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https://www.readbyqxmd.com/read/28646779/polychlorinated-biphenyls-in-the-surrounding-of-an-e-waste-recycling-facility-in-north-rhine-westphalia-levels-in-plants-and-dusts-spatial-distribution-homologue-pattern-and-source-identification-using-the-combination-of-plants-and-wind-direction-data
#1
Marcel Klees, Katja Hombrecher, Dieter Gladtke
During this study the occurrence of polychlorinated biphenyls (PCBs) in the surrounding of an e-waste recycling facility in North-Rhine Westphalia was analysed. PCB levels were analysed in curly kale, spruce needles, street dusts and dusts. Conspicuously high PCB concentrations in curly kale and spruce needles were found directly northwards of the industrial premises. Furthermore a concentration gradient originating from the industrial premises to the residential areas in direction southwest to northeast was evident...
June 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28629970/variation-analysis-of-bacterial-polyhydroxyalkanoates-production-using-saturated-and-unsaturated-hydrocarbons
#2
Saiqa Tufail, Sajida Munir, Nazia Jamil
Polyhydroxyalkanoates (PHA) are efficient, renewable and environment friendly polymeric esters. These polymers are synthesized by a variety of microbes under stress conditions. This study was carried out to check the suitability of waste frying oil in comparison to other oils for economical bioplastic production. Six bacterial strains were isolated and identified as Bacillus cereus (KF270349), Klebsiella pneumoniae (KF270350), Bacillus subtilis (KF270351), Brevibacterium halotolerance (KF270352), Pseudomonas aeruginosa (KF270353), and Stenotrophomonas rhizoposid (KF270354) by ribotyping...
May 29, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/28623427/blood-concentrations-of-lead-cadmium-mercury-and-their-association-with-biomarkers-of-dna-oxidative-damage-in-preschool-children-living-in-an-e-waste-recycling-area
#3
Xijin Xu, Weitang Liao, Yucong Lin, Yifeng Dai, Zhihua Shi, Xia Huo
Reactive oxygen species (ROS)-induced DNA damage occurs in heavy metal exposure, but the simultaneous effect on DNA repair is unknown. We investigated the influence of co-exposure of lead (Pb), cadmium (Cd), and mercury (Hg) on 8-hydroxydeoxyguanosine (8-OHdG) and human repair enzyme 8-oxoguanine DNA glycosylase (hOGG1) mRNA levels in exposed children to evaluate the imbalance of DNA damage and repair. Children within the age range of 3-6 years from a primitive electronic waste (e-waste) recycling town were chosen as participants to represent a heavy metal-exposed population...
June 16, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28609845/-away-is-a-place-the-impact-of-electronic-waste-recycling-on-blood-lead-levels-in-ghana
#4
Ebenezer Forkuo Amankwaa, Kwame A Adovor Tsikudo, John Bowman
E-waste recycling remains a major source of livelihood for many urban poor in developing countries, but this economic activity is fraught with significant environmental health risk. Yet, human exposure to the toxic elements associated with e-waste activities remains understudied and not evidently understood. This study investigates the impact of informal e-waste processing on the blood lead levels (BLLs) of e-waste workers and non-e-waste workers (mainly females working in activities that serve the Agbogbloshie e-waste site), and relates their lead exposure to socio-demographic and occupational characteristics...
June 8, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28589272/heavy-metals-distribution-and-risk-assessment-in-soil-from-an-informal-e-waste-recycling-site-in-lagos-state-nigeria
#5
Khadijah A Isimekhai, Hemda Garelick, John Watt, Diane Purchase
Informal E-waste recycling can pose a risk to human health and the environment which this study endeavours to evaluate. The distribution of a number of heavy metals in soil from an informal recycling site in the largest market for used and new electronics and electrical equipment in West Africa was investigated. The potential bioavailability of heavy metals, extent of contamination, potential risk due to the recycling activities and impact of external factors such as rainfall were also assessed. The concentrations of all the heavy metals tested were higher in the area where burning of the waste occurred than at the control site, suggesting an impact of the recycling activities on the soil...
