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Copper is one of the toxic metals for health and the environment. In humans, high doses of copper metal can cause vomiting, dizziness, weakness, kidney and liver symptoms, anemia, to coma, and in severe cases, the patient can die. Judging from the dangers, proper waste management is needed to reduce the side effects of these pollutants. A practical and inexpensive technology is an adsorption adsorption technique using an efficient and easily available natural adsorbent, namely tofu dregs. The protein contained in tofu is one of the reasons for using tofu waste as an adsorbent. The absorption of amino acids that form two-charged ions (zwitter ions) is owned by proteins. Toxic metal can be bound to protein as metallotionein. The study consisted of four stages, namely (1) Analysis of initial copper content in silver craft waste; (2) Preparation of tofu waste adsorbent; (3) Characterization of tofu dregs adsorbent; and (4) variation of adsorption contact time. The study used a laboratory-scale experimental method. The adsorbent was contacted with the sample using a magnetic stirrer at various times. Instrument Atomic Absorption Spectrometer was used for the analysis of copper metal content and identification of its functional groups using an infrared spectrometer with the result that tofu waste has functional groups -OH, NH (stretching), CH (aliphatic), C=O, -OH (bending vibrations). , and CO. Copper metal content obtained is 19.5979 ppm. The optimum adsorption time was reached at 120 minutes with an optimum adsorption efficiency of 54.88%.

Bagasse is waste produced from the process of milking or extracting sugarcane stems. Baggase can be optimized in terms of use value and its function as an alternative technology, namely as an active carbon manufacturing material that can be used as a copper (Cu) adsorbent. This study discusses the functional baggase activated carbon group of phosphoric acid and nitric acid using Fourier Transform Infra Red (FTIR) and its application as a copper metal adsorbent in silver craft waste in Ungga Village, Praya, Central Lombok. The production of activated bagasse carbon consists of three stages, namely first dehydration by burning bagasse until it turns into carbon, the second carbonation is heating at 500ºC, carbon results are 100-200 mesh and third, activation by soaking 50 grams of carbon in 500 mL of 20% phosphoric acid and 20% nitric acid for 12 hours. After that the carbon is dried at 110ºC and finally heated at 500ºC for 1 hour. The bagasse carbon that has been made is put into 25 mL of waste water sample with a mass of 2 grams of adsorbent. Samples were then stirred at 30, 60, 90, 120 and 150 minutes contact time variations at a speed of 180 rpm using a batch system. The optimum contact time that is used to calculate the efficiency of copper metal content reduction is by calculating the difference in the metal content of copper metal before it is adsorbed and after it is adsorbed using activated carbon baggase. Concentrations of all copper metals were analyzed using Atomic Absorption Spectrophotometer (AAS). Identification using FTIR spectrophotometer shows that carbon baggase in this study contains functional groups C = O, C = C, C-C, N = O, C = N, C-OH, CH2 and C-H. From the research it was found that the copper metal content in the sample was 14.5710 ppm. The optimum contact time on copper metal adsorption is at 120 minutes contact time which results in optimum adsorption efficiency on copper metal that is 84.88%. Activated carbon baggase is an effective adsorbent to reduce levels of copper metal in silver craft waste.

Proses pembelajaran kimia yang inovatif, menyenangkan, aplikatif dan berkaitan langsung dengan real life, dan memfasilitasi kebutuhan life skill yang dapat bernilai wirausaha berupa pelatihan langsung manipulasi bahan-bahan kimia untuk kebutuhan sehari-hari seperti sabun cair di sekolah masih jarang dilakukan khususnya di sekolah swasta. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk melatih santri dalam pembuatan sabun dan pewangi pakaian sebagai upaya pengenalan kimia di sekolah dan pembekalan lifeskill bagi santri. Kegiatan ini diharapkan dapat bermanfaat bagi santri dan mendorong minat dalam mempelajari kimia dan mendorong terbentuknya usaha baru untuk wadah berwirausaha bagi santri. Metode pelaksanaan PKM transfer of knowledge dan technology degan langkah-langkah kegitan 1) persiapan, 2) pelaksanaan, dan 3) evaluasi. Hasil kegitan antara lain 1) mitra dapat memahmi dengan baik tentang prosedur pembuatan sabun cair, 2) terbentuknya keterampilan mitra dalam mebuat produk berupa sabun cair. Kegitan pendampingan perlu dilakukan secara berkelanjutan agar mitra dapat berinovasi dalam pembuatan produk-produk yang dilatih.Liquid Soap Making Training in Islamic Junior and Senior High School Abu Abdillah Gunungsari Islamic Boarding School to Improve the Competence and Life Skills of SantriAbstractThe learning process for chemistry that is innovative, fun, applicable and directly related to real life, and facilitates the needs of life skills that can be entrepreneurial in the form of direct training on the manipulation of chemicals for daily needs such as liquid soap in schools is still rarely done, especially in private schools. This community service activity aims to train students in making soap and clothing fragrances as an effort to introduce chemistry in schools and provide lifeskills for students. This activity is expected to be useful for students and encourage interest in studying chemistry and encourage the formation of new businesses as a forum for entrepreneurship for students. The method of implementing PKM is transfer of knowledge and technology with activity steps 1) preparation, 2) implementation, and 3) evaluation. The results of activities include 1) partners can understand well about the procedure for making liquid soap, 2) partners' skills are formed in making products in the form of liquid soap. Assistance activities need to be carried out on an ongoing basis so that partners can innovate in the manufacture of trained products.

This study aims to (1) describe the urgence of developing local wisdom based Chemistry learning and Lombok community tourism in the UNDIKMA Chemistry education study program and (2) describe the learning potential of growing student scientific literacy. This research was conducted in the form of a survey involving 65 students in the UNDIKMA Chemistry education study program. The data were collected using two Likert scale questionnaires. Data were analyzed using the category percentage technique. The results of the study showed that the application of local wisdom based Chemistry learning and tourism in the Lombok community in the UNDIKMA Chemistry education study program still lacked. Student responses to the idea of local wisdom based Chemistry learning and the tourism of the people of Lombok were categorized very well. Students had a high level of confidence that this learning method would increase motivation and attitudes towards learning and provided provisions that were in accordance with the needs of graduates as problem solvers and agents of change in a society that had the uniqueness of local wisdom and tourism potential.