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废报纸驱动活性炭去除废水中的多环芳烃。

Waste newspaper driven activated carbon to remove polycyclic aromatic hydrocarbon from wastewater.

作者信息

Nahar Aynun, Akbor Md Ahedul, Pinky Nigar Sultana, Chowdhury Nushrat Jahan, Ahmed Shamim, Gafur Md Abdul, Akhtar Umme Sarmeen, Quddus Md Saiful, Chowdhury Fariha

机构信息

Institute of National Analytical Research and Services (INARS), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh.

Institute of Glass and Ceramic Research and Testing (IGCRT), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh.

出版信息

Heliyon. 2023 Jun 29;9(7):e17793. doi: 10.1016/j.heliyon.2023.e17793. eCollection 2023 Jul.

DOI:10.1016/j.heliyon.2023.e17793
PMID:37449116
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10336527/
Abstract

In this study, a carbon-based adsorbent was developed from waste newspaper through pyrolysis at 800 °C to evaluate the removal efficiency of polycyclic aromatic hydrocarbons (Benzo[ghi]perylene (BghiP) and Indeno [1,2,3-cd] pyrene (IP)) from wastewater. The surface area of the developed adsorbent was estimated at 509.247mg which allowed the adsorption of the PAHs from wastewater. The maximum adsorption capacity was estimated at 138.436 μg g and 228.705 μg g for BghiP and IP, respectively and the highest removal efficiency was observed at pH 2. Around 91% removal efficiency was observed at pH 7 for both pollutants. Experimental adsorption data were fit for pseudo-second-order kinetics and Langmuir isotherm models, which demonstrate electrostatic interaction, monolayered deposition, hydrogen bonding, and π-π interaction between adsorbate and adsorbent which play a significant role in adsorption. The regeneration study described that the developed adsorbent could be able to intake 52.75% BghiP and 48.073% IP until the 8th and 6th cycles, respectively. The removal efficiency of the adsorbent in the real sample was also evaluated. This study will provide a method to convert waste material into adsorbent and will remove PAHs from wastewater as a function of pollutant mitigation and waste management.

摘要

在本研究中，通过在800°C下热解由废报纸制备了一种碳基吸附剂，以评估其对废水中多环芳烃（苯并[ghi]苝（BghiP）和茚并[1,2,3-cd]芘（IP））的去除效率。所制备吸附剂的表面积估计为509.247mg，这使得其能够从废水中吸附多环芳烃。BghiP和IP的最大吸附容量分别估计为138.436μg g和228.705μg g，在pH为2时观察到最高去除效率。对于两种污染物，在pH为7时观察到约91%的去除效率。实验吸附数据符合伪二级动力学和朗缪尔等温线模型，这表明吸附质与吸附剂之间的静电相互作用、单层沉积、氢键和π-π相互作用在吸附过程中起重要作用。再生研究表明，所制备的吸附剂在第8个和第6个循环之前分别能够吸附52.75%的BghiP和48.073%的IP。还评估了吸附剂在实际样品中的去除效率。本研究将提供一种将废料转化为吸附剂的方法，并将作为污染物减排和废物管理的一项功能从废水中去除多环芳烃。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9a0b/10336527/4e8d4d8d4584/gr7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9a0b/10336527/5de2428b6278/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9a0b/10336527/c5531cf81eb3/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9a0b/10336527/b5abe7ee7c4d/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9a0b/10336527/be7af23723e2/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9a0b/10336527/73b08440cd60/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9a0b/10336527/ce916950abd4/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9a0b/10336527/4e8d4d8d4584/gr7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9a0b/10336527/5de2428b6278/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9a0b/10336527/c5531cf81eb3/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9a0b/10336527/b5abe7ee7c4d/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9a0b/10336527/be7af23723e2/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9a0b/10336527/73b08440cd60/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9a0b/10336527/ce916950abd4/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9a0b/10336527/4e8d4d8d4584/gr7.jpg

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