Daily Archives: January 4, 2018

Google, Twitter, Facebook climate censorship is real

“Censorship can be performed only by a government.  But, the Obama administration has granted status akin to a government branch to GFTM+RW (Google, Facebook, Twitter, Microsoft, Reddit, and Wikimedia Foundation) and a few other corporations. The means for that included subjecting citizen internet access to Title II restrictions (Obamanet), so that their actions to suppress scientific and political speech result in censorship.  As mentioned in the Reply to The New York Times I experimented with distributing the climate realism message using advertising options on GFTM+R. The short report on this follows.” click here

Carbon Nanotubes for Contaminant Removal from Water

Sarkar B, Mandal S, Tsang YF, Kumar P, Kim KH, Ok YS. Designer carbon nanotubes for contaminant removal in water and wastewater: A critical review. The Science of the total environment. 2018 Jan 15;612:561-581. doi: 10.1016/j.scitotenv.2017.08.132.

The search for effective materials for environmental cleanup is a scientific and technological issue of paramount importance. Among various materials, carbon nanotubes (CNTs) possess unique physicochemical, electrical, and mechanical properties that make them suitable for potential applications as environmental adsorbents, sensors, membranes, and catalysts. Depending on the intended application and the chemical nature of the target contaminants, CNTs can be designed through specific functionalization or modification processes. Designer CNTs can remarkably enhance contaminant removal efficiency and facilitate nanomaterial recovery and regeneration. An increasing number of CNT-based materials have been used to treat diverse organic, inorganic, and biological contaminants. These success stories demonstrate their strong potential in practical applications, including wastewater purification and desalination. However, CNT-based technologies have not been broadly accepted for commercial use due to their prohibitive cost and the complex interactions of CNTs with other abiotic and biotic environmental components. This paper presents a critical review of the existing literature on the interaction of various contaminants with CNTs in water and soil environments. The preparation methods of various designer CNTs (surface functionalized and/or modified) and the functional relationships between their physicochemical characteristics and environmental uses are discussed. This review will also help to identify the research gaps that must be addressed for enhancing the commercial acceptance of CNTs in the environmental remediation industry.