生物炭
吸附
吸附
砷
废水
王水
化学
热解
傅里叶变换红外光谱
吸附剂
响应面法
核化学
香蕉皮
金属
环境化学
废物管理
化学工程
色谱法
有机化学
食品科学
工程类
作者
Dan Bahadur Pal,Arvind Singh,Jay Mant Jha,Neha Srivastava,Abeer Hashem,Maha Abdullah Alakeel,Vijai Kumar Gupta
标识
DOI:10.1016/j.biortech.2021.125606
摘要
In this study, low-cost biochar as bio-adsorbents derived from locally accessible delonix regia seed and date seeds were explored for heavy metal environmental cleaning. These prepared biochars were characterized by proximate and elemental analyses, CHNS/O analysis, Fourier-transformed infrared spectroscopy and thermo-gravitational methods. Bio-sorbent’s ability to adsorb arsenic ions in synthetic wastewater was studied and optimized at varying solution pH, adsorbent dose, and starting metal concentrations. Experimentation and optimization studies were also carried out with the help of Design-software 6.0.8. The trials were designed by using response-surface methods, which includes three components and stages of Box-Behnken design. Date seeds derived-biochars eliminated 95% of arsenic from synthetic wastewater, whereas Delonix regia seeds removed 93.8%. The kinetics, isotherms and mechanism of As adsorption were also postulated. This study proposes that these seed’s biochars might be employed as an effective, low-cost, and environmentally friendly adsorbent to remove heavy metals from the environment.
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