleton and Soil-Water Heavy Metal Contamination by Finite Element Modelling With Freundlich Isotherm Adsorption Parameters","authors":"Nguyen Van Hoang","doi":"10.5772/intechopen.101828","DOIUrl":"https://doi.org/10.5772/intechopen.101828","url":null,"abstract":"World research results indicate that untreated leachate contains high contents of heavy metals (HM) that are likely to pollute the soil and groundwater (GW) environment and contribute to the increase of HMs in soil and GW. The Freundlich isotherm adsorption parameters are essential to soil input parameters for modelling of HMs’ transport to access the soil skeleton and soil pore water contamination by HMs. Finite element (FE) modelling of advection-dispersion transport of HMs by GW movement along with Freundlich isotherm adsorption parameters which continuously change with space in the model domain and with time is sophisticated to accurately evaluate the HMs’ concentrations in soil skeleton and pore water. The chapter describes the background of the existing isotherm adsorption theory, the adaptation of the Freundlich isotherm adsorption in the soil skeleton and soil pore water contamination by HMs, method of determination of the Freundlich isotherm adsorption parameters, the FE procedure of modelling of advection-dispersion transport of HMs by GW movement in general and along with Freundlich isotherm adsorption parameters in particular. A case study modelling has been demonstrated.","PeriodicalId":267341,"journal":{"name":"Heavy Metals - New Insights [Working Title]","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132560619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Heavy Metals in Cosmetics 化妆品中的重金属

Heavy Metals - New Insights [Working Title] Pub Date : 2022-01-19 DOI: 10.5772/intechopen.102406

Tamara Attard, E. Attard

{"title":"Heavy Metals in Cosmetics","authors":"Tamara Attard, E. Attard","doi":"10.5772/intechopen.102406","DOIUrl":"https://doi.org/10.5772/intechopen.102406","url":null,"abstract":"This review provides a comprehensive insight into the content of five heavy metals found in cosmetics and their effects at the site of application and on several organs via the dermal route of administration. Regulation of these products is very limited with little information on limits of these metals at the disposition of manufacturers. Lead and arsenic are considered to be contaminants in cosmetics whereas cadmium may be present as a coloring agent besides being a contaminant. Nickel is notorious for its association with allergic chronic dermatitis. Though mercury is rarely present in cosmetics, it has been found in significant quantities in skin lightening creams. A multi-variate meta-analysis was conducted to determine the relationships between the five metals and any possible differences between the sixteen categories of formulations used for facial and body skin care and cosmetic purposes. In general, lipsticks, eye shadows, face paints, make-up foundation and skin lightening creams exhibited a high amount of heavy metals superior to the levels of these metals in other facial and body products. The outcome of this analysis urges regulators and manufacturers to consider routine monitoring for the presence of these metals in cosmetics.","PeriodicalId":267341,"journal":{"name":"Heavy Metals - New Insights [Working Title]","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126921804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 16

Heavy Metal Contamination of Food Crops: Transportation via Food Chain, Human Consumption, Toxicity and Management Strategies 粮食作物重金属污染:食物链运输、人类消费、毒性和管理策略

Heavy Metals - New Insights [Working Title] Pub Date : 2022-01-18 DOI: 10.5772/intechopen.101938

Vanisree C.R., Mahipal Singh Sankhla, Prashant Singh, Ekta B. Jadhav, Rohit Kumar Verma, Kumud Kant Awasthi, G. Awasthi, Varad Nagar

引用次数: 3