scholarly journals Enhanced delignification selectivity of alkali-oxygen pulping by wet-storage pretreatment with bleaching wastewater

BioResources ◽  
2020 ◽  
Vol 15 (3) ◽  
pp. 5281-5290
Author(s):  
Bing Sun ◽  
Yingzhen Shan ◽  
Yuxin Liu ◽  
Zhen Shang
Keyword(s):  
Sugarcane Bagasse ◽  
Chemical Compositions ◽  
Paper Making ◽  
Wet Storage

Wet-storage is the most common way to maintain sugarcane bagasse in the pulping and paper-making industry, although there are few studies focused on the selectivity of delignification in pulping for bagasse treated by wet-storage. In this study, wet-storage of bagasse was carried out before alkali-oxygen pulping. The influence of wet-storage pretreatment on the chemical compositions, morphology of bagasse, and the consumption of NaOH in alkali impregnated bagasse meal were investigated. The wet-storage of bagasse resulted in significant improvement in delignification selectivity of alkali-oxygen pulping. After the bagasse was pretreated by wet-storage with bleaching water, the screened yield and crystallinity of the resulting alkali-oxygen pulp were increased.

Structural Modifications of Sugarcane Bagasse Lignins during Wet-Storage and Soda-Oxygen Pulping

2016 ◽  
Vol 4 (10) ◽  
pp. 5311-5318 ◽  
Author(s):  
Fengxia Yue ◽  
Wu Lan ◽  
Songnan Hu ◽  
Ke-Li Chen ◽  
Fachuang Lu
Keyword(s):  
Sugarcane Bagasse ◽  
Structural Modifications ◽  
Wet Storage

scholarly journals Facile and Sustainable Modification for Improving the Adsorption Ability of Sugarcane Bagasse Towards Cationic Organic Pollutants

2021 ◽  
Author(s):  
Pengcheng Luan ◽  
Jianming Liao ◽  
Li Chen ◽  
Yishan Kuang ◽  
Xi Zhang ◽  
...  
Keyword(s):  
Lignocellulosic Biomass ◽  
Sugarcane Bagasse ◽  
Large Scale ◽  
Low Cost ◽  
Industrial Wastes ◽  
Chemical Compositions ◽  
Cationic Polymers ◽  
Charge Densities ◽  
Nacl Concentration ◽  
Adsorption Capability

Abstract Using low-cost agro-industrial wastes and by-products derived from lignocellulosic biomass for adsorption is believed to an affordable and sustainable way to tackle the burning issue of cationic pollution in the marine, while its relatively low adsorption capability limits its large-scale application. Chemical modifications to improve the adsorption abilities of lignocellulosic biomass usually has problems such as long reaction time, high operational cost, rigorous reaction conditions (high temperature and pressure) as well as the second pollution. In this study, a green, rapid, simple, and mild method was developed by using ozone to improve the adsorption abilities of sugarcane bagasse (SB). The effects of ozone modification on the SB and its related adsorption abilities towards cationic polymers were quantitatively investigated. Results showed that ozone modification under very low ozone consumption (~ 1.5 wt%) could efficiently increase the carboxyl groups, change the chemical compositions of SB, and does not significantly change its morphology, thereby ensuring the good recovery and adsorption performance of SB. The maximum adsorption rate and capacity of SB for positively charged methylene blue (MB) were increased about 33.3% and 11.3% than the original SB. Besides, ozone modified SB maintained its high adsorption capability even at high NaCl concentration (0.6 M). For cationic polymer with high charge densities, the adsorption capacity of milled SB increased about 125.4%.

Agricultural Fibres for Paper Pulp

1989 ◽  
Vol 18 (3) ◽  
pp. 96-103 ◽  
Author(s):  
Gururaj Hunsigi
Keyword(s):  
Sugarcane Bagasse ◽  
Present Situation ◽  
Environmental Problems ◽  
Paper Pulp ◽  
Paper Making

The enormous demand for wood for paper-making has created serious and still growing environmental problems. This has led to a revival of interest in the possibility of making greater use of a variety of agricultural fibres as a source of paper pulp. This article reviews the present situation and explores the prospects for a substantial expansion, particularly in the utilization of sugarcane bagasse.

scholarly journals Cogon Grass as an Alternative Fibre for Pulp and Paper-Based Industry: On Chemical and Surface Morphological Properties

2015 ◽  
Vol 773-774 ◽  
pp. 1242-1245 ◽  
Author(s):  
Angzzas Sari Mohd Kassim ◽  
Ashuvila Mohd Aripin ◽  
Nadiah Ishak ◽  
Muhd Hafeez Zainulabidin
Keyword(s):  
Water Solubility ◽  
Paper Industry ◽  
Good Alternative ◽  
Pulp And Paper ◽  
Hot Water ◽  
Morphological Properties ◽  
Chemical Compositions ◽  
Sem Images ◽  
Paper Making ◽  
Increasing Demand

