Normally calcium alginate microbeads can be washed using a filter. In may case filter paper was not wise to use as the size and colour (white) of beads did not allow it. I used a stainless steal (for sterilisation) filter with a desired mesh size. I also used a spatula while washing the beads for an efficient washing and collecting them.
You are try plastic nylon mesh filter socks to separate out your prepared micro-capsules from CaCl2 bath. Drying can be done by just normally spread out your capsules on filter sock and use hair drier or hot air blower, you will also get some idea about its temperature based stability for an certain extent.
Dear Zaeem, if micro-capsules will burst by hot air blower, change the gelation material concentration, CaCl2 concentration and hardening time to achieve more stable capsules.
Actually I am working on fragrance microencapsulation for textiles. Would it be able to with stand up to 200 degree centigrade? What else do you suggest for changing wall material?
I am working on nutrient encapsulation, But I search it on web, a lot of materials are available for wall surface in textiles. Because of scope difference I only help you at this level.