Phosphorus adsorption by calcium chloride-modified buckwheat hulls biochar and the potential application as a fertilizer

Eggshell incorporated agro-waste adsorbent pellets for sustainable orthophosphate capture from aqueous media

“…Concentration of P i (mg L −1 ) p H Fe-zeolite-A 60 18.8 4.725 5 Magnetic Fe-oxide 61 10.9 2-20 2-6 Iron-modied biochar 62 2-3 0 -100 6-5 MIL-101(Al)-CS 63 49.8 30 3-10 Chitosan-La beads 64 107.7 50 4 SP-Zr-La 65 23.5 30 3 La 2 O 2 CO 3 /g-Fe 2 O 3 66 0.14 5-100 6.5 CaCl 2 -buckwheat biochar 67 75.3 5-1000 7 ES-bentonite 68 55.7 15-100 3 Fe(OH) 3 @CNF 69 142.9 10 4.5 Oh50-furfural 58 4.9/1.1 a 0-300 4.75/8.5 MGPA-3 hydrogel 70 38.8 10-150 6 ES-TWS composites (this study) 20-30/1 a 5-1200 4.5…”