Heavy Metals in Liquid Waste

Liquid waste loaded with heavy metals is more dangerous since water is part of any living or non-living entity and thus constitutes a matrix that can carry these pollutants everywhere. Therefore, it is clear that the industry is responsible for almost all heavy metal releases to water, hence the need to minimize the metal concentration of these waste waters. Such an objective has become possible thanks to techniques of elimination and recovery of metals in water as well as.

In order to overcome the main limitations of the methods currently available in remediation strategies, research has for some years now focused on the use of plants. It has long been known that the presence of a vegetative cover induces or stimulates the biodegradation of a large variety of organic contaminants. On the other hand, some plants are able to grow normally on sites heavily contaminated by various metals, are able to store metals in their aerial and root parts.

These natural properties of plants are exploited in the field of phytoremediation. It is a set of techniques to clean soil, to purify wastewater using plants. Many phytoremediation studies aim to increase the uptake of metals (Cu, Zn, Cr, Pb) by plants to clean up soil and purify industrial and domestic wastewater.

The aim of this study is firstly to eliminate zinc by two plants (Typha Latifolia and Phragmite Australis). This is the treatment via planted filters.

The water at the outlet of this or these filters is depolluted and can be released into the natural environment. In the second place, a comparative assessment of the tolerance and accumulation of zinc by these two plants was made. The choice of this metal was guided by the importance of pollution by this type of metal.

In the first part, we will recall some basic concepts relating to the characteristics of heavy metals, as well as plants adapted to phytoremediation systems.

The second part was conducted to study various aspects of the responses of these plants to zinc and to determine if they have the potential to be included in this phytoremediation process, by studying different parameters ( types of plants, residence time, plant density and accumulation rate).

Source: reference article

Renovating, An Antidote To The Mid Life Meltdown

Many of us will live to 90, so the idea of slowing down at 40, 50 or even 60 is ridiculous, we’ve barely got warmed up. What are your plans for the second half of your life?

Are you over the halfway mark in life terms and looking at a life in front of you with fewer options?  

I find it frustrating when I hear people in their late forties, fifties and sixties talking about getting older as if it is a disability and all there is left is a slippery slide into old age complete with fluffy slippers and early nights.

It is a crying waste of human spirit.

For most of us the early part of our working life is consumed with bringing up a family, paying for a house, building wealth and most importantly learning.  By the time middle age has come along we have built a stockpile of worldly experience and knowledge.

Right at the point when we are in the perfect position to live a life of wonder and abundance, confidence seems to take a nosedive and expectations that we should grow old gracefully take over. 

The fact is that many of us will live to 90, so the idea of slowing down at 40, 50 or even 60 is ridiculous, we’ve barely got warmed up.

I was blessed with having an inspiring role model in my mother who was widowed at forty five and rather than sink into the depths of self pity, picked herself up and built the family dairy farm into one of the biggest, most entrepreneurial businesses in her district. 

So when I found myself at a turning point in my life at 50 looking down a road that seemed to be narrowing, I knew exactly what to do. I won’t deny I had the negative thoughts, feelings of inadequacy, even excusing myself for not living life to the full but thankfully fate dealt me a huge blow that recalibrated my priorities in an instant. (That’s a story for another day) I took my passion for renovating and transformed it into the vehicle that would provide the time, money and energy to live a life I love.

Of course it wasn’t easy, but I can tell you it beats the hell out of knitting booties and watching daytime television!!

So if you are at that stage of life and this article speaks to you, I urge you it is never too late, don’t settle for mediocrity but reach for the stars…find your passion and build a new life from  it.

What dreams do you have for the second half of your life? Tell me about them in the comments below!