BPA and Use of PVC in Aquaponic Systems - Aquaponic Gardening2024-03-29T00:35:34Zhttps://aquaponicgardening.ning.com/forum/topics/bpa-and-use-of-pvc-in-aquaponic-systems?x=1&id=4778851%3ATopic%3A539664&feed=yes&xn_auth=noBoth types are manufactured..…tag:aquaponicgardening.ning.com,2014-09-05:4778851:Comment:5775232014-09-05T19:23:34.552ZVlad Jovanovichttps://aquaponicgardening.ning.com/profile/VladJovanovic
Both types are manufactured...PP as well as PE...
Both types are manufactured...PP as well as PE... Hmm, my brief google search s…tag:aquaponicgardening.ning.com,2014-09-05:4778851:Comment:5774322014-09-05T19:07:21.081ZAlex Veidelhttps://aquaponicgardening.ning.com/profile/AlexVeidel
<p>Hmm, my brief google search says it's poly-ethylene.....</p>
<p>Hmm, my brief google search says it's poly-ethylene.....</p> Dumbass question, is the blac…tag:aquaponicgardening.ning.com,2014-09-05:4778851:Comment:5776022014-09-05T07:10:25.452ZMr. Pythonhttps://aquaponicgardening.ning.com/profile/MrPython
<p>Dumbass question, is the black irrigation pipe Polypropylene?</p>
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<p>Dumbass question, is the black irrigation pipe Polypropylene?</p>
<p></p> Good one Alex...you can alway…tag:aquaponicgardening.ning.com,2014-07-30:4778851:Comment:5730962014-07-30T22:42:25.294ZVlad Jovanovichttps://aquaponicgardening.ning.com/profile/VladJovanovic
Good one Alex...you can always use PP tubing (polypropylene)...
Good one Alex...you can always use PP tubing (polypropylene)... Hey Alex, you had me reaching…tag:aquaponicgardening.ning.com,2014-07-30:4778851:Comment:5729892014-07-30T17:25:23.359ZJim Fiskhttps://aquaponicgardening.ning.com/profile/JimFisk
<p>Hey Alex, you had me reaching for the "Like" button but alas I couldn't find one<a style="cursor: pointer;"><img src="http://www.bkserv.net/images/Frown.gif"/></a></p>
<p>Hey Alex, you had me reaching for the "Like" button but alas I couldn't find one<a style="cursor: pointer;"><img src="http://www.bkserv.net/images/Frown.gif"/></a></p> Vlad, what are some of the ot…tag:aquaponicgardening.ning.com,2014-07-30:4778851:Comment:5729882014-07-30T16:17:13.747ZAlex Veidelhttps://aquaponicgardening.ning.com/profile/AlexVeidel
<p>Vlad, what are some of the other options for flexible vinyl tubing? I recently realized that I have a tiny piece (1 ft. long) in my system :P</p>
<p>The extra plasticizers in my diet have increased my intelligence by making my brain more flexible, so it's been really easy to wrap my mind around things lately, but it keeps wanting to flow out my left ear.....<br></br> <br></br> <cite>Vlad Jovanovic said:…</cite></p>
<p>Vlad, what are some of the other options for flexible vinyl tubing? I recently realized that I have a tiny piece (1 ft. long) in my system :P</p>
<p>The extra plasticizers in my diet have increased my intelligence by making my brain more flexible, so it's been really easy to wrap my mind around things lately, but it keeps wanting to flow out my left ear.....<br/> <br/> <cite>Vlad Jovanovic said:</cite></p>
<blockquote cite="http://community.theaquaponicsource.com/forum/topics/bpa-and-use-of-pvc-in-aquaponic-systems?commentId=4778851%3AComment%3A540186#4778851Comment540186"><div><div class="xg_user_generated"><p>I doubt you'll find any such info as it relates to AP specifically...But you can avoid BPA (and other potential phthalate issues) by using only rigid u-PVC. Remember, BPA and other phthalates (plasicizers) are used to make PVC soft and pliable. Unmodified, rigid PVC contains no such plasticizers. </p>
<p>As far as soft, pliable vinyl goes, no covalent bond exists between the vinyl and its plasticizer...so chemically, the bond is a weak one...which results in leaching over time. So, it probably would not be advisable to use in any recirculating, soil-less food production system. If you need a pliable hose there are other options out there besides vinyl.</p>
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</blockquote> Makes my food more flexible t…tag:aquaponicgardening.ning.com,2014-01-14:4778851:Comment:5414762014-01-14T05:59:40.471ZAveranhttps://aquaponicgardening.ning.com/profile/AveranGale
Makes my food more flexible too. ;)
Makes my food more flexible too. ;) Hey Nate...I don't know if PP…tag:aquaponicgardening.ning.com,2014-01-13:4778851:Comment:5412902014-01-13T19:57:52.521ZVlad Jovanovichttps://aquaponicgardening.ning.com/profile/VladJovanovic