The increasing demand in wood fibre consumptions especially in pulp and paper making has pushed forward the search for alternative fibre resources. Non-wood derived fibre could be good candidates due to its abundance availability. Agriculture residues or non-wood annual plants are good potential fibre resource for pulp and paper making. The objective of this study is to determine the suitability of cogon grass as an alternative fibre for pulp and paper making by analysing its chemical and surface morphological properties. The holocellulose, cellulose, lignin, 1% NaOH solubility, hot water solubility and ash contents were quantified to analyse its chemical characteristics. Quantification of chemical compositions was conducted in accordance with relevant Technical Association of the Pulp and Paper Industry (TAPPI) Tests, Kurscher-Hoffner and Chlorite methods. Scanning electron microscopy (SEM) was used to visualize the surface morphology of the cogon grass fibre. Results obtained indicate that the holocellulose (64.93%) content is comparable with other published non-woods and the lignin (5.67%) content is favourably the lowest. In addition, the hot water and 1% NaOH solubilities are (3.83%) and (19.64%) respectively. SEM images show that cogon grass fibres contained abundance and long fibres which provide good strength of the produced handsheet. Based on the chemical and surface morphological properties analyses, cogon grass is a good alternative fibre resource especially for pulp and paper making industries.

scholarly journals PEMANFAATAN LIMBAH KULIT JAGUNG DAN AMPAS TEBU SEBAGAI KERTAS KEMASAN RAMAH LINGKUNGAN

Jurnal Zarah ◽  
2019 ◽  
Vol 7 (2) ◽  
pp. 79-85
Author(s):  
Oktaffi Oktaffi Arinna Manasikana
Keyword(s):  
Sugarcane Bagasse ◽  
Raw Materials ◽  
Paper Industry ◽  
Environmentally Friendly ◽  
Environmental Issues ◽  
Cellulose Content ◽  
Paper Making ◽  
Corn Husk ◽  
Packaging Paper ◽  
High Cellulose

The increasing need for paper and the demands of the community for environmentally friendly technology is increasing, causing the need for a large supply of paper raw materials to the paper industry sector. The limited supply of raw materials for paper production caused by environmental issues causes the price of paper to rise. The content of bagasse is cellulose, pentosan, lignin and others, while the content of corn husk consists of ash, lignin, cellulose, and hemicellulose. These components can be used as paper making materials because they have high cellulose content. The resulting paper is expected to be used as an environmentally friendly packaging material. The purpose of this study is to determine the potential of corn husk waste and bagasse as an environmentally friendly packaging paper material, as well as to analyze the comparison between the composition of corn husk and sugarcane bagasse to produce the highest quality packaging paper . The test samples used in this study are tensile, elasticity and biodegradability tests. The results showed that corn husk waste and sugarcane bagasse have the potential to be environmentally friendly packaging paper. Paper with the best quality is compared to 25% corn husk and 75% bagasse with a tensile test of 14.8 N elasticity test of 13.33% and 50% biodegrated paper area.

Analytical Electron Microscopy of Ion-Implanted Metals

1985 ◽  
Vol 43 ◽  
pp. 282-285
Author(s):  
D.I. Potter ◽  
M. Ahmed ◽  
K. Ruffing
Keyword(s):  
Electron Microscopy ◽  
Ion Implantation ◽  
Friction And Wear ◽  
Analytical Electron Microscopy ◽  
Chemical Compositions ◽  
Surface Chemical ◽  
Near Surface ◽  
The Past ◽  
Analytical Electron ◽  
Property Changes

Ion implantation, used extensively for the past decade in fabricating semiconductor devices, now provides a unique means for altering the near-surface chemical compositions and microstructures of metals. These alterations often significantly improve physical properties that depend on the surface of the material; for example, catalysis, corrosion, oxidation, hardness, friction and wear. Frequently the mechanisms causing these beneficial alterations and property changes remain obscure and much of the current research in the area of ion implantation metallurgy is aimed at identifying such mechanisms. Investigators thus confront two immediate questions: To what extent is the chemical composition changed by implantation? What is the resulting microstructure? These two questions can be investigated very fruitfully with analytical electron microscopy (AEM), as described below.

TEM/AEM characterization of fine-grained clay minerals in very-low-grade rocks: Evaluation of contamination by empa involving celadonite family minerals

1996 ◽  
Vol 54 ◽  
pp. 694-695
Author(s):  
Gejing Li ◽  
D. R. Peacor ◽  
D. S. Coombs ◽  
Y. Kawachi
Keyword(s):  
Electron Microscopy ◽  
Volcanic Rocks ◽  
Analytical Electron Microscopy ◽  
Metamorphic Rocks ◽  
New Mineral ◽  
Chemical Compositions ◽  
Low Grade ◽  
Fine Grained ◽  
Depth Analysis ◽  
Mineral Aggregates

Recent advances in transmission electron microscopy (TEM) and analytical electron microscopy (AEM) have led to many new insights into the structural and chemical characteristics of very finegrained, optically homogeneous mineral aggregates in sedimentary and very low-grade metamorphic rocks. Chemical compositions obtained by electron microprobe analysis (EMPA) on such materials have been shown by TEM/AEM to result from beam overlap on contaminant phases on a scale below resolution of EMPA, which in turn can lead to errors in interpretation and determination of formation conditions. Here we present an in-depth analysis of the relation between AEM and EMPA data, which leads also to the definition of new mineral phases, and demonstrate the resolution power of AEM relative to EMPA in investigations of very fine-grained mineral aggregates in sedimentary and very low-grade metamorphic rocks.Celadonite, having end-member composition KMgFe3+Si4O10(OH)2, and with minor substitution of Fe2+ for Mg and Al for Fe3+ on octahedral sites, is a fine-grained mica widespread in volcanic rocks and volcaniclastic sediments which have undergone low-temperature alteration in the oceanic crust and in burial metamorphic sequences.

Economy in Paper Making

1889 ◽  
Vol 28 (707supp) ◽  
pp. 11293-11294
Author(s):  
George E. Davis ◽  
P. Duxbury
Keyword(s):  
Paper Making
Sign in / Sign up

Export Citation Format

Share Document