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https://www.readbyqxmd.com/read/28318961/spent-lead-acid-battery-recycling-in-china-a-review-and-sustainable-analyses-on-mass-flow-of-lead
#1
REVIEW
Zhi Sun, Hongbin Cao, Xihua Zhang, Xiao Lin, Wenwen Zheng, Guoqing Cao, Yong Sun, Yi Zhang
Lead is classified to be one of the top heavy metal pollutants in China. The corresponding environmental issues especially during the management of spent lead-acid battery have already caused significant public awareness and concern. This research gives a brief overview on the recycling situation based on an investigation of the lead industry in China and also the development of technologies for spent lead-acid batteries. The main principles and research focuses of different technologies including pyrometallurgy, hydrometallurgy and greener technologies are summarized and compared...
March 15, 2017: Waste Management
https://www.readbyqxmd.com/read/28314151/cadmium-lead-and-arsenic-contamination-in-paddy-soils-of-a-mining-area-and-their-exposure-effects-on-human-hepg2-and-keratinocyte-cell-lines
#2
Shengguo Xue, Lizheng Shi, Chuan Wu, Hui Wu, Yanyan Qin, Weisong Pan, William Hartley, Mengqian Cui
A mining district in south China shows significant metal(loid) contamination in paddy fields. In the soils, average Pb, Cd and As concentrations were 460.1, 11.7 and 35.1mgkg(-1) respectively, which were higher than the environmental quality standard for agricultural soils in China (GB15618-1995) and UK Clea Soil Guideline Value. The average contents of Pb, Cd and As in rice were 5.24, 1.1 and 0.7mgkg(-1) respectively, which were about 25, 4.5 or 2.5 times greater than the limit values of the maximum safe contaminant concentration standard in food of China (GB 2762-2012), and about 25, 10 or 1 times greater than the limit values of FAO/WHO standard...
March 14, 2017: Environmental Research
https://www.readbyqxmd.com/read/28288606/monitoring-heavy-metals-residual-agricultural-chemicals-and-sulfites-in-traditional-herbal-decoctions
#3
In-Sil Yu, Jeong-Sook Lee, Sung-Dan Kim, Yun-Hee Kim, Hae-Won Park, Hoe-Jin Ryu, Jib-Ho Lee, Jeong-Mi Lee, Kweon Jung, Cheol Na, Jin-Yong Joung, Chang-Gue Son
BACKGROUND: Asian traditional herbal preparations are frequently considered for the contamination with undeclared toxic or hazardous substances. The aim of this study was to determine the toxic heavy metals, pesticides and sulfur dioxide in decoctions that is a common form of final utilization in Korea. METHODS: A total of 155 decoctions composed of multi-ingredient traditional herbs were randomly sampled from Seoul in Korea between 2013 and 2014. For each decoction, the concentrations of four heavy metals (arsenic, cadmium, lead and mercury), 33 pesticides and sulfur dioxide were analyzed using inductively coupled plasma mass spectrometry (ICP-MS), mercury analyzer, gas chromatography/nitrogen phosphorous detector (GC/NPD), gas chromatography/micro electron capture detector (GC/μECD), and Monier-Williams method respectively...
March 14, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28283225/effects-of-chlorine-on-the-volatilization-of-heavy-metals-during-the-co-combustion-of-sewage-sludge
#4
Shengrong Yu, Bin Zhang, Jiangxiong Wei, Tongsheng Zhang, Qijun Yu, Wensheng Zhang
To clarify the volatilization of heavy metals (Cu, Ni, Pb, and Zn) in sewage sludge during co-combustion in cement kiln, effects of addition and types of four chlorides and temperature on the volatilization of heavy metals in raw meal with 25wt.% sewage sludge were investigated. The results showed that the volatilization of Cu, Ni, and Pb increased significantly with increase of chlorides addition, while no obvious change in the volatilization of Zn was observed. The effectiveness of chlorides on the volatilization of heavy metals depended on their release capacity of chlorine radicals and the chlorine combined capacity of heavy metals...
