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Indonesia's cigarette industry has experienced significant growth, contributing substantially to economic development and work opportunities. However, the production process generates wastewater containing pollutants like BOD, COD, TSS, NH3-N, phenol, and pH imbalances, which pose environmental risks. This study aims to evaluate the quality of wastewater from the cigarette industry and analyze the treatment technologies used to meet environmental standards. Using qualitative methods and secondary data from relevant industries, the research shows that cigarette industry wastewater is highly polluted and requires multiple treatment stages before being discharged into surface water. Key technologies include collecting tanks, equalization tanks, coagulation-flocculation, clarifiers, and trickling filters. The findings provide valuable insights into waste management challenges and propose solutions to support environmental sustainability in the cigarette industry.

Coumarin, a key bioactive compound in cinnamon, is known for its anticoagulant, antibiotic, and anti-carcinogenic properties. This study investigates the potential of cinnamon (Cinnamomum burmanni) extract as a natural anticoagulant using both the Lee-White method, for visual observation of clotting time, and blood smear analysis for microscopic evaluation. The research aims to assess the effectiveness of the extract in preventing blood coagulation compared to untreated blood samples. Results demonstrated that blood without any anticoagulant clotted within an average time of 5 minutes and 33 seconds. In contrast, blood treated with cinnamon extract did not exhibit coagulation, indicating a significant anticoagulant effect. Microscopic examination further supported these findings, as the blood cells in the treated samples appeared separated, with no visible aggregation or linkage between the cells. These findings suggest that cinnamon extract has strong potential as a natural anticoagulant, offering a safer and more accessible alternative to synthetic anticoagulants. Further research could explore its applications in medical treatments, particularly in conditions requiring blood thinning or clot prevention. This study highlights the potential of cinnamon as a valuable bioactive agent in the field of biomedical science, especially for anticoagulation therapies.

In drinking water treatment plants, there is a coagulation unit that requires coagulant substances. Coagulant dosage determination can be done using the jartest method. By carrying out a jar test, the correct dose will be known so that the coagulation process runs well, and the use of coagulants can be optimized. This research was carried out by analyzing jartest results from the company's internal laboratory for one week with two variations in jartest times in one day. The raw water used comes from shipping rivers with a company production capacity of 500 l/second. The dosage of Aluminum Sulphate coagulant used in the field is 165 mg/l, while the jastest results show that the optimum dosage is 140 mg/l. This research is expected to provide scientific information regarding determining coagulant dosage at IPAM PT Hanarida Tirta Birawa which makes it easier for installation operators.      

Coagulation is one of the processes of water treatment by the addition of chemicals, the purpose of which is to bind particles like particles or dissolve so that they clump. Coagulation concentration definitely affects the coagulation process carried out. In addition, the addition of coagulation also affects the water produced for distribution. Testing of the impact of coagulant concentrations on raw water treatment processes has been carried out on the PDAM Surya Sembada Surabaya. The use of laboratory testing methods is done to see the water quality when using different coagulants. The results of the analysis obtained that the difference in the concentration of coagulants has an influence on the process of water treatment, this is due to several factors that support the existence of variation in the use of the coagulation concentration.