A Review on Influential Factors on Polyhydroxyalkonates (PHA) Production with Feast /Famine Regime Using Waste Sludge from Biological Wastewater Treatment
Due to the increased use of plastic materials in the daily lives of human all over the worlds and the concerns about the negative impacts of petroleum based plastics on aquatic and soil environments, the researchers have attempted to introduce biodegradable alternatives to such plastics. The non-bio...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | fas |
| Published: |
Iran Water and Wastewater Association
2021-04-01
|
| Series: | علوم و مهندسی آب و فاضلاب |
| Subjects: | |
| Online Access: | http://www.jwwse.ir/article_132660_29efe836761780db4ac5256f36681b2b.pdf?lang=en |
| _version_ | 1817998933344911360 |
|---|---|
| author | Azar Asadi Farinaz Ahmadi Ali Akbar Zinatizadeh Ali Namvar Asl |
| author_facet | Azar Asadi Farinaz Ahmadi Ali Akbar Zinatizadeh Ali Namvar Asl |
| author_sort | Azar Asadi |
| collection | DOAJ |
| description | Due to the increased use of plastic materials in the daily lives of human all over the worlds and the concerns about the negative impacts of petroleum based plastics on aquatic and soil environments, the researchers have attempted to introduce biodegradable alternatives to such plastics. The non-biodegradability of petroleum based plastic is due to the large and long polymer molecules and the strong bonds between them, which ultimately makes it very difficult and even impossible for microorganisms to break down the molecules. The bioplastics are simply decomposed into their constituent units by the activity of living organisms and do not remain in the environment. Polyhydroxyalkonates (PHAs) are among the biodegradable polymers that have been received attention in the recent years. PHAs are polyester compounds that are produced by bacteria under special conditions. Feast/famine methodology is one of the methods for PHA production from bacteria. In this method, a sequencing batch recator (SBR) is used to supply feast and famine conditions, so that bacteria which are capable to produce PHA, compete with other microorganisms and obtain the maximum amount of PHA from the culture medium. In this review article, the method of feast/famine and the influential factors on producing PHA including feed type, feast/famine ratio, feed to microorganism (F/M) ratio, dissolved oxygen and nutrients concentration are investigated. |
| first_indexed | 2024-04-14T03:00:59Z |
| format | Article |
| id | doaj.art-fb4c38d1e24a4262afb156f23c924348 |
| institution | Directory Open Access Journal |
| issn | 2588-395X |
| language | fas |
| last_indexed | 2024-04-14T03:00:59Z |
| publishDate | 2021-04-01 |
| publisher | Iran Water and Wastewater Association |
| record_format | Article |
| series | علوم و مهندسی آب و فاضلاب |
| spelling | doaj.art-fb4c38d1e24a4262afb156f23c9243482022-12-22T02:15:54ZfasIran Water and Wastewater Associationعلوم و مهندسی آب و فاضلاب2588-395X2021-04-0161152910.22112/JWWSE.2020.230356.1207A Review on Influential Factors on Polyhydroxyalkonates (PHA) Production with Feast /Famine Regime Using Waste Sludge from Biological Wastewater TreatmentAzar Asadi0Farinaz Ahmadi1Ali Akbar Zinatizadeh2Ali Namvar Asl3Department of Applied Chemistry, Faculty of Gas and Petroleum, Yasouj University, Gachsaran 75918-74831, Iran.Master of Science, Department of applied chemistry, Faculty of chemistry, Razi University, Kermanshah, Iran.Professor, Department of applied chemistry, Faculty of chemistry, Razi University, Kermanshah, IranUndergraduate Student, Department of applied chemistry, Faculty of Gas and Petroleum, Yasouj University, Gachsaran 75918-74831, Iran.Due to the increased use of plastic materials in the daily lives of human all over the worlds and the concerns about the negative impacts of petroleum based plastics on aquatic and soil environments, the researchers have attempted to introduce biodegradable alternatives to such plastics. The non-biodegradability of petroleum based