Optimization of tomato waste composting with integration of organic feedstock

Author(s):  
Ilyass TABRIKA ◽  
El Hassan Mayad ◽  
James N. Furze ◽  
Mina Zaafrani ◽  
Khalid Azim
Keyword(s):  
Agronomy ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 360
Author(s):  
José L. S. Pereira ◽  
Adelaide Perdigão ◽  
Francisco Marques ◽  
Catarina Coelho ◽  
Mariana Mota ◽  
...  

Biofilters are an effective air pollution control technology to break down gaseous contaminants and produce innocuous end products. This laboratory study aimed to evaluate a biofilter media, mainly composed by tomato waste, as packing material to reduce NH3, N2O, CO2 and CH4 losses from stored pig slurry. Three mixtures of packing materials, with and without oxalic acid, were arranged in treatments, namely: mixture of tomato waste, pine bark and agricultural compost; mixture of tomato waste and rice husk; tomato waste only. A control treatment (no biofilter) was also included. The experiments were conducted using a system of laboratory scale biofilters connected to jars filled with pig slurry and under a constant airflow rate. The gas concentrations were measured for 14 days and the physicochemical of the packing materials were assessed. Results showed that biofilter media mixtures had a potential for NH3 retention ranging from 51 to 77% and the addition of oxalic acid to these biofilters increased NH3 retention to 72–79%. Additionally, the biofilter media mixtures with and without oxalic acid showed a potential retention for CH4 (29–69%) but not for N2O, yet with no impact on the global warming potential. It can be concluded that tomato based biofilters had the potential to reduce gaseous emissions from slurry.


2016 ◽  
Vol 15 (12) ◽  
pp. 493-496 ◽  
Author(s):  
Maria E. Mahata ◽  
Yose Rizal ◽  
Ardi . ◽  
Dedek Hermansyah ◽  
Gina A. Nurhuda

Author(s):  
Nurgül Özbay ◽  
Adife Ş. Yargıç ◽  
Rahmiye Z. Yarbay Şahin ◽  
Elif Yaman

Author(s):  
Pranav G. Nair ◽  
Emmanuel Joseph ◽  
Naresh Killi ◽  
Sravanya Konchada ◽  
Anuya Nisal ◽  
...  
Keyword(s):  
One Pot ◽  

2015 ◽  
Vol 88 ◽  
pp. 152-159 ◽  
Author(s):  
A.Ş. Yargıç ◽  
R.Z. Yarbay Şahin ◽  
N. Özbay ◽  
E. Önal

2015 ◽  
Vol 172 ◽  
pp. 225-232 ◽  
Author(s):  
Sladjana Stajčić ◽  
Gordana Ćetković ◽  
Jasna Čanadanović-Brunet ◽  
Sonja Djilas ◽  
Anamarija Mandić ◽  
...  
Keyword(s):  

2012 ◽  
Vol 77 (10) ◽  
pp. 1381-1389 ◽  
Author(s):  
Sladjana Savatovic ◽  
Gordana Cetkovic ◽  
Jasna Canadanovic-Brunet ◽  
Sonja Djilas

The kinetic behaviour of tomato waste extracts (obtained from six genotypes) and standard antioxidant compounds (ascorbic and caffeic acid) were investigated using 2,2-diphenyl-1-picrylhydrazyl radical test. Based on the time needed for the reaction to reach steady state, the investigated extracts show very slow (steady state ? 180 min) antiradical behaviour, ascorbic acid act as rapid antioxidant (steady state < 5min) while caffeic acid is rapidintermediate antioxidant (5 min < steady state < 20 min). The efficient concentrations at different kinetic times EC50,t were determined for all extracts, ascorbic and caffeic acid. EC50,t was used as a parameter to screen and compare antiradical activities of food extracts with slow kinetic action. Irrespective of the time considered, the comparison of the EC50,t for extracts showed that the DPPH radicals scavenging activity of extracts decreased in the order of O2 > Knjaz > Backa > Saint Pierre > Rutgers > Novosadski niski. Tomato waste extracts showed very slow kinetic action, which is probably result of the different kinetic bevaviour of phenolic compounds, present in tomato waste, as well as other antioxidants (vitamins, carotenoids etc).


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