Proceedings of the International Conference on Sustainable Biomass (ICSB 2019)

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55 articles
Proceedings Article

Biodiversity Support and Ecotourism for Local Economic Development of Margasari Village – East Lampung District - Indonesia

Endang L. Widiastuti, Henni W. Maharani, Harnes Abrini
Mangrove is known to be a greenbelt of the coast with its function not only for the physical and chemical processes along the coast line affected by sea-and fresh-water current but also functioning as habitat for many animals, including migratory birds. Mangrove in Margasari village or Lampung Mangrove...
Proceedings Article

Carbon Stock Estimation Due to Changes in Mangrove Labuhan Maringgai District, East Lampung Regency

Rh Carina Pertiwi Syafira Salsabilli, Endang L. Widiastuti, Sri Wahyuningsih
The damage to the mangrove ecosystem in Margasari Village District of Labuhan Maringgai, East Lampung Regency was predicted to reduce the estimated carbon stocks in the ecosystem. This research aims to determine the influence of the functioning of the mangrove ecosystem on the total biomass, estimated...
Proceedings Article

Policy Cluster: Affirmative Empowerment and Strengthening of Coastal Community Women Home Industries

Novita Tresiana, Noverman Duadji
Purpose, The failure of policies and development programs for Home Industry (HI) that have been carried out by the local government is due to the implementation of the previous policies which were carried out sporadically, incidentally, not based on the community learning model. Clusterization is an...
Proceedings Article

Isolation and Characterization Bacillus sp. Producing Cellulase Enzymes from Hanura Mangrove

Sumardi, Salman Farisi, Christina N. Ekowati, Cahya I. Listiyorini
In the mangrove ecosystem, there are cellulolytic bacteria that act to decompose cellulose in nature. This study aims to obtain cellulolytic bacteria from mangrove forests in Hanura village. Bacterial isolation was carried out using Sea Water Complete Agar (SWCA) media which added Carboxymethyl Cellulose...
Proceedings Article

Potential Taurine Content from Three Different Macroalgaes: Halimeda opuntia L., Sargassum sp. and Eucheuma cottonii L.

Ulfa Azzizah, Endang L. Widiastuti, Henni W. Maharani
As one of the marine resources, macroalgae presumably contains of free amino acid such as taurine. Taurine is known to be one of the most important amino acid related to hyperosmotic stress for most of living organisms. The study was conducted to explore the taurine contain from the most abundance macroalgae...
Proceedings Article

The Effect of Bacillus Coagulans as Feed Probiotics on Non-specific Immunity of Whiteleg Shrimp Litopenaeus Vannamei

S Supono, M Rahayu, M W Yusuf
The study aimed to evaluate the effect of giving a different dosage of Bacillus coagulans to feed (feed probiotics) on nonspecific immunity of Litopenaeus vannamei (white shrimp). The parameters tested included water quality and shrimp immunity parameters, namely total hemocyte count (THC), differential...
Proceedings Article

Anticancer Potency of Seagrass (Enhalus acoroides) Methanol Extract in the HeLa Cervical Cancer Cell Culture

Endang Linirin Widiastuti, Komang Rima, Hendri Busman
Anticancer potential of methanol extracts of seagrass and taurine was proven through cytotoxic and antiproliferation tests by MTT method (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) on HeLa cervical cancer cell culture. The results showed that the methanol extract of seagrass had a...
Proceedings Article

Strategies of Development of Marine Ecotourism in Pagarjaya Village – District of Pesawaran - Lampung - Indonesia

Supra Jaya Perdana, Abdullah Aman Damai, Endang Linirin Widiastuti
This study aims to determine the perceptions of visitors and the village community of Pagarjaya towards its marine ecotourism and to find out the suitable strategy for the sustainable management of marine ecotourism. The research was conducted in the village of Pagarjaya, Punduh Pedada, Pesawaran District,...
Proceedings Article

