Articles

131 Items

Workers shovel waste from a wheat farm into a prototype for a biomass machine

AP/Andy Wong

Journal Article - Proceedings of the National Academy of Sciences of the United States of America

Gasification of Coal and Biomass: A Net Carbon-Negative Power Source for Environment-Friendly Electricity Generation in China

    Authors:
  • Xi Lu
  • Liang Cao
  • Haikun Wang
  • Jia Xing
  • Shuxiao Wang
  • Siyi Cai
  • Bo Shen
  • Qing Yang
  • Chris P. Nielsen
  • Michael B. McElroy
| 2019

Deploying coal-bioenergy gasification systems with carbon capture and storage (CBECCS) provides a promising opportunity for China to realize its carbon mitigation and air pollution abatement goals simultaneously. The authors conducted a comprehensive assessment of CBECCS technology for China, with a focus on plant and fuel configurations (e.g., biomass ratios) and economics, as well as CO2 and greenhouse gas emissions and cobenefits for air quality.

Stan Osserman, director of the Hawaii Center for Advanced Transportation Technologies, speaks in front of a new waste to energy facility at Joint Base Pearl Harbor-Hickam, Hawaii.

AP/Audrey McAvoy

Journal Article - Journal of Cleaner Production

Stochastic Cost-benefit Analysis of Urban Waste-to-Energy Systems

Municipal solid waste generation is a rapidly increasing challenge that is leading to severe pollution and environmental degradation in many urban areas of developing countries. This study presents the Waste to Energy Recovery Assessment (WERA) framework, a new quantitative decision support model for initial evaluation and alternative comparisons of different thermochemical treatments of municipal wastes. The framework is used to study waste-to-energy (WtE) systems for Abu Dhabi, Riyadh, Tokyo, and New York. The results show that WtE systems can fulfill only 1.4–3.6% of 2014 electricity demand in the analyzed cases.

Charging electric Vehicle

Flickr/Sino-German Urbanization Partnership

Journal Article - Elsevier Inc.

Electric Vehicle Recycling in China: Economic and Environmental Benefits

    Authors:
  • Fuquan Zhao
  • Zongwei Liu
  • Han Hao
| January 2019

With the rapid growth of electric vehicles in China, their benefits should be scientifically identified to support the industry development. Although the life cycle benefits of electric vehicles have been analyzed worldwide, the recycling phase has not been fully studied yet, especially in China. Therefore, this study focuses on the economic and environmental benefits of electric vehicle recycling in China. Based on the technology adopted by leading enterprises, the gross income and reduction of energy consumption and greenhouse gas emissions are calculated to reveal the benefits.

Visitors walk across the Yalu River Broken Bridge, right, next to the Friendship Bridge connecting China and North Korea in Dandong in northeastern China's Liaoning province.

(AP Photo/Emily Wang)

Journal Article - Quarterly Journal: International Security

Conflict and Chaos on the Korean Peninsula: Can China’s Military Help Secure North Korea’s Nuclear Weapons?

    Author:
  • Oriana Skylar Mastro
| Fall 2018

China’s military could play a vital role in securing or destroying Pyongyang’s nuclear weapons if the North Korean regime collapsed.

People at Seoul Train Station watch a a local news program reporting about a North Korean missile launch. Aug. 30, 2017 (Lee Jin-man/Associated Press).

Lee Jin-man/Associated Press

Journal Article - The RUSI Journal

North Korea’s Missile Programme and Supply-Side Controls: Lessons for Countering Illicit Procurement

| Oct. 17, 2018

Despite one of the most extensive sanctions regimes in history, including an embargo on missile technologies, North Korea has taken huge steps forward in its ballistic missile programme. Daniel Salisbury explores the limitations of, and challenges of implementing, supply-side approaches to missile nonproliferation. Considering North Korea’s recent progress and efforts to evade sanctions, the article highlights the continuing need to strengthen efforts to counter illicit trade in missile-related technologies.

Blogtrepreneur/Flickr

Blogtrepreneur/Flickr

Journal Article - Nonproliferation Review

Solving the Jurisdictional Conundrum: How U.S. Enforcement Agencies Target Overseas Illicit Procurement Networks Using Civil Courts

| September 2018

Over the past two decades, the United States has increasingly turned to targeted sanctions and export restrictions, such as those imposed against Iran and North Korea, in order to curb the spread of weapons of mass destruction. One vexing problem, however, is how to contend with jurisdictional hurdles when the violations occur overseas, in countries that are unable or unwilling to assist US enforcement efforts. To solve this problem, US prosecutors are turning to strategies with significant extraterritorial implications—that is, exercising legal authority beyond national borders. One such tool is to use civil legal procedures to seize assets linked to sanctions or export-control violations in jurisdictions that lack cooperative arrangements with US enforcement agencies. While this may be an attractive strategy to bolster enforcement efforts against overseas illicit procurement, using such tools is not without consequence. This article explores the political, legal, and technical implications of enforcing extraterritorial controls against overseas non-state actors by exploring the recent uses of civil-asset forfeiture against Iranian and North Korean procurement networks.

A Chinese power plant.

Wikimedia CC/Tobixen

Journal Article - Journal of Cleaner Production

Changing Carbon Content of Chinese Coal and Implications for Emissions of CO2

| September 2018

The changing carbon content of coal consumed in China between 2002 and 2012 is quantified using information from the power sector. The carbon content decreased by 7.7% over this interval, the decrease particularly pronounced between 2007 and 2009. Inferences with respect to the changing carbon content of coal and the oxidation rate for its consumption, combined with the recent information on coal use in China, are employed to evaluate the trend in emissions of CO2. Emissions are estimated to have increased by 158% between 2002 and 2012, from 3.9 Gt y-1 to 9.2 Gt y-1.