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You are watching: Neutralizing nitric acid with sodium bicarbonate

Problem? Solution? Chime appropriate in!(one that the world"s very few "no registration" sites)-----"How to neutralize nitric acid"Q. i would favor to neutralize 40-45 gallons of 40-50% nitric acid with roughly 10 gallons of a slurry the magnesium hydroxide, which will certainly be pre-loaded inside of a steel 55-gallon rubbish drum.Assuming appropriate mixing throughout the neutralization, would you suppose to see any problems through the nitric acid attacking the stole drum?I have considered using a HDPE tank to do this before I transport it come a steel north for disposal, yet I"m pretty certain the heat of the reaction would melt the tank.If steel and HDPE room not suitable, what is? Am i going to need to neutralize smaller quantities of mountain at a time to protect against these problems?Thanks,Marty V - Urbana, Illinois, USA^
A. have you taken into consideration purifying, rather than dumping this acid? You space correct about the heat problems, it"s usually finest to dilute the acid prior to neutralizing. Climate you can use a polyethylene tank.Lyle Kirman consultant - Cleveland Heights, Ohio^A. ns get bad vibes from your question. You have the right to not abruptly add or ever rapidly include the nitric to the slurry or friend will have it top top the ceiling. It have the right to be excellent if you have actually a great mixer and include the acid slowly with a tiny twin diaphragm variable pump or a metering pump. Plan on an 8 hour work to it is in safe. An excellent care should be taken to not obtain into an mountain condition. Polypropylene (non welded) will take a greater heat 보다 Polyethylene and will was standing nitric because that a while. Thicker wall surfaces would it is in the ideal to stand the heat. Fiberglass supported would it is in great, however that is expensive. P.S., perform not be surprised if component of the sludge turns to a absent after it cools.James Watts- Navarre, Florida^A. holy Moly! Don"t get that Nitric Acid all over close to a stole container! If Nitric acid comes in call in steel it immediately releases a deadly orange gas. Also if you have the Mag Hydroxide currently in the barrel, possibilities are the Nitric will certainly splash on the political parties of the container. If you want to neutralize the Nitric acid you have to do therefore in a container that will take the heat evolution that inevitably will take place. Ns would indicate Stainless Steel. I wouldn"t use a plastic container uneven the volume was numerous times bigger than the volume of Nitric the you want to neutralize.If the were the case, you could dilute the acid under to 5-10% and slowly add the Mag Hydroxide which would minimize the warmth evolution. If friend have dissolved metal in the Nitric you will additionally need come dispose that that as well by legit means. This sounds an ext like a task for a experienced waste handling company. If you make the wrong relocate with this ingredient someone could get bad hurt.
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Daryl Spindler, CEFdecorative nickel-chrome plating - Greenbrier, Tennessee^
Your replies have evidenced my fears about the mountain coming into contact with the steel.It appears any way to attain this neutralization will be much more expensive than I had hoped. Right now the mechanism is designed v a HDPE tank and mixer and has been authorized by a PE, yet the price of disposing of the heavy metal contaminated acid dropped sufficient in the past month the I wanted to think about other options than an expensive mixer (have to run an electrical outlet too) and small additions of mountain to avoid melting the HDPE tank. It appears that my time to recover the cost of the neutralization device will be extended out a little further than I thought currently that disposal prices have actually dropped.Thanks for every one of your help everyone.Marty V - Urbana, Illinois, USA^
A. have actually you taken into consideration pre-neutralising in a stainless steel tank, allowing to cool and also then carrying to the steel vessel?John Tuohy- Ireland^January 15, 2008A. If you want to it is in safe and also cheap, you need to dilute the acid with 20 lb bags the Ice, until, its around 10% nitric (and really cold) then you can include sodium lead carbonate (washing soda) slowly or quickly and also it won"t it is in a big deal. If that starts acquiring hot just add another bag of ice.Matt J. H.biochemist - Austin, Texas^
may 21, 2010Q. as per the earlier postings, I want to dispose 2.0 - 2.5% that Hydrochloric mountain (HCl) & Nitric acid (HNO3). My arrangement is come mix100 gms of salt hydroxide come 1 litre the HCl solution = sodium chloride + water&100 gms that Potassium hydroxide to 1 liter that Nitric acid systems = salt nitrate + water. Deserve to anybody say the relationship is right?Ravi GEngineer, Employee - India^
May 21, 2010A. Hi, Ravi.The neutralization recipe are:NaOH + HCl => NaCl + HOHandKOH + HNO3 => KNO3 + HOHSo the ratios space all one molecule come one molecule. Next you calculate the molecular load of each link --NaOH: 40 HCl: 36.5 KOH: 56.1 HNO3: 63.1So you need 40 parts by weight of sodium hydroxide come neutralize 36.5 components by weight of hydrochloric acid, and also 56.1 parts of potassium hydroxide come neutralize 63.1 components of nitric acid.So you seem to it is in planning to add roughly 4 time as lot hydroxide together you should. But here"s the thing:You must never "fly blind" unless you have to! friend either confirm the ratios by doing a test-tube size titration before trying to neutralize a larger batch, or the neutralization must be an extremely gradual and under pH control or through an indicator of some type. You never ever neutralize waste based on formula. An excellent luck.Regards,Ted Mooney, P.E.Striving come live Alohabarisalcity.org - pine Beach, new Jersey^
May 21, 2010Q. say thanks to you so much Mr. Mooney because that your quick response. But we don"t have any chemistry apparatus at our office. If I blended with a rough ratio, is over there anything serious?Ravi G - Chennai, India^
May 25, 2010A. Hi, Ravi. If ns was a residence hobbyist taking care of a half liter of gentle acid, I can be tempted come neutralize the based just on calculations. But in the case, I would use nearly neutral chemicals favor sodium bicarbonate (baking soda) fairly than salt hydroxide, so the "overshoot" could not cause any type of problem, and also to minimization the exothermic reaction. You carry out realize the your proposed actions are dangerous?But you provided the indigenous "office". Businesses room expected to exercise ideal stewardship over the chemistry they use! A service which gains economic benefit over its competitors by act operations without proper stewardship provides it economically unfeasible because that their rivals to have the ability to do things right either, so the is other the whole civilization disdains :-)Call a licensed hazardous rubbish hauler! best of luck.Regards,Ted Mooney, P.E.Striving come live Alohabarisalcity.org - pine Beach, new Jersey^
April 14, 2015

