课程信息
4.8
114 ratings
34 reviews
Cleaning up the large number of groundwater contamination sites is a significant and complex environmental challenge. The environmental industry is continuously looking for remediation methods that are both effective and cost-efficient. Over the past 10 years there have been amazing, important developments in our understanding of key attenuation processes and technologies for evaluating natural attenuation processes, and a changing institutional perspective on when and where Monitored Natural Attenuation (MNA) may be applied. Despite these advances, restoring groundwater contaminated by anthropogenic sources to allow for unrestricted use continues to be a challenge. Because of a complex mix of physical, chemical, and biological constraints associated with active in-situ cleanup technologies, there has been a long standing focus on understanding natural processes that attenuate groundwater contaminant plumes. We will build upon basic environmental science and environmental engineering principles to discover how to best implement MNA as a viable treatment for groundwater contamination plumes. Additionally we will delve into the history behind and make predictions about the new directions for this technology. Any professional working in the environmental remediation industry will benefit from this in-depth study of MNA. We will use lectures, readings, and computational exercises to enhance our understanding and implementation of MNA. At the completion of this course, students will have updated understanding and practical tools that can be applied to all possible MNA sites....
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100% 在线课程

立即开始,按照自己的计划学习。
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Advanced Level

高级

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建议:3 hours/week

完成时间大约为19 小时
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English

字幕:English
Globe

100% 在线课程

立即开始,按照自己的计划学习。
Calendar

可灵活调整截止日期

根据您的日程表重置截止日期。
Advanced Level

高级

Clock

建议:3 hours/week

完成时间大约为19 小时
Comment Dots

English

字幕:English

教学大纲 - 您将从这门课程中学到什么

1

章节
Clock
完成时间为 3 小时

Course Overview and MNA as an Evolving Technology

Welcome to the course! In the Course Overview section, you will find general information about the course as well as instructions on how to navigate the course. In the lectures for this week, we will start with history. We look at a general brief history of groundwater remediation, and then a specific history of MNA featuring a list of the key protocols from 1994 to 2015. Special topics include active remediation vs. MNA, and Neat New MNA Technologies, and how degradation, storage, and dilution are all part of the MNA story....
Reading
9 个视频(共 54 分钟), 4 个阅读材料, 1 个测验
Video9 个视频
Course Overview1分钟
Course Navigation1分钟
Changing Paradigms for Groundwater Remediation7分钟
Active Remedation vs. MNA10分钟
History of MNA: Fuels, Solvents, Three Lines of Evidence6分钟
Key MNA Protocols10分钟
New Technologies, New Thinking about MNA7分钟
Three Key MNA Processes: 1) Degradation; 2) Storage; 3) Dilution6分钟
Reading4 个阅读材料
General Course Information5分钟
Discussion Forum Guidelines5分钟
Pre-Course Survey10分钟
Week 1 Homework Exercises (Optional)分钟
Quiz1 个练习
Week 1 Quiz分钟

2

章节
Clock
完成时间为 3 小时

Biodegradation Principles

In this series of lectures, we will learn when biodegradation can or cannot occur and what conditions are conducive to faster degradation....
Reading
7 个视频(共 65 分钟), 1 个阅读材料, 1 个测验
Video7 个视频
Thermodynamic Feasibility of Biodegradation4分钟
All About Electron Donors and Acceptors6分钟
Biodegradation Mechanisms: Chlorinated Solvents vs Hydrocarbons8分钟
Reactions at Interfaces and Sustained Treatment: Emerging Concepts13分钟
Biodegradation Kinetics: from Monod to First-Order Models8分钟
Mass Balance Type Calculations11分钟
Reading1 个阅读材料
Week 2 Homework Exercises (Optional)分钟
Quiz1 个练习
Week 2 Quiz分钟

3

章节
Clock
完成时间为 3 小时

Abiotic Degradation Principles

In this series of lectures, we will focus on the principles of abiotic degradation and discuss how these processes support monitored natural attenuation. You will be learning about the key reactions and minerals that are involved in abiotic degradation. We will also be covering what methods are used to determine if abiotic degradation is relevant at a particular site, and the rates at which these reactions may be occurring...
Reading
6 个视频(共 65 分钟), 1 个阅读材料, 1 个测验
Video6 个视频
Which Minerals Degrade which Contaminants?9分钟
Reaction Models13分钟
Methods and Challenges for Documenting Abiotic Degradation11分钟
Other Abiotic Reactions: Hydrolysis11分钟
Application: Does Abiotic Degradation Explain Attenuation Observed at Field Site?9分钟
Reading1 个阅读材料
Week 3 Homework Exercises (Optional)分钟
Quiz1 个练习
Week 3 Quiz分钟

4

章节
Clock
完成时间为 3 小时

Attenuation and Storage in Low K Zones

In these lectures, we will focus on the idea that storage of contaminants in geologic media as a potential natural attenuation mechanism. Under this scenario, certain contaminants diffuse in low permeability media such as silt, clay, and limestone and then eventually reenter the aquifer by a process called back diffusion. Like sorption, this process is not destructive, but attenuates a contaminant plume by sequestering some of the initial loading and then slowly releases it over long time scales. You will learn about diffusion vs. dispersion, see case studies in the lab and field, learn how to sample and model this process, and hear the latest research about degradation processes associated with matrix diffusion....
Reading
6 个视频(共 69 分钟), 1 个阅读材料, 1 个测验
Video6 个视频
Diffusion vs Dispersion10分钟
Matrix Diffusion in the Lab and Field9分钟
Matrix Diffusion Sampling11分钟
Groundwater Models for Matrix Diffusion10分钟
Degradation Processes Within Low-k Zones14分钟
Reading1 个阅读材料
Week 4 Homework Exercises (Optional)分钟
Quiz1 个练习
Week 4 Quiz分钟

讲师

Pedro Alvarez

George R. Brown Professor of Civil and Environmental Engineering
Department of Civil and Environmental Engineering

Charles Newell

Vice President
GSI Environmental Inc.

David Adamson

Senior Environmental Engineer
GSI Environmental Inc.

关于 Rice University

Rice University is consistently ranked among the top 20 universities in the U.S. and the top 100 in the world. Rice has highly respected schools of Architecture, Business, Continuing Studies, Engineering, Humanities, Music, Natural Sciences and Social Sciences and is home to the Baker Institute for Public Policy....

常见问题

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