{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,16]],"date-time":"2025-10-16T20:41:53Z","timestamp":1760647313038,"version":"build-2065373602"},"reference-count":37,"publisher":"MDPI AG","issue":"16","license":[{"start":{"date-parts":[[2020,8,14]],"date-time":"2020-08-14T00:00:00Z","timestamp":1597363200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["UIDB\/04033\/2020"],"award-info":[{"award-number":["UIDB\/04033\/2020"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100014193","name":"Instituto Polit\u00e9cnico de Viseu","doi-asserted-by":"publisher","award":["WASTECLEAN PROJ\/IPV\/ID&I\/019"],"award-info":[{"award-number":["WASTECLEAN PROJ\/IPV\/ID&I\/019"]}],"id":[{"id":"10.13039\/501100014193","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Portugal 2020","award":["WASTE2VALUE PDR2020-1.0.1-FEADER-032314"],"award-info":[{"award-number":["WASTE2VALUE PDR2020-1.0.1-FEADER-032314"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Applied Sciences"],"abstract":"<jats:p>The storage of animal manure is a major source of gaseous emissions. The aim of this study was to evaluate the effects of biochar and clinoptilolite on the composition and gaseous emissions during the storage of separated liquid fraction of pig slurry. The experiment was carried out using containers with 6 L of pig slurry each. The additives biochar and clinoptilolite were added alone and mixed to the pig slurry at a rate of 2.5% each, in a total of four treatments with three replicates including the control. Gaseous emissions were monitored by a photoacoustic multigas monitor, and slurry samples were collected at 0 and 85 days and their composition assessed. Results showed that the addition of biochar could modify the physicochemical properties of the slurry. The addition of biochar did not reduce the E. coli during the experiment while clinoptilolite decreased its prevalence. The addition of biochar or clinoptilolite reduced significantly the NH3 emission during the storage of slurry, but no advantages were gained with their combination. The addition of biochar significantly reduced the CO2 and CH4 emissions relative to clinoptilolite, however N2O emissions and global warming potential did not differ among the additives. We conclude that the biochar and clinoptilolite are recommended as a mitigation measure to reduce gaseous emissions and preserve the fertiliser value at slurry storage.<\/jats:p>","DOI":"10.3390\/app10165652","type":"journal-article","created":{"date-parts":[[2020,8,14]],"date-time":"2020-08-14T08:28:35Z","timestamp":1597393715000},"page":"5652","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Effects of Biochar and Clinoptilolite on Composition and Gaseous Emissions during the Storage of Separated Liquid Fraction of Pig Slurry"],"prefix":"10.3390","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8078-8915","authenticated-orcid":false,"given":"Jos\u00e9 L. S.","family":"Pereira","sequence":"first","affiliation":[{"name":"Agrarian School of Viseu, Polytechnic Institute of Viseu, Quinta da Alagoa, 3500-606 Viseu, Portugal"},{"name":"Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Tr\u00e1s-os-Montes and Alto Douro, Quinta de Prados, 5000-801 Vila Real, Portugal"}]},{"given":"Vitor","family":"Figueiredo","sequence":"additional","affiliation":[{"name":"Agrarian School of Viseu, Polytechnic Institute of Viseu, Quinta da Alagoa, 3500-606 Viseu, Portugal"}]},{"given":"Ant\u00f3nio F. M. A.","family":"Pinto","sequence":"additional","affiliation":[{"name":"Agrarian School of Viseu, Polytechnic Institute of Viseu, Quinta da Alagoa, 3500-606 Viseu, Portugal"},{"name":"Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Tr\u00e1s-os-Montes and Alto Douro, Quinta de Prados, 5000-801 Vila Real, Portugal"}]},{"given":"Maria E. F.","family":"Silva","sequence":"additional","affiliation":[{"name":"Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Tr\u00e1s-os-Montes and Alto Douro, Quinta de Prados, 5000-801 Vila Real, Portugal"},{"name":"School of Technology and Management of Viseu, Polytechnic Institute of Viseu, Campus Polit\u00e9cnico de Repeses, 3504-510 Viseu, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2252-381X","authenticated-orcid":false,"given":"Isabel","family":"Br\u00e1s","sequence":"additional","affiliation":[{"name":"Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Tr\u00e1s-os-Montes and Alto Douro, Quinta de Prados, 5000-801 Vila Real, Portugal"},{"name":"School of Technology and Management of Viseu, Polytechnic Institute of Viseu, Campus Polit\u00e9cnico de Repeses, 3504-510 Viseu, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6080-7760","authenticated-orcid":false,"given":"Adelaide","family":"Perdig\u00e3o","sequence":"additional","affiliation":[{"name":"Agrarian School of Viseu, Polytechnic Institute of Viseu, Quinta da Alagoa, 3500-606 Viseu, Portugal"},{"name":"Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Tr\u00e1s-os-Montes and Alto Douro, Quinta de Prados, 5000-801 Vila Real, Portugal"}]},{"given":"Dulcineia F.","family":"Wessel","sequence":"additional","affiliation":[{"name":"Agrarian School of Viseu, Polytechnic Institute of Viseu, Quinta da Alagoa, 3500-606 Viseu, Portugal"},{"name":"Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Tr\u00e1s-os-Montes and Alto Douro, Quinta de Prados, 5000-801 Vila Real, Portugal"},{"name":"QOPNA &amp; LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2020,8,14]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Sommer, S.G., Christensen, M.L., Schmidt, T., and Jensen, L.S. 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