Arsenic removal from aqueous solutions and groundwater using agricultural biowastes-derived biosorbents and biochar: a column-scale investigation

Autor:	Yongqing Zhang, Imtyaz Hussain, Muhammad Imran, Sana Khalid, Nabeel Khan Niazi, Muhammad Shahid, Hafiz Faiq Bakhat, Riaz Ahmad Tabassum, Camille Dumat
Rok vydání:	2019
Předmět:	0106 biological sciences endocrine system genetic structures Environmental remediation Groundwater remediation chemistry.chemical_element Plant Science 010501 environmental sciences 01 natural sciences Arsenic Water Purification Biochar Environmental Chemistry Charcoal Groundwater 0105 earth and related environmental sciences Banana peel Pulp and paper industry Pollution eye diseases body regions Phytoremediation Biodegradation Environmental chemistry visual_art visual_art.visual_art_medium Environmental science Adsorption sense organs Water Pollutants Chemical 010606 plant biology & botany
Zdroj:	International Journal of Phytoremediation. 21:509-518
ISSN:	1549-7879 1522-6514
DOI:	10.1080/15226514.2018.1501340
Popis:	In this study, column-scale laboratory experiments were performed to evaluate the arsenic (As) removal efficiency of different agricultural biowastes-derived biosorbents (orange peel, banana peel, rice husk) and biochar, using As-containing solutions and As-contaminated groundwater. All the biosorbents and biochar efficiently removed (50-100%) As from groundwater (drinking well water). Arsenic removal potential of biosorbents varied with their type, As concentration, contact time, and As solution type. After 1 h, the As removal efficiency of all the biosorbents was 100%, 100% and 90% for 5, 10, and 50 µg/L As-contaminated groundwater samples, respectively; and it was 50%, 90%, and 90% for 10, 50, and 100 µg/L As solutions, respectively. After 2 h, all the biosorbents and biochar removed 100% As from aqueous solutions except for 100 µg/L As solution. This showed that the biosorbents and biochar could be used to reduce As contents below the WHO safe limit of As in drinking water (10 µg/L). Fourier transform infrared (FTIR) spectroscopy indicated possible role of various surface functional moieties on biosorbents/biochar surface to remove As from solution and groundwater. This pilot-scale column study highlights that the biosorbents and biochar can be effectively used in remediation of As-contaminated groundwater, although the soluble salts in groundwater increased after treatment with biochar.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1af94b5bb1ddefa7a3d76cd3378c926a https://doi.org/10.1080/15226514.2018.1501340 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
Nepřihlášeným uživatelům se plný text nezobrazuje	K zobrazení výsledku je třeba se přihlásit.