文献类型： 外文期刊

作者： Shah, Aanisa Manzoor ¹ ; Khan, Inayat Mustafa ² ; Du, Zhenjie ¹ ; Rasool, Rehana ² ; Kant, Raihana Habib ³ ; Mir, Shakeel ⁴ ; Sheikh, Tahir A. ⁵ ; Wani, Fehim Jeelani ⁶ ; Bhat, M. Ayoub ² ; Bhat, Javid A. ² ; Chesti, M. H. ² ; Ganie, Mumtaz A. ² ; Mir, Yasir Hanif ² ; Dolker, Tsering ² ; Alharbi, Sulaiman Ali ⁷ ; Alahmadi, Tahani Awad ⁸ ; Rahman, Shafeeq Ur ¹⁰ ;

作者机构： 1.Chinese Acad Agr Sci, Farmland Irrigat Res Inst, Xinxiang 453002, Peoples R China

2.Sher e Kashmir Univ Agr Sci & Technol Kashmir, Div Soil Sci & Agr Chem, Wadura 193201, India

3.Sher e Kashmir Univ Agr Sci & Technol Kashmir, Fac Agr, Wadura 193201, India

4.Sher e kashmir Univ Agr Sci & Technol Kashmir, Div Food Sci & Technol, Shalimar 190025, India

5.Sher e Kashmir Univ Agr Sci & Technol Kashmir, Div Agron, Wadura, Wadura 193201, India

6.Sher e Kashmir Univ Agr Sci & Technol Kashmir, Div Agri Econ & Stat, Wadura 193201, India

7.King Saud Univ, Coll Sci, Dept Bot & Microbiol, Riyadh 11451, Saudi Arabia

8.King Saud Univ, Coll Med, Dept Pediat, Med City, POB 2925, Riyadh 11461, Saudi Arabia

9.King Khalid Univ Hosp, King Saud Univ, Med City, POB 2925, Riyadh 11461, Saudi Arabia

10.Shenzhen Univ, Coll Chem & Environm Engn, Water Sci & Environm Engn Res Ctr, Shenzhen 518060, Peoples R China

关键词： Waste biomaterials; Human hair; Fixed-bed column; Lead adsorption; Box-behnken design; RSM

期刊名称：HELIYON （ 影响因子：3.4； 五年影响因子：3.9 ）

ISSN：

年卷期： 2024 年 10 卷 15 期

页码：

收录情况： SCI

摘要： Heavy metal ions pose significant risks to human health, pelagic, and several other life forms due to perniciousness, tendency to accumulate, and resistance to biodegradation. Waste bio-materials extend a budding alternative as low-cost adsorbent to address the removal of noxious pollutants from wastewater on account of being cost-effective and exhibiting exceptional adsorption capacities. The current exploration was accomplished to gauge the performance of raw and modified human hair concerning lead scavenging in a down-flow fixed bed column. The appraisal of column performance under varying operational parameters encompassing bed height (15-45 cm), influent metal ion concentration (60-140 mg L- 1), and a solution flow rate (20-40 mL min- 1) was performed by breakthrough curve analysis. The consequences acquired were evaluated using the Yoon Nelson, Thomas, Adam-Bohart, and Bed Depth Service Time (BDST) model. Among these employed models, Bed Depth Service Time (BDST) and Thomas models exhibited the highest R-squared value compared to the Yoon Nelson and Adam-Bohart's model for most cases. In addition, the optimization of lead adsorption was followed using the Box-Behnken design of response surface methodology (RSM). The optimal conditions (desirability-1.00) for achieving a goal of maximum percent removal of lead ions were marked to be a bed height of 42.79 cm, solution flow rate of 20.92 mL min- 1, and an initial metal concentration of 139.51 mg L- 1. Under these optimized conditions, the percent amputation of lead in a fixed bed was observed to be 82.31 %, while the results of the experiment performed approximately under these optimized conditions revealed a percent removal of 85.05 %, reflecting a reasonable conformity with values acquired through Box-Behnken design.