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Wastewater treatment is an energy intensive process that removes
contaminants and protects the environment. While some wastewater
treatment plants (WWTPs) recover a small portion of their energy
demand through sludge handling processes, most of the useful energy
available from wastewater remains unrecovered. Efforts are underway
to harness energy from wastewater by developing microbial fuel
cells (MiFCs) that generate electricity. Key challenges to the
development of microbial fuel cells include inefficiencies inherent
in recovering energy from microbial metabolism (particularly carbon
metabolism) and ineffective electron transfer processes between the
bacteria and the anode. We explored the prospects for constructing
microaerobic nitrifying MiFCs which could exhibit key advantages
over carbon-based metabolism in particular applications (e.g.,
potential use in ammonia-rich recycle streams). In addition, we
evaluated nanostructure-enhanced anodes which have the potential to
facilitate more efficient electron transfer for MiFCs because
carbon nanostructures, such as nanofibers, possess outstanding
conducting properties and increase the available surface area for
cellular attachment. In the initial phase of this project, we
investigated the performance of a novel nitrifying MiFC that
contains a nanostructure-enhanced anode and that demonstrated power
generation during preliminary batch testing. Subsequent batch runs
were performed with pure cultures of Nitrosomonas europaea which
demonstrated very low power generation. After validating our fuel
cell hardware using abiotic experiments, we proceeded to test the
MiFC using a mixed culture from a local wastewater treatment plant,
which was enriched for nitrifying bacteria. Again, the power
generation was very low though noticeably higher on the
nanostructured anodes. After establishing and monitoring the growth
of another enriched nitrifying culture, we repeated the experiment
a third time, again observing very low power generation. In the
absence of appreciable and repeatable power production from pure
and mixed nitrifying cultures, we focused on the second major
objective of the work which was the fabrication and
characterization of carbon nanostructured anodes. The second
research objective evaluated whether or not addition of carbon
nanostructures to stainless steel anodes in anaerobic microbial
fuel cells enhanced electricity generation. The results from the
studies focused on this element were very promising and
demonstrated that CNS-coated anodes produced up to two orders of
magnitude more power in anaerobic microbial fuel cells than in
MiFCs with uncoated stainless steel anodes. The largest power
density achieved in this study was 506 mW m-2, and the average
maximum power density of the CNS-enhanced MiFCs using anaerobic
sludge was 300 mW m-2. In comparison, the average maximum power
density of the MiFCs with uncoated anodes in the same experiments
was only 13.7 mW m-2, an almost 22-fold reduction. Electron
microscopy showed that microorganisms were affiliated with the
CNS-coated anodes to a much greater degree than the noncoated
anodes. Sodium azide inhibition studies showed that active
microorganisms were required to achieve enhanced power generation.
The current was reduced significantly in MiFCs receiving the
inhibitor compared to MiFCs that did not receive the inhibitor. The
nature of the microbial-nanostructure relationship that caused
enhanced current was not determined during this study but deserves
further evaluation. These results are promising and suggest that
CNS-enhanced anodes, when coupled with more efficient MiFC designs
than were used in this research, may enhance the possibility that
MiFC technologies can move to commercial application.
Build your child's reading confidence at home with books at the
right level This hilarious retelling of a traditional Hans
Christian Anderson tale tells of mistaken identities as a kind,
humble princess swaps places with her grumpy, unpleasant maid, with
some very funny consequences! Who'll end up marrying the prince,
and who will end up the goose girl, and how will the magic horse
help? Topaz/Band 13 books offer longer and more demanding reads for
children to investigate and evaluate. Text type: A traditional tale
Curriculum links: English: fairy stories, myths and legends This
book has been quizzed for Accelerated Reader.
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Raspberries (Paperback)
Alison Dolan; Edited by Richard Funt; Contributions by Michael Ellis; Edited by Harvey Hall; Contributions by Eric Hanson, …
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R1,482
R1,363
Discovery Miles 13 630
Save R119 (8%)
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Ships in 9 - 15 working days
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Raspberry production and consumption is increasing steadily
worldwide, and the potential health benefits of the fruit are
becoming more widely known. Providing an international overview of
the modern raspberry industry, this book covers North America,
Europe, Asia and the Middle East. It discusses all aspects of
raspberry growing, including plant growth and development, cultivar
description and selection, site selection and preparation
(including soil and drainage), climate, pest control, irrigation,
shipping, economics, harvesting and the marketing of the final
product. Much of this publication covers research based
information, including hundreds of references and nearly eighty
full colour plates. Taking a global perspective, this book provides
a comprehensive yet concise reference for all horticulture
students, raspberry growers, producers and fruit industry personnel
looking for the latest information in raspberry production.
When a professional states,"Your child has Autism Spectrum Disorder
(ASD)", it is enough to make your whole world fall apart. What does
it mean to be on the autism spectrum? How will this affect your
child's life, your life, the life of your family, and others you
interact with? What sorts of medications, therapies, and
alternative methods are used to help manage the disorder? What are
the financial and legal ramifications? How will this affect
schooling, your spiritual growth, and everyday life? These are just
a few of the questions that will rapidly cross your mind. Caring
for Autism: Practical Advice from a Parent and Physician delves
into all these questions and more. As the father of a daughter with
ASD and as a trained psychiatrist who specializes in ASD, Dr.
