Is phreeqc open source?

Is phreeqc open source?

We present a new interface between the geochemical simulator PHREEQC and the open source language R. It represents a tool to flexibly and efficiently program and automate every aspect of geochemical modelling.

Is phreeqc free?

This is a manual from a short course on the use of PHREEQC. The program is freeware available from the USGS website.

What does Phreeqc stand for?

The acronym PHREEQC stands for PH (pH), RE (redox), EQ (equilibrium), C (program written in C).

How do you reference Phreeqc?

phreeqc citation info. Parkhurst DL, Appelo CAJ (2013). Description of input and examples for PHREEQC version 3–A computer program for speciation, batch-reaction, one-dimensional transport, and inverse geochemical calculations, volume book 6 series Techniques and Methods. https://pubs.usgs.gov/tm/06/a43.

How do I run Phreeqc on Mac?

Using PHREEQC with Terminal (Mac)

1. find and change the phreeqc.
2. move this whole main phreeqc folder to your Home Directory: Macintosh HD/Users/yourname.
3. drag the phreeqc application from the Bin folder (in the main phreeqc folder) into the main phreeqc folder.

What is Phreeqc used for?

PHREEQC can be used as a speciation program to calculate saturation indices, the distribution of aqueous species, and the density and specific conductance of a specified solution composition.

What is Modflow used for?

MODFLOW is the USGS’s modular hydrologic model. MODFLOW is considered an international standard for simulating and predicting groundwater conditions and groundwater/surface-water interactions.

What does Phreeqc derive at a solution?

PHREEQC allows the concentration of an element to be adjusted to obtain equilibrium (or a specified saturation index or gas partial pressure) with a specified phase, or to obtain charge balance. Solution compositions can be specified with a variety of concentration units.

How do I open a MODFLOW?

To run MODFLOW from the command line, you must first open a command line window. In Windows, select Start|Run. Then in the “Run” window, type “cmd” and click OK. In the command line window, you must first navigate to the folder that contains the MODFLOW input files.

Is the PHREEQC module based on iphreeqc?

Based on IPhreeqc, allows access to all PHREEQC reaction capabilities. Contains methods for initial and boundary conditions, running reactions on all model cells, transfer of data to and from the module, and parallelization by MPI or OpenMP.

Who is the author of PHREEQC version 2?

USER’S GUIDE TO PHREEQC (VERSION 2)— A COMPUTER PROGRAM FOR SPECIATION, BATCH-REACTION, ONE-DIMENSIONAL TRANSPORT, AND INVERSE GEOCHEMICAL CALCULATIONS By David L. Parkhurst and C.A.J. Appelo1

How is the input data arranged in PHREEQC?

The input for PHREEQC is arranged by keyword data bl ocks. Each data block begins with a line that contains the keyword (and possibly additional data) followed by additional lines containing data related to the keyword. The keywords that define the input data for running the pr ogram are listed in table.1.