Abstract:　Robust　amphiprotic-konjac　glucomannan/chitosan　(AP-KGM/CS)　aerogels　were　prepared　by　modification　of　KGM　with　carboxymethyl　and　quaternary　ammonium　groups,　and　then　cross-linked　with　chitosan.　The　adsorption　performance　of　AP-KGM/CS　aerogels　on　the　anionic　dyes　everacid　Orange　N-G　(C.I.　Acid　Orange　O56),　cationic　dyes　methylene　blue　(MB)　and　heavy　metal　ions　(Pb2+,　Cu2+,　Cd2+)　was　investigated.　The　open　porous　structure　of　the　aerogel　has　a　significant　effect　on　maintaining　the　structural　stability　of　aerogel　and　promoting　the　diffusion　and　transfer　of　pollutants　to　ensure　adequate　contact　between　pollutants　and　adsorption　sites.　The　adsorption　equilibrium　of　anionic　dye　O56　and　cationic　dye　MB　was　reached　within　300 min,　and　the　saturated　adsorption　capacities　were　267 mg/g　and　348 mg/g,　respectively.　Besides,　the　adsorption　equilibrium　of　single　metal　ions　Pb2+,　Cu2+,　and　Cd2+　was　reached　within　120 min,　and　their　saturated　adsorption　capacities　were　469 mg/g,　254 mg/g　and　144 mg/g,　respectively.　Moreover,　under　the　competitive　adsorption　of　three　heavy　metal　ions,　the　equilibrium　adsorption　time　of　Pb2+,　Cu2+,　and　Cd2+　in　the　mixed　solutions　(each　with　a　concentration　of　600 mg/L)　was　240 min,　150 min　and　70 min,　respectively,　and　their　saturated　adsorption　capacities　were　318 mg/g,　184 mg/g　and　94 mg/g,　respectively.　Graphic　abstract:　[Figure　not　available:　see　fulltext.].　©　2019,　Springer　Nature　B.V.