March 7, 2017: Waste Management
https://www.readbyqxmd.com/read/28280790/environmental-assessment-of-al-hammar-marsh-southern-iraq
#5
Hind Fadhil Abdullah Al-Gburi, Balsam Salim Al-Tawash, Hadi Salim Al-Lafta
AIM: (a) To determine the spatial distributions and levels of major and minor elements, as well as heavy metals, in water, sediment, and biota (plant and fish) in Al-Hammar Marsh, southern Iraq, and ultimately to supply more comprehensive information for policy-makers to manage the contaminants input into the marsh so that their concentrations do not reach toxic levels. (b) to characterize the seasonal changes in the marsh surface water quality. (c) to address the potential environmental risk of these elements by comparison with the historical levels and global quality guidelines (i...
February 2017: Heliyon
https://www.readbyqxmd.com/read/28245949/atmospheric-size-resolved-trace-elements-in-a-city-affected-by-non-ferrous-metal-smelting-indications-of-respiratory-deposition-and-health-risk
#6
Yan Lyu, Kai Zhang, Fahe Chai, Tiantao Cheng, Qing Yang, Zilong Zheng, Xiang Li
This study examines size-resolved heavy metal data for particles sampled near an urban site affected by non-ferrous metal smelting in China with a focus on how particle sizes impact regional respiratory deposition behavior. Particles with aerodynamic diameters between 0.43 and 9 μm were collected during winter haze episodes from December 2011 to January 2012. The results showed that concentrations of individual trace elements ranged from ∼10(-2)-∼10(4) ng/m(3). Mass size distributions exhibit that Cu, Zn, As, Se, Ag, Cd, TI, and Pb have unimodal peak in fine particles range (<2...
February 25, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28239441/quality-and-labeling-information-of-moringa-oleifera-products-marketed-for-hiv-infected-people-in-zimbabwe
#7
Tsitsi Grace Monera-Penduka, Zvinji Tella Jani, Charles Chiedza Maponga, Josephine Mudzengi, Gene D Morse, Charles Fungai Brian Nhachi
Labeling information and quality of marketed Moringa oleifera products were assessed. Personnel in 60 pharmacies and 11 herbal shops were interviewed about the sources, dosages, indications and counseling information of Moringa oleifera products. Content analysis of written information provided on Moringa oleifera products was also done. Three samples of Moringa from popular sources were acquired to determine heavy metal content and microbial contamination. The results were compared to specified limits in the European and Chinese pharmacopeia, World Health Organization guidelines and Bureau of Indian Standards...
December 31, 2016: Journal of Public Health in Africa
https://www.readbyqxmd.com/read/28238330/assessment-of-heavy-metal-contamination-in-sediments-along-the-coast-of-south-korea-using-cs-normalized-background-concentrations
#8
Yunho Song, Man Sik Choi
To assess metal contamination in sediments along the entire coastline of South Korea, we estimated the regional background concentrations of metals and assessed the degree of contamination. Major and heavy metal concentrations, grain sizes, and sedimentation rates were analyzed. Regional background concentrations were established by identifying uncontaminated sediments in the cores, using first-order linear regression of background concentration against Cs concentration. The metal contamination of surface sediments was assessed using Korean sediment quality guidelines and a modified geo-accumulation index (Igeo(⁎))...
February 18, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28107716/occurrence-speciation-and-transportation-of-heavy-metals-in-9-coastal-rivers-from-watershed-of-laizhou-bay-china
#9
Li Xu, Tieyu Wang, Jihua Wang, Anxiang Lu
The occurrence, speciation and transport of heavy metals in 9 coastal rivers from watershed of Laizhou Bay were investigated. The largest dissolved concentrations of Cd, Cu and Zn in water were 6.26, 2755.00, 2076.00 μg/L, respectively, much higher than several drinking water guidelines. The greatest concentrations of Cu, Zn, Cr, Ni, Pb and Cd in sediments were 1462, 1602, 196, 67.2, 63.5 and 1.41 mg/kg, dw, respectively. Correlation and principal component analysis was also conducted to determine the extent between the concentrations of metals in water and sediment, as well as relevant parameters...
January 9, 2017: Chemosphere
https://www.readbyqxmd.com/read/28105597/environmental-and-ecological-risk-of-heavy-metals-in-the-marine-sediment-from-dakhla-bay-morocco
#10
Zidane Hakima, Maanan Mohamed, Mouradi Aziza, Maanan Mehdi, El Barjy Meryem, Zourarah Bendahhou, Blais Jean-Francois
Heavy metal assessment in Dakhla Bay (Atlantic coast) was carried out using different environmental and ecological indices. Heavy metal concentrations were measured using ICP-AES and were compared with consensus-based sediment quality guidelines. The distribution of heavy metal concentrations varies for the three groups: (i) lead distribution is dominated by its associations with copper and chromium. These elements have the same source, most probably related to anthropogenic activities. (ii) Nickel, zinc and cobalt are associated with aluminium and iron indicating their terrigenous origin (natural content), and (iii) cadmium concentration is related to upwelling currents...
