Many　soil　amendments　have　been　proposed　to　exclusively　enhance　the　removal　of　hydrogen　sulphide　(H2S;　one　of　the　major　odorous　gas)　and　reduce　water　percolation/landfill　gas　emission　in　a　municipal　solid　waste　landfill.　There　is　no　reported　data　about　any　single　amendment　that　can　simultaneously　reduce　(i)　gas　permeability　(kg)　and　saturated　water　permeability　(kw)　and　(ii)　H2S　emission.　The　present　study　investigated　the　possible　use　of　nano-activated　carbon　to　amend　the　physico-chemical　properties　of　kaolin,　including　kw,　kg　and　H2S　adsorption　capacity.　It　was　revealed　that　adding　nano-activated　carbon　of　6%　(by　mass)　could　reduce　kw　and　kg　by　about　60%　and　more　than　an　order　of　magnitude,　respectively,　while　increasing　the　H2S　adsorption　capacity　by　more　than　four　times.　©　2019　Elsevier　B.V.