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阿拉比卡咖啡和可可豆农业工业废料生物吸附剂，用于去除水溶液中的 Pb(II)。

Arabica-coffee and teobroma-cocoa agro-industrial waste biosorbents, for Pb(II) removal in aqueous solutions.

机构信息

Escuela Profesional de Ingeniería Ambiental, Universidad Nacional Intercultural de la Selva Central Juan Santos Atahualpa, Av. Perú 612, Chanchamayo, Perú.

Facultad de Ingeniería de Sistemas, Universidad Nacional del Centro del Perú, Av. Mariscal Castilla No 3909, Huancayo, Perú.

出版信息

Environ Sci Pollut Res Int. 2023 Jan;30(2):2991-3001. doi: 10.1007/s11356-022-22233-3. Epub 2022 Aug 8.

DOI:10.1007/s11356-022-22233-3
PMID:35934741
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9892121/
Abstract

Agro-industrial waste biosorbents of arabica-coffee (WCA) and theobroma-cocoa (WCT) have been characterized and tested to remove Pb(II) from aqueous media. The maximum adsorption capacity of WCA and WCT (q = 158.7 and 123.5 mg·g, respectively) is comparable or even higher than for several other similar agro-industrial waste biosorbents reported in the literature. Structural and morphological characterization were performed by infrared spectrometry with Fourier transform (FT-IR), scanning electron microscopy/energy-dispersive X-ray spectroscopy (SEM/EDS), and charge measurements at the zero point charge (pH). Both biosorbents, WCA and WCT, show cracked surfaces with heterogeneous plates which ones include functional adsorption groups such as OH, C = O and C-O-C. Optimal Pb(II) adsorption occurs for a pH between 4 and 5 at [WCA] and [WCT] dose concentrations of 2 g·L. We found that the adsorption process follows pseudo-second order kinetics with a rapid growth rate (almost six times larger for WCA than for WCT), basically controlled by the chemisorption process. The regeneration of both biosorbents was carried out in an eluent of 0.1M HNO and they can be efficiently reused up to 5 times.

摘要

已对阿拉比卡咖啡（WCA）和可可（WCT）的农业工业废物生物吸附剂进行了表征和测试，以去除水溶液中的 Pb(II)。WCA 和 WCT 的最大吸附容量（q = 158.7 和 123.5 mg·g，分别）与文献中报道的几种其他类似农业工业废物生物吸附剂相当，甚至更高。结构和形态特征通过傅里叶变换红外光谱（FT-IR）、扫描电子显微镜/能量色散 X 射线光谱（SEM/EDS）和零电荷点（pH）处的电荷测量来进行。两种生物吸附剂 WCA 和 WCT 均显示出具有异质板的破裂表面，其中包括 OH、C = O 和 C-O-C 等功能吸附基团。在 [WCA] 和 [WCT] 剂量浓度为 2 g·L 时，最佳的 Pb(II)吸附发生在 pH 值在 4 到 5 之间。我们发现吸附过程遵循伪二级动力学，且增长率很快（WCA 比 WCT 快近六倍），基本由化学吸附过程控制。两种生物吸附剂的再生均在 0.1M HNO 洗脱液中进行，它们可以有效地重复使用多达 5 次。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7975/9892121/5c960c13d55c/11356_2022_22233_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7975/9892121/541e545055f5/11356_2022_22233_Fig1_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7975/9892121/d7c2d927bd54/11356_2022_22233_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7975/9892121/0b4dac4ccfbf/11356_2022_22233_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7975/9892121/3fb6ea6109eb/11356_2022_22233_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7975/9892121/cf8e8648d783/11356_2022_22233_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7975/9892121/a7f25a171545/11356_2022_22233_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7975/9892121/8094fcca328e/11356_2022_22233_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7975/9892121/5c960c13d55c/11356_2022_22233_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7975/9892121/541e545055f5/11356_2022_22233_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7975/9892121/aa0148066fd5/11356_2022_22233_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7975/9892121/ce7b23ceb056/11356_2022_22233_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7975/9892121/d7c2d927bd54/11356_2022_22233_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7975/9892121/0b4dac4ccfbf/11356_2022_22233_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7975/9892121/3fb6ea6109eb/11356_2022_22233_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7975/9892121/cf8e8648d783/11356_2022_22233_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7975/9892121/a7f25a171545/11356_2022_22233_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7975/9892121/8094fcca328e/11356_2022_22233_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7975/9892121/5c960c13d55c/11356_2022_22233_Fig10_HTML.jpg

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