Anaerobic digestate based on food waste is increasingly used as fertilizer in production. This study examined the characteristics of anaerobic from three biogas plants Sweden. The characterization included measurements heavy metals (n = 7), chemicals emerging concern (CECs), such currently drugs and pesticides 133), an extended range food-borne pathogens, including two notable sporeformers some widespread antibiotic-resistant bacteria. amounts Escherichia coli, enterococci, Salmonella...

The possible interaction of two stresses, UV-B radiation and cadmium, applied simultaneously, was investigated in Brassica napus L. cv. Paroll with respect to chlorophyll fluorescence, growth uptake selected elements. Plants were grown nutrient solution containing CdCl2, (0, 0.5, 2 or 5 μM) irradiated photosynthetically active (PAR, 400–700 nm, 800 μmol m−2 s−1) without supplemental ultraviolet-B (UV-B, 280–320 15 kJ d−1, weighted irradiance). After 14 d treatment, the most pronounced...

Abstract Soilless cultivation of vegetables with digestate fertilizer from biogas production as a nutrient source is promising method for integrating food and organic waste management. In this study, bok choy ( Brassica rapa var. chinensis ) was cultivated in hydroponic film technique system the only source. Nitrification moving bed biofilm reactors (external and/or integrated into system) employed to lower high ammonium concentration prior use. Treatments differing nitrification input...

Digestate from biogas production high in plant-available macro- and micro-nutrients could replace mineral fertilizer protected (soilless) horticulture. Previous uses of digestate have shown that low concentrations phosphorus (P) sulfur (S) may be limiting factors for growth when using as the sole fertilizer. In this study, collected a municipal plant Sweden was nitrified moving-bed biofilm reactor prior to its use A greenhouse pot trial with pak choi grown peat-based growing medium...

Binding of Cd to non-specific metal-binding peptides (phytochelatins) in birch roots has been suggested as an explanation for tolerance toxicity (Betula pendula). In the present study, was further investigated by using buthionine sulphoximine (BSO) inhibitor phytochelatin synthesis. Birch seedlings, grown nutrient solution at pH 4.2, were exposed 0 or 2 μM CdCl2 combined with 0.1 mM BSO 6 d. Plant growth (fresh weight increase and shoot root dry ratio) composition fine roots, whole shoots...

Abstract Cadmium (Cd) accumulation in wheat genotypes of spring bread ( Triticum aestivum L.) and durum turgidum var. durum) was studied field trials every third week throughout the growing season. The study carried out Sweden on three different soils during two seasons. results showed that genetic variation shoot grain Cd remained consistent, regardless soil type or In addition, it possible to select genotype accumulated most already at beginning season, since this also vegetative tissues...

Moving food production into the urban and peri-urban areas is one way of facilitating a closed-loop approach, integrating waste handling with in order to recirculate nutrients at same time reduce use mined fossil resources production. Using anaerobic digestion as converting wastes an energy source (methane) nutrient-rich biodigestate subsequent fertilizer for seems like feasible approach. However, utilizing plant systems implies some challenges, such high salinity waste, imbalanced...

Recovery and reuse of nutrients is a major challenge in agriculture. A new process contributing to circular economy the anaerobic digestion food waste, which sustainable way recycling as digestate can be used fertiliser agriculture horticulture. However, may polluted with contaminants emerging concern (CECs) that circulated back into chain, posing risk environment human health. In this work, nutrient solution was spiked 18 selected CECs frequently detected waste biogas facilities, subsequent...

The effects of AICI 3 on uptake Ca 2+ and phosphate in roots intact beech ( Fagus sylvatica L. provenance Maramures) plants were studied nutrient solution soil solution. Aluminium reduced the concentrations Ca, Mg P increased that K. In short term experiments, 45 Ca) was by exposure to Al. effect aluminium immediate primarily a competitive nature, preventing from being adsorbed. Uptake 32 P‐phosphate with increasing Al concentration up 0.1 m M then decreased at higher concentrations. most...

Anaerobic digestion of organic waste results in production biogas and a nutrient-rich digestate that has an established use as fertilizer plant production. This study evaluated anaerobic based on high concentration household sawdust-based oyster mushrooms (Pleurotus ostreatus). Inclusion 0.5 L (AD) per kg sawdust gave similar productivity terms biological efficiency (79.5 ± 5.4 %), protein (24.7 2.4 % dry weight (dw)) standard mushroom substrate (78.1 5.3 %, 21.9 3.0 dw, respectively)....