Analysis of Heavy Metal Content in the Coral Reef and Foraminifera Benthic in Coastal Regions of Lampung Bay

Endang L. Widiastuti, Benny, R. Supriyanto, Eva Octarianita
Coral reefs and benthic foraminifera are efficient pollution bioindicators for predicting heavy metal pollution due to their great tolerance to high ecological pressures, so that these biota are used as test animals in monitoring the accumulation rate of heavy metals of marine waters. The purpose of...
Proceedings Article

Perception of Fisherman and Government Officer on Policy Implementation of Cantrang Prohibition in Lampung Bay

Indra Gumay Febryano, Debi Hardian, Supono Supono, Abdullah Aman Damai, Endang L. Widiastuti, Novriyanti Novriyanti
The policy to prohibit cantrang fishing gear is intended to prevent excessive exploitation of fish resources, environmental degradation and conflicts between fisherman, but fisherman and government officers’ perceptions of the policy are not the same. The purpose of this study was to analyze the perceptions...
Proceedings Article

Disaster Preparedness Analysis on Small Island as a Tourist Destination

Case Study: Pahawang Island, Lampung Indonesia

Citra Persada, Fadhilah Rusmiati
The Lampung Bay is a coastal area which has become the main destination for marine tourism in Lampung Province in recent years. After the tsunami due to the eruption of Mount Anak Krakatau in December 2018, the number of tourists to the region has decreased. The main reason for this is that there is...
Proceedings Article

Analysis of Suitability of the Mangrove Ecotourism Area Pandan Alas Sriminosari Village Labuhan Maringgai East Lampung

A Herison, A Darmawan, Y Romdania, C Puspaningrum
The Sriminosari village is a coastal village in East Lampung district that had mangrove forests. Now, mangrove forests of Sriminosari used as a mangrove ecotourism area and will be developed as a form of proper management to ensure the conservation and sustainability of rehabilitation while simultaneously...
Proceedings Article

Community-Based Consumable Fresh Water in Coastal Area of Dente Teladas Village, Tulang Bawang District, Lampung Province

Endang L. Widiastuti, Vina O. Indraswati, Indra G. Febryano, Hartoyo, Supono
Community access to consumed water in most coastal areas is still limited, which is one of the causes of the low level of welfare. The aim of the study was to explain the perceptions of coastal communities in Dente Teladas Village of Tulang Bawang District-Lampung Province towards the provision of water...
Proceedings Article

Identification of Child Problems & Tracking Policies for the Protection and Fulfillment of Children’s Basic Rights in South Regency as a Coastal Zone of Lampung Province

Noverman Duadji, Novita Tresiana
The issue of children is a global public problem and is directly related to government programs and activities. To solve children’s problems requires commitment and accuracy of action with the intended targets. This research is oriented towards achieving goals, namely identifying children’s problems...
Proceedings Article

Groundwater Management for Small Islands and Spatial Patterns (Case Study of Banggai Kepulauan Regency)

Jaka Suryanta, Turmudi, Irmandi Nahib
Banggai Kepulauan (Bangkep) Regency with an area of 21,988.56 km2, 30% of its territory is land, namely Peleng Island and several small islands, while the other 70% is in the form of sea. A small portion of the region experiences drought during the dry season and its geological factors, but in the next...
Proceedings Article

Tidal Current Pattern in the Surrounding Bintan Island Waters Based on Model Simulation

Ahmad Bayhaqi, Annisa K. Fajari, Dewi Surinati, Nurin Hidayati
Observation was conducted in the surrounding Bintan Island Waters to collect the ocean surface current data including moored and stationary recording during first transitional monsoon (March-April). Tidal current pattern in all regions of Bintan Island (north, east and southwest) is simulated using 2D...
Proceedings Article

Analysis of Urban Fabric: An Integrated Coastal Zone Management (ICZM) Approach for Sustainable Tourism Development in The Coastal Area of Bandar Lampung

