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Subject / Started by Replies / Views Last post
Dissolution of Ferrihydrite following reaction with organic carbon

Started by lswerhone

2 Replies
88 Views
Last post 20/05/25 16:00
by lswerhone
Mineral dissolution and precipitation

Started by Mira

3 Replies
176 Views
Last post 04/05/25 20:44
by dlparkhurst
Co2 mineralization

Started by Amr khan

9 Replies
648 Views
Last post 26/04/25 01:46
by Amr khan
Portland Cement Hydration at high temperature

Started by chliu8219

3 Replies
164 Views
Last post 23/04/25 23:38
by dlparkhurst
SiO2 in different databases

Started by Aksenova

1 Replies
272 Views
Last post 14/04/25 03:41
by dlparkhurst
Sedimentent as SiO2

Started by Aksenova

27 Replies
1604 Views
Last post 13/04/25 00:23
by dlparkhurst
Acrylic polymers

Started by Mar246Daisy0

2 Replies
325 Views
Last post 09/04/25 07:56
by Mar246Daisy0
CPS reactivity

Started by mmhassan

2 Replies
427 Views
Last post 11/03/25 07:05
by mmhassan
CO2 dissolved in water to react with rock

Started by ahmalisha

12 Replies
1146 Views
Last post 08/03/25 17:49
by dlparkhurst
H2S(g) solubility

Started by Helge

4 Replies
382 Views
Last post 07/03/25 17:38
by dlparkhurst
EQUILIBRIUM_PHASES understand

Started by robertaasa

3 Replies
502 Views
Last post 27/02/25 17:00
by dlparkhurst
Modeling metal hydroxide solubility as a function of ligand concentration

Started by Hysu

3 Replies
379 Views
Last post 27/02/25 03:00
by dlparkhurst
Negative mols of Si error

Started by Mgill9460

8 Replies
616 Views
Last post 20/02/25 20:41
by dlparkhurst
Water Rock reaction with Supercritical CO2

Started by zscowcrofst

8 Replies
609 Views
Last post 19/02/25 23:07
by zscowcrofst
Dissolution of HFO and Release of Arsenic

Started by DLipson

4 Replies
435 Views
Last post 15/02/25 22:45
by DLipson
Dynamic water volume change in kinetic model

Started by conghaoyi

3 Replies
497 Views
Last post 13/02/25 18:00
by dlparkhurst
Mineral sediment

Started by Anya

1 Replies
340 Views
Last post 01/02/25 15:19
by dlparkhurst
Add lithium dissociating and hydrolyzing species to code

Started by Topskeer

1 Replies
404 Views
Last post 28/01/25 15:58
by dlparkhurst
Cement Hydration

Started by rockson.aluah@und.edu

9 Replies
678 Views
Last post 16/01/25 17:42
by dlparkhurst
Modification of Pitzer Ion interaction Parameters

Started by RenAmb

1 Replies
296 Views
Last post 14/01/25 19:33
by dlparkhurst
Dissolution of calcite during hydrogen storage in the presence of CO2 and ions

Started by MMMM

2 Replies
511 Views
Last post 11/01/25 19:53
by MMMM
Possible to add a legend to define time periods on porosity-distance plots?

Started by rworden

2 Replies
782 Views
Last post 14/12/24 08:38
by rworden
Obtaining PHREEQC results in each cell of a 3D PHAST model

Started by appups

2 Replies
621 Views
Last post 13/12/24 16:26
by dlparkhurst
Geothermal Bore Scaling

Started by AntonioG

2 Replies
660 Views
Last post 11/12/24 05:41
by AntonioG
Stable phases were obtained even with 0 ppm of ions concentration

Started by rkramamoorthy

3 Replies
610 Views
Last post 08/12/24 05:22
by dlparkhurst
Effect of density in Saturation Index

Started by DFhidro

1 Replies
566 Views
Last post 04/12/24 21:55
by dlparkhurst
Correct way to model porosity change

Started by Nourah

7 Replies
1134 Views
Last post 03/12/24 05:09
by dlparkhurst
Could not reduce equation to secondary master species, Y+3.

Started by rkramamoorthy

7 Replies
966 Views
Last post 02/12/24 17:34
by dlparkhurst
Simulating CO₂-Dissolved Solution Interaction with Rock and Cement Min

