PENINGKATAN MUTU BAHAN PENGISI KERTAS GROUND CALCIUM CARBONATE MELALUI MODIFIKASI DENGAN TAMARIND KERNEL POWDER (QUALITY IMPROVEMENT OF GROUND CALCIUM CARBONATE AS FILLER IN PAPERMAKING THROUGH MODIFICATION WITH TAMARIN KERNEL POWDER)

Ground Calcium Carbonate (GCC) as the filler required in paper making that is intended to reduce production costs thus providing a profit opportunity for the paper industry. However the usage of GCC affected decreasing of paper strength and effectiveness of sizing process. In order to reduce the negative effect, this research has been conducted through the modification of filler using Tamarind Kernel Powder (TKP) which is a natural polymer obtained from local tamarind seeds. The results of high performance liquid chromatography (HPLC) analysis, showed that TKP contained 64-68% xylose, glucose, maltose and arabinose. Filler modification was conducted with mixing the TKP into CaCO3 and addition of cationic polyacrylamide and sodium polyphosphate dispersant at composition ratio of 100: 0.4 : 0.1: 1.0. Filler application with added the retention aid of cationic polyacrylamide 0.1%, resulted the filler retention value on sheet of 26.9 %. The modified filler shows an increase in filler stability and is easy to form emulsions when compared to commercial fillers. Modification of GCC filler with higher number of TKP usage gives increased filler retention value on sheets, improved sheet formation properties and optical properties.ABSTRAKGround Calcium Carbonat (GCC) sebagai bahan pengisi (filler) dalam pembuatan kertas untuk mengurangi biaya produksi sehingga memberikan peluang keuntungan bagi industri kertas, namun peningkatan jumlah GCC dapat berpengaruh pada menurunnya kekuatan kertas dan efektivitas proses pendarihan. Untuk mengurangi pengaruh negatif telah dilakukan penelitian modifikasi filler menggunakan Tamarind Kernel Powder (TKP) yang merupakan polimer alami dari bahan lokal biji asam jawa. Hasil analisis kromatografi cair kinerja tinggi (KCKT) menunjukkan bahwa TKP mengandung silosa 64-68 %, glukosa, maltosa, dan arabinosa. Modifikasi filler dilakukan dengan mencampurkan TKP ke dalam CaCO3 dengan penambahan poliakrilamida kationik dan dispersan natrium polifosfat pada komposisi 100 : 0,4 : 0,1 : 1,0. Aplikasi filler dengan penambahan zat peretensi 0,1 % poliakrilamida kationik diperoleh nilai retensi filler pada lembaran 26,9 %. Filler yang termodifikasi menunjukkan peningkatan stabilitas filler dan mudah membentuk emulsi jika dibandingkan dengan filler komersial. Modifikasi filler GCC dengan jumlah TKP yang lebih tinggi memberikan peningkatan nilai retensi filler pada lembaran, peningkatan formasi dan sifat optik lembaran.

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Co-cooking nonwoods with hardwoods

TAPPI Journal ◽

10.32964/tj13.6.19 ◽

2014 ◽

Vol 13 (6) ◽

pp. 19-24

Author(s):

TROY RUNGE ◽

CHUNHUI ZHANG

Keyword(s):

High Performance Liquid Chromatography ◽

High Performance ◽

Paper Industry ◽

Pulp And Paper Industry ◽

Strength Properties ◽

Agricultural Residues ◽

Kraft Pulping ◽

Pulp And Paper ◽

Strength Increase ◽

Xylan Content

Agricultural residues and energy crops are promising resources that can be utilized in the pulp and paper industry. This study examines the potential of co-cooking nonwood materials with hardwoods as means to incorporate nonwood material into a paper furnish. Specifically, miscanthus, switchgrass, and corn stover were substituted for poplar hardwood chips in the amounts of 10 wt %, 20 wt %, and 30 wt %, and the blends were subjected to kraft pulping experiments. The pulps were then bleached with an OD(EP)D sequence and then refined and formed into handsheets to characterize their physical properties. Surprisingly, all three co-cooked pulps showed improved strength properties (up to 35%). Sugar measurement of the pulps by high-performance liquid chromatography suggested that the strength increase correlated with enriched xylan content.

