Isolation of chitosan from shrimp shell (Metapenaeus monoceros) as adsorbent for removal of metanil yellow dyes

Author(s):  
Putri Ramadhani ◽  
Zulkarnain Chaidir ◽  
Zilfa Zilfa ◽  
Syiffa Fauzia ◽  
Rahmiana Zein
2020 ◽  
Vol 197 ◽  
pp. 413-423
Author(s):  
Putri Ramadhani ◽  
Zulkarnain Chaidir ◽  
Zilfa Zilfa ◽  
Zebbil Billian Tomi ◽  
Disza Rahmiarti ◽  
...  

2017 ◽  
Vol 2 (1) ◽  
pp. 29
Author(s):  
Yenni Rahmadani ◽  
Fauzia Rozani ◽  
Azimatur Rahmi ◽  
Muslim Suardi

<p><em>The adsorption </em><em>activities of chitosan from dried shrimp shells Metapenaeus monoceros (Fabrices) has been studied by analyzing its ability to remove lead ion from aqueous solution. This process including (i) isolation of chitosan from shrimp sells by  deproteinization with NaOH, demineralization by adding HCl solution, decolorization</em> <em>with sodium hypo chloride and deacetylation by adding NaOH, (ii) studied of interaction between chitosan and Pb. The qualitative and quantitative method were used to analyses this chitosan. The isolate of chitosan has 72.39 % degree of deacetylation. This isolate was added into lead solution 10 – 1000 mg/l at pH 5. Furthermore, the solutions were shaken during 24 hours. After separation of chitosan from solution, the filtrate was identified by using Atomic Adsorption Spectrophotometric. The results showed that chitosan from dried shrimp shells can used as adsorbent of lead ion at pH 5 which followed Freundlich isotherm (r &gt; 0.95).</em></p>


2021 ◽  
Vol 32 ◽  
pp. 101947
Author(s):  
Bianca D'arck Melo Cavalcante ◽  
Thamarys Scapini ◽  
Aline Frumi Camargo ◽  
Alessandro Ulrich ◽  
Charline Bonatto ◽  
...  

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1887
Author(s):  
Viviana Quintero ◽  
Arturo Gonzalez-Quiroga ◽  
Angel Darío Gonzalez-Delgado

The conservation and proper management of natural resources constitute one of the main objectives of the 2030 Agenda for Sustainable Development designed by the Member States of the United Nations. In this work, a hybrid strategy based on process integration is proposed to minimize freshwater consumption while reusing wastewater. As a novelty, the strategy included a heuristic approach for identifying the minimum consumption of freshwater with a preliminary design of the water network, considering the concept of reuse and multiple pollutants. Then, mathematical programming techniques were applied to evaluate the possibilities of regeneration of the source streams through the inclusion of intercept units and establish the optimal design of the network. This strategy was used in the shrimp shell waste process to obtain chitosan, where a minimum freshwater consumption of 277 t/h was identified, with a reuse strategy and an optimal value of US $5.5 million for the design of the water network.


2020 ◽  
Vol 316 ◽  
pp. 123923 ◽  
Author(s):  
Guang Guo ◽  
Jiuxiao Hao ◽  
Fang Tian ◽  
Chong Liu ◽  
Keqiang Ding ◽  
...  

2001 ◽  
Vol 44 (10) ◽  
pp. 301-307 ◽  
Author(s):  
D.Y. Lee ◽  
S.R. Jing ◽  
Y.F. Lin

In this study, three kinds of seafood wastes (shrimp shell particles, oyster shell particles, and internal bone particles of squid) were added to dewatered sludge preconditioned with chemical conditioner (alum or ferric chloride). The specific resistance of sludge dewatering was calculated to evaluate the effectiveness of sludge dewatering. The result showed that adding chemical conditioners alone caused noticeable pH decrease and resulted in a conditioned sludge with poor filterability. The addition of oyster shell or internal bone of squid to chemically preconditioned sludge efficiently improved sludge dewatering. This result was possibly due to both the availability of alkaline and the function as skeleton builder provided by these two waste solids. Particle sizes (0.59-2.0 mm) of oyster shell and internal bone of squid were found to have insignificant effect on sludge dewatering.


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