ABSTRACT Metal Cr (VI) is a heavy metal contained in electroplating wastewater which is very stable and dangerous for the environment and human health. This study aims to determine the ability of SMS C. comatus in removing metal Cr (VI) in electroplating wasteswater with mass variations of 3, 4, 5, 6 grams, contact time 30 minutes with activation treatment using NaOH (0,3N) and activation …
ABSTRACT Chitosan is a Biocoagulant which is not poisonous, easy to degradable and polielectrolite. This research aims to know the the dose of coagulant and stirring speed in fosfat parameter removal, COD and TSS toward Laundry Liquid Waste and the result of the analyzed compared to PERMENLH/5/2014. This research was using Floculation and Sedimentation - Coagulation by using Chitosan from …
ABSTRACT Heavy metals such as Cr (VI) and Ni contained in wastewater from electroplating processes are included in toxic and hazardous wastes. An alternative technology for removing Cr (VI) and Ni metals in electroplating wastewater is biosorption using microalgae Chlorella sp. Chlorella sp. has the ability to respond to the toxic effects of heavy metals by forming phytochelatin. Phytochel…
ABSTRACT Electroplating liquid wastewater is liquid wastewater that comes from the process of coating a metal with other metals with the help of an electric current. This research conducts processing of electroplating liquid wastewater using a combination of treatment processes by biosorption using microalgae Chlorella sp. immobilization in an airlift bioreactor and further processing by c…
ABSTRACT Phenol is a dangerous type of industrial waste. The photocatalysis process has become the choice in degrading waste compounds such as phenol for the past few years. Titanium dioxide (TiO2) is a photocatalyst material that can be used to degrade phenol. Carbon nanotubes (CNT) were composited with TiO2 to enhance the photocatalyst performance of TiO2. The CNT used was modified with …
ABSTRACT Some industrial chemical processes produce wastewater containing phenols which are high in toxic and carcinogenic. One of the processes used to degrade phenols is the photocatalysis process. Carbon nanotubes (CNT) are used as doping on TiO2 to improve the performance of TiO2 photocatalysts. The surface of CNT was modified with cocoPAS surfactant. The purposes of this study are to …
ABSTRACT TiO2 is the most widely used material in the photocatalysis process, one of which is to degrade phenol waste. To increase the adsorption ability and photocatalyst compatibility, TiO2 was added with carbon-based materials namely graphene and cocoPAS surfactant which help to disperse graphene. The addition of Fe3O4 magnetic material is also expected to facilitate the separation of t…
ABSTRACT As one of the hazardous industrial wastes, an excessive amount of phenol in the environment can cause damage to the biological ecosystem and nutrient cycle. Phenol removal can be done by photocatalysis process using photocatalyst materials such as titanium dioxide (TiO2). The photocatalysis activity of TiO2 can be improved by making TiO2-Graphene (cocoPAS) composite. The purposes …
ABSTRACT Bio-oil is a dark brown liquid consisting of aliphatic, aromatic, alicyclic, and heterocyclic compounds which have the potential to be liquid fuels. Bio-oil can be produced from a mixture of biomass and synthetic polymers through the copyrolysis process. Co-pyrolysis is a pyrolysis process that involves two or more different materials as a feedstocks. Potential feedstocks for the …
ABSTRACT Palm oil mill effluent continues to grow along with palm oil production in Indonesia. Palm oil mill effluent treatment has been using anaerobic ponds which are not efficient due to the require large areas of land and due to greenhouse gases because they produce CO2. Electrocoagulation is an alternative technology and advanced technology in treating palm oil mill effluent. Electroc…
ABSTRACT Acetic acid is an organic chemical compound that is colorless and has a sharp odor. Pineapple skin can be used as a raw material for making acetic acid by utilizing microorganisms. Microorganisms used to process pineapple skin extract into bioethanol are Saccharomyces cerevisiae and the microorganism used to process bioethanol into acetic acid is Acetobacter aceti. The purpose of …
ABSTRACT The need for biomaterials in the form of Guided Tissue Regeneration (GTR) membranes to prevent the epithelialization process of cells that migrate to the bone region after the tooth extraction process, to fill cavities, and gum inflammation has increased rapidly. The purpose of this study is the synthesis of GTR membranes from chitosan, hydroxyapatite, and PEG and study the effect…
ABSTRACT Bio-oil can be produced by the catalytic co-pyrolysis process, in which catalytic co-pyrolysis is a thermal degradation process that involves two or more raw materials that have a high hydrogen index (H/C)eff and the presence of catalysts to increase the quality of bio-oil products. The raw materials used in this study are empty fruit bunches (EFB) and low-density polyethylene (LD…
ABSTRACT The increase in fuel consumption is currently still dominated by non-renewable fossil fuels that will sooner or later be sure to run out of availability such as petroleum, natural gas, and coal. So that efforts are needed to find alternative energy based on renewable to substitute the energy needs of the community. One of the right ways to overcome the energy crisis is to make alt…
ABSTRACT Empty fruit bunches are palm oil mill waste which are usually used as boiler fuel, compost and also as a road hardener in palm oil plantations. Production of levulinic acid from empty fruit bunches can be applied for textile coloring agent, anti-freezing, inks, resins, synthetic rubber and cosmetics. Levulinic acid can be produced by hydrolyzing cellulose compounds in hydrothermal…
Biochar is a carbon-rich residue derived from thermal decomposition (pyrolysis) of biomass with little or without the presence of oxygen. One of the raw materials that can be processed into activated biochar is oil palm fronds. The aims of this study to know the characterization of activated biochar from oil palm fronds as bioadsorbent and study the effect of bioadsorben dosages and contact…
Microalgae is a promising source of raw materials for renewable energy that can produce biodiesel. Microalgae lipid content is an important parameter that influences the feasibility of using microalgae for biodiesel production. Media and nutrition are important factors that influence the growth and lipid content of microalgae. This study aims to determine the effect of increasing the volume…
The growth of population will increase clean water demand. One of several way that can be done is by treating wastewater and reuse it as an alternative source. Greywater is wastewater that has not been utilized and discharged into the environment without prior treatment which can decrease in surface water quality. The current problem is that greywater discharged into the environment does no…
Bioethanol is an alcohol produced from the fermentation process. Bioethanol is also called ethyl alcohol, which is produced through a microbial process, which is the opposite of ethanol synthesized from petrochemical sources. Microalgae Chlorella sp. can be used as raw material for bioethanol by utilizing microorganisms. Microorganisms used to process microalgae Chlorella sp. to become bio…
Consumption of fuel both gasoline and diesel oil is increasing. Declining in production of national petroleum production make the need of alternative fuels as a substitute for petroleum-based energy supply. Bio-oil is an environmentally fuel that can be use as alternative fuel. In this study palm oil empty fruit bunches and polypropylene plastic waste were used to produced bio-oil. The purp…