scholarly journals Treatment of laundry wastewater using chemically treated sugarcane bagasse

Author(s):  
A.B Ayu Haslija ◽  
Rabee Abdulrazzak
Author(s):  
CLAUDIO LIMA AGUIAR ◽  
TOBIAS J. B. MENEZES

Avaliou-se a produção de celulases e xilanase de Aspergillus niger IZ9, crescido sobre bagaço de cana, quimicamente tratado, como substrato. Os tratamentos foram: solução de hidróxido de sódio a 4%, e solução de hidróxido de sódio a 4%, ácido fosfórico p.a. e vapor. A produção das enzimas celulolíticas (celulase total, endoglicanase e ­glicosidase) e xilanase foi observada nos bagaços tratados e nãotratado. O tratamento com solução de hidróxido de sódio a 4% promoveu maior indução de síntese da maioria das enzimas, com exceção de ­glicosidase, a qual apresentou produção semelhante para os bagaços tratados quimicamente. Abstract It was evaluated the production of cellulases and xylanase by Aspergillus niger IZ09 grown in a substrate consisted of chemically treated sugarcane bagasse. The treatments were: 4% sodium hydroxide solution and 4% sodium hydroxide solution, phosphoric acid and steam. The production of the cellulolytic enzymes (total cellulase, endoglycanase and B.CEPPA, Curitiba, v. 18, n. 1, jan./jun.2000 67 ­glucosidase) and xylanase was observed in the treated and nontreated bagasses. The treatment with 4% sodium hydroxide solution promoted a greater induction of the synthesis of the majority of the enzymes, with exception of ­glucosidase, which showed similar production for both chemically treated bagasses.


2019 ◽  
Vol 6 (1) ◽  
pp. 1708644 ◽  
Author(s):  
V. Vidyashri ◽  
Henrita Lewis ◽  
P. Narayanasamy ◽  
G T Mahesha ◽  
K. Subrahmanya Bhat ◽  
...  

Materials ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 5387
Author(s):  
Lalta Prasad ◽  
Shiv Kumar ◽  
Raj Vardhan Patel ◽  
Anshul Yadav ◽  
Virendra Kumar ◽  
...  

In this study, experiments are performed to study the physical and mechanical behaviour of chemically-treated sugarcane bagasse fibre-reinforced epoxy composite. The effect of alkali treatment, fibre varieties, and fibre lengths on physical and mechanical properties of the composites is studied. To study the morphology of the fractured composites, scanning electron microscopy is performed over fractured composite surfaces. The study found that the variety and lengths of fibres significantly influence the physical and mechanical properties of the sugarcane bagasse-reinforced composites. From the wear study, it is found that the composite fabricated from smaller fibre lengths show low wear. The chemically-treated bagasse-reinforced composites fabricated in this study show good physical and mechanical properties and are, therefore, proposed for use in applications in place of conventional natural fibres.


The present work aims to investigate relating to natural fibre-based epoxy composites. This study is dealt with the fabrication and chemical treatment evaluation of waste sugarcane bagasse fibre and wood dust powder composite. Sugarcane bagasse fibre and wood dust powder found to be good bonding owing to its properties like light-weight, high specific strength, bio-degradability and so on. The sugarcane shells are collected from local juice job and then it is chemically treated along with removal of sugar, and then dried in open atmosphere in the presence of sunlight. It is then pulverized to particle sizes of 1.0 mm, 1.5 mm, 2.0 mm and with a weight ratio of 75:25, the epoxy resins are mixed through which the fibres with 6 mm thick mould composites are made with different flat-shape. As per ASTM standards, specimens are made for conducting the experiments such as density determination, moisture absorption and mechanical tests. The sugarcane bagasse/epoxy composites (SB/EC) with wood dust powder were chemically treated with benzoic acid and sodium hydroxide for obtaining the mechanical properties. The results show that chemically treated composites have more flexural and tensile strength as compared with untreated sugar-free SB/EC. Alkali (NaoH) treatment obtains the highest flexural and tensile strength as compared with benzoic acid treatment. Both flexural and tensile strength of synthetically(chemical) treated composites, in any case, discovered lower than those of untreated sugarcane bagasse filled composite when unwashed sugarcane bagasse which contained sugar. Thus without additional chemical treatment, sugarcane bagasse perhaps used as a reinforcing agent since sugar contributes to the mechanical properties of the composites.


2018 ◽  
Vol 38 ◽  
pp. 29-38
Author(s):  
Puspa Lal Homagai ◽  
Namita Bhandari ◽  
Sahira Joshi

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