The machines are running and there is no effect on the pollution.

I investigate a bit, it seems that changing the property "emissions" by "emissions_per_minute" in the file entity.lua makes the machines working again (adjusting the value accordingly).

For example for a "air-filter-machine-mk1",

energy_source =
{
  type = "electric",
  usage_priority = "secondary-input",
  emissions_per_minute = -15.0
},

Your mod could be a great mod, thank you

PS: i try a game with these values

"air-filter-machine-mk1":
emissions_per_minute = -15.0
"air-filter-machine-mk2":
emissions_per_minute = -45
"air-filter-machine-mk3":
emissions_per_minute = -225
"air-filter-machine-mk4":
emissions_per_minute = -1125
"air-filter-machine-mk5":
emissions_per_minute = -5625
"air-filter-machine-mk6":
emissions_per_minute = -10000

These values may be too high. It needs balancing

worked on my test play but i read that "emissions" will be getting removed "at some point in time". the values are ok becase they are compensated with high power requirements

Pollution doesn't seem to be reduced in my game either.

i should have a new update by the end of the week. in my game the old way worked but when i started a new game it didnt work. been busy with other stuff to check it all before i release it but its in progress

Any progress on update?

Edit:
For now I edited updated the mod myself and set basic emission to -16.67 pollution per minute for Air filter machine MK1. MK2 - MK6 I've set to multipliers of MK1 according to their crafting speed multiplier (but with proper rounding):

MK1 : -16.67
MK2 : -33.34
MK3 : -83.34
MK4 : -125.0
MK5 : -166.67
MK6 : -250.0

I based this value on the 12 times the amount of pollution generated by an electric furnace in relation to furnaces energy consumption (12x 1 pollution /m, 180kW) and increased this to match 250kW usage ofAir filter machine MK1. I then rounded it down (by about 0.02) to 16.67.

That means that a basic Boiler that generates 30 pollution / m and can generate up to 1 800 kW of power, you spend ~445 kw of it on clearing pollution, making Boilers ~75% as effective but 100% eco friendly (this however does not include any pollution and energy spend on creating air filters themselves).

I also changed unused air filter to last 60 seconds in MK1 machine (so a belt of plates in "naked" electric furnaces uses 2 filters per minute with some filtering capacity to spare).