Citra Persada, Yunita Kesuma, Fadhilah Rusmiati
The coastal zone of Bandarlampung which grew as one of the economic development area in southern, is currently experiencing environmental degradation caused by trading activities, warehousing on a large scale. The natural resources in coastal area is holds high economic activity to create the tourism...
Proceedings Article

Lipid Contain of Three Microalgaes on Culture with Different pH and Salinity

Inas Fadhilah, Tia Annisa, Endang L. Widiastuti, Henni W. Maharani
Three species of microalgae were used in this study, namely Nitzschia sp., Porphyridium sp., and Tetraselmis sp., which collected from the Lampung Agency of Maricultures – Ministry of Coastal and Marine Affairs. They were cultured in room temperature with 12:12 day light and given different salinities...
Proceedings Article

Nutrients Distribution and Trophic Status Classification in Coastal Waters of Pulau Pasaran, Lampung

B Putri, M R Nur Huda, H Yulianto, I G Yudha, N M Noor, M Ali
Research on the characteristics of distribution of phosphate, nitrate and Chlorophyll-a have been carried out in Pulau Pasaran waters Lampung from May to July 2017. The aim of this research was to determine the nutrient distribution and tropic status of Pulau Pasaran waters by chlorophyll-a, nitrate,...
Proceedings Article

Fisherman Attitude on Fisherman Insurance in Bandar Lampung City

I G Febryano, M Rona, A A Damai, Hartoyo, E Rohana, Novriyanti
A fisherman insurance program is one of the government’s policies to protect fisherman in their work. This study aims to explain the attitude of fisherman to fisherman insurance programs. The sampling technique used is non-probability sampling using the method of judgment sampling approach, which is...
Proceedings Article

The Tourism Concept of Emergency Shelter: Strategies for Community Resilience in The Coastal Area of South Lampung

D Hardilla, K H Basuki, F Rusmiati, C Persada
Facing vulnerability of disaster in the coastal area, a disaster risk reduction planning is evolved in Kalianda as the capital of South Lampung regency. These district areas close to Mount Anak Krakatoa which one of the most active volcano in Indonesia and caused the underwater landslide then turn generated...
Proceedings Article

Estimating the Number of Trees in Margasari Mangrove Forests of Lampung Through Aerial Images Using Adaptive Thresholding and Contour Extraction Methods

Mona A Batubara, Syaiful Alam, Khoirin Nisa, Rizka WA Utami, Helmy Fitriawan, Ardian Ulvan
Estimating number of trees with field plots located in remote or inaccessible areas can be a costly and timely endeavor. Unmanned aerial vehicle (UAV) remote sensing allowing for the estimation of the forest vegetation offers an alternative to traditional ground-based forest measurements. It is an important...
Proceedings Article

The Technical Concept of Differential Optical Absorption Spectroscopy for SO2 Gas Spectrum Monitoring on Volcanic Ash of Gunung Anak Krakatau volcano

Ardian Ulvan, Muhamad Rifky Maulana, Mona Arif Muda Batubara, Nora Aditiyan, Melvi
Gunung Anak Krakatau is one of the active volcanoes in Indonesia. In October – December 2018, it erupted 156 times by releasing incandescent materials and toxic gases in the form of sulphur dioxide (SO2), carbon dioxide (CO2), and hydrogen sulphide (H2S) at 2 km radius. The release of SO2 gas indicates...
Proceedings Article

Characterization of Mixed Biodiesel and Petrodiesel as Transportation Fuel

A Sholihah, S D S Murti, A R Juwita, F M Yanti, H Saputra
The use of biodiesel from palm oil as a substitute for diesel oil is a policy of the Government of Indonesia. In addition to renewable energy, the use of biodiesel as a fuel for transportation and industry is also an effort to reduce imports of diesel oil. Apart from the advantages of renewable biodiesel...
Proceedings Article

Cellulose Microfibrils Filler Contributes to Thermal Stability and Morphology of Bioplastics from Sorghum-Based

