scholarly journals Heavy Metal Accumulation in Water, Soil, and Plants of Municipal Solid Waste Landfill in Vientiane, Laos

2018 ◽  
Vol 16 (1) ◽  
pp. 22 ◽  
Author(s):  
Noudeng Vongdala ◽  
Hoang-Dung Tran ◽  
Tran Xuan ◽  
Rolf Teschke ◽  
Tran Khanh
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Heavy Metal Accumulation ◽  
World Health ◽  
Pennisetum Purpureum ◽  
Risk Level ◽  
Plant Parts ◽  
Msw Landfill ◽  
Health Organization ◽  
National Environmental

The municipal solid waste (MSW) landfill in Vientiane, Laos, which receives > 300 tons of waste daily, of which approximately 50% is organic matter, has caused serious environmental problems. This study was conducted to investigate the accumulated levels of heavy metals (HMs) (cadmium (Cd), chromium (Cr), copper (Cu), nickel (Ni), lead (Pb), and zinc (Zn)) in water (surface and groundwater), soil, and plants between dry and wet seasons according to the standards of the Agreement on the National Environmental Standards of Laos (ANESs), Dutch Pollutant Standards (DPSs), and the World Health Organization (WHO), respectively. Although no impact of pollution on the surface water was observed, the levels of Cr and Pb in the groundwater significantly exceeded the basics of ANESs and WHO in both seasons. The pollution caused by Cd and Cu reached the eco-toxicological risk level in the landfill soils and its vicinity. The vegetable Ipomoea aquatica, which is consumed by the nearby villagers, was seriously contaminated by Cr, Pb, Cu, and Zn, as the accumulation of these toxic metals was elevated to much greater levels as compared to the WHO standards. For the grass Pennisetum purpureum (elephant grass), the quantities of HMs in all plant parts were extreme, perhaps due to the deeper growth of its rhizome than I. aquatica. This study is the first to warn of serious HM pollution occurring in the water, soil, and plants in the MSW landfill of Vientiane, Laos, which requires urgent phytoremediation. The indication of what sources from the MSW principally cause the pollution of HMs is needed to help reduce the toxicological risks on Lao residents and the environment in Vientiane as well.

scholarly journals Evaluation of Groundwater Quality in the Vicinity of Khurrianwala Industrial Zone, Pakistan

Water ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 1321 ◽  
Author(s):  
Muhammad Aleem ◽  
Cao Shun ◽  
Chao Li ◽  
Arslan Aslam ◽  
Wu Yang ◽  
...  
Keyword(s):  
Water Quality ◽  
Groundwater Quality ◽  
Anthropogenic Activities ◽  
World Health ◽  
Total Hardness ◽  
Industrial Zone ◽  
High Concentration ◽  
Physico Chemical ◽  
Health Organization ◽  
National Environmental

The industrial augmentation and unguided anthropogenic activities contaminate water sources in most parts of the world especially in developing countries like Pakistan. High concentration of pollutants in groundwater affects human, soil, and crop health badly. The present study was conducted to investigate groundwater quality for drinking and irrigation purposes in an industrial zone of Pakistan. A GIS tool was used to investigate the spatial distribution of different physico-chemical parameters. In this study, the average results exceeding World Health Organization (WHO) and National Environmental Quality Standards (NEQS) were found for pH 7.84, total dissolved solids (TDS) 1492 mg/L, phosphate 0.51 mg/L, dissolved oxygen (DO) 9.92% saturation, F-coli 6.48 colonies/100 mL, Na+ 366 mg/L, HCO3− 771 mg/L, sulfate 251 mg/L, chlorides 427 mg/L, total hardness (as CaCO3) 292 mg/L, electrical conductivity (EC) 2408 μS/cm, iron (Fe) 0.48 mg/L, chrome (Cr) 0.50 mg/L, arsenic (As) 0.04 mg/L, total phosphorus (TP) 0.17 mg/L, sodium adsorption ratio (SAR) 9.76 (in meq/L), residual sodium carbonate (RSC) 9.28 meq/L, % ion balance 14.4 (in meq/L), percentage sodium ion (% Na+) concentration 58.9 meq/L, and water quality index (WQI) 69.0. The trend of cations and anions were (in meq/L) Na > Mg > Ca > K and HCO3 > Cl > CO3 > SO4 respectively. Although the results of the present study showed poor conditions of the groundwater for drinking as WQI but and irrigation purposes as SAR, it needs to improve some more conditions for the provision of safe drinking water and irrigation water quality.