<p>Hey Nate...I don't know if PP is 'one of the most toxic plastics to produce' or not, since none of them (plastics) are exactly 'fun' for the environment...but even in the case of PP production, it seems like the largest concerns once again regard additives (in the case of PP mostly antioxidents like BHT and BHA) that are produced and added to the PP plastic. And even those concerns are of an academic nature for now. Basically, the antioxidants behave unpredictably in the presence of talc…</p>
<p>Hey Nate...I don't know if PP is 'one of the most toxic plastics to produce' or not, since none of them (plastics) are exactly 'fun' for the environment...but even in the case of PP production, it seems like the largest concerns once again regard additives (in the case of PP mostly antioxidents like BHT and BHA) that are produced and added to the PP plastic. And even those concerns are of an academic nature for now. Basically, the antioxidants behave unpredictably in the presence of talc (which is used in quite judiciously the manufacturing process of many plastics) beyond a certain temperature threshold. They then form new low weight molecular chemicals which some believe <em>could</em> lead to to faster migration out of the plastic (I guess what we'd call leaching).</p>
<p>So issues surrounding toxicities need to be further explored, and I don't know that they have been. There's just not much money in proving that items used commonly in the household, in medicine, in industries of all sorts, can be toxic. That type of work is usually poorly funded (if at all) and spans years or decades.</p>
<p>Once again its the <em>additives</em> in PP that suck, and not the PP plastic itself (just as in the case with pliable PVC). BHT and BHA have been shown to cause tumors, mutations and whacky effects on the endocrine systems of animals tested (and much like BPA, fall into a particularly nasty category of toxins called "hormone disrupters".</p>
<p>BUT... if its any 'consolation' BHT and BHA are commonly used as antioxidants in FOOD, cosmetics and pharmaceuticals! ...and not just PP plastics. <img src="http://www.bkserv.net/images/Grin.gif"/> </p> Great info, thanks Vlad!
Whil…tag:aquaponicgardening.ning.com,2014-01-13:4778851:Comment:5412832014-01-13T18:43:36.970ZNathan Kaufmanhttps://aquaponicgardening.ning.com/profile/NathanKaufman
<p>Great info, thanks Vlad!</p>
<p>While on the subject... Any thoughts on Polypropylene (PPL) containers for media beds or tanks? From what I've seen it's one of the most toxic plastics to produce, but once hardened it's one of the most stable in terms of UV and biological degradation. I've used PPL tubs from ikea for several small scale home projects and found them quite useful. </p>
<p>Great info, thanks Vlad!</p>
<p>While on the subject... Any thoughts on Polypropylene (PPL) containers for media beds or tanks? From what I've seen it's one of the most toxic plastics to produce, but once hardened it's one of the most stable in terms of UV and biological degradation. I've used PPL tubs from ikea for several small scale home projects and found them quite useful. </p> The only issues I can think o…tag:aquaponicgardening.ning.com,2014-01-13:4778851:Comment:5413352014-01-13T18:17:17.906ZVlad Jovanovichttps://aquaponicgardening.ning.com/profile/VladJovanovic
<p>The only issues I can think of surrounding rigid u-PVC are environmental ones which are rooted in it's manufacturing process. Again, if you need flexible hose there are many other options.</p>
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<p>@Carey...yeah, it's sure been a while :)</p>
<p>Certainly HDPE is a superior material...but man is it pricey! Guess there is a reason why PVC is referred to as "the poor man's plastic. If we're talking about degradation of pliable PVC (not the rigid piping)...yeah the outer surfaces exposed…</p>
<p>The only issues I can think of surrounding rigid u-PVC are environmental ones which are rooted in it's manufacturing process. Again, if you need flexible hose there are many other options.</p>
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<p>@Carey...yeah, it's sure been a while :)</p>
<p>Certainly HDPE is a superior material...but man is it pricey! Guess there is a reason why PVC is referred to as "the poor man's plastic. If we're talking about degradation of pliable PVC (not the rigid piping)...yeah the outer surfaces exposed to the Suns UV rays seem to suffer most, but studies have show (again we're talking PLIABLE PVC here) that certain minerals like calcium in the water exacerbate degradation and leaching...so it's not always just UV exposed surfaces (again this has nt been shown to be a problem with unmodified rigid PVC).</p>