Q. I desire to understand if it would be a an excellent solution come neutralize invested Nitric acid (typically 20-30% concentration) with Ammonia solution (10-30% systems -- again generally from a by-product source). By doing so, it would be feasible to obtain Ammonium Nitrate solution, which might be converted into solid by evaporation that water.I have actually a make the efforts this in lab range earlier and also found the outcomes to be encouraging. Of course the neutralisation reaction is exothermic in nature and part of this heat might be used to help evaporation as well.

T V S SARMA- Pune, India^

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Ammonium Nitrate
Hi TVS. Is some nations only licensed infrastructure are permitted to carry out this; i don"t understand the rule in India. Deserve to we assume the this will be done by a fine qualified chemist? i don"t think it"s trivial; and also I understand that when there is this lot water in it, it"s tough to acquire it out.Regards,Ted Mooney, P.E. RETAloha -- an idea precious spreadingbarisalcity.org - pine tree Beach, new Jersey^May 18, 2015Q. hi Ted, In India too, you need license to manufacture Ammonium Nitrate. Our company does have actually the patent to carry out so.In my critical communication, ns was specifically referring come neutralization reaction between Spent Nitric acid and Spent Ammonia.Do you recognize of any specialist/company which has undertaken serial production of Ammonium Nitrate using spent raw material. We have a great resource for gaining low expense spent raw material forced for Ammonium Nitrate. I understand there would be a expense to eliminate water too at the finish of the reaction.So i would need the specialist/company to aid me in the process as well.

