Insights into the environmental benefits of using apple pomace for biosorption of lead from contaminated water

被引:0
|
作者
Ungureanu, Gabriela [1 ]
Enache, Iuliana-Maria [1 ]
Cara, Irina Gabriela [2 ]
Motrescu, Iuliana [1 ,2 ]
Patras, Antoanela [1 ]
机构
[1] Ion Ionescu de la Brad Iasi Univ Life Sci, Fac Hort, 3 Mihail Sadoveanu Alley, Iasi 700490, Romania
[2] Ion Ionescu de la Brad Iasi Univ Life Sci, Res Inst Agr & Environm, 9 Mihail Sadoveanu Alley, Iasi 700789, Romania
关键词
Apple juice; Food waste; Lead removal; Biosorption; Low-cost adsorbents; INDUSTRY WASTE; HEAVY-METALS; GRAPE MARC; REMOVAL; ADSORPTION;
D O I
10.1016/j.heliyon.2024.e36811
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The apple processing industry generates large quantities of organic waste, presenting a major source of organic contamination. Consequently, finding an effective solution for valorizing this waste has become a pressing issue. This study aims to address two key concerns: (i) solving an agricultural problem by efficiently using agri-food residue, and (ii) removing lead, an extremely toxic element, from contaminated waters to mitigate environmental pollution. Two biosorbents were tested: raw apple waste (RA), obtained from a mixture of apple varieties, and the same material after extracting valuable bioactive and reusable components, extracted apple (EA). The study evaluated the influence of pH, initial biosorbent mass, adsorption kinetics, and equilibrium isotherms. The results are very promising, showing a lead removal efficiency of 82 % for RA and 100 % for EA at a low initial concentration of the solution of 20 mg Pb2+/L and an optimal pH of 5 +/- 0.5. The Langmuir model predicted a maximum adsorption capacity of 44.6 mg/g for RA and 48.6 mg/g for EA. These findings demonstrate that apple waste, even after selective extraction of valuable bioactive components, can be effectively used for environmental remediation on a practical scale.
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页数:13
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