75 per cent of world fish stocks are fully-exploited, over-exploited or depleted.
Consumers and farmers are turning to farmed fish as a source of food, with fish farms aiming to produce nearly two thirds of the global fish supply by 2030.
However, 81 per cent of the fish caught in the wild are currently used to feed farmed fish, making fish farming just as unsustainable.
Eating fish offers huge health benefits; they provide neurodevelopment benefits to women of child rearing age and have been shown to reduce the risk of mortality from coronary heart disease. We need to find a way of farming fish sustainably to continue receiving these health benefits.
Chemical engineers are investigating various avenues to make the aquaculture industry more sustainable and reduce the use of wild fish in farmed fish feed.
Sometimes, you find yourself in situations you have never planned or anticipated. That happened to me in 2010 as my wife and I were just flying out of Houston on 21st April 2010.
We heard a brief news story that an oil rig had caught fire in the Gulf of Mexico. This was Deepwater Horizon, the Macondo well, which eventually became the largest blowout and offshore oil spill in history – little did I know that this incident was going to fill my life for the next 85 days and beyond.
I wonder what Henry Bessemer would think of steel-making today? Since he developed the first inexpensive process for the mass production of steel in the 1850s, the world has progressed to produce over 1,606 million tonnes in 2013.
The great thing about steel is that it is 100 per cent recyclable – to the same quality, time and time again. There’s also some important energy and raw material savings. Figures from the World Steel Association show that more than 1,400 kg of iron ore, 740 kg of coal, and 120 kg of limestone are saved for every tonne of steel scrap made into new steel.
Space travel may not be the natural territory of chemical engineers, but earlier this month NASA launched a satellite which will be of great interest to many in the energy sector and those interested in climate change.
On 2 July 2014, NASA launched the Orbiting Carbon Observatory 2 (OCO-2) satellite from Vandenberg Air Force Base in California. Its mission is to study the sources and sinks of carbon dioxide globally and provide scientists with a better idea of how carbon is contributing to climate change.
Walk up to any typical man or woman in the street and ask them where their energy comes from to power their homes, cook their food, keep the cold out and fuel their cars and you’ll probably get a very long list of answers.
If you posed the question, what power source has more energy in it than all the world’s oil, coal and gas put together, only a few are likely to get the right answer.
In fact the answer is gas hydrates – the lesser known hydrocarbon. Otherwise known as fire ice and more loosely termed methane hydrate, the gas presents as ice crystals with natural methane gas (and other gases) locked inside.
Some professions have an ability to provide a unique insight into life that can transform a career into a lifelong vocation, not just a job that pays the bills every month. I’d certainly rank the engineering professions into this category.
The transformation often takes place at university, where engineering undergraduates start to become exposed to the power and potential of their chosen profession through initiatives like Global Brigades.
As a general rule, if scientists collectively issue a warning, we should take notice. If their warnings are based on a review of 800 scientific studies over two decades, you know something is seriously wrong. In this case, the warning’s about the plight of the humble bee.
The bee is nature’s pollinator but has been ravaged by pesticides, which are thought to damage their navigation, learning, food collection, lifespan, resistance to disease and fertility.
The main finger of blame is being pointed at an insecticide called neonicotinoid. It’s a systemic insecticide, meaning it can be absorbed into every cell in a plant, making all parts poisonous to pests. Concerns are also growing that neonicotinoids are affecting a much wider group of animals including birds, lizards, earthworms and coastal shellfish.
Healthcare policy ebbs and flows on a regular basis, especially in countries where the state provides tax-payer funded services like here in the UK.
However, although medicines, equipment, communication and facilities have all generally improved over time, the basic management of healthcare services and the business models for delivering them often seem in a state of constant flux.
A good example is where healthcare is best provided – in homes, communities or large centralised hospitals. Generally, I think it is a combination of all of these, but there has been a trend over the past few decades to more community- and home-based services, especially for the elderly.
