Melioracijski učinci biopepela sa dna ložišta u Cd kontaminiranom tlu

master's thesis

• Title (english): Amelioration effects of bottom bioash in Cd contaminated soil
• Author: Ena Matošević
• Mentor: Gabrijel Ondrašek (mentor)
• Committee member: Gabrijel Ondrašek (predsjednik povjerenstva)
• Committee member: Marina Bubalo Kovačić (član povjerenstva)
• Committee member: Stjepan Husnjak (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Department of Soil Amelioration); Zagreb
• Defense date and country: 2022-09-27, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Globalno promicanje korištenja obnovljivih izvora energije u zadnjem desetljeću dovelo je do povećanja količine nusproizvoda – biopepela, koji treba biti pravilno skladišten ili iskorišten. Industrijalizacija, urbanizacija i poljodjelstvo doveli su do anorganske kontaminacije tla među kojima svoje mjesto zauzimaju i teški metali koji se lako adsorbiraju i ulaze u prehrambeni lanac, uzrokujući razne zdravstvene probleme. Metode remedijacije kontaminiranih tala metalima najčešće su vremenski duge i financijski zahtjevne zbog čega se pronalaze alternativna rješenja. Biopepeo je fizikalno-kemijski složen i alkalan (pH>12) što mu omogućuje da bitno izmijeni kemizam teških metala u tlu. Stoga je cilj rada bio istražiti kako će dodatak dvije različite doze (1% i 4% m/m) biopepela sa dna ložišta (porijeklom iz kogeneracijskog postrojenja na biomasu Viridas biomass, Babina Greda) u Cd kontaminiranom tlu utjecati na kemizam Cd te vegetacijske parametre i mineralni sastav industrijske konoplje (Cannabis sativa L., varijetet Henola). Istraživanje je provedeno u kontroliranim uvjetima plastenika na Agronomskom fakultetu Sveučilišta u Zagrebu. Provedenim istraživanjem utvrđeno je da je dodatak biopepela s dna ložišta pozitivno utjecao na niz vegetacijskih parametara test kulture; visina stabljike je uslijed tretmana sa biopepelom povećana za 21%; broj listova je povećan za 10%, masa biljke u suhom stanju je povećana za 35%, a u svježem stanju za 61% u odnosu na kontrolu. Također, u istim relacija s dodatkom biopepela povećana je pH reakcija kontaminiranog tla za 0,4 jedinice (sa 6,5 na 6,9) u odnosu na kontrolno tlo. Dodatak biopela je negativno utjecao na usvajanje i koncentraciju Cd i većine ostalih analiziranih metala u analiziranim organima test kulture, izuzev Cu. Temeljem navedenog, može se zaključiti kako aplikacija analiziranog biopepela sa dna ložišta predstavlja obećavajući materijal za melioracije kontaminiranih tala metalima.

Abstract (english)

The global promotion of the use of renewables in the last decade has led to an increase in the amount of by-products – bioash, which need to be properly stored or reused. Industrialization, urbanization and agriculture have led to inorganic soil contamination, among which heavy metals are especially important as metals are relatively easily adsorbed by crops, entering the food chain and causing various health problems. Methods of remediation of metal-contaminated soils are usually time-consuming and financially demanding. Bioash is physico-chemically complex and alkaline (pH>12), which enables it to significantly change the chemistry of heavy metals in the soil. Therefore, the aim of the work was to investigate how the addition of two different doses (1% and 4% m/m) of bottom bioash (from the biomass cogeneration plant Viridas biomass, Babina Greda) in Cd-contaminated soil will affect Cd chemistry, vegetation parameters and mineral composition of industrial hemp (Cannabis sativa L., Henola variety). The research was conducted in controlled greenhouse conditions at the Faculty of Agriculture, University of Zagreb. The study confirmed that the addition of bioash had a positive effect on numerous vegetation parameters of the test culture; stem height was increased by 21%; the number of leaves increased by 10%, the dry biomass of test crop was increased by 35%, and the fresh biomass by 61% compared to the control. Also, in the same relationship with the addition of bioash, the pH reaction of metal-contaminated soil increased by 0.4 units (from 6.5 to 6.9) compared to the control soil. The addition of bioash had a negative effect on the uptake and concentration of Cd and most of the other analyzed metals in the analyzed organs of the test culture, with the exception of Cu. Accordingly, it can be concluded that the application of analyzed bottom bioash represents a promising material for reclamation of soils contaminated with metals.

• Keywords: kontaminacija tla; biopepeo; industrijska konoplja; fotoakumulacija
• Keywords (english): soil contamination; bioash; industrial hemp; photoaccumulation
• Language: croatian
• URN:NBN: urn:nbn:hr:204:261106
• Study programme: Title: Agricultural Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka poljoprivredne tehnike (magistar/ magistra inženjer/inženjerka poljoprivredne tehnike)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to authenticated users
• Created on: 2022-11-24 12:10:33