Y Darni, N I Hanifah, H Utami, L Lismeri, M Hanif
This research aimed to examine the effect of cellulose microfibrils (CMF) as a filler to thermal characteristics and morphology of bioplastic. Sorghum starch and chitosan, of which 63 micron particle size, were varied by starch to chitosan ratio (g/g) of 10:0; 9.5:0.5; 8.5:1.5; 7.5:2.5; 6,5:3.5; and...
Proceedings Article

Biogas Purification by CO2 Reduction in Bubble Column Using Ca(OH)2 and NaOH

E Purba, C N Yogia, P D R Sari
This study is about biogas purification process by reducing the CO2 content in order to increase the heating value of biogas by using Ca(OH)2 and NaOH solution as the absorbent in a bubble column. The purpose of this study is to determine the effect of the sparger hole diameter and the height of Ca(OH)2...
Proceedings Article

Analysis of Tropical Fruit Waste Biomass Generation in Indonesia and Its Reuse Potential

A Brunerová, U Hasanudin, D A Iryani, D Herák
Several The following research focuses on analysing waste biomass generated thru the processing of specific tropical fruits, such as Dragon fruit, Duku, Mangosteen, and Snake fruit. The amount (in %) of produced fruit waste biomass (skin, peel) during fruit processing was monitored, and collected waste...
Proceedings Article

The Effect of Alkaline Pretreatment on Biogas Productivity and Kinetic from Cocoa Pod Husk Waste Using Batch Reactor

T Widjaja, S Nurkhamidah, A Altway, K Laksmi, B Gusdyarto, T Iswanto
Cocoa pod husk (CPH) as a potential plantation waste was used for the biogas production. Pretreatment using NaOH (N), NaOH with addition of H2O2 simultaneously (NHs) and consecutively (NHc) were carried out to remove lignin content in CPH and enhance methane yield. 2% NaOH was used for N pretreatment...
Proceedings Article

Synthesis and Characterization of NPK Slow Release Fertilizer for Red Onion by Using Empty Fruit Bunch (EFB) Char

E R Finalis, Arfiana, I Noor, S D S Murti, H Suratno, E Rosyadi, H Saputra, R Noda
Red onion (Allium cepa L.) is considered one of the most commonly used vegetables in the culinary arts in Indonesia. It has many benefits, one of them is contain antioxidants that promote good health. Conventional cultivation of red onion is depended on the implementation of inorganic fertilizers to...
Proceedings Article

Upgrading of Palm Oil Empty Fruit Bunches to Solid Fuel Using Torrefaction and Hydrothermal Treatment

D A Rahim, M Yan, R D A Pohan, D Hantoko, H Susanto
To enhance the physicochemical properties of the EFB in the form of biochar, torrefaction and hydrothermal treatment were used. The proximate and ultimate compositions, heating values, and mineral composition of the biochar were all determined. The results showed that after treatment, fixed carbon increased...
Proceedings Article

Effects of Meranti Biochar Addition on the Root Growth of Falcataria Moluccana Seedlings

Melya Riniarti, Hendra Prasetia, Ainin Niswati, Udin Hasanudin, Irwan Sukri Banuwa, Aulia Asmara Loka, Jiho Yoo, Sangdo Kim, Sihyun Lee, Wahyu Hidayat
The purpose of this study was to determine the effect of biochar application in growing media on the development of the roots of Falcataria moluccanna seedlings. Biochar from the waste of meranti wood (Shorea sp.) was produced by a slow pyrolysis process using a traditional kiln at a temperature of 600°C....
Proceedings Article

Product Characteristics from the Torrefaction of Bamboo Pellets in Oxidative Atmosphere

