Magnetic　particle　adsorbent　(MPA)　was　prepared　using　iron-containing　sludge　by　solvothermal　process　for　As(V)　removal　from　the　water　solution.　The　magnetic　property,　structure　features,　and　surface　morphology　of　MPA　were　characterized　by　a　vibrating-sample　magnetometer,　X-ray　photoelectron　spectroscopy,　X-ray　diffraction,　scanning　electron　microscopy,　and　Brunauner-Emmett-Teller　analysis.　Laboratory　experiments　were　also　conducted　to　investigate　the　adsorption　capability　and　adaptability　of　MPA　for　As(V)　removal　in　the　water.　MPA　mainly　consisted　of　gamma-Fe2O3,　and　its　saturation　magnetization　is　16.95　emu/g.　It　can　be　simply　separated　from　water　just　using　a　simple　magnet.　It　was　mesoporous　material　with　rough　surface　morphology　and　large　specific　surface　area　(238.7　m(2)/g).　The　Langmuir　adsorption　isotherm　model　could　better　described　the　As(V)　adsorption　behavior　than　the　Freundlich　model,　which　indicated　that　As(V)　adsorbed　on　the　surface　of　MPA　appeared　a　monolayer　distribution.　Maximum　As(V)　adsorption　capacities　at　25,　35,　and　45　degrees　C　were　8.694,　10.050,　and　13.400　mg/g,　respectively.　As(V)　adsorption　onto　MPA　was　jointly　controlled　by　intraparticle　and　film　diffusion　which　was　revealed　by　kinetic　studies.　There　was　no　conspicuous　influence　on　As(V)　adsorption　in　a　broad　range　of　pH　from　3　to　10.　Among　the　coexisting　anions　with　As(V)　in　water,　PO43-,　and　SiO32-　had　obvious　suppression　on　As(V)　adsorption,　while　HCO3-,　SO42-,　and　Cl-　had　negligible　influence.