June 6, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28579144/e-waste-collection-in-italy-results-from-an-exploratory-analysis
#6
Marinella Favot, Luca Grassetti
This study looks at the performance of household electrical and electronic waste (WEEE) collection in 20 Italian regions from 2008 to 2015. The impact of several explicative variables on the results of e-waste collection is evaluated. The independent variables are socio-economic and demographic ones (age, gender, household size, education level, migration and income) along with technical-organisational variables (population density, presence of metropoles, macro regions, characteristics of the territory, percentage of household waste collected separately and number of e-waste collection points)...
May 31, 2017: Waste Management
https://www.readbyqxmd.com/read/28554111/retrieval-of-au-ag-cu-precious-metals-coupled-with-electric-energy-production-via-an-unconventional-coupled-redox-fuel-cell-reactor
#7
Hui-Min Zhang, Zheng Fan, Wei Xu, Xiao Feng, Zu-Cheng Wu
The recovery of heavy metals from aqueous solutions or e-wastes is of upmost importance. Retrieval of Au, Ag, and Cu with electricity generation through building an ethanol-metal coupled redox fuel cells (CRFCs) is demonstrated. The cell was uniquely assembled on PdNi/C anode the electro-oxidation of ethanol takes place to give electrons and then go through the external circuit reducing metal ions to metallic on the cathode, metals are recovered. Taking an example of removal of 100mgL(-1) gold in 0.5M HAc-NaAc buffer solution as the catholyte, 2...
May 12, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28549288/ecological-effects-of-soil-properties-and-metal-concentrations-on-the-composition-and-diversity-of-microbial-communities-associated-with-land-use-patterns-in-an-electronic-waste-recycling-region
#8
Wencheng Wu, Changxun Dong, Jiahui Wu, Xiaowen Liu, Yingxin Wu, Xianbin Chen, Shixiao Yu
Soil microbes play vital roles in ecosystem functions, and soil microbial communities may be strongly structured by land use patterns associated with electronic waste (e-waste) recycling activities, which can increase the heavy metal concentration in soils. In this study, a suite of soils from five land use types (paddy field, vegetable field, dry field, forest field, and e-waste recycling site) were collected in Longtang Town, Guangdong Province, South China. Soil physicochemical properties and heavy metal concentrations were measured, and the indigenous microbial assemblages were profiled using 16S rRNA high-throughput sequencing and clone library analyses...
May 23, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28532622/solid-waste-generation-and-characterization-in-the-university-of-lagos-for-a-sustainable-waste-management
#9
A E Adeniran, A T Nubi, A O Adelopo
Waste characterization is the first step to any successful waste management policy. In this paper, the characterization and the trend of solid waste generated in University of Lagos, Nigeria was carried out using ASTM D5231-92 and Resource Conservation Reservation Authority RCRA Waste Sampling Draft Technical Guidance methods. The recyclable potential of the waste is very high constituting about 75% of the total waste generated. The estimated average daily solid waste generation in Unilag Akoka campus was estimated to be 32...
May 19, 2017: Waste Management
https://www.readbyqxmd.com/read/28521210/selective-thermal-transformation-of-old-computer-printed-circuit-boards-to-cu-sn-based-alloy
#10
Ali Shokri, Farshid Pahlevani, Ivan Cole, Veena Sahajwalla
This study investigates, verifies and determines the optimal parameters for the selective thermal transformation of problematic electronic waste (e-waste) to produce value-added copper-tin (Cu-Sn) based alloys; thereby demonstrating a novel new pathway for the cost-effective recovery of resources from one of the world's fastest growing and most challenging waste streams. Using outdated computer printed circuit boards (PCBs), a ubiquitous component of e-waste, we investigated transformations across a range of temperatures and time frames...
September 1, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28482316/a-pilot-study-on-health-risk-assessment-based-on-body-loadings-of-pcbs-of-lactating-mothers-at-taizhou-china-the-world-s-major-site-for-recycling-transformers
#11
Yu Bon Man, Ka Lai Chow, Guan Hua Xing, Janet Kit Yan Chan, Sheng Chun Wu, Ming Hung Wong
Our early study reported an extraordinarily high Estimated Daily Intake (EDI) of PCBs of lactating mothers from Taizhou, Zhejiang Province, China (based on a food consumption survey and food basket analysis). The EDI well exceeded the intake limit stipulated by FAO/WHO 70 pg TEQ/kg body weight (bw)/month. The present pilot study provided further information on PCBs body burden in lactating mothers of Taizhou. The total PCBs detected in human milk, placenta and hair samples of these lactating mothers were 363 ng/g lipid, 224 ng/g lipid, and 386 ng/g dry wt...
