期刊论文

Adsorption Properties of Oiltea Camellia Shell-Modified Biochar and Effects of Coupled Waterlogging on Soil Cd Morphology

Liu, Xiao-Li(zzhxxll@163.com)

中文

环境科学

0250-3301

2021

42

5

2522-2530

10.13227/j.hjkx.202009207

湖南省自然科学基金项目（2020JJ4370）； 国家自然科学基金项目（51409101）；

本校为第一机构

研究选取湖南典型农业废弃物油茶果壳为原材料,尝试采用Na2SiO3溶液浸泡油茶果壳粉末方法,制备改性生物炭（MBC）,并开展不同生物炭材料对溶液中镉（Cd）的吸附与其耦合淹水对土壤中Cd的活性阻控性能研究.用扫描电镜（SEM）、比表面积测试（BET）和傅里叶红外光谱（FTIR）等表征手段对生物炭的物理化学性质进行分析.结果显示,MBC相比未改性生物炭（BC）拥有更大的比表面积与更加丰富的官能团种类,且对溶液中Cd2+具有更强的吸附能力.土壤淹水实验结果表明,淹水可使土壤p H值升高,同时降低酸可溶态Cd组分含量,且随着淹水时间的延长,土壤酸可溶态Cd含量呈逐渐向残渣态转化趋势,而生物炭添加耦合淹水...

Using oiltea camellia shells, a typical agricultural waste, in Hunan as feedstock, Na2SiO3 solution was used to impregnate oiltea camellia shells and modified biochar was prepared under oxygen-limited conditions. We have studied the adsorption efficiencies of Cd in solution by different biochars and the resistance efficiencies of Cd activity in soil by biochars coupled with flooding. Scanning electron microscopy, Brunauer-Emmett-Teller analysis, and Fourier transform infrared spectroscopy were used to reveal the physicochemical properties of th...