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实验研究了一种明胶/氧化淀粉/羟基磷灰石(G/OCS/HAP)干凝胶束对溶液中Cr(VI)和酸性红B的吸附,考察p H、吸附时间以及吸附浓度对吸附率影响。结果表明,在p H=3及吸附温度为25℃环境下,吸附浓度为50mg/L,在50 min时,可达最高吸附(对Cr(VI)吸附率为98.5%,对酸性红B的吸附率为97.1%)。用Na OH溶液循环解析吸附饱和的G/OCS/HAP干凝胶束,再将其循环吸附5次后,结果表明其对Cr(VI)吸附率仍可达93%,同时对酸性红B吸附率可达91%。实验表明G/OCS/HAP干凝胶束可同时对水中的Cr(VI)及酸性红B进行吸附,是一种清洁化可再生的多功能生物杂化吸附凝胶。
The adsorption of Cr (VI) and Acid Red B on a gelatin / oxidized starch / hydroxyapatite (G / OCS / HAP) xerogels was investigated experimentally. The effects of pH, Rate effect. The results showed that the adsorption was 50mg / L under the condition of p H = 3 and the adsorption temperature was 25 ℃, and reached the maximum adsorption at 50 min (the adsorption rate of Cr (VI) was 98.5% Adsorption rate of 97.1%). The adsorption of saturated G / OCS / HAP xerogels with NaOH solution was analyzed by cyclic adsorption. The results showed that the adsorption rate of Cr (VI) was still up to 93% Rate up to 91%. Experiments show that G / OCS / HAP xerogel can adsorb both Cr (VI) and acid red B in water at the same time. It is a kind of clean and renewable multifunctional biological hybrid adsorption gel.