Successful Deployment of an Innovative Environmental Technology: The Terra-Kleen Experience

The National Research Council's report, Innovations in Ground Water and Soil Cleanup: From Concept to Commercialization, reviewed the implementation of innovative remediation technologies and portrayed a bleak outlook for them. Conversely, Terra-Kleen has invented, patented, permitted, and profited through the use of an innovative technology in the current market. Terra-Kleen has implemented a solvent extraction technology for the removal of PCBs, PAHs, and chlorinated pesticides from soil, sediment, and debris. To date, Terra-Kleen has successfully processed over 23 million pounds of PCB-contaminated soil in Alaska, California, Florida, Ohio, and Oklahoma. The company has been profitable each year since its inception, and has averaged a revenue growth rate of 94 percent per year for the last four years. Corporate growth has been financed entirely through profits and conventional bank loans at favorable interest rates. This article reviews the factors that have led to Terra-Kleen's success, overviews the solvent extraction technology, and details specific projects that have implemented the technology.     

我国排污权交易落实的现实要求及有效性分析

从排污权基本概念出发，在分析我国进行排污权交易必要性的基础上，提出进行交易还存在的问题，并给出相应的建议。     

Sustainable remediation: Quo vadis?

Sustainable remediation is at a crossroads. In a few short years it has become a mainstream topic while simultaneously maintaining its chimeral status. Sustainable remediation is a term claimed by many yet a concept apparently understood by few. Its characterization has necessitated the development of a plethora of metrics and tools yet its essence readily emerges. U.S.‐led initiatives have been adopted around the globe. Relative sustainability appraisal is easy to carry out and potentially sufficient for most site circumstances. The need to adequately protect human health and the environment has been recognized. Now the industry needs to focus our attention on protection and restoration that itself has a reasonably maximized net benefit. © 2011 Wiley Periodicals, Inc.     

Biodegradable/Bio-plastics: Myths and Realities

Journal of Polymers and the Environment - The plastics industry is proliferating continuously and the global plastics production in 2018 has reached around 360 million tones. This has further...     

Applying machine learning approach in recycling

Journal of Material Cycles and Waste Management - Waste generation has been increasing drastically based on the world’s population and economic growth. This has significantly affected human...     

湿法脱硫装置效率不高原因分析

分析了石灰石—石膏湿法烟气脱硫系统脱硫效率不高的原因,提出了查找方法和程序。     

Scalable Manufacturing Green Core–Shell Structure Flame Retardant,with Enhanced Mechanical and Flame-Retardant Performances of Polylactic Acid

Journal of Polymers and the Environment - As a plastic that can be prepared from biomass resources, polylactic acid (PLA) has the characteristics of being degradable and renewable, and has shown...     

Mitigating greenhouse gas emissions of municipal solid waste management system: case study of Chengdu,China

Journal of Material Cycles and Waste Management - Municipal solid waste management has become a worldwide concern. Chengdu municipality has decided to adopt the “zero landfilling”...     

多水源用水网络优化模型研究

为了解决含有多类供水水源的用水网络优化设计问题,研究了过程工业用水特点,将各用水单元看成水阱,各单元的排水看成潜在水源,从而将供水问题转化为水阱和水源的匹配问题,建立用于多水源用水网络优化的配水模型,并详细阐述该模型应用步骤及其特点。     

我国“十一五”火力发电企业关停容量及节能分析与建议

从我国节能减排的政策出发,分析了“十一五”期间我国已关停的小火电机组容量、机组装机范围、企业分布等特征,以及其节能降耗与环保效果。预测了“十一五”关停小火电机组容量,并提出了相关建议。     

活性炭生物转盘法处理化工废水

使用固定剂将颗粒状活性炭固定在盘片上，制成了一种新型生物转盘盘片——活性炭生物转盘盘片。采用一级微型生物转盘法处理模拟化工废水，对比了活性炭、石英砂、聚丙烯3种生物转盘的处理效果。实验结果表明，活性炭生物转盘对COD的去除效果好于其他两种转盘。在进水COD为600mg／L、水力停留时间为6h、盘片转速为4r／min的条件下，活性炭生物转盘对COD的去除率可达71．3％。此外，活性炭生物转盘还有较强的耐有机负荷冲击能力。在废水处理过程中，活性炭仅在挂膜的前7天起吸附作用，挂膜成功后生物降解起主导作用。     

Catalytic pyrolysis of Eupatorium adenophorum by sodium salt

Journal of Material Cycles and Waste Management - Eupatorium adenophorum (EA) has been spread widely in China and its increasing number has posed potential threats and damages to the ecosystem and...     

