Waste treatment can be done in variousways. One of the methods that can be used isthe coagulation and flocculation method. Thecoagulant used can be either a chemicalcoagulant or a natural coagulant. Naturalcoagulants can be used in wastewatertreatment for % removal of BOD and %removal of COD. By using moringa seedcoagulant, it showed % removal of BOD of90.12% and % removal of COD in thepharmaceutical industry waste a maximum of71.23%. Through the use of tapioca starchcoagulants, % removal of BOD and CODwas 95.25% and 94.63%. The use of smallcrab chitosan coagulant showed % removalof both BOD and COD’s results was 32%and 31%.
Donor darah merupakan sebuah kegiatan dimana seseorang secara sukarela memberikan darahnya yang nantinya akan disimpan di Bank Darah untuk keperluan transfusi bagi yang memerlukan. Umumnya kebutuhan darah tidak sebanding dengan jumlah pendonor. Informasi pentingnya donor danar masih banyak yang belum mengetahui. Kegiatan ini bertujuan untuk membantu Palang Merah Indonesia Kota Surabaya memenuhi dan meningkatkan stok darah yang dibutuhkan di Kota Surabaya dan mengsosialisasikan kepada seluruh mahasiswa Institut Teknologi Adhi Tama Surabaya bahwa pentingnya donor darah. Kegiatan donor darah ini bekerja sama antara Himpunan Mahasiswa Teknik Kimia dan Palang Merah Indonesia Donor Kota Surabaya. Teknis pelaksanaan kegiatan ini terbagi menjadi 4 tahap yaitu penyebaran formulir pendonor, Pendaftaran pendonor, Pengecekan kesehatan, donor darah. Kegiatan donor darah ini tidak hanya diikuti oleh civitas jurusan teknik kimia tetapi juga civitas fakultas yaitu mahasiswa Teknik dan dosen. Pelaksanaan kegiatan donor darah ini berlangsung 1 hari dengan peserta donor darah 60 orang dan berjalan dengan lancar. Partisipasi yang terlibat terdiri dari 52 mahasiswa dan 8 dosen. Berdasarkan pengecekan kesehatan didapatkan 40 peserta tidak memenuhi syarat untuk menjadi penderma darah dan 20 orang memenuhi, sehingga mendapatkan 20 kantong darah.
Blood donation is an activity where a person voluntarily gives blood which will later be stored in a blood bank for transfusion purposes for those in need. Generally, blood requirements are not proportional to the number of donors. Information on the importance of the danar donors is still unknown. This activity aims to help the Surabaya City Indonesian Red Cross meet and increase the blood stock needed in the city of Surabaya and to socialize all students of the Surabaya Adhi Tama Institute of Technology about the importance of blood donation. This blood donation activity is a collaboration between the Chemical Engineering Student Association and the Indonesian Red Cross Donor City of Surabaya. The technical implementation of this activity is divided into 4 stages, namely distribution of donor forms, donor registration, health checks, blood donors. This blood donation activity is supported not only by the chemical engineering community, but also by the faculty community, namely students and lecturers. The blood donation activity lasted for 1 day with 60 blood donor participants and it went well. The participants involved consisted of 52 students and 8 lecturers. Based on the health check, it was found that 40 participants did not meet the requirements to become blood donors and 20 people did, so they received 20 bags of blood.
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