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Subject / Started by Replies / Views Last post
Seawater evporation

Started by Peng

1 Replies
327 Views
Last post 08/02/26 18:45
by dlparkhurst
Error: ?Rate not found for Forsterite? when using custom RATES/KINETICS in a cou

Started by FatemehSh

1 Replies
5080 Views
Last post 04/12/25 02:23
by dlparkhurst
Dicalcium silicate reaction in 1M Na2SO4 solution

Started by Bryan_Aylas

3 Replies
5381 Views
Last post 02/12/25 20:19
by dlparkhurst
Temperature dependence of solubility of gypsum and anhydrite

Started by Aksenova

2 Replies
6125 Views
Last post 10/11/25 10:24
by Aksenova
Alkalinity and saturation indices

Started by jose981

1 Replies
7380 Views
Last post 09/08/17 00:07
by dlparkhurst
Mixing and evaporation prior to infiltration

Started by Merche

1 Replies
7511 Views
Last post 16/06/24 20:00
by dlparkhurst
Large Percentage Error (up to 47%) in Saturation Index Calculation

Started by Fadeji01

1 Replies
7567 Views
Last post 18/11/24 15:20
by dlparkhurst
Solubility Curves

Started by nguyenp123

0 Replies
7575 Views
Last post 15/11/17 13:30
by nguyenp123
Heating water in concrete lined borehole - geochemical changes

Started by ross

1 Replies
7576 Views
Last post 14/06/24 15:36
by dlparkhurst
Dissolution of Montmorillonite, only occuring 1 cell at a time

Started by ravreeland

1 Replies
7609 Views
Last post 23/01/18 17:59
by dlparkhurst
Effect of density in Saturation Index

Started by DFhidro

1 Replies
7625 Views
Last post 04/12/24 21:55
by dlparkhurst
PHREEQC, Solubility graphs from a quaternary mix of salt

Started by nicksingh

1 Replies
7635 Views
Last post 07/07/17 15:28
by dlparkhurst
Sulfate salts

Started by jose981

1 Replies
7676 Views
Last post 01/11/17 14:21
by dlparkhurst
Partial Pressure of CO2 with respect to pressure

Started by serhatttt

1 Replies
7680 Views
Last post 15/11/24 14:48
by dlparkhurst
Quartz precipitate or silica gel?

Started by isaacrojas

1 Replies
7687 Views
Last post 30/06/17 03:12
by dlparkhurst
methane carbon isotopes fractionation

Started by Mr.white

0 Replies
7692 Views
Last post 22/05/24 09:17
by Mr.white
Sequential kinetic reactions

Started by peterwadeuk

1 Replies
7693 Views
Last post 04/04/17 03:48
by dlparkhurst
Setting Solution Volume for Dissolution/Precipitation Reactions

Started by ZYWTDaEO6

1 Replies
7701 Views
Last post 09/11/24 18:01
by dlparkhurst
Modification of Pitzer Ion interaction Parameters

Started by RenAmb

1 Replies
7721 Views
Last post 14/01/25 19:33
by dlparkhurst
Hydrogen solubility

Started by Seymensch

1 Replies
7748 Views
Last post 07/11/24 16:36
by dlparkhurst
Dissolution/Precipitation with time

Started by Nitin

1 Replies
7788 Views
Last post 02/09/23 15:12
by dlparkhurst
Dissolution of CO2 Gas

Started by Mgill9460

1 Replies
7808 Views
Last post 11/10/24 17:17
by dlparkhurst
Evaporation

Started by samia22

1 Replies
7849 Views
Last post 14/11/22 19:13
by dlparkhurst
Predict pore water concentrations using other geochem data?

Started by FClBrI

1 Replies
7852 Views
Last post 14/03/24 15:01
by dlparkhurst
Dissolution of amorphous silica in alkaline solutions

Started by Aksenova

10 Replies
7869 Views
Last post 07/11/25 16:04
by dlparkhurst
Add lithium dissociating and hydrolyzing species to code

Started by Topskeer

1 Replies
7871 Views
Last post 28/01/25 15:58
by dlparkhurst
Determination of precipitation amount - different database issue

Started by mstec@ichpw.pl

2 Replies
7872 Views
Last post 23/10/17 11:33
by mstec@ichpw.pl
Ba(x)Ra(1-x)SO4 Solid Solution Precipitation

Started by lswerhone

1 Replies
7873 Views
Last post 17/10/24 02:48
by dlparkhurst
Aragonite and Calcite precipitation question

Started by Khaled

1 Replies
7928 Views
Last post 17/01/24 23:07
by dlparkhurst
Negative temperature dependency of solubility of Nahcolite , pitzer.dat ?

