Innovative Recovery of Winemaking Waste for Effective Lead Removal from Wastewater

Every year, important quantities of winemaking waste create problems for wine producers. These problems arise from the difficulty of disposing of grape marc, which can pollute the environment and affect nearby agricultural crops. The present research proposes a new direction for the valorization of...

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Bibliographic Details
Published in:Agronomy (Basel) 2022-03, Vol.12 (3), p.604
Main Authors: Ungureanu, Gabriela, Patras, Antoanela, Cara, Irina Gabriela, Sturza, Rodica, Ghendov-Mosanu, Aliona
Format: Article
Language:English
Subjects:
Activated carbon
Adsorbents
Adsorption
agri-food industrial wastes
Agribusiness
Agricultural production
Antimicrobial agents
Biomass
Biomaterials
Biomedical materials
Bioremediation
Dietary supplements
Food
Food waste
Fourier transforms
Fruits
Functional foods & nutraceuticals
grape marc
Grapes
heavy metals
Industrial wastes
R&D
Refining
Research & development
Sorbents
Wastewater
Wastewater treatment
Water pollution
water treatment
Wines
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Summary:Every year, important quantities of winemaking waste create problems for wine producers. These problems arise from the difficulty of disposing of grape marc, which can pollute the environment and affect nearby agricultural crops. The present research proposes a new direction for the valorization of this agri-food waste in residual water depollution. Four biomaterials obtained from winemaking waste were tested for Pb removal: raw Merlot grape marc (MR), raw Sauvignon Blanc grape marc (SbR), Merlot grape marc biorefined (ME) and Sauvignon Blanc grape marc biorefined (SbE). The effects of biosorbent mass and initial Pb concentration, adsorption kinetic, equilibrium isotherms and the matrix influence from a mine effluent were assessed. Very good perspectives for the practical application in lead uptake from wastewaters arise, with better results for biorefined grape marc compared to raw material. The lead removal percentage from an initial solution containing 20 mg Pb/L, at optimum pH (5.5 ± 0.5) was 71%—MR, 78%—SbR, 80%—ME, and 97%—SbE. A Langmuir model revealed a very good removal capacity for ME (40 mg/g) and SbE (64 mg/g). Thus, the grape marc, a polluting waste, can turn into a low-cost and easy-to-prepare sorbent for the bioremediation of contaminated water.
ISSN:2073-4395
2073-4395
DOI:10.3390/agronomy12030604