Jacky Michael Pah, Lisman Suryanegara, Agus Haryanto, Udin Hasanudin, Dewi Agustina Iryani, Christine Wulandari, Jiho Yoo, Sangdo Kim, Sihyun Lee, Wahyu Hidayat
Bamboo is a potential energy crop for the future and an attractive option to replace wood due to its fast growth, high productivity, and essential fuel characteristics such as low ash content, alkali index, and high heating value. This study aimed to evaluate the effects of torrefaction on the physical...
Proceedings Article

Effects of Eco-frendly Hot Oil Treatment on the Wood Properties of Gmelina Aborea and Cocos Nucifera

Shalehudin D. Ma’ruf, Samsul Bakri, Indra Gumay Febryano, Agus Setiawan, Agus Haryanto, Intan Fajar Suri, Nam Hun Kim, Wahyu Hidayat
Most of wood in Indonesia is dominated by fast-growing wood such as gmelina (Gmelina arborea) and materials such as coconut (Cocos nucifera). Using fast-growing woood natural forests, increase economic growth, and is more environment friendly. The objective of this study was to improve the wood properties...
Proceedings Article

Influence of Die Temperature on Unit Density and Calorific Value of Municipal Solid Waste Pellets

S R H Siregar, D Nursani, A Surjosatyo
The process of waste to energy can solve the problem of waste and produce energy as a by-product. The waste can be used as a raw material in pelletization process which then used as a fuel in the thermal processing technology. In the pelletization process there are operational variables that influence...
Proceedings Article

Improving Fuel Quality of Rice Straw Through Soaking Using Wastewater from Tofu Industry

S Suharyatun, A Haryanto, W Rahmawati, S Triyono, U Zubaidah
Straw is agricultural waste that has enormous potential as an alternative energy source because of its abundant availability. However, straw has poor intrinsic properties as a fuel. Alkali metal content (especially K) is very high, causing problems in the combustion process at high temperatures. One...
Proceedings Article

Emulating Excitation System of a Biomass-Based Micro Steam Turbine Generator

Khairudin, Amirudin, L Hakim, H Gusmedi, U Hasanudin, A Haryanto
An Arduino-driven power supply was applied to control the electromagnetic field of a synchronous machine experimented in this work. Typically, electromagnetic field was controlled by adjusting the field current. In this work, the field was directly controlled by regulating voltage source of the exciter...
Proceedings Article

Effects of Torrefaction Using COMB Dryer/Pyrolizer on the Properties of Rubberwood (Hevea brasiliensis) and Jabon (Anthocephalus cadamba) Pellets

W Hidayat, T Rubiyanti, Y Sulistio, D A Iryani, A Haryanto, Amrul, J Yoo, S Kim, S Lee, U Hasanudin
Rubberwood (Hevea brasiliensis) and Jabon (Anthocephalus cadamba) are two promising species that is widely planted in industrial plantation and community forests in Indonesia. The objective of this study was to improve the properties of rubberwood and jabon pellets through torrefacation. Torrefaction...
Proceedings Article

Decreasing of Environmental Loads in Tapioca Industry Through Utilization of Biogas Digester Effluent for Fertigation During Vegetables Production

J R Amelia, O Maulidia, A Haryanto, S Triyono, U Hasanudin
In order to lower environmental burden, a tapioca industry make use its wastewater to generate biogas through anaerobic digestion process using a covered lagoon system. However, the effluent from the digester still has not met the quality standards so that it cannot be disposed into the water body. Organic...
Proceedings Article

Cold Model Performance Test of 50 KWe Dual Fluidized Bed Gasification Technology

E Rosyadi, S D S Murti, I Masfuri, J Prasetyo, H Saputra, Y Sudo, R Noda
Research on the development of sustainable alternative fuels to replace fossil fuels has received serious attention because of the increasing world oil prices and environmental concerns. This study focused on the development of Dual Fluidized Bed Gasification technology, especially the cold model performance...
Proceedings Article