Started by ahmalisha

4 Replies
793 Views
Last post 01/12/24 14:39
by dlparkhurst
Speciation of solution chemistry

Started by Anvj0705

7 Replies
844 Views
Last post 21/11/24 17:16
by dlparkhurst
Large Percentage Error (up to 47%) in Saturation Index Calculation

Started by Fadeji01

1 Replies
486 Views
Last post 18/11/24 15:20
by dlparkhurst
Partial Pressure of CO2 with respect to pressure

Started by serhatttt

1 Replies
586 Views
Last post 15/11/24 14:48
by dlparkhurst
Setting Solution Volume for Dissolution/Precipitation Reactions

Started by ZYWTDaEO6

1 Replies
573 Views
Last post 09/11/24 18:01
by dlparkhurst
Hydrogen solubility

Started by Seymensch

1 Replies
653 Views
Last post 07/11/24 16:36
by dlparkhurst
basalt dissolution

Started by onat.yakisik

25 Replies
2778 Views
Last post 06/11/24 22:03
by dlparkhurst
Lithium geochemistry

Started by ElzaD

2 Replies
729 Views
Last post 05/11/24 19:18
by ElzaD
Ba(x)Ra(1-x)SO4 Solid Solution Precipitation

Started by lswerhone

1 Replies
591 Views
Last post 17/10/24 02:48
by dlparkhurst
Hydrogen Storage in Sandstone reservoir

Started by Seymensch

2 Replies
617 Views
Last post 11/10/24 23:06
by Seymensch
Dissolution of CO2 Gas

Started by Mgill9460

1 Replies
665 Views
Last post 11/10/24 17:17
by dlparkhurst
Calcium impact on uranium

Started by Chemistry

3 Replies
624 Views
Last post 11/10/24 01:56
by Chemistry
Plotting Delta Phase Assemblage for Dissolution

Started by DvS95

2 Replies
812 Views
Last post 09/10/24 20:11
by DvS95
Beaker Dissolution

Started by Bulbasaur

7 Replies
802 Views
Last post 07/10/24 02:28
by dlparkhurst
Calcite dissolution during hydrogen storage

Started by MMMM

2 Replies
835 Views
Last post 08/08/24 15:03
by MMMM
Calcite solubility as function of pH - fails at high pH

Started by mCPBA

3 Replies
881 Views
Last post 22/07/24 22:56
by dlparkhurst
Mean ion activity coefficients of NaCl solutions

Started by ammonge

2 Replies
789 Views
Last post 16/07/24 16:51
by ammonge
Dissolution of NO2

Started by Hamed

6 Replies
890 Views
Last post 13/07/24 20:19
by dlparkhurst
Complete removal of dissolved Fe as saponite

Started by leocwang

2 Replies
744 Views
Last post 03/07/24 02:10
by leocwang
Mixing and evaporation prior to infiltration

Started by Merche

1 Replies
765 Views
Last post 16/06/24 20:00
by dlparkhurst
Is it possible to visualize the chemical prediction equilibrium equations?

Started by Juan Sebastian

2 Replies
785 Views
Last post 15/06/24 00:39
by Juan Sebastian
Heating water in concrete lined borehole - geochemical changes

Started by ross

1 Replies
711 Views
Last post 14/06/24 15:36
by dlparkhurst
pH Fix and Precipitation

Started by NicolevJ

2 Replies
2668 Views
Last post 12/06/24 21:13
by marcomaro90
Pore space

Started by Aksenova

1 Replies
695 Views
Last post 04/06/24 22:35
by dlparkhurst
Dissolution of phosphates in a granite

Started by RadiantRocks23

2 Replies
1108 Views
Last post 23/05/24 11:27
by RadiantRocks23
Negative temperature dependency of solubility of Nahcolite , pitzer.dat ?