August 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28477162/polychlorinated-biphenyls-and-their-hydroxylated-metabolites-in-the-serum-of-e-waste-dismantling-workers-from-eastern-china
#12
Shengtao Ma, Guofa Ren, Xiangying Zeng, Zhiqiang Yu, Guoying Sheng, Jiamo Fu
A number of studies have reported on the exposure of e-waste dismantling workers to significantly high concentrations of halogenated organic pollutants such as polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers. Such exposure can have adverse health effects. However, little information on the metabolites of these contaminants exists. In this study, we investigated PCBs levels and their hydroxylated metabolites (OH-PCB) in the serum of e-waste workers in Taizhou in eastern China. Our results indicate elevated PCB and OH-PCB levels in the serum of the workers, with medians of 443...
May 5, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28438268/fungal-biorecovery-of-gold-from-e-waste
#13
Saskia Bindschedler, Thi Quynh Trang Vu Bouquet, Daniel Job, Edith Joseph, Pilar Junier
Waste electric and electronic devices (e-waste) represent a source of valuable raw materials of great interest, and in the case of metals, e-waste might become a prized alternative source. Regarding gold, natural ores are difficult to mine due to their refractory nature and the richest ores have almost all been exploited. Additionally, some gold mining areas are present in geopolitically unstable regions. Finally, the gold mining industry produces toxic compounds, such as cyanides. As a result, the gold present in e-waste represents a nonnegligible resource (urban mining)...
2017: Advances in Applied Microbiology
https://www.readbyqxmd.com/read/28390022/treatment-of-decabromodiphenyl-ether-bde209-contaminated-soil-by-solubilizer-enhanced-electrokinetics-coupled-with-zvi-prb
#14
Rongbing Fu, Dongdong Wen, Xing Chen, Yingying Gu, Zhen Xu, Wei Zhang
Decabromodiphenyl ether (BDE209) is a typical soil contaminant released from e-waste recycling sites (EWRSs). Electrokinetics (EK) has been considered as an excellent treatment technology with a promising potential to effectively remove organic pollutants in soil. In this study, the treatment of BDE209-polluted soil by EK was explored. All the EK experiments were conducted under a constant voltage gradient (2 V cm(-1)) for 14 days. Deionized water (DI water), hydroxypropyl-β-cyclodextrin (HPCD), sodium dodecyl sulfate (SDS), and humic acid (HA) were applied as the processing fluid...
May 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28353403/the-urgent-need-for-health-impact-assessment-proposing-a-transdisciplinary-approach-to-the-e-waste-crisis-in-sub-saharan-africa
#15
Dinah Tetteh, Lara Lengel
Electronic waste (e-waste) is a growing health and environmental concern in developing countries. In the sub-Saharan African region e-waste is considered a crisis with no end in sight yet; there is lack of structures and regulations to manage the problem. In this article, we discuss the potential of Health Impact Assessment (HIA) in addressing the health, environmental, and social impacts of e-waste in sub-Saharan Africa. We draw from environmental policy, environmental communication, global health policy, and health communication to argue that managing e-waste could be framed as ongoing HIA where all the steps of HIA are performed on a rolling basis with input from local communities...