Chemical Modifications of Torrefied Palm Kernel Shell Using COMB Method

N Rumbang, Karelius, M Dirgantara, K G Suastika
Torrefaction is a thermochemical process to improve the properties of biomass as a solid fuel. In addition to solid fuel, the torrefaction process also produces a by-product in the form of liquid smoke from condensation results. In this study, an analysis of lignocellulose and Fourier Transform Infrared...
Proceedings Article

Characterization of Modified Lampung Natural Zeolite with Cetyl Trimethyl Ammonium Bromide (CTAB) for Adsorption Industrial Tapioca Wastewater

Darmansyah, S B Ginting, D A Iryani, R P Sari, D Supriyadi
This research was observed on the CTAB modified Lampung Natural Zeolite (ZMS). The aim is to improve the adsorption capacity of tapioca wastewater. This zeolite modification process has several steps, starts with Lampung Natural Zeolite (ZAL or LNZ) pretreatment, LNZ activation by NH4Cl, and ends up...
Proceedings Article

Real-time Monitoring of Biomass Temperature and Humidity Based on the Internet of Things

Aryanto, Melvi, Ardian Ulvan
The conversion of biomass to energy is known as biomass regeneration. This energy is used to generate electricity and heat. Combustion systems and classification systems are a major category of biomass conversion technology for power and heat production. The temperature in the biomass gasifier plays...
Proceedings Article

Hybrid Catalyst Cu-Zno/Al2O3-HZSM-5 for Direct Synthesis Dimethyl Ether from CO and H2 (Syngas)

P R Tyas, S D S Murti, S D Nanda
Dimethyl Ether (DME) is an alternatives energy that can be synthesized through a direct process from syngas (CO and H2) with utilizing Cu-ZnO/Al2O3-HZSM-5 as a hybrid catalyst. Direct synthesis DME technology is relatively new technology by utilizing syngas that can be derived from gasification of biomass...
Proceedings Article

Zero Waste Concept in Fruit Waste Anaerobic Digester: Case Study of Biogas Plant Gamping, Yogyakarta

A Rahmada, F Marendra, H Rimbawan, C Wulandari, A E Putri, A Mustofa, D A Pramudito, R Millati, R B Cahyono, T Ariyanto
Gamping biogas plant was built in 2011 to solve waste problem from GemahRipah fruit market which generate 4-10 tons waste/day. The digester was design for 4 ton/day and produce biogas and electricity. The electricity is used for lighting the shops and the road. For eightyears along the installation,...
Proceedings Article

Performance of Biogas Production from Coffee Pulp Waste with Cow Dung and Cattle Rumen Fluid as Inoculum in a Batch Reactor

T Widjaja, Nurkhamidah, A Altway, T Iswanto, E. Grady
Production of biogas from coffee pulp waste is one of the potential attempts to provide alternative energy in Indonesia. As a leading commodity in Indonesia, the coffee produced the residual waste from its processing such as the pulp waste (include the exocarp, mesocarp, and endocarp). The waste contains...
Proceedings Article

Pairing Coconut and Candlenut Oil as Feed Supplement in Low Protein Diet with Addition Se on Feed Efficiency of Red Nile Fish (Oreochromis Niloticus)

K Haetami, Junianto, Abun
Nutritional Balance in feed is critical to improve the efficiency of feed. The use of oil in omnivore fish can serve as a spare protein-energy provider in addition to carbohydrates. Not only is the adequacy of the quantity and quality of protein that must be guaranteed, often the energy value is not...
Proceedings Article

Numerical Analysis with Simulations for Biomass Gasification

Mahidin, Husni Husin, Khairil, Hamdani, Erdiwansyah, Yanna Syamsuddin, Hisbullah, M Reza Hani, Asri Gani
The biomass gasification is one of the largest chemical transformation procedures of heat effectiveness. Numerical simulation is a significant instrument for studying biomass gasification. The numerical simulation of biomass gasification technologies at work and overseas is evaluated in this article....
Proceedings Article

Mass Yield Improvement of Liquid Fuel from RMSW Using Long Catalyser Downstream in Stage Pyrolysis

