Cauliflower waste utilization for sustainable biobutanol production: revelation of drying kinetics and bioprocess development

Abstract

Efficient yet economic production of biofuel(s) using varied second-generation feedstock needs to be explored in the current scenario to cope up with global fuel demand. Hence, the present study was performed to reveal the use of cauliflower waste for acetone-butanol-ethanol (ABE) production using Clostridium acetobutylicum NRRL B 527. The proximate analysis of cauliflower waste demonstrated to comprise 17.32% cellulose, 9.12% hemicellulose, and 5.94% lignin. Drying of cauliflower waste was carried out in the temperature range of 60-120 °C to investigate its effect on ABE production. The experimental drying data were simulated using moisture diffusion control model. The cauliflower waste dried at 80 °C showed maximum total sugar yield of 26.05 g L. Furthermore, the removal of phenolics, acetic acid, and total furans was found to be 90-97, 10-40, and 95-97%, respectively. Incidentally, maximum ABE titer obtained was 5.35 g L with 50% sugar utilization.

The Effect of Foliar Putrescine Application, Ammonium Exposure, and Heat Stress on Antioxidant Compounds in Cauliflower Waste

“…Although other authors have reported the possibility of using cauliflower residues from various points of view [ 14 , 15 ], this is the first work where their beneficial properties have been studied in order to be improved with regard to the pharmaceutical, cosmetics, and food industries. It is known that thermal stress is accompanied by an increase in the concentration of reactive oxygen species [ 4 ].…”

“…Some previous works have attributed such high antioxidant activity not only to phenolic compounds, but also to substances such as soluble fiber, glucosinolates, and their derived products, such as isothiocyanates, that are present in cauliflower waste and have potent anticancer effects [15]. Although other authors have reported the possibility of using cauliflower residues from various points of view [14,15], this is the first work where their beneficial properties have been studied in order to be improved with regard to the pharmaceutical, cosmetics, and food industries. It is known that thermal stress is accompanied by an increase in the concentration of reactive oxygen species [4].…”

“…This waste is a major problem, as it causes significant environmental effects. Therefore, in recent years, sustainable ways to reuse cauliflower waste have been studied [ 14 , 15 ].…”

Valorization of Agri-Food Wastes as Sustainable Eco-Materials for Wastewater Treatment: Current State and New Perspectives

“…Great amounts of cabbage wastes are dumped directly on the ground, leading to a serious threat to the environment. Moreover, their incineration plays a significant part in the increase of CO 2 levels [ 127 ]. Besides, bioethanol production, powder waste obtained from cauliflower was used from heavy metals removals such as Pb(II) and Cd(II) from synthetic solutions—the process is described with Langmuir and pseudo-second kinetic models [ 118 ].…”

Green synthesis of silver nanoparticles using cauliflower waste and their multifaceted applications in photocatalytic degradation of methylene blue dye and Hg2+ biosensing

“…Biowaste, in the form of vegetable or fruit waste, has become a major environmental concern due to its improper disposal. Among vegetables, India ranks second worldwide in cauliflower production, accounting for approximately 35% of total worldwide production [33]. Cauliflower (Brassica oleracea var.…”