Started by TobiasHogen

2 Replies
7928 Views
Last post 22/05/24 15:58
by TobiasHogen
monomethyl et dimethyl

Started by Scarlet

0 Replies
7930 Views
Last post 08/05/18 11:53
by Scarlet
Acid Strength's Influence on logK Value

Started by OmranS

1 Replies
7934 Views
Last post 13/06/22 23:21
by dlparkhurst
How to plot time vs concentration.

Started by lorerave

1 Replies
7935 Views
Last post 03/04/23 15:59
by dlparkhurst
Jeisonb

Started by Jeisonb

0 Replies
7981 Views
Last post 17/02/21 00:06
by Jeisonb
Complete removal of dissolved Fe as saponite

Started by leocwang

2 Replies
7992 Views
Last post 03/07/24 02:10
by leocwang
Ion pairing

Started by kurtd

1 Replies
7992 Views
Last post 21/12/17 17:36
by dlparkhurst
two kinetics for mineral dissolution

Started by Selene Eliana Patani

2 Replies
8002 Views
Last post 20/12/17 17:18
by Selene Eliana Patani
Output interpretation

Started by Kellen

1 Replies
8004 Views
Last post 29/12/17 23:52
by dlparkhurst
Comparison of simulation data and laboratory experiments

Started by Aksenova

1 Replies
8011 Views
Last post 04/09/25 21:07
by dlparkhurst
Is it possible to calculate SI of a mineral without having an element analyzed?

Started by toupis12

1 Replies
8013 Views
Last post 31/05/22 15:54
by dlparkhurst
Quatrz(a) and Qartz(am)

Started by IliasBouchkira

1 Replies
8037 Views
Last post 16/12/20 14:55
by dlparkhurst
Looking for help to solve errors "Element or phase not defined in database"

Started by Max0109

1 Replies
8041 Views
Last post 13/03/23 19:12
by dlparkhurst
Mass balance issues

Started by Flopi

1 Replies
8063 Views
Last post 05/07/17 01:10
by dlparkhurst
calcite precipitation

Started by Hailey

0 Replies
8067 Views
Last post 29/01/18 04:06
by Hailey
Strange mineral precipitation behavior?

Started by ellisone

1 Replies
8067 Views
Last post 19/12/22 16:33
by dlparkhurst
Hydrothermal dolomitization

Started by Eivind_Vagle

2 Replies
8071 Views
Last post 19/01/24 09:45
by Eivind_Vagle
Pore space

Started by Aksenova

1 Replies
8072 Views
Last post 04/06/24 22:35
by dlparkhurst
Source/sink term in Eq. 107 of Phreeqc’s manual (version 2)

Started by gia

1 Replies
8074 Views
Last post 27/10/21 07:03
by dlparkhurst
Halite Precipitation

Started by DFhidro

1 Replies
8092 Views
Last post 10/07/23 17:34
by dlparkhurst
pH goes backwards when goethite precipitates

Started by afisch80

1 Replies
8093 Views
Last post 30/05/19 16:11
by dlparkhurst
Solubility curve of tenorite

Started by tyler_n

2 Replies
8107 Views
Last post 09/11/17 21:29
by tyler_n
Saturation index

Started by Aksenova

1 Replies
8121 Views
Last post 07/05/24 14:10
by dlparkhurst
Density and EC calculations following dissolution

Started by Jacob

2 Replies
8177 Views
Last post 18/10/22 05:30
by Jacob
How to model an incremental serie of batch

Started by tneron

1 Replies
8181 Views
Last post 29/10/21 16:14
by dlparkhurst
Minerals supersaturated after defining as equilibrium

Started by peterwadeuk

2 Replies
8192 Views
Last post 27/02/17 16:04
by peterwadeuk
Is it possible to visualize the chemical prediction equilibrium equations?

