set pH flash

This function calculates the equilibrium solution at a specified pH by varying inflows of acid and/or base titrant(s).

set pH

POST https://api.olisystems.com/engine/flash/{dbs_file_id}/setph

fix the pH of the aqueous phase by varying acid/base amount

Headers

Name	Type	Description
Authorization	string	Bearer {access_token}
Content-Type	string	application/json

200 Please look at "API call blueprint" page on how to obtain results

{
	"code": 200,
	"data": {
		"file_id": "dee854a6-59db-487d-ad08-a20dee691133",
		"jobId": "f6b3375e-cd0f-4ace-a5ee-71e047b76754",
		"resultsLink": "https://devapi.olisystems.com/result/flash/f6b3375e-cd0f-4ace-a5ee-71e047b76754?context=engine",
		"status": "IN PROGRESS"
	},
	"message": "Process execution started Successfully",
	"status": "SUCCESS"
}

Request payload

{
    "params": {
        "temperature": {
            "value": 30.0,
            "unit": "°C"
        },
        "pressure": {
            "value": 1.5,
            "unit": "atm"
        },
        "targetPH": {
            "value": 8.0,
            "unit": ""
        },
        "pHAcidTitrant": "HCL",
        "pHBaseTitrant": "NAOH",
        "inflows": {
            "unit": "mol",
            "values": {
                "H2O": 50.0,
                "CO2": 10.0,
                "NACL": 20.0,
                "BENZENE": 10.0,
                "HCL": 0.0,
                "NAOH": 0.0
            }
        }
    }
}

params	type	description
temperature	valueObject	specified or initial guess temperature with unit
pressure	valueObject	specified or initial guess pressure with unit
targetPH	value	specified target pH of the solution
pHAcidTitrant	string	inflow species name for pH acid titrant
pHBaseTitrant	string	inflow species name for pH base titrant

One or both of params.pHAcidTitrant and params.pHBaseTitrant need to be specified. If only one titrant is to be specified, it is the same to specify it as params.pHAcidTitrant or params.pHBaseTitrant regardless of the chemical nature of the solvent.

in addition to the inputs shown above some optional properties may also be specified. They can be viewed here

Response (status = PROCESSED)

{
    "code": 200,
    "data": {
        "result": {
            "addedTitrants": [
                {
                    "name": "NAOH",
                    "titrantType": "Base",
                    "unit": "mol",
                    "value": 9.998955177015539
                }
            ],
            ...<snip>...
        }
    }, 
    "message": "Results returned successfully", 
    "status": "PROCESSED"
}

The output of this calculation is the stream output which is common result output for all OLI's flash calculations or an error. In addition to this output the result also contains the amounts of added titrants and can be conveniently retrieved from the data.result.addedTitrants array

data.result.addedTitrants [ { } ]	type	description
titrantType	string	titrant type, i.e. "Acid" or "Base". This field will be missing if only one titrant is specified.
name	string	inflow name of the titrant
value	number	added titrant amount
unit	string	unit of added titrant amount

Survey Calculation

Survey calculation is supported for the variables below. Please refer to Survey calculation for explained input schema.

supported params.surveyInputs[{}].field

"/params/temperature/value"

"/params/pressure/value"

"/params/targetPH/value"