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Synthesis of High-Performance Hard Carbon from Waste Coffee Ground as Sodium Ion Battery Anode Material: A Review

Materials Science Forum ◽

10.4028/www.scientific.net/msf.1044.25 ◽

2021 ◽

Vol 1044 ◽

pp. 25-39

Author(s):

Hafid Khusyaeri ◽

Dewi Pratiwi ◽

Haris Ade Kurniawan ◽

Anisa Raditya Nurohmah ◽

Cornelius Satria Yudha ◽

...

Keyword(s):

Electrochemical Performance ◽

Electrode Material ◽

High Performance ◽

Production Costs ◽

Sodium Ion ◽

Carbon Anode ◽

Sodium Ion Battery ◽

Sodium Ion Batteries ◽

Hard Carbon ◽

Coffee Grounds

The battery is a storage medium for electrical energy for electronic devices developed effectively and efficiently. Sodium ion battery provide large-scale energy storage systems attributed to the natural existence of the sodium element on earth. The relatively inexpensive production costs and abundant sodium resources in nature make sodium ion batteries attractive to research. Currently, sodium ion batteries electrochemical performance is still less than lithium-ion batteries. The electrochemical performance of a sodium ion battery depends on the type of electrode material used in the manufacture of the batteries.. The main problem is to find a suitable electrode material with a high specific capacity and is stable. It is a struggle to increase the performance of sodium ion batteries. This literature study studied how to prepare high-performance sodium battery anodes through salt doping. The doping method is chosen to increase conductivity and electron transfer. Besides, this method still takes into account the factors of production costs and safety. The abundant coffee waste biomass in Indonesia was chosen as a precursor to preparing a sodium ion battery hard carbon anode to overcome environmental problems and increase the economic value of coffee grounds waste. Utilization of coffee grounds waste as hard carbon is an innovative solution to the accumulation of biomass waste and supports environmentally friendly renewable energy sources in Indonesia.

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Hybrid Precipitated Calcium Carbonate Containing Wood Flour for Paper Applications – A Comparative Handsheet Study

Chemical Science International Journal ◽

10.9734/csji/2019/v27i230110 ◽

2019 ◽

pp. 1-13

Author(s):

Klaus Dölle ◽

Kilian F. Baumgartner ◽

Neil F. Goodman ◽

Alexander Klitsiotisoris

Keyword(s):

Calcium Carbonate ◽

Filler Content ◽

Wood Flour ◽

Filler Material ◽

Carbonate Mineral ◽

Precipitated Calcium Carbonate ◽

Hybrid Filler ◽

Different Types ◽

Flour Blends ◽

Ground Calcium Carbonate

The main objective of this paper handsheet study is to investigate if a hybrid filler material containing wood flour and precipitated calcium carbonate can replace and/or supplement commercially available ground calcium carbonate and precipitated calcium carbonate mineral filler material for papermaking. The handsheet study contains 25 different furnish mixtures. Four different types of wood flour were used to manufacture the hybrid filler material, including two wood flour blends with a strengthening agent. All handsheet were manufactured with an 80% harwood and 20% softwood mix. The filler content varied between 10, 15 and 20%. The study showed that the hybrid filler material achieved a retention of up to 92.68% as well as a higher caliper of up to 208 μm compared to commercial ground and precipitated calcium carbonate of 120.4 μm and 145.6 μm respectively. Tensile and tear strength did not show an improvement. Elongation and tensile energy absorption did improve of up to 30% with the strength additive containing hybrid filler material. Opacity was improved of up to 10% with the hybrid filler material. Brightness and color values were lower due to the natural brow color of the wood flower material.