Started by Juan Sebastian

2 Replies
8214 Views
Last post 15/06/24 00:39
by Juan Sebastian
Solubility kinetics PHREEQC

Started by IliasBouchkira

1 Replies
8214 Views
Last post 27/11/23 14:54
by dlparkhurst
Determine the saturation index (SI)

Started by Aksenova

1 Replies
8225 Views
Last post 19/04/24 00:03
by dlparkhurst
ERROR: Numerical method failed on all combinations of convergence parameters

Started by andyql

2 Replies
8228 Views
Last post 17/05/23 07:30
by andyql
Hydrogen Storage in Sandstone reservoir

Started by Seymensch

2 Replies
8229 Views
Last post 11/10/24 23:06
by Seymensch
Calcite dissolution during hydrogen storage

Started by MMMM

2 Replies
8241 Views
Last post 08/08/24 15:03
by MMMM
Obtaining PHREEQC results in each cell of a 3D PHAST model

Started by appups

2 Replies
8255 Views
Last post 13/12/24 16:26
by dlparkhurst
Dominant mineral

Started by ANar

1 Replies
8257 Views
Last post 31/08/16 19:53
by dlparkhurst
Geothermal Bore Scaling

Started by AntonioG

2 Replies
8270 Views
Last post 11/12/24 05:41
by AntonioG
Mean ion activity coefficients of NaCl solutions

Started by ammonge

2 Replies
8291 Views
Last post 16/07/24 16:51
by ammonge
Plotting more than one mineral solubility curve on a PHREEQC graph

Started by J.Hopwood

2 Replies
8305 Views
Last post 01/09/17 19:49
by J.Hopwood
References and Handbooks for solubility (Ks) of Mg-Si-F based minerals

Started by IliasBouchkira

0 Replies
8310 Views
Last post 23/11/20 15:55
by IliasBouchkira
ZINC LEACHING WITH LACTATE

Started by AnnaJulIQ

1 Replies
8322 Views
Last post 07/03/21 19:21
by dlparkhurst
Mean GAM question

Started by IliasBouchkira

1 Replies
8330 Views
Last post 31/01/24 14:45
by dlparkhurst
Precipitation

Started by edward

1 Replies
8333 Views
Last post 28/07/17 01:57
by dlparkhurst
kinetic rate unit measurement

Started by Selene Eliana Patani

2 Replies
8334 Views
Last post 10/01/18 08:54
by Selene Eliana Patani
Dissolution of calcite during hydrogen storage in the presence of CO2 and ions

Started by MMMM

2 Replies
8335 Views
Last post 11/01/25 19:53
by MMMM
Fractionation of Ca isotopes during calcite precipitation

Started by LukeMM

2 Replies
8337 Views
Last post 02/12/16 20:17
by LukeMM
Dissolution of phosphates in a granite

Started by RadiantRocks23

2 Replies
8337 Views
Last post 23/05/24 11:27
by RadiantRocks23
Temperature effects on Uraninite precipitation

Started by Jeonghwan Hwang

2 Replies
8341 Views
Last post 11/11/22 05:22
by Jeonghwan Hwang
How to calcuate simple saturation indices

Started by Rachael

1 Replies
8348 Views
Last post 17/07/22 14:12
by dlparkhurst
CO2 temperatur and pressure effects

Started by yuku

1 Replies
8357 Views
Last post 15/10/21 00:41
by dlparkhurst
Abnormal pH value in the dissolution of magnesia(MgO)

Started by Hennessy_1

2 Replies
8365 Views
Last post 09/03/17 13:44
by Hennessy_1
Silicon precipitation

Started by Anya

3 Replies
8384 Views
Last post 29/03/24 15:40
by dlparkhurst
The contradiction between dissolution degree and the amount of solute

Started by sama.k

1 Replies
8385 Views
Last post 11/05/20 18:41
by dlparkhurst
Dissolution of a solid solution in alkaline water

Started by JakubV

1 Replies
8386 Views
Last post 31/05/16 01:30
by dlparkhurst
Mineral Precipitation

Started by serhatttt

2 Replies
8415 Views
Last post 06/11/22 10:41
by serhatttt
How much FeCl2 can be dissolved in solution before Fe-minerals are precipitated.