Municipal solid waste (MSW) landfill: A source of microplastics? -Evidence of microplastics in landfill leachate

2019 ◽  
Vol 159 ◽  
pp. 38-45 ◽  
Author(s):  
Pinjing He ◽  
Liyao Chen ◽  
Liming Shao ◽  
Hua Zhang ◽  
Fan Lü
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Landfill Leachate ◽  
Msw Landfill

scholarly journals Biosorption of lead, chromium and cadmium in tannery effluent using indigenous microorganisms

2018 ◽  
Vol 5 (9) ◽  
pp. 25-32 ◽  
Author(s):  
O. P. Abioye ◽  
O. A. Oyewole ◽  
S. B. Oyeleke ◽  
M. O. Adeyemi ◽  
A. A. Orukotan
Keyword(s):  
Pollution Control ◽  
Environmental Protection Agency ◽  
World Health ◽  
Tannery Effluent ◽  
Indigenous Microorganisms ◽  
Tannery Effluents ◽  
Penicillium Sp ◽  
Central Pollution Control Board ◽  
Health Organization ◽  
National Environmental

This study investigated the biosorption of lead, chromium and cadmium in tannery effluent using indigenous microorganisms. Bacteria isolated from the tannery effluent were Bacillus subtilis and B. megaterium while fungi isolated were Aspergillus niger and Penicillium sp. The microorganisms were tested for their ability to reduce the concentration of the heavy metals in the tannery effluent using conventional methods. B. megaterium recorded the highest lead reduction (2.13 to 0.03 mg/L), followed by B. subtilis (2.13-0.04 mg/L). A. niger recorded the highest ability to reduce the concentration of chromium (1.38-0.08 mg/L) followed by Penicillium sp. (1.38 0.13 mg/L) while B. subtilis exhibited the highest ability to reduce the concentration of cadmium (0.4-0.03 mg/L) followed by B. megaterium (0.04-0.06 mg/L) after 20 days. When these values were compared to standard limits of Federal Environmental Protection Agency (FEPA), World Health Organization (WHO), National Environmental Standard and Regulations Enforcement Agency (NESREA) and Central Pollution Control Board (CPCB), the isolates recorded an acceptable reduction in the concentration of lead, chromium and cadmium in sterile and unsterile tannery effluent. The results of this showed that the isolates reduced the concentration of lead, chromium and cadmium present in the sterile and raw tannery effluent and suggest that the organisms can be used as a possible treatment of tannery effluents.

scholarly journals Prognostic Role of FGFR3 Expression Status and Tumor-Related MicroRNAs Level in Association with PD-L1 Expression in Primary Luminal Non-Muscular Invasive Bladder Carcinoma

Life ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 305
Author(s):  
Ekaterina Blinova ◽  
Anton Buzdin ◽  
Dmitry Enikeev ◽  
Dmitry Roshchin ◽  
Maria Suntsova ◽  
...  
Keyword(s):  
Bladder Carcinoma ◽  
Molecular Subtype ◽  
Tumor Grade ◽  
World Health ◽  
Risk Level ◽  
Low Grade ◽  
European Organization ◽  
Fgfr3 Gene ◽  
Health Organization ◽  
Tissue Specimens