I M Gandidi, A Wiyono, Purnawan, Amrul
Thermal degradation at 500 oC to a Real Municipal Solid Waste (RMSW) has leave a footprint of problem with very low mass yields of liquid fuel. Therefore, in the presence research, it has been attempted to increase the mass yield of liquid fuel by using Long Catalyzer Downstream (LCD) equipped with top...
Proceedings Article

Lignocellulosic Analysis of Corncob Biomass by Using Non-Thermal Pulsed Electric Field-NaOH Pretreatment

A W Putranto, S H Abida, K Adrebi
In recent years, the second-generation bioethanol and advanced bio-based material production from biomass are focused on the pretreatment process by separating cellulose components from other components such as lignin and hemicellulose. Therefore, a physicochemical pretreatment method is needed by applying...
Proceedings Article

Leaching of Potassium from Oil Palm Empty Fruit Bunch (OPEFB) Using Tapioca Wastewater

L M Ningsih, A Haryanto, U Hasanudin, S Triyono
Empty fruit bunch (EFB) of palm oil is an abundant by-product that is resulted from the crude palm oil (CPO) extraction process and has great potential for bioenergy application. However, EFB has a high content of mineral such potassium (K) and silica (Si) that result in a negative impact on boiler like...
Proceedings Article

Biogas Purification Using Chitosan-Impregnated Porous Carbon

D P Rahmadani, A Rahmada, F Marendra, H J Rimbawan, R B Cahyono, Suherman, T Ariyanto
Biogas is produced from the anaerobic digestion of biodegradable organic matter. However, its application is limited because it contains impurities such as carbon dioxide (CO2) in high concentrations. Therefore, it is necessary to remove CO2 to improve the energy content of biogas. Porous adsorbents...
Proceedings Article

Characterization of Cassava Stems as Potential Biomass for Bio-Oil Production via Electromagnetic-Assisted Catalytic Liquefaction

L Lismeri, M Anggraini, A Sudarni, Y Darni
The production of bio-oil from biomass as renewable sources has been trusted as a suitable alternative in supplying future energy needs. Present in abundance amounts as crop residues cassava stems is potential biomass tobe utilized. As raw material, it has advantages such as fast and easy growth, minimal...
Proceedings Article

Fabrication, Characterization and Mechanical Stability Performance Test of Cellulose Acetate Membrane Filled with Lampung Natural Zeolite (Ca/LNZ)

D A Iryani, A W Cindradewi, S B Ginting, E Ernawati, U Hasanudin
The hybrid membranes for pervaporation of ethanol-water mixture were prepared by filled Lampung natural zeolite (LNZ) into cellulose acetate (CA) casting solution in the varied ratio of CA:LNZ (30:0, 30:5, 30:10, 30: 20, 20:20 and 40:10) wt%. The effect of zeolite addition on the resulting membranes...
Proceedings Article

Methane Production from Patchouli Oil Distillery Waste Using Wet Semi-Continuous and Dry Batch Anaerobic Digestion

D A Prameswari, A N Rahmah, R Millati, R Wikandari, M N Cahyanto, Lukitawesa, C Niklasson, M Taherzadeh
Patchouli oil distillery waste (PODW) was used as a substrate for methane production in wet semi-continuous and dry batch anaerobic digestion (AD). In wet semi-continuous AD, the system was operated with recirculation of effluent. Two reactors with 300 mL of working volume were operated for 45 days in...
Proceedings Article

Purification of Biogas by CO2 Reduction in Biogas Using Potassium Hydroxide Solution (KOH) in a Packed Tower

U N Pamiliani, E Purba
This research is about the absorption of carbon dioxide gas (CO2) in biogas processed from tapioca waste using a solution of potassium hydroxide (KOH) as absorbent. The purpose of this research was to determine the effect of gas flow rate and the flow rate of KOH solution to the absorption of CO2. The...