Started by TobiasHogen

2 Replies
784 Views
Last post 22/05/24 15:58
by TobiasHogen
methane carbon isotopes fractionation

Started by Mr.white

0 Replies
697 Views
Last post 22/05/24 09:17
by Mr.white
Kinetic reaction between groundwater and bentonite

Started by Daehyun

4 Replies
989 Views
Last post 22/05/24 07:22
by Daehyun
Pitzer.dat

Started by INZILLO

2 Replies
827 Views
Last post 16/05/24 07:07
by INZILLO
Precipitation rates

Started by Ami

4 Replies
1005 Views
Last post 10/05/24 15:44
by Ami
Dissolution reaction of uranium rocks depending on the redox state

Started by inhee

3 Replies
1029 Views
Last post 08/05/24 00:13
by dlparkhurst
Saturation index

Started by Aksenova

1 Replies
786 Views
Last post 07/05/24 14:10
by dlparkhurst
Reaction-kinetic program failing after 1000 seconds of simulation

Started by Nitin

9 Replies
2162 Views
Last post 02/05/24 05:09
by dlparkhurst
Determine the saturation index (SI)

Started by Aksenova

1 Replies
940 Views
Last post 19/04/24 00:03
by dlparkhurst
Cement scCO2 interaction

Started by zscowcrofst

4 Replies
1349 Views
Last post 17/04/24 02:52
by zscowcrofst
Sedimetent as SiO2

Started by Aksenova

28 Replies
3200 Views
Last post 10/04/24 09:42
by Aksenova
Hydrogen solubility in distilled water vs pressure

Started by MMMM

5 Replies
1361 Views
Last post 01/04/24 14:01
by MMMM
Silicon precipitation

Started by Anya

3 Replies
999 Views
Last post 29/03/24 15:40
by dlparkhurst
Predict pore water concentrations using other geochem data?

Started by FClBrI

1 Replies
943 Views
Last post 14/03/24 15:01
by dlparkhurst
Modelling Ca-carbonate precipitation

Started by Bulbasaur

6 Replies
1359 Views
Last post 13/03/24 10:58
by Bulbasaur
sedimentation SiO2

Started by Aksenova

2 Replies
1042 Views
Last post 26/02/24 03:54
by Aksenova
Mean GAM question

Started by IliasBouchkira

1 Replies
1108 Views
Last post 31/01/24 14:45
by dlparkhurst
Hydrothermal dolomitization

Started by Eivind_Vagle

2 Replies
1013 Views
Last post 19/01/24 09:45
by Eivind_Vagle
Aragonite and Calcite precipitation question

Started by Khaled

1 Replies
1051 Views
Last post 17/01/24 23:07
by dlparkhurst
How to save a mixture Aqueous Solution+Solids ?

Started by jerome

5 Replies
3976 Views
Last post 15/01/24 02:44
by dlparkhurst
Simultaneous dissolution of mineral and CO2

Started by Pakan

5 Replies
1730 Views
Last post 22/12/23 21:26
by Pakan
Pyrite dissolution at pH range

Started by Anvj0705

4 Replies
1379 Views
Last post 01/12/23 11:07
by dlparkhurst
Solubility kinetics PHREEQC

Started by IliasBouchkira

1 Replies
1143 Views
Last post 27/11/23 14:54
by dlparkhurst
Serpentinization

Started by Olivine

1 Replies
1384 Views
Last post 26/11/23 20:11
by dlparkhurst
Reaction of Iron with bisulfide

Started by Sifat Azad Papry

1 Replies
1001 Views
Last post 02/11/23 16:55
by dlparkhurst
Dolomite and calcite precipitation in geothermal system

Started by AntonioG

4 Replies
1571 Views
Last post 31/10/23 00:26
by AntonioG
dissolution & precipitation thioarsenate

Started by chaoyu

1 Replies
2189 Views
Last post 27/10/23 05:26
by dlparkhurst
Phreeqc Python MgOH2 Precipitation Example

Started by EV_8221

1 Replies
1139 Views
Last post 21/10/23 21:01
by dlparkhurst
Enthalpy of Mackinawite precipitaion

Started by Sifat Azad Papry

1 Replies
1088 Views
Last post 18/10/23 00:09
by dlparkhurst
Introducing ion carbonate (CO3-2) to a solution

Started by maria15143

2 Replies
1329 Views
Last post 07/10/23 15:43
by maria15143
FeS(ppt) and Mackinawite

Started by Model1

3 Replies
3587 Views
Last post 26/09/23 20:53
by dlparkhurst
Mackinawite precipitation as a function of pH

Started by Sifat Azad Papry

6 Replies
1511 Views
Last post 19/09/23 20:33
by dlparkhurst
Dissolution/Precipitation with time

Started by Nitin

1 Replies
1256 Views
Last post 02/09/23 15:12
by dlparkhurst
Precipitation of Li2CO3 at different temperatures

Started by seanshi40@gmail.com

4 Replies
1443 Views
Last post 09/08/23 16:25
by seanshi40@gmail.com
Calcium Carbonate Precipitation Potential - Setup and Interpretation of Results

