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Mar
13
Sun
Memorial service for Professor Robert Cammarata
Mar 13 @ 1:00 pm – 3:00 pm

Robert Charles Cammarata II, a professor of materials science and engineering, member of the Hopkins Extreme Materials Institute, and leader in the Johns Hopkins University community for nearly three decades, died January 13 from cancer. He was 58.

A picture of Robert Cammarata

Robert Cammarata

To honor his memory and legacy, the Whiting School of Engineering and the Department of Materials Science and Engineering are hosting a memorial service from 1 to 3 p.m. on Sunday, March 13, in Mason Hall.

In addition, the Robert C. Cammarata Memorial Fund has been established to support student research and activities in the Department of Materials Science and Engineering. Please consider honoring Prof. Cammarata’s memory through a gift to the fund, thereby helping to ensure that his legacy as a researcher, teacher, mentor, and colleague continues.

Sep
8
Fri
MedHacks 2017
Sep 8 – Sep 10 all-day

What if the most creative minds channeled their focus into solving the most impactful problems of today? Imagine if we could apply the ingenuity that powers the most profound technology into the most fundamental of all human concerns: health. MedHacks is the start. Join us for our medical hackathon and design competition at the world’s pinnacle of medical care – Johns Hopkins University.

For 36 hours, these hackers and doctors will bring their ideas to fruition. At the end of the event, they will have the opportunity to present their solutions to the judges and the world.

Click here for more information.
Nov
6
Tue
2018 Charles and Mary O’Melia Lecture in Environmental Science
Nov 6 @ 3:00 pm – 4:00 pm

Re-Envisioning Wastewater Treatment for the 21st Century

Desmond LawlerDesmond Lawler, PhD
Nassir I. Al-Rashid Chair in Civil Engineering
Professor
Department of Civil, Architectural and Environmental Engineering
The University of Texas at Austin

Abstract: The philosophy of municipal wastewater treatment has changed only slowly in the past 100 years. From approximately 1920 to 1970, a wastewater discharge was considered acceptable if the dissolved oxygen level in the receiving stream did not dip below 5 mg/L downstream of the discharge. Protecting aquatic life, particularly fish, from immediate death due to low oxygen levels was the primary motivation and the goal. The passage of the Clean Water Act in 1970 reflected a broader view to include concerns about eutrophication by nutrients and ecological and human health concerns with the naming of “priority pollutants.” Nevertheless, the central concept was that discharge concentrations would be acceptable if they took advantage of the assimilative capacity of receiving waters; that is, if they limited the harm to acceptable values. Now we are embarking on a new philosophy, captured by the phrase “One Water” by the Water Environment Federation, in which we think of wastewater not as a problem for disposal but as a resource.

Why is this shift in philosophy happening? At least two major changes have occurred since the old philosophies were developed. First, a dramatically increased population has led to a substantial increase in “indirect potable reuse” of wastewater, whereby the effluent discharge from one city is a part of the drinking water source for a downstream city. In many areas of the arid Southwest, that “part” can often be nearly 100%. An extension of this trend, due to water shortages, is the drive toward direct potable reuse of wastewater. Second, not only do the chemical and pharmaceutical industries now produce tens of thousands of synthetic chemicals that were not dreamed of when the “priority pollutant” list associated with the Clean Water Act was developed, we now understand that some of these products are endocrine disruptors and others lead to microbial antibiotic resistance.

In this talk, I will try to make the case that wastewater treatment needs to be changed, perhaps radically, to reflect the new philosophy and to meet the needs of the 21st century. The thrust of the presentation will be to explore some possibilities for these radical changes and try to back them up with preliminary engineering calculations.

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