TVS SARMA- Pune, Maharashtra, India^May 2015Hi again TVS. Anyone is welcome come post any type of helpful technical, non-commercial, replies because that you; plus, we"ll view if any type of of our sustaining advertisers contact you privately around this. Otherwise this forum can"t put buyers and also sellers together. Because that one thing we discard end 1000 spams and scams every day; us can"t also look at also a fraction of them, and we can"t encourage still an ext by giving civilization the impression that this forum offers complimentary matchmaking services -- apologies however it doesn"t. Camaraderie yes; technical help yes; potential advertising benefit, advertisers just -- sorry.Regards,Ted Mooney, P.E. RETAloha -- an idea precious spreadingbarisalcity.org - pine Beach, brand-new Jersey^

Reduce sodium hydroxide intake for neutralisation of invested acid

November 27, 2016

Q. My firm has a pickling plant where both carbon steel and stainless steel coils room pickled. There are assorted baths the HCl, HNO3, HF+HCl, HF+HNO3, to wash etc. These acids space drained to ETP ~ they with a concentration level and iron content. This acids are neutralised utilizing sodium hydroxide in a ETP tank through air blower because that aeration (no stirrer present). Climate it is pass passed on to clarifier ~ 6 hrs and also attaining a pH of 7-8.Then that is passed to filter press. Now I desire to reduce the usage of sodium hydroxide in the neutralisation of acids. What room the parameters I must analyse and changes that might be applied in the present system? likewise please administer a perform of books and also research records that I can refer to deal with this problem.Thanks and also Regards,

Zain Ansari- Mumbai,Maharashtra,India^
November 2016A. hello Zain. I appreciate your ambition, but to learn enough to have the ability to properly resolve this whole case will be the work of years. Girlfriend surely waste sufficient to economically justify retaining a consultant to job-related with girlfriend on recycling the waste, employing mountain extender chemistry in the pickling baths for this reason you remove the iron instead of dumping the bath, take into consideration the usage of alternate neutralizing agents, improve the mixing for neutralization, suggest additions for her library, etc. Waste palliation is no much longer something that your worry around after her production demands are met, however has become such one intrinsic part of every process step that it"s rather difficult to offer "general" advice; someone has to look at precisely how you usage each of those acids, rather of focusing on just how to treat them after you have actually (perhaps needlessly) decided to dump them. Ours readers can probably answer specific highly in-depth questions because that you though. An excellent luck.Regards,Ted Mooney, P.E. RETAloha -- an idea worth spreadingbarisalcity.org - pine tree Beach, new Jersey^
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November 28, 2016

A. pH 7-8 does no sound high enough to get reliable removal that the metals. 9.5 come 10 would be better.You might try lime rather of corrosive soda. It"s too many cheaper.

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Dave WichernConsultant - The Bronx, brand-new York^November 28, 2016

A. The best method to mitigate your neutralization expenses is come purify fairly than dump the contaminated acid. Both mountain Dialysis and Acid Retardation modern technology have been used for this successfully. Caustic intake may be reduced by 80-90% and also sometimes this is a larger expense savings 보다 the palliation in mountain purchases.Lyle Kirman

Lyle KirmanConsultant - Cleveland Heights^June 11, 2018

Q. Hello,I got 68% Nitric acid in a glass bottle of 1L (0,26 gall.). What would certainly be an easiest way to remove it (too dangerous stuff because that me), should I usage Na2CO3 and water, and what would be the procedure?Thank you an extremely much.Mirko

Momcilo Vukotic- Belgrade, Serbia^
June 2018A. hi cousin Momcilo. Ns am not familiar with neighborhood or national legislations applicable come Belgrade which might impact your choices, but if you can gain this to a institution or university or activities which can use it, the would certainly be the best resolution. If it"s as well dangerous because that you to have around, it might be as well dangerous because that you personally to neutralize. But you could half fill a 5-gallon plastic bucket through ice and also then, attract goggles and also gloves as a minimum, slowly pour the nitric mountain onto it. After allowing it to melt and mix, you"ll have around a 10% solution, and also you could really slowly include NaHCO3 to the icy water, mixing with a plastic paddle of some sort, till there is no more fizzing. Na2CO3 (sodium carbonate, washing soda) could be okay, yet I think NaHCO3 (sodium bicarbonate, baking soda) is a much safer bet.Be mindful to heed the vault advice of not letting the contact any type of iron or stole until fully neutralized with the NaHCO3Regards,Ted Mooney, P.E. RETAloha -- one idea precious spreadingbarisalcity.org - pine Beach, brand-new Jersey^June 14, 2018


TedThank you an extremely much. Ns contacted chemical faculty and also probably they will certainly take treatment of that :)

Momcilo Vukotic - Belgrade,Serbia^
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