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Effects of Rotation Speeds and Media Density on Ground Calcium Carbonate during Ultrafine Grinding Process in Planetary Mill

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.997.542 ◽

2014 ◽

Vol 997 ◽

pp. 542-545

Author(s):

Yan Ru Chen ◽

Yi Chen Lu ◽

Xiao Min Lian ◽

Chao Yang Li ◽

Shui Lin Zheng

Keyword(s):

Particle Size ◽

Calcium Carbonate ◽

Rotational Speed ◽

Planetary Mill ◽

X Ray Diffraction ◽

X Ray ◽

Dry Grinding ◽

Ultrafine Grinding ◽

Effects Of Rotation ◽

Ground Calcium Carbonate

Superfine ground calcium carbonate (GCC) produced by carbonate minerals is a widely used inorganic powder material. In order to get a finer GCC powder with narrow distribution span, the effect of rotational speed and media density on ground GCC were studied by dry grinding GCC in a planetary ball mill under different rotational speed and various media density. The grinding limit-particle size and distribution of grinding calcium carbonate were measured by centrifugal sedimentation granulometer. The structure of GCC was measured by X-ray diffraction. The result shows that low rotational speed and high-density media is conducive to get a product with smaller particle size and narrow size distribution; crystal plane (012) and (122) are more stable than (018) and (116).

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Chemical Property of Ground Calcium Carbonate as Carbon Dioxide Absorbent

Materials Science Forum ◽

10.4028/www.scientific.net/msf.654-656.2923 ◽

2010 ◽

Vol 654-656 ◽

pp. 2923-2926 ◽

Cited By ~ 2

Author(s):

Seiji Yokoyama ◽

Nik Hisyamudin Muhd Nor ◽

Shunsuke Hirano

Keyword(s):

Carbon Dioxide ◽

High Temperature ◽

Calcium Carbonate ◽

Physicochemical Properties ◽

Specific Heat ◽

Chemical Property ◽

Emission Rate ◽

Dissociation Reaction ◽

Dissociation Pressure ◽

Ground Calcium Carbonate

Commercial sedimentation CaCO3 was ground by a vibration rod mill to investigate the physicochemical properties of mechanically activated CaCO3.When the CaCO3of the calcite structure was ground, the intensities of the crystal facesof calcite was decreased by distortions and so on, and the aragonite appeared as the grinding proceeded. The formed aragonite was transformed to the calcite when the sample was heated at 773K for3.6 ks. The dissociation pressure of CO2 of the ground CaCO3was larger than that of the non-ground CaCO3.The enthalpy; entropy and specific heat of change of the dissociation reaction were obtained. At high temperature, the emission rate of the ground CaCO3 was slightly larger than that of the non-ground CaCO3. At room temerature, the CaCO3 adsorbs CO2, and it desorbs the adsorbed CO2. The amount of adsorbed CO2 on the ground CaCO3 was larger than that of the non-ground CaCO3.

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Abrasion Characteristics of Ground Calcium Carbonate Products

Focus on Powder Coatings ◽

10.1016/j.fopow.2018.09.032 ◽

2018 ◽

Vol 2018 (10) ◽

pp. 5-6

Keyword(s):

Calcium Carbonate ◽

Ground Calcium Carbonate

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Paper-based products as promising substitutes for plastics in the context of bans on non-biodegradables

BioResources ◽

10.15376/biores.15.4.7309-7312 ◽

2020 ◽

Vol 15 (4) ◽

pp. 7309-7312

Author(s):

Wei Liu ◽

Huayu Liu ◽

Kun Liu ◽

Haishun Du ◽

Ying Liu ◽

...

Keyword(s):

Environmental Problem ◽

Human Life ◽

Paper Industry ◽

Pulp And Paper Industry ◽

Production Costs ◽

Plastic Pollution ◽

Paper Properties ◽

Global Environmental ◽

The World ◽

Plastic Products

As a global environmental problem, plastic pollution has attracted worldwide attention. Plastic wastes not only disrupt ecosystems and biodiversity, but they also threaten human life and health. Countries around the world have enacted regulations in recent years to limit the use of plastics. Paper products have been proposed as promising substitutes for plastics, which undoubtedly brings unprecedented opportunities to the pulp and paper industry. However, paper products have some deficiencies in replacing certain plastic products. Research and development to improve paper properties and reduce production costs is needed to meet such challenges.

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