Abstract
The current research aimed to increase the calorific value of woody cutting waste briquette with paper waste pulp as binder. There were three different binder variation used in this study, they are 5 %, 10 %, and 15 %. To create a briquette, a cylindrical iron mold with diameter of 3.5 cm and height of 3 cm and a hydraulic press with 2 t power were applied. The physical characteristics of the combination woody waste briquette and paper waste pulp, such as moisture content, ash content, volatile matter and carbon fix were examined using proximate analysis. The calorific value of briquetted fuel was tested by bomb calorimeter. The combustion test was performed to determine the combustion characteristic of briquettes, for example initial ignition time, temperature distribution, and combustion process duration. The general result shows that the calorific value of briquette stood in the range of 4 876 kCal kg–1 to 4 993 kCal kg–1. The maximum moisture content of briquette was 5.32 %. The longest burning time was 105 min.
Highlights
Universitas Internasional Semen Indonesia (UISI) disposes abundant amount of woody waste every day
Moisture content was analysed by heating the briquette in a furnace at 104 °C to 110 °C
The briquette could meet the requirement of Indonesian National Standard (SNI 01-6235-2000) which it did not exceed the maximum limit (8 %)
Summary
Universitas Internasional Semen Indonesia (UISI) disposes abundant amount of woody waste every day. The previous research related to the present study utilized the woody waste in UISI as briquette with three different ratio between the waste and tapioca flour binder. The ratio 90 % : 10 % (woody waste : tapioca flour binder) had the highest calorific value which showed only 3 630 kCal kg–1. This value was still far below the Standar Nasional Indonesia (SNI) requirement which the minimum calorific value of a briquette as a fuel should be 5 000 kCal kg–1 [8]. The result showed that the energy content of briquette using paper binder was 5 418 kCal kg–1. Several test were performed to understand the characteristic of briquettes, for example proximate analysis comprising the detection of moisture content, volatile content, ash content and fixed carbon, calorimetry test and combustion test
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