It helps to have thick skin if you’re involved in the energy sector. Although demonised may be too strong a word, large chunks of the energy sector does seem to be dogged by negativity, fear and distrust.
Shale gas extraction by hydraulic fracturing or ‘fracking’ invokes worries about earth tremors and contaminated water supplies. Nuclear energy attracts concerns over cost and safety. Renewable energy infrastructure like tall wind turbines are on the receiving end of vociferous community lobby groups. Energy production is inextricably linked to climate change. All these issues are regular frequenters in the media’s column inches.
A few weeks ago I blogged about chemical engineers and their role in the production of antibiotics to save lives during the D-Day landings in 1944. Antibiotics are now part of a standard issue battlefield medical first aid kit to help save lives during what is described as a ‘platinum 10 minutes’.
Sadly, there are still around 40 conflicts in the world today. And as we’ve seen in the Middle East and Syria, chemical weapons are still being produced and used in some of those conflicts.
Accountability, openness and transparency. Three important words in the governance of any charitable and membership organisation like IChemE.
IChemE also has a wealth of knowledge and history acquired since we were established in 1922, and an active membership eager to share their experiences and expertise to advance the profession.
As your President, I also want to be accountable and share my knowledge where I can. So, throughout my presidency, there is an open invitation to send in your reasonable questions and thoughts on issues relating to our technical policy – Chemical Engineering Matters. Every now and again, we’ll publish the answers starting with today.
If you’re in the middle of your chemical engineering course, you may still be thinking about what to do when you graduate. Thankfully, there’s lots of choice, but how about taking on some of the world’s biggest consumer brands and using your chemical engineering skills to make…well…frozen lollies or popsicles? Continue reading Creative juices…with alcohol and frozen (Day 40)
What do these purification processes have in common: distillation, extraction, chromatography, adsorption, and crystallization?
All can be energy or materials intensive. In other words – expensive.
Some professionals in the purification business will often quote phrases like: “It is generally accepted that separation processes account for between 40-70 per cent of both the capital and operating costs in industry.”
The Tour de France sets off tomorrow for its 101st edition and over the duration of 23 days will see 198 riders from 22 teams attempt to complete 21 stages and cover a total distance of 3,664 kilometres or 2,276 miles.
If you’re a member of the Team Sky nine-man team you’ll probably be sitting on a carbon fibre bike worth £12,000 (USD $20,000). Also, most of the field will be using a Kevlar-based helmet ranging from £120 (USD $200) and upwards.
Smoking, passive-smoking and tobacco-related products like ‘chewing tobacco’ still kill around six million people a year. Despite all the education, controls and stigmatisation of smokers over many decades, the casualty rate is expected to rise even further to eight million by 2030.
But humanity is likely to face an even bigger killer in the future – obesity.
Worldwide obesity has doubled since 1980. Current estimates suggest 3.4 million adults die every year as a result of being overweight.
Energy poverty can mean different things in different parts of the world. In Europe, the debate is most often about the spiraling cost of energy. For some it means cutting-back on their heating and living in colder homes.
But for the one in four people around the world who don’t even have access to an energy grid, the issues are even more acute. It’s a problem that one charity – Village Infrastructure – is determined to help solve.
Village Infrastructure’s (VI) mission is to make energy affordable for the 1.3 billion people who live without electricity. Their innovative approach has already been recognised by the G20, who have provided grant funding.
How inventive are chemical engineers and how could you measure their inventiveness? It’s a bit of a rhetorical question and one that probably doesn’t need an answer, but it did cross my mind the other day when I received an email from IChemE promoting a Webinar about microalga Dunaliella by the University of Greenwich in the UK.
The University are leading a €10m international project, called the ‘D-Factory,’ to build a biorefinery to develop the microalga Dunaliella as a sustainable raw material and turn every part of the alga into something useful.
In fact, they are looking at potential products including food, pharmaceuticals, plastic and fuel. This is unlikely to be a surprise to anyone who is part of the chemical engineering ‘family’, but probably something relatively unknown in the wider world.