January 20, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28105592/investigation-of-heavy-metal-pollution-in-eastern-aegean-sea-coastal-waters-by-using-cystoseira-barbata-patella-caerulea-and-liza-aurata-as-biological-indicators
#11
S Aydın-Önen, M Öztürk
In order to have an extensive contamination profile of heavy metal levels (Cd, Cu, Fe, Mn, Ni, Pb, and Zn), seawater, sediment, Patella caerulea, Cystoseira barbata, and Liza aurata were investigated by using inductively coupled plasma-atomic emission spectrometry (ICP-AES). Samples were collected from five coastal stations along the eastern Aegean Sea coast (Turkey) on a monthly basis from July 2002 through May 2003. According to the results of this study, heavy metal levels were arranged in the following sequence: Fe > Pb > Zn > Mn > Ni > Cu > Cd for water, Fe > Cu > Mn > Ni > Zn > Pb > Cd for sediment, Fe > Zn > Mn > Pb > Ni > Cd > Cu for C...
January 19, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28029481/industrial-metal-pollution-in-water-and-probabilistic-assessment-of-human-health-risk
#12
Narottam Saha, M Safiur Rahman, Mohammad Boshir Ahmed, John L Zhou, Huu Hao Ngo, Wenshan Guo
Concentration of eight heavy metals in surface and groundwater around Dhaka Export Processing Zone (DEPZ) industrial area were investigated, and the health risk posed to local children and adult residents via ingestion and dermal contact was evaluated using deterministic and probabilistic approaches. Metal concentrations (except Cu, Mn, Ni, and Zn) in Bangshi River water were above the drinking water quality guidelines, while in groundwater were less than the recommended limits. Concentration of metals in surface water decreased as a function of distance...
October 28, 2016: Journal of Environmental Management
https://www.readbyqxmd.com/read/28007388/geochemical-distribution-fractionation-and-contamination-assessment-of-heavy-metals-in-marine-sediments-of-the-asaluyeh-port-persian-gulf
#13
Hossein Delshab, Parvin Farshchi, Behnam Keshavarzi
In this study, total concentration and speciation of heavy metals in sediments of the Asaluyeh, one of the Iran's largest commercial ports, are investigated. 48 sediment samples were collected and analyzed for trace and major elements. Sediment quality guidelines along with calculated enrichment factors and trace metal profiles indicate that Asaluyeh port is threated by contamination, especially with respect to Hg and Cu. Normalization to Sc indicated high enrichment factors in the sediments following the decreasing order of: Hg>Cu>As>Ni>Zn>Pb≈Cr≈Mn>Co≈V≈Fe≈Al...
December 19, 2016: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/27984849/composition-of-unrecorded-distilled-alcohol-bai-jiu-produced-in-small-rural-factories-in-central-china
#14
Ian Newman, Ling Qian, Niran Tamrakar, Yonghua Feng, Ganrong Xu
BACKGROUND: Unrecorded traditional distilled spirits (bai jiu, ) are made and used throughout rural China for everyday use and special occasions. Nearly every town or village has a distiller to supply the demand. In rural China, distilling bai jiu is legal and regulated lightly or not at all. The World Health Organization estimates that as much as 25% of all alcohol consumed in China is unrecorded alcohol, of which an unknown portion is unrecorded bai jiu. Little is known about the composition of unrecorded Chinese spirits from rural parts of the country...
January 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/27942760/multivariate-analyses-of-heavy-metals-in-surface-soil-around-an-organized-industrial-area-in-eskisehir-turkey
#15
S Malkoc, B Yazici
A total of 50 surface industrial area soil in Eskisehir, Turkey were collected and the concentrations of As, Cr, Cd, Co, Cu, Ni, Pb, Zn, Fe and Mg, at 11.34, 95.8, 1.37, 15.28, 33.06, 143.65, 14.34, 78.79 mg/kg, 188.80% and 78.70%, respectively. The EF values for As, Cu, Pb and Zn at a number of sampling sites were found to be the highest among metals. Igeo-index results show that the study area is moderately polluted with respect to As, Cd, Ni. According to guideline values of Turkey Environmental Quality Standard for Soils, there is no problem for Pb, but the Cd values are fairly high...
