Clean-up time! PCB-filled transformers: environmental threat and commercial opportunity

2002 ◽  
Vol 11 (6) ◽  
pp. 227-230
Author(s):  
D. Neupert
Keyword(s):  
Environmental Threat ◽  
Commercial Opportunity

An analysis of major environmental threats to human security in Nepal

2020 ◽  
Vol 4 (1) ◽  
pp. 129-139
Author(s):  
Naresh Bhakta Adhikari
Keyword(s):  
Climate Change ◽  
Agricultural Production ◽  
Human Security ◽  
Well Being ◽  
Environmental Security ◽  
Government Action ◽  
Environmental Threats ◽  
Environmental Threat ◽  
Analytical Research ◽  
The Government

The paper mainly analyses the environmental threats focusing on climate change to human security in Nepal. Major aspects of human security are interlinked and interconnected in our context. Among them, human security offers much to the vibrant field of environmental security in Nepal. Environmental threats are linked to the overall impact on human survival, well-being, and productivity. A great deal of human security is tied to peoples’ access to natural resources and vulnerabilities to environmental change. The major environmental threats in our context is the climate change which have widespread implications for Nepal, causing impacts to water availability, agricultural production, forestry, among many other detrimental effects. The critical threat of environmental security needs to be taken into serious consideration to save our succeeding generation. This article primarily interpreted the government action towards emerging environmental threat based on realist approach. For the study of theme of this article, descriptive and analytical research has been used to draw present major environmental threats in Nepal. With consideration to factors, this article attempted to identify the major environmentally vulnerable areas that are likely to hamper the overall status of human security in Nepal. This paper also tried to suggest the measures to enhance the environmental security considering prospects and policy focusing on Nepalese diverse aspects.

scholarly journals Plastic waste to fuels by hydrocracking at mild conditions

2021 ◽  
Vol 7 (17) ◽  
pp. eabf8283
Author(s):  
Sibao Liu ◽  
Pavel A. Kots ◽  
Brandon C. Vance ◽  
Andrew Danielson ◽  
Dionisios G. Vlachos
Keyword(s):  
Direct Method ◽  
Acid Sites ◽  
Liquid Fuels ◽  
High Yield ◽  
Tandem Catalysis ◽  
Hy Zeolite ◽  
Environmental Threat ◽  
Single Use ◽  
Initial Activation ◽  
A Direct Method

Single-use plastics impose an enormous environmental threat, but their recycling, especially of polyolefins, has been proven challenging. We report a direct method to selectively convert polyolefins to branched, liquid fuels including diesel, jet, and gasoline-range hydrocarbons, with high yield up to 85% over Pt/WO3/ZrO2 and HY zeolite in hydrogen at temperatures as low as 225°C. The process proceeds via tandem catalysis with initial activation of the polymer primarily over Pt, with subsequent cracking over the acid sites of WO3/ZrO2 and HY zeolite, isomerization over WO3/ZrO2 sites, and hydrogenation of olefin intermediates over Pt. The process can be tuned to convert different common plastic wastes, including low- and high-density polyethylene, polypropylene, polystyrene, everyday polyethylene bottles and bags, and composite plastics to desirable fuels and light lubricants.

scholarly journals Present cum future of SARS-CoV-2 virus and its associated control of virus-laden air pollutants leading to potential environmental threat – A global review

2021 ◽  
Vol 9 (2) ◽  
pp. 104973
Author(s):  
Subhrajit Mukherjee ◽  
Soumendu Boral ◽  
Hammad Siddiqi ◽  
Asmita Mishra ◽  
Bhim Charan Meikap
Keyword(s):  
Air Pollutants ◽  
Environmental Threat

Environmental threat appeals in green advertising

2014 ◽  
Vol 33 (4) ◽  
pp. 741-765 ◽  
Author(s):  
Patrick Hartmann ◽  
Vanessa Apaolaza ◽  
Clare D’Souza ◽  
Jose M. Barrutia ◽  
Carmen Echebarria
Keyword(s):  
Green Advertising ◽  
Environmental Threat ◽  
Threat Appeals

Toxicity evaluation of ballast water discharged at The Onne Port complex using the microtox assay

2018 ◽  
Vol 26 (1) ◽  
pp. 77-85
Author(s):  
A.S. Ojesanmi ◽  
E.I. Ohimain ◽  
I.R. Inyang
Keyword(s):  
Ballast Water ◽  
Zinc Sulphate ◽  
Vibrio Fischeri ◽  
Research Work ◽  
Acute Toxicity Test ◽  
Toxicity Evaluation ◽  
Environmental Threat ◽  
Microtox Assay ◽  
Bioluminescence Bacteria ◽  
Ballast Water Management

Ballast water from ninety-six (96) International vessels calling the Onne Port complex were analyzed for physicochemical and acute toxicity test using the bioluminescence bacteria (Vibrio fisheri) from October 2015 to September 2016. The result of the microtox assay showed that the ballast water were generally toxic in the months under review. The Tanker vessels were generally more toxic than the RoRo/Container carriers. For the RoRo/Container carriers, the EC50 values for the 5 minutes and 15 minutes microtox assay ranged from 7.99± 2.45% in November, 2015 to 44.04±1.70% in June 2016 and 8.97±1.07% in November 2015 to 44.98±11.13% in June 2016. Similarly, for the tanker vessels, the EC50 values ranged from 5.63±1.97% in June 2016 to 28.17±1.71% in January 2016. In comparison to the reference chemical (Zinc sulphate) for the 5 minutes and 15 minutes microtox assay test, the EC50 values ranged from 1.00 ± 0.24% to 3.49±0.61% and 2.03±1.15% to 5.16±2.99% respectively. The seawater which served as controls were generally not toxic as the EC50 values was 100% from October 2015 to September 2016. The discharge of these ballast water poses a major environmental threat to the water quality and Port infrastructures at the Onne Port complex as contaminants may find their way into the food chain/food web and bioaccumulate in the tissues of indigenous biota (microorganisms, crabs, mangrove oysters and fin-fishes). This research work flags off the need for the regulators of Maritime Safety and Administration in Nigeria to monitor closely International vessels calling at major ports in Nigeria and the need to begin to domesticate some of the IMO guidelines on Ballast water management and ensure strict compliance.Key words: Ballast water, Toxicity, Vibrio fischeri, International Maritime Organization

scholarly journals Emerging Lyngbya wollei toxins: A new high resolution mass spectrometry method to elucidate a potential environmental threat

Harmful Algae ◽  
2019 ◽  
Vol 90 ◽  
pp. 101700 ◽  
Author(s):  
Meagan L. Smith ◽  
Danielle C. Westerman ◽  
Samuel P. Putnam ◽  
Susan D. Richardson ◽  
John L. Ferry
Keyword(s):  
Mass Spectrometry ◽  
High Resolution ◽  
High Resolution Mass Spectrometry ◽  
Spectrometry Method ◽  
Lyngbya Wollei ◽  
Mass Spectrometry Method ◽  
Environmental Threat ◽  
High Resolution Mass ◽  
Resolution Mass
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