Combined heat treatment and acid hydrolysis of cassava grate waste (CGW) biomass for ethanol production
The effect of combined heat treatment and acid hydrolysis (various concentrations) on cassava grate waste (CGW) biomass for ethanol production was investigated. At high concentrations of H 2SO 4 (1–5 m), hydrolysis of the CGW biomass was achieved but with excessive charring or dehydration reaction....
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| Veröffentlicht in: | Waste Management 1997-01, Vol.17 (1), p.91-96 |
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| container_title | Waste Management |
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| creator | Agu, R.C. Amadife, A.E. Ude, C.M. Onyia, A. Ogu, E.O. Okafor, M. Ezejiofor, E. |
| description | The effect of combined heat treatment and acid hydrolysis (various concentrations) on cassava grate waste (CGW) biomass for ethanol production was investigated. At high concentrations of H
2SO
4 (1–5
m), hydrolysis of the CGW biomass was achieved but with excessive charring or dehydration reaction. At lower acid concentrations, hydrolysis of CGW biomass was also achieved with 0.3–0.5
m H
2SO
4, while partial hydrolysis was obtained below 0.3
m H
2SO
4 (the lowest acid concentration that hydrolysed CGW biomass) at 120°C and 1 atm pressure for 30 min. A 60% process efficiency was achieved with 0.3
m H
2SO
4 in hydrolysing the cellulose and lignin materials present in the CGW biomass. High acid concentration is therefore not required for CGW biomass hydrolysis. The low acid concentration required for CGW biomass hydrolysis, as well as the minimal cost required for detoxification of CGW biomass because of low hydrogen cyanide content of CGW biomass would seem to make this process very economical. From three litres of the CGW biomass hydrolysate obtained from hydrolysis with 0.3
m H
2SO
4, ethanol yield was 3.5 (v/v %) after yeast fermentation. However, although the process resulted in gainful utilization of CGW biomass, additional costs would be required to effectively dispose new by-products generated from CGW biomass processing. |
| doi_str_mv | 10.1016/S0956-053X(97)00027-5 |
| format | Article |
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2SO
4 (1–5
m), hydrolysis of the CGW biomass was achieved but with excessive charring or dehydration reaction. At lower acid concentrations, hydrolysis of CGW biomass was also achieved with 0.3–0.5
m H
2SO
4, while partial hydrolysis was obtained below 0.3
m H
2SO
4 (the lowest acid concentration that hydrolysed CGW biomass) at 120°C and 1 atm pressure for 30 min. A 60% process efficiency was achieved with 0.3
m H
2SO
4 in hydrolysing the cellulose and lignin materials present in the CGW biomass. High acid concentration is therefore not required for CGW biomass hydrolysis. The low acid concentration required for CGW biomass hydrolysis, as well as the minimal cost required for detoxification of CGW biomass because of low hydrogen cyanide content of CGW biomass would seem to make this process very economical. From three litres of the CGW biomass hydrolysate obtained from hydrolysis with 0.3
m H
2SO
4, ethanol yield was 3.5 (v/v %) after yeast fermentation. However, although the process resulted in gainful utilization of CGW biomass, additional costs would be required to effectively dispose new by-products generated from CGW biomass processing.</description><identifier>ISSN: 0956-053X</identifier><identifier>EISSN: 1879-2456</identifier><identifier>DOI: 10.1016/S0956-053X(97)00027-5</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>09 BIOMASS FUELS ; ACID HYDROLYSIS ; Biofuel production ; Biological and medical sciences ; Biotechnology ; CASSAVA ; Energy ; ETHANOL ; FERMENTATION ; Fundamental and applied biological sciences. Psychology ; HEAT TREATMENTS ; Industrial applications and implications. Economical aspects ; ORGANIC WASTES ; WASTE PROCESSING ; YIELDS</subject><ispartof>Waste Management, 1997-01, Vol.17 (1), p.91-96</ispartof><rights>1997</rights><rights>1998 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c466t-65c1ba5ff4e2bcf56469dddeb1555ad5cd3e361ad6470e8024957cec8819b723</citedby><cites>FETCH-LOGICAL-c466t-65c1ba5ff4e2bcf56469dddeb1555ad5cd3e361ad6470e8024957cec8819b723</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0956053X97000275$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,881,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=2130535$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/571636$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Agu, R.C.