February 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/27939687/spatial-distribution-risk-assessment-and-source-identification-of-heavy-metals-in-sediments-of-the-yangtze-river-estuary-china
#16
Deming Han, Jinping Cheng, Xianfeng Hu, Zhenyi Jiang, Lei Mo, Hao Xu, Yuning Ma, Xiaojia Chen, Heling Wang
The aim of this study was to determine the spatial distribution, potential risks and sources of seven heavy metals in sediments of the Yangtze River Estuary. Analyses of 55 sediment samples revealed that the distributions of metals within the YRE were determined by the combined effects of their sources, hydrodynamic conditions, pH and Eh. According to the geoaccumulation index (Igeo) and sediment quality guidelines, Pb, Cd and Cr were present at low levels of pollution, with Cd posing the largest ecological risk...
December 7, 2016: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/27934187/3d-printed-microfluidic-device-with-microporous-mn2o3-modified-screen-printed-electrode-for-real-time-determination-of-heavy-metal-ions
#17
Ying Hong, Meiyan Wu, Guangwei Chen, Ziyang Dai, Yizhou Zhang, Guosong Chen, Xiaochen Dong
Fabricating portable devices for the determination of heavy metal ions is an ongoing challenge. Here, a 3D printing approach was adopted to fabricate a microfluidic electrochemical sensor with the desired shape in which the model for velocity profiles in microfluidic cells was built and optimized by the finite element method (FEM). The electrode in the microfluidic cell was a flexible screen-printed electrode (SPE) modified with porous Mn2O3 derived from manganese containing metal-organic framework (Mn-MOF)...
December 7, 2016: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/27887731/assessment-of-heavy-metal-pollution-in-surface-sediments-of-the-bayan-lepas-area-penang-malaysia
#18
Sharareh Khodami, Misni Surif, Wan Maznah W O, Reza Daryanabard
This study aimed to evaluate the spatial and temporal distribution of heavy metals (Cd, Cr, Cu, Co, Fe, Pb, Ni, V, and Zn) in the sediments of Bayan Lepas Free Industrial Zone of Penang, Malaysia. Ten sampling stations were selected and sediment samples were collected during low tide (2012-2013). Metals were analyzed and the spatial distribution of metals were evaluated based on GIS mapping. According to interim sediment quality guidelines (ISQG), metal contents ranged from below low level to above high level at different stations...
January 15, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/27863880/fractionation-of-heavy-metals-in-sediments-and-assessment-of-their-availability-risk-a-case-study-in-the-northwestern-of-persian-gulf
#19
Amirhossein Pejman, Gholamreza Nabi Bidhendi, Mojtaba Ardestani, Mohsen Saeedi, Akbar Baghvand
Sequential extraction procedure was applied to determine the chemical forms of heavy metals in sediments in order to assess their mobility and availability in the aquatic environment. The mean concentrations of Cr, Ni, Pb, Cd, Cu and Zn in exchangeable and carbonate fractions were 14.9, 30.9, 17, 0.37, 4.4 and 14.4mg/kg, respectively. Based on the sediments quality guidelines (SQGs), the adverse biological effects caused by Ni, can occur frequently across the study area. Risk assessment code (RAC) suggested that the Cd has the highest level of environmental risk compared with other studied metals...
January 30, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/27855343/removing-heavy-metals-using-permeable-pavement-system-with-a-titanate-nano-fibrous-adsorbent-column-as-a-post-treatment
#20
Danious Pratheep Sounthararajah, Paripurnanda Loganathan, Jayakumar Kandasamy, Saravanamuthu Vigneswaran
Permeable pavement systems (PPS) are a widely-used treatment measure in sustainable stormwater management and groundwater recharge. However, PPS are not very efficient in removing heavy metals from stormwater. A pilot scale study using zeolite or basalt as bed material in PPS removed 41-72%, 67-74%, 38-43%, 61-72%, 63-73% of Cd, Cu, Ni, Pb, and Zn, respectively, from synthetic stormwater (pH 6.5; Cd, Cu, Ni, Pb, and Zn concentrations of 0.04, 0.6, 0.06, 1.0, and 2.0 mg L(-1), respectively) over a period of 80 h...
February 2017: Chemosphere
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