Michael A. Ellis provides a holistic view of what comes after
diagnosis. In user-friendly tones, he answers the most commonly
asked questions about what it's actually like to live with ASD,
what medications and therapies are available, and the global impact
it has on the child's environment. With the help of his wife to
provide a mother's perspective, Dr. Ellis shares personal stories
of their 10-year journey in order to provide insight and support
for anyone - patient, parent, caregiver - traversing the
difficulties of autism.
Each part of the guitar chord title is an instruction. Learn what
these instructions mean and use the two main barre chord shapes
provided as the starting point, and you can make literally
thousands of chords GUARANTEED! CHORDMASTER Chord Theory for Guitar
takes you step-by step through learning the secrets to
understanding chord titles, what they mean, and shows examples of
how to make each chord two ways. Then you can apply this knowledge
to make them even more ways.
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Proper Placement
Michael Ellis
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R254
Discovery Miles 2 540
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Ships in 10 - 15 working days
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The Baltic Cauldron commemorates several centuries of Anglo-Swedish
relations, which, after events in Eastern Europe in 2022, have
acquired a new resonance as a record of the struggle for survival
and independence of nations bordering the Baltic. This is a history
of navies in the Baltic Sea and its approaches, from the Skaggerak
to the Gulfs of Bothnia and Finland. This book portrays the
relationship between the Swedish and British Navies over the
centuries. In the 1700s Britain was a global naval power and
developed doctrine, ships and culture which were copied by others,
but the relationship with Sweden became special. While Britain and
its navy depended upon Baltic Sea trade for timber, tar, iron and
grain, the foundation was laid for the Swedish Navy, its
self-image, tactics, materials and traditions. Among the subjects
addressed are: the origins of the Swedish navy; the first English
fleet to visit the Baltic; Charles XII’s amphibious campaigns;
the English influence on Swedish shipbuilding; the quixotic Admiral
Sir Sidney Smith; Admirals Lord Nelson and James Saumarez at war
and peace; and, in the 20th century, the hunt for the Bismarck,
Churchill’s planned attack on arctic Luleå in 1940, and
blockade-runners in the Second World War. This ground-breaking
study is filled with new insights, and contains much previously
unpublished information, some based on Swedish sources which are
not often quoted in the English-speaking world. The book is brought
up to date with an account of the capture by Iranian forces of
Stena Impero. Lessons in sea power are drawn throughout the book.
The Baltic Cauldron is a fitting and worthy tribute to both the
Royal Navy and to the Royal Swedish Navy at its quincentenary.
A drug courier crashes his plane in a frozen lake in Yosemite's
high country. Winston, a Yosemite "valley rat" on the run from
killers in his home town, discovers the plane during a winter hike.
He off loads the cargo and begins a new life as a drug dealer.
After he and his girlfriend are murdered during a drug deal gone
south, their two unrelated children, Josh and Kathy, are raised by
their respective grandparents. When Josh asks his Uncle Mark for
help in finding his "sister," the outcome is anything but
predictable.
This book defines what it means to be globally literate. It is the
ultimate guide on Outsourcing and draws on the trends in education
and economy that have shifted America from being a technological
and innovative super power to the critical state it is in now. This
book is a must read for every American, needing to be
technologically savvy, or thinking of 'farming out' some of their
operations to either cope or grow in the 21st century. This book
presents the challenges with confidence and style. "An American
style," says Ahi of the book that notes how the world is
transforming and how those changes are affecting everyone, most
especially Americans. Having been educated here, founding
businesses, and teaching and raising a family, she has empowering
words and solutions for what must be done to keep America the land
of opportunity and prosperity.
We are old and we are young. We are near and we are far. We are
connected by family and by friendships. But our true connection
comes from a heart and love for our Lord and Savior, Jesus Christ.
It is our hope and prayer that all who read this book of devotions
would come to know and to love the Savior as we do. We pray that
you will find hope, joy, wisdom, peace, and most of all, love, by
the words that we have penned. May God's richest blessings fall
freshly upon you all the days of your life. With the Love of
Christ, Michelle Ellis How great is the love the Father has
lavished on us, that we should be called children of God! And that
is what we are! I John 3:1
We are old and we are young. We are near and we are far. We are
connected by family and by friendships. But our true connection
comes from a heart and love for our Lord and Savior, Jesus Christ.
It is our hope and prayer that all who read this book of devotions
would come to know and to love the Savior as we do. We pray that
you will find hope, joy, wisdom, peace, and most of all, love, by
the words that we have penned. May God's richest blessings fall
freshly upon you all the days of your life. With the Love of
Christ, Michelle Ellis How great is the love the Father has
lavished on us, that we should be called children of God! And that
is what we are! I John 3:1
This REVOLUTIONARY, NEW method teaches you how to understand chord
titles so you can make piano chords without previous music
experience, without note reading, without months of study. Start
playing songs on piano today. Just read the chord names in
songbooks and play the songs. This is the easiest, most direct
method of chord theory in the world. All of the necessary tools are
there, while all of the information that you don't need and will
never use has been eliminated. Memorization is kept to an absolute
minimum, but by the end of this book, you will have the knowledge
needed to make over 5,000 chords on the piano, easily and
logically. This book is a "must-have" especially for keyboard
players who want to play and perform like the pro's really do.
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Loot
Nadine Gordimer
Paperback
(2)
R383
R318
Discovery Miles 3 180
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