Started by Phreak

1 Replies
8417 Views
Last post 22/05/18 03:57
by dlparkhurst
what is the difference between FeCO3, Siderite(d), Siderite in phreeqc database?

Started by Penny

1 Replies
8418 Views
Last post 31/03/18 16:17
by dlparkhurst
Pitzer.dat

Started by INZILLO

2 Replies
8419 Views
Last post 16/05/24 07:07
by INZILLO
Stable phases were obtained even with 0 ppm of ions concentration

Started by rkramamoorthy

3 Replies
8420 Views
Last post 08/12/24 05:22
by dlparkhurst
Aragonite-Strontianite-Calcite solid solution

Started by MichaelZ20

2 Replies
8438 Views
Last post 10/02/19 22:13
by MichaelZ20
Burkeite Scale

Started by Sinaatalebi

1 Replies
8439 Views
Last post 28/11/21 22:22
by dlparkhurst
Precipitation

Started by tsnmaster

0 Replies
8472 Views
Last post 24/11/15 14:04
by tsnmaster
Silica precipitation via CO2 acidification of a sodium silicate solution

Started by RenAmb

1 Replies
8483 Views
Last post 09/09/25 23:01
by dlparkhurst
Dissolution reaction of uranium rocks depending on the redox state

Started by inhee

3 Replies
8488 Views
Last post 08/05/24 00:13
by dlparkhurst
Reaction of Iron with bisulfide

Started by Sifat Azad Papry

1 Replies
8501 Views
Last post 02/11/23 16:55
by dlparkhurst
How to use the saved aqueous solution+solids i the subsequent simulation?

Started by Titanium

1 Replies
8519 Views
Last post 08/12/21 15:31
by dlparkhurst
Possible to add a legend to define time periods on porosity-distance plots?

Started by rworden

2 Replies
8521 Views
Last post 14/12/24 08:38
by rworden
Impact of gypsum equilibrium on pyrite oxidation

Started by emkau

2 Replies
8522 Views
Last post 22/11/22 16:55
by MichaelZ20
Element has not converged problem

Started by IliasBouchkira

1 Replies
8522 Views
Last post 07/04/21 18:55
by dlparkhurst
Plotting Delta Phase Assemblage for Dissolution

Started by DvS95

2 Replies
8523 Views
Last post 09/10/24 20:11
by DvS95
Precipitation: Fixating pH on measured pH & Acidification with HCl

Started by cdelvalleve

1 Replies
8524 Views
Last post 18/08/22 17:11
by dlparkhurst
Water-Clay Interaction

Started by rudolff16

1 Replies
8537 Views
Last post 07/04/20 15:27
by dlparkhurst
Fe(OH)3(a) or Goethite

Started by pia said

0 Replies
8539 Views
Last post 04/12/19 18:06
by pia said
Mineral dissolution sequence

Started by Jay Chou

2 Replies
8569 Views
Last post 01/12/22 03:30
by dlparkhurst
Determining Fe(III) left in solution

Started by jwcohen

1 Replies
8586 Views
Last post 16/10/19 21:56
by dlparkhurst
BaCO3 saturation index

Started by jemiddle

4 Replies
8590 Views
Last post 16/08/17 14:57
by jemiddle
Dissolution from unknown mineral phases

Started by Loreto Martínez

1 Replies
8594 Views
Last post 13/05/20 22:43
by dlparkhurst
Calcite solubility as function of pH - fails at high pH

Started by mCPBA

3 Replies
8598 Views
Last post 22/07/24 22:56
by dlparkhurst
Diagram plot

Started by yahya2021

2 Replies
8599 Views
Last post 29/03/21 16:17
by dlparkhurst
Equilibration with several solutions

Started by MichaelZ20

2 Replies
8604 Views
Last post 28/03/18 20:40
by MichaelZ20
Forcing all supersaturated minerals to precipitate

Started by rockman

2 Replies
8617 Views
Last post 13/12/16 22:44
by rockman
Can I use PHREEQC to create a Temperature-Pressure Phase diagram for CO2?

