期刊
SURFACES AND INTERFACES
卷 25, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.surfin.2021.101183
关键词
Bioconjugates; Adsorption-desorption; Congo red dye; Kinetics; Regeneration
类别
资金
- Deanship of Scientific Research at Princess Nourah bint Abdulrahman University through the Fast-track Research Funding Program
Sodium alginate-Chlorella and polypyrrole-Chlorella conjugates were synthesized and effectively used for the sequestration of Congo Red dye. Additionally, cultivation of Chlorella strain in municipal wastewater showed significant reduction in total nitrogen, total phosphorus, and COD levels. The results demonstrated the promising potential of PPy/Ch conjugates in removing CR dye from effluents.
Sodium alginate-Chlorella (Na-Alg/Ch) and polypyrrole-Chlorella (PPy/Ch) conjugates were prepared and characterized by SEM, pHPZC and FT-IR techniques. Using de-oiled biomass of Chlorella, the conjugates of Na-Alg/Ch and PPy/Ch were synthesized and employed for the sequestration of Congo Red (CR) dye as a function of various process variables. At optimal conditions of process variables, the PPy/Ch conjugate showed the dye sequestration efficiency of 772.7 mg/g. The maximum CR dye sequestration was achieved at pH 5, dose of the adsorbent 0.05 g, contact time 120 min, 30 degrees C and 50 mg/L initial concentration of the dye. Also, Chlorella strain was cultivated in municipal wastewater, which reduced the total nitrogen (TN), total phosphorus (PP) and COD (chemical oxygen demand) up to 85.5, 88 and 86.4 (%), respectively. The Freundlich isotherm and pseudo second order kinetics models fitted well to the CR dye adsorption data on to the Na-Alg/Ch and PPy/Ch conjugates. The CR dye sequestration on to Na-Alg/Ch and PPy/Ch was a feasible process and exothermic in nature. Results revealed that PPy/Ch conjugates have promising potential to remove CR dye from the effluents.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据