Started by EV_8221

1 Replies
1477 Views
Last post 12/07/23 16:29
by dlparkhurst
Halite Precipitation

Started by DFhidro

1 Replies
1047 Views
Last post 10/07/23 17:34
by dlparkhurst
Calculating Saturation Concentration of Ca(OH)2 in the Presence of HCl using PHR

Started by anaamine

3 Replies
1318 Views
Last post 02/07/23 20:46
by dlparkhurst
NH3(g) - water equilibrium under increasing pressures

Started by C3

3 Replies
1370 Views
Last post 14/06/23 20:12
by C3
calcite, dolomite and cation exchange

Started by grk1

3 Replies
1480 Views
Last post 29/05/23 13:48
by dlparkhurst
ERROR: Numerical method failed on all combinations of convergence parameters

Started by andyql

2 Replies
1228 Views
Last post 17/05/23 07:30
by andyql
How to plot time vs concentration.

Started by lorerave

1 Replies
1214 Views
Last post 03/04/23 15:59
by dlparkhurst
Sodium Oxalate solubility

Started by Sinaatalebi

5 Replies
1600 Views
Last post 30/03/23 04:58
by dlparkhurst
Looking for help to solve errors "Element or phase not defined in database"

Started by Max0109

1 Replies
1251 Views
Last post 13/03/23 19:12
by dlparkhurst
Equilibrium phases and isotopes

Started by Flopi

8 Replies
3345 Views
Last post 12/03/23 19:13
by dlparkhurst
HOW transfer H2SiO3 to SiO2?

Started by yyyphreeqc

3 Replies
1599 Views
Last post 12/02/23 19:38
by dlparkhurst
Relationship between uraninite and gypsum

Started by Jeonghwan Hwang

11 Replies
2168 Views
Last post 06/01/23 06:38
by dlparkhurst
Strange mineral precipitation behavior?

Started by ellisone

1 Replies
1281 Views
Last post 19/12/22 16:33
by dlparkhurst
Hydrogen dissolution in brine

Started by ylg

4 Replies
2239 Views
Last post 07/12/22 14:17
by dlparkhurst
Mineral dissolution sequence

Started by Jay Chou

2 Replies
1425 Views
Last post 01/12/22 03:30
by dlparkhurst
Mineral Dissolution as a Function of pH

Started by OmranS

3 Replies
1646 Views
Last post 23/11/22 22:17
by dlparkhurst
Impact of gypsum equilibrium on pyrite oxidation

Started by emkau

2 Replies
1431 Views
Last post 22/11/22 16:55
by MichaelZ20
Evaporation

Started by samia22

1 Replies
1294 Views
Last post 14/11/22 19:13
by dlparkhurst
Temperature effects on Uraninite precipitation

Started by Jeonghwan Hwang

2 Replies
1284 Views
Last post 11/11/22 05:22
by Jeonghwan Hwang
Reaction time between groundwater and minerals

Started by Matsumoto

2 Replies
1342 Views
Last post 09/11/22 03:12
by Matsumoto
Mineral Precipitation

Started by serhatttt

2 Replies
1533 Views
Last post 06/11/22 10:41
by serhatttt
Saturation Index

Started by dat

13 Replies
3220 Views
Last post 20/10/22 15:11
by dlparkhurst
Density and EC calculations following dissolution

Started by Jacob

2 Replies
1447 Views
Last post 18/10/22 05:30
by Jacob
Precipitation: Fixating pH on measured pH & Acidification with HCl

Started by cdelvalleve

1 Replies
1561 Views
Last post 18/08/22 17:11
by dlparkhurst
13C isotopes and TDIC on addition of soil CO2 to an infiltrating rainwater

Started by catafsi

3 Replies
1587 Views
Last post 24/07/22 23:25
by dlparkhurst
How to calcuate simple saturation indices

Started by Rachael

1 Replies
1432 Views
Last post 17/07/22 14:12
by dlparkhurst
Acid Strength's Influence on logK Value

Started by OmranS

1 Replies
1331 Views
Last post 13/06/22 23:21
by dlparkhurst
Is it possible to calculate SI of a mineral without having an element analyzed?

