ive heard adding zeolite or similar mineral powders can help it, yesterday i filtered about 300mL of cobalt hydroxide sludge, it wouldnt go through my
lab filter papers designated for filtration but using cotton pads, the round ones women use for makeup works a lot better, but they do have a limit,
so you wanna replace it every now and then and work with a small amount of liquid at a time
if you can by any chance concentrate down the sludge that would maybe be a great idea
as reference filtering aluminium hydroxide is a lost cause, rather you just evaporate it to dryness where the gel will then solidify and once put back
into water it will just barely gel up
otherwise you may wanna look at precipitating out the mess in a different way, the slower the reaction the bigger the "crystals", ive produced
workable piperine sludge by slowly dripping water into an ethanolic solution of piperine i achieved from pepper
i have also seen using more concentrated reagents produced a less spongy and more dense precipitate |