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Production and stability of myco-flocculants from Lentinus squarrosulus RWF5 and sSimplicillium obclavatum RWF6 for reduction of water turbidity

The production and stability of two novel myco-flocculants produced by river water fungus (RWF) were investigated. Screening tests were conducted to find suitable nutrients, pH, nutrient concentration, inoculum dose, and stability for two myco-flocculants L. squarrosulus (RWF5) and S. obclavatum (RW...

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Main Authors: Jebun, Nessa, Alam, Md. Zahangir, Al-Mamun, Abdullah, Ahmad Raus, Raha
Format: Article
Language:English
English
English
Published: Kulliyyah of Engineering, International Islamic University Malaysia 2018
Subjects:
TD169 Environmental protection
Online Access:http://irep.iium.edu.my/64273/1/64273_Production%20and%20stability%20of%20myco-flocculants.pdf
http://irep.iium.edu.my/64273/2/64273_Production%20and%20stability%20of%20myco-flocculants_SCOPUS.pdf
http://irep.iium.edu.my/64273/3/64273_Production%20and%20stability%20of%20myco-flocculants_WOS.pdf
http://irep.iium.edu.my/64273/
http://journals.iium.edu.my/ejournal/index.php/iiumej/article/view/843
https://doi.org/10.31436/iiumej.v19i1.843
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spelling my.iium.irep.64273 http://irep.iium.edu.my/64273/ Production and stability of myco-flocculants from Lentinus squarrosulus RWF5 and sSimplicillium obclavatum RWF6 for reduction of water turbidity Jebun, Nessa Alam, Md. Zahangir Al-Mamun, Abdullah Ahmad Raus, Raha TD169 Environmental protection The production and stability of two novel myco-flocculants produced by river water fungus (RWF) were investigated. Screening tests were conducted to find suitable nutrients, pH, nutrient concentration, inoculum dose, and stability for two myco-flocculants L. squarrosulus (RWF5) and S. obclavatum (RWF6). The strains showed good flocculating activity in reducing turbidity of kaolin suspension while malt extract was used as nutrient source. Supernatants of RWF5 and RWF6 were able to reduce turbidity from 900±10 NTU to 46 NTU (95%) and 195 NTU (78%), respectively. In order to enhance the production, optimization of cultivation conditions were studied using a one-factor-at-a-time (OFAT) method. L. squarrosulus (RWF5) reduced 96% of turbidity at optimum conditions, comprising of 0.1% (w/v) malt extract, 3% (v/v) inoculum dose, and initial pH 7.0 for 6 days. The results of the compatible mixed culture showed good flocculation activity at 88% compared to a single culture of S. obclavatum at 78%. On the other hand, L. squarrosulus showed better turbidity reduction in the single culture rather than the mixed culture. The stability of L. squarrosulus and S. obclavatum supernatants showed excellent turbidity reduction over a wide pH range of 4-8 with the maximal flocculation rate of 96% and 90%, respectively, at pH 7.0. They also exhibited high turbidity removal ability in a temperature range of 4 oC – 55 oC for 24h with a maximum turbidity removal rate of 96% (RW5) and 87% (RW6) at 25 oC. Time stability of the L. squarrosulus supernatant showed good turbidity removal potential at above 90% at room temperature (28± 2 oC) and 85% at low temperature (4 oC) for 12 days. The high flocculating rate of the myco-flocculants and their good stability under wide range of temperature indicated their potentiality as biodegradable flocculants for water and wastewater treatment industry. Kulliyyah of Engineering, International Islamic University Malaysia 2018-06-01 Article PeerReviewed application/pdf en http://irep.iium.edu.my/64273/1/64273_Production%20and%20stability%20of%20myco-flocculants.pdf application/pdf en http://irep.iium.edu.my/64273/2/64273_Production%20and%20stability%20of%20myco-flocculants_SCOPUS.pdf application/pdf en http://irep.iium.edu.my/64273/3/64273_Production%20and%20stability%20of%20myco-flocculants_WOS.pdf Jebun, Nessa and Alam, Md. Zahangir and Al-Mamun, Abdullah and Ahmad Raus, Raha (2018) Production and stability of myco-flocculants from Lentinus squarrosulus RWF5 and sSimplicillium obclavatum RWF6 for reduction of water turbidity. IIUM Engineering Journal, 19 (1). pp. 48-58. ISSN 1511-788X http://journals.iium.edu.my/ejournal/index.php/iiumej/article/view/843 https://doi.org/10.31436/iiumej.v19i1.843
