Water and Wastewater.com Help Forums - Sulfric Acid

epa999hk YaBB Newbies Offline I love Water and Wastewater.com Posts: 6 Company or Organization: ASB biodiesel	Sulfric Acid - grease trap oil problem Oct 04^th, 2011, 3:58am My Biodiesel plant is planning to initiate grease trap water treatment. I would like to know the ratio by vol. of conc. H2SO4, condition and necessary to add other chemical in order to meet the standard??
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Tom Keenan - nesa God Member Offline Environmental Consultant - contact info@nesa.ie Posts: 2103 Gender: Company or Organization: nesa environmental consultants	Re: Sulfric Acid - grease trap oil problem Reply #1 - Oct 4^th, 2011, 12:11pm Hi epa999hk, Can you clarify this question, please? What information are you trying to find?
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epa999hk YaBB Newbies Offline I love Water and Wastewater.com Posts: 6 Company or Organization: ASB biodiesel	Re: Sulfric Acid - grease trap oil problem Reply #2 - Oct 4^th, 2011, 12:34pm how much H2SO4 should i add when the oil % is 10% in waste water?
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Jeff Naumann

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Re: Sulfric Acid - grease trap oil problem
Reply #3 - Oct 4^th, 2011, 12:38pm

epa999hk wrote on Oct 4^th, 2011, 12:34pm:

how much H2SO4 should i add when the oil % is 10% in waste water?

How much should you add, to do what?

If neutralization is your goal, you will need to do titration tests to see how much is required. You might also consider using another acid, as concentrated sulfuric acid is pretty dangerous stuff. Remember to always add acid to water, NOT water to acid.

Also, the amount of acid needed will probably vary somewhat, depending upon the water source.

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epa999hk YaBB Newbies Offline I love Water and Wastewater.com Posts: 6 Company or Organization: ASB biodiesel	Re: Sulfric Acid - grease trap oil problem Reply #4 - Oct 4^th, 2011, 12:47pm Thanks for your reply! Besides pH, TOC, COD, what kind of parameter is suitable for test the grease trap waste? Heating is necessary in acid cracking processing?
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epa999hk

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Re: Sulfric Acid - grease trap oil problem
Reply #5 - Oct 4^th, 2011, 12:51pm

Jeff Naumann wrote on Oct 4^th, 2011, 12:38pm:

epa999hk wrote on Oct 4^th, 2011, 12:34pm:

how much H2SO4 should i add when the oil % is 10% in waste water?

How much should you add, to do what?

If neutralization is your goal, you will need to do titration tests to see how much is required. You might also consider using another acid, as concentrated sulfuric acid is pretty dangerous stuff. Remember to always add acid to water, NOT water to acid.

Also, the amount of acid needed will probably vary somewhat, depending upon the water source.

actually, my purpose of using H2SO4 is demulsify/acid Cracking the Oil

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sobisch God Member Offline Posts: 1777 Gender: Company or Organization: L.U.M. GmbH	Re: Sulfric Acid - grease trap oil problem Reply #6 - Oct 5^th, 2011, 1:15am Dear Epa, the amount needed will depend on the original pH and composition of the emulsion. Jar-testing will be needed on the samples at which pH value there is efficient demulsification and whether this is possible by adding sulphuric acid. Kind regards T. Sobisch
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Tom Keenan - nesa

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Re: Sulfric Acid - grease trap oil problem
Reply #7 - Oct 5^th, 2011, 3:54am

Hi Epa,
I am still a bit confused as to the information that you are trying to get.
It seems to me that you may be collecting grease trap waste to recover the fats/oils/greases for eventual use in a biodiesel plant?
Is this correct?

Then it seems that you may be trying to establish a suite of tests that you should apply to the grease trap waste .... but I'm not sure what you need to know about the waste?

Can you provide any more information?

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tomkeenan@nesa.ie
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epa999hk

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Re: Sulfric Acid - grease trap oil problem
Reply #8 - Oct 5^th, 2011, 11:37am

Tom Keenan - nesa wrote on Oct 5^th, 2011, 3:54am:

Hi Epa,
I am still a bit confused as to the information that you are trying to get.
It seems to me that you may be collecting grease trap waste to recover the fats/oils/greases for eventual use in a biodiesel plant?
Is this correct?

Then it seems that you may be trying to establish a suite of tests that you should apply to the grease trap waste .... but I'm not sure what you need to know about the waste?

Can you provide any more information?

It seems to me that you may be collecting grease trap waste to recover the fats/oils/greases for eventual use in a biodiesel plant?
Is this correct? Right, and i concern about the waste water after the processing is toxic or harmful? if yes, i need to add NaOH to increase the pH?

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Re: Sulfric Acid - grease trap oil problem
Reply #9 - Oct 5^th, 2011, 12:35pm

You may have two distinct types of emulsions, water in oil and oil in water. I would contact chemical suppliers such as Tretolite or Nalco, to evaluate processing your grease trap waste. Besides chemical treatment, evaporative processes may be economical if you have a market for the condensate. Jar tests may also determine if heat and pH adjustment may provide adequate seperation for your ultimate purpose (you need to define this, e.g. % water after processing, etc.). The dewatered product may not be satisfactory for your intended use.

http://investor.shareholder.com/bhi/releasedetail.cfm?releaseid=301279

http://www.nalco.com/

grrun

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commissioning guy Senior Member Offline I love Water and Wastewater.com Posts: 292 Company or Organization: SWS	Re: Sulfric Acid - grease trap oil problem Reply #10 - Oct 5^th, 2011, 1:09pm Not sure why you have contacted this board as the production of biodiesel from FOG is a well know process with numerous companies (and individuals) who will know better than us. Google would be a good place to start!
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varodom Junior Member Offline I love Water and Wastewater.com Posts: 51 Company or Organization: PTTChem	Re: Sulfric Acid - grease trap oil problem Reply #11 - Oct 12^th, 2011, 10:32pm Dear Epa waste water from biodiesel process have a lower pH, why you need to add H2SO4 into your waste water. if you need to remove oil and grease you should be have DAF unit to solve your problem. it can help you so much. regards varodom
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georgewalter

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Re: Sulfric Acid - grease trap oil problem
Reply #12 - Feb 23^rd, 2012, 5:12am

I just dont know the exact formula for this dude. This is not my expertise but Im glad you are concerned with the use of biodiesel. Biodiesel is slowly but surely transforming into a larger factor in the fuel industry. This does not, however, mean that the market is not without its troubles.

Source for this article: Biodiesel slowly becoming more commercially viable.

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sobisch God Member Offline Posts: 1777 Gender: Company or Organization: L.U.M. GmbH	Re: Sulfric Acid - grease trap oil problem Reply #13 - Feb 23^rd, 2012, 5:23am Biodiesels pollute more than crude oil, leaked data show http://www.euractiv.com/climate-environment/biodiesels-pollute-crude-oil-leaked-...
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