Synthesis of bio-based materials from agricultural residues for treatment of petrochemical wastewater

Nasir, Mohammad (author), Kumar, Praveen (author), Srivastava, Vimal Chandra (author), Verma, Shilpi (author), Kaur, Ramanpreet (author), Mall, Indra Deo (author), Lavrenčič Štangar, Urška (author)

4-Carboxybenzaldehyde (4-CBA), a major component of purified terephthalic acid wastewater, is toxic to living organisms and required to be removed before the discharge of treated wastewater in a natural water body. In this work, the adsorptive removal of 4-CBA was studied using bagasse fly ash (BFA), a waste product from the sugar industry. The adsorption capacity of BFA was compared with the commercially available adsorbent, granular activated carbon (GAC). A 4-factorial, 5-stage central composite design (CCD) was used to optimize 4-CBA removal and adsorption uptake by BFA using response surface methodology (RSM). The variables considered for the study were pH, adsorbent dose (m), initial concentration (C$_o$) and time (t). At the optimum treatment conditions of pH = 4, m = 9 g/L, C$_o$ = 100 mg/L and t = 7.5 h, the removal efficiency and adsorption uptake of 4-CBA on BFA were found to be 79% and 9.9 mg/g, respectively. BET surface area of BFA was determined to be 284 m$^2$/g. A kinetic study was performed using a first- and second pseudo-order model. The adsorption equilibrium data were fitted for various adsorption models. A positive value ΔH$^0$ indicates that the adsorption process is endothermic. This study indicated that BFA is a cost-effective adsorbent for the removal of 4-CBA with high adsorption capacity and fast kinetics.

• Language: English
• Keywords: 4-carboxybenzaldehyde, central composite design, bagasse fly ash, adsorption
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FKKT - Faculty of Chemistry and Chemical Technology
• Publication status: Published
• Publication version: Version of Record
• Year: 2023
• Number of pages: Str. 2287–2303
• Numbering: Vol. 25, iss. 7
• PID: 20.500.12556/RUL-146117
• UDC: 620.1:628.3
• ISSN on article: 1618-954X
• DOI: 10.1007/s10098-023-02504-4
• COBISS.SI-ID: 148651779
• Publication date in RUL: 19.05.2023

Record is a part of a journal

• Title: Clean technologies and environmental policy
• Shortened title: Clean technol. environ. policy
• Publisher: Springer Nature
• ISSN: 1618-954X
• COBISS.SI-ID: 8377878

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Keywords: 4-karboksibenzaldehid, centralna kompozitna zasnova, adsorpcija, materiali, odpadne vode