{"corpus_id":104553552,"paper_sha":"e95aa0e76890a54aa04e5ec13c1f755fe2108d5a","doi":"10.1016/J.BIOMBIOE.2018.10.002","arxiv_id":null,"pmid":null,"pmcid":null,"mag_id":2897991685,"dblp_id":null,"acl_id":null,"title":"Hydraulic and organic rates applied to pilot scale UASB reactor for sugar cane vinasse degradation and biogas generation","year":2018,"publication_date":"2018-12-01","venue":"Biomass & Bioenergy","journal":{"name":"Biomass and Bioenergy","pages":null,"volume":null},"journal_issn":null,"journal_title":null,"publication_types":[],"pubmed_pub_types":null,"s2_fields_of_study":["Engineering","Environmental Science"],"reference_count":33,"citation_count":73,"influential_citation_count":5,"is_open_access":false,"arxiv_categories":null,"arxiv_license":null,"arxiv_journal_ref":null,"mesh_headings":null,"chemicals":null,"comments_corrections":null,"source_flags":1,"s2_open_access_pdf_url":null,"s2_open_access_landing_url":null,"s2_open_access_license":null,"s2_open_access_status":null,"pmc_open_access_pdf_url":null,"pmc_open_access_landing_url":null,"pmc_open_access_license":null,"pmc_open_access_status":null,"unpaywall_open_access_pdf_url":null,"unpaywall_open_access_landing_url":null,"unpaywall_open_access_license":null,"unpaywall_open_access_status":null,"abstract":"Abstract A pilot-scale upflow anaerobic sludge blanket (UASB) reactor (120 L) was operated for biogas production by vinasse degradation. The reactor was operated for 700 days using a recirculation rate of 1:3 with organic loading rates (OLR) ranging from 0.5 to 32.4 kgCOD.m−3.d−1, upflow velocities ranged from 0.008 to 0.292 m h−1(feed added with recirculation) and the hydraulic retention time ranged from 33.33 to 0.86 days. The reactor demonstrated a stable performance at OLR at all applied loads. The COD removal efficiencies throughout the experiment were 87.5 ± 5.3 and 90.5 ± 3.6% for raw and soluble COD, respectively. Total volatile acids ranged from 59 mg L−1 to 585 mg L−1. The concentration of acetic and propionic acids at the reactor effluent reached 28 mg L−1 on OLR 20 kgCOD.m−3.d−1. The methane content in the biogas was 68.8 ± 7.14%.The methane yield of 0.299 ± 0.066 LCH4.g−1COD corresponds to about 76.4% of the theoretical methane yield. The methane productivity reached the highest value of 8.059 LCH4.L−1.d−1 at 32.27 kgCOD.m−3.d−1., corresponding to 83.9% of the theoretical value (9.611 LCH4.L−1.d−1). This result is very promising for power generation in the sugar and ethanol industry, complementing the energy balance of sugarcane, as shown by an energy balance evaluation.","claims":[{"public_id":"cl_c84014ae5764b3be94452072c14447ca","status":"active","text":"Methane content in the biogas was 68.8 ± 7.14%, and the methane yield of 0.299 ± 0.066 LCH4.g−1COD corresponded to about 76.4% of the theoretical methane yield.","confidence":0.95,"contributors":[{"id":32,"public_id":"7c402c1b98","public_label":"뀨 (7c402c1b98)","roles":["extraction"],"url":"https://sah.borca.ai/u/7c402c1b98"},{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["review"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_c84014ae5764b3be94452072c14447ca"},{"public_id":"cl_bc87c41ebe8a8517973149f130b35bcf","status":"active","text":"The UASB reactor achieved COD removal efficiencies of 87.5 ± 5.3% for raw COD and 90.5 ± 3.6% for soluble COD over the 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