This　study　investigated　the　way　in　which　the　modified　adsorbent　diatomite　earth　and　glucose　(DE　&　C)　content　affects　the　removal　of　crystal　violet　(CV)　from　water　using　a　fixed　bed　column　during　hydrothermal　carbonization.　Fourier　transform　infrared　spectroscopy　results　demonstrated　the　importance　of　functional　groups　(carbonyl　and　amino)　during　CV　adsorption.　The　calculations　showed　the　particle　strength　of　DE　&　C　was　excellent.　Scanning　electron　microscope　images,　energy　dispersive　spectrometry,　Brunauer-Emmett-Teller　analysis　and　Barrett-Joyner-Halenda　analysis　showed　where　the　carbon　species　and　pore　structure　provided　highly　favorable　adsorption　conditions.　These　characteristics　indicated　that　DE　&　C　is　an　excellent　porous　adsorbent.　Five　different　levels　of　glucose　content　in　the　DE　&　C　were　tested　in　the　fixed　bed　column.　Because　of　differences　in　adsorption　capacity,　as　the　breakthrough　time　increased,　the　trend　line　changed　from　a　straight　line　to　an　arc　at　C-t/C-0　=　0-0.1.　The　best　adsorption　capacity　was　reflected　by　the　related　breakthrough　time,　but　there　was　little　change　between　different　saturation　times.　Based　on　the　calculated　data,　the　optimal　glucose/diatomite　ratio　was　found　to　be　6/5,　where　the　excessive　carbon　molecules　blocked　adsorbent　bind　sites　in　the　sample.　The　Thomas　model　was　used　to　determine　the　kinetics　of　CV　column　adsorption.　When　the　CV　concentration　was　200　mg　L-1,　the　flow　rate　was　7.5　mL　min(-1),　the　height　was　5　cm,　and　the　Thomas　model　showed　that　the　maximum　adsorption　capacity　(q(0))　was　87.05　mg　g(-1).　Disparities　in　the　slopes　of　the　bed　depth　service　time　(BDST)　models　showed　that　the　initial　adsorption　efficiency　was　better　than　the　later　adsorption　on　the　DE　&　C.　The　column　packing　was　viable　for　five　adsorption-elution　cycles.