Comparative Genotoxicity Analysis of Heavy Metal Contamination in Higher Plants

BACKGROUND: In the circular economy context, the present article proposes a green technical solution by manganese ions adsorption on oak wood ash and the reuse of the new waste generated by the adsorption process as soil amendment. RESULTS:The influence of the main process variables: pH, adsorbent dose and contact time was investigated for optimal manganese ions adsorption. The highest adsorption efficiency of the wood ash (more than 98%) was recorded at pH 6, adsorbent dose of 10 g L −1 and contact time 15 min. The ion adsorption process is best described by Langmuir isotherm and pseudo second-order kinetic model. Maximum adsorption capacity, 54.94 mg g −1 , is better than other adsorbent materials previously used for manganese adsorption. The exhausted wood ash, resulted after the manganese adsorption was used as soil amendment for barley crop, Hordeum vulgare L. The beneficial effect upon the studied plants was highlighted using the specific parameters: germination percent (up to 10% higher), plant average length (higher by 14-35%), biomass (up to 200%) and relative growth rate (higher by 6-12%) compared to those obtained for the control sample.CONCLUSION: These results show that all the wastes involved have been used successfully and support the proposed ecofriendly technical solution for some industrial wastes management.

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“…Hordeum vulgare L. was used to establish the exhausted wood ash effect as soil amendment. This plant is a well known bioindicator …”

Section: Resultsmentioning

confidence: 99%

A green approach for treatment of wastewater with manganese using wood ash

Moșoarcă

Vancea

Popa

et al. 2020

J of Chemical Tech & Biotech

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“…За участю останніх здійснюється пошкодження основних біополімерів у клітині (перекисне окиснення ліпідів, білків і нуклеїнових кислот) [6,11,30]. Метали зі сталою валентністю сприяють утворенню вільних радикалів опосередковано через пригнічення активності антиоксидантних ферментів, таких як супероксиддисмутаза, каталаза, аскорбат пероксидаза, глютатіонредуктаза, дегідроаскорбатредуктаза тощо [14,30].…”

Section: вступunclassified

Environmental contamination by toxic metals and its indication by plant test systems

Dovgalyuk

2013

Biol. Stud.

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“…In soils contaminated with petroleum and derivatives, some contaminants stand out compared to others, such as benzene, toluene, ethylbenzene and xylenes, known as BTEX, polycyclic aromatic hydrocarbons (PAH) and total petroleum hydrocarbons (TPH) [6,7]. Pollution by heavy metals is derived from the anthropogenic activity, mainly associated to the industrial process and natural sources, such as volcanic eruptions [8].…”

Section: Introductionmentioning

confidence: 99%