</creatorcontrib><creatorcontrib>Amadife, A.E.</creatorcontrib><creatorcontrib>Ude, C.M.</creatorcontrib><creatorcontrib>Onyia, A.</creatorcontrib><creatorcontrib>Ogu, E.O.</creatorcontrib><creatorcontrib>Okafor, M.</creatorcontrib><creatorcontrib>Ezejiofor, E.</creatorcontrib><title>Combined heat treatment and acid hydrolysis of cassava grate waste (CGW) biomass for ethanol production</title><title>Waste Management</title><description>The effect of combined heat treatment and acid hydrolysis (various concentrations) on cassava grate waste (CGW) biomass for ethanol production was investigated. At high concentrations of H
2SO
4 (1–5
m), hydrolysis of the CGW biomass was achieved but with excessive charring or dehydration reaction. At lower acid concentrations, hydrolysis of CGW biomass was also achieved with 0.3–0.5
m H
2SO
4, while partial hydrolysis was obtained below 0.3
m H
2SO
4 (the lowest acid concentration that hydrolysed CGW biomass) at 120°C and 1 atm pressure for 30 min. A 60% process efficiency was achieved with 0.3
m H
2SO
4 in hydrolysing the cellulose and lignin materials present in the CGW biomass. High acid concentration is therefore not required for CGW biomass hydrolysis. The low acid concentration required for CGW biomass hydrolysis, as well as the minimal cost required for detoxification of CGW biomass because of low hydrogen cyanide content of CGW biomass would seem to make this process very economical. From three litres of the CGW biomass hydrolysate obtained from hydrolysis with 0.3
m H
2SO
4, ethanol yield was 3.5 (v/v %) after yeast fermentation. However, although the process resulted in gainful utilization of CGW biomass, additional costs would be required to effectively dispose new by-products generated from CGW biomass processing.</description><subject>09 BIOMASS FUELS</subject><subject>ACID HYDROLYSIS</subject><subject>Biofuel production</subject><subject>Biological and medical sciences</subject><subject>Biotechnology</subject><subject>CASSAVA</subject><subject>Energy</subject><subject>ETHANOL</subject><subject>FERMENTATION</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>HEAT TREATMENTS</subject><subject>Industrial applications and implications. Economical aspects</subject><subject>ORGANIC WASTES</subject><subject>WASTE PROCESSING</subject><subject>YIELDS</subject><issn>0956-053X</issn><issn>1879-2456</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1997</creationdate><recordtype>article</recordtype><recordid>eNqNkU2LFDEQhoMoOK7-BCGCyO6hNenOR_dJlkFXYcGDC3oL1Un1TqQ7WZPMyvx70zPLXvVSBZXnrUrVS8hrzt5zxtWH72yQqmGy-3k-6AvGWKsb-YRseK-HphVSPSWbR-Q5eZHzL8a46DnbkNttXEYf0NEdQqEl1bhgKBSCo2B9rR9civMh-0zjRC3kDPdAbxMUpH8g13i-vfpxQUcfl_pIp5golh2EONO7FN3eFh_DS_Jsgjnjq4d8Rm4-f7rZfmmuv1193V5eN1YoVRolLR9BTpPAdrSTVEINzjkcuZQSnLSuw05xcEpohj1rxSC1Rdv3fBh1252RN6e2MRdvsvUF7c7GENAWIzVXnarMuxNTf_d7j7mYxWeL8wwB4z6bCmnN9X-AQuheHzvKE2hTzDnhZO6SXyAdDGdmtcgcLTLr_c2gzdEiI6vu7cMAyBbmKUGwPj-KW95VxYp9PGFYD3fvMa2LYbDofFr3ctH_Y9BfYIumHw</recordid><startdate>19970101</startdate><enddate>19970101</enddate><creator>Agu, R.C.</creator><creator>Amadife, A.E.</creator><creator>Ude, C.M.</creator><creator>Onyia, A.</creator><creator>Ogu, E.O.</creator><creator>Okafor, M.</creator><creator>Ezejiofor, E.</creator><general>Elsevier Ltd</general><general>Elsevier Science</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>C1K</scope><scope>SOI</scope><scope>7T7</scope><scope>7TV</scope><scope>8FD</scope><scope>FR3</scope><scope>P64</scope><scope>OTOTI</scope></search><sort><creationdate>19970101</creationdate><title>Combined heat treatment and acid hydrolysis of cassava grate waste (CGW) biomass for ethanol production</title><author>Agu, R.C. ; Amadife, A.E. ; Ude, C.M. ; Onyia, A. ; Ogu, E.O. ; Okafor, M. ; Ezejiofor, E.