Started by Jeonghwan Hwang

1 Replies
8623 Views
Last post 09/11/20 15:55
by dlparkhurst
CaSO4 solubility

Started by IliasBouchkira

1 Replies
8632 Views
Last post 31/03/20 22:24
by dlparkhurst
Calcium impact on uranium

Started by Chemistry

3 Replies
8634 Views
Last post 11/10/24 01:56
by Chemistry
Granite dissolution and Clay precipitation

Started by N_Harpers

1 Replies
8659 Views
Last post 10/08/20 14:45
by dlparkhurst
Activities of Seawater constituents

Started by Kaushik Mitra

1 Replies
8671 Views
Last post 30/06/15 14:55
by dlparkhurst
pressure effect on molar volumes

Started by manofhope

1 Replies
8673 Views
Last post 28/01/20 16:37
by dlparkhurst
Solid solutions in non equilibrium conditions

Started by srohmen

3 Replies
8699 Views
Last post 04/04/17 23:15
by dlparkhurst
pH curve in calcite dissolution and Fe precipitation

Started by pia said

2 Replies
8701 Views
Last post 12/08/19 22:05
by pia said
fake-phases

Started by PrestoConFuoco

1 Replies
8733 Views
Last post 03/12/18 20:04
by dlparkhurst
high concentration of salinity and phreeqc

Started by Scarlet

1 Replies
8737 Views
Last post 18/06/20 22:12
by dlparkhurst
CPS reactivity

Started by mmhassan

2 Replies
8742 Views
Last post 11/03/25 07:05
by mmhassan
Enthalpy of Mackinawite precipitaion

Started by Sifat Azad Papry

1 Replies
8748 Views
Last post 18/10/23 00:09
by dlparkhurst
Calculate solubility vs. temperatures for new designed phases or solid solutions

Started by sydxajie

1 Replies
8750 Views
Last post 06/05/20 02:51
by dlparkhurst
Reaction time between groundwater and minerals

Started by Matsumoto

2 Replies
8761 Views
Last post 09/11/22 03:12
by Matsumoto
Kinetic reaction between groundwater and bentonite

Started by Daehyun

4 Replies
8762 Views
Last post 22/05/24 07:22
by Daehyun
Precipitating Certain Minerals

Started by Dwalker

1 Replies
8771 Views
Last post 02/07/15 21:05
by dlparkhurst
writing BASIC code within PHASES datablock

Started by docla

2 Replies
8775 Views
Last post 09/02/16 16:45
by docla
Understanding Beaker Reaction Results

Started by swhit

3 Replies
8775 Views
Last post 19/07/19 10:19
by dlparkhurst
Dynamic water volume change in kinetic model

Started by conghaoyi

3 Replies
8777 Views
Last post 13/02/25 18:00
by dlparkhurst
Serpentinization

Started by Olivine

1 Replies
8785 Views
Last post 26/11/23 20:11
by dlparkhurst
Mineral sediment

Started by Anya

1 Replies
8786 Views
Last post 01/02/25 15:19
by dlparkhurst
pyrite oxidation

Started by cjbrown

2 Replies
8799 Views
Last post 17/08/18 17:19
by cjbrown
sedimentation SiO2

Started by Aksenova

2 Replies
8819 Views
Last post 26/02/24 03:54
by Aksenova
Precipitation rates

Started by Ami

4 Replies
8853 Views
Last post 10/05/24 15:44
by Ami
Precipitation of Salts upon Freezing

Started by liamkun

2 Replies
8870 Views
Last post 23/08/19 12:42
by MichaelZ20
Data fitting & Pitzer parameters

Started by IliasBouchkira

1 Replies
8879 Views
Last post 22/01/21 16:38
by dlparkhurst
Where does the O2 come from?

Started by steven

2 Replies
8889 Views
Last post 04/06/15 00:53
by steven
13C isotopes and TDIC on addition of soil CO2 to an infiltrating rainwater

Started by catafsi

3 Replies
8889 Views
Last post 24/07/22 23:25
by dlparkhurst
Chemical Weathering in changing rock-water ratio

Started by Arindam Basu

2 Replies
8900 Views
Last post 16/09/21 19:43
by Arindam Basu
Calcium Carbonate Precipitation Potential - Setup and Interpretation of Results