institution Universiti Islam Antarabangsa Malaysia
building IIUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider International Islamic University Malaysia
content_source IIUM Repository (IREP)
url_provider http://irep.iium.edu.my/
language English
English
English
topic TD169 Environmental protection
spellingShingle TD169 Environmental protection
Jebun, Nessa
Alam, Md. Zahangir
Al-Mamun, Abdullah
Ahmad Raus, Raha
Production and stability of myco-flocculants from Lentinus squarrosulus RWF5 and sSimplicillium obclavatum RWF6 for reduction of water turbidity
description The production and stability of two novel myco-flocculants produced by river water fungus (RWF) were investigated. Screening tests were conducted to find suitable nutrients, pH, nutrient concentration, inoculum dose, and stability for two myco-flocculants L. squarrosulus (RWF5) and S. obclavatum (RWF6). The strains showed good flocculating activity in reducing turbidity of kaolin suspension while malt extract was used as nutrient source. Supernatants of RWF5 and RWF6 were able to reduce turbidity from 900±10 NTU to 46 NTU (95%) and 195 NTU (78%), respectively. In order to enhance the production, optimization of cultivation conditions were studied using a one-factor-at-a-time (OFAT) method. L. squarrosulus (RWF5) reduced 96% of turbidity at optimum conditions, comprising of 0.1% (w/v) malt extract, 3% (v/v) inoculum dose, and initial pH 7.0 for 6 days. The results of the compatible mixed culture showed good flocculation activity at 88% compared to a single culture of S. obclavatum at 78%. On the other hand, L. squarrosulus showed better turbidity reduction in the single culture rather than the mixed culture. The stability of L. squarrosulus and S. obclavatum supernatants showed excellent turbidity reduction over a wide pH range of 4-8 with the maximal flocculation rate of 96% and 90%, respectively, at pH 7.0. They also exhibited high turbidity removal ability in a temperature range of 4 oC – 55 oC for 24h with a maximum turbidity removal rate of 96% (RW5) and 87% (RW6) at 25 oC. Time stability of the L. squarrosulus supernatant showed good turbidity removal potential at above 90% at room temperature (28± 2 oC) and 85% at low temperature (4 oC) for 12 days. The high flocculating rate of the myco-flocculants and their good stability under wide range of temperature indicated their potentiality as biodegradable flocculants for water and wastewater treatment industry.
format Article
author Jebun, Nessa
Alam, Md. Zahangir
Al-Mamun, Abdullah
Ahmad Raus, Raha
author_facet Jebun, Nessa
Alam, Md. Zahangir
Al-Mamun, Abdullah
Ahmad Raus, Raha
author_sort Jebun, Nessa
title Production and stability of myco-flocculants from Lentinus squarrosulus RWF5 and sSimplicillium obclavatum RWF6 for reduction of water turbidity
title_short Production and stability of myco-flocculants from Lentinus squarrosulus RWF5 and sSimplicillium obclavatum RWF6 for reduction of water turbidity
title_full Production and stability of myco-flocculants from Lentinus squarrosulus RWF5 and sSimplicillium obclavatum RWF6 for reduction of water turbidity
title_fullStr Production and stability of myco-flocculants from Lentinus squarrosulus RWF5 and sSimplicillium obclavatum RWF6 for reduction of water turbidity
title_full_unstemmed Production and stability of myco-flocculants from Lentinus squarrosulus RWF5 and sSimplicillium obclavatum RWF6 for reduction of water turbidity
title_sort production and stability of myco-flocculants from lentinus squarrosulus rwf5 and ssimplicillium obclavatum rwf6 for reduction of water turbidity
publisher Kulliyyah of Engineering, International Islamic University Malaysia
publishDate 2018
url http://irep.iium.edu.my/64273/1/64273_Production%20and%20stability%20of%20myco-flocculants.pdf
http://irep.iium.edu.my/64273/2/64273_Production%20and%20stability%20of%20myco-flocculants_SCOPUS.pdf
http://irep.iium.edu.my/64273/3/64273_Production%20and%20stability%20of%20myco-flocculants_WOS.pdf
http://irep.iium.edu.my/64273/
http://journals.iium.edu.my/ejournal/index.php/iiumej/article/view/843
https://doi.org/10.31436/iiumej.v19i1.843
_version_ 1643617211573600256
score 13.211869

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