for;
Renewable;
Energy;
and;
Water,;
Vaal;
University;
of;
Technology,;
Vandebijlpark;
1900,;
South;
Africa;
of;
Chemical;
and;
Metallurgical;
Engineering,;
Tshwane;
University;
of;
Technology,;
Pretoria;
0001,;
South;
Africa;
of;
Green;
Chemistry,;
Lappeenranta;
University;
of;
Technology,;
Mikkeli;
FI-50100,;
Finland;