Started by EV_8221

1 Replies
8923 Views
Last post 12/07/23 16:29
by dlparkhurst
Electrical conductivity drops in the brine

Started by rudolff16

2 Replies
8924 Views
Last post 25/08/20 19:12
by dlparkhurst
NH3(g) - water equilibrium under increasing pressures

Started by C3

3 Replies
8927 Views
Last post 14/06/23 20:12
by C3
How to enter AlF3 in the equilibrium phase block with a target SI

Started by atoumari

2 Replies
8927 Views
Last post 13/07/19 02:55
by atoumari
PHREEQC unable to predict the precipitation of NaCl

Started by Tameka D

2 Replies
8933 Views
Last post 24/04/18 16:02
by Tameka D
Stop Precipitation from Changing the Solution Isotope Ratio

Started by King

3 Replies
8938 Views
Last post 18/03/22 00:07
by dlparkhurst
All phases of the database in the simulation.

Started by PrestoConFuoco

2 Replies
8967 Views
Last post 07/01/19 18:24
by John Mahoney
Dolomitization in PHREEQC

Started by trungka

1 Replies
8976 Views
Last post 30/05/19 16:21
by dlparkhurst
How do I input precipitation reactions?

Started by olivertheseira

1 Replies
9010 Views
Last post 28/10/15 23:56
by dlparkhurst
Lithium geochemistry

Started by ElzaD

2 Replies
9011 Views
Last post 05/11/24 19:18
by ElzaD
calcite, dolomite and cation exchange

Started by grk1

3 Replies
9013 Views
Last post 29/05/23 13:48
by dlparkhurst
Simulation of hydrogen dissolution in pure water

Started by Elza MA

2 Replies
9034 Views
Last post 02/09/19 09:24
by Elza MA
why halite or mirabilite do not precipitate after total evaporation?

Started by P.Merdy

2 Replies
9040 Views
Last post 14/08/20 20:43
by P.Merdy
Introducing ion carbonate (CO3-2) to a solution

Started by maria15143

2 Replies
9065 Views
Last post 07/10/23 15:43
by maria15143
Formation of Fe(OH)2

Started by JEntwistle_10

3 Replies
9066 Views
Last post 03/10/16 11:24
by JEntwistle_10
Distribution of species and SI

Started by edward

3 Replies
9079 Views
Last post 12/07/18 20:20
by John Mahoney
Mineral Dissolution as a Function of pH

Started by OmranS

3 Replies
9102 Views
Last post 23/11/22 22:17
by dlparkhurst
Simulating CO₂-Dissolved Solution Interaction with Rock and Cement Min

Started by ahmalisha

4 Replies
9129 Views
Last post 01/12/24 14:39
by dlparkhurst
Simulating calcite precipitation driven by silicate weathering

Started by poong9

2 Replies
9147 Views
Last post 13/04/21 02:37
by poong9
Calculating Saturation Concentration of Ca(OH)2 in the Presence of HCl using PHR

Started by anaamine

3 Replies
9166 Views
Last post 02/07/23 20:46
by dlparkhurst
Co-precipitation

Started by Cami

3 Replies
9172 Views
Last post 28/01/21 21:21
by dlparkhurst
Calcite dissolution under low (fixed) pH and varying pressure

Started by mr85woly

2 Replies
9177 Views
Last post 21/01/21 16:38
by mr85woly
Equilibrium_Phases and pH

Started by steven

1 Replies
9197 Views
Last post 20/06/15 00:20
by dlparkhurst
Precipitating minerals in a complex system

Started by Olasz Tamas

2 Replies
9215 Views
Last post 03/02/21 16:06
by Olasz Tamas
HOW transfer H2SiO3 to SiO2?

Started by yyyphreeqc

3 Replies
9237 Views
Last post 12/02/23 19:38
by dlparkhurst
Theoretical vs realistic precipitation

Started by Mannes

3 Replies
9242 Views
Last post 27/05/16 22:24
by John Mahoney
Problem with dissolution

Started by Sergio913

2 Replies
9246 Views
Last post 03/07/20 16:20
by John Mahoney
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"Maclnnes"

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P

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H2S(g) solubility

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Dissolution of Ferrihydrite following reaction with organic carbon

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