This study investigated the effects of pH and nitrogen form concentration on cadmium (Cd) uptake by potato (Solanum tuberosum L.) grown in hydroponic culture. Potato plants a pH-buffered nutrient solution for 10 d were exposed 24 h to 25 nM CdCl2 labelled with 109Cd. Plants showed significantly higher Cd accumulation at 6.5 than 4.5 5.5. Nitrogen supplied as nitrate (NO3 -) generally resulted N ammonium (NH4 +). effect was most pronounced 6.5. The increasing from 26 mM decreased influx when...

The effect of the microalgae Chlorella vulgaris on a wide range different pesticides in water was studied. Treatments included short-term exposure (1 h) to living and dead microalgal biomass long-term (4 days) actively growing microalgae. initial pesticide concentration 63.5 ± 3.9 µg L(-1). There no significant overall reduction after exposure. A total amount achieved (final 29.7 1.0 L(-1)) compared with control (37.0 1.2 L(-1)). concentrations 10 out 38 tested were significantly lowered...

The effluent from the biogas process was tested as a nutrient source during cultivation of protein-rich and edible microalgae Spirulina (Arthrospira platensis) compared with conventional medium. Equal biomass production observed until late exponential phase no significant differences could be between treatments in protein amount, amino acid composition, total lipid concentration. concentration pigment phycocyanin differed significantly medium effluent-based (63.3 ± 11.7 86.2 1.9 mg g−1,...

Abstract The effect of different levels and forms nitrogen (N) fertilizer on cadmium (Cd) concentrations in potato (Solanum tuberosum L.) tubers, a large component the northern European diet, was investigated with aim decreasing Cd content. A high low Cd-accumulating cultivar were used two field trials pot experiment. N fertilizers tested balanced N- phosphorus (P)- potassium (K) 11-5-18 + micronutrients, alkaline calcium nitrate acidic ammonium sulfate at 60, 160, 240 kg ha−1 planting or...

Removal of cadmium (Cd) present at low levels (1 µg L−1) in water was investigated using three different microorganism treatments: the microalga Chlorella vulgaris, fungus Aspergillus niger, and for first time biopellets composed C. vulgaris A. niger. After 5 days, all treatments resulted significantly lower Cd concentrations compared with control. Biopellets treatment pH values than other treatments, indicating that should be further their capacity, since is a factor affecting fate numerous...

In this study, the microbiological food safety of using anaerobic digestate as a fertilizer in hydroponic production vegetables was evaluated. The used liquid residue obtained from digestion waste biogas. Replacing customary inorganic with recycled (biofertilizer) could allow for sustainable urban close to retailers and consumers. However, striving circular production, it is vital that utilizing resources ensured. Especially application farming, where nutrient loop shorter than on arable...

Organic micropollutants (MPs) pose potential threats to environmental ecosystems and human health. This study investigated uptake of perfluoroalkyl substances (PFASs), pharmaceuticals, paraben by edible oyster mushrooms (Pleurotus ostreatus), cultivated on spiked growth substrate. Concentrations pharmaceuticals in substrate showed a decreasing trend over 20-day harvesting period, whereas PFAS concentrations were variable the period. However, only propylparaben, clarithromycin, PFASs detected...

The uptake of cadmium and lead by three lettuce (Lactuca sativa L.) cultivars was studied in water culture experiment. Different amounts (Cd) leaf (Pb) were added to the nutrient solution (0; 0.05 μM Cd; 0.5 Pb; Cd together with Pb). Fresh dry matter yield leaves roots significantly reduced presence Pb. higher or Pb concentration more accumulated plants. Most heavy metals located roots. combination had an additive effect on most investigated parameters. alone, almost all cases, did not...

In the present study we examine effects of Al on uptake Ca 2+ and H 2 PO ‐ 4 in beech (Fagus sylvatica L.) grown inorganic nutrient solutions supplied with natural fulvic acids (FA). All used were chemically well characterized. The by roots intact plants exposed to containing 0, 0.15 or 0.3 m M AlCl 3 for 24 h, was significantly less if FA (300 mg l −1 ) also solutions. ( 45 affected than without FA. There a strong negative correlation between (r =0.98). When plotted as function 3+ activity...

In greenhouse organic horticulture there is a great challenge in supplying the crop with adequate amounts of nutrients at right stage development. This has been identified as one main factors compromising yields systems compared conventional hydroponic based on use synthetic fertilisers. systems, supply reliant microbial degradation complexes, process that dependent such temperature, soil water content and pH. Different fertilisers will also have different characteristics respect to...