Background: bladder cancer is one of the most common urinary tract malignancies. Establishment of robust predictors of disease progression and outcome is important for personalizing treatment of non-muscular invasive bladder carcinoma (NMIBC). In this study we evaluated association of PD-L1 expression with other prognostic biomarkers, such as expression of miRNA-145 and miRNA-200a, FGFR3 gene expression, and mutation status in tissue specimens of the luminal subtype of newly diagnosed high and low grade NMIBC. Methods: twenty patients with primary luminal NMIBC were enrolled in the study. Tumor grade and risk level were determined in accordance with European Organization for Research and Treatment of Cancer (EORTC) guidelines and World Health Organization (WHO) classification. Neoplasm molecular subtype and PD-L1 expression level were assessed by immunohistochemistry. We used real-time PCR to evaluate the expression of microRNAs and FGFR3. We detected FGFR3 hotspot mutations in codons 248 and 249 by Sanger sequencing. Results: high grade primary luminal NMIBC showed comparatively higher expression of PD-L1 and microRNA-145 than a low grade tumor, whereas the latter had a higher FGFR3 expression and hotspot mutation rate. The tumor grade (HR = 571.72 [11.03–2.96] p = 0.002), PD-L1 expression (HR = 2.33 [0.92–1.92] p = 0.012), and FGFR3 expression (HR = 0.08 [0.17–0.42] p = 0.003) were associated with relapse-free survival. Conclusions: tumor grade in association with PD-L1 and FGFR3 expression can be considered as a complex predictor for primary luminal NMIBC progression.

Criteria for Choosing a Set of Technical Measures to Reduce Emissions on Municipal Solid Waste Landfills

2018 ◽  
Vol 22 (9) ◽  
pp. 52-57
Author(s):  
Yu.V. Zavizion ◽  
N.N. Slyusar ◽  
V.N. Korotaev
Keyword(s):  
Life Cycle ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Water Infiltration ◽  
Solid Waste Disposal ◽  
Environmental Objects ◽  
Msw Landfill ◽  
Municipal Solid Waste Landfills ◽  
The Impact ◽  
Technical Measures

The analysis of technical measures allowing to control the municipal solid waste disposal (MSW) landfill with the purpose of emission reduction at different stages of the life cycle is presented. The review of the latest research in the field of implementation of technical measures at the operational and aftercare period is conducted: controlled water infiltration, collection of biogas, aeration of the landfill body, installation of methane oxidation cover systems. It is substantiated that the choice of a technical measure for management of the disposal for MSW landfill should be carried out taking into account the ultimate goal: reduction of biogas and leachate emissions, acceleration of waste decomposition processes, reduction of the impact of the landfill on environmental objects at the aftercare period. Criteria for choosing technical measures for reduction biogas and leachate emissions, boundary conditions and peculiarities of their implementation at different stages of the life cycle of the landfill have been established.

scholarly journals Mobile health approaches to disease surveillance in Africa; Wellvis COVID triage tool

2021 ◽  
Vol 7 ◽  
pp. 205520762199687
Author(s):  
Ayomide Owoyemi ◽  
Ron Ikpe ◽  
Mariam Toye ◽  
Ayesan Rewane ◽  
Moshood Abdullateef ◽  
...  
Keyword(s):  
Disease Surveillance ◽  
Prevention And Control ◽  
World Health ◽  
Risk Level ◽  
Case Definitions ◽  
Response System ◽  
The World ◽  
Mobile Phone Applications ◽  
Health Organization ◽  
And Control

COVID-19 has rapidly spread across the globe and was declared a pandemic by the World Health Organization (WHO). The COVID-19 infection continues to spread across Africa. In Africa, mobile phone applications have been used for the surveillance and reporting of infectious diseases such as malaria, measles, polio, and other notifiable diseases as mandated by the WHO. A good example is the early warning alert and response system. We developed an eight-question triage tool using the Nigerian Centre for Disease Control surveillance case definitions for new coronavirus disease. Based on the assessed risk level we offered advice and guidance on the next steps. A user-administered tool such as this is vital to COVID19 control. It is also significant in relieving the burden on health systems, providing information on national health guidelines for prevention and control, fostering the participation of citizens, and giving them the next steps, pandemic control efforts become more effective.

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