Started by toupis12

1 Replies
1438 Views
Last post 31/05/22 15:54
by dlparkhurst
The amount of mineral precipitation

Started by Jay Chou

3 Replies
2158 Views
Last post 28/03/22 15:46
by dlparkhurst
Guidance of evaporation simulation results

Started by 2012HHU

7 Replies
2909 Views
Last post 21/03/22 02:27
by 2012HHU
Stop Precipitation from Changing the Solution Isotope Ratio

Started by King

3 Replies
1617 Views
Last post 18/03/22 00:07
by dlparkhurst
Calculating Solubility in Open System with high pH

Started by bschroth

7 Replies
2610 Views
Last post 15/03/22 20:34
by bschroth
Evaporation simulation study

Started by Jay Chou

4 Replies
2744 Views
Last post 02/01/22 02:17
by Jay Chou
Modelling first-order kinetic reaction correctly

Started by Ellis

3 Replies
2096 Views
Last post 21/12/21 16:56
by dlparkhurst
How to use the saved aqueous solution+solids i the subsequent simulation?

Started by Titanium

1 Replies
1777 Views
Last post 08/12/21 15:31
by dlparkhurst
Burkeite Scale

Started by Sinaatalebi

1 Replies
1661 Views
Last post 28/11/21 22:22
by dlparkhurst
Calcite polymorphs

Started by KirstyH

2 Replies
1786 Views
Last post 11/11/21 12:06
by KirstyH
PHREEQC versus theoretical precipitation via ICE tables

Started by freiburgermsu

6 Replies
1737 Views
Last post 09/11/21 18:14
by freiburgermsu
Desalination PHREEQpy applications -- ROSSpy

Started by freiburgermsu

12 Replies
5902 Views
Last post 06/11/21 17:19
by freiburgermsu
formation water

Started by ehsan

33 Replies
4094 Views
Last post 05/11/21 14:43
by dlparkhurst
How to model an incremental serie of batch

Started by tneron

1 Replies
1525 Views
Last post 29/10/21 16:14
by dlparkhurst
Source/sink term in Eq. 107 of Phreeqc’s manual (version 2)

Started by gia

1 Replies
1393 Views
Last post 27/10/21 07:03
by dlparkhurst
CO2 temperatur and pressure effects

Started by yuku

1 Replies
1664 Views
Last post 15/10/21 00:41
by dlparkhurst
Chemical Weathering in changing rock-water ratio

Started by Arindam Basu

2 Replies
1847 Views
Last post 16/09/21 19:43
by Arindam Basu
Maximum iterations exceeded

Started by weiwei han

8 Replies
2430 Views
Last post 09/09/21 09:57
by dlparkhurst
Help with Kinetic reactions

Started by spence

7 Replies
3762 Views
Last post 01/09/21 19:08
by dlparkhurst
Attempting to quantify secondary reactions in Fo80 olivine weathering

Started by JackPTRoden

2 Replies
2184 Views
Last post 02/08/21 13:33
by JackPTRoden
Calculating precipitation

Started by KirstyH

8 Replies
4615 Views
Last post 20/06/21 17:31
by dlparkhurst
Simulating calcite precipitation driven by silicate weathering

