Batch and column sorption of arsenic onto iron-impregnated biochar synthesized through hydrolysis

• Published in: Water research (Oxford) Vol. 68; pp. 206 - 216
• Main Authors: Hu, Xin, Ding, Zhuhong, Zimmerman, Andrew R., Wang, Shengsen, Gao, Bin
• Format: Journal Article
• Language: English
• Published: England Elsevier Ltd 01.01.2015
• Subjects: Adsorption; Adsorption mechanism; aqueous solutions; Arsenic; Arsenic - chemistry; Arsenic speciation; biochar; Carya; Characterization; Charcoal - chemistry; chemical speciation; Chemisorption; energy; energy-dispersive X-ray analysis; Filtration - methods; Hydrolysis; Hydroxides; Iron; Iron - chemistry; Low-cost sorbents; Regeneration; scanning electron microscopes; Scanning electron microscopy; Sorption; Specific surface; Spectrometers; Water Pollutants, Chemical - chemistry; Water Purification - methods; X-ray diffraction; Characterization; Arsenic speciation; Regeneration; Low-cost sorbents; Adsorption mechanism

Iron (Fe)-impregnated biochar, prepared through a novel method that directly hydrolyzes iron salt onto hickory biochar, was investigated for its performance as a low-cost arsenic (As) sorbent. Although iron impregnation decreased the specific surface areas of the biochar, the impregnated biochar sho...