Sustainable and clean utilization of coal gangue: activation and preparation of silicon fertilizer

Journal of Material Cycles and Waste Management - Coal gangue, a by-product produced during the coal processing, has a serious impact on the environment. Using coal gangue as a fertilizer has been...     

A novel methodology for household waste characterization during the COVID-19 pandemic: case study results

Journal of Material Cycles and Waste Management - The COVID-19 pandemic has caused a large number of the world’s cities to establish quarantines. Much has been said about the environmental...     

National and subnational outcomes of waste management policies for 1718 municipalities in Japan: development of a bottom-up waste flow model and its application to a declining population through 2030

Journal of Material Cycles and Waste Management - Japan has been promoting 3R (reduce, reuse, and recycle) policies for several decades, but the recycling rate of the whole country has leveled off,...     

Waste landfill plant and waste disposal plant efficiencies in China

Journal of Material Cycles and Waste Management - As resident awareness of environmental issues has grown, waste disposal has become an important part of urban environmental governance. Most...     

Nanoremediation and International Environmental Restoration Markets

Nanoscale zero‐valent iron (nZVI) is the most commonly used nanoremediation material. While there has been a reasonable level of application of nZVI technologies for in situ remediation in the United States, its utilization across Europe has been much more limited. There has been significant uncertainty about the balance between deployment risks and benefits for nanoparticles (NPs), which has affected the regulatory position in several countries. Some member states of the European Union (EU) take a strong precautionary view of the risks from the deployment of NPs into the subsurface, preventing the adoption of the technology. This article provides a risk–benefit assessment for nZVI based on published information and describes the steps that will be taken by a major European research project (NanoRem), as part of its work to provide a basis for better informed decision making in European environmental restoration markets. A key part of this process is dialogue between practitioners and researchers. NanoRem therefore has an active process of communication with different stakeholder networks (regulators, service providers, and site owners). NanoRem hopes to stimulate a consensus on appropriate use of nanoremediation and thereby stimulate effective technology transfer to the European remediation market. ©2015 The Authors     

An overview of municipal solid waste management in China

Municipal solid waste management (MSWM) in China warrants particular attention as China has become the largest MSW generator in the world and the total amount of MSW it produces continues to increase. In recent years, central and local governments have made great efforts to improve MSWM in China. New regulations and policies have been issued, urban infrastructure has been improved, and commercialization and international cooperation have been encouraged. Considering these developments, an overview is necessary to analyze the current state as well as new opportunities and challenges regarding MSWM in China. This paper shows that since the late 1990s, the amount of MSW collected has been largely decoupled from economic growth and incineration has become an increasingly widespread treatment method for MSW. We identify and discuss four major challenges and barriers related to China’s MSWM, and propose an integrated management framework to improve the overall eco-efficiency of MSWM.     

Buried pesticide waste hazard to Poland

The utilization of pesticides during the last 30 years in Poland has left some hundreds of thousands of tonnes of highly toxic waste, creating an alarming situation for nature and man. This pesticide waste, which has been buried under less than ideal conditions throughout the entire country, is leaching out of many of its containers and is endangering the groundwater and general environment. The extent and the impact of this contamination is unknown. As a result of a shortage of finances and general national and international indifference, a suitable method of cleaning up this waste has not yet been found.     

Methyl methacrylate (MMA) and alumina recovery from waste artificial marble powder pyrolysis

Journal of Material Cycles and Waste Management - Owing to various advantages of artificial marble compared to natural marble, its application has been rising exponentially, which has resulted in...