This is what Adams article says:
Just like with towels, separate any extremely dirty or contaminated pads from the group and wash separately to avoid cross contamination.
Wash pads and applicators separate from towels. The foam backing and velcro can become snagged and damaged during agitation by a towel in the same load.
Use a brush to break up heavy, caked in, polish residues on pads before washing.
Microfiber Revitalizer is preferred, but if using regular laundry soap make sure its dye/perfume free.
Set washer to a warm setting, not hot. Pads have a glue membrane that is sensitive to high heat so stick to warm wash water settings.
Air dry all pads and applicators on a wire rack to maximize airflow and expedite drying.
I would read this article here: http://adamspolishes.com/how-to-wash-microfiber-towels