Started by poong9

2 Replies
2074 Views
Last post 13/04/21 02:37
by poong9
Element has not converged problem

Started by IliasBouchkira

1 Replies
1803 Views
Last post 07/04/21 18:55
by dlparkhurst
Magnesium Silicate Co-precipitation

Started by PAILLEF

4 Replies
1945 Views
Last post 31/03/21 17:13
by PAILLEF
Diagram plot

Started by yahya2021

2 Replies
1691 Views
Last post 29/03/21 16:17
by dlparkhurst
P

Started by AnnaJulIQ

4 Replies
2068 Views
Last post 25/03/21 03:06
by dlparkhurst
ZINC LEACHING WITH LACTATE

Started by AnnaJulIQ

1 Replies
1717 Views
Last post 07/03/21 19:21
by dlparkhurst
HELP! How to write PhreeqC input for calcite dissolution

Started by yijing84

3 Replies
3854 Views
Last post 01/03/21 18:08
by AnnaJulIQ
Evaluating gas phase composition from solution and pressure data

Started by larsaste

9 Replies
3133 Views
Last post 22/02/21 19:17
by larsaste
Jeisonb

Started by Jeisonb

0 Replies
1495 Views
Last post 17/02/21 00:06
by Jeisonb
Precipitating minerals in a complex system

Started by Olasz Tamas

2 Replies
2070 Views
Last post 03/02/21 16:06
by Olasz Tamas
Co-precipitation

Started by Cami

3 Replies
1849 Views
Last post 28/01/21 21:21
by dlparkhurst
Surface not using ferrihydrite concentration

Started by aleoconn

5 Replies
1908 Views
Last post 28/01/21 03:42
by dlparkhurst
Data fitting & Pitzer parameters

Started by IliasBouchkira

1 Replies
1781 Views
Last post 22/01/21 16:38
by dlparkhurst
Calcite dissolution under low (fixed) pH and varying pressure

Started by mr85woly

2 Replies
1828 Views
Last post 21/01/21 16:38
by mr85woly
Quatrz(a) and Qartz(am)

Started by IliasBouchkira

1 Replies
1448 Views
Last post 16/12/20 14:55
by dlparkhurst
References and Handbooks for solubility (Ks) of Mg-Si-F based minerals

Started by IliasBouchkira

0 Replies
1613 Views
Last post 23/11/20 15:55
by IliasBouchkira
Can I use PHREEQC to create a Temperature-Pressure Phase diagram for CO2?

Started by Jeonghwan Hwang

1 Replies
1773 Views
Last post 09/11/20 15:55
by dlparkhurst
Database selection for solid precipitation

Started by IliasBouchkira

4 Replies
2184 Views
Last post 04/11/20 21:22
by dlparkhurst
Way to define dissolved oxygen.

Started by Sol-Chan Han

8 Replies
4174 Views
Last post 16/09/20 18:06
by Sol-Chan Han
Gas phase weathering

Started by ylg

5 Replies
2816 Views
Last post 27/08/20 15:16
by dlparkhurst
Electrical conductivity drops in the brine

Started by rudolff16

2 Replies
1838 Views
Last post 25/08/20 19:12
by dlparkhurst
why halite or mirabilite do not precipitate after total evaporation?

Started by P.Merdy

2 Replies
1944 Views
Last post 14/08/20 20:43
by P.Merdy
Granite dissolution and Clay precipitation

Started by N_Harpers

1 Replies
1963 Views
Last post 10/08/20 14:45
by dlparkhurst
Hydrogen Storage

Started by kadie89

5 Replies
3271 Views
Last post 28/07/20 18:46
by dlparkhurst
Problem with dissolution

Started by Sergio913

2 Replies
1786 Views
Last post 03/07/20 16:20
by John Mahoney
Gypsum solubility in sulfuric acid

Started by IliasBouchkira

3 Replies
2186 Views
Last post 23/06/20 22:01
by dlparkhurst
Help with kinetic Calcite precipitation

Started by floydian86

8 Replies
3778 Views
Last post 19/06/20 14:56
by MichaelZ20
high concentration of salinity and phreeqc

Started by Scarlet

1 Replies
1701 Views
Last post 18/06/20 22:12
by dlparkhurst
NH3-N as an input

Started by djb14128

5 Replies
2193 Views
Last post 28/05/20 15:58
by dlparkhurst
Mass fluxes and partial pressures of NH3 and H2O vapour

Started by djb14128

2 Replies
1814 Views
Last post 28/05/20 09:14
by djb14128
Dissolution from unknown mineral phases

Started by Loreto Martínez

1 Replies
1916 Views
Last post 13/05/20 22:43
by dlparkhurst
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fake-phases

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