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c466t-65c1ba5ff4e2bcf56469dddeb1555ad5cd3e361ad6470e8024957cec8819b723</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1997</creationdate><topic>09 BIOMASS FUELS</topic><topic>ACID HYDROLYSIS</topic><topic>Biofuel production</topic><topic>Biological and medical sciences</topic><topic>Biotechnology</topic><topic>CASSAVA</topic><topic>Energy</topic><topic>ETHANOL</topic><topic>FERMENTATION</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>HEAT TREATMENTS</topic><topic>Industrial applications and implications. Economical aspects</topic><topic>ORGANIC WASTES</topic><topic>WASTE PROCESSING</topic><topic>YIELDS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Agu, R.C.</creatorcontrib><creatorcontrib>Amadife, A.E.</creatorcontrib><creatorcontrib>Ude, C.M.</creatorcontrib><creatorcontrib>Onyia, A.</creatorcontrib><creatorcontrib>Ogu, E.O.</creatorcontrib><creatorcontrib>Okafor, M.</creatorcontrib><creatorcontrib>Ezejiofor, E.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Environment Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Pollution Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>OSTI.GOV</collection><jtitle>Waste Management</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Agu, R.C.</au><au>Amadife, A.E.</au><au>Ude, C.M.</au><au>Onyia, A.</au><au>Ogu, E.O.</au><au>Okafor, M.</au><au>Ezejiofor, E.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Combined heat treatment and acid hydrolysis of cassava grate waste (CGW) biomass for ethanol production</atitle><jtitle>Waste Management</jtitle><date>1997-01-01</date><risdate>1997</risdate><volume>17</volume><issue>1</issue><spage>91</spage><epage>96</epage><pages>91-96</pages><issn>0956-053X</issn><eissn>1879-2456</eissn><abstract>The effect of combined heat treatment and acid hydrolysis (various concentrations) on cassava grate waste (CGW) biomass for ethanol production was investigated. At high concentrations of H
2SO
4 (1–5
m), hydrolysis of the CGW biomass was achieved but with excessive charring or dehydration reaction. At lower acid concentrations, hydrolysis of CGW biomass was also achieved with 0.3–0.5
m H
2SO
4, while partial hydrolysis was obtained below 0.3
m H
2SO
4 (the lowest acid concentration that hydrolysed CGW biomass) at 120°C and 1 atm pressure for 30 min. A 60% process efficiency was achieved with 0.3
m H
2SO
4 in hydrolysing the cellulose and lignin materials present in the CGW biomass. High acid concentration is therefore not required for CGW biomass hydrolysis. The low acid concentration required for CGW biomass hydrolysis, as well as the minimal cost required for detoxification of CGW biomass because of low hydrogen cyanide content of CGW biomass would seem to make this process very economical. From three litres of the CGW biomass hydrolysate obtained from hydrolysis with 0.3
m H
2SO
4, ethanol yield was 3.5 (v/v %) after yeast fermentation. However, although the process resulted in gainful utilization of CGW biomass, additional costs would be required to effectively dispose new by-products generated from CGW biomass processing.</abstract><cop>Oxford</cop><cop>New York, NY</cop><pub>Elsevier Ltd</pub><doi>10.1016/S0956-053X(97)00027-5</doi><tpages>6</tpages></addata></record> |
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| source | Elsevier ScienceDirect Journals |
| subjects | 09 BIOMASS FUELS ACID HYDROLYSIS Biofuel production Biological and medical sciences Biotechnology CASSAVA Energy ETHANOL FERMENTATION Fundamental and applied biological sciences. Psychology HEAT TREATMENTS Industrial applications and implications. Economical aspects ORGANIC WASTES WASTE PROCESSING YIELDS |
| title | Combined heat treatment and acid hydrolysis of cassava grate waste (CGW) biomass for ethanol production |
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