plastic is due to the large and long polymer molecules and the strong bonds between them, which ultimately makes it very difficult and even impossible for microorganisms to break down the molecules. The bioplastics are simply decomposed into their constituent units by the activity of living organisms and do not remain in the environment. Polyhydroxyalkonates (PHAs) are among the biodegradable polymers that have been received attention in the recent years. PHAs are polyester compounds that are produced by bacteria under special conditions. Feast/famine methodology is one of the methods for PHA production from bacteria. In this method, a sequencing batch recator (SBR) is used to supply feast and famine conditions, so that bacteria which are capable to produce PHA, compete with other microorganisms and obtain the maximum amount of PHA from the culture medium. In this review article, the method of feast/famine and the influential factors on producing PHA including feed type, feast/famine ratio, feed to microorganism (F/M) ratio, dissolved oxygen and nutrients concentration are investigated.http://www.jwwse.ir/article_132660_29efe836761780db4ac5256f36681b2b.pdf?lang=enactivated sludgebiodegradable plasticsfeast and faminepolyhydroxyalkonate |
| spellingShingle | Azar Asadi Farinaz Ahmadi Ali Akbar Zinatizadeh Ali Namvar Asl A Review on Influential Factors on Polyhydroxyalkonates (PHA) Production with Feast /Famine Regime Using Waste Sludge from Biological Wastewater Treatment علوم و مهندسی آب و فاضلاب activated sludge biodegradable plastics feast and famine polyhydroxyalkonate |
| title | A Review on Influential Factors on Polyhydroxyalkonates (PHA) Production with Feast /Famine Regime Using Waste Sludge from Biological Wastewater Treatment |
| title_full | A Review on Influential Factors on Polyhydroxyalkonates (PHA) Production with Feast /Famine Regime Using Waste Sludge from Biological Wastewater Treatment |
| title_fullStr | A Review on Influential Factors on Polyhydroxyalkonates (PHA) Production with Feast /Famine Regime Using Waste Sludge from Biological Wastewater Treatment |
| title_full_unstemmed | A Review on Influential Factors on Polyhydroxyalkonates (PHA) Production with Feast /Famine Regime Using Waste Sludge from Biological Wastewater Treatment |
| title_short | A Review on Influential Factors on Polyhydroxyalkonates (PHA) Production with Feast /Famine Regime Using Waste Sludge from Biological Wastewater Treatment |
| title_sort | review on influential factors on polyhydroxyalkonates pha production with feast famine regime using waste sludge from biological wastewater treatment |
| topic | activated sludge biodegradable plastics feast and famine polyhydroxyalkonate |
| url | http://www.jwwse.ir/article_132660_29efe836761780db4ac5256f36681b2b.pdf?lang=en |
| work_keys_str_mv | AT azarasadi areviewoninfluentialfactorsonpolyhydroxyalkonatesphaproductionwithfeastfamineregimeusingwastesludgefrombiologicalwastewatertreatment AT farinazahmadi areviewoninfluentialfactorsonpolyhydroxyalkonatesphaproductionwithfeastfamineregimeusingwastesludgefrombiologicalwastewatertreatment AT aliakbarzinatizadeh areviewoninfluentialfactorsonpolyhydroxyalkonatesphaproductionwithfeastfamineregimeusingwastesludgefrombiologicalwastewatertreatment AT alinamvarasl areviewoninfluentialfactorsonpolyhydroxyalkonatesphaproductionwithfeastfamineregimeusingwastesludgefrombiologicalwastewatertreatment AT azarasadi reviewoninfluentialfactorsonpolyhydroxyalkonatesphaproductionwithfeastfamineregimeusingwastesludgefrombiologicalwastewatertreatment AT farinazahmadi reviewoninfluentialfactorsonpolyhydroxyalkonatesphaproductionwithfeastfamineregimeusingwastesludgefrombiologicalwastewatertreatment AT aliakbarzinatizadeh reviewoninfluentialfactorsonpolyhydroxyalkonatesphaproductionwithfeastfamineregimeusingwastesludgefrombiologicalwastewatertreatment AT alinamvarasl reviewoninfluentialfactorsonpolyhydroxyalkonatesphaproductionwithfeastfamineregimeusingwastesludgefrombiologicalwastewatertreatment |