March 1, 2017: Global Health Promotion
https://www.readbyqxmd.com/read/28343715/occurrence-profiles-and-toxic-equivalents-of-chlorinated-and-brominated-polycyclic-aromatic-hydrocarbons-in-e-waste-open-burning-soils
#16
Chiya Nishimura, Yuichi Horii, Shuhei Tanaka, Kwadwo Ansong Asante, Florencio Ballesteros, Pham Hung Viet, Takaaki Itai, Hidetaka Takigami, Shinsuke Tanabe, Takashi Fujimori
We conducted this study to assess the occurrence, profiles, and toxicity of chlorinated polycyclic aromatic hydrocarbons (Cl-PAHs) and brominated polycyclic aromatic hydrocarbons (Br-PAHs) in e-waste open burning soils (EOBS). In this study, concentrations of 15 PAHs, 26 Cl-PAHs and 14 Br-PAHs were analyzed in EOBS samples. We found that e-waste open burning is an important emission source of Cl-PAHs and Br-PAHs as well as PAHs. Concentrations of total Cl-PAHs and Br-PAHs in e-waste open burning soil samples ranged from 21 to 2800 ng/g and from 5...
March 23, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28320621/global-reverse-supply-chain-design-for-solid-waste-recycling-under-uncertainties-and-carbon-emission-constraint
#17
Zhitao Xu, Adel Elomri, Shaligram Pokharel, Qin Zhang, X G Ming, Wenjie Liu
The emergence of concerns over environmental protection, resource conservation as well as the development of logistics operations and manufacturing technology has led several countries to implement formal collection and recycling systems of solid waste. Such recycling system has the benefits of reducing environmental pollution, boosting the economy by creating new jobs, and generating income from trading the recyclable materials. This leads to the formation of a global reverse supply chain (GRSC) of solid waste...
March 18, 2017: Waste Management
https://www.readbyqxmd.com/read/28301822/elevated-lead-levels-and-changes-in-blood-morphology-and-erythrocyte-cr1-in-preschool-children-from-an-e-waste-area
#18
Yifeng Dai, Xia Huo, Yu Zhang, Tian Yang, Minghui Li, Xijin Xu
Improper dismantling and combustion of electronic waste (e-waste) may release persistent organic pollutants and heavy metals that possess potential risk for human health. Lead (Pb) is carried through the circulatory system by erythrocytes and is known to alter the functions of hematopoietic and immune systems. The aim of the study was to investigate the effect of Pb exposure on blood morphology and erythrocyte complement receptor 1 (CR1) levels as related to immunologic function in preschool children. We recruited 484 preschool children, 2- to 6-years of age, among whom 332 children were from Guiyu, a typical and primitive e-waste processing area, and 152 children from Haojiang (reference area)...
March 13, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28285732/a-novel-approach-for-reducing-toxic-emissions-during-high-temperature-processing-of-electronic-waste
#19
R Saini, R Khanna, R K Dutta, R Cayumil, M Ikram-Ul-Haq, V Agarwala, G Ellamparuthy, K Jayasankar, P S Mukherjee, V Sahajwalla
A novel approach is presented to capture some of the potentially toxic elements (PTEs), other particulates and emissions during the heat treatment of e-waste using alumina adsorbents. Waste PCBs from mobile phones were mechanically crushed to sizes less than 1mm; their thermal degradation was investigated using thermo-gravimetric analysis. Observed weight loss was attributed to the degradation of polymers and the vaporization of organic constituents and volatile metals. The sample assembly containing PCB powder and adsorbent was heat treated at 600°C for times ranging between 10 and 30min with air, nitrogen and argon as carrier gases...
March 9, 2017: Waste Management
https://www.readbyqxmd.com/read/28254720/organic-contaminants-and-heavy-metals-in-indoor-dust-from-e-waste-recycling-rural-and-urban-areas-in-south-china-spatial-characteristics-and-implications-for-human-exposure
#20
Chun-Tao He, Xiao-Bo Zheng, Xiao Yan, Jing Zheng, Mei-Huan Wang, Xiao Tan, Lin Qiao, She-Jun Chen, Zhong-Yi Yang, Bi-Xian Mai
The concentrations of several organic contaminants (OCs) and heavy metals were measured in indoor dust from e-waste recycling, rural, and urban areas in South China to illustrate the spatial characteristics of these pollutants and to further evaluate human exposure risks. The median concentrations of polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), decabromodiphenyl ethane (DBDPE), and dechlorane plus (DPs) were 38.6-3560, 2360-30,100, 665-2720, and 19.5-1860ng/g, while the median concentrations of Cd, Pb, Cu, Cr, and Zn